Rename to lowercase commandtools.

Add docs for ContentFilter class.
Add documentation to displaytools classes.
2021-03-07 17:40:18 +08:00 · 2021-03-07 16:26:50 +08:00 · 2021-03-07 16:26:26 +08:00 · 2021-03-07 15:38:44 +08:00 · 2021-03-07 15:27:31 +08:00 · 2021-03-07 14:55:41 +08:00
224 changed files with 15854 additions and 7959 deletions
@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: 💬 Multiverse Discord Server
+    url: https://discord.gg/NZtfKky
+    about: Need help with using Multiverse-Core or just want to chat with the devs? Join the Multiverse Discord Server for help!
@@ -0,0 +1,56 @@
+---
+name: ❓ Help!
+about: Encountered a problem with Multiverse-Core? Not sure how to fix it?
+title: ''
+labels: 'Type: Assistance'
+assignees: ''
+
+---
+
+<!-- Multiverse-Core help guide
+
+Don't write inside the arrows as they will be hidden when you post your issue.
+
+Get latest build from: http://ci.onarandombox.com/view/Multiverse/
+
+If you need help other submodules of Multiverse, go to their respective git repo:
+    Multiverse-Portals: https://github.com/Multiverse/Multiverse-Portals/issues
+    Multiverse-NetherPortals: https://github.com/Multiverse/Multiverse-NetherPortals/issues
+    Multiverse-Inventories: https://github.com/Multiverse/Multiverse-Inventories/issues
+    Multiverse-SignPortals: https://github.com/Multiverse/Multiverse-SignPortals/issues
+
+Or come join our Discord server to get help sooner: https://discord.gg/NZtfKky
+
+If you're happy to wait (or you were sent here from Discord), read on:
+
+1.  Check the Usage and FAQ pages to see if it answers your queries:
+      https://github.com/Multiverse/Multiverse-Core/wiki/Basics
+      https://github.com/Multiverse/Multiverse-Core/wiki/FAQ
+
+2.  Fill out the template.
+      This will help us understand what problem you've encountered and help us
+      find a solution.
+
+3.  When linking files, do not attach them to the post!
+      Copy and paste any logs into https://gist.github.com/ or other similar service.
+
+4.  Delete this line and all above lines before posting your issue!       -->
+
+### Information
+
+* **Server version:** <!-- Insert output of `/version` command -->
+
+* **Full output of `/mv version -p`:** <!-- Replace this with the command output's https://paste.gg/ link -->
+
+* **Server log:** <!-- Upload `logs/latest.log` to https://gist.github.com/ -->
+
+### Help request
+
+**Problem**
+<!-- What problem did you encounter? -->
+
+**What I have tried**
+<!-- What have you tried so far? -->
+
+**Screenshots**
+<!-- If relevant, include any screenshots here. -->
@@ -0,0 +1,59 @@
+---
+name: 🐛 Report a Bug
+about: Report a Multiverse-Core bug. Only use this if you're 100% sure it's something wrong with Multiverse-Core - otherwise, try "Help!".
+title: ''
+labels: 'Bug: Unconfirmed'
+assignees: ''
+
+---
+
+<!-- Multiverse-Core bug reporting guide
+
+Don't put anything inside this block, as it won't be included in the issue.
+
+Get latest build from: http://ci.onarandombox.com/view/Multiverse/
+
+If you are having issues with other submodules of Multiverse, go to their respective git repo:
+    Multiverse-Portals: https://github.com/Multiverse/Multiverse-Portals/issues
+    Multiverse-NetherPortals: https://github.com/Multiverse/Multiverse-NetherPortals/issues
+    Multiverse-Inventories: https://github.com/Multiverse/Multiverse-Inventories/issues
+    Multiverse-SignPortals: https://github.com/Multiverse/Multiverse-SignPortals/issues
+
+If you are reporting a bug, please follow the following steps:
+
+1.  Fill out the template in full.
+      Run the commands in the console. Don't just put "latest" as a version,
+      or we will ignore it.
+
+2.  When linking files, do not attach them to the post!
+      Copy and paste any logs into https://gist.github.com/, then paste a
+      link to them in the relevant parts of the template.
+      **DO NOT drag files into this box!**
+
+3.  Make sure not to write between the arrows, as anything there will be
+    hidden.
+
+4.  Delete this line and all above lines before posting your issue!       -->
+
+### Information
+
+* **Server version:** <!-- Insert output of `/version` command -->
+
+* **Full output of `/mv version -p`:** <!-- Replace this with the command output's https://paste.gg/ link -->
+
+* **Server log:** <!-- Upload `logs/latest.log` to https://gist.github.com/ -->
+
+### Details
+I was **`<able / not able>`** to reproduce my issue on a freshly setup and up-to-date server with the latest version of Multiverse plugins with no other plugins and with no kinds of other server or client mods.
+
+**Description**  
+<!-- Replace this with a brief summary of the bug. -->
+
+**Steps to reproduce**  
+<!-- Replace this with exactly what you did to cause the bug. -->
+
+**Expected behavior**  
+<!-- Replace this with what you expected to happen. -->
+
+**Screenshots**  
+<!-- Replace this with screenshots, if necessary. -->
@@ -0,0 +1,54 @@
+---
+name: 💡 Request a Feature
+about: Suggest a feature you want to see in Multiverse-Core!
+title: ''
+labels: 'Type: Idea'
+assignees: ''
+
+---
+
+<!-- Multiverse-Core feature request guide
+
+Fill out the template. Don't write inside the arrows as they will be hidden
+when you post your issue.
+
+Get latest build from: http://ci.onarandombox.com/view/Multiverse/
+
+If you are look for other submodules of Multiverse, go to their respective git repo:
+    Multiverse-Portals: https://github.com/Multiverse/Multiverse-Portals/issues
+    Multiverse-NetherPortals: https://github.com/Multiverse/Multiverse-NetherPortals/issues
+    Multiverse-Inventories: https://github.com/Multiverse/Multiverse-Inventories/issues
+    Multiverse-SignPortals: https://github.com/Multiverse/Multiverse-SignPortals/issues
+
+Not sure if your feature fits in Multiverse-Core? Feel free to ask on our Discord
+server: https://discord.gg/NZtfKky
+
+If you have a feature suggestion for Multiverse-Core, read the following tips:
+
+1.  Fill out the template.
+      This will help us understand what you're requesting and why you want us
+      to add it.
+
+2.  Keep it simple.
+      Make sure it's easy to understand what you're requesting. A good way is
+      to keep it to one request per GitHub issue, as we can then easily track
+      feature requests.
+
+3.  Check whether it has already been asked or added.
+      You can search the issue tracker to see if your feature has already been
+      requested at https://github.com/Multiverse/Multiverse-Core/issues.
+
+4.  Ask yourself: "Does this belong in Multiverse-Core?"
+      There are lots of features that we reject because most servers won't
+      need or use them. If your feature is very specific or already exists in
+      another plugin, it might not be a good fit for Multiverse-Core.
+
+5.  Delete this line and all above lines before posting your issue!       -->
+
+### Feature request
+
+**Feature description**
+<!-- What feature are you suggesting? -->
+
+**How the feature is useful**
+<!-- How is the feature useful to players, server owners and/or developers? -->
@@ -12,6 +12,7 @@

 # maven
 /target
+dependency-reduced-pom.xml

 # vim
 .*.sw[a-p]
@@ -1,7 +0,0 @@
-[submodule "lib/allpay"]
-	path = lib/allpay
-	url = git://github.com/FernFerret/AllPay.git
-[submodule "lib/commandhandler"]
-	path = lib/commandhandler
-	url = git://github.com/PneumatiCraft/CommandHandler.git
-        branch = notrie
@@ -0,0 +1,6 @@
+language: java
+jdk:
+  - oraclejdk8
+notifications:
+  email: false
+dist: trusty
@@ -1,11 +1,8 @@
 Building
 ========
-Update the submodules after you clone and before you build with maven.
+Simply build the source with maven:

-```
-$ git submodule update --init --recursive
-$ mvn install
-```
+    $ mvn install

 More details are available on the [build instructions wiki page](https://github.com/Multiverse/Multiverse-Core/wiki/Building).

@@ -16,3 +13,4 @@ Copyright (c) 2011, The Multiverse Team All rights reserved.
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of the The Multiverse Team nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
@@ -13,9 +13,7 @@
    <module name="JavadocPackage">
        <property name="allowLegacy" value="true"/>
    </module>
-    <module name="NewlineAtEndOfFile">
-        <property name="severity" value="info"/>
-    </module>
+    <module name="NewlineAtEndOfFile" />
    <module name="Translation"/>
    <module name="FileLength"/>
    <module name="FileTabCharacter">
@@ -78,7 +76,10 @@
        <module name="UnusedImports">
            <property name="processJavadoc" value="true"/>
        </module>
-        <module name="MethodLength"/>
+        <module name="MethodLength">
+            <property name="severity" value="warning"/>
+            <property name="countEmpty" value="false"/>
+        </module>
        <module name="ParameterNumber"/>
        <module name="EmptyForIteratorPad"/>
        <module name="MethodParamPad"/>
@@ -103,7 +104,6 @@
        </module>
        <module name="LeftCurly"/>
        <module name="RightCurly"/>
-        <module name="DoubleCheckedLocking"/>
        <module name="EmptyStatement"/>
        <module name="EqualsHashCode"/>
        <module name="HiddenField">
@@ -115,7 +115,6 @@
            <property name="ignoreNumbers" value="-1, 0, 0.5, 1, 2, 3"/>
        </module>
        <module name="MissingSwitchDefault"/>
-        <module name="RedundantThrows"/>
        <module name="SimplifyBooleanExpression"/>
        <module name="SimplifyBooleanReturn"/>
        <!-- Don't like errors for `final` missing
@@ -3,19 +3,45 @@
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.onarandombox.multiversecore</groupId>
    <artifactId>Multiverse-Core</artifactId>
-    <version>2.3</version>
+    <version>5.0.0-SNAPSHOT</version>
    <name>Multiverse-Core</name>
    <description>World Management Plugin</description>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.build.number>UNKNOWN</project.build.number>
+        <project.bitly-access-token>bitly-access-token</project.bitly-access-token>
    </properties>

    <repositories>
+        <!-- Spigot -->
+        <repository>
+            <id>spigot-repo</id>
+            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
+        </repository>
        <repository>
            <id>onarandombox</id>
            <url>http://repo.onarandombox.com/content/groups/public</url>
        </repository>
+        <repository>
+            <id>spigot</id>
+            <url>https://hub.spigotmc.org/nexus/content/groups/public/</url>
+        </repository>
+        <repository>
+            <id>vault-repo</id>
+            <url>http://nexus.hc.to/content/repositories/pub_releases</url>
+        </repository>
+        <repository>
+            <id>minebench-repo</id>
+            <url>https://repo.minebench.de/</url>
+        </repository>
+        <repository>
+            <id>CodeMC</id>
+            <url>https://repo.codemc.org/repository/maven-public</url>
+        </repository>
+        <repository>
+            <id>aikar</id>
+            <url>https://repo.aikar.co/content/groups/aikar/</url>
+        </repository>
    </repositories>

    <pluginRepositories>
@@ -48,6 +74,17 @@
                <project.build.number>${env.BUILD_NUMBER}</project.build.number>
            </properties>
        </profile>
+        <profile>
+            <id>bitly</id>
+            <activation>
+                <property>
+                    <name>env.BITLY_ACCESS_TOKEN</name>
+                </property>
+            </activation>
+            <properties>
+                <project.bitly-access-token>${env.BITLY_ACCESS_TOKEN}</project.bitly-access-token>
+            </properties>
+        </profile>
    </profiles>

    <build>
@@ -57,61 +94,62 @@
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
-                <version>2.3.2</version>
+                <version>3.7.0</version>
                <configuration>
-                    <source>1.6</source>
-                    <target>1.6</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                </configuration>
            </plugin>
-            <!-- Build Helper - Additional Source Folders -->
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>build-helper-maven-plugin</artifactId>
-                <version>1.7</version>
-                <executions>
-                    <execution>
-                        <id>add-wsdl-source</id>
-                        <phase>generate-sources</phase>
-                        <goals>
-                            <goal>add-source</goal>
-                        </goals>
-                        <configuration>
-                            <sources>
-                                <source>${project.basedir}/lib/allpay/src/main/java</source>
-                                <source>${project.basedir}/lib/commandhandler/src</source>
-                                <source>${project.basedir}/lib/commandhandler/lib/ShellParser/src</source>
-                            </sources>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
            <plugin>
                <groupId>com.google.code.maven-replacer-plugin</groupId>
                <artifactId>maven-replacer-plugin</artifactId>
-                <version>1.3.8</version>
+                <version>1.4.1</version>
                <executions>
                    <execution>
+                        <id>replace-bitly-access-token</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>replace</goal>
+                        </goals>
+                        <configuration>
+                            <basedir>${project.build.sourceDirectory}</basedir>
+                            <includes>
+                                <include>com/onarandombox/MultiverseCore/utils/webpaste/BitlyURLShortener.java</include>
+                            </includes>
+                            <replacements>
+                                <replacement>
+                                    <token>bitly-access-token</token>
+                                    <value>${project.bitly-access-token}</value>
+                                </replacement>
+                            </replacements>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>replace-maven-version-number</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>replace</goal>
                        </goals>
+                        <configuration>
+                            <basedir>${project.build.directory}/classes</basedir>
+                            <includes>
+                                <include>plugin.yml</include>
+                            </includes>
+                            <replacements>
+                                <replacement>
+                                    <token>maven-version-number</token>
+                                    <value>${project.version}-b${project.build.number}</value>
+                                </replacement>
+                            </replacements>
+                        </configuration>
                    </execution>
                </executions>
-                <configuration>
-                    <file>target/classes/plugin.yml</file>
-                    <replacements>
-                        <replacement>
-                            <token>maven-version-number</token>
-                            <value>${project.version}-b${project.build.number}</value>
-                        </replacement>
-                    </replacements>
-                </configuration>
            </plugin>
            <!-- Jar Plugin -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
-                <version>2.3.1</version>
+                <version>3.0.2</version>
                <configuration>
                    <archive>
                        <manifestEntries>
@@ -119,16 +157,10 @@
                    </archive>
                </configuration>
            </plugin>
-            <!-- Maven Source Plugin -->
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>2.1.2</version>
-            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.11</version>
+                <version>3.0.0-M3</version>
                <configuration>
                    <parallel>methods</parallel>
                    <threadCount>10</threadCount>
@@ -141,141 +173,239 @@
                    <dependency>
                        <groupId>org.apache.maven.surefire</groupId>
                        <artifactId>surefire-junit47</artifactId>
-                        <version>2.11</version>
+                        <version>3.0.0-M3</version>
                    </dependency>
                </dependencies>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-checkstyle-plugin</artifactId>
-                <version>2.8</version>
+                <version>2.17</version>
                <configuration>
                    <enableRulesSummary>true</enableRulesSummary>
                    <configLocation>${project.basedir}/config/mv_checks.xml</configLocation>
                </configuration>
            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>3.0.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>2.10.4</version>
+                <executions>
+                    <execution>
+                        <id>javadoc-jar</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                        <configuration>
+                            <failOnError>false</failOnError>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.2.4</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <relocations>
+                                <relocation>
+                                    <pattern>me.main__.util</pattern>
+                                    <shadedPattern>com.onarandombox.serializationconfig</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>buscript</pattern>
+                                    <shadedPattern>com.onarandombox.buscript</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>org.bstats</pattern>
+                                    <shadedPattern>com.onarandombox.bstats</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>com.dumptruckman.minecraft.util.Logging</pattern>
+                                    <shadedPattern>com.onarandombox.MultiverseCore.utils.CoreLogging</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>com.dumptruckman.minecraft.util.DebugLog</pattern>
+                                    <shadedPattern>com.onarandombox.MultiverseCore.utils.DebugFileLogger</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>org.codehaus.jettison</pattern>
+                                    <shadedPattern>com.onarandombox.jettison</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>de.themoep.idconverter</pattern>
+                                    <shadedPattern>com.onarandombox.idconverter</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>co.aikar.commands</pattern>
+                                    <shadedPattern>com.onarandombox.acf</shadedPattern>
+                                </relocation>
+                                <relocation>
+                                    <pattern>co.aikar.locales</pattern>
+                                    <shadedPattern>com.onarandombox.locales</shadedPattern>
+                                </relocation>
+                            </relocations>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>se.eris</groupId>
+                <artifactId>notnull-instrumenter-maven-plugin</artifactId>
+                <version>1.0.0</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>instrument</goal>
+                            <goal>tests-instrument</goal>
+                        </goals>
+                        <configuration>
+                            <notNull>
+                                <param>org.jetbrains.annotations.NotNull</param>
+                                <param>javax.validation.constraints.NotNull</param>
+                            </notNull>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
        </plugins>
    </build>

    <dependencies>
-        <!-- Bukkit Dependency -->
        <dependency>
-            <groupId>org.bukkit</groupId>
-            <artifactId>bukkit</artifactId>
-            <version>1.1-R1-SNAPSHOT</version>
-            <type>jar</type>
-            <scope>compile</scope>
+           <groupId>org.bukkit</groupId>
+           <artifactId>bukkit</artifactId>
+           <version>1.13.2-R0.1-SNAPSHOT</version>
+           <scope>provided</scope>
        </dependency>
-        <!-- Bukkit Dependency -->
-        <!-- Start of Spout -->
+        <!-- SerializationConfig Dependency -->
        <dependency>
-            <groupId>org.getspout</groupId>
-            <artifactId>spoutpluginapi</artifactId>
-            <version>dev-SNAPSHOT</version>
+            <groupId>me.main__.util</groupId>
+            <artifactId>SerializationConfig</artifactId>
+            <version>1.7</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.bukkit</groupId>
+                    <artifactId>bukkit</artifactId>
+                </exclusion>
+            </exclusions>
        </dependency>
-        <!-- End of Spout -->
-        <!-- Start of Economy Dependencies -->
+        <!-- End of SerializationConfig Dependency -->
+        <!-- Start of Economy Dependency -->
        <dependency>
-            <groupId>cosine.boseconomy</groupId>
-            <artifactId>BOSEconomy</artifactId>
-            <version>0.6.2</version>
-            <type>jar</type>
-            <scope>compile</scope>
+            <groupId>net.milkbowl.vault</groupId>
+            <artifactId>VaultAPI</artifactId>
+            <version>1.7</version>
+            <scope>provided</scope>
+        </dependency>
+        <!-- End of Economy Dependency -->
+        <!-- Start of CommandHandler Dependency -->
+        <dependency>
+            <groupId>co.aikar</groupId>
+            <artifactId>acf-paper</artifactId>
+            <version>0.5.0-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>com.dumptruckman.minecraft</groupId>
+            <artifactId>buscript</artifactId>
+            <version>2.0-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.bstats</groupId>
+            <artifactId>bstats-bukkit</artifactId>
+            <version>1.8</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.bukkit</groupId>
+                    <artifactId>bukkit</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>com.dumptruckman.minecraft</groupId>
+            <artifactId>Logging</artifactId>
+            <version>1.1.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations</artifactId>
+            <version>16.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>de.themoep.idconverter</groupId>
+            <artifactId>mappings</artifactId>
+            <version>1.2-SNAPSHOT</version>
        </dependency>

-        <dependency>
-            <groupId>fr.crafter.tickleman.RealShop</groupId>
-            <artifactId>RealShop</artifactId>
-            <version>0.63</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.iCo6</groupId>
-            <artifactId>iConomy</artifactId>
-            <version>6.0</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.iConomy</groupId>
-            <artifactId>iConomy</artifactId>
-            <version>5.0</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.nijiko.coelho.iConomy</groupId>
-            <artifactId>iConomy</artifactId>
-            <version>4.65</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.earth2me.essentials</groupId>
-            <artifactId>Essentials</artifactId>
-            <version>2.4.2</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-        <dependency>
-            <groupId>me.ashtheking.currency</groupId>
-            <artifactId>MultiCurrency</artifactId>
-            <version>0.09</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-        <dependency>
-            <groupId>ca.agnate</groupId>
-            <artifactId>EconXP</artifactId>
-            <version>1.0.0</version>
-            <type>jar</type>
-            <scope>compile</scope>
-        </dependency>
-        <!-- End of Economy Dependencies -->
        <!-- Start of Test Dependencies -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
-            <version>4.8.2</version>
+            <version>4.12</version>
+            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
-            <version>1.4.9</version>
+            <version>2.0.9</version>
            <type>jar</type>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-easymock</artifactId>
-            <version>1.4.9</version>
+            <version>2.0.9</version>
            <type>jar</type>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
-            <artifactId>powermock-api-mockito</artifactId>
-            <version>1.4.9</version>
+            <artifactId>powermock-api-mockito2</artifactId>
+            <version>2.0.9</version>
            <type>jar</type>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.easymock</groupId>
            <artifactId>easymock</artifactId>
-            <version>3.0</version>
+            <version>4.0.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>2.4</version>
            <scope>test</scope>
        </dependency>
-        <!-- End of Test Dependencies -->
    </dependencies>
    <distributionManagement>
        <repository>
-            <id>OnARandomBox</id>
-            <url>http://repo.onarandombox.com/content/repositories/multiverse</url>
+            <id>benergy10</id>
+            <url>http://repo.benergy10.dev/repository/minecraft/</url>
        </repository>
+        <snapshotRepository>
+            <id>benergy10</id>
+            <url>http://repo.benergy10.dev/repository/minecraft-snapshots/</url>
+        </snapshotRepository>
    </distributionManagement>
 </project>
@@ -0,0 +1,385 @@
+package com.onarandombox.MultiverseCore;
+
+import java.util.Map;
+
+import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.api.MultiverseCoreConfig;
+import com.onarandombox.MultiverseCore.event.MVDebugModeEvent;
+import me.main__.util.SerializationConfig.NoSuchPropertyException;
+import me.main__.util.SerializationConfig.Property;
+import me.main__.util.SerializationConfig.SerializationConfig;
+import org.bukkit.Bukkit;
+
+/**
+ * Our configuration.
+ */
+public class MultiverseCoreConfiguration extends SerializationConfig implements MultiverseCoreConfig {
+    private static MultiverseCoreConfiguration instance;
+
+    /**
+     * Sets the statically saved instance.
+     * @param instance The new instance.
+     */
+    public static void setInstance(MultiverseCoreConfiguration instance) {
+        MultiverseCoreConfiguration.instance = instance;
+    }
+
+    /**
+     * @return True if the static instance of config is set.
+     */
+    public static boolean isSet() {
+        return instance != null;
+    }
+
+    /**
+     * Gets the statically saved instance.
+     * @return The statically saved instance.
+     */
+    public static MultiverseCoreConfiguration getInstance() {
+        if (instance == null)
+            throw new IllegalStateException("The instance wasn't set!");
+        return instance;
+    }
+
+    @Property
+    private volatile boolean enforceaccess;
+    @Property
+    private volatile boolean prefixchat;
+    @Property
+    private volatile String prefixchatformat;
+    @Property
+    private volatile boolean useasyncchat;
+    @Property
+    private volatile boolean teleportintercept;
+    @Property
+    private volatile boolean firstspawnoverride;
+    @Property
+    private volatile boolean displaypermerrors;
+    @Property
+    private volatile boolean enablebuscript;
+    @Property
+    private volatile int globaldebug;
+    @Property
+    private volatile boolean silentstart;
+    @Property
+    private volatile int messagecooldown;
+    @Property
+    private volatile double version;
+    @Property
+    private volatile String firstspawnworld;
+    @Property
+    private volatile int teleportcooldown;
+    @Property
+    private volatile boolean defaultportalsearch;
+    @Property
+    private volatile int portalsearchradius;
+    @Property
+    private volatile boolean autopurge;
+    @Property
+    private volatile boolean idonotwanttodonate;
+
+    public MultiverseCoreConfiguration() {
+        super();
+        MultiverseCoreConfiguration.setInstance(this);
+    }
+
+    public MultiverseCoreConfiguration(Map<String, Object> values) {
+        super(values);
+        MultiverseCoreConfiguration.setInstance(this);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void setDefaults() {
+        // BEGIN CHECKSTYLE-SUPPRESSION: MagicNumberCheck
+        enforceaccess = false;
+        useasyncchat = true;
+        prefixchat = true;
+        prefixchatformat = "[%world%]%chat%";
+        teleportintercept = true;
+        firstspawnoverride = true;
+        displaypermerrors = true;
+        enablebuscript = true;
+        globaldebug = 0;
+        messagecooldown = 5000;
+        teleportcooldown = 1000;
+        this.version = 2.9;
+        silentstart = false;
+        defaultportalsearch = false;
+        portalsearchradius = 128;
+        autopurge = true;
+        idonotwanttodonate = false;
+        // END CHECKSTYLE-SUPPRESSION: MagicNumberCheck
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean setConfigProperty(String property, String value) {
+        try {
+            return this.setProperty(property, value, true);
+        } catch (NoSuchPropertyException e) {
+            return false;
+        }
+    }
+
+    // And here we go:
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean getEnforceAccess() {
+        return this.enforceaccess;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setEnforceAccess(boolean enforceAccess) {
+        this.enforceaccess = enforceAccess;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean getPrefixChat() {
+        return this.prefixchat;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setPrefixChat(boolean prefixChat) {
+        this.prefixchat = prefixChat;
+    }
+    
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public String getPrefixChatFormat() {
+        return this.prefixchatformat;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setPrefixChatFormat(String prefixChatFormat) {
+        this.prefixchatformat = prefixChatFormat;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean getTeleportIntercept() {
+        return this.teleportintercept;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setTeleportIntercept(boolean teleportIntercept) {
+        this.teleportintercept = teleportIntercept;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean getFirstSpawnOverride() {
+        return this.firstspawnoverride;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setFirstSpawnOverride(boolean firstSpawnOverride) {
+        this.firstspawnoverride = firstSpawnOverride;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean getDisplayPermErrors() {
+        return this.displaypermerrors;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean getEnableBuscript() {
+        return this.enablebuscript;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setEnableBuscript(boolean enableBuscript) {
+        this.enablebuscript = enableBuscript;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setDisplayPermErrors(boolean displayPermErrors) {
+        this.displaypermerrors = displayPermErrors;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public int getGlobalDebug() {
+        return this.globaldebug;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setGlobalDebug(int globalDebug) {
+        this.globaldebug = globalDebug;
+        Logging.setDebugLevel(globalDebug);
+        Bukkit.getPluginManager().callEvent(new MVDebugModeEvent(globalDebug));
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public int getMessageCooldown() {
+        return this.messagecooldown;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setMessageCooldown(int messageCooldown) {
+        this.messagecooldown = messageCooldown;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public double getVersion() {
+        return this.version;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setVersion(int version) {
+        this.version = version;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public String getFirstSpawnWorld() {
+        return this.firstspawnworld;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setFirstSpawnWorld(String firstSpawnWorld) {
+        this.firstspawnworld = firstSpawnWorld;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public int getTeleportCooldown() {
+        return this.teleportcooldown;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setTeleportCooldown(int teleportCooldown) {
+        this.teleportcooldown = teleportCooldown;
+    }
+
+    @Override
+    public void setUseAsyncChat(boolean useAsyncChat) {
+        this.useasyncchat = useAsyncChat;
+    }
+
+    @Override
+    public boolean getUseAsyncChat() {
+        return this.useasyncchat;
+    }
+
+    @Override
+    public void setSilentStart(boolean silentStart) {
+        Logging.setShowingConfig(!silentStart);
+        this.silentstart = silentStart;
+    }
+
+    @Override
+    public boolean getSilentStart() {
+        return silentstart;
+    }
+
+    @Override
+    public void setUseDefaultPortalSearch(boolean useDefaultPortalSearch) {
+        defaultportalsearch = useDefaultPortalSearch;
+    }
+
+    @Override
+    public boolean isUsingDefaultPortalSearch() {
+        return defaultportalsearch;
+    }
+
+    @Override
+    public void setPortalSearchRadius(int searchRadius) {
+        this.portalsearchradius = searchRadius;
+    }
+
+    @Override
+    public int getPortalSearchRadius() {
+        return portalsearchradius;
+    }
+
+    @Override
+    public boolean isAutoPurgeEnabled() {
+        return autopurge;
+    }
+
+    @Override
+    public void setAutoPurgeEnabled(boolean autopurge) {
+        this.autopurge = autopurge;
+    }
+
+    @Override
+    public boolean isShowingDonateMessage() {
+        return !idonotwanttodonate;
+    }
+
+    @Override
+    public void setShowDonateMessage(boolean showDonateMessage) {
+        this.idonotwanttodonate = !showDonateMessage;
+    }
+}
@@ -0,0 +1,655 @@
+package com.onarandombox.MultiverseCore;
+
+import com.onarandombox.MultiverseCore.MVWorld.NullLocation;
+import com.onarandombox.MultiverseCore.configuration.EntryFee;
+import com.onarandombox.MultiverseCore.configuration.SpawnLocation;
+import com.onarandombox.MultiverseCore.configuration.SpawnSettings;
+import com.onarandombox.MultiverseCore.configuration.WorldPropertyValidator;
+import com.onarandombox.MultiverseCore.enums.AllowedPortalType;
+import com.onarandombox.MultiverseCore.enums.EnglishChatColor;
+import com.onarandombox.MultiverseCore.enums.EnglishChatStyle;
+import me.main__.util.SerializationConfig.IllegalPropertyValueException;
+import me.main__.util.SerializationConfig.Property;
+import me.main__.util.SerializationConfig.SerializationConfig;
+import me.main__.util.SerializationConfig.Serializor;
+import me.main__.util.SerializationConfig.Validator;
+import me.main__.util.SerializationConfig.VirtualProperty;
+import org.bukkit.ChatColor;
+import org.bukkit.Difficulty;
+import org.bukkit.GameMode;
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.World.Environment;
+import org.bukkit.configuration.serialization.SerializableAs;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/*
+ * This is a property class, I think we don't need that much javadoc.
+ * BEGIN CHECKSTYLE-SUPPRESSION: Javadoc
+ */
+
+@SerializableAs("MVWorld")
+public class WorldProperties extends SerializationConfig {
+
+    private static final Map<String, String> PROPERTY_ALIASES;
+
+    static {
+        PROPERTY_ALIASES = new HashMap<String, String>();
+        PROPERTY_ALIASES.put("curr", "entryfee.currency");
+        PROPERTY_ALIASES.put("currency", "entryfee.currency");
+        PROPERTY_ALIASES.put("price", "entryfee.amount");
+        PROPERTY_ALIASES.put("scaling", "scale");
+        PROPERTY_ALIASES.put("aliascolor", "color");
+        PROPERTY_ALIASES.put("heal", "autoHeal");
+        PROPERTY_ALIASES.put("storm", "allowWeather");
+        PROPERTY_ALIASES.put("weather", "allowWeather");
+        PROPERTY_ALIASES.put("spawnmemory", "keepSpawnInMemory");
+        PROPERTY_ALIASES.put("memory", "keepSpawnInMemory");
+        PROPERTY_ALIASES.put("mode", "gameMode");
+        PROPERTY_ALIASES.put("diff", "difficulty");
+        PROPERTY_ALIASES.put("spawnlocation", "spawn");
+        PROPERTY_ALIASES.put("limit", "playerLimit");
+        PROPERTY_ALIASES.put("animals", "spawning.animals.spawn");
+        PROPERTY_ALIASES.put("monsters", "spawning.monsters.spawn");
+        PROPERTY_ALIASES.put("animalsrate", "spawning.animals.spawnrate");
+        PROPERTY_ALIASES.put("monstersrate", "spawning.monsters.spawnrate");
+        PROPERTY_ALIASES.put("flight", "allowFlight");
+        PROPERTY_ALIASES.put("fly", "allowFlight");
+        PROPERTY_ALIASES.put("allowfly", "allowFlight");
+    }
+
+    private final boolean keepSpawnFallback;
+
+    public WorldProperties(Map<String, Object> values) {
+        super(values);
+        Object keepSpawnObject = values.get("keepSpawnInMemory");
+        keepSpawnFallback = keepSpawnObject == null || Boolean.parseBoolean(keepSpawnObject.toString());
+    }
+
+    public WorldProperties() {
+        super();
+        keepSpawnFallback = true;
+    }
+
+    public WorldProperties(final boolean fixSpawn, final Environment environment) {
+        super();
+        if (!fixSpawn) {
+            this.adjustSpawn = false;
+        }
+        setScaling(getDefaultScale(environment));
+        keepSpawnFallback = true;
+    }
+
+    void setMVWorld(MVWorld world) {
+        registerObjectUsing(world);
+        registerGlobalValidator(new WorldPropertyValidator());
+    }
+
+    /**
+     * Serializor for the color-property.
+     */
+    private static final class EnumPropertySerializor<T extends Enum<T>> implements Serializor<T, String> {
+        @Override
+        public String serialize(T from) {
+            return from.toString();
+        }
+
+        @Override
+        public T deserialize(String serialized, Class<T> wanted) throws IllegalPropertyValueException {
+            try {
+                return Enum.valueOf(wanted, serialized.toUpperCase());
+            } catch (IllegalArgumentException e) {
+                throw new IllegalPropertyValueException(e);
+            }
+        }
+    }
+
+    /**
+     * Serializor for the difficulty-property.
+     */
+    private static final class DifficultyPropertySerializor implements Serializor<Difficulty, String> {
+        @Override
+        public String serialize(Difficulty from) {
+            return from.toString();
+        }
+
+        @Override
+        public Difficulty deserialize(String serialized, Class<Difficulty> wanted) throws IllegalPropertyValueException {
+            try {
+                return Difficulty.getByValue(Integer.parseInt(serialized));
+            } catch (Exception e) {
+            }
+            try {
+                return Difficulty.valueOf(serialized.toUpperCase());
+            } catch (Exception e) {
+            }
+            throw new IllegalPropertyValueException();
+        }
+    }
+
+    /**
+     * Serializor for the gameMode-property.
+     */
+    private static final class GameModePropertySerializor implements Serializor<GameMode, String> {
+        @Override
+        public String serialize(GameMode from) {
+            return from.toString();
+        }
+
+        @Override
+        public GameMode deserialize(String serialized, Class<GameMode> wanted) throws IllegalPropertyValueException {
+            try {
+                return GameMode.getByValue(Integer.parseInt(serialized));
+            } catch (NumberFormatException nfe) {
+            }
+            try {
+                return GameMode.valueOf(serialized.toUpperCase());
+            } catch (Exception e) {
+            }
+            throw new IllegalPropertyValueException();
+        }
+    }
+
+    /**
+     * Serializor for the time-property.
+     */
+    private static final class TimePropertySerializor implements Serializor<Long, String> {
+        // BEGIN CHECKSTYLE-SUPPRESSION: MagicNumberCheck
+        private static final String TIME_REGEX = "(\\d\\d?):?(\\d\\d)(a|p)?m?";
+        private static final  Map<String, String> TIME_ALIASES;
+        static {
+            Map<String, String> staticTimes = new HashMap<String, String>();
+            staticTimes.put("morning", "8:00");
+            staticTimes.put("day", "12:00");
+            staticTimes.put("noon", "12:00");
+            staticTimes.put("midnight", "0:00");
+            staticTimes.put("night", "20:00");
+
+            // now set TIME_ALIASES to a "frozen" map
+            TIME_ALIASES = Collections.unmodifiableMap(staticTimes);
+        }
+
+        @Override
+        public String serialize(Long from) {
+            // I'm tired, so they get time in 24 hour for now.
+            // Someone else can add 12 hr format if they want :P
+
+            int hours = (int) ((from / 1000 + 8) % 24);
+            int minutes = (int) (60 * (from % 1000) / 1000);
+
+            return String.format("%d:%02d", hours, minutes);
+        }
+
+        @Override
+        public Long deserialize(String serialized, Class<Long> wanted) throws IllegalPropertyValueException {
+            if (TIME_ALIASES.containsKey(serialized.toLowerCase())) {
+                serialized = TIME_ALIASES.get(serialized.toLowerCase());
+            }
+            // Regex that extracts a time in the following formats:
+            // 11:11pm, 11:11, 23:11, 1111, 1111p, and the aliases at the top of this file.
+            Pattern pattern = Pattern.compile(TIME_REGEX, Pattern.CASE_INSENSITIVE);
+            Matcher matcher = pattern.matcher(serialized);
+            matcher.find();
+            int hour = 0;
+            double minute = 0;
+            int count = matcher.groupCount();
+            if (count >= 2) {
+                hour = Integer.parseInt(matcher.group(1));
+                minute = Integer.parseInt(matcher.group(2));
+            }
+            // If there were 4 matches (all, hour, min, am/pm)
+            if (count == 4) {
+                // We want 24 hour time for calcs, but if they
+                // added a p[m], turn it into a 24 hr one.
+                if (matcher.group(3).equals("p")) {
+                    hour += 12;
+                }
+            }
+            // Translate 24th hour to 0th hour.
+            if (hour == 24) {
+                hour = 0;
+            }
+            // Clamp the hour
+            if (hour > 23 || hour < 0) {
+                throw new IllegalPropertyValueException("Illegal hour!");
+            }
+            // Clamp the minute
+            if (minute > 59 || minute < 0) {
+                throw new IllegalPropertyValueException("Illegal minute!");
+            }
+            // 60 seconds in a minute, time needs to be in hrs * 1000, per
+            // the bukkit docs.
+            double totaltime = (hour + (minute / 60.0)) * 1000;
+            // Somehow there's an 8 hour offset...
+            totaltime -= 8000;
+            if (totaltime < 0) {
+                totaltime = 24000 + totaltime;
+            }
+
+            return (long) totaltime;
+        }
+        // END CHECKSTYLE-SUPPRESSION: MagicNumberCheck
+    }
+
+    // --------------------------------------------------------------
+    // Begin properties
+    @Property(description = "Sorry, 'hidden' must either be: true or false.")
+    private volatile boolean hidden;
+    @Property(description = "Alias must be a valid string.")
+    private volatile String alias;
+    @Property(serializor = EnumPropertySerializor.class, description = "Sorry, 'color' must be a valid color-name.")
+    private volatile EnglishChatColor color;
+    @Property(serializor = EnumPropertySerializor.class, description = "Sorry, 'style' must be a valid style-name.")
+    private volatile EnglishChatStyle style;
+    @Property(description = "Sorry, 'pvp' must either be: true or false.", virtualType = Boolean.class, persistVirtual = true)
+    volatile VirtualProperty<Boolean> pvp; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property(description = "Scale must be a positive double value. ex: 2.3")
+    private volatile double scale;
+    @Property(description = "You must set this to the NAME not alias of a world.")
+    private volatile String respawnWorld;
+    @Property(description = "Sorry, this must either be: true or false.")
+    private volatile boolean allowWeather;
+    @Property(serializor = DifficultyPropertySerializor.class, virtualType = Difficulty.class, persistVirtual = true,
+            description = "Difficulty must be set as one of the following: peaceful easy normal hard")
+    volatile VirtualProperty<Difficulty> difficulty; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property(description = "Sorry, 'animals' must either be: true or false.")
+    private volatile SpawnSettings spawning;
+    @Property
+    volatile EntryFee entryfee;
+    @Property(description = "Sorry, 'hunger' must either be: true or false.")
+    private volatile boolean hunger;
+    @Property(description = "Sorry, 'autoheal' must either be: true or false.")
+    private volatile boolean autoHeal;
+    @Property(description = "Sorry, 'adjustspawn' must either be: true or false.")
+    private volatile boolean adjustSpawn;
+    @Property(serializor = EnumPropertySerializor.class, description = "Allow portal forming must be NONE, ALL, NETHER or END.")
+    private volatile AllowedPortalType portalForm;
+    @Property(serializor = GameModePropertySerializor.class, description = "GameMode must be set as one of the following: survival creative")
+    private volatile GameMode gameMode;
+    @Property(description = "Sorry, this must either be: true or false.", virtualType = Boolean.class, persistVirtual = true)
+    volatile VirtualProperty<Boolean> keepSpawnInMemory; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property
+    volatile SpawnLocation spawnLocation; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property(virtualType = Location.class,
+            description = "There is no help available for this variable. Go bug Rigby90 about it.")
+    volatile VirtualProperty<Location> spawn; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property(description = "Set this to false ONLY if you don't want this world to load itself on server restart.")
+    private volatile boolean autoLoad;
+    @Property(description = "If a player dies in this world, shoudld they go to their bed?")
+    private volatile boolean bedRespawn;
+    @Property
+    private volatile List<String> worldBlacklist;
+    @Property(serializor = TimePropertySerializor.class, virtualType = Long.class,
+            description = "Set the time to whatever you want! (Will NOT freeze time)")
+    volatile VirtualProperty<Long> time; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property
+    volatile Environment environment; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property
+    volatile long seed; // SUPPRESS CHECKSTYLE: VisibilityModifier
+    @Property
+    private volatile String generator;
+    @Property
+    private volatile int playerLimit;
+    @Property
+    private volatile boolean allowFlight;
+    // End of properties
+    // --------------------------------------------------------------
+
+    void setValidator(String fieldName, Validator validator) {
+        registerValidator(fieldName, validator);    //To change body of overridden methods use File | Settings | File Templates.
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void copyValues(SerializationConfig other) {
+        super.copyValues(other);
+    }
+
+    /**
+     * This prepares the MVWorld for unloading.
+     */
+    public void cacheVirtualProperties() {
+        try {
+            this.buildVPropChanges();
+        } catch (IllegalStateException e) {
+            // do nothing
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void setDefaults() {
+        this.hidden = false;
+        this.alias = new String();
+        this.color = EnglishChatColor.WHITE;
+        this.style = EnglishChatStyle.NORMAL;
+        this.scale = 1D;
+        this.respawnWorld = new String();
+        this.allowWeather = true;
+        this.spawning = new SpawnSettings();
+        this.entryfee = new EntryFee();
+        this.hunger = true;
+        this.autoHeal = true;
+        this.adjustSpawn = true;
+        this.portalForm = AllowedPortalType.ALL;
+        this.gameMode = GameMode.SURVIVAL;
+        this.spawnLocation = new NullLocation();
+        this.autoLoad = true;
+        this.bedRespawn = true;
+        this.worldBlacklist = new ArrayList<String>();
+        this.generator = null;
+        this.playerLimit = -1;
+        this.allowFlight = true;
+    }
+
+    private static double getDefaultScale(Environment environment) {
+        if (environment == Environment.NETHER) {
+            return 8.0; // SUPPRESS CHECKSTYLE: MagicNumberCheck
+        } else if (environment == Environment.THE_END) {
+            return 16.0; // SUPPRESS CHECKSTYLE: MagicNumberCheck
+        }
+        return 1.0;
+    }
+
+    /**
+     * getAliases().
+     * @return The alias-map.
+     * @see SerializationConfig
+     */
+    protected static Map<String, String> getAliases() {
+        return PROPERTY_ALIASES;
+    }
+
+    void flushChanges() {
+        this.flushPendingVPropChanges();
+    }
+
+    public String getAlias() {
+        return this.alias;
+    }
+
+    public void setAlias(String alias) {
+        this.setPropertyValueUnchecked("alias", alias);
+    }
+
+    public Environment getEnvironment() {
+        return this.environment;
+    }
+
+    public void setEnvironment(Environment environment) {
+        this.setPropertyValueUnchecked("environment", environment);
+    }
+
+    public long getSeed() {
+        return this.seed;
+    }
+
+    public void setSeed(long seed) {
+        this.setPropertyValueUnchecked("seed", seed);
+    }
+
+    public String getGenerator() {
+        return this.generator;
+    }
+
+    public void setGenerator(String generator) {
+        this.setPropertyValueUnchecked("generator", generator);
+    }
+
+    public int getPlayerLimit() {
+        return this.playerLimit;
+    }
+
+    public void setPlayerLimit(int limit) {
+        this.setPropertyValueUnchecked("playerLimit", limit);
+    }
+
+    public boolean canAnimalsSpawn() {
+        return this.spawning.getAnimalSettings().doSpawn();
+    }
+
+    public void setAllowAnimalSpawn(boolean animals) {
+        this.setPropertyValueUnchecked("spawning.animals.spawn", animals);
+    }
+
+    public List<String> getAnimalList() {
+        // These don't fire events at the moment. Should they?
+        return this.spawning.getAnimalSettings().getExceptions();
+    }
+
+    public boolean canMonstersSpawn() {
+        return this.spawning.getMonsterSettings().doSpawn();
+    }
+
+    public void setAllowMonsterSpawn(boolean monsters) {
+        this.setPropertyValueUnchecked("spawning.monsters.spawn", monsters);
+    }
+
+    public int getAnimalSpawnRate() {
+        return this.spawning.getAnimalSettings().getSpawnRate();
+    }
+
+    public int getMonsterSpawnRate() {
+        return this.spawning.getMonsterSettings().getSpawnRate();
+    }
+
+    public List<String> getMonsterList() {
+        // These don't fire events at the moment. Should they?
+        return this.spawning.getMonsterSettings().getExceptions();
+    }
+
+    public boolean isPVPEnabled() {
+        return this.pvp.get();
+    }
+
+    public void setPVPMode(boolean pvp) {
+        this.setPropertyValueUnchecked("pvp", pvp);
+    }
+
+    public boolean isHidden() {
+        return this.hidden;
+    }
+
+    public void setHidden(boolean hidden) {
+        this.setPropertyValueUnchecked("hidden", hidden);
+    }
+
+    public List<String> getWorldBlacklist() {
+        return this.worldBlacklist;
+    }
+
+    public double getScaling() {
+        return this.scale;
+    }
+
+    public boolean setScaling(double scaling) {
+        return this.setPropertyValueUnchecked("scale", scaling);
+    }
+
+    public boolean setColor(String aliasColor) {
+        return this.setPropertyUnchecked("color", aliasColor);
+    }
+
+    public boolean setColor(EnglishChatColor color) {
+        return this.setPropertyValueUnchecked("color", color);
+    }
+
+    public EnglishChatColor getColor() {
+        return this.color;
+    }
+
+    public String getRespawnToWorld() {
+        return this.respawnWorld;
+    }
+
+    public boolean setRespawnToWorld(String respawnToWorld) {
+        return this.setPropertyValueUnchecked("respawnWorld", respawnToWorld);
+    }
+
+    public Material getCurrency() {
+        return this.entryfee.getCurrency();
+    }
+
+    public void setCurrency(@Nullable Material currency) {
+        this.setPropertyValueUnchecked("entryfee.currency", currency);
+    }
+
+    public double getPrice() {
+        return this.entryfee.getAmount();
+    }
+
+    public void setPrice(double price) {
+        this.setPropertyValueUnchecked("entryfee.amount", price);
+    }
+
+    public boolean setGameMode(String mode) {
+        return this.setPropertyUnchecked("gameMode", mode);
+    }
+
+    public boolean setGameMode(GameMode mode) {
+        return this.setPropertyValueUnchecked("gameMode", mode);
+    }
+
+    public GameMode getGameMode() {
+        return this.gameMode;
+    }
+
+    public void setEnableWeather(boolean weather) {
+        this.setPropertyValueUnchecked("allowWeather", weather);
+    }
+
+    public boolean isWeatherEnabled() {
+        return this.allowWeather;
+    }
+
+    public boolean isKeepingSpawnInMemory() {
+        if (keepSpawnInMemory == null) {
+            return keepSpawnFallback;
+        }
+        try {
+            return this.keepSpawnInMemory.get();
+        } catch (IllegalStateException e) {
+            return keepSpawnFallback;
+        }
+    }
+
+    public void setKeepSpawnInMemory(boolean value) {
+        this.setPropertyValueUnchecked("keepSpawnInMemory", value);
+    }
+
+    public boolean getHunger() {
+        return this.hunger;
+    }
+
+    public void setHunger(boolean hunger) {
+        this.setPropertyValueUnchecked("hunger", hunger);
+    }
+
+    public Location getSpawnLocation() {
+        return this.spawn.get();
+    }
+
+    public void setSpawnLocation(Location l) {
+        this.setPropertyValueUnchecked("spawn", l);
+    }
+
+    public Difficulty getDifficulty() {
+        return this.difficulty.get();
+    }
+
+    @Deprecated // SUPPRESS CHECKSTYLE: Deprecated
+    public boolean setDifficulty(String difficulty) {
+        return this.setPropertyUnchecked("difficulty", difficulty);
+    }
+
+    public boolean setDifficulty(Difficulty difficulty) {
+        return this.setPropertyValueUnchecked("difficulty", difficulty);
+    }
+
+    public boolean getAutoHeal() {
+        return this.autoHeal;
+    }
+
+    public void setAutoHeal(boolean heal) {
+        this.setPropertyValueUnchecked("autoHeal", heal);
+    }
+
+    public void setAdjustSpawn(boolean adjust) {
+        this.setPropertyValueUnchecked("adjustSpawn", adjust);
+    }
+
+    public boolean getAdjustSpawn() {
+        return this.adjustSpawn;
+    }
+
+    public void setAutoLoad(boolean load) {
+        this.setPropertyValueUnchecked("autoLoad", load);
+    }
+
+    public boolean getAutoLoad() {
+        return this.autoLoad;
+    }
+
+    public void setBedRespawn(boolean respawn) {
+        this.setPropertyValueUnchecked("bedRespawn", respawn);
+    }
+
+    public boolean getBedRespawn() {
+        return this.bedRespawn;
+    }
+
+    public String getAllPropertyNames() {
+        ChatColor myColor = ChatColor.AQUA;
+        StringBuilder result = new StringBuilder();
+        Map<String, Object> serialized = this.serialize();
+        for (String key : serialized.keySet()) {
+            result.append(myColor).append(key).append(' ');
+            myColor = (myColor == ChatColor.AQUA) ? ChatColor.GOLD : ChatColor.AQUA;
+        }
+        return result.toString();
+    }
+
+    public String getTime() {
+        return this.getPropertyUnchecked("time");
+    }
+
+    public boolean setTime(String timeAsString) {
+        return this.setPropertyUnchecked("time", timeAsString);
+    }
+
+    public AllowedPortalType getAllowedPortals() {
+        return portalForm;
+    }
+
+    public void allowPortalMaking(AllowedPortalType portalType) {
+        this.setPropertyValueUnchecked("portalForm", portalType);
+    }
+
+    public EnglishChatStyle getStyle() {
+        return style;
+    }
+
+    public boolean setStyle(String style) {
+        return this.setPropertyUnchecked("style", style);
+    }
+
+    public boolean getAllowFlight() {
+        return this.allowFlight;
+    }
+
+    public void setAllowFlight(final boolean allowFlight) {
+        this.setPropertyValueUnchecked("allowFlight", allowFlight);
+    }
+}
@@ -0,0 +1,79 @@
+package com.onarandombox.MultiverseCore.api;
+
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.entity.Minecart;
+import org.bukkit.entity.Vehicle;
+
+/**
+ * Used to get block/location-related information.
+ */
+public interface BlockSafety {
+    /**
+     * This function checks whether the block at the given coordinates are above air or not.
+     * @param l The {@link Location} of the block.
+     * @return True if the block at that {@link Location} is above air.
+     */
+    boolean isBlockAboveAir(Location l);
+
+    /**
+     * Checks if a player can spawn safely at the given coordinates.
+     * @param world The {@link World}.
+     * @param x The x-coordinate.
+     * @param y The y-coordinate.
+     * @param z The z-coordinate.
+     * @return True if a player can spawn safely at the given coordinates.
+     */
+    boolean playerCanSpawnHereSafely(World world, double x, double y, double z);
+
+    /**
+     * This function checks whether the block at the coordinates given is safe or not by checking for Lava/Fire/Air
+     * etc. This also ensures there is enough space for a player to spawn!
+     *
+     * @param l The {@link Location}
+     * @return Whether the player can spawn safely at the given {@link Location}
+     */
+    boolean playerCanSpawnHereSafely(Location l);
+
+    /**
+     * Gets a safe bed spawn location OR null if the bed is invalid.
+     * @param l The location of the bead head (block with the pillow on it).
+     * @return Safe location around the bed or null if no location was found.
+     */
+    Location getSafeBedSpawn(Location l);
+
+    /**
+     * Gets the location of the top block at the specified {@link Location}.
+     * @param l Any {@link Location}.
+     * @return The {@link Location} of the top-block.
+     */
+    Location getTopBlock(Location l);
+
+    /**
+     * Gets the location of the top block at the specified {@link Location}.
+     * @param l Any {@link Location}.
+     * @return The {@link Location} of the top-block.
+     */
+    Location getBottomBlock(Location l);
+
+    /**
+     * Checks if an entity would be on track at the specified {@link Location}.
+     * @param l The {@link Location}.
+     * @return True if an entity would be on tracks at the specified {@link Location}.
+     */
+    boolean isEntitiyOnTrack(Location l);
+
+    /**
+     * Checks if the specified {@link Minecart} can spawn safely.
+     * @param cart The {@link Minecart}.
+     * @return True if the minecart can spawn safely.
+     */
+    boolean canSpawnCartSafely(Minecart cart);
+
+    /**
+     * Checks if the specified {@link Vehicle} can spawn safely.
+     * @param vehicle The {@link Vehicle}.
+     * @return True if the vehicle can spawn safely.
+     */
+    boolean canSpawnVehicleSafely(Vehicle vehicle);
+}
@@ -7,12 +7,17 @@

 package com.onarandombox.MultiverseCore.api;

-import com.fernferret.allpay.AllPay;
-import com.fernferret.allpay.GenericBank;
+import buscript.Buscript;
+import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
 import com.onarandombox.MultiverseCore.destination.DestinationFactory;
-import com.onarandombox.MultiverseCore.utils.*;
-import com.pneumaticraft.commandhandler.CommandHandler;
-import org.bukkit.configuration.file.FileConfiguration;
+import com.onarandombox.MultiverseCore.utils.AnchorManager;
+import com.onarandombox.MultiverseCore.utils.MVEconomist;
+import com.onarandombox.MultiverseCore.utils.MVPermissions;
+import com.onarandombox.MultiverseCore.utils.MVPlayerSession;
+import com.onarandombox.MultiverseCore.utils.SimpleBlockSafety;
+import com.onarandombox.MultiverseCore.utils.SimpleLocationManipulation;
+import com.onarandombox.MultiverseCore.utils.SimpleSafeTTeleporter;
+import com.onarandombox.MultiverseCore.utils.VaultHandler;
 import org.bukkit.entity.Player;

 /**
@@ -23,18 +28,22 @@ import org.bukkit.entity.Player;
 public interface Core {

    /**
-     * Gets the Multiverse config file.
+     * Returns the Vault handler used by Multiverse.  The returned object will have all methods necessary for
+     * interfacing with Vault.
     *
-     * @return The Multiverse config file.
+     * @return the Vault handler for Multiverse.
+     * @deprecated we are now using {@link #getEconomist()} for all economy needs.
     */
-    FileConfiguration getMVConfiguration();
+    @Deprecated
+    VaultHandler getVaultHandler();

    /**
-     * Gets the Banking system that Multiverse-Core has hooked into.
+     * Retrieves Multiverse's friendly economist. The economist can be used for dealing with economies without
+     * worrying about any of the messy details.
     *
-     * @return A {@link GenericBank} that can be used for payments.
+     * @return the economy manager for Multiverse.
     */
-    GenericBank getBank();
+    MVEconomist getEconomist();

    /**
     * Reloads the Multiverse Configuration files:
@@ -46,9 +55,9 @@ public interface Core {
     * Gets the Multiverse message system. This allows you to send messages
     * to users at specified intervals.
     *
-     * @return The loaded {@link MVMessaging}.
+     * @return The loaded {@link MultiverseMessaging}.
     */
-    MVMessaging getMessaging();
+    MultiverseMessaging getMessaging();

    /**
     * Gets the {@link MVPlayerSession} for the given player.
@@ -61,14 +70,6 @@ public interface Core {
     */
    MVPlayerSession getPlayerSession(Player player);

-    /**
-     * Gets the instantiated Safe-T-Teleporter for performing
-     * safe teleports.
-     *
-     * @return A non-null {@link SafeTTeleporter}.
-     */
-    SafeTTeleporter getTeleporter();
-
    /**
     * Multiverse uses an advanced permissions setup, this object
     * simplifies getting/setting permissions.
@@ -78,12 +79,12 @@ public interface Core {
    MVPermissions getMVPerms();

    /**
-     * Multiverse uses {@link CommandHandler} to make adding and using commands
+     * Multiverse uses {@link MVCommandManager} to make adding and using commands
     * a piece of cake.
     *
-     * @return A non-null {@link CommandHandler}.
+     * @return A non-null {@link MVCommandManager}.
     */
-    CommandHandler getCommandHandler();
+    MVCommandManager getMVCommandManager();

    /**
     * Gets the factory class responsible for loading many different destinations
@@ -96,7 +97,7 @@ public interface Core {
    /**
     * Gets the primary class responsible for managing Multiverse Worlds.
     *
-     * @return {@link WorldManager}.
+     * @return {@link MVWorldManager}.
     */
    MVWorldManager getMVWorldManager();

@@ -114,32 +115,6 @@ public interface Core {
     */
    AnchorManager getAnchorManager();

-    /**
-     * Used by queued commands to regenerate a world on a delay.
-     *
-     * @param name Name of the world to regenerate
-     * @param useNewSeed If a new seed should be used
-     * @param randomSeed IF the new seed should be random
-     * @param seed The seed of the world.
-     *
-     * @return True if success, false if fail.
-     */
-    Boolean regenWorld(String name, Boolean useNewSeed, Boolean randomSeed, String seed);
-
-    /**
-     * Sets the {@link GenericBank}-Bank AllPay is using.
-     *
-     * @param bank The new {@link GenericBank}
-     */
-    void setBank(GenericBank bank);
-
-    /**
-     * Gets this plugin's {@link AllPay}-Banker.
-     *
-     * @return An {@link AllPay}-Banker
-     */
-    AllPay getBanker();
-
    /**
     * Decrements the number of plugins that have specifically hooked into core.
     */
@@ -163,4 +138,65 @@ public interface Core {
     * @return The readable authors-{@link String}
     */
    String getAuthors();
+
+    /**
+     * Gets the {@link BlockSafety} this {@link Core} is using.
+     * @return The {@link BlockSafety} this {@link Core} is using.
+     * @see BlockSafety
+     * @see SimpleBlockSafety
+     */
+    BlockSafety getBlockSafety();
+
+    /**
+     * Sets the {@link BlockSafety} this {@link Core} is using.
+     * @param blockSafety The new {@link BlockSafety}.
+     * @see BlockSafety
+     * @see SimpleBlockSafety
+     */
+    void setBlockSafety(BlockSafety blockSafety);
+
+    /**
+     * Gets the {@link LocationManipulation} this {@link Core} is using.
+     * @return The {@link LocationManipulation} this {@link Core} is using.
+     * @see LocationManipulation
+     * @see SimpleLocationManipulation
+     */
+    LocationManipulation getLocationManipulation();
+
+    /**
+     * Sets the {@link LocationManipulation} this {@link Core} is using.
+     * @param locationManipulation The new {@link LocationManipulation}.
+     * @see LocationManipulation
+     * @see SimpleLocationManipulation
+     */
+    void setLocationManipulation(LocationManipulation locationManipulation);
+
+    /**
+     * Gets the {@link SafeTTeleporter} this {@link Core} is using.
+     * @return The {@link SafeTTeleporter} this {@link Core} is using.
+     * @see SafeTTeleporter
+     * @see SimpleSafeTTeleporter
+     */
+    SafeTTeleporter getSafeTTeleporter();
+
+    /**
+     * Sets the {@link SafeTTeleporter} this {@link Core} is using.
+     * @param safeTTeleporter The new {@link SafeTTeleporter}.
+     * @see SafeTTeleporter
+     * @see SimpleSafeTTeleporter
+     */
+    void setSafeTTeleporter(SafeTTeleporter safeTTeleporter);
+
+    /**
+     * Gets the {@link MultiverseCoreConfig}.
+     * @return The configuration.
+     */
+    MultiverseCoreConfig getMVConfig();
+
+    /**
+     * Gets the buscript object for Multiverse.  This is what handles Javascript processing.
+     *
+     * @return The Multiverse buscript object.
+     */
+    Buscript getScriptAPI();
 }
@@ -1,20 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.api;
-
-/**
- * A fancy text.
- */
-public interface FancyText {
-    /**
-     * Gets the {@link String}-representation of this {@link FancyText}.
-     *
-     * @return The {@link String}-representation of this {@link FancyText}.
-     */
-    String getFancyText();
-}
@@ -0,0 +1,107 @@
+package com.onarandombox.MultiverseCore.api;
+
+import org.bukkit.Location;
+import org.bukkit.entity.Vehicle;
+import org.bukkit.util.Vector;
+
+/**
+ * Used to manipulate locations.
+ */
+public interface LocationManipulation {
+    /**
+     * Convert a Location into a Colon separated string to allow us to store it in text.
+     * <p>
+     * WORLD:X,Y,Z:yaw:pitch
+     * <p>
+     * The corresponding String2Loc function is {@link #stringToLocation}
+     *
+     * @param location The Location to save.
+     * @return The location as a string in this format: WORLD:x,y,z:yaw:pitch
+     */
+    String locationToString(Location location);
+
+    /**
+     * This method simply does some rounding, rather than forcing a call to the server to get the blockdata.
+     *
+     * @param l The location to round to the block location
+     * @return A rounded location.
+     */
+    Location getBlockLocation(Location l);
+
+    /**
+     * Returns a new location from a given string. The format is as follows:
+     * <p>
+     * WORLD:X,Y,Z:yaw:pitch
+     * <p>
+     * The corresponding Location2String function is {@link #stringToLocation}
+     *
+     * @param locationString The location represented as a string (WORLD:X,Y,Z:yaw:pitch)
+     * @return A new location defined by the string or null if the string was invalid.
+     */
+    Location stringToLocation(String locationString);
+
+    /**
+     * Returns a colored string with x, y, z axis.
+     *
+     * @param l The {@link Location}
+     * @return The {@link String}
+     */
+    String strAxis(Location l);
+
+    /**
+     * Returns a colored string with the coords.
+     *
+     * @param l The {@link Location}
+     * @return The {@link String}
+     */
+    String strCoords(Location l);
+
+    /**
+     * Converts a location to a printable readable formatted string including pitch/yaw.
+     *
+     * @param l The {@link Location}
+     * @return The {@link String}
+     */
+    String strCoordsRaw(Location l);
+
+    /**
+     * Return the NESW Direction a Location is facing.
+     *
+     * @param location The {@link Location}
+     * @return The NESW Direction
+     */
+    String getDirection(Location location);
+
+    /**
+     * Returns the float yaw position for the given cardinal direction.
+     *
+     * @param orientation The cardinal direction
+     * @return The yaw
+     */
+    float getYaw(String orientation);
+
+    /**
+     * Returns a speed float from a given vector.
+     *
+     * @param v The {@link Vector}
+     * @return The speed
+     */
+    float getSpeed(Vector v);
+
+    /**
+     * Returns a translated vector from the given direction.
+     *
+     * @param v The old {@link Vector}
+     * @param direction The new direction
+     * @return The translated {@link Vector}
+     */
+    Vector getTranslatedVector(Vector v, String direction);
+
+    /**
+     * Returns the next Location that a {@link Vehicle} is traveling at.
+     *
+     * @param v The {@link Vehicle}
+     * @return The {@link Location}
+     */
+    Location getNextBlock(Vehicle v);
+}
@@ -7,11 +7,17 @@

 package com.onarandombox.MultiverseCore.api;

+import com.dumptruckman.minecraft.util.Logging;
 import org.bukkit.Server;

 import java.util.logging.Level;

-/** A simple API to require plugins to have a log method. */
+/**
+ * A simple API to require plugins to have a log method.
+ *
+ * @deprecated Replaced by {@link Logging}.
+ * */
+@Deprecated
 public interface LoggablePlugin {
    /**
     * Logs a message at the specified level.
@@ -45,7 +45,7 @@ public interface MVDestination {
    boolean isThisType(JavaPlugin plugin, String destination);

    /**
-     * Returns the location a specific entity will spawn at.
+     * Returns the location a specific entity will spawn at when being teleported to this Destination.
     * <p>
     * To just retrieve the location as it is stored you can just pass null, but be warned some destinations may return
     * null back to you if you do this. It is always safer to pass an actual entity. This is used so things like
@@ -30,14 +30,14 @@ public interface MVPlugin extends LoggablePlugin {
    /**
     * Gets the reference to MultiverseCore.
     *
-     * @return A valid {@link MultiverseCore}.
+     * @return A valid {@link com.onarandombox.MultiverseCore}.
     */
    MultiverseCore getCore();

    /**
     * Sets the reference to MultiverseCore.
     *
-     * @param core A valid {@link MultiverseCore}.
+     * @param core A valid {@link com.onarandombox.MultiverseCore}.
     */
    void setCore(MultiverseCore core);

@@ -7,7 +7,9 @@

 package com.onarandombox.MultiverseCore.api;

+import com.onarandombox.MultiverseCore.enums.WorldValidationResult;
 import com.onarandombox.MultiverseCore.utils.PurgeWorlds;
+import com.onarandombox.MultiverseCore.utils.SimpleWorldPurger;
 import org.bukkit.World;
 import org.bukkit.World.Environment;
 import org.bukkit.WorldType;
@@ -28,37 +30,65 @@ public interface MVWorldManager {
    /**
     * Add a new World to the Multiverse Setup.
     *
-     * @param name       World Name
-     * @param env        Environment Type
-     * @param seedString The seed in the form of a string.
-     *                   If the seed is a Long,
-     *                   it will be interpreted as such.
-     * @param type       The Type of the world to be made.
-     * @param generator  The Custom generator plugin to use.
+     * @param name               World Name
+     * @param env                Environment Type
+     * @param seedString         The seed in the form of a string.
+     *                             If the seed is a Long,
+     *                             it will be interpreted as such.
+     * @param type               The Type of the world to be made.
+     * @param generateStructures If true, this world will get NPC villages.
+     * @param generator          The Custom generator plugin to use.
     * @return True if the world is added, false if not.
     */
-    boolean addWorld(String name, Environment env, String seedString, WorldType type, String generator);
+    boolean addWorld(String name, Environment env, String seedString, WorldType type, Boolean generateStructures,
+                     String generator);

    /**
     * Add a new World to the Multiverse Setup.
     *
-     * @param name           World Name
-     * @param env            Environment Type
-     * @param seedString     The seed in the form of a string.
-     *                       If the seed is a Long,
-     *                       it will be interpreted as such.
-     * @param type       The Type of the world to be made.
-     * @param generator      The Custom generator plugin to use.
+     * @param name               World Name
+     * @param env                Environment Type
+     * @param seedString         The seed in the form of a string.
+     *                             If the seed is a Long,
+     *                             it will be interpreted as such.
+     * @param type               The Type of the world to be made.
+     * @param generateStructures If true, this world will get NPC villages.
+     * @param generator          The Custom generator plugin to use.
     * @param useSpawnAdjust If true, multiverse will search for a safe spawn. If not, It will not modify the level.dat.
     * @return True if the world is added, false if not.
     */
-    boolean addWorld(String name, Environment env, String seedString, WorldType type, String generator, boolean useSpawnAdjust);
+    boolean addWorld(String name, Environment env, String seedString, WorldType type, Boolean generateStructures,
+                     String generator, boolean useSpawnAdjust);

    /**
-     * Remove the world from the Multiverse list, from the
-     * config and deletes the folder.
+     * Make a copy of a world.
     *
-     * @param name The name of the world to remove
+     * @param oldName            Name of world to be copied
+     * @param newName            Name of world to be created
+     * @param generator          The Custom generator plugin to use. Ignored.
+     * @return True if the world is copied successfully, false if not.
+     * @deprecated Use {@link #cloneWorld(String, String)} instead.
+     */
+    @Deprecated
+    boolean cloneWorld(String oldName, String newName, String generator);
+
+    /**
+     * Make a copy of a world.
+     *
+     * @param oldName
+     *            Name of world to be copied
+     * @param newName
+     *            Name of world to be created
+     * @return True if the world is copied successfully, false if not.
+     */
+    boolean cloneWorld(String oldName, String newName);
+
+    /**
+     * Remove the world from the Multiverse list, from the config and deletes
+     * the folder.
+     *
+     * @param name
+     *            The name of the world to remove
     * @return True if success, false if failure.
     */
    boolean deleteWorld(String name);
@@ -74,6 +104,17 @@ public interface MVWorldManager {
     */
    boolean deleteWorld(String name, boolean removeConfig);

+    /**
+     *
+     * @param name The name of the world to remove
+     * @param removeFromConfig If true(default), we'll remove the entries from the
+     *                         config. If false, they'll stay and the world may come back.
+     * @param deleteWorldFolder If true the world folder will be completely deleted. If false
+     *                          only the contents of the world folder will be deleted
+     * @return True if success, false if failure.
+     */
+    boolean deleteWorld(String name, boolean removeFromConfig, boolean deleteWorldFolder);
+
    /**
     * Unload a world from Multiverse.
     *
@@ -82,6 +123,15 @@ public interface MVWorldManager {
     */
    boolean unloadWorld(String name);

+    /**
+     * Unload a world from Multiverse with option to prevent calling unloadWorld in Bukkit.
+     *
+     * @param name Name of the world to unload
+     * @param unloadBukkit True if Bukkit world should be unloaded
+     * @return True if the world was unloaded, false if not.
+     */
+    boolean unloadWorld(String name, boolean unloadBukkit);
+
    /**
     * Loads the world. Only use this if the world has been
     * unloaded with {@link #unloadWorld(String)}.
@@ -150,7 +200,7 @@ public interface MVWorldManager {
    boolean isMVWorld(World world);

    /**
-     * Load the Worlds & Settings from the configuration file.
+     * Load the Worlds &amp; Settings from the configuration file.
     *
     * @param forceLoad If set to true, this will perform a total
     *                  reset and not just load new worlds.
@@ -158,7 +208,7 @@ public interface MVWorldManager {
    void loadWorlds(boolean forceLoad);

    /**
-     * Loads the Worlds & Settings for any worlds that bukkit loaded before us.
+     * Loads the Worlds &amp; Settings for any worlds that bukkit loaded before us.
     * <p>
     * This way people will _always_ have some worlds in the list.
     */
@@ -168,9 +218,21 @@ public interface MVWorldManager {
     * Return the World Purger.
     *
     * @return A valid {@link PurgeWorlds}.
+     * @deprecated {@link PurgeWorlds} is deprecated!
     */
+    @Deprecated
    PurgeWorlds getWorldPurger();

+    /**
+     * Gets the {@link WorldPurger}.
+     * <p>
+     * TODO: Remove {@link #getWorldPurger()} and replace it with this method.
+     * @return The {@link WorldPurger} this {@link MVWorldManager} is using.
+     * @see WorldPurger
+     * @see SimpleWorldPurger
+     */
+    WorldPurger getTheWorldPurger();
+
    /**
     * Gets the world players will spawn in on first join.
     * Currently this always returns worlds.get(0) from Bukkit.
@@ -227,4 +289,46 @@ public interface MVWorldManager {
     * @return The {@link MultiverseWorld} new players should spawn in.
     */
    MultiverseWorld getFirstSpawnWorld();
+
+    /**
+     * Regenerates a world.
+     *
+     * @param name Name of the world to regenerate
+     * @param useNewSeed If a new seed should be used
+     * @param randomSeed IF the new seed should be random
+     * @param seed The seed of the world.
+     *
+     * @return True if success, false if fail.
+     */
+    boolean regenWorld(String name, boolean useNewSeed, boolean randomSeed, String seed);
+
+    boolean isKeepingSpawnInMemory(World world);
+    
+    /**
+     * Checks whether Multiverse knows about a provided unloaded world. This
+     * method will check the parameter against the alias mappings.
+     *
+     * @param name The name of the unloaded world
+     * @param includeLoaded The value to return if the world is loaded
+     *
+     * @return True if the world exists and is unloaded. False if the world
+     * does not exist. {@code includeLoaded} if the world exists and is loaded.
+     */
+    boolean hasUnloadedWorld(String name, boolean includeLoaded);
+
+    /**
+     * Check if a world name is a possible importable world folder.
+     *
+     * @param worldName Name of the world you want to check.
+     * @return True if world is valid, false otherwise.
+     */
+    boolean isValidWorld(String worldName);
+
+    /**
+     * Check if a world name is a possible importable world folder.
+     *
+     * @param worldName Name of the world you want to check.
+     * @return WorldValidationResult.VALID if world is valid, else the reason why its not valid.
+     */
+    WorldValidationResult validateWorld(String worldName);
 }
@@ -0,0 +1,242 @@
+package com.onarandombox.MultiverseCore.api;
+
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
+
+/**
+ * The configuration of MultiverseCore.
+ */
+public interface MultiverseCoreConfig extends ConfigurationSerializable {
+    /**
+     * Sets a property using a {@link String}.
+     * @param property The name of the property.
+     * @param value The value.
+     * @return True on success, false if the operation failed.
+     */
+    boolean setConfigProperty(String property, String value);
+
+    /**
+     * Sets portalCooldown.
+     * @param portalCooldown The new value.
+     */
+    void setTeleportCooldown(int portalCooldown);
+
+    /**
+     * Gets portalCooldown.
+     * @return portalCooldown.
+     */
+    int getTeleportCooldown();
+
+    /**
+     * Sets firstSpawnWorld.
+     * @param firstSpawnWorld The new value.
+     */
+    void setFirstSpawnWorld(String firstSpawnWorld);
+
+    /**
+     * Gets firstSpawnWorld.
+     * @return firstSpawnWorld.
+     */
+    String getFirstSpawnWorld();
+
+    /**
+     * Sets version.
+     * @param version The new value.
+     */
+    void setVersion(int version);
+
+    /**
+     * Gets version.
+     * @return version.
+     */
+    double getVersion();
+
+    /**
+     * Sets messageCooldown.
+     * @param messageCooldown The new value.
+     */
+    void setMessageCooldown(int messageCooldown);
+
+    /**
+     * Gets messageCooldown.
+     * @return messageCooldown.
+     */
+    int getMessageCooldown();
+
+    /**
+     * Sets globalDebug.
+     * @param globalDebug The new value.
+     */
+    void setGlobalDebug(int globalDebug);
+
+    /**
+     * Gets globalDebug.
+     * @return globalDebug.
+     */
+    int getGlobalDebug();
+
+    /**
+     * Sets displayPermErrors.
+     * @param displayPermErrors The new value.
+     */
+    void setDisplayPermErrors(boolean displayPermErrors);
+
+    /**
+     * Gets displayPermErrors.
+     * @return displayPermErrors.
+     */
+    boolean getDisplayPermErrors();
+
+    /**
+     * Sets enableBuscript.
+     * @param enableBuscript The new value.
+     */
+    void setEnableBuscript(boolean enableBuscript);
+
+    /**
+     * Gets enableBuscript.
+     * @return enableBuscript.
+     */
+    boolean getEnableBuscript();
+
+    /**
+     * Sets firstSpawnOverride.
+     * @param firstSpawnOverride The new value.
+     */
+    void setFirstSpawnOverride(boolean firstSpawnOverride);
+
+    /**
+     * Gets firstSpawnOverride.
+     * @return firstSpawnOverride.
+     */
+    boolean getFirstSpawnOverride();
+
+    /**
+     * Sets teleportIntercept.
+     * @param teleportIntercept The new value.
+     */
+    void setTeleportIntercept(boolean teleportIntercept);
+
+    /**
+     * Gets teleportIntercept.
+     * @return teleportIntercept.
+     */
+    boolean getTeleportIntercept();
+
+    /**
+     * Sets prefixChat.
+     * @param prefixChat The new value.
+     */
+    void setPrefixChat(boolean prefixChat);
+
+    /**
+     * Gets prefixChat.
+     * @return prefixChat.
+     */
+    boolean getPrefixChat();
+    
+    /**
+     * Sets prefixChatFormat.
+     * @param prefixChatFormat The new value.
+     */
+    void setPrefixChatFormat(String prefixChatFormat);
+
+    /**
+     * Gets prefixChatFormat.
+     * @return prefixChatFormat.
+     */
+    String getPrefixChatFormat();
+
+    /**
+     * Sets enforceAccess.
+     * @param enforceAccess The new value.
+     */
+    void setEnforceAccess(boolean enforceAccess);
+
+    /**
+     * Gets enforceAccess.
+     * @return enforceAccess.
+     */
+    boolean getEnforceAccess();
+
+    /**
+     * Sets useasyncchat.
+     * @param useAsyncChat The new value.
+     */
+    void setUseAsyncChat(boolean useAsyncChat);
+
+    /**
+     * Gets useasyncchat.
+     * @return useasyncchat.
+     */
+    boolean getUseAsyncChat();
+
+    /**
+     * Sets whether to suppress startup messages.
+     *
+     * @param silentStart true to suppress messages.
+     */
+    void setSilentStart(boolean silentStart);
+
+    /**
+     * Whether we are suppressing startup messages.
+     *
+     * @return true if we are suppressing startup messages.
+     */
+    boolean getSilentStart();
+
+    /**
+     * Sets whether or not to let Bukkit determine portal search radius on its own or if Multiverse should give input.
+     *
+     * @param useDefaultPortalSearch True to let Bukkit determine portal search radius on its own.
+     */
+    void setUseDefaultPortalSearch(boolean useDefaultPortalSearch);
+
+    /**
+     * Gets whether or not Bukkit will be determining portal search radius on its own or if Multiverse should help.
+     *
+     * @return True means Bukkit will use its own default values.
+     */
+    boolean isUsingDefaultPortalSearch();
+
+    /**
+     * Sets the radius at which vanilla style portals will be searched for to connect to worlds together.
+     *
+     * @param searchRadius The portal search radius.
+     */
+    void setPortalSearchRadius(int searchRadius);
+
+    /**
+     * Gets the radius at which vanilla style portals will be searched for to connect to worlds together.
+     *
+     * @return The portal search radius.
+     */
+    int getPortalSearchRadius();
+
+    /**
+     * Gets whether or not the automatic purge of entities is enabled.
+     *
+     * @return True if automatic purge is enabled.
+     */
+    boolean isAutoPurgeEnabled();
+
+    /**
+     * Sets whether or not the automatic purge of entities is enabled.
+     *
+     * @param autopurge True if automatic purge should be enabled.
+     */
+    void setAutoPurgeEnabled(boolean autopurge);
+
+    /**
+     * Gets whether or not the donation/patreon messages are shown.
+     *
+     * @return True if donation/patreon messages should be shown.
+     */
+    boolean isShowingDonateMessage();
+
+    /**
+     * Sets whether or not the donation/patreon messages are shown.
+     *
+     * @param idonotwanttodonate True if donation/patreon messages should be shown.
+     */
+    void setShowDonateMessage(boolean idonotwanttodonate);
+}
@@ -0,0 +1,56 @@
+package com.onarandombox.MultiverseCore.api;
+
+import java.util.Collection;
+
+import org.bukkit.command.CommandSender;
+
+/**
+ * Multiverse-messaging.
+ */
+public interface MultiverseMessaging {
+    /**
+     * Sets the message-cooldown.
+     * @param milliseconds The new message-cooldown in milliseconds.
+     */
+    void setCooldown(int milliseconds);
+
+    /**
+     * Sends a message to the specified sender if the cooldown has passed.
+     *
+     * @param sender         The person/console to send the message to.
+     * @param message        The message to send.
+     * @param ignoreCooldown If true this message will always be sent. Useful for things like menus
+     * @return true if the message was sent, false if not.
+     */
+    boolean sendMessage(CommandSender sender, String message, boolean ignoreCooldown);
+
+    /**
+     * Sends a group of messages to the specified sender if the cooldown has passed.
+     * This method is needed, since sending many messages in quick succession would violate
+     * the cooldown.
+     *
+     * @param sender         The person/console to send the message to.
+     * @param messages       The messages to send.
+     * @param ignoreCooldown If true these messages will always be sent. Useful for things like menus
+     * @return true if the message was sent, false if not.
+     */
+    boolean sendMessages(CommandSender sender, String[] messages, boolean ignoreCooldown);
+
+    /**
+     * Sends a group of messages to the specified sender if the cooldown has passed.
+     * This method is needed, since sending many messages in quick succession would violate
+     * the cooldown.
+     *
+     * @param sender         The person/console to send the message to.
+     * @param messages       The messages to send.
+     * @param ignoreCooldown If true these messages will always be sent. Useful for things like menus
+     * @return true if the message was sent, false if not.
+     */
+    boolean sendMessages(CommandSender sender, Collection<String> messages, boolean ignoreCooldown);
+
+    /**
+     * Gets the message-cooldown.
+     * @return The message-cooldown.
+     */
+    int getCooldown();
+}
@@ -0,0 +1,136 @@
+package com.onarandombox.MultiverseCore.api;
+
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.utils.DebugLog;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+import java.util.logging.Level;
+
+/**
+ * Make things easier for MV-Plugins!
+ */
+public abstract class MultiversePlugin extends JavaPlugin implements MVPlugin {
+    private MultiverseCore core;
+    /**
+     * Prefix for standard log entrys.
+     */
+    protected String logTag;
+    private DebugLog debugLog;
+
+    /**
+     * {@inheritDoc}
+     *
+     * Note: You can't override this, use {@link #onPluginEnable()} instead!
+     * @see #onPluginEnable()
+     */
+    @Override
+    public final void onEnable() {
+        MultiverseCore theCore = (MultiverseCore) this.getServer().getPluginManager().getPlugin("Multiverse-Core");
+        if (theCore == null) {
+            this.getLogger().severe("Core not found! The plugin dev needs to add a dependency!");
+            this.getLogger().severe("Disabling!");
+            this.getServer().getPluginManager().disablePlugin(this);
+            return;
+        }
+        if (theCore.getProtocolVersion() < this.getProtocolVersion()) {
+            this.getLogger().severe("You need a newer version of Multiverse-Core!");
+            this.getLogger().severe("Disabling!");
+            this.getServer().getPluginManager().disablePlugin(this);
+            return;
+        }
+        this.setCore(theCore);
+
+        this.getServer().getLogger().info(String.format("%s - Version %s enabled - By %s",
+                this.getDescription().getName(), this.getDescription().getVersion(), getAuthors()));
+        getDataFolder().mkdirs();
+        File debugLogFile = new File(getDataFolder(), "debug.log");
+        try {
+            debugLogFile.createNewFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        debugLog = new DebugLog(this.getDescription().getName(), getDataFolder() + File.separator + "debug.log");
+        debugLog.setTag(String.format("[%s-Debug]", this.getDescription().getName()));
+
+        this.onPluginEnable();
+    }
+
+    /**
+     * Parse the Authors Array into a readable String with ',' and 'and'.
+     *
+     * @return The readable authors-{@link String}
+     */
+    protected String getAuthors() {
+        String authors = "";
+        List<String> auths = this.getDescription().getAuthors();
+        if (auths.size() == 0) {
+            return "";
+        }
+
+        if (auths.size() == 1) {
+            return auths.get(0);
+        }
+
+        for (int i = 0; i < auths.size(); i++) {
+            if (i == this.getDescription().getAuthors().size() - 1) {
+                authors += " and " + this.getDescription().getAuthors().get(i);
+            } else {
+                authors += ", " + this.getDescription().getAuthors().get(i);
+            }
+        }
+        return authors.substring(2);
+    }
+
+    /**
+     * Called when the plugin is enabled.
+     * @see #onEnable()
+     */
+    protected abstract void onPluginEnable();
+
+    @Override
+    public void log(Level level, String msg) {
+        int debugLevel = this.getCore().getMVConfig().getGlobalDebug();
+        if ((level == Level.FINE && debugLevel >= 1) || (level == Level.FINER && debugLevel >= 2)
+                || (level == Level.FINEST && debugLevel >= 3)) {
+            debugLog.log(level, msg);
+        } else if (level != Level.FINE && level != Level.FINER && level != Level.FINEST) {
+            String message = new StringBuilder(getLogTag()).append(msg).toString();
+            this.getServer().getLogger().log(level, message);
+            debugLog.log(level, message);
+        }
+    }
+
+    private String getLogTag() {
+        if (logTag == null)
+            logTag = String.format("[%s]", this.getDescription().getName());
+        return logTag;
+    }
+
+    /**
+     * Sets the debug log-tag.
+     * @param tag The new tag.
+     */
+    protected final void setDebugLogTag(String tag) {
+        this.debugLog.setTag(tag);
+    }
+
+    @Override
+    public final String dumpVersionInfo(String buffer) {
+        throw new UnsupportedOperationException("This is gone.");
+    }
+
+    @Override
+    public final MultiverseCore getCore() {
+        if (this.core == null)
+            throw new IllegalStateException("Core is null!");
+        return this.core;
+    }
+
+    @Override
+    public final void setCore(MultiverseCore core) {
+        this.core = core;
+    }
+}
@@ -7,25 +7,25 @@

 package com.onarandombox.MultiverseCore.api;

-import com.onarandombox.MultiverseCore.configuration.MVConfigProperty;
+import com.onarandombox.MultiverseCore.enums.AllowedPortalType;
 import com.onarandombox.MultiverseCore.exceptions.PropertyDoesNotExistException;
-
 import org.bukkit.ChatColor;
 import org.bukkit.Difficulty;
 import org.bukkit.GameMode;
 import org.bukkit.Location;
+import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.WorldType;
-import org.bukkit.command.CommandSender;
 import org.bukkit.permissions.Permission;
+import org.jetbrains.annotations.Nullable;

+import java.util.Collection;
 import java.util.List;

 /**
 * The API for a Multiverse Handled World.
 */
 public interface MultiverseWorld {
-
    /**
     * Returns the Bukkit world object that this world describes.
     *
@@ -34,79 +34,24 @@ public interface MultiverseWorld {
    World getCBWorld();

    /**
-     * Adds the property to the given value.
-     * It will throw a PropertyDoesNotExistException if the property is not found.
+     * Gets the name of this world. The name cannot be changed.
+     * <p>
+     * Note for plugin developers: Usually {@link #getAlias()}
+     * is what you want to use instead of this method.
     *
-     * @param property The name of a world property to set.
-     * @param value    A value in string representation, it will be parsed to the correct type.
-     * @param sender   The sender who wants this value to be set.
-     * @return True if the value was set, false if not.
-     * @throws PropertyDoesNotExistException Thrown if the property was not found in the world.
+     * @return The name of the world as a String.
     */
-    boolean setProperty(String property, String value, CommandSender sender) throws PropertyDoesNotExistException;
+    String getName();

    /**
-     * Gets the actual MVConfigProperty from this world.
-     * It will throw a PropertyDoesNotExistException if the property is not found.
+     * Gets the type of this world. As of 1.2 this will be:
+     * FLAT, NORMAL or VERSION_1_1
+     * <p>
+     * This is <b>not</b> the generator.
     *
-     * @param property The name of a world property to get.
-     * @return A valid MVWorldProperty.
-     * @throws PropertyDoesNotExistException Thrown if the property was not found in the world.
-     * @deprecated Use {@link #getProperty(String, Class)} instead
+     * @return The Type of this world.
     */
-    @Deprecated
-    MVConfigProperty<?> getProperty(String property) throws PropertyDoesNotExistException;
-
-    /**
-     * Gets the string representation of a property.
-     * It will throw a PropertyDoesNotExistException if the property is not found.
-     *
-     * @param property The name of a world property to get.
-     * @return A valid MVWorldProperty.
-     * @throws PropertyDoesNotExistException Thrown if the property was not found in the world.
-     */
-    String getPropertyValue(String property) throws PropertyDoesNotExistException;
-
-    /**
-     * Gets the actual MVConfigProperty from this world.
-     * It will throw a PropertyDoesNotExistException if the property is not found.
-     *
-     * @param property The name of a world property to get.
-     * @param expected The type of the expected property. Use Object.class if this doesn't matter for you.
-     * @param <T> The type of the expected property.
-     *
-     * @return A valid MVWorldProperty.
-     *
-     * @throws PropertyDoesNotExistException Thrown if the property was not found in the world.
-     */
-    <T> MVConfigProperty<T> getProperty(String property, Class<T> expected) throws PropertyDoesNotExistException;
-
-    /**
-     * Removes all values from the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
-     *
-     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to clear.
-     * @return True if it was cleared, false if not.
-     */
-    boolean clearVariable(String property);
-
-    /**
-     * Adds a value to the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
-     *
-     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to add a value to.
-     * @param value    A value in string representation, it will be parsed to the correct type.
-     * @return True if the value was added, false if not.
-     */
-    boolean addToVariable(String property, String value);
-
-    /**
-     * Removes a value from the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
-     *
-     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to remove a value
-     *                 from.
-     * @param value    A value in string representation, it will be parsed to the correct type.
-     * @return True if the value was removed, false if not.
-     */
-    boolean removeFromVariable(String property, String value);
+    WorldType getWorldType();

    /**
     * Gets the environment of this world.
@@ -124,27 +69,137 @@ public interface MultiverseWorld {
     */
    void setEnvironment(World.Environment environment);

+    /**
+     * Gets the difficulty of this world.
+     *
+     * @return The difficulty of this world.
+     */
+    Difficulty getDifficulty();
+
+    /**
+     * Sets the difficulty of this world and returns true if success.
+     * Valid string values are either an integer of difficulty(0-3) or
+     * the name that resides in the Bukkit enum, ex. {@code PEACEFUL}
+     *
+     * @param difficulty The difficulty to set the world to as a string.
+     * @return True if success, false if the provided string
+     *         could not be translated to a difficulty.
+     * @deprecated Use {@link #setDifficulty(Difficulty)} or, if you have to
+     * pass a string, use {@link #setPropertyValue(String, String)} instead.
+     */
+    @Deprecated
+    boolean setDifficulty(String difficulty);
+
+    /**
+     * Sets the difficulty of this world and returns {@code true} on success.
+     * Valid string values are either an integer of difficulty(0-3) or
+     * the name that resides in the Bukkit enum, ex. PEACEFUL
+     *
+     * @param difficulty The new difficulty.
+     * @return True if success, false if the operation failed... for whatever reason.
+     */
+    boolean setDifficulty(Difficulty difficulty);
+
    /**
     * Gets the world seed of this world.
     *
     * @return The Long version of the seed.
     */
-    Long getSeed();
+    long getSeed();

    /**
     * Sets the seed of this world.
     *
     * @param seed A Long that is the seed.
     */
-    void setSeed(Long seed);
+    void setSeed(long seed);

    /**
-     * Gets the name of this world. This cannot be changed.
+     * Gets the generator of this world.
     *
-     * @return The name of the world as a String.
+     * @return The name of the generator.
     */
-    String getName();
+    String getGenerator();

+    /**
+     * Sets the generator of this world.
+     *
+     * @param generator The new generator's name.
+     */
+    void setGenerator(String generator);
+
+    /**
+     * Gets the help-message for a property.
+     * @param property The name of the property.
+     * @return The help-message.
+     * @throws PropertyDoesNotExistException Thrown if the property was not found.
+     */
+    String getPropertyHelp(String property) throws PropertyDoesNotExistException;
+
+    /**
+     * Gets a property as {@link String}.
+     *
+     * @param property The name of a world property to get.
+     * @return The string-representation of that property.
+     * @throws PropertyDoesNotExistException Thrown if the property was not found in the world.
+     */
+    String getPropertyValue(String property) throws PropertyDoesNotExistException;
+
+    /**
+     * Sets a property to a given value.
+     *
+     * @param property The name of a world property to set.
+     * @param value    A value in string representation, it will be parsed to the correct type.
+     * @return True if the value was set, false if not.
+     * @throws PropertyDoesNotExistException Thrown if the property was not found in the world.
+     */
+    boolean setPropertyValue(String property, String value) throws PropertyDoesNotExistException;
+
+    /**
+     * Adds a value to the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
+     *
+     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to add a value to.
+     * @param value    A value in string representation, it will be parsed to the correct type.
+     * @return True if the value was added, false if not.
+     * @deprecated We changed the entire world-config-system. This is not compatible any more.
+     */
+    @Deprecated
+    boolean addToVariable(String property, String value);
+
+    /**
+     * Removes a value from the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
+     *
+     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to remove a value
+     *                 from.
+     * @param value    A value in string representation, it will be parsed to the correct type.
+     * @return True if the value was removed, false if not.
+     * @deprecated We changed the entire world-config-system. This is not compatible any more.
+     */
+    @Deprecated
+    boolean removeFromVariable(String property, String value);
+
+    /**
+     * Removes all values from the given property. The property must be a {@link com.onarandombox.MultiverseCore.enums.AddProperties}.
+     *
+     * @param property The name of a {@link com.onarandombox.MultiverseCore.enums.AddProperties} to clear.
+     * @return True if it was cleared, false if not.
+     * @deprecated We changed the entire world-config-system. This is not compatible any more.
+     */
+    @Deprecated
+    boolean clearVariable(String property);
+
+    /**
+     * Clears a list property (sets it to []).
+     *
+     * @param property The property to clear.
+     * @return True if success, false if fail.
+     * @deprecated We changed the entire world-config-system. This is not compatible any more.
+     */
+    @Deprecated
+    boolean clearList(String property);
+    // end of old config stuff
+
+    // permission stuff
    /**
     * Gets the lowercased name of the world. This method is required, since the permissables
     * lowercase all permissions when recalculating.
@@ -157,6 +212,21 @@ public interface MultiverseWorld {
     */
    String getPermissibleName();

+    /**
+     * Gets the permission required to enter this world.
+     *
+     * @return The permission required to be exempt from charges to/from this world.
+     */
+    Permission getAccessPermission();
+
+    /**
+     * Gets the permission required to be exempt when entering.
+     *
+     * @return The permission required to be exempt when entering.
+     */
+    Permission getExemptPermission();
+    // end of permission stuff
+
    /**
     * Gets the alias of this world.
     * <p>
@@ -173,6 +243,13 @@ public interface MultiverseWorld {
     */
    void setAlias(String alias);

+    /**
+     * Gets the color that this world's name/alias will display as.
+     *
+     * @return The color of this world.
+     */
+    ChatColor getColor();
+
    /**
     * Sets the color that this world's name/alias will display as.
     *
@@ -182,18 +259,29 @@ public interface MultiverseWorld {
    boolean setColor(String color);

    /**
-     * Gets the color that this world's name/alias will display as.
+     * Gets the style that this world's name/alias will display as.
     *
-     * @return The color of this world.
+     * @return The style of this world. {@code null} for "normal" style.
     */
-    ChatColor getColor();
+    ChatColor getStyle();
+
+    /**
+     * Sets the style that this world's name/alias will display as.
+     *
+     * @param style A valid style name.
+     * @return True if the style was set, false if not.
+     */
+    boolean setStyle(String style);

    /**
     * Tells you if someone entered a valid color.
     *
     * @param color A string that may translate to a color.
     * @return True if it is a color, false if not.
+     *
+     * @deprecated This has been moved: {@link com.onarandombox.MultiverseCore.enums.EnglishChatColor#isValidAliasColor(String)}
     */
+    @Deprecated
    boolean isValidAliasColor(String color);

    /**
@@ -203,6 +291,7 @@ public interface MultiverseWorld {
     */
    String getColoredWorldString();

+    // animals&monster stuff
    /**
     * Gets whether or not animals are allowed to spawn in this world.
     *
@@ -210,6 +299,22 @@ public interface MultiverseWorld {
     */
    boolean canAnimalsSpawn();

+    /**
+     * Sets whether or not animals can spawn.
+     * If there are values in {@link #getAnimalList()} and this is false,
+     * those animals become the exceptions, and will spawn
+     *
+     * @param allowAnimalSpawn True to allow spawning of monsters, false to prevent.
+     */
+    void setAllowAnimalSpawn(boolean allowAnimalSpawn);
+
+    /**
+     * Returns a list of animals. This list always negates the {@link #canAnimalsSpawn()} result.
+     *
+     * @return A list of animals that will spawn if {@link #canAnimalsSpawn()} is false.
+     */
+    List<String> getAnimalList();
+
    /**
     * Gets whether or not monsters are allowed to spawn in this world.
     *
@@ -218,7 +323,31 @@ public interface MultiverseWorld {
    boolean canMonstersSpawn();

    /**
-     * Turn pvp on or off. This setting is used to set the world's PVP mode, and thus relies on fakePVP
+     * Sets whether or not monsters can spawn.
+     * If there are values in {@link #getMonsterList()} and this is false,
+     * those monsters become the exceptions, and will spawn
+     *
+     * @param allowMonsterSpawn True to allow spawning of monsters, false to prevent.
+     */
+    void setAllowMonsterSpawn(boolean allowMonsterSpawn);
+
+    /**
+     * Returns a list of monsters. This list always negates the {@link #canMonstersSpawn()} result.
+     *
+     * @return A list of monsters that will spawn if {@link #canMonstersSpawn()} is false.
+     */
+    List<String> getMonsterList();
+    // end of animal&monster stuff
+
+    /**
+     * Gets whether or not PVP is enabled in this world in some form (fake or not).
+     *
+     * @return True if players can take damage from other players.
+     */
+    boolean isPVPEnabled();
+
+    /**
+     * Turn pvp on or off. This setting is used to set the world's PVP mode.
     *
     * @param pvpMode True to enable PVP damage, false to disable it.
     */
@@ -233,13 +362,6 @@ public interface MultiverseWorld {
    @Deprecated
    boolean getFakePVP();

-    /**
-     * Gets whether or not PVP is enabled in this world in some form (fake or not).
-     *
-     * @return True if players can take damage from other players.
-     */
-    boolean isPVPEnabled();
-
    /**
     * Gets whether or not this world will display in chat, mvw and mvl regardless if a user has the
     * access permissions to go to this world.
@@ -256,6 +378,13 @@ public interface MultiverseWorld {
     */
    void setHidden(boolean hidden);

+    /**
+     * Gets whether weather is enabled in this world.
+     *
+     * @return True if weather events will occur, false if not.
+     */
+    boolean isWeatherEnabled();
+
    /**
     * Sets whether or not there will be weather events in a given world.
     * If set to false, Multiverse will disable the weather in the world immediately.
@@ -265,11 +394,11 @@ public interface MultiverseWorld {
    void setEnableWeather(boolean enableWeather);

    /**
-     * Gets whether weather is enabled in this world.
+     * Gets whether or not CraftBukkit is keeping the chunks for this world in memory.
     *
-     * @return True if weather events will occur, false if not.
+     * @return True if CraftBukkit is keeping spawn chunks in memory.
     */
-    boolean isWeatherEnabled();
+    boolean isKeepingSpawnInMemory();

    /**
     * If true, tells Craftbukkit to keep a worlds spawn chunks loaded in memory (default: true)
@@ -281,29 +410,11 @@ public interface MultiverseWorld {
    void setKeepSpawnInMemory(boolean keepSpawnInMemory);

    /**
-     * Gets whether or not CraftBukkit is keeping the chunks for this world in memory.
+     * Gets the spawn location of this world.
     *
-     * @return True if CraftBukkit is keeping spawn chunks in memory.
+     * @return The spawn location of this world.
     */
-    boolean isKeepingSpawnInMemory();
-
-    /**
-     * Sets the difficulty of this world and returns true if success.
-     * Valid string values are either an integer of difficulty(0-3) or
-     * the name that resides in the Bukkit enum, ex. PEACEFUL
-     *
-     * @param difficulty The difficulty to set the world to as a string.
-     * @return True if success, false if the provided string
-     *         could not be translated to a difficulty.
-     */
-    boolean setDifficulty(String difficulty);
-
-    /**
-     * Gets the difficulty of this world.
-     *
-     * @return The difficulty of this world.
-     */
-    Difficulty getDifficulty();
+    Location getSpawnLocation();

    /**
     * Sets the spawn location for a world.
@@ -313,11 +424,11 @@ public interface MultiverseWorld {
    void setSpawnLocation(Location spawnLocation);

    /**
-     * Gets the spawn location of this world.
+     * Gets whether or not the hunger level of players will go down in a world.
     *
-     * @return The spawn location of this world.
+     * @return True if it will go down, false if it will remain steady.
     */
-    Location getSpawnLocation();
+    boolean getHunger();

    /**
     * Sets whether or not the hunger level of players will go down in a world.
@@ -327,22 +438,6 @@ public interface MultiverseWorld {
     */
    void setHunger(boolean hungerEnabled);

-    /**
-     * Gets whether or not the hunger level of players will go down in a world.
-     *
-     * @return True if it will go down, false if it will remain steady.
-     */
-    boolean getHunger();
-
-    /**
-     * Sets the game mode of this world.
-     *
-     * @param gameMode A valid game mode string (either
-     *                 an int ex. 0 or a string ex. creative).
-     * @return True if the game mode was successfully changed, false if not.
-     */
-    boolean setGameMode(String gameMode);
-
    /**
     * Gets the GameMode of this world.
     *
@@ -351,27 +446,24 @@ public interface MultiverseWorld {
    GameMode getGameMode();

    /**
-     * Gets the permission required to enter this world.
+     * Sets the game mode of this world.
     *
-     * @return The permission required to be exempt from charges to/from this world.
+     * @param gameMode A valid game mode string (either
+     *                 an int ex. 0 or a string ex. creative).
+     * @return True if the game mode was successfully changed, false if not.
+     * @deprecated Use {@link #setGameMode(GameMode)} instead. If you have to
+     * pass a string, use {@link #setPropertyValue(String, String)}.
     */
-    Permission getAccessPermission();
+    @Deprecated
+    boolean setGameMode(String gameMode);

    /**
-     * Gets the permission required to be exempt when entering.
+     * Sets the game mode of this world.
     *
-     * @return The permission required to be exempt when entering.
+     * @param gameMode The new {@link GameMode}.
+     * @return True if the game mode was successfully changed, false if not.
     */
-    Permission getExemptPermission();
-
-    /**
-     * Sets the price for entry to this world.
-     * You can think of this like an amount.
-     * The type can be set with {@link #setCurrency(int)}
-     *
-     * @param price The Amount of money/item to enter the world.
-     */
-    void setPrice(double price);
+    boolean setGameMode(GameMode gameMode);

    /**
     * Gets the amount of currency it requires to enter this world.
@@ -380,20 +472,38 @@ public interface MultiverseWorld {
     */
    double getPrice();

+    /**
+     * Sets the price for entry to this world.
+     * You can think of this like an amount.
+     * The type can be set with {@link #setCurrency(Material)}
+     *
+     * @param price The Amount of money/item to enter the world.
+     */
+    void setPrice(double price);
+
+    /**
+     * Gets the type of currency that will be used when users enter this world. A value of null indicates a non-item
+     * based currency is used.
+     *
+     * @return The type of currency that will be used when users enter this world.
+     */
+    @Nullable
+    Material getCurrency();
+
    /**
     * Sets the type of item that will be required given the price is not 0.
-     * Use -1 to use an AllPay economy, or any valid itemid
+     * Use a value of null to specify a non-item based currency.
     *
     * @param item The Type of currency that will be used when users enter this world.
     */
-    void setCurrency(int item);
+    void setCurrency(@Nullable Material item);

    /**
-     * Gets the Type of currency that will be used when users enter this world.
+     * Gets the world players will respawn in if they die in this one.
     *
-     * @return The Type of currency that will be used when users enter this world.
+     * @return A world that exists on the server.
     */
-    int getCurrency();
+    World getRespawnToWorld();

    /**
     * Sets the world players will respawn in if they die in this one.
@@ -405,11 +515,12 @@ public interface MultiverseWorld {
    boolean setRespawnToWorld(String respawnWorld);

    /**
-     * Gets the world players will respawn in if they die in this one.
+     * Gets the scaling value of this world.Really only has an effect if you use
+     * Multiverse-NetherPortals.
     *
-     * @return A world that exists on the server.
+     * @return This world's non-negative, non-zero scale.
     */
-    World getRespawnToWorld();
+    double getScaling();

    /**
     * Sets the scale of this world. Really only has an effect if you use
@@ -421,60 +532,11 @@ public interface MultiverseWorld {
    boolean setScaling(double scaling);

    /**
-     * Gets the scaling value of this world.Really only has an effect if you use
-     * Multiverse-NetherPortals.
+     * Gets whether or not a world will auto-heal players if the difficulty is on peaceful.
     *
-     * @return This world's non-negative, non-zero scale.
+     * @return True if the world should heal (default), false if not.
     */
-    double getScaling();
-
-    /**
-     * Gets a list of all the worlds that players CANNOT travel to from this world,
-     * regardless of their access permissions.
-     *
-     * @return A List of world names.
-     */
-    List<String> getWorldBlacklist();
-
-    /**
-     * Returns a list of animals. This list always negates the {@link #canAnimalsSpawn()} result.
-     *
-     * @return A list of animals that will spawn if {@link #canAnimalsSpawn()} is false.
-     */
-    List<String> getAnimalList();
-
-    /**
-     * Sets whether or not animals can spawn.
-     * If there are values in {@link #getAnimalList()} and this is false,
-     * those animals become the exceptions, and will spawn
-     *
-     * @param allowAnimalSpawn True to allow spawning of monsters, false to prevent.
-     */
-    void setAllowAnimalSpawn(boolean allowAnimalSpawn);
-
-    /**
-     * Returns a list of monsters. This list always negates the {@link #canMonstersSpawn()} ()} result.
-     *
-     * @return A list of monsters that will spawn if {@link #canMonstersSpawn()} is false.
-     */
-    List<String> getMonsterList();
-
-    /**
-     * Sets whether or not monsters can spawn.
-     * If there are values in {@link #getMonsterList()} and this is false,
-     * those monsters become the exceptions, and will spawn
-     *
-     * @param allowMonsterSpawn True to allow spawning of monsters, false to prevent.
-     */
-    void setAllowMonsterSpawn(boolean allowMonsterSpawn);
-
-    /**
-     * Clears a list property (sets it to []).
-     *
-     * @param property The property to clear.
-     * @return True if success, false if fail.
-     */
-    boolean clearList(String property);
+    boolean getAutoHeal();

    /**
     * Sets whether or not a world will auto-heal players if the difficulty is on peaceful.
@@ -484,11 +546,11 @@ public interface MultiverseWorld {
    void setAutoHeal(boolean heal);

    /**
-     * Gets whether or not a world will auto-heal players if the difficulty is on peaceful.
+     * Gets whether or not Multiverse should auto-adjust the spawn for this world.
     *
-     * @return True if the world should heal (default), false if not.
+     * @return True if Multiverse should adjust the spawn, false if not.
     */
-    boolean getAutoHeal();
+    boolean getAdjustSpawn();

    /**
     * Sets whether or not Multiverse should auto-adjust the spawn for this world.
@@ -498,11 +560,11 @@ public interface MultiverseWorld {
    void setAdjustSpawn(boolean adjust);

    /**
-     * Gets whether or not Multiverse should auto-adjust the spawn for this world.
+     * Gets whether or not Multiverse should auto-load this world.
     *
-     * @return True if Multiverse should adjust the spawn, false if not.
+     * @return True if Multiverse should auto-load this world.
     */
-    boolean getAdjustSpawn();
+    boolean getAutoLoad();

    /**
     * Sets whether or not Multiverse should auto-load this world.
@@ -514,11 +576,12 @@ public interface MultiverseWorld {
    void setAutoLoad(boolean autoLoad);

    /**
-     * Gets whether or not Multiverse should auto-load this world.
+     * Gets whether or not a player who dies in this world will respawn in their
+     * bed or follow the normal respawn pattern.
     *
-     * @return True if Multiverse should auto-load this world.
+     * @return True if players dying in this world should respawn at their bed.
     */
-    boolean getAutoLoad();
+    boolean getBedRespawn();

    /**
     * Sets whether or not a player who dies in this world will respawn in their
@@ -531,19 +594,26 @@ public interface MultiverseWorld {
    void setBedRespawn(boolean autoLoad);

    /**
-     * Gets whether or not a player who dies in this world will respawn in their
-     * bed or follow the normal respawn pattern.
+     * Sets the player limit for this world after which players without an override
+     * permission node will not be allowed in. A value of -1 or less signifies no limit
     *
-     * @return True if players dying in this world should respawn at their bed.
+     * @param limit The new limit
     */
-    boolean getBedRespawn();
+    void setPlayerLimit(int limit);

    /**
-     * Gets all the names of all properties that can be SET.
+     * Gets the player limit for this world after which players without an override
+     * permission node will not be allowed in. A value of -1 or less signifies no limit
     *
-     * @return All property names, with alternating colors.
+     * @return The player limit
     */
-    String getAllPropertyNames();
+    int getPlayerLimit();
+
+    /**
+     * Same as {@link #getTime()}, but returns a string.
+     * @return The time as a short string: 12:34pm
+     */
+    String getTime();

    /**
     * Sets the current time in a world.
@@ -559,18 +629,53 @@ public interface MultiverseWorld {
    boolean setTime(String timeAsString);

    /**
-     * Same as {@link #getTime()}, but returns a string.
-     * @return The time as a short string: 12:34pm
+     * Sets The types of portals that are allowed in this world.
+     *
+     * @param type The type of portals allowed in this world.
     */
-    String getTime();
+    void allowPortalMaking(AllowedPortalType type);

    /**
-     * Gets the type of this world. As of 1.1-R1 this will be:
-     * FLAT or NORMAL
-     * <p>
-     * This is *not* the generator.
+     * Gets which type(s) of portals are allowed to be constructed in this world.
     *
-     * @return The Type of this world.
+     * @return The type of portals that are allowed.
     */
-    WorldType getWorldType();
+    AllowedPortalType getAllowedPortals();
+
+    // properties that are not "getter+setter" style
+    /**
+     * Gets a list of all the worlds that players CANNOT travel to from this world,
+     * regardless of their access permissions.
+     *
+     * @return A List of world names.
+     */
+    List<String> getWorldBlacklist();
+
+    /**
+     * Gets all the names of all properties that can be SET.
+     *
+     * @return All property names in list.
+     */
+    Collection<String> getAllPropertyTypes();
+
+    /**
+     * Gets all the names of all properties that can be SET.
+     *
+     * @return All property names, with alternating colors.
+     */
+    String getAllPropertyNames();
+
+    /**
+     * Whether or not players are allowed to fly in this world.
+     *
+     * @return True if players allowed to fly in this world.
+     */
+    boolean getAllowFlight();
+
+    /**
+     * Sets whether or not players are allowed to fly in this world.
+     *
+     * @param allowFlight True to allow flight in this world.
+     */
+    void setAllowFlight(final boolean allowFlight);
 }
@@ -0,0 +1,13 @@
+package com.onarandombox.MultiverseCore.api;
+
+import org.bukkit.command.CommandSender;
+
+import java.util.List;
+
+public interface PermissionsInterface {
+    public boolean hasPermission(CommandSender sender, String node, boolean isOpRequired);
+
+    public boolean hasAnyPermission(CommandSender sender, List<String> allPermissionStrings, boolean opRequired);
+
+    public boolean hasAllPermission(CommandSender sender, List<String> allPermissionStrings, boolean opRequired);
+}
@@ -0,0 +1,71 @@
+package com.onarandombox.MultiverseCore.api;
+
+import org.bukkit.Location;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Entity;
+
+import com.onarandombox.MultiverseCore.enums.TeleportResult;
+
+/**
+ * Used to safely teleport people.
+ */
+public interface SafeTTeleporter extends Teleporter {
+
+    /**
+     * Gets the next safe location around the given location.
+     * @param l A {@link Location}.
+     * @return A safe {@link Location}.
+     */
+    Location getSafeLocation(Location l);
+
+    /**
+     * Gets the next safe location around the given location.
+     * @param l A {@link Location}.
+     * @param tolerance The tolerance.
+     * @param radius The radius.
+     * @return A safe {@link Location}.
+     */
+    Location getSafeLocation(Location l, int tolerance, int radius);
+
+    /**
+     * Safely teleport the entity to the MVDestination. This will perform checks to see if the place is safe, and if
+     * it's not, will adjust the final destination accordingly.
+     *
+     * @param teleporter Person who performed the teleport command.
+     * @param teleportee Entity to teleport
+     * @param d          Destination to teleport them to
+     * @return true for success, false for failure
+     */
+    TeleportResult safelyTeleport(CommandSender teleporter, Entity teleportee, MVDestination d);
+
+    /**
+     * Safely teleport the entity to the Location. This may perform checks to
+     * see if the place is safe, and if
+     * it's not, will adjust the final destination accordingly.
+     *
+     * @param teleporter Person who issued the teleport command.
+     * @param teleportee Entity to teleport.
+     * @param location   Location to teleport them to.
+     * @param safely     Should the destination be checked for safety before teleport?
+     * @return true for success, false for failure.
+     */
+    TeleportResult safelyTeleport(CommandSender teleporter, Entity teleportee, Location location,
+            boolean safely);
+
+    /**
+     * Returns a safe location for the entity to spawn at.
+     *
+     * @param e The entity to spawn
+     * @param d The MVDestination to take the entity to.
+     * @return A new location to spawn the entity at.
+     */
+    Location getSafeLocation(Entity e, MVDestination d);
+
+    /**
+     * Finds a portal-block next to the specified {@link Location}.
+     * @param l The {@link Location}
+     * @return The next portal-block's {@link Location}.
+     */
+    Location findPortalBlockNextTo(Location l);
+
+}
@@ -0,0 +1,10 @@
+package com.onarandombox.MultiverseCore.api;
+
+import com.onarandombox.MultiverseCore.api.MVDestination;
+import com.onarandombox.MultiverseCore.enums.TeleportResult;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public interface Teleporter {
+    TeleportResult teleport(CommandSender teleporter, Player teleportee, MVDestination destination);
+}
@@ -0,0 +1,68 @@
+package com.onarandombox.MultiverseCore.api;
+
+import java.util.List;
+
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Entity;
+
+/**
+ * Used to remove animals from worlds that don't belong there.
+ */
+public interface WorldPurger {
+    /**
+     * Synchronizes the given worlds with their settings.
+     *
+     * @param worlds A list of {@link MultiverseWorld}
+     */
+    void purgeWorlds(List<MultiverseWorld> worlds);
+
+    /**
+     * Convenience method for {@link #purgeWorld(MultiverseWorld, java.util.List, boolean, boolean)} that takes the settings from the world-config.
+     *
+     * @param world The {@link MultiverseWorld}.
+     */
+    void purgeWorld(MultiverseWorld world);
+
+    /**
+     * Clear all animals/monsters that do not belong to a world according to the config.
+     *
+     * @param mvworld The {@link MultiverseWorld}.
+     * @param thingsToKill A {@link List} of animals/monsters to be killed.
+     * @param negateAnimals Whether the monsters in the list should be negated.
+     * @param negateMonsters Whether the animals in the list should be negated.
+     */
+    void purgeWorld(MultiverseWorld mvworld, List<String> thingsToKill, boolean negateAnimals,
+            boolean negateMonsters);
+
+    /**
+     * Clear all animals/monsters that do not belong to a world according to the config.
+     *
+     * @param mvworld The {@link MultiverseWorld}.
+     * @param thingsToKill A {@link List} of animals/monsters to be killed.
+     * @param negateAnimals Whether the monsters in the list should be negated.
+     * @param negateMonsters Whether the animals in the list should be negated.
+     * @param sender The {@link CommandSender} that initiated the action. He will/should be notified.
+     */
+    void purgeWorld(MultiverseWorld mvworld, List<String> thingsToKill, boolean negateAnimals,
+            boolean negateMonsters, CommandSender sender);
+
+    /**
+     * Determines whether the specified creature should be killed.
+     *
+     * @param e The creature.
+     * @param thingsToKill A {@link List} of animals/monsters to be killed.
+     * @param negateAnimals Whether the monsters in the list should be negated.
+     * @param negateMonsters Whether the animals in the list should be negated.
+     * @return {@code true} if the creature should be killed, otherwise {@code false}.
+     */
+    boolean shouldWeKillThisCreature(Entity e, List<String> thingsToKill, boolean negateAnimals, boolean negateMonsters);
+
+    /**
+     * Determines whether the specified creature should be killed and automatically reads the params from a world object.
+     *
+     * @param w The world.
+     * @param e The creature.
+     * @return {@code true} if the creature should be killed, otherwise {@code false}.
+     */
+    boolean shouldWeKillThisCreature(MultiverseWorld w, Entity e);
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,132 +7,127 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.context.PageFilter;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
+import com.onarandombox.MultiverseCore.displaytools.DisplaySettings;
+import com.onarandombox.MultiverseCore.utils.AnchorManager;
 import org.bukkit.ChatColor;
+import org.bukkit.Location;
+import org.bukkit.World;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
+import java.util.Set;

-/**
- * Allows management of Anchor Destinations.
- */
-public class AnchorCommand extends PaginatedCoreCommand<String> {
+@CommandAlias("mv")
+@Subcommand("anchors")
+public class AnchorCommand extends MultiverseCoreCommand {
+
+    private final AnchorManager anchorManager;

    public AnchorCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Create, Delete and Manage Anchor Destinations.");
-        this.setCommandUsage("/mv anchor " + ChatColor.GREEN + "{name}" + ChatColor.GOLD + " [-d]");
-        this.setArgRange(0, 2);
-        this.addKey("mv anchor");
-        this.addKey("mv anchors");
-        this.addKey("mvanchor");
-        this.addKey("mvanchors");
-        this.addCommandExample("/mv anchor " + ChatColor.GREEN + "awesomething");
-        this.addCommandExample("/mv anchor " + ChatColor.GREEN + "otherthing");
-        this.addCommandExample("/mv anchor " + ChatColor.GREEN + "awesomething " + ChatColor.RED + "-d");
-        this.addCommandExample("/mv anchors ");
-        this.setPermission("multiverse.core.anchor", "Allows management of Anchor Destinations.", PermissionDefault.OP);
-        this.setItemsPerPage(8); // SUPPRESS CHECKSTYLE: MagicNumberCheck
+        this.anchorManager = plugin.getAnchorManager();
    }

-    private List<String> getFancyAnchorList(Player p) {
-        List<String> anchorList = new ArrayList<String>();
-        ChatColor color = ChatColor.GREEN;
-        for (String anchor : this.plugin.getAnchorManager().getAnchors(p)) {
-            anchorList.add(color + anchor);
-            color = (color == ChatColor.GREEN) ? ChatColor.GOLD : ChatColor.GREEN;
-        }
-        return anchorList;
-    }
+    @Subcommand("create")
+    @CommandPermission("multiverse.core.anchor.create")
+    @Syntax("<name>")
+    @Description("Create a new anchor point.")
+    public void onCreateAnchorCommand(@NotNull Player player,

-    private void showList(CommandSender sender, List<String> args) {
-        sender.sendMessage(ChatColor.LIGHT_PURPLE + "====[ Multiverse Anchor List ]====");
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
+                                      @NotNull
+                                      @Syntax("<name>")
+                                      @Description("Name of your new anchor.")
+                                      @Flags("type=anchor name")
+                                      @Single String anchorName) {

+        player.sendMessage((this.plugin.getAnchorManager().saveAnchorLocation(anchorName, player.getLocation()))

-        FilterObject filterObject = this.getPageAndFilter(args);
+                ? String.format("Anchor '%s%s%s' was successfully %s created!",
+                ChatColor.AQUA, anchorName, ChatColor.WHITE, ChatColor.GREEN)

-        List<String> availableAnchors = new ArrayList<String>(this.getFancyAnchorList(p));
-        if (filterObject.getFilter().length() > 0) {
-            availableAnchors = this.getFilteredItems(availableAnchors, filterObject.getFilter());
-            if (availableAnchors.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE
-                        + "No anchors matched your filter: " + ChatColor.AQUA + filterObject.getFilter());
-                return;
-            }
-        } else {
-            if (availableAnchors.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE + "No anchors were defined.");
-                return;
-            }
-        }
-
-
-        if (!(sender instanceof Player)) {
-            for (String c : availableAnchors) {
-                sender.sendMessage(c);
-            }
-            return;
-        }
-
-        int totalPages = (int) Math.ceil(availableAnchors.size() / (this.itemsPerPage + 0.0));
-
-        if (filterObject.getPage() > totalPages) {
-            filterObject.setPage(totalPages);
-        }
-
-        sender.sendMessage(ChatColor.AQUA + " Page " + filterObject.getPage() + " of " + totalPages);
-
-        this.showPage(filterObject.getPage(), sender, availableAnchors);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() == 0) {
-            this.showList(sender, args);
-            return;
-        }
-        if (args.size() == 2) {
-            if (this.plugin.getAnchorManager().deleteAnchor(args.get(0))) {
-                sender.sendMessage("Anchor '" + args.get(0) + "' was successfully " + ChatColor.RED + "deleted!");
-            } else {
-                sender.sendMessage("Anchor '" + args.get(0) + "' was " + ChatColor.RED + " NOT " + ChatColor.WHITE + "deleted!");
-            }
-            return;
-        }
-
-        if (!(sender instanceof Player)) {
-            sender.sendMessage("You must be a player to create Anchors.");
-            return;
-        }
-        Player player = (Player) sender;
-        if (this.plugin.getAnchorManager().saveAnchorLocation(args.get(0), player.getLocation())) {
-            sender.sendMessage("Anchor '" + args.get(0) + "' was successfully " + ChatColor.GREEN + "created!");
-        } else {
-            sender.sendMessage("Anchor '" + args.get(0) + "' was " + ChatColor.RED + " NOT " + ChatColor.WHITE + "created!");
-        }
+                : String.format("%sThere was an error creating anchor '%s'! Check console for errors.",
+                ChatColor.RED, anchorName));

    }

-    @Override
-    protected List<String> getFilteredItems(List<String> availableItems, String filter) {
-        List<String> filtered = new ArrayList<String>();
-        for (String s : availableItems) {
-            if (s.matches("(?i).*" + filter + ".*")) {
-                filtered.add(s);
-            }
-        }
-        return filtered;
+    @Subcommand("delete")
+    @CommandPermission("multiverse.core.anchor.delete")
+    @Syntax("<anchor>")
+    @CommandCompletion("@anchors")
+    @Description("Delete an existing anchor point.")
+    public void onDeleteAnchorCommand(@NotNull CommandSender sender,
+
+                                      @NotNull
+                                      @Syntax("<name>")
+                                      @Description("Name of anchor you want to delete.")
+                                      @Flags("type=anchor name")
+                                      @Single String anchorName) {
+
+        sender.sendMessage((this.plugin.getAnchorManager().deleteAnchor(anchorName))
+
+                ? String.format("Anchor '%s%s%s' was successfully %s deleted!",
+                ChatColor.AQUA, anchorName, ChatColor.WHITE, ChatColor.RED)
+
+                : String.format("%sThere was an error deleting anchor '%s'! Check console for errors.",
+                ChatColor.RED, anchorName));
    }

-    @Override
-    protected String getItemText(String item) {
-        return item;
+    @Subcommand("list")
+    @CommandPermission("multiverse.core.anchor.list")
+    @Syntax("[filter] [page]")
+    @Description("View a list of current anchors.")
+    public void onListAnchorCommand(@NotNull CommandSender sender,
+                                    @NotNull PageFilter pageFilter) {
+
+        new ContentDisplay.Builder<Collection<String>>()
+                .sender(sender)
+                .header("%s====[ Multiverse Anchor List ]====", ChatColor.LIGHT_PURPLE)
+                .contents(buildAnchorList(sender))
+                .emptyMessage("You do not any anchors set. See /mv anchors create to get started!")
+                .displayHandler(DisplayHandlers.PAGE_LIST)
+                .colorTool(ColorAlternator.with(ChatColor.YELLOW, ChatColor.DARK_AQUA))
+                .setting(DisplaySettings.SHOW_PAGE, pageFilter.getPage())
+                .display();
+    }
+
+    private List<String> buildAnchorList(@NotNull CommandSender sender) {
+        Set<String> anchors = (sender instanceof Player)
+                ? this.anchorManager.getAnchors((Player) sender)
+                : this.anchorManager.getAllAnchors();
+
+        List<String> anchorContent = new ArrayList<>();
+        for (String anchor : anchors) {
+            Location anchorLocation = this.anchorManager.getAnchorLocation(anchor);
+            World world = anchorLocation.getWorld(); // this.plugin.getMVWorldManager().getMVWorld();
+
+            String locationString = ChatColor.RED + "!!INVALID!!";
+            if (world != null) {
+                MultiverseWorld mvWorld = this.plugin.getMVWorldManager().getMVWorld(world);
+                locationString = (mvWorld == null)
+                        ? String.format("%s%s !!NOT MULTIVERSE WORLD!!", ChatColor.RED, world.getName())
+                        : String.format("%s - %s", mvWorld.getColoredWorldString(), this.plugin.getLocationManipulation().strAxis(anchorLocation));
+            }
+            anchorContent.add(String.format("%s: %s", anchor, locationString));
+        }
+
+        return anchorContent;
    }
 }
@@ -0,0 +1,64 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.context.RequiredPlayer;
+import org.bukkit.ChatColor;
+import org.bukkit.Location;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+@CommandAlias("mv")
+public class BedCommand extends MultiverseCoreCommand {
+
+    public BedCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @Subcommand("bed")
+    @CommandPermission("multiverse.core.bed.self")
+    @Description("Takes your current respawn point.")
+    public void onBedCommand(@NotNull Player player) {
+        doBedRespawn(player, player);
+    }
+
+    @Subcommand("bed")
+    @CommandPermission("multiverse.core.bed.other")
+    @Syntax("[player]")
+    @CommandCompletion("@players")
+    @Description("Takes another player to their respawn location.")
+    public void onOtherBedCommand(@NotNull CommandSender sender,
+
+                                  @Syntax("[player]")
+                                  @Description("Target player to teleport to respawn location.")
+                                  @NotNull RequiredPlayer player) {
+
+        doBedRespawn(sender, player.get());
+    }
+
+    private void doBedRespawn(@NotNull CommandSender sender,
+                              @NotNull Player player) {
+
+        Location bedLocation = player.getBedSpawnLocation();
+        if (bedLocation == null) {
+            sender.sendMessage(String.format("%sYou do not have a respawn point set!", ChatColor.RED));
+            return;
+        }
+        sender.sendMessage((player.teleport(bedLocation))
+                ? "You have been teleported to your respawn point!"
+                : String.format("%sThere was an error teleporting you to your respawn point.", ChatColor.RED));
+    }
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,56 +7,42 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import com.onarandombox.MultiverseCore.api.MVDestination;
-import com.onarandombox.MultiverseCore.destination.InvalidDestination;
-import com.onarandombox.MultiverseCore.utils.MVPermissions;
-import org.bukkit.ChatColor;
+import com.onarandombox.MultiverseCore.commandtools.context.RequiredPlayer;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-/**
- * Checks to see if a player can go to a destination.
- */
-public class CheckCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class CheckCommand extends MultiverseCoreCommand {

    public CheckCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Help you validate your multiverse settings");
-        this.setCommandUsage("/mv check " + ChatColor.GREEN + "{PLAYER} {DESTINATION}");
-        this.setArgRange(2, 2);
-        this.addKey("mv check");
-        this.addKey("mvcheck");
-        this.addCommandExample("/mv check " + ChatColor.GREEN + "fernferret " + ChatColor.LIGHT_PURPLE + "w:MyWorld");
-        this.addCommandExample("/mv check " + ChatColor.GREEN + "Rigby90 " + ChatColor.LIGHT_PURPLE + "p:MyPortal");
-        this.addCommandExample("/mv check " + ChatColor.GREEN + "lithium3141 " + ChatColor.LIGHT_PURPLE + "ow:WarpName");
-        this.setPermission("multiverse.core.debug", "Checks to see if a player can go to a destination. Prints debug if false.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player p = this.plugin.getServer().getPlayer(args.get(0));
-        if (p == null) {
-            sender.sendMessage("Could not find player " + ChatColor.GREEN + args.get(0));
-            sender.sendMessage("Are they online?");
-            return;
-        }
-        MVDestination dest = this.plugin.getDestFactory().getDestination(args.get(1));
-        if (dest instanceof InvalidDestination) {
-            sender.sendMessage("You asked if '" + args.get(0) + "' could go to " + ChatColor.GREEN + args.get(0) + ChatColor.WHITE + ",");
-            sender.sendMessage("but I couldn't find a Destination of that name? Did you type it correctly?");
-            return;
-        }
+    @Subcommand("check")
+    @CommandPermission("multiverse.core.debug")
+    @Syntax("<player> <destination>")
+    @CommandCompletion("@players @destinations|@MVWorlds")
+    @Description("Checks to see if a player can go to a destination. Prints debug if false.")
+    public void onCheckCommand(@NotNull CommandSender sender,

-        MVPermissions perms = this.plugin.getMVPerms();
-        if (perms.canEnterDestination(p, dest)) {
-            sender.sendMessage(ChatColor.GREEN + args.get(0) + ChatColor.WHITE + " can travel to " + ChatColor.GREEN + args.get(1));
-        } else {
-            sender.sendMessage(ChatColor.AQUA + args.get(0) + ChatColor.RED + " CANNOT travel to " + ChatColor.AQUA + args.get(1));
-            sender.sendMessage("Please turn debug mode to 3 then watch the console to find out why!");
-            sender.sendMessage("Use: " + ChatColor.GREEN + "/mv debug 3");
-        }
+                               @NotNull
+                               @Syntax("<player>")
+                               @Description("Player to check destination on.")
+                               RequiredPlayer player,
+
+                               @NotNull
+                               @Syntax("<destination>")
+                               @Description("A destination location, e.g. a world name.")
+                               MVDestination destination) {
+
+        this.plugin.getMVPerms().tellMeWhyICantDoThis(sender, player.get(), destination);
    }
 }
@@ -0,0 +1,52 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+@CommandAlias("mv")
+public class CloneCommand extends MultiverseCoreCommand {
+
+    public CloneCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @Subcommand("clone")
+    @CommandPermission("multiverse.core.clone")
+    @Syntax("<world> <name>")
+    @CommandCompletion("@MVWorlds|@unloadedWorlds @empty")
+    @Description("Clones a world.")
+    public void onCloneCommand(@NotNull CommandSender sender,
+
+                               @NotNull
+                               @Syntax("<world>")
+                               @Description("Current multiverse world.")
+                               @Conditions("isWorldInConfig") String worldName,
+
+                               @NotNull
+                               @Syntax("<name>")
+                               @Description("New cloned world name.")
+                               @Single @Flags("trim") @Conditions("creatableWorldName") String newWorldName) {
+
+        sender.sendMessage((this.plugin.getMVWorldManager().cloneWorld(worldName, newWorldName))
+                ? String.format("%sWorld cloned!", ChatColor.GREEN)
+                : String.format("%sWorld could not be cloned! See console for more details.", ChatColor.RED));
+    }
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,91 +7,88 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import co.aikar.commands.annotation.Values;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.enums.ConfigProperty;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.ContentFilter;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
+import java.util.Map;
+
+@CommandAlias("mv")
+@Subcommand("config")
+@CommandPermission("multiverse.core.config")
+public class ConfigCommand extends MultiverseCoreCommand {

-/**
- * Allows you to set Global MV Variables.
- */
-public class ConfigCommand extends MultiverseCommand {
    public ConfigCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Configuration");
-        this.setCommandUsage("/mv config " + ChatColor.GREEN + "{PROPERTY} {VALUE}");
-        this.setArgRange(1, 2);
-        this.addKey("mv config");
-        this.addKey("mvconfig");
-        this.addKey("mv conf");
-        this.addKey("mvconf");
-        this.addCommandExample("All values: " + ConfigProperty.getAllValues());
-        this.addCommandExample("/mv config show");
-        this.addCommandExample("/mv config " + ChatColor.GREEN + "debug" + ChatColor.AQUA + " 3");
-        this.addCommandExample("/mv config " + ChatColor.GREEN + "enforceaccess" + ChatColor.AQUA + " false");
-        this.setPermission("multiverse.core.config", "Allows you to set Global MV Variables.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() <= 1) {
-            String[] allProps = ConfigProperty.getAllValues().split(" ");
-            String currentvals = "";
-            for (String prop : allProps) {
-                currentvals += ChatColor.GREEN;
-                currentvals += prop;
-                currentvals += ChatColor.WHITE;
-                currentvals += " = ";
-                currentvals += ChatColor.GOLD;
-                currentvals += this.plugin.getMVConfiguration().get(prop, "NOT SET");
-                currentvals += ChatColor.WHITE;
-                currentvals += ", ";
-            }
-            sender.sendMessage(currentvals.substring(0, currentvals.length() - 2));
+    @Subcommand("list")
+    @Syntax("[filter]")
+    @Description("Show multiverse config values.")
+    public void onShowCommand(@NotNull CommandSender sender,
+                              @NotNull ContentFilter filter) {
+
+        new ContentDisplay.Builder<Map<String, Object>>()
+                .sender(sender)
+                .header("%s===[ Multiverse Config ]===", ChatColor.LIGHT_PURPLE)
+                .contents(this.plugin.getMVConfig().serialize())
+                .emptyMessage("No config values found.")
+                .displayHandler(DisplayHandlers.INLINE_MAP)
+                .colorTool(ColorAlternator.with(ChatColor.GREEN, ChatColor.GOLD))
+                .filter(filter)
+                .display();
+    }
+
+    @Subcommand("set")
+    @Syntax("<property> <value>")
+    @CommandCompletion("@MVConfigs")
+    @Description("Set Global MV Variables.")
+    public void onSetCommand(@NotNull CommandSender sender,
+
+                             @NotNull
+                             @Syntax("<property>")
+                             @Description("Config option.")
+                             @Values("@MVConfigs") String property,
+
+                             @NotNull
+                             @Syntax("<value>")
+                             @Description("New value for the given config option.")
+                             @Single String value) {
+
+        property = property.toLowerCase();
+
+        if (!this.plugin.getMVConfig().setConfigProperty(property, value)) {
+            sender.sendMessage(String.format("%sSetting '%s' to '%s' failed!", ChatColor.RED, property, value));
            return;
        }
-        if (args.get(0).equalsIgnoreCase("firstspawnworld")) {
-            this.plugin.getMVConfiguration().set(args.get(0).toLowerCase(), args.get(1));
-            // Don't forget to set the world!
-            this.plugin.getMVWorldManager().setFirstSpawnWorld(args.get(1));
-        } else if (args.get(0).equalsIgnoreCase("messagecooldown") || args.get(0).equalsIgnoreCase("teleportcooldown")
-                || args.get(0).equalsIgnoreCase("debug")) {
-            try {
-                this.plugin.getMVConfiguration().set(args.get(0).toLowerCase(), Integer.parseInt(args.get(1)));
-            } catch (NumberFormatException e) {
-                sender.sendMessage(ChatColor.RED + "Sorry, " + ChatColor.AQUA + args.get(0) + ChatColor.WHITE + " must be an integer!");
-                return;
-            }
-        } else {
-            ConfigProperty property = null;
-            try {
-                property = ConfigProperty.valueOf(args.get(0).toLowerCase());
-            } catch (IllegalArgumentException e) {
-                sender.sendMessage(ChatColor.RED + "Sorry, " + ChatColor.AQUA
-                        + args.get(0) + ChatColor.WHITE + " you can't set " + ChatColor.AQUA + args.get(0));
-                sender.sendMessage(ChatColor.GREEN + "Valid values are:");
-                sender.sendMessage(ConfigProperty.getAllValues());
-                return;
-            }

-            if (property != null) {
-                try {
-                    this.plugin.getMVConfiguration().set(args.get(0).toLowerCase(), Boolean.parseBoolean(args.get(1)));
-                } catch (Exception e) {
-                    sender.sendMessage(ChatColor.RED + "Sorry, " + ChatColor.AQUA + args.get(0) + ChatColor.WHITE + " must be true or false!");
-                    return;
-                }
+        if (!this.plugin.saveMVConfigs()) {
+            sender.sendMessage(String.format("%sFailed to save config! Check your console for details.", ChatColor.RED));
+            return;
+        }

-            }
-        }
-        if (this.plugin.saveMVConfigs()) {
-            sender.sendMessage(ChatColor.GREEN + "SUCCESS!" + ChatColor.WHITE + " Values were updated successfully!");
-            this.plugin.loadConfigs();
-        } else {
-            sender.sendMessage(ChatColor.RED + "FAIL!" + ChatColor.WHITE + " Check your console for details!");
+        // special rule, don't forget to set the world!
+        //TODO API: Potentially should move to MultiverseCore#loadConfigs method
+        if (property.equalsIgnoreCase("firstspawnworld")) {
+            this.plugin.getMVWorldManager().setFirstSpawnWorld(value);
        }
+
+        sender.sendMessage(String.format("%sSuccess! %sConfig option %s%s %sis now set to %s%s%s.",
+                ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, property, ChatColor.WHITE, ChatColor.GREEN, value, ChatColor.WHITE));
+
+        this.plugin.loadConfigs();
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,33 +7,25 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-
-/**
- * Confirms actions.
- */
-public class ConfirmCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class ConfirmCommand extends MultiverseCoreCommand {

    public ConfirmCommand(MultiverseCore plugin) {
        super(plugin);
-        // Any command that is dangerous should require op
-        this.setName("Confirms a command that could destroy life, the universe and everything.");
-        this.setCommandUsage("/mv confirm");
-        this.setArgRange(0, 0);
-        this.addKey("mvconfirm");
-        this.addKey("mv confirm");
-        this.addCommandExample("/mv confirm");
-        this.setPermission("multiverse.core.confirm", "If you have not been prompted to use this, it will not do anything.", PermissionDefault.OP);
-
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        this.plugin.getCommandHandler().confirmQueuedCommand(sender);
+    @Subcommand("confirm")
+    @CommandPermission("multiverse.core.confirm")
+    @Description("Confirms dangerous commands before executing them.")
+    public void onConfirmCommand(@NotNull CommandSender sender) {
+        this.plugin.getMVCommandManager().getQueueManager().runQueuedCommand(sender);
    }
-
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,65 +7,69 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.utils.LocationManipulation;
+import com.onarandombox.MultiverseCore.commandtools.context.RequiredPlayer;
 import org.bukkit.ChatColor;
-import org.bukkit.Material;
-import org.bukkit.World;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.text.DecimalFormat;
-import java.util.List;
-
-/**
- * Returns detailed information on the Players where abouts.
- */
-public class CoordCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
+@CommandAlias("mv")
+public class CoordCommand extends MultiverseCoreCommand {

    public CoordCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Coordinates");
-        this.setCommandUsage("/mv coord");
-        this.setArgRange(0, 0);
-        this.addKey("mv coord");
-        this.addKey("mvcoord");
-        this.addKey("mvco");
-        this.addCommandExample("/mv coord");
-        this.setPermission("multiverse.core.coord", "Returns detailed information on the Players where abouts.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Check if the command was sent from a Player.
-        if (sender instanceof Player) {
-            Player p = (Player) sender;
-            World world = p.getWorld();
+    @Subcommand("coord|coordinate")
+    @CommandPermission("multiverse.core.coord.self")
+    @Description("Detailed information on your own where abouts.")
+    public void onCoordCommand(@NotNull Player player) {
+        showCoordInfo(player, player);
+    }

-            if (!this.worldManager.isMVWorld(world.getName())) {
-                this.plugin.showNotMVWorldMessage(sender, world.getName());
-                return;
-            }
+    @Subcommand("coord|coordinate")
+    @CommandPermission("multiverse.core.coord.other")
+    @Syntax("[player]")
+    @CommandCompletion("@players")
+    @Description("Detailed information on the player's where abouts.")
+    public void onOtherCoordCommand(@NotNull CommandSender sender,

-            MultiverseWorld mvworld = this.worldManager.getMVWorld(world.getName());
+                                    @NotNull
+                                    @Syntax("[player]")
+                                    @Description("Player you want coordinate info of.")
+                                    RequiredPlayer player) {

-            p.sendMessage(ChatColor.AQUA + "--- Location Information ---");
-            p.sendMessage(ChatColor.AQUA + "World: " + ChatColor.WHITE + world.getName());
-            p.sendMessage(ChatColor.AQUA + "Alias: " + mvworld.getColoredWorldString());
-            p.sendMessage(ChatColor.AQUA + "World Scale: " + ChatColor.WHITE + mvworld.getScaling());
-            DecimalFormat df = new DecimalFormat();
-            df.setMinimumFractionDigits(0);
-            df.setMaximumFractionDigits(2);
-            p.sendMessage(ChatColor.AQUA + "Coordinates: " + ChatColor.WHITE + LocationManipulation.strCoords(p.getLocation()));
-            p.sendMessage(ChatColor.AQUA + "Direction: " + ChatColor.WHITE + LocationManipulation.getDirection(p.getLocation()));
-            p.sendMessage(ChatColor.AQUA + "Block: " + ChatColor.WHITE + Material.getMaterial(world.getBlockTypeIdAt(p.getLocation())));
-        } else {
-            sender.sendMessage("This command needs to be used from a Player.");
+        showCoordInfo(sender, player.get());
+    }
+
+    private void showCoordInfo(@NotNull CommandSender sender,
+                               @NotNull Player player) {
+
+        MultiverseWorld world = this.plugin.getMVWorldManager().getMVWorld(player.getWorld());
+        if (world == null) {
+            throw new InvalidCommandArgument("Player is not in a multiverse world.");
        }
+
+        String name = player.equals(sender)
+                ? ""
+                : String.format("for %s%s%s",ChatColor.YELLOW, player.getName(), ChatColor.AQUA);
+
+        sender.sendMessage(String.format("%s--- Location Information %s---", ChatColor.AQUA, name));
+        sender.sendMessage(String.format("%sWorld: %s%s", ChatColor.AQUA, ChatColor.WHITE,  world.getName()));
+        sender.sendMessage(String.format("%sAlias: %s%s", ChatColor.AQUA, ChatColor.WHITE,  world.getColoredWorldString()));
+        sender.sendMessage(String.format("%sWorld Scale: %s%s", ChatColor.AQUA, ChatColor.WHITE, world.getScaling()));
+        sender.sendMessage(String.format("%sCoordinates: %s%s", ChatColor.AQUA, ChatColor.WHITE, this.plugin.getLocationManipulation().strCoords(player.getLocation())));
+        sender.sendMessage(String.format("%sWorld Scale: %s%s", ChatColor.AQUA, ChatColor.WHITE, world.getScaling()));
+        sender.sendMessage(String.format("%sDirection: %s%s", ChatColor.AQUA, ChatColor.WHITE, this.plugin.getLocationManipulation().getDirection(player.getLocation())));
+        sender.sendMessage(String.format("%sBlock: %s%s", ChatColor.AQUA, ChatColor.WHITE, world.getCBWorld().getBlockAt(player.getLocation()).getType()));
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,87 +7,77 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.pneumaticraft.commandhandler.CommandHandler;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagResult;
+import com.onarandombox.MultiverseCore.commandtools.flag.CoreFlags;
 import org.bukkit.ChatColor;
-import org.bukkit.World.Environment;
-import org.bukkit.WorldType;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;

-import java.io.File;
-import java.util.List;
+import static org.bukkit.World.*;

-/**
- * Creates a new world and loads it.
- */
-public class CreateCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
+@CommandAlias("mv")
+public class CreateCommand extends MultiverseCoreCommand {

    public CreateCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Create World");
-        this.setCommandUsage("/mv create" + ChatColor.GREEN + " {NAME} {ENV}" + ChatColor.GOLD + " -s [SEED] -g [GENERATOR[:ID]] -t [WORLDTYPE] [-n]");
-        this.setArgRange(2, 9); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-        this.addKey("mvcreate");
-        this.addKey("mvc");
-        this.addKey("mv create");
-        this.setPermission("multiverse.core.create", "Creates a new world and loads it.", PermissionDefault.OP);
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "world" + ChatColor.GREEN + " normal");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "lavaland" + ChatColor.RED + " nether");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "starwars" + ChatColor.AQUA + " end");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "flatroom" + ChatColor.GREEN + " normal" + ChatColor.AQUA + " -t flat");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "gargamel" + ChatColor.GREEN + " normal" + ChatColor.DARK_AQUA + " -s gargamel");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "moonworld" + ChatColor.GREEN + " normal" + ChatColor.DARK_AQUA + " -g BukkitFullOfMoon");
-        this.worldManager = this.plugin.getMVWorldManager();
+        this.setFlagGroup(FlagGroup.of(
+                CoreFlags.WORLD_TYPE,
+                CoreFlags.SEED,
+                CoreFlags.GENERATOR,
+                CoreFlags.GENERATE_STRUCTURES,
+                CoreFlags.SPAWN_ADJUST
+        ));
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String worldName = args.get(0);
-        File worldFile = new File(this.plugin.getServer().getWorldContainer(), worldName);
-        String env = args.get(1);
-        String seed = CommandHandler.getFlag("-s", args);
-        String generator = CommandHandler.getFlag("-g", args);
-        String typeString = CommandHandler.getFlag("-t", args);
-        boolean useSpawnAdjust = true;
-        for (String s : args) {
-            if (s.equalsIgnoreCase("-n")) {
-                useSpawnAdjust = false;
-            }
-        }
-        if (worldFile.exists() || this.worldManager.isMVWorld(worldName)) {
-            sender.sendMessage(ChatColor.RED + "A Folder/World already exists with this name!");
-            sender.sendMessage(ChatColor.RED + "If you are confident it is a world you can import with /mvimport");
-            return;
-        }
+    @Subcommand("create")
+    @CommandPermission("multiverse.core.create")
+    @Syntax("<name> <env> -s [seed] -g [generator[:id]] -t [worldtype] [-n] -a [true|false]")
+    @CommandCompletion("@empty @environments @flags")
+    @Description("Creates a new world and loads it.")
+    public void onCreateCommand(@NotNull CommandSender sender,

-        Environment environment = EnvironmentCommand.getEnvFromString(env);
-        if (environment == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid environment.");
-            EnvironmentCommand.showEnvironments(sender);
-            return;
-        }
+                                @NotNull
+                                @Syntax("<name>")
+                                @Description("New world name.")
+                                @Flags("trim")
+                                @Conditions("creatableWorldName") String worldName,

-        // If they didn't specify a type, default to NORMAL
-        if (typeString == null) {
-            typeString = "NORMAL";
-        }
-        WorldType type = EnvironmentCommand.getWorldTypeFromString(typeString);
-        if (type == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid World Type.");
-            EnvironmentCommand.showWorldTypes(sender);
-            return;
-        }
+                                @NotNull
+                                @Syntax("<env>")
+                                @Description("The world's environment. See: /mv env")
+                                Environment environment,

-        Command.broadcastCommandMessage(sender, "Starting creation of world '" + worldName + "'...");
+                                @Nullable
+                                @Syntax("[world-flags]")
+                                @Description("Other world settings. See: http://gg.gg/nn8bl")
+                                String[] flagsArray) {

-        if (this.worldManager.addWorld(worldName, environment, seed, type, generator, useSpawnAdjust)) {
-            Command.broadcastCommandMessage(sender, "Complete!");
-        } else {
-            Command.broadcastCommandMessage(sender, "FAILED.");
-        }
+        FlagResult flags = this.getFlagGroup().calculateResult(flagsArray);
+
+        Command.broadcastCommandMessage(sender, String.format("Starting creation of world '%s'...", worldName));
+        Command.broadcastCommandMessage(sender, (this.plugin.getMVWorldManager().addWorld(
+                worldName,
+                environment,
+                // TODO API: Should Allow FlagResult object to be passed directly
+                flags.getValue(CoreFlags.SEED),
+                flags.getValue(CoreFlags.WORLD_TYPE),
+                flags.getValue(CoreFlags.GENERATE_STRUCTURES),
+                flags.getValue(CoreFlags.GENERATOR),
+                flags.getValue(CoreFlags.SPAWN_ADJUST))
+        )
+                ? String.format("%sComplete!", ChatColor.GREEN)
+                : String.format("%sFailed! See console for errors.", ChatColor.RED));
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,59 +7,85 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.dumptruckman.minecraft.util.Logging;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-import java.util.logging.Level;
-
-/**
- * Enables debug-information.
- */
-public class DebugCommand extends MultiverseCommand {
+@CommandAlias("mv")
+@CommandPermission("multiverse.core.debug")
+public class DebugCommand extends MultiverseCoreCommand {

    public DebugCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Turn Debug on/off?");
-        this.setCommandUsage("/mv debug" + ChatColor.GOLD + " [1|2|3|off]");
-        this.setArgRange(0, 1);
-        this.addKey("mv debug");
-        this.addKey("mv d");
-        this.addKey("mvdebug");
-        this.addCommandExample("/mv debug " + ChatColor.GOLD + "2");
-        this.setPermission("multiverse.core.debug", "Spams the console a bunch.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (args.size() == 1) {
-            if (args.get(0).equalsIgnoreCase("off")) {
-                MultiverseCore.GlobalDebug = 0;
-            } else {
-                try {
-                    int debugLevel = Integer.parseInt(args.get(0));
-                    if (debugLevel > 3 || debugLevel < 0) {
-                        throw new NumberFormatException();
-                    }
-                    MultiverseCore.GlobalDebug = debugLevel;
-                } catch (NumberFormatException e) {
-                    sender.sendMessage(ChatColor.RED + "Error" + ChatColor.WHITE
-                            + " setting debug level. Please use a number 0-3 " + ChatColor.AQUA + "(3 being many many messages!)");
-                }
+    @Subcommand("debug")
+    @CommandPermission("multiverse.core.debug")
+    @Description("Show the current debug level.")
+    public void onShowDebugCommand(@NotNull CommandSender sender) {
+        displayDebugMode(sender);
+    }

-            }
+    @Subcommand("debug")
+    @CommandPermission("multiverse.core.debug")
+    @Syntax("<level>")
+    @CommandCompletion("@toggles|@range:3")
+    @Description("Change debug level.")
+    public void onChangeDebugCommand(@NotNull CommandSender sender,
+
+                                     @NotNull
+                                     @Syntax("<level>")
+                                     @Description("Set debug mode level, 0 to 3.")
+                                     @Single String debugLevel) {
+
+        int parsedLevel = parseDebugLevel(debugLevel);
+        if (parsedLevel == -1) {
+            throw new InvalidCommandArgument("No such debug level. Please use a number from 0 to 3.");
        }
-        this.displayDebugMode(sender);
+
+        this.plugin.getMVConfig().setGlobalDebug(parsedLevel);
+        if (!this.plugin.saveMVConfigs()) {
+            sender.sendMessage(String.format("%sError saving changes to config! See console for more info.", ChatColor.RED));
+        }
+
+        displayDebugMode(sender);
    }

-    private void displayDebugMode(CommandSender sender) {
-        if (MultiverseCore.GlobalDebug == 0) {
-            sender.sendMessage("Multiverse Debug mode is " + ChatColor.RED + "OFF");
-        } else {
-            sender.sendMessage("Multiverse Debug mode is " + ChatColor.GREEN + MultiverseCore.GlobalDebug);
-            this.plugin.log(Level.FINE, "Multiverse Debug ENABLED");
+    private int parseDebugLevel(@NotNull String debugLevel) {
+        if (debugLevel.equalsIgnoreCase("off")) {
+            return 0;
+        }
+        if (debugLevel.equalsIgnoreCase("on")) {
+            return 1;
+        }
+
+        try {
+            int parsedLevel = Integer.parseInt(debugLevel);
+            return (parsedLevel > 3 || parsedLevel < 0) ? -1 : parsedLevel;
+        }
+        catch (NumberFormatException ignored) {
+            return -1;
+        }
+    }
+
+    private void displayDebugMode(@NotNull CommandSender sender) {
+        int debugLevel = this.plugin.getMVConfig().getGlobalDebug();
+        if (debugLevel == 0) {
+            sender.sendMessage(String.format("Multiverse Debug mode is %soff", ChatColor.RED));
+        }
+        else {
+            sender.sendMessage(String.format("Multiverse Debug mode at level %s%s", ChatColor.GREEN, debugLevel));
+            Logging.fine("Multiverse debug mode enabled!");
        }
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,35 +7,58 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.queue.QueuedCommand;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Deletes worlds.
- */
-public class DeleteCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class DeleteCommand extends MultiverseCoreCommand {

    public DeleteCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Delete World");
-        this.setCommandUsage("/mv delete" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvdelete");
-        this.addKey("mv delete");
-        this.addCommandExample("/mv create " + ChatColor.GOLD + "MyWorld");
-        this.setPermission("multiverse.core.delete", "Deletes a world on your server. " + ChatColor.RED + "PERMANENTLY.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Class<?>[] paramTypes = {String.class};
-        List<Object> objectArgs = new ArrayList<Object>(args);
-        this.plugin.getCommandHandler().queueCommand(sender, "mvdelete", "deleteWorld", objectArgs,
-                paramTypes, ChatColor.GREEN + "World Deleted!", ChatColor.RED + "World could NOT be deleted!");
+    @Subcommand("delete")
+    @CommandPermission("multiverse.core.delete")
+    @Syntax("<world>")
+    @CommandCompletion("@MVWorlds|@unloadedWorlds")
+    @Description("Deletes a world on your server PERMANENTLY.")
+    public void onDeleteCommand(@NotNull CommandSender sender,
+
+                                @NotNull
+                                @Syntax("<world>")
+                                @Description("Multiverse world you want to delete.")
+                                @Flags("trim")
+                                @Conditions("isWorldInConfig|validWorldFolder")
+                                @Single String worldName) {
+
+        this.plugin.getMVCommandManager().getQueueManager().addToQueue(new QueuedCommand.Builder()
+                .sender(sender)
+                .action(deleteRunnable(sender, worldName))
+                .prompt("Are you sure you want to delete world '%s'?", worldName)
+                .build()
+        );
+    }
+
+    private Runnable deleteRunnable(@NotNull CommandSender sender,
+                                    @NotNull String worldName) {
+
+        return () -> {
+            sender.sendMessage(String.format("Deleting world '%s'...", worldName));
+            sender.sendMessage((this.plugin.getMVWorldManager().deleteWorld(worldName))
+                    ? String.format("%sWorld %s was deleted!", ChatColor.GREEN, worldName)
+                    : String.format("%sThere was an issue deleting '%s'! Please check console for errors.", ChatColor.RED, worldName));
+        };
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,32 +7,28 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import org.bukkit.ChatColor;
-import org.bukkit.World;
-import org.bukkit.WorldType;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;

-import java.util.List;
-
-/**
- * Lists valid known environments.
- */
-public class EnvironmentCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class EnvironmentCommand extends MultiverseCoreCommand {

    public EnvironmentCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("List Environments");
-        this.setCommandUsage("/mv env");
-        this.setArgRange(0, 0);
-        this.addKey("mvenv");
-        this.addKey("mv env");
-        this.addKey("mv type");
-        this.addKey("mv environment");
-        this.addKey("mv environments");
-        this.addCommandExample("/mv env");
-        this.setPermission("multiverse.core.list.environments", "Lists valid known environments/world types.", PermissionDefault.OP);
+    }
+
+    @Subcommand("env|environments")
+    @CommandPermission("multiverse.core.list.environments")
+    @Description("Lists valid known environments and world types.")
+    public void onEnvironmentCommand(CommandSender sender) {
+        showEnvironments(sender);
+        sender.sendMessage("");
+        showWorldTypes(sender);
    }

    /**
@@ -41,72 +37,19 @@ public class EnvironmentCommand extends MultiverseCommand {
     * @param sender The {@link CommandSender}.
     */
    public static void showEnvironments(CommandSender sender) {
-        sender.sendMessage(ChatColor.YELLOW + "Valid Environments are:");
-        sender.sendMessage(ChatColor.GREEN + "NORMAL");
-        sender.sendMessage(ChatColor.RED + "NETHER");
-        sender.sendMessage(ChatColor.AQUA + "END");
+        sender.sendMessage(String.format("%sValid Environments are:", ChatColor.YELLOW));
+        sender.sendMessage(String.format("%sNORMAL%s, %sNETHER %sor %sEND",
+                ChatColor.GREEN, ChatColor.WHITE, ChatColor.RED, ChatColor.WHITE, ChatColor.AQUA));
    }
+
    /**
     * Shows all valid known world types to a {@link CommandSender}.
     *
     * @param sender The {@link CommandSender}.
     */
    public static void showWorldTypes(CommandSender sender) {
-        sender.sendMessage(ChatColor.YELLOW + "Valid World Types are:");
-        sender.sendMessage(String.format("%sNORMAL %sor %sFLAT",
-                ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA));
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        EnvironmentCommand.showEnvironments(sender);
-        EnvironmentCommand.showWorldTypes(sender);
-    }
-
-    /**
-     * Converts a {@link String} into a {@link WorldType}.
-     *
-     * @param type The WorldType as a {@link String}
-     * @return The WorldType as a {@link WorldType}
-     */
-    public static WorldType getWorldTypeFromString(String type) {
-        // Don't reference the enum directly as there aren't that many, and we can be more forgiving to users this way
-        if (type.equalsIgnoreCase("normal"))
-            type = "NORMAL";
-        if (type.equalsIgnoreCase("flat"))
-            type = "FLAT";
-        try {
-            // Now that we've converted a potentially unfriendly value
-            // to a friendly one, get it from the ENUM!
-            return WorldType.valueOf(type);
-        } catch (IllegalArgumentException e) {
-            return null;
-        }
-    }
-
-    /**
-     * Converts a {@link String} into an {@link org.bukkit.World.Environment}.
-     *
-     * @param env The environment as {@link String}
-     * @return The environment as {@link org.bukkit.World.Environment}
-     */
-    public static World.Environment getEnvFromString(String env) {
-        // Don't reference the enum directly as there aren't that many, and we can be more forgiving to users this way
-        if (env.equalsIgnoreCase("HELL") || env.equalsIgnoreCase("NETHER"))
-            env = "NETHER";
-
-        if (env.equalsIgnoreCase("END") || env.equalsIgnoreCase("THEEND") || env.equalsIgnoreCase("STARWARS"))
-            env = "THE_END";
-
-        if (env.equalsIgnoreCase("NORMAL") || env.equalsIgnoreCase("WORLD"))
-            env = "NORMAL";
-
-        try {
-            // Now that we've converted a potentially unfriendly value
-            // to a friendly one, get it from the ENUM!
-            return World.Environment.valueOf(env);
-        } catch (IllegalArgumentException e) {
-            return null;
-        }
+        sender.sendMessage(String.format("%sValid World Types are:", ChatColor.YELLOW));
+        sender.sendMessage(String.format("%sNORMAL%s, %sFLAT%s, %sLARGEBIOMES %sor %sAMPLIFIED",
+                ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, ChatColor.WHITE, ChatColor.RED, ChatColor.WHITE, ChatColor.GOLD));
    }
 }
@@ -0,0 +1,106 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.context.GameRuleProperty;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.ContentFilter;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
+import com.onarandombox.MultiverseCore.displaytools.DisplaySettings;
+import org.bukkit.ChatColor;
+import org.bukkit.GameRule;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+@CommandAlias("mv")
+@Subcommand("gamerule")
+public class GameRuleCommand extends MultiverseCoreCommand {
+
+    public GameRuleCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @Subcommand("list")
+    @CommandPermission("multiverse.core.gamerule.list")
+    @Syntax("[world] [filter]")
+    @CommandCompletion("@MVWorlds")
+    @Description("See the list gamerules values for a given world.")
+    public void onGameRulesCommand(@NotNull CommandSender sender,
+
+                                   @NotNull
+                                   @Syntax("[world]")
+                                   @Description("World you want to see game rule info.")
+                                   @Flags("other,defaultself, fallbackself") MultiverseWorld world,
+
+                                   @NotNull ContentFilter filter) {
+
+        new ContentDisplay.Builder<Map<String, Object>>()
+                .sender(sender)
+                .header("=== Gamerules for %s%s%s ===", ChatColor.AQUA, world.getName(), ChatColor.WHITE)
+                .contents(getGameRuleMap(world))
+                .displayHandler(DisplayHandlers.INLINE_MAP)
+                .colorTool(ColorAlternator.with(ChatColor.GREEN, ChatColor.GOLD))
+                .setting(DisplaySettings.OPERATOR, ": ")
+                .filter(filter)
+                .display();
+    }
+
+    private Map<String, Object> getGameRuleMap(MultiverseWorld world) {
+        return new HashMap<String, Object>() {{
+            Arrays.stream(GameRule.values())
+                    .forEach(gr -> {
+                        Object value = world.getCBWorld().getGameRuleValue(gr);
+                        if (value != null) {
+                            put(gr.getName(), value.toString());
+                        }
+                    });
+        }};
+    }
+
+    @Subcommand("set")
+    @CommandPermission("multiverse.core.gamerule.set")
+    @Syntax("<rule> <value> [world]")
+    @CommandCompletion("@gameRules @empty @MVWorlds")
+    @Description("Allows a player to set a gamerule for a given world.")
+    public <T> void onGameRuleChangeCommand(@NotNull CommandSender sender,
+                                            @NotNull Player player,
+
+                                            @Syntax("<rule> <value>")
+                                            @Description("Game rule property and value you want to change to.")
+                                            @NotNull GameRuleProperty<T> property,
+
+                                            @Syntax("[world]")
+                                            @Description("World you want to set this game rule.")
+                                            @NotNull @Flags("other,defaultself") MultiverseWorld world) {
+
+        sender.sendMessage((world.getCBWorld().setGameRule(property.getGameRule(), property.getValue()))
+
+                ? String.format("%sSuccess! %sGamerule %s%s%s was set to %s%s%s.",
+                ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, property.getGameRule().getName(),
+                ChatColor.WHITE, ChatColor.GREEN, property.getValue(), ChatColor.WHITE)
+
+                : String.format("%sFailure! Gamerule %s%s%s could not be set to %s%s%s.",
+                ChatColor.RED, ChatColor.AQUA, property.getGameRule().getName(),
+                ChatColor.RED, ChatColor.DARK_RED, property.getValue(), ChatColor.RED));
+    }
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,54 +7,39 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.flag.CoreFlags;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
-import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;

-import java.util.ArrayList;
-import java.util.List;
-import java.util.logging.Level;
+import java.util.Collection;

-/**
- * Returns a list of loaded generator plugins.
- */
-public class GeneratorCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class GeneratorCommand extends MultiverseCoreCommand {

    public GeneratorCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("World Information");
-        this.setCommandUsage("/mv generators");
-        this.setArgRange(0, 0);
-        this.addKey("mv generators");
-        this.addKey("mvgenerators");
-        this.addKey("mv gens");
-        this.addKey("mvgens");
-        this.addCommandExample("/mv generators");
-        this.setPermission("multiverse.core.generator", "Returns a list of Loaded Generator Plugins.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        this.plugin.log(Level.INFO, "PLEASE IGNORE the 'Plugin X does not contain any generators' message below!");
-        Plugin[] plugins = this.plugin.getServer().getPluginManager().getPlugins();
-        List<String> generators = new ArrayList<String>();
-        for (Plugin p : plugins) {
-            if (p.isEnabled() && p.getDefaultWorldGenerator("world", "") != null) {
-                generators.add(p.getDescription().getName());
-            }
-        }
-        sender.sendMessage(ChatColor.AQUA + "--- Loaded Generator Plugins ---");
-        String loadedGens = "";
-        boolean altColor = false;
-        for (String s : generators) {
-            loadedGens += (altColor ? ChatColor.YELLOW : ChatColor.WHITE) + s + " ";
-            altColor = !altColor;
-        }
-        if (loadedGens.length() == 0) {
-            loadedGens = ChatColor.RED + "No Generator Plugins found.";
-        }
-        sender.sendMessage(loadedGens);
+    @Subcommand("gens|generators")
+    @CommandPermission("multiverse.core.generator")
+    @Description("Shows a list of Loaded Generator Plugins.")
+    public void onGeneratorCommand(@NotNull CommandSender sender) {
+        new ContentDisplay.Builder<Collection<String>>()
+                .sender(sender)
+                .header("%s--- Available Generator Plugins ---", ChatColor.GOLD)
+                .contents(CoreFlags.GENERATOR.suggestValue())
+                .emptyMessage("%sYou do not have any generator plugins installed.", ChatColor.RED)
+                .displayHandler(DisplayHandlers.INLINE_LIST)
+                .colorTool(ColorAlternator.with(ChatColor.AQUA, ChatColor.WHITE))
+                .display();
    }
 }
@@ -1,106 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.pneumaticraft.commandhandler.Command;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Displays a nice help menu.
- */
-public class HelpCommand extends PaginatedCoreCommand<Command> {
-
-    public HelpCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Get Help with Multiverse");
-        this.setCommandUsage("/mv " + ChatColor.GOLD + "[FILTER] [PAGE #]");
-        this.setArgRange(0, 2);
-        this.addKey("mv");
-        this.addKey("mvh");
-        this.addKey("mvhelp");
-        this.addKey("mv help");
-        this.addKey("mvsearch");
-        this.addKey("mv search");
-        this.addCommandExample("/mv help ?");
-        this.setPermission("multiverse.help", "Displays a nice help menu.", PermissionDefault.TRUE);
-        this.setItemsPerPage(7); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-    }
-
-    @Override
-    protected List<Command> getFilteredItems(List<Command> availableItems, String filter) {
-        List<Command> filtered = new ArrayList<Command>();
-
-        for (Command c : availableItems) {
-            if (stitchThisString(c.getKeyStrings()).matches("(?i).*" + filter + ".*")) {
-                filtered.add(c);
-            } else if (c.getCommandName().matches("(?i).*" + filter + ".*")) {
-                filtered.add(c);
-            } else if (c.getCommandDesc().matches("(?i).*" + filter + ".*")) {
-                filtered.add(c);
-            } else if (c.getCommandUsage().matches("(?i).*" + filter + ".*")) {
-                filtered.add(c);
-            } else {
-                for (String example : c.getCommandExamples()) {
-                    if (example.matches("(?i).*" + filter + ".*")) {
-                        filtered.add(c);
-                        break;
-                    }
-                }
-            }
-        }
-        return filtered;
-    }
-
-    @Override
-    protected String getItemText(Command item) {
-        return ChatColor.AQUA + item.getCommandUsage();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        sender.sendMessage(ChatColor.AQUA + "====[ Multiverse Help ]====");
-
-        FilterObject filterObject = this.getPageAndFilter(args);
-
-        List<Command> availableCommands = new ArrayList<Command>(this.plugin.getCommandHandler().getCommands(sender));
-        if (filterObject.getFilter().length() > 0) {
-            availableCommands = this.getFilteredItems(availableCommands, filterObject.getFilter());
-            if (availableCommands.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE
-                        + "No commands matched your filter: " + ChatColor.AQUA + filterObject.getFilter());
-                return;
-            }
-        }
-
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.AQUA + " Add a '" + ChatColor.DARK_PURPLE + "?" + ChatColor.AQUA + "' after a command to see more about it.");
-            for (Command c : availableCommands) {
-                sender.sendMessage(ChatColor.AQUA + c.getCommandUsage());
-            }
-            return;
-        }
-
-        int totalPages = (int) Math.ceil(availableCommands.size() / (this.itemsPerPage + 0.0));
-
-        if (filterObject.getPage() > totalPages) {
-            filterObject.setPage(totalPages);
-        }
-
-        sender.sendMessage(ChatColor.AQUA + " Page " + filterObject.getPage() + " of " + totalPages);
-        sender.sendMessage(ChatColor.AQUA + " Add a '" + ChatColor.DARK_PURPLE + "?" + ChatColor.AQUA + "' after a command to see more about it.");
-
-        this.showPage(filterObject.getPage(), sender, availableCommands);
-    }
-}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,169 +7,66 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.pneumaticraft.commandhandler.CommandHandler;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagResult;
+import com.onarandombox.MultiverseCore.commandtools.flag.CoreFlags;
 import org.bukkit.ChatColor;
-import org.bukkit.World.Environment;
-import org.bukkit.WorldType;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;

-import java.io.File;
-import java.io.FilenameFilter;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
+import static org.bukkit.World.*;

-/**
- * Imports a new world of the specified type.
- */
-public class ImportCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
+@CommandAlias("mv")
+public class ImportCommand extends MultiverseCoreCommand {

    public ImportCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Import World");
-        this.setCommandUsage("/mv import" + ChatColor.GREEN + " {NAME} {ENV} " + ChatColor.GOLD + " -g [GENERATOR[:ID]] [-n] -t [TYPE]");
-        this.setArgRange(2, 5); // SUPPRESS CHECKSTYLE: MagicNumberCheck
-        this.addKey("mvimport");
-        this.addKey("mvim");
-        this.addKey("mv import");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "gargamel" + ChatColor.GREEN + " normal");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "flatroom" + ChatColor.GREEN + " normal" + ChatColor.AQUA + " -t flat");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "hell_world" + ChatColor.GREEN + " nether");
-        this.addCommandExample("/mv import " + ChatColor.GOLD + "CleanRoom" + ChatColor.GREEN + " normal" + ChatColor.DARK_AQUA + " CleanRoomGenerator");
-        this.setPermission("multiverse.core.import", "Imports a new world of the specified type.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
+        this.setFlagGroup(FlagGroup.of(CoreFlags.GENERATOR, CoreFlags.SPAWN_ADJUST));
    }

-    /**
-     * A very basic check to see if a folder has a level.dat file.
-     * If it does, we can safely assume it's a world folder.
-     *
-     * @param worldFolder The File that may be a world.
-     * @return True if it looks like a world, false if not.
-     */
-    private boolean checkIfIsWorld(File worldFolder) {
-        if (worldFolder.isDirectory()) {
-            File[] files = worldFolder.listFiles(new FilenameFilter() {
-                @Override
-                public boolean accept(File file, String name) {
-                    return name.equalsIgnoreCase("level.dat");
-                }
-            });
-            if (files != null && files.length > 0) {
-                return true;
-            }
-        }
-        return false;
-    }
+    @Subcommand("import")
+    @CommandPermission("multiverse.core.import")
+    @Syntax("<name> <env> -g [generator[:id]] [-n]")
+    @CommandCompletion("@potentialWorlds @environments @flags")
+    @Description("Imports a new world into multiverse.")
+    public void onImportCommand(@NotNull CommandSender sender,

-    private String getPotentialWorlds() {
-        File worldFolder = this.plugin.getServer().getWorldContainer();
-        if (worldFolder == null) {
-            return "";
-        }
-        File[] files = worldFolder.listFiles();
-        String worldList = "";
-        Collection<MultiverseWorld> worlds = this.worldManager.getMVWorlds();
-        List<String> worldStrings = new ArrayList<String>();
-        for (MultiverseWorld world : worlds) {
-            worldStrings.add(world.getName());
-        }
-        for (String world : this.worldManager.getUnloadedWorlds()) {
-            worldStrings.add(world);
-        }
-        ChatColor currColor = ChatColor.WHITE;
-        for (File file : files) {
-            if (file.isDirectory() && checkIfIsWorld(file) && !worldStrings.contains(file.getName())) {
-                worldList += currColor + file.getName() + " ";
-                if (currColor == ChatColor.WHITE) {
-                    currColor = ChatColor.YELLOW;
-                } else {
-                    currColor = ChatColor.WHITE;
-                }
-            }
-        }
-        return worldList;
-    }
+                                @Syntax("<name>")
+                                @Description("Folder name of the world.")
+                                @NotNull @co.aikar.commands.annotation.Flags("trim") @Conditions("importableWorldName") String worldName,

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        String worldName = args.get(0);
+                                @NotNull
+                                @Syntax("<env>")
+                                @Description("The world's environment. See: /mv env")
+                                Environment environment,

-        if (worldName.toLowerCase().equals("--list") || worldName.toLowerCase().equals("-l")) {
-            String worldList = this.getPotentialWorlds();
-            if (worldList.length() > 2) {
-                sender.sendMessage(ChatColor.AQUA + "====[ These look like worlds ]====");
-                sender.sendMessage(worldList);
-            } else {
-                sender.sendMessage(ChatColor.RED + "No potential worlds found. Sorry!");
-            }
-            return;
-        }
-        // Since we made an exception for the list, we have to make sure they have at least 2 params:
-        // Note the exception is --list, which is covered above.
-        if (args.size() == 1) {
-            this.showHelp(sender);
-            return;
-        }
+                                @Nullable
+                                @Syntax("-g [generator[:id]] [-n]")
+                                @Description("Other world settings. See: http://gg.gg/nn8c2")
+                                String[] flagsArray) {

-        // Make sure we don't already know about this world.
-        if (this.worldManager.isMVWorld(worldName)) {
-            sender.sendMessage(ChatColor.GREEN + "Multiverse" + ChatColor.WHITE
-                    + " already knows about '" + ChatColor.AQUA + worldName + ChatColor.WHITE + "'!");
-            return;
-        }
+        FlagResult flags = this.getFlagGroup().calculateResult(flagsArray);

-        File worldFile = new File(this.plugin.getServer().getWorldContainer(), worldName);
-
-        String generator = CommandHandler.getFlag("-g", args);
-        String typeString = CommandHandler.getFlag("-t", args);
-        boolean useSpawnAdjust = true;
-        for (String s : args) {
-            if (s.equalsIgnoreCase("-n")) {
-                useSpawnAdjust = false;
-            }
-        }
-
-        String env = args.get(1);
-        Environment environment = EnvironmentCommand.getEnvFromString(env);
-        if (environment == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid environment.");
-            EnvironmentCommand.showEnvironments(sender);
-            return;
-        }
-
-        // If they didn't specify a type, default to NORMAL
-        if (typeString == null) {
-            typeString = "NORMAL";
-        }
-        WorldType type = EnvironmentCommand.getWorldTypeFromString(typeString);
-        if (type == null) {
-            sender.sendMessage(ChatColor.RED + "That is not a valid World Type.");
-            EnvironmentCommand.showWorldTypes(sender);
-            return;
-        }
-
-        if (worldFile.exists() && env != null) {
-            Command.broadcastCommandMessage(sender, String.format("Starting import of world '%s'...", worldName));
-            if (this.worldManager.addWorld(worldName, environment, null, type, generator, useSpawnAdjust))
-                Command.broadcastCommandMessage(sender, ChatColor.GREEN + "Complete!");
-            else
-                Command.broadcastCommandMessage(sender, ChatColor.RED + "Failed!");
-        } else if (env == null) {
-            sender.sendMessage(ChatColor.RED + "FAILED.");
-            sender.sendMessage("That world environment did not exist.");
-            sender.sendMessage("For a list of available world types, type: " + ChatColor.AQUA + "/mvenv");
-        } else {
-            sender.sendMessage(ChatColor.RED + "FAILED.");
-            String worldList = this.getPotentialWorlds();
-            sender.sendMessage("That world folder does not exist. These look like worlds to me:");
-            sender.sendMessage(worldList);
-        }
+        Command.broadcastCommandMessage(sender, String.format("Starting import of world '%s'...", worldName));
+        Command.broadcastCommandMessage(sender, (this.plugin.getMVWorldManager().addWorld(worldName,
+                environment,
+                null,
+                null,
+                null,
+                flags.getValue(CoreFlags.GENERATOR),
+                flags.getValue(CoreFlags.SPAWN_ADJUST))
+        )
+                ? String.format("%sComplete!", ChatColor.GREEN)
+                : String.format("%sFailed! See console for more details.", ChatColor.RED));
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,251 +7,141 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Default;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.FancyText;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.utils.FancyColorScheme;
-import com.onarandombox.MultiverseCore.utils.FancyHeader;
-import com.onarandombox.MultiverseCore.utils.FancyMessage;
-import com.onarandombox.MultiverseCore.utils.LocationManipulation;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
+import com.onarandombox.MultiverseCore.displaytools.DisplaySettings;
 import org.bukkit.ChatColor;
-import org.bukkit.Location;
+import org.bukkit.World;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;

-// Will use when we can compile with JDK 6
-//import com.sun.xml.internal.ws.util.StringUtils;
-
-/**
- * Returns detailed information about a world.
- */
-public class InfoCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
+@CommandAlias("mv")
+public class InfoCommand extends MultiverseCoreCommand {

    public InfoCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("World Information");
-        this.setCommandUsage("/mv info" + ChatColor.GOLD + " [WORLD] [PAGE]");
-        this.setArgRange(0, 2);
-        this.addKey("mvinfo");
-        this.addKey("mvi");
-        this.addKey("mv info");
-        this.addCommandExample("/mv info " + ChatColor.GOLD + "1");
-        this.addCommandExample("/mv info " + ChatColor.GOLD + "3");
-        this.setPermission("multiverse.core.info", "Returns detailed information on the world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Check if the command was sent from a Player.
-        String worldName = "";
-        int pageNum = 0;
+    @Subcommand("info")
+    @CommandPermission("multiverse.core.info")
+    @Syntax("[world] [page]")
+    @CommandCompletion("@MVWorlds @range:1-5")
+    @Description("Display detailed information of the world.")
+    public void onInfoCommand(@NotNull CommandSender sender,

-        if (args.size() == 0) {
-            if (sender instanceof Player) {
-                Player p = (Player) sender;
-                worldName = p.getWorld().getName();
-            } else {
-                sender.sendMessage("You must enter a" + ChatColor.LIGHT_PURPLE + " world" + ChatColor.WHITE + " from the console!");
-                return;
-            }
-        } else if (args.size() == 1) {
-            if (this.worldManager.getMVWorld(args.get(0)) != null) {
-                // then we have a world!
-                worldName = args.get(0);
-            } else {
-                if (sender instanceof Player) {
-                    Player p = (Player) sender;
-                    worldName = p.getWorld().getName();
-                    try {
-                        pageNum = Integer.parseInt(args.get(0)) - 1;
-                    } catch (NumberFormatException e) {
-                        pageNum = 0;
-                    }
-                } else {
-                    sender.sendMessage("You must enter a" + ChatColor.LIGHT_PURPLE + " world" + ChatColor.WHITE + " from the console!");
-                    return;
-                }
-            }
-        } else if (args.size() == 2) {
-            worldName = args.get(0);
-            try {
-                pageNum = Integer.parseInt(args.get(1)) - 1;
-            } catch (NumberFormatException e) {
-                pageNum = 0;
-            }
-        }
+                              @NotNull
+                              @Syntax("[world]")
+                              @Description("World you want to see info.")
+                              @Flags("other,defaultself,fallbackself") MultiverseWorld world,

-        if (this.worldManager.isMVWorld(worldName)) {
-            Player p = null;
-            if (sender instanceof Player) {
-                p = (Player) sender;
-            }
-            showPage(pageNum, sender, this.buildEntireCommand(this.worldManager.getMVWorld(worldName), p));
-        } else if (this.plugin.getServer().getWorld(worldName) != null) {
-            sender.sendMessage("That world exists, but multiverse does not know about it!");
-            sender.sendMessage("You can import it with" + ChatColor.AQUA + "/mv import " + ChatColor.GREEN + worldName + ChatColor.LIGHT_PURPLE + "{ENV}");
-            sender.sendMessage("For available environments type " + ChatColor.GREEN + "/mv env");
-        }
+                              @Syntax("[page]")
+                              @Description("Info page to display.")
+                              @Default("1") int page) {
+
+        new ContentDisplay.Builder<Collection<String>>()
+                .sender(sender)
+                .contents(buildWorldInfoContent(world))
+                .displayHandler(DisplayHandlers.PAGE_LIST)
+                .colorTool(ColorAlternator.with(ChatColor.YELLOW, ChatColor.AQUA)).setting(DisplaySettings.SHOW_PAGE, page)
+                .display();
    }

-    private List<List<FancyText>> buildEntireCommand(MultiverseWorld world, Player p) {
-        List<FancyText> message = new ArrayList<FancyText>();
-        List<List<FancyText>> worldInfo = new ArrayList<List<FancyText>>();
+    private List<String> buildWorldInfoContent(MultiverseWorld world) {
+        List<String> contents = new ArrayList<>(38);
+
        // Page 1
-        FancyColorScheme colors = new FancyColorScheme(ChatColor.AQUA, ChatColor.AQUA, ChatColor.GOLD, ChatColor.WHITE);
-        message.add(new FancyHeader("General Info", colors));
-        message.add(new FancyMessage("World Name: ", world.getName(), colors));
-        message.add(new FancyMessage("World Alias: ", world.getColoredWorldString(), colors));
-        message.add(new FancyMessage("Game Mode: ", world.getGameMode().toString(), colors));
-        message.add(new FancyMessage("World Type: ", world.getWorldType().toString(), colors));
-        //message.add(new FancyMessage("Game Mode: ", StringUtils.capitalize(world.getGameMode().toString()), colors));
-        Location spawn = world.getSpawnLocation();
-        message.add(new FancyMessage("Spawn Location: ", LocationManipulation.strCoords(spawn), colors));
-        message.add(new FancyMessage("World Scale: ", world.getScaling() + "", colors));
-        if (world.getPrice() > 0) {
-            message.add(new FancyMessage("Price to enter this world: ",
-                    this.plugin.getBank().getFormattedAmount(p, world.getPrice(), world.getCurrency()), colors));
-        } else {
-            message.add(new FancyMessage("Price to enter this world: ", ChatColor.GREEN + "FREE!", colors));
-        }
+        contents.add(parseHeader("General Info"));
+        contents.add(String.format("World Name: %s%s", ChatColor.WHITE, world.getName()));
+        contents.add(String.format("World Alias: %s%s", ChatColor.WHITE,  world.getColoredWorldString()));
+        contents.add(String.format("Game Mode: %s%s", ChatColor.WHITE, world.getGameMode().toString()));
+        contents.add(String.format("Difficulty: %s%s", ChatColor.WHITE, world.getDifficulty().toString()));
+        contents.add(String.format("Spawn Location: %s%s", ChatColor.WHITE, this.plugin.getLocationManipulation().strCoords(world.getSpawnLocation())));
+        contents.add(String.format("World Seed: %s%s", ChatColor.WHITE, world.getSeed()));
+        String priceString = (world.getPrice() == 0)
+                ? String.format("%sFREE!", ChatColor.GREEN)
+                : plugin.getEconomist().formatPrice(-world.getPrice(), world.getCurrency());
+        contents.add(String.format((world.getPrice() >= 0)
+                ? "Price to enter this world: %s%s"
+                : "Reward for entering this world: %s%s", ChatColor.WHITE, priceString));
+        World respawnWorld = world.getRespawnToWorld();
+        MultiverseWorld respawn = this.plugin.getMVWorldManager().getMVWorld(respawnWorld);
+        String respawnWorldString = (respawn != null)
+                ? respawn.getColoredWorldString()
+                : ChatColor.RED + "!!INVALID!!";
+        contents.add(String.format("Players will respawn in: %s%s", ChatColor.WHITE, respawnWorldString));
+        contents.add(ContentDisplay.LINE_BREAK);

-        if (world.getRespawnToWorld() != null) {
-            MultiverseWorld respawn = this.worldManager.getMVWorld(world.getRespawnToWorld());
-            if (respawn != null) {
-                message.add(new FancyMessage("Players will respawn in: ", respawn.getColoredWorldString(), colors));
-            } else {
-                message.add(new FancyMessage("Players will respawn in: ", ChatColor.RED + "!!INVALID!!", colors));
-            }
-
-        }
-
-        worldInfo.add(message);
        // Page 2
-        message = new ArrayList<FancyText>();
-        message.add(new FancyHeader("More World Settings", colors));
-        message.add(new FancyMessage("Difficulty: ", world.getDifficulty().toString(), colors));
-        message.add(new FancyMessage("Weather: ", world.isWeatherEnabled() + "", colors));
-        message.add(new FancyMessage("Players will get hungry: ", world.getHunger() + "", colors));
-        message.add(new FancyMessage("Keep spawn in memory: ", world.isKeepingSpawnInMemory() + "", colors));
-        message.add(new FancyHeader("PVP Settings", colors));
-        message.add(new FancyMessage("Multiverse Setting: ", world.isPVPEnabled() + "", colors));
-        message.add(new FancyMessage("Bukkit Setting: ", world.getCBWorld().getPVP() + "", colors));
-        worldInfo.add(message);
+        contents.add(parseHeader("More World Settings"));
+        contents.add(String.format("World UID: %s%s", ChatColor.WHITE, world.getCBWorld().getUID()));
+        contents.add(String.format("World Type: %s%s", ChatColor.WHITE, world.getWorldType().toString()));
+        contents.add(String.format("World Scale: %s%s", ChatColor.WHITE, world.getScaling()));
+        contents.add(String.format("Generator: %s%s", ChatColor.WHITE, world.getGenerator()));
+        contents.add(String.format("Structures: %s%s", ChatColor.WHITE, world.getCBWorld().canGenerateStructures()));
+        contents.add(String.format("Weather: %s%s", ChatColor.WHITE, world.isWeatherEnabled()));
+        contents.add(String.format("Players will get hungry: %s%s", ChatColor.WHITE, world.getHunger()));
+        contents.add(String.format("Keep spawn in memory: %s%s", ChatColor.WHITE, world.isKeepingSpawnInMemory()));
+        contents.add(ContentDisplay.LINE_BREAK);
+
        // Page 3
-        message = new ArrayList<FancyText>();
-        message.add(new FancyHeader("Monster Settings", colors));
-        message.add(new FancyMessage("Multiverse Setting: ", world.canMonstersSpawn() + "", colors));
-        message.add(new FancyMessage("Bukkit Setting: ", world.getCBWorld().getAllowMonsters() + "", colors));
-        if (world.getMonsterList().size() > 0) {
-            if (world.canMonstersSpawn()) {
-                message.add(new FancyMessage("Monsters that" + ChatColor.RED + " CAN NOT "
-                        + ChatColor.GREEN + "spawn: ", toCommaSeperated(world.getMonsterList()), colors));
-            } else {
-                message.add(new FancyMessage("Monsters that" + ChatColor.GREEN + " CAN SPAWN: ", toCommaSeperated(world.getMonsterList()), colors));
-            }
-        } else {
-            message.add(new FancyMessage("Monsters that CAN spawn: ", world.canMonstersSpawn() ? "ALL" : "NONE", colors));
-        }
-        worldInfo.add(message);
+        contents.add(parseHeader("PVP Settings"));
+        contents.add(String.format("Multiverse Setting: %s%s", ChatColor.WHITE, world.isPVPEnabled()));
+        contents.add(String.format("Bukkit Setting: %s%s", ChatColor.WHITE, world.getCBWorld().getPVP()));
+        contents.add(ContentDisplay.LINE_BREAK);

        // Page 4
-        message = new ArrayList<FancyText>();
-        message.add(new FancyHeader("Animal Settings", colors));
-        message.add(new FancyMessage("Multiverse Setting: ", world.canAnimalsSpawn() + "", colors));
-        message.add(new FancyMessage("Bukkit Setting: ", world.getCBWorld().getAllowAnimals() + "", colors));
-        if (world.getMonsterList().size() > 0) {
-            if (world.canMonstersSpawn()) {
-                message.add(new FancyMessage("Animals that" + ChatColor.RED + " CAN NOT "
-                        + ChatColor.GREEN + "spawn: ", toCommaSeperated(world.getAnimalList()), colors));
-            } else {
-                message.add(new FancyMessage("Animals that" + ChatColor.GREEN + " CAN SPAWN: ", toCommaSeperated(world.getAnimalList()), colors));
-            }
-        } else {
-            message.add(new FancyMessage("Animals that CAN spawn: ", world.canAnimalsSpawn() ? "ALL" : "NONE", colors));
-        }
-        worldInfo.add(message);
+        contents.add(parseHeader("Monster Settings"));
+        contents.add(String.format("Multiverse Setting: %s%s", ChatColor.WHITE, world.canMonstersSpawn()));
+        contents.add(String.format("Bukkit Setting: %s%s", ChatColor.WHITE, world.getCBWorld().getAllowMonsters()));
+        contents.add((world.canMonstersSpawn())
+                ? String.format("Monsters that %scannot spawn: %s%s", ChatColor.RED, ChatColor.WHITE, toCommaSeparated(world.getMonsterList()))
+                : String.format("Monsters that %scan spawn: %s%s", ChatColor.GREEN, ChatColor.WHITE, toCommaSeparated(world.getMonsterList())));
+        contents.add(ContentDisplay.LINE_BREAK);

-        return worldInfo;
+        // Page 5
+        contents.add(parseHeader("Animal Settings"));
+        contents.add(String.format("Multiverse Setting: %s%s", ChatColor.WHITE, world.canAnimalsSpawn()));
+        contents.add(String.format("Bukkit Setting: %s%s", ChatColor.WHITE, world.getCBWorld().getAllowAnimals()));
+        contents.add((world.canAnimalsSpawn())
+                ? String.format("Animals that %scannot spawn: %s%s", ChatColor.RED, ChatColor.WHITE, toCommaSeparated(world.getAnimalList()))
+                : String.format("Animals that %scan spawn: %s%s", ChatColor.GREEN, ChatColor.WHITE, toCommaSeparated(world.getAnimalList())));
+
+        return contents;
    }

-    private String toCommaSeperated(List<String> list) {
+    private String parseHeader(String header) {
+        return String.format("%s===[ %s %s]===", ChatColor.AQUA, header, ChatColor.AQUA);
+    }
+
+    private static String toCommaSeparated(List<String> list) {
        if (list == null || list.size() == 0) {
-            return "";
+            return ChatColor.GRAY + ChatColor.ITALIC.toString() + "none";
        }
        if (list.size() == 1) {
            return list.get(0);
        }
-        String result = list.get(0);

+        StringBuilder result = new StringBuilder(list.get(0));
        for (int i = 1; i < list.size() - 1; i++) {
-            result += ", " + list.get(i);
+            result.append(", ").append(list.get(i));
        }
-        result += " and " + list.get(list.size() - 1);
-        return result;
+        result.append(" and ").append(list.get(list.size() - 1));
+
+        return result.toString();
    }
-
-    /**
-     * Gets a "positive" or "negative" {@link ChatColor}.
-     *
-     * @param positive Whether this {@link ChatColor} should be "positive".
-     * @return The {@link ChatColor}.
-     */
-    protected ChatColor getChatColor(boolean positive) {
-        return positive ? ChatColor.GREEN : ChatColor.RED;
-    }
-
-    private void showPage(int page, CommandSender sender, List<List<FancyText>> doc) {
-        page = page < 0 ? 0 : page;
-        page = page > doc.size() - 1 ? doc.size() - 1 : page;
-        boolean altColor = false;
-        boolean appendedPageNum = false;
-        if (sender instanceof Player) {
-            List<FancyText> list = doc.get(page);
-            for (FancyText fancyT : list) {
-                if (fancyT instanceof FancyMessage) {
-                    FancyMessage text = (FancyMessage) fancyT;
-                    text.setAltColor(altColor);
-                    altColor = !altColor;
-                    sender.sendMessage(text.getFancyText());
-                } else if (fancyT instanceof FancyHeader) {
-                    FancyHeader text = (FancyHeader) fancyT;
-                    if (!appendedPageNum) {
-                        text.appendText(ChatColor.DARK_PURPLE + " [ Page " + (page + 1) + " of " + doc.size() + " ]");
-                        appendedPageNum = true;
-                    }
-                    sender.sendMessage(text.getFancyText());
-                    altColor = false;
-                }
-            }
-
-        } else {
-            for (List<FancyText> list : doc) {
-                for (FancyText fancyT : list) {
-                    if (fancyT instanceof FancyMessage) {
-                        FancyMessage text = (FancyMessage) fancyT;
-                        text.setAltColor(altColor);
-                        altColor = !altColor;
-                        sender.sendMessage(text.getFancyText());
-                    } else {
-                        FancyText text = fancyT;
-                        if (appendedPageNum) {
-                            sender.sendMessage(" ");
-                        } else {
-                            appendedPageNum = true;
-                        }
-                        sender.sendMessage(text.getFancyText());
-                        altColor = false;
-                    }
-                }
-            }
-        }
-    }
-
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,122 +7,96 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.context.PageFilter;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
+import com.onarandombox.MultiverseCore.displaytools.DisplaySettings;
 import org.bukkit.ChatColor;
-import org.bukkit.World.Environment;
+import org.bukkit.World;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;

-/**
- * Displays a listing of all worlds that a player can enter.
- */
-public class ListCommand extends PaginatedCoreCommand<String> {
+@CommandAlias("mv")
+public class ListCommand extends MultiverseCoreCommand {

    public ListCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("World Listing");
-        this.setCommandUsage("/mv list");
-        this.setArgRange(0, 2);
-        this.addKey("mvlist");
-        this.addKey("mvl");
-        this.addKey("mv list");
-        this.setPermission("multiverse.core.list.worlds", "Displays a listing of all worlds that you can enter.", PermissionDefault.OP);
-        this.setItemsPerPage(8); // SUPPRESS CHECKSTYLE: MagicNumberCheck
    }

-    private List<String> getFancyWorldList(Player p) {
-        List<String> worldList = new ArrayList<String>();
-        for (MultiverseWorld world : this.plugin.getMVWorldManager().getMVWorlds()) {
+    @Subcommand("list")
+    @CommandPermission("multiverse.core.list.worlds")
+    @Syntax("[filter] [page]")
+    @Description("Displays a listing of all worlds that you can enter.")
+    public void onListCommand(@NotNull CommandSender sender,

-            if (p != null && (!this.plugin.getMVPerms().canEnterWorld(p, world))) {
-                continue;
-            }
+                              @NotNull PageFilter pageFilter) {
+
+        new ContentDisplay.Builder<Collection<String>>()
+                .sender(sender)
+                .header("%s====[ Multiverse World List ]====", ChatColor.GOLD)
+                .contents(getListContents(sender))
+                .displayHandler(DisplayHandlers.PAGE_LIST)
+                .colorTool(ColorAlternator.with(ChatColor.AQUA, ChatColor.GOLD))
+                .setting(DisplaySettings.SHOW_PAGE, pageFilter.getPage())
+                .display();
+    }
+
+    private List<String> getListContents(@NotNull CommandSender sender) {
+        Player player = (sender instanceof Player) ? (Player) sender : null;
+        List<String> worldList =  new ArrayList<>();
+
+        this.plugin.getMVWorldManager().getMVWorlds().stream()
+                .filter(world -> player == null || plugin.getMVPerms().canEnterWorld(player, world))
+                .filter(world -> canSeeWorld(player, world))
+                .map(world -> hiddenText(world) + world.getColoredWorldString() + " - " + parseColouredEnvironment(world.getEnvironment()))
+                .sorted()
+                .forEach(worldList::add);
+
+        this.plugin.getMVWorldManager().getUnloadedWorlds().stream()
+                .filter(world -> plugin.getMVPerms().hasPermission(sender, "multiverse.access." + world, true))
+                .map(world -> ChatColor.GRAY + world + " - UNLOADED")
+                .sorted()
+                .forEach(worldList::add);

-            ChatColor color = ChatColor.GOLD;
-            Environment env = world.getEnvironment();
-            if (env == Environment.NETHER) {
-                color = ChatColor.RED;
-            } else if (env == Environment.NORMAL) {
-                color = ChatColor.GREEN;
-            } else if (env == Environment.THE_END) {
-                color = ChatColor.AQUA;
-            }
-            String outputCache = world.getColoredWorldString() + ChatColor.WHITE + " - " + color + world.getEnvironment();
-            if (world.isHidden()) {
-                if (p == null || p.hasPermission("multiverse.core.modify")) {
-                    // Prefix hidden worlds with an "[H]"
-                    worldList.add(ChatColor.GRAY + "[H]" + outputCache);
-                }
-            } else {
-                worldList.add(outputCache);
-            }
-        }
-        for (String name : this.plugin.getMVWorldManager().getUnloadedWorlds()) {
-            if (p == null || this.plugin.getMVPerms().hasPermission(p, "multiverse.access." + name, true)) {
-                worldList.add(ChatColor.GRAY + name + " - UNLOADED");
-            }
-        }
        return worldList;
    }

-    @Override
-    protected List<String> getFilteredItems(List<String> availableItems, String filter) {
-        List<String> filtered = new ArrayList<String>();
-
-        for (String s : availableItems) {
-            if (s.matches("(?i).*" + filter + ".*")) {
-                filtered.add(s);
-            }
-        }
-        return filtered;
+    private boolean canSeeWorld(Player player, MultiverseWorld world) {
+        return !world.isHidden()
+                || player == null
+                || this.plugin.getMVPerms().hasPermission(player, "multiverse.core.modify", true);
    }

-    @Override
-    protected String getItemText(String item) {
-        return item;
+    private String hiddenText(MultiverseWorld world) {
+        return (world.isHidden()) ? String.format("%s[H] ", ChatColor.GRAY) : "";
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        sender.sendMessage(ChatColor.LIGHT_PURPLE + "====[ Multiverse World List ]====");
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
+    private String parseColouredEnvironment(World.Environment env) {
+        ChatColor color = ChatColor.GOLD;
+        switch (env) {
+            case NETHER:
+                color = ChatColor.RED;
+                break;
+            case NORMAL:
+                color = ChatColor.GREEN;
+                break;
+            case THE_END:
+                color = ChatColor.AQUA;
+                break;
        }
-
-
-        FilterObject filterObject = this.getPageAndFilter(args);
-
-        List<String> availableWorlds = new ArrayList<String>(this.getFancyWorldList(p));
-        if (filterObject.getFilter().length() > 0) {
-            availableWorlds = this.getFilteredItems(availableWorlds, filterObject.getFilter());
-            if (availableWorlds.size() == 0) {
-                sender.sendMessage(ChatColor.RED + "Sorry... " + ChatColor.WHITE
-                        + "No worlds matched your filter: " + ChatColor.AQUA + filterObject.getFilter());
-                return;
-            }
-        }
-
-        if (!(sender instanceof Player)) {
-            for (String c : availableWorlds) {
-                sender.sendMessage(c);
-            }
-            return;
-        }
-
-        int totalPages = (int) Math.ceil(availableWorlds.size() / (this.itemsPerPage + 0.0));
-
-        if (filterObject.getPage() > totalPages) {
-            filterObject.setPage(totalPages);
-        }
-
-        sender.sendMessage(ChatColor.AQUA + " Page " + filterObject.getPage() + " of " + totalPages);
-
-        this.showPage(filterObject.getPage(), sender, availableWorlds);
+        return color + env.toString();
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,36 +7,43 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-
-/**
- * Loads a world into Multiverse.
- */
-public class LoadCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class LoadCommand extends MultiverseCoreCommand {

    public LoadCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Load World");
-        this.setCommandUsage("/mv load" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvload");
-        this.addKey("mv load");
-        this.addCommandExample("/mv load " + ChatColor.GREEN + "MyUnloadedWorld");
-        this.setPermission("multiverse.core.load", "Loads a world into Multiverse.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (this.plugin.getMVWorldManager().loadWorld(args.get(0))) {
-            Command.broadcastCommandMessage(sender, "Loaded world '" + args.get(0) + "'!");
-        } else {
-            sender.sendMessage("Error trying to load world '" + args.get(0) + "'!");
+    @Subcommand("load")
+    @CommandPermission("multiverse.core.load")
+    @Syntax("<world>")
+    @CommandCompletion("@unloadedWorlds")
+    @Description("Loads a world. World must be already in worlds.yml, else please use /mv import.")
+    public void onLoadCommand(@NotNull CommandSender sender,
+
+                              @NotNull
+                              @Syntax("<world>")
+                              @Description("Name of world you want to load.")
+                              @Flags("type=world name")
+                              @Conditions("isUnloadedWorld") String worldName) {
+
+        if (!this.plugin.getMVWorldManager().loadWorld(worldName)) {
+            sender.sendMessage(String.format("Error trying to load world '%s'!", worldName));
+            return;
        }
+        Command.broadcastCommandMessage(sender, String.format("Loaded world '%s'!", worldName));
    }
 }
@@ -1,91 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.Action;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-// This will contain all the properties that support the ADD/REMOVE
-// Anything not in here will only support the SET action
-
-/**
- * Used to modify various aspects of worlds.
- */
-public class ModifyAddCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifyAddCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World (Add a value)");
-        this.setCommandUsage("/mv modify " + ChatColor.GREEN + "add {VALUE} {PROPERTY}" + ChatColor.GOLD + " [WORLD] ");
-        this.setArgRange(2, 3);
-        this.addKey("mvm add");
-        this.addKey("mvmadd");
-        this.addKey("mv modify add");
-        this.addKey("mvmodify add");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "add " + ChatColor.GREEN + "sheep " + ChatColor.RED + "animals");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "add " + ChatColor.GREEN + "creeper " + ChatColor.RED + "monsters");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "add " + ChatColor.GREEN + "MyWorld " + ChatColor.RED + "worldblacklist");
-        this.setPermission("multiverse.core.modify.add", "Modify various aspects of worlds. See the help wiki for how to use this command properly. "
-                + "If you do not include a world, the current world will be used.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage(ChatColor.RED + "From the console, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String value = args.get(0);
-        String property = args.get(1);
-
-        if (args.size() == 2) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(2));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if (!ModifyCommand.validateAction(Action.Add, property)) {
-            sender.sendMessage("Sorry, you can't ADD to " + property);
-            sender.sendMessage("Please visit our Github Wiki for more information: http://goo.gl/4W8cY");
-            return;
-        }
-
-        if (world.addToVariable(property, value)) {
-            sender.sendMessage(ChatColor.GREEN + "Success! " + ChatColor.AQUA
-                    + value + ChatColor.WHITE + " was " + ChatColor.GREEN + "added to " + ChatColor.GREEN + property);
-        } else {
-            sender.sendMessage(value + " could not be added to " + property);
-        }
-    }
-}
@@ -1,88 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.Action;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Removes all values from a world-property.
- */
-public class ModifyClearCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifyClearCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World (Clear a property)");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " clear {PROPERTY}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(1, 2);
-        this.addKey("mvm clear");
-        this.addKey("mvmclear");
-        this.addKey("mv modify clear");
-        this.addKey("mvmodify clear");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "clear " + ChatColor.RED + "animals");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "clear " + ChatColor.RED + "monsters");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "clear " + ChatColor.RED + "worldblacklist");
-        this.setPermission("multiverse.core.modify.clear",
-                "Removes all values from a property. This will work on properties that contain lists.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-        if (args.size() == 1 && p == null) {
-            sender.sendMessage(ChatColor.RED + "From the console, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String property = args.get(0);
-
-        if (args.size() == 1) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(1));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if (!ModifyCommand.validateAction(Action.Clear, property)) {
-            sender.sendMessage("Sorry, you can't use CLEAR with " + property);
-            sender.sendMessage("Please visit our Github Wiki for more information: http://goo.gl/cgB2B");
-            return;
-        }
-        if (world.clearList(property)) {
-            sender.sendMessage(property + " was cleared. It contains 0 values now.");
-            sender.sendMessage(ChatColor.GREEN + "Success! " + ChatColor.AQUA + property + ChatColor.WHITE + " was "
-                    + ChatColor.GREEN + "CLEARED" + ChatColor.WHITE + ". It contains " + ChatColor.LIGHT_PURPLE + "0" + ChatColor.WHITE + " values now.");
-        } else {
-            sender.sendMessage(ChatColor.RED + "Error: " + ChatColor.GOLD + property
-                    + ChatColor.WHITE + " was " + ChatColor.GOLD + "NOT" + ChatColor.WHITE + " cleared.");
-        }
-    }
-
-}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,70 +7,228 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.enums.Action;
-import com.onarandombox.MultiverseCore.enums.AddProperties;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.ContentFilter;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
+import com.onarandombox.MultiverseCore.enums.EnglishChatColor;
+import com.onarandombox.MultiverseCore.exceptions.PropertyDoesNotExistException;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

+import java.util.Collection;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;

-/**
- * Used to modify various aspects of worlds.
- */
-public class ModifyCommand extends MultiverseCommand {
+@CommandAlias("mv")
+@Subcommand("modify")
+//TODO API: Think why properties method for MultiverseWorld is deprecated.
+public class ModifyCommand extends MultiverseCoreCommand {

    public ModifyCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Modify a World");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " {set|add|remove|clear} ...");
-        this.setArgRange(2, 3);
-        this.addKey("mvm");
-        this.addKey("mvmodify");
-        this.addKey("mv modify");
-        Map<String, Boolean> children = new HashMap<String, Boolean>();
-        children.put("multiverse.core.modify.add", true);
-        children.put("multiverse.core.modify.modify", true);
-        children.put("multiverse.core.modify.clear", true);
-        children.put("multiverse.core.modify.remove", true);
-        Permission modify = new Permission("multiverse.core.modify",
-                "Modify various aspects of worlds. It requires add/set/clear/remove. See the examples below", PermissionDefault.OP, children);
-        this.addCommandExample(ChatColor.AQUA + "/mv modify set ?");
-        this.addCommandExample(ChatColor.GREEN + "/mv modify add ?");
-        this.addCommandExample(ChatColor.BLUE + "/mv modify clear ?");
-        this.addCommandExample(ChatColor.RED + "/mv modify remove ?");
-        this.setPermission(modify);
    }

-    /**
-     * Validates the specified action.
-     *
-     * @param action The {@link Action}.
-     * @param property The property.
-     * @return Whether this action is valid.
-     */
-    protected static boolean validateAction(Action action, String property) {
-        if (action != Action.Set) {
-            try {
-                AddProperties.valueOf(property);
-                return true;
-            } catch (IllegalArgumentException e) {
-                return false;
+    @Subcommand("set")
+    @CommandPermission("multiverse.core.modify.set")
+    @Syntax("<property> <value> [world]")
+    @CommandCompletion("@setProperties @empty @MVWorlds")
+    @Description("Modify various aspects of worlds by setting a property. For more info; https://tinyurl.com/nehhzp6")
+    public void onModifySetCommand(@NotNull CommandSender sender,
+
+                                   @NotNull
+                                   @Syntax("<property>")
+                                   @Description("Property option key.")
+                                   @Flags("type=property")
+                                   @Conditions("validAddProperty:set") String property,
+
+                                   @NotNull
+                                   @Syntax("<value>")
+                                   @Description("New property value.")
+                                   @Flags("type=property value") String value,
+
+                                   @NotNull
+                                   @Syntax("[world]")
+                                   @Description("World that you want property change to apply.")
+                                   @Flags("other,defaultself") MultiverseWorld world) {
+
+        if ((property.equalsIgnoreCase("aliascolor")
+                || property.equalsIgnoreCase("color"))
+                && !EnglishChatColor.isValidAliasColor(value)) {
+            sender.sendMessage(String.format("%s'%s' is not a valid color. Please pick one of the following:",
+                    ChatColor.RED, value));
+            sender.sendMessage(EnglishChatColor.getAllColors());
+            return;
+        }
+
+        try {
+            if (!world.setPropertyValue(property, value)) {
+                sender.sendMessage(ChatColor.RED + world.getPropertyHelp(property));
+                return;
            }
        }
-        return false;
+        catch (PropertyDoesNotExistException e) {
+            sender.sendMessage(String.format("%sSorry, You can't set '%s%s%s'!", ChatColor.RED, ChatColor.GRAY, property, ChatColor.RED));
+            sender.sendMessage(String.format("Valid world-properties: %s", world.getAllPropertyNames()));
+            return;
+        }
+
+        sender.sendMessage(String.format("%sSuccess! %sProperty %s%s %swas set to %s%s%s.",
+                ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, property, ChatColor.WHITE, ChatColor.GREEN, value, ChatColor.WHITE));
+        saveWorldConfig();
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // This is just a place holder. The real commands are in:
-        // ModifyAddCommand
-        // ModifyRemoveCommand
-        // ModifySetCommand
-        // ModifyClearCommand
+    @Subcommand("add")
+    @CommandPermission("multiverse.core.modify.add")
+    @Syntax("<property> <value> [world]")
+    @CommandCompletion("@addProperties @empty @MVWorlds")
+    @Description("Modify various aspects of worlds by adding a property. For more info: https://tinyurl.com/nehhzp6")
+    public void onModifyAddCommand(@NotNull CommandSender sender,
+
+                                   @NotNull
+                                   @Syntax("<property>")
+                                   @Description("Property option key.")
+                                   @Flags("type=property")
+                                   @Conditions("validAddProperty:add") String property,
+
+                                   @NotNull
+                                   @Syntax("<value>")
+                                   @Description("Property value to add.")
+                                   @Flags("type=property value") String value,
+
+                                   @NotNull
+                                   @Syntax("[world]")
+                                   @Description("World that you want property change to apply.")
+                                   @Flags("other,defaultself") MultiverseWorld world) {
+
+        if (!world.addToVariable(property, value)) {
+            sender.sendMessage(String.format("%s %scould not be added to %s%s%s.",
+                    value, ChatColor.RED, ChatColor.AQUA, property, ChatColor.RED));
+            return;
+        }
+
+        sender.sendMessage(String.format("%sSuccess! %s%s%s was added to %s%s%s.",
+                ChatColor.GREEN, ChatColor.AQUA, value, ChatColor.WHITE, ChatColor.GREEN, property, ChatColor.WHITE));
+
+        saveWorldConfig();
+    }
+
+    @Subcommand("remove")
+    @CommandPermission("multiverse.core.modify.remove")
+    @Syntax("<property> <value> [world]")
+    @CommandCompletion("@addProperties @empty @MVWorlds")
+    @Description("Modify various aspects of worlds by removing a property. For more info: https://tinyurl.com/nehhzp6")
+    public void onModifyRemoveCommand(@NotNull CommandSender sender,
+
+                                      @NotNull
+                                      @Syntax("<property>")
+                                      @Description("Property option key.")
+                                      @Flags("type=property")
+                                      @Conditions("validAddProperty:remove") String property,
+
+                                      @NotNull
+                                      @Syntax("<value>")
+                                      @Description("Property value to remove.")
+                                      @Flags("type=property value") String value,
+
+                                      @NotNull
+                                      @Syntax("[world]")
+                                      @Description("World that you want property change to apply.")
+                                      @Flags("other,defaultself") MultiverseWorld world) {
+
+        if (!world.removeFromVariable(property, value)) {
+            sender.sendMessage(String.format("%sThere was an error removing %s%s%s from %s%s%s!",
+                    ChatColor.RED, ChatColor.GRAY, value, ChatColor.RED, ChatColor.GRAY, property, ChatColor.RED));
+            return;
+        }
+
+        sender.sendMessage(String.format("%sSuccess! %s%s%s was %sremoved %sfrom %s%s%s.",
+                ChatColor.GREEN, ChatColor.AQUA, value, ChatColor.WHITE, ChatColor.RED, ChatColor.WHITE, ChatColor.GREEN, property, ChatColor.WHITE));
+
+        saveWorldConfig();
+    }
+
+    @Subcommand("clear")
+    @CommandPermission("multiverse.core.modify.clear")
+    @Syntax("<property> <value> [world]")
+    @CommandCompletion("@addProperties @empty @MVWorlds")
+    @Description("Modify various aspects of worlds by clearing a property. For more info: https://tinyurl.com/nehhzp6")
+    public void onModifyClearCommand(@NotNull CommandSender sender,
+
+                                     @NotNull
+                                     @Syntax("<property>")
+                                     @Description("Property option key.")
+                                     @Flags("type=property") @Conditions("validAddProperty:clear") String property,
+
+                                     @NotNull
+                                     @Syntax("[world]")
+                                     @Description("World that you want property be cleared.")
+                                     @Flags("other,defaultself") MultiverseWorld world) {
+
+        if (!world.clearList(property)) {
+            sender.sendMessage(String.format("%sThere was an error clearing %s%s%s.",
+                    ChatColor.RED, ChatColor.GOLD, property, ChatColor.RED));
+        }
+
+        sender.sendMessage(String.format("%s%s%s was cleared. It contains 0 values now.",
+                ChatColor.GOLD, property, ChatColor.WHITE));
+
+        saveWorldConfig();
+    }
+
+    @Subcommand("list")
+    @CommandPermission("multiverse.core.modify.list")
+    @Syntax("[world] [filter]")
+    @CommandCompletion("@MVWorlds")
+    @Description("Show properties available to set.")
+    public void onModifyListCommand(@NotNull CommandSender sender,
+
+                                     @NotNull
+                                     @Syntax("[world]")
+                                     @Description("World that you want to see current property values set.")
+                                     @Flags("other,defaultself,fallbackself") MultiverseWorld world,
+
+                                     @NotNull ContentFilter filter) {
+
+        new ContentDisplay.Builder<Map<String, Object>>()
+                .sender(sender)
+                .header("%s===[ Property Values for %s%s ]===", ChatColor.GOLD, world.getColoredWorldString(), ChatColor.GOLD)
+                .contents(generateModifyList(world))
+                .emptyMessage("No properties found.")
+                .displayHandler(DisplayHandlers.INLINE_MAP)
+                .filter(filter)
+                .display();
+    }
+
+    private Map<String, Object> generateModifyList(MultiverseWorld world) {
+        Collection<String> properties = world.getAllPropertyTypes();
+        Map<String, Object> propMap = new HashMap<>(properties.size());
+        for (String property : properties) {
+            String value;
+            try {
+                value = world.getPropertyValue(property);
+            } catch (PropertyDoesNotExistException ignored) {
+                value = String.format("%s!!INAVLID!!", ChatColor.RED);
+            }
+            propMap.put(property, value);
+        }
+        return propMap;
+    }
+
+    private void saveWorldConfig() {
+        if (!this.plugin.saveWorldConfig()) {
+            throw new InvalidCommandArgument("There was an issue saving worlds.yml! Your changes will only be temporary.", false);
+        }
    }
 }
@@ -1,93 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.Action;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Removes values from a world-property.
- */
-public class ModifyRemoveCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifyRemoveCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Modify a World (Remove a value)");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " remove {PROPERTY} {VALUE}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(2, 3);
-        this.addKey("mvm remove");
-        this.addKey("mvmremove");
-        this.addKey("mv modify remove");
-        this.addKey("mvmodify remove");
-        this.addKey("mvm delete");
-        this.addKey("mvmdelete");
-        this.addKey("mv modify delete");
-        this.addKey("mvmodify delete");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "remove " + ChatColor.GREEN + "sheep " + ChatColor.RED + "animals");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "remove " + ChatColor.GREEN + "creeper " + ChatColor.RED + "monsters");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "remove " + ChatColor.GREEN + "MyWorld " + ChatColor.RED + "worldblacklist");
-        this.setPermission("multiverse.core.modify.remove", "Modify various aspects of worlds. See the help wiki for how to use this command properly. "
-                + "If you do not include a world, the current world will be used.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage(ChatColor.RED + "From the console, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String value = args.get(0);
-        String property = args.get(1);
-
-        if (args.size() == 2) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(2));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if (!ModifyCommand.validateAction(Action.Remove, property)) {
-            sender.sendMessage("Sorry, you can't REMOVE anything from" + property);
-            sender.sendMessage("Please visit our Github Wiki for more information: http://goo.gl/4W8cY");
-            return;
-        }
-        if (world.removeFromVariable(property, value)) {
-            sender.sendMessage(ChatColor.GREEN + "Success! " + ChatColor.AQUA + value + ChatColor.WHITE
-                    + " was " + ChatColor.RED + "removed from " + ChatColor.GREEN + property);
-        } else {
-            sender.sendMessage(ChatColor.RED + "There was an error removing " + ChatColor.GRAY
-                    + value + ChatColor.WHITE + " from " + ChatColor.GOLD + property);
-        }
-    }
-
-}
@@ -1,123 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
-import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.enums.EnglishChatColor;
-import com.onarandombox.MultiverseCore.exceptions.PropertyDoesNotExistException;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Used to set world-properties.
- */
-public class ModifySetCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
-
-    public ModifySetCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.worldManager = this.plugin.getMVWorldManager();
-        this.setName("Modify a World (Set a value)");
-        this.setCommandUsage("/mv modify" + ChatColor.GREEN + " set {PROPERTY} {VALUE}" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(1, 3);
-        this.addKey("mvm set");
-        this.addKey("mvmset");
-        this.addKey("mv modify set");
-        this.addKey("mvmodify set");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "mode " + ChatColor.RED + "creative");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "animals " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "monsters " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "alias " + ChatColor.RED + "MyWorld");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "color " + ChatColor.RED + "green");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "curr " + ChatColor.RED + "3");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "price " + ChatColor.RED + "5");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "scale " + ChatColor.RED + "1.2");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "memory " + ChatColor.RED + "true");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "diff " + ChatColor.RED + "hard");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "hunger " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "hidden " + ChatColor.RED + "true");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "pvp " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "heal " + ChatColor.RED + "true");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "adjustspawn " + ChatColor.RED + "false");
-        this.addCommandExample("/mvm " + ChatColor.GOLD + "set " + ChatColor.GREEN + "spawn");
-        this.setPermission("multiverse.core.modify.set", "Modify various aspects of worlds. See the help wiki for how to use this command properly. "
-                + "If you do not include a world, the current world will be used.", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Special case for spawn:
-        if (args.size() == 1) {
-            if (!(sender instanceof Player)) {
-                sender.sendMessage("You must be a player to set the" + ChatColor.GREEN + " spawn");
-                return;
-            }
-            if (args.get(0).equalsIgnoreCase("spawn")) {
-                SetSpawnCommand c = new SetSpawnCommand(this.plugin);
-                c.setWorldSpawn(sender);
-
-            } else {
-                sender.sendMessage("Spawn is the only param with no" + ChatColor.GREEN + " VALUE");
-                sender.sendMessage("Type " + ChatColor.GREEN + "/mv modify ?" + ChatColor.WHITE + " For help.");
-            }
-            return;
-        }
-        // We NEED a world from the command line
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (args.size() == 2 && p == null) {
-            sender.sendMessage("From the command line, WORLD is required.");
-            sender.sendMessage(this.getCommandDesc());
-            sender.sendMessage(this.getCommandUsage());
-            sender.sendMessage("Nothing changed.");
-            return;
-        }
-
-        MultiverseWorld world;
-        String value = args.get(1);
-        String property = args.get(0);
-
-        if (args.size() == 2) {
-            world = this.worldManager.getMVWorld(p.getWorld().getName());
-        } else {
-            world = this.worldManager.getMVWorld(args.get(2));
-        }
-
-        if (world == null) {
-            sender.sendMessage("That world does not exist!");
-            return;
-        }
-
-        if ((property.equalsIgnoreCase("aliascolor") || property.equalsIgnoreCase("color")) && !world.isValidAliasColor(value)) {
-            sender.sendMessage(value + " is not a valid color. Please pick one of the following:");
-            sender.sendMessage(EnglishChatColor.getAllColors());
-            return;
-        }
-        try {
-            if (world.setProperty(property, value, sender)) {
-                sender.sendMessage(ChatColor.GREEN + "Success!" + ChatColor.WHITE + " Property " + ChatColor.AQUA + property
-                        + ChatColor.WHITE + " was set to " + ChatColor.GREEN + value);
-            } else {
-                sender.sendMessage(world.getProperty(property, Object.class).getHelp());
-            }
-        } catch (PropertyDoesNotExistException e) {
-            sender.sendMessage(ChatColor.RED + "Sorry, You can't set: '" + ChatColor.GRAY + property + ChatColor.RED + "'");
-            // TODO: Display the list
-            sender.sendMessage(ChatColor.GOLD + "For a full list of thingys, see our wiki.");
-        }
-    }
-}
@@ -1,40 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.utils.MVMessaging;
-import com.pneumaticraft.commandhandler.Command;
-import org.bukkit.command.CommandSender;
-
-import java.util.List;
-
-/**
- * A generic Multiverse-command.
- */
-public abstract class MultiverseCommand extends Command {
-
-    /**
-     * The reference to the core.
-     */
-    protected MultiverseCore plugin;
-    /**
-     * The reference to {@link MVMessaging}.
-     */
-    protected MVMessaging messaging;
-
-    public MultiverseCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.plugin = plugin;
-        this.messaging = this.plugin.getMessaging();
-    }
-
-    @Override
-    public abstract void runCommand(CommandSender sender, List<String> args);
-
-}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -8,19 +8,13 @@
 package com.onarandombox.MultiverseCore.commands;

 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.MultiverseCommand;

-/**
- * A generic paginated Multiverse-command.
- * @param <T> The type of items on the page.
- */
-public abstract class PaginatedCoreCommand<T> extends PaginatedCommand<T> {
-    /**
-     * The reference to the core.
-     */
-    protected MultiverseCore plugin;
+public abstract class MultiverseCoreCommand extends MultiverseCommand {

-    public PaginatedCoreCommand(MultiverseCore plugin) {
-        super(plugin);
+    protected final MultiverseCore plugin;
+
+    protected MultiverseCoreCommand(MultiverseCore plugin) {
        this.plugin = plugin;
    }
 }
@@ -1,164 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.pneumaticraft.commandhandler.Command;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.java.JavaPlugin;
-
-import java.util.List;
-
-/**
- * A generic paginated command.
- * @param <T> The type of items on the page.
- */
-public abstract class PaginatedCommand<T> extends Command {
-    private static final int DEFAULT_ITEMS_PER_PAGE = 9;
-    /**
-     * The number of items per page.
-     */
-    protected int itemsPerPage = DEFAULT_ITEMS_PER_PAGE;
-
-    public PaginatedCommand(JavaPlugin plugin) {
-        super(plugin);
-    }
-
-    /**
-     * Set the number of items per page.
-     *
-     * @param items The new number of items per page.
-     */
-    protected void setItemsPerPage(int items) {
-        itemsPerPage = items;
-    }
-
-    /**
-     * Gets filtered items.
-     * @param availableItems All available items.
-     * @param filter The filter-{@link String}.
-     * @return A list of items that match the filter.
-     */
-    protected abstract List<T> getFilteredItems(List<T> availableItems, String filter);
-
-    /**
-     * Constructs a single string from a list of strings.
-     *
-     * @param list The {@link List} of strings.
-     * @return A single {@link String}.
-     */
-    protected String stitchThisString(List<String> list) {
-        StringBuilder builder = new StringBuilder();
-        for (String s : list) {
-            builder.append(s);
-            builder.append(' ');
-        }
-        return builder.toString();
-    }
-
-    /**
-     * Shows a page.
-     *
-     * @param page The number of the page to show.
-     * @param sender The {@link CommandSender} that wants to see the page.
-     * @param cmds The items that should be displayed on the page.
-     */
-    protected void showPage(int page, CommandSender sender, List<T> cmds) {
-        // Ensure the page is at least 1.
-        page = (page <= 0) ? 1 : page;
-        int start = (page - 1) * itemsPerPage;
-        int end = start + itemsPerPage;
-
-        for (int i = start; i < end; i++) {
-            // For consistancy, print some extra lines if it's a player:
-            if (i < cmds.size()) {
-                sender.sendMessage(this.getItemText(cmds.get(i)));
-            } else if (sender instanceof Player) {
-                sender.sendMessage(" ");
-            }
-        }
-    }
-
-    /**
-     * Converts an item into a string.
-     *
-     * @param item The item.
-     * @return A {@link String}.
-     */
-    protected abstract String getItemText(T item);
-
-    /**
-     * Constructs a {@link FilterObject} from a {@link List} of arguments.
-     *
-     * @param args The {@link List} of arguments.
-     * @return The {@link FilterObject}.
-     */
-    protected FilterObject getPageAndFilter(List<String> args) {
-        int page = 1;
-
-        String filter = "";
-
-        if (args.size() == 0) {
-            filter = "";
-            page = 1;
-        } else if (args.size() == 1) {
-            try {
-                page = Integer.parseInt(args.get(0));
-            } catch (NumberFormatException ex) {
-                filter = args.get(0);
-                page = 1;
-            }
-        } else if (args.size() == 2) {
-            filter = args.get(0);
-            try {
-                page = Integer.parseInt(args.get(1));
-            } catch (NumberFormatException ex) {
-                page = 1;
-            }
-        }
-        return new FilterObject(page, filter);
-    }
-
-    /**
-     * "Key-Object" containing information about the page and the filter that were requested.
-     */
-    protected class FilterObject {
-        private Integer page;
-        private String filter;
-
-        public FilterObject(Integer page, String filter) {
-            this.page = page;
-            this.filter = filter;
-        }
-
-        /**
-         * Gets the page.
-         * @return The page.
-         */
-        public Integer getPage() {
-            return this.page;
-        }
-
-        /**
-         * Sets the page.
-         *
-         * @param page The new page.
-         */
-        public void setPage(int page) {
-            this.page = page;
-        }
-
-        /**
-         * Gets the filter.
-         * @return The filter.
-         */
-        public String getFilter() {
-            return this.filter;
-        }
-    }
-}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,86 +7,77 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Split;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.utils.PurgeWorlds;
-import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;

-/**
- * Removes a type of mob from a world.
- */
-public class PurgeCommand extends MultiverseCommand {
-    private MVWorldManager worldManager;
+@CommandAlias("mv")
+public class PurgeCommand extends MultiverseCoreCommand {

    public PurgeCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Purge World of Creatures");
-        this.setCommandUsage("/mv purge" + ChatColor.GOLD + " [WORLD|all] " + ChatColor.GREEN + "{all|animals|monsters|MOBNAME}");
-        this.setArgRange(1, 2);
-        this.addKey("mvpurge");
-        this.addKey("mv purge");
-        this.addCommandExample("/mv purge " + ChatColor.GREEN + "all");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "all " + ChatColor.GREEN + "all");
-        this.addCommandExample("/mv purge " + ChatColor.GREEN + "monsters");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "all " + ChatColor.GREEN + "animals");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "MyWorld " + ChatColor.GREEN + "squid");
-        this.addCommandExample("/mv purge " + ChatColor.GOLD + "MyWorld_nether " + ChatColor.GREEN + "ghast");
-        this.setPermission("multiverse.core.purge", "Removed the specified type of mob from the specified world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-        if (args.size() == 1 && p == null) {
-            sender.sendMessage("This command requires a WORLD when being run from the console!");
-            sender.sendMessage(this.getCommandUsage());
-            return;
-        }
-        String worldName = null;
-        String deathName = null;
-        if (args.size() == 1) {
-            worldName = p.getWorld().getName();
-            deathName = args.get(0);
-        } else {
-            worldName = args.get(0);
-            deathName = args.get(1);
-        }
+    @Subcommand("purgeall")
+    @CommandPermission("multiverse.core.purge.all")
+    @Syntax("<all|animals|monsters|mobname>")
+    @CommandCompletion("all|animals|monsters|@livingEntities")
+    @Description("Removed the specified type of mob from all worlds.")
+    public void onPurgeAllCommand(@NotNull CommandSender sender,

-        if (!worldName.equalsIgnoreCase("all") && !this.worldManager.isMVWorld(worldName)) {
-            ((MultiverseCore) this.plugin).showNotMVWorldMessage(sender, worldName);
-            sender.sendMessage("It cannot be purged.");
-            return;
-        }
+                                  @NotNull
+                                  @Syntax("<entities>")
+                                  @Description("Entity types that you want to remove from all worlds.")
+                                  @Split(",") String[] targetEntities) {

-        List<MultiverseWorld> worldsToRemoveEntitiesFrom = new ArrayList<MultiverseWorld>();
-        // Handle all case any user who names a world "all" should know better...
-        if (worldName.equalsIgnoreCase("all")) {
-            worldsToRemoveEntitiesFrom.addAll(this.worldManager.getMVWorlds());
-        } else {
-            worldsToRemoveEntitiesFrom.add(this.worldManager.getMVWorld(worldName));
-        }
+        doPurge(sender, this.plugin.getMVWorldManager().getMVWorlds(), targetEntities);
+    }

-        PurgeWorlds purger = this.worldManager.getWorldPurger();
-        ArrayList<String> thingsToKill = new ArrayList<String>();
-        if (deathName.equalsIgnoreCase("all") || deathName.equalsIgnoreCase("animals") || deathName.equalsIgnoreCase("monsters")) {
-            thingsToKill.add(deathName.toUpperCase());
-        } else {
-            Collections.addAll(thingsToKill, deathName.toUpperCase().split(","));
-        }
-        for (MultiverseWorld w : worldsToRemoveEntitiesFrom) {
-            purger.purgeWorld(sender, w, thingsToKill, false, false);
-        }
+    @Subcommand("purge")
+    @CommandPermission("multiverse.core.purge")
+    @Syntax("<all|animals|monsters|mobname>")
+    @CommandCompletion("@MVWorlds|all|animals|monsters|@livingEntities all|animals|monsters|@livingEntities")
+    @Description("Removed the specified type of mob from the specified world.")
+    public void onPurgeCommand(@NotNull CommandSender sender,
+
+                               @NotNull
+                               @Syntax("[world]")
+                               @Description("World that you want to remove entities.")
+                               @Flags("other,defaultself,fallbackself") MultiverseWorld world,
+
+                               @NotNull
+                               @Syntax("<entities>")
+                               @Description("Entity types that you want to remove from a world.")
+                               @Split(",") String[] targetEntities) {
+
+        doPurge(sender, Collections.singleton(world), targetEntities);
+    }
+
+    private void doPurge(@NotNull CommandSender sender,
+                         @NotNull Collection<MultiverseWorld> targetWorlds,
+                         @NotNull String[] targetEntities) {
+
+        List<String> thingsToKill = Arrays.stream(targetEntities)
+                .map(String::toUpperCase)
+                .collect(Collectors.toList());
+
+        targetWorlds.forEach(w -> this.plugin.getMVWorldManager()
+                .getTheWorldPurger()
+                .purgeWorld(w, thingsToKill, false, false, sender));
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,47 +7,75 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagResult;
+import com.onarandombox.MultiverseCore.commandtools.flag.CoreFlags;
+import com.onarandombox.MultiverseCore.commandtools.queue.QueuedCommand;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;

-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Regenerates a world.
- */
-public class RegenCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class RegenCommand extends MultiverseCoreCommand {

    public RegenCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Regenerates a World");
-        this.setCommandUsage("/mv regen" + ChatColor.GREEN + " {WORLD}" + ChatColor.GOLD + " [-s [SEED]]");
-        this.setArgRange(1, 3);
-        this.addKey("mvregen");
-        this.addKey("mv regen");
-        this.addCommandExample("You can use the -s with no args to get a new seed:");
-        this.addCommandExample("/mv regen " + ChatColor.GREEN + "MyWorld" + ChatColor.GOLD + " -s");
-        this.addCommandExample("or specifiy a seed to get that one:");
-        this.addCommandExample("/mv regen " + ChatColor.GREEN + "MyWorld" + ChatColor.GOLD + " -s" + ChatColor.AQUA + " gargamel");
-        this.setPermission("multiverse.core.regen", "Regenerates a world on your server. The previous state will be lost "
-                + ChatColor.RED + "PERMANENTLY.", PermissionDefault.OP);
+        this.setFlagGroup(FlagGroup.of(CoreFlags.RANDOM_SEED));
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Boolean useseed = (!(args.size() == 1));
-        Boolean randomseed = (args.size() == 2 && args.get(1).equalsIgnoreCase("-s"));
-        String seed = (args.size() == 3) ? args.get(2) : "";
+    @Subcommand("regen")
+    @CommandPermission("multiverse.core.regen")
+    @Syntax("<world> [-s [seed]]")
+    @CommandCompletion("@MVWorlds @worldFlags:-s")
+    @Description("Regenerates a world on your server. The previous state will be lost PERMANENTLY.")
+    public void onRegenCommand(@NotNull CommandSender sender,

-        Class<?>[] paramTypes = {String.class, Boolean.class, Boolean.class, String.class};
-        List<Object> objectArgs = new ArrayList<Object>();
-        objectArgs.add(args.get(0));
-        objectArgs.add(useseed);
-        objectArgs.add(randomseed);
-        objectArgs.add(seed);
-        this.plugin.getCommandHandler().queueCommand(sender, "mvregen", "regenWorld", objectArgs,
-                paramTypes, ChatColor.GREEN + "World Regenerated!", ChatColor.RED + "World could NOT be regenerated!");
+                               @NotNull
+                               @Syntax("<world>")
+                               @Description("World that you want to regen.")
+                               @Flags("other") MultiverseWorld world,
+
+                               @Nullable
+                               @Syntax("[-s [seed]]")
+                               @Description("Other world settings. See: http://gg.gg/nn8lk")
+                               String[] flagsArray) {
+
+        FlagResult flags = this.getFlagGroup().calculateResult(flagsArray);
+
+        this.plugin.getMVCommandManager().getQueueManager().addToQueue(new QueuedCommand.Builder()
+                .sender(sender)
+                .action(regenRunnable(sender, world, flags))
+                .prompt("Are you sure you want to regen world '%s'?", world.getColoredWorldString())
+                .build()
+        );
+    }
+
+    private Runnable regenRunnable(@NotNull CommandSender sender,
+                                   @NotNull MultiverseWorld world,
+                                   @NotNull FlagResult flags) {
+
+        return () -> {
+            sender.sendMessage(String.format("Regening world '%s'...", world.getName()));
+
+            //TODO: API should allow regen of unloaded worlds.
+            sender.sendMessage((this.plugin.getMVWorldManager().regenWorld(
+                    world.getName(),
+                    !flags.isDefaulted(CoreFlags.RANDOM_SEED),
+                    !flags.isByUserInput(CoreFlags.RANDOM_SEED),
+                    flags.getValue(CoreFlags.RANDOM_SEED))
+            )
+                    ? String.format("%sWorld Regenerated!", ChatColor.GREEN)
+                    : String.format("%sWorld could not be regenerated!", ChatColor.RED));
+        };
    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,51 +7,44 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import com.onarandombox.MultiverseCore.event.MVConfigReloadEvent;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

 import java.util.ArrayList;
 import java.util.List;

-/**
- * Reloads worlds.yml and config.yml.
- */
-public class ReloadCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class ReloadCommand extends MultiverseCoreCommand {

-    public ReloadCommand(MultiverseCore plugin) {
+    public ReloadCommand(@NotNull MultiverseCore plugin) {
        super(plugin);
-        this.setName("Reload Configs");
-        this.setCommandUsage("/mv reload");
-        this.setArgRange(0, 0);
-        this.addKey("mvreload");
-        this.addKey("mv reload");
-        this.addCommandExample("/mv reload");
-        this.setPermission("multiverse.core.reload", "Reloads worlds.yml and config.yml.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
+    @Subcommand("reload")
+    @CommandPermission("multiverse.core.reload")
+    @Description("Reloads config files for all multiverse modules.")
+    public void onReloadCommand(@NotNull CommandSender sender) {
        sender.sendMessage(ChatColor.GOLD + "Reloading all Multiverse Plugin configs...");
        this.plugin.loadConfigs();
        this.plugin.getAnchorManager().loadAnchors();
        this.plugin.getMVWorldManager().loadWorlds(true);

-        List<String> configsLoaded = new ArrayList<String>();
+        List<String> configsLoaded = new ArrayList<>();
        configsLoaded.add("Multiverse-Core - config.yml");
        configsLoaded.add("Multiverse-Core - worlds.yml");
        configsLoaded.add("Multiverse-Core - anchors.yml");
-        // Create the event
+
        MVConfigReloadEvent configReload = new MVConfigReloadEvent(configsLoaded);
-        // Fire it off
        this.plugin.getServer().getPluginManager().callEvent(configReload);
-        for (String s : configReload.getAllConfigsLoaded()) {
-            sender.sendMessage(s);
-        }

-        sender.sendMessage(ChatColor.GREEN + "Reload Complete!");
+        configReload.getAllConfigsLoaded().forEach(sender::sendMessage);
+        sender.sendMessage(String.format("%sReload Complete!", ChatColor.GREEN));
    }
-
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,36 +7,43 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Single;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-
-/**
- * Unloads a world and removes it from the config.
- */
-public class RemoveCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class RemoveCommand extends MultiverseCoreCommand {

    public RemoveCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Remove World");
-        this.setCommandUsage("/mv remove" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvremove");
-        this.addKey("mv remove");
-        this.addCommandExample("/mv remove " + ChatColor.GREEN + "MyWorld");
-        this.setPermission("multiverse.core.remove",
-                "Unloads a world from Multiverse and removes it from worlds.yml, this does NOT DELETE the world folder.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (this.plugin.getMVWorldManager().removeWorldFromConfig(args.get(0))) {
-            sender.sendMessage("World removed from config!");
-        } else {
-            sender.sendMessage("Error trying to remove world from config!");
-        }
+    @Subcommand("remove")
+    @CommandPermission("multiverse.core.remove")
+    @CommandCompletion("@MVWorlds|@unloadedWorlds")
+    @Syntax("<world>")
+    @Description("Unloads a world from Multiverse and removes it from worlds.yml, this does NOT DELETE the world folder.")
+    public void onRemoveCommand(@NotNull CommandSender sender,
+
+                                @NotNull
+                                @Syntax("<world>")
+                                @Description("World you want to remove from mv's knowledge.")
+                                @Flags("type=world name")
+                                @Conditions("isWorldInConfig")
+                                @Single String worldName) {
+
+        sender.sendMessage((this.plugin.getMVWorldManager().removeWorldFromConfig(worldName))
+                ? String.format("World '%s' is removed from config!", worldName)
+                : String.format("%sError trying to remove world from config!", ChatColor.RED));
    }
 }
@@ -0,0 +1,25 @@
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.annotation.CommandAlias;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+public class RootCommand extends MultiverseCoreCommand {
+
+    public RootCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @CommandAlias("mv")
+    public void onRootCommand(@NotNull CommandSender sender) {
+        this.plugin.getMVCommandManager().showPluginInfo(
+                sender,
+                this.plugin.getDescription(),
+                ColorAlternator.with(ChatColor.GOLD, ChatColor.YELLOW),
+                "mv"
+        );
+    }
+}
@@ -0,0 +1,63 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commands;
+
+import buscript.Buscript;
+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.context.RequiredPlayer;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.File;
+
+@CommandAlias("mv")
+public class ScriptCommand extends MultiverseCoreCommand {
+
+    public ScriptCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @Subcommand("script")
+    @CommandPermission("multiverse.core.script")
+    @Syntax("<script> <player>")
+    @CommandCompletion("@scripts @players")
+    @Description("Runs a script.")
+    public void onScriptCommand(@NotNull CommandSender sender,
+
+                                @NotNull
+                                @Syntax("<script>")
+                                @Description("Script name that you want to run.")
+                                String targetScript,
+
+                                @NotNull
+                                @Syntax("<player>")
+                                @Description("Player that you want to execute the script on.")
+                                RequiredPlayer player) {
+
+        Buscript scriptAPI = this.plugin.getScriptAPI();
+        if (scriptAPI == null) {
+            throw new InvalidCommandArgument("Buscript failed to load while server was starting! Scripts cannot be run.", false);
+        }
+
+        File file = new File(scriptAPI.getScriptFolder(), targetScript);
+        if (!file.exists()) {
+            throw new InvalidCommandArgument("That script file does not exist in the Multiverse-Core scripts directory!");
+        }
+
+        scriptAPI.executeScript(file, targetScript, player.get());
+        sender.sendMessage(String.format("Script '%s%s%s' finished!", ChatColor.GOLD, file.getName(), ChatColor.WHITE));
+    }
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,71 +7,164 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.BaseCommand;
+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Optional;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.BlockSafety;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
-import com.onarandombox.MultiverseCore.utils.BlockSafety;
-import com.onarandombox.MultiverseCore.utils.LocationManipulation;
 import org.bukkit.ChatColor;
 import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;

-import java.util.List;
+public class SetSpawnCommand extends MultiverseCoreCommand {

-/**
- * Sets the spawn for a world.
- */
-public class SetSpawnCommand extends MultiverseCommand {
    public SetSpawnCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Set World Spawn");
-        this.setCommandUsage("/mv setspawn");
-        this.setArgRange(0, 0);
-        this.addKey("mvsetspawn");
-        this.addKey("mvss");
-        this.addKey("mv set spawn");
-        this.addKey("mv setspawn");
-        this.addKey("mvset spawn");
-        this.addCommandExample("/mv set spawn");
-        this.setPermission("multiverse.core.spawn.set", "Sets the spawn for the current world.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        setWorldSpawn(sender);
+    @CommandAlias("mv")
+    public class SetSpawn extends BaseCommand {
+
+        @Subcommand("setspawn")
+        @CommandPermission("multiverse.core.spawn.set")
+        @Syntax("[world x y z [yaw pitch]]")
+        @CommandCompletion("@MVWorlds @location:x @location:y @location:z @location:yaw @location:pitch")
+        @Description("Sets the spawn for the current world.")
+        public void onSetSpawnCommand(@NotNull CommandSender sender,
+                                      @Nullable @Optional Player player,
+
+                                      @NotNull
+                                      @Syntax("[world x y z [yaw pitch]]")
+                                      @Description("New location of spawn.")
+                                      @Flags("other,defaultself") MultiverseWorld world,
+
+                                      @Nullable @Optional Double x,
+                                      @Nullable @Optional Double y,
+                                      @Nullable @Optional Double z,
+                                      @Nullable @Optional Float yaw,
+                                      @Nullable @Optional Float pitch) {
+
+            doSpawnSet(sender, world, parseLocation(player, world, x, y, z, yaw, pitch));
+        }
+
+        @Subcommand("modify set spawn")
+        @CommandPermission("multiverse.core.spawn.set")
+        @Syntax("[world x y z [yaw pitch]]")
+        @CommandCompletion("@MVWorlds @location:x @location:y @location:z @location:yaw @location:pitch")
+        @Description("Sets the spawn for the current world.")
+        public void onModifySetSpawnCommand(@NotNull CommandSender sender,
+                                            @Nullable @Optional Player player,
+
+                                            @NotNull
+                                            @Syntax("[world x y z [yaw pitch]]")
+                                            @Description("New location of spawn.")
+                                            @Flags("other,defaultself") MultiverseWorld world,
+
+                                            @Nullable @Optional Double x,
+                                            @Nullable @Optional Double y,
+                                            @Nullable @Optional Double z,
+                                            @Nullable @Optional Float yaw,
+                                            @Nullable @Optional Float pitch) {
+
+            doSpawnSet(sender, world, parseLocation(player, world, x, y, z, yaw, pitch));
+        }
    }

-    /**
-     * Does the actual spawn-setting-work.
-     *
-     * @param sender The {@link CommandSender} that's setting the spawn.
-     */
-    protected void setWorldSpawn(CommandSender sender) {
-        if (sender instanceof Player) {
-            Player p = (Player) sender;
-            Location l = p.getLocation();
-            World w = p.getWorld();
-            MultiverseWorld foundWorld = this.plugin.getMVWorldManager().getMVWorld(w.getName());
-            if (foundWorld != null) {
-                foundWorld.setSpawnLocation(p.getLocation());
-                BlockSafety bs = new BlockSafety();
-                if (!bs.playerCanSpawnHereSafely(p.getLocation()) && foundWorld.getAdjustSpawn()) {
-                    sender.sendMessage("It looks like that location would normally be unsafe. But I trust you.");
-                    sender.sendMessage("I'm turning off the Safe-T-Teleporter for spawns to this world.");
-                    sender.sendMessage("If you want this turned back on just do:");
-                    sender.sendMessage(ChatColor.AQUA + "/mvm set adjustspawn true " + foundWorld.getAlias());
-                    foundWorld.setAdjustSpawn(false);
-                }
-                sender.sendMessage("Spawn was set to: " + LocationManipulation.strCoords(p.getLocation()));
-            } else {
-                w.setSpawnLocation(l.getBlockX(), l.getBlockY(), l.getBlockZ());
-                sender.sendMessage("Multiverse does not know about this world, only X,Y and Z set. Please import it to set the spawn fully (Pitch/Yaws).");
+    @CommandAlias("mvsetspawn")
+    public class AliasSetSpawn extends BaseCommand {
+
+        @CommandAlias("mvsetspawn")
+        @CommandPermission("multiverse.core.spawn.set")
+        @Syntax("[world x y z [yaw pitch]]")
+        @CommandCompletion("@MVWorlds @location:x @location:y @location:z @location:yaw @location:pitch @empty")
+        @Description("Sets the spawn for the current world.")
+        public void onAliasSetSpawnCommand(@NotNull CommandSender sender,
+                                           @Nullable @Optional Player player,
+
+                                           @NotNull
+                                           @Syntax("[world x y z [yaw pitch]]")
+                                           @Description("New location of spawn.")
+                                           @Flags("other,defaultself") MultiverseWorld world,
+
+                                           @Nullable @Optional Double x,
+                                           @Nullable @Optional Double y,
+                                           @Nullable @Optional Double z,
+                                           @Nullable @Optional Float yaw,
+                                           @Nullable @Optional Float pitch) {
+            doSpawnSet(sender, world, parseLocation(player, world, x, y, z, yaw, pitch));
+        }
+    }
+
+    @NotNull
+    private Location parseLocation(@Nullable Player player,
+                                   @NotNull MultiverseWorld world,
+                                   @Nullable Double x,
+                                   @Nullable Double y,
+                                   @Nullable Double z,
+                                   @Nullable Float yaw,
+                                   @Nullable Float pitch) {
+
+        if (x == null) {
+            if (player == null) {
+                throw new InvalidCommandArgument("You need to specify a location from console.");
            }
+            return player.getLocation();
+        }
+        if (y == null) {
+            throw new InvalidCommandArgument("You need to specify y and z axis as well.");
+        }
+        if (z == null) {
+            throw new InvalidCommandArgument("You need to specify z axis as well.");
+        }
+        if (yaw == null) {
+            return new Location(world.getCBWorld(), x, y, z);
+        }
+        if (pitch == null) {
+            throw new InvalidCommandArgument("You need to specify pitch as well.");
+        }

-        } else {
-            sender.sendMessage("You cannot use this command from the console.");
+        return new Location(world.getCBWorld(), x, y, z, yaw, pitch);
+    }
+
+    private void doSpawnSet(@NotNull CommandSender sender,
+                            @NotNull MultiverseWorld world,
+                            @NotNull Location location) {
+
+        World bukkitWorld = location.getWorld();
+        if (bukkitWorld == null) {
+            sender.sendMessage("No world found for the spawn location your tried to set.");
+            return;
+        }
+
+        world.setSpawnLocation(location);
+        BlockSafety blockSafety = this.plugin.getBlockSafety();
+        if (!blockSafety.playerCanSpawnHereSafely(location) && world.getAdjustSpawn()) {
+            sender.sendMessage("It looks like that location would normally be unsafe. But I trust you.");
+            sender.sendMessage("I'm turning off the Safe-T-Teleporter for spawns to this world.");
+            sender.sendMessage(String.format("If you want turn this back on, just do %s/mv modify set adjustspawn true %s", ChatColor.AQUA, world.getName()));
+            world.setAdjustSpawn(false);
+        }
+
+        sender.sendMessage((sender instanceof Player && ((Player) sender).getWorld().equals(world.getCBWorld()))
+                ? "Spawn of this world is set to:"
+                : String.format("Spawn for %s is set to:",  world.getColoredWorldString()));
+
+        sender.sendMessage(plugin.getLocationManipulation().strCoords(location));
+
+        if (!plugin.saveWorldConfig()) {
+            sender.sendMessage(String.format("%sThere was an issue saving worlds.yml!  Your changes will only be temporary!", ChatColor.RED));
        }
    }
 }
@@ -0,0 +1,56 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+@CommandAlias("mv")
+public class SilentCommand extends MultiverseCoreCommand {
+
+    public SilentCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @Subcommand("silent")
+    @CommandPermission("multiverse.core.silent")
+    @Description("Show current state of silent mode.")
+    public void onShowSilentCommand(@NotNull CommandSender sender) {
+        displaySilentMode(sender);
+    }
+
+    @Subcommand("silent")
+    @CommandPermission("multiverse.core.silent")
+    @Syntax("<true|false>")
+    @CommandCompletion("true|false")
+    @Description("Reduces the amount of startup messages.")
+    public void onChangeSilentCommand(@NotNull CommandSender sender,
+                                      boolean silent) {
+
+        plugin.getMVConfig().setSilentStart(silent);
+        if (!plugin.saveMVConfigs()) {
+            sender.sendMessage(String.format("%sFailed to save config! Check your console for details.", ChatColor.RED));
+        }
+
+        displaySilentMode(sender);
+    }
+
+    private void displaySilentMode(CommandSender sender) {
+        sender.sendMessage((plugin.getMVConfig().getSilentStart())
+                ? String.format("Multiverse Silent Start mode is %sOn", ChatColor.GREEN)
+                : String.format("Multiverse Silent Start mode is %sOff", ChatColor.RED));
+    }
+}
@@ -1,42 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-
-import java.util.List;
-
-/**
- * Takes the player to the latest bed he's slept in.
- */
-public class SleepCommand extends MultiverseCommand {
-
-    public SleepCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Go to Sleep");
-        this.setCommandUsage("/mv sleep");
-        this.setArgRange(0, 0);
-        this.addKey("mv sleep");
-        this.setPermission("multiverse.core.sleep", "Takes you the latest bed you've slept in (Currently BROKEN).", PermissionDefault.OP);
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player p = null;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-        }
-
-        if (p == null) {
-            return;
-        }
-    }
-}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,84 +7,68 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.context.RequiredPlayer;
 import org.bukkit.ChatColor;
 import org.bukkit.Location;
 import org.bukkit.command.CommandSender;
+import org.bukkit.command.ConsoleCommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-
-/**
- * Teleports a player to the spawn.
- */
-public class SpawnCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class SpawnCommand extends MultiverseCoreCommand {

    public SpawnCommand(MultiverseCore plugin) {
        super(plugin);
-        Permission otherPerm = new Permission("multiverse.core.spawn.other",
-                "Teleports another player to the spawn of the world they are in.", PermissionDefault.OP);
-        this.setName("Spawn");
-        this.setCommandUsage("/mv spawn" + ChatColor.GOLD + " [PLAYER]");
-        this.setArgRange(0, 1);
-        this.addKey("mvspawn");
-        this.addKey("mv spawn");
-        this.addKey("mvs");
-        this.setPermission("multiverse.core.spawn.self", "Teleports you to the Spawn Point of the world you are in.", PermissionDefault.OP);
-        this.addAdditonalPermission(otherPerm);
-
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        Player player = null;
-        if (sender instanceof Player) {
-            player = (Player) sender;
-        }
-        // If a persons name was passed in, you must be A. the console, or B have permissions
-        if (args.size() == 1) {
-            if (player != null && !this.plugin.getMVPerms().hasPermission(player, "multiverse.core.spawn.other", true)) {
-                sender.sendMessage("You don't have permission to teleport another player to spawn. (multiverse.core.spawn.other)");
-                return;
-            }
-            Player target = this.plugin.getServer().getPlayer(args.get(0));
-            if (target != null) {
-                target.sendMessage("Teleporting to this world's spawn...");
-                spawnAccurately(target);
-
-                if (player != null) {
-                    target.sendMessage("You were teleported by: " + ChatColor.YELLOW + player.getName());
-                } else {
-                    target.sendMessage("You were teleported by: " + ChatColor.LIGHT_PURPLE + "the console");
-                }
-            } else {
-                sender.sendMessage(args.get(0) + " is not logged on right now!");
-            }
-        } else {
-            if (player != null && !this.plugin.getMVPerms().hasPermission(player, "multiverse.core.spawn.self", true)) {
-                sender.sendMessage("You don't have permission to teleport yourself to spawn. (multiverse.core.spawn.self)");
-                return;
-            }
-            if (player != null) {
-                player.sendMessage("Teleporting to this world's spawn...");
-                spawnAccurately(player);
-            } else {
-                sender.sendMessage("From the console, you must provide a PLAYER.");
-            }
-        }
+    @Subcommand("spawn")
+    @CommandPermission("multiverse.core.spawn.self")
+    @Description("Teleport yourself to the spawn of the world.")
+    public void onSpawnCommand(@NotNull Player player) {
+        doSpawn(player, player);
    }

-    private void spawnAccurately(Player player) {
-        MultiverseWorld world = this.plugin.getMVWorldManager().getMVWorld(player.getWorld().getName());
-        Location spawnLocation;
-        if (world != null) {
-            spawnLocation = world.getSpawnLocation();
-        } else {
-            spawnLocation = player.getWorld().getSpawnLocation();
+    @CommandAlias("spawn")
+    @CommandPermission("multiverse.core.spawn.other")
+    @Syntax("[player]")
+    @CommandCompletion("@players")
+    @Description("Teleport another player to the spawn of the world they are in.")
+    public void onSpawnCommand(@NotNull CommandSender sender,
+
+                               @NotNull
+                               @Syntax("[player]")
+                               @Description("Target player to teleport to spawn.")
+                               RequiredPlayer player) {
+
+        doSpawn(sender, player.get());
+    }
+
+    private void doSpawn(@NotNull CommandSender sender,
+                         @NotNull Player player) {
+
+        MultiverseWorld world = this.plugin.getMVWorldManager().getMVWorld(player.getWorld());
+        Location spawnLocation = (world == null) ? player.getWorld().getSpawnLocation() : world.getSpawnLocation();
+
+        this.plugin.getSafeTTeleporter().safelyTeleport(player, player, spawnLocation, false);
+
+        if (sender.equals(player)) {
+            player.sendMessage("Teleported to this world's spawn.");
+            return;
        }
-        this.plugin.getTeleporter().safelyTeleport(player, player, spawnLocation, false);
+
+        String senderName = (sender instanceof ConsoleCommandSender)
+                ? String.format("%sconsole%s", ChatColor.LIGHT_PURPLE, ChatColor.RESET)
+                : String.format("%s%s%s", ChatColor.YELLOW, sender.getName(), ChatColor.RESET);
+
+        player.sendMessage("You were teleported by " + senderName + "to spawn.");
    }
 }
@@ -1,65 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.commands;
-
-import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
-import org.getspout.spoutapi.gui.GenericButton;
-import org.getspout.spoutapi.gui.GenericPopup;
-import org.getspout.spoutapi.gui.PopupScreen;
-import org.getspout.spoutapi.player.SpoutPlayer;
-
-import java.util.List;
-
-/**
- * Edit a world with spout.
- */
-public class SpoutCommand extends MultiverseCommand {
-
-    public SpoutCommand(MultiverseCore plugin) {
-        super(plugin);
-        this.setName("Edit World with Spout");
-        this.setCommandUsage("/mv spout");
-        this.setArgRange(0, 0);
-        this.addKey("mv spout");
-        this.setPermission("multiverse.core.spout", "Edit a world with spout.", PermissionDefault.OP);
-        this.addCommandExample("/mv spout");
-    }
-
-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (!(sender instanceof Player)) {
-            sender.sendMessage(ChatColor.RED + "This command must be run as a player!");
-            return;
-        }
-        if (plugin.getSpout() == null) {
-            sender.sendMessage(ChatColor.RED + "You need spout installed on this server to use it with Multiverse!");
-            return;
-        }
-        SpoutPlayer p = (SpoutPlayer) sender;
-        if (!p.isSpoutCraftEnabled()) {
-            sender.sendMessage(ChatColor.RED + p.getName() + "You need to be using the Spoutcraft client to run this command!");
-            return;
-        }
-        PopupScreen pop = new GenericPopup();
-        GenericButton button = new GenericButton("Fish");
-        // TODO maybe use constants for these
-        // BEGIN CHECKSTYLE-SUPPRESSION: MagicNumberCheck
-        button.setX(50);
-        button.setY(50);
-        button.setWidth(100);
-        button.setHeight(40);
-        // END CHECKSTYLE-SUPPRESSION: MagicNumberCheck
-        pop.attachWidget(this.plugin, button);
-        sender.sendMessage(ChatColor.GREEN + "YAY!");
-        p.getMainScreen().attachPopupScreen(pop);
-    }
-}
@@ -0,0 +1,79 @@
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.BaseCommand;
+import co.aikar.commands.CommandHelp;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.HelpCommand;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+public class SubModulesCommand {
+
+    public static class NetherPortals extends BaseCommand {
+
+        @HelpCommand
+        @CommandAlias("mvnp")
+        @CommandPermission("multiverse.core.submodules")
+        @Description("Suggest download for Multiverse-NetherPortals.")
+        public void onSuggestCommand(@NotNull CommandSender sender,
+                                     @NotNull CommandHelp help) {
+
+            suggestDownload(
+                    sender,
+                    "Multiverse-NetherPortals",
+                    ColorAlternator.with(ChatColor.DARK_PURPLE, ChatColor.LIGHT_PURPLE),
+                    "https://dev.bukkit.org/projects/multiverse-netherportals"
+            );
+        }
+    }
+
+    public static class Portals extends BaseCommand {
+
+        @HelpCommand
+        @CommandAlias("mvp")
+        @CommandPermission("multiverse.core.submodules")
+        @Description("Suggest download for Multiverse-Portals.")
+        public void onSuggestCommand(@NotNull CommandSender sender,
+                                     @NotNull CommandHelp help) {
+
+            suggestDownload(
+                    sender,
+                    "Multiverse-Portals",
+                    ColorAlternator.with(ChatColor.DARK_RED, ChatColor.RED),
+                    "https://dev.bukkit.org/projects/multiverse-portals"
+            );
+        }
+    }
+
+    public static class Inventories extends BaseCommand {
+
+        @HelpCommand
+        @CommandAlias("mvinv")
+        @CommandPermission("multiverse.core.submodules")
+        @Description("Suggest download for Multiverse-Inventories.")
+        public void onSuggestCommand(@NotNull CommandSender sender,
+                                     @NotNull CommandHelp help) {
+
+            suggestDownload(
+                    sender,
+                    "Multiverse-Inventories",
+                    ColorAlternator.with(ChatColor.DARK_AQUA, ChatColor.AQUA),
+                    "https://dev.bukkit.org/projects/multiverse-inventories"
+            );
+        }
+    }
+
+    private static void suggestDownload(@NotNull CommandSender sender,
+                                        @NotNull String pluginName,
+                                        @NotNull ColorAlternator colours,
+                                        @NotNull String downloadLink) {
+
+        sender.sendMessage(String.format("%s%s%s is not installed on this server. You can learn more and download it at:",
+                colours.getThisColor(), pluginName, ChatColor.WHITE));
+        sender.sendMessage(String.format("%s%s", colours.getThatColor(), downloadLink));
+    }
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,201 +7,215 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.BaseCommand;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.dumptruckman.minecraft.util.Logging;
 import com.onarandombox.MultiverseCore.MultiverseCore;
 import com.onarandombox.MultiverseCore.api.MVDestination;
-import com.onarandombox.MultiverseCore.destination.DestinationFactory;
+import com.onarandombox.MultiverseCore.api.SafeTTeleporter;
+import com.onarandombox.MultiverseCore.api.Teleporter;
+import com.onarandombox.MultiverseCore.commandtools.queue.QueuedCommand;
+import com.onarandombox.MultiverseCore.destination.CustomTeleporterDestination;
 import com.onarandombox.MultiverseCore.destination.InvalidDestination;
 import com.onarandombox.MultiverseCore.destination.WorldDestination;
 import com.onarandombox.MultiverseCore.enums.TeleportResult;
 import com.onarandombox.MultiverseCore.event.MVTeleportEvent;
-import com.onarandombox.MultiverseCore.utils.LocationManipulation;
-import com.onarandombox.MultiverseCore.utils.SafeTTeleporter;
 import org.bukkit.ChatColor;
 import org.bukkit.Location;
-import org.bukkit.World;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.ArrayList;
-import java.util.List;
-import java.util.logging.Level;
+import java.util.Set;

-/**
- * Used to teleport players.
- */
-public class TeleportCommand extends MultiverseCommand {
-    private SafeTTeleporter playerTeleporter;
+public class TeleportCommand extends MultiverseCoreCommand {
+
+    private final SafeTTeleporter playerTeleporter;
+
+    private static final int UNSAFE_TELEPORT_EXPIRE_DELAY = 300; // In ticks

    public TeleportCommand(MultiverseCore plugin) {
        super(plugin);
-        Permission menu = new Permission("multiverse.teleport.*", "Allows you to display the teleport menu.", PermissionDefault.OP);
-
-        this.setName("Teleport");
-        this.setCommandUsage("/mv tp " + ChatColor.GOLD + "[PLAYER]" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 2);
-        this.addKey("mvtp");
-        this.addKey("mv tp");
-        this.playerTeleporter = new SafeTTeleporter(this.plugin);
-        this.setPermission(menu);
+        this.playerTeleporter = this.plugin.getSafeTTeleporter();
    }

-    private static final int UNSAFE_TELEPORT_EXPIRE_DELAY = 15;
+    @CommandAlias("mv")
+    public class Teleport extends BaseCommand {

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Check if the command was sent from a Player.
-        CommandSender teleporter = sender;
-        Player teleportee = null;
-        if (sender instanceof Player) {
-            teleporter = (Player) sender;
+        @Subcommand("tp|teleport")
+        @Syntax("[player] <destination>")
+        @CommandCompletion("@players|@MVWorlds:playerOnly|@destinations:playerOnly @players|@MVWorlds|@destinations")
+        @Description("Allows you to the teleport to a location on your server!")
+        public void doTeleportCommand(@NotNull CommandSender sender,
+
+                                      @Syntax("[player]")
+                                      @Description("Target player to teleport.")
+                                      @NotNull @Flags("other,defaultself,fallbackself") Player player,
+
+                                      @Syntax("<destination>")
+                                      @Description("Location, can be a world name.")
+                                      @NotNull @Flags("type=destination") String destinationName) {
+
+            doTeleport(sender, player, destinationName);
        }

-        String destinationName;
-
-        if (args.size() == 2) {
-            teleportee = this.plugin.getServer().getPlayer(args.get(0));
-            if (teleportee == null) {
-                this.messaging.sendMessage(sender, String.format("Sorry, I couldn't find player: %s%s",
-                        ChatColor.GOLD, args.get(0)), false);
-                return;
-            }
-            destinationName = args.get(1);
-
-        } else {
-            destinationName = args.get(0);
-            if (!(sender instanceof Player)) {
-                this.messaging.sendMessage(sender, String.format("From the console, you must specify a player to teleport"), false);
-                return;
-            }
-            teleportee = (Player) sender;
+        @Override
+        public Set<String> getRequiredPermissions() {
+            return destPerms();
        }
-        // Special case for cannons:
-        if (destinationName.matches("(?i)cannon-[\\d]+(\\.[\\d]+)?")) {
-            String[] cannonSpeed = destinationName.split("-");
-            try {
-                double speed = Double.parseDouble(cannonSpeed[1]);
-                destinationName = "ca:" + teleportee.getWorld().getName() + ":" + teleportee.getLocation().getX()
-                        + "," + teleportee.getLocation().getY() + "," + teleportee.getLocation().getZ() + ":"
-                        + teleportee.getLocation().getPitch() + ":" + teleportee.getLocation().getYaw() + ":" + speed;
-            } catch (Exception e) {
-                destinationName = "i:invalid";
-            }
+    }

+    public class AliasTeleport extends BaseCommand {
+
+        @CommandAlias("mvtp")
+        @Syntax("[player] <destination>")
+        @CommandCompletion("@players|@MVWorlds:playerOnly|@destinations:playerOnly @MVWorlds|@destinations")
+        @Description("Alias for /mv tp")
+        public void doTeleportCommand(@NotNull CommandSender sender,
+
+                                      @Syntax("[player]")
+                                      @Description("Target player to teleport.")
+                                      @NotNull @Flags("other,defaultself,fallbackself") Player player,
+
+                                      @Syntax("<destination>")
+                                      @Description("Location, can be a world name.")
+                                      @NotNull @Flags("type=destination") String destinationName) {
+
+            doTeleport(sender, player, destinationName);
        }
-        DestinationFactory df = this.plugin.getDestFactory();
-        MVDestination d = df.getDestination(destinationName);

+        @Override
+        public Set<String> getRequiredPermissions() {
+            return destPerms();
+        }
+    }

-        MVTeleportEvent teleportEvent = new MVTeleportEvent(d, teleportee, teleporter, true);
+    private Set<String> destPerms() {
+        return this.plugin.getDestFactory().getPermissions();
+    }
+
+    private void doTeleport(@NotNull CommandSender teleporter,
+                            @NotNull Player teleportee,
+                            @NotNull String destinationName) {
+
+        MVDestination destination = this.plugin.getDestFactory().getPlayerAwareDestination(teleportee, destinationName);
+
+        MVTeleportEvent teleportEvent = new MVTeleportEvent(destination, teleportee, teleporter, true);
        this.plugin.getServer().getPluginManager().callEvent(teleportEvent);
        if (teleportEvent.isCancelled()) {
-            this.plugin.log(Level.FINE, "Someone else cancelled the MVTeleport Event!!!");
+            Logging.fine("Someone else cancelled the MVTeleport Event!!!");
            return;
        }

-        if (d != null && d instanceof InvalidDestination) {
-            this.messaging.sendMessage(sender, String.format("Multiverse does not know how to take you to %s%s",
-                    ChatColor.RED, destinationName), false);
+        if (destination instanceof InvalidDestination) {
+            teleporter.sendMessage(String.format("Multiverse does not know how to take you to %s%s", ChatColor.RED, destinationName));
            return;
        }

-        if (!this.checkSendPermissions(teleporter, teleportee, d)) {
+        if (!this.checkSendPermissions(teleporter, teleportee, destination)) {
            return;
        }

-        if (MultiverseCore.EnforceAccess && teleporter != null && !this.plugin.getMVPerms().canEnterDestination(teleporter, d)) {
-            if (teleportee.equals(teleporter)) {
-                teleporter.sendMessage("Doesn't look like you're allowed to go " + ChatColor.RED + "there...");
-            } else {
-                teleporter.sendMessage("Doesn't look like you're allowed to send " + ChatColor.GOLD
-                        + teleportee.getName() + ChatColor.WHITE + " to " + ChatColor.RED + "there...");
-            }
-            return;
-        } else if (teleporter != null && !this.plugin.getMVPerms().canTravelFromLocation(teleporter, d.getLocation(teleportee))) {
-            if (teleportee.equals(teleporter)) {
-                this.messaging.sendMessage(teleporter, String.format("DOH! Doesn't look like you can get to %s%s %sfrom where you are...",
-                        ChatColor.GREEN, d.toString(), ChatColor.WHITE), false);
-            } else {
-                this.messaging.sendMessage(teleporter, String.format("DOH! Doesn't look like %s%s %scan get to %sTHERE from where they are...",
-                        ChatColor.GREEN, ((Player) teleporter).getWorld().getName(), ChatColor.WHITE, ChatColor.RED), false);
-            }
+        if (this.plugin.getMVConfig().getEnforceAccess() && !this.plugin.getMVPerms().canEnterDestination(teleportee, destination)) {
+            teleporter.sendMessage((teleportee.equals(teleporter))
+                    ? "Doesn't look like you're allowed to go " + ChatColor.RED + "there..."
+                    : "Doesn't look like you're allowed to send " + ChatColor.GOLD + teleportee.getName() + ChatColor.WHITE + " to " + ChatColor.RED + "there...");
            return;
        }

-        // Special check to verify if players are tryint to teleport to the same
-        // WORLDDestination as the world they're in, that they ALSO have multiverse.core.spawn.self
-
-        if (d instanceof WorldDestination) {
-            World w = d.getLocation(teleportee).getWorld();
-            if (teleportee.getWorld().equals(w)) {
-                if (teleporter.equals(teleportee)) {
-                    if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.core.spawn.self", true)) {
-                        this.messaging.sendMessages(teleporter, new String[]{
-                                String.format("Sorry you don't have permission to go to the world spawn!"),
-                                String.format("%s  (multiverse.core.spawn.self)",
-                                        ChatColor.RED) }, false);
-                        return;
-                    }
-                } else {
-                    if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.core.spawn.other", true)) {
-                        this.messaging.sendMessages(teleporter, new String[]{
-                                String.format("Sorry you don't have permission to send %s to the world spawn!",
-                                        teleportee.getDisplayName()),
-                                String.format("%s  (multiverse.core.spawn.other)",
-                                        ChatColor.RED) }, false);
-                        return;
-                    }
-                }
-            }
-        }
-
-        if (d.getLocation(teleportee) == null) {
-            this.messaging.sendMessage(teleporter, "Sorry Boss, I tried everything, but just couldn't teleport ya there!", false);
+        if (!this.plugin.getMVPerms().canTravelFromLocation(teleporter, destination.getLocation(teleportee))) {
+            teleporter.sendMessage((teleportee.equals(teleporter))
+                    ? String.format("Doh! Doesn't look like you can get to %s%s %sfrom where you are...",
+                    ChatColor.GREEN, destination.toString(), ChatColor.WHITE)
+                    : String.format("Doh! Doesn't look like %s%s %scan get to %sTHERE from where they are...",
+                    ChatColor.GREEN, ((Player) teleporter).getWorld().getName(), ChatColor.WHITE, ChatColor.RED));
            return;
        }
-        TeleportResult result = this.playerTeleporter.safelyTeleport(teleporter, teleportee, d);
+
+        // Special check to verify if players are trying to teleport to the same WORLD Destination
+        // as the world they're in, that they ALSO have multiverse.core.spawn.self
+        if (destination instanceof WorldDestination
+                && teleportee.getWorld().equals(destination.getLocation(teleportee).getWorld())
+                && !checkSpawnPermissions(teleporter, teleportee)) {
+            return;
+        }
+
+        if (destination.getLocation(teleportee) == null) {
+            teleporter.sendMessage("Sorry Boss, I tried everything, but just couldn't teleport ya there!");
+            return;
+        }
+
+        Teleporter teleportObject = (destination instanceof CustomTeleporterDestination)
+                ? ((CustomTeleporterDestination) destination).getTeleporter()
+                : this.playerTeleporter;
+
+        TeleportResult result = teleportObject.teleport(teleporter, teleportee, destination);
        if (result == TeleportResult.FAIL_UNSAFE) {
-            this.plugin.log(Level.FINE, "Could not teleport " + teleportee.getName() + " to " + LocationManipulation.strCoordsRaw(d.getLocation(teleportee)));
-            this.plugin.log(Level.FINE, "Queueing Command");
-            Class<?>[] paramTypes = { CommandSender.class, Player.class, Location.class };
-            List<Object> items = new ArrayList<Object>();
-            items.add(teleporter);
-            items.add(teleportee);
-            items.add(d.getLocation(teleportee));
-            String player = "you";
-            if (!teleportee.equals(teleporter)) {
-                player = teleportee.getName();
-            }
-            String message = String.format("%sMultiverse %sdid not teleport %s%s%sto %s%s%sbecause it was unsafe.",
-                    ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, player, ChatColor.WHITE, ChatColor.DARK_AQUA, d.getName(), ChatColor.WHITE);
-            this.plugin.getCommandHandler().queueCommand(sender, "mvteleport", "teleportPlayer", items,
-                    paramTypes, message, "Would you like to try anyway?", "", "", UNSAFE_TELEPORT_EXPIRE_DELAY);
+            Logging.fine("Could not teleport %s to %s.",
+                    teleportee.getName(), this.plugin.getLocationManipulation().strCoordsRaw(destination.getLocation(teleportee)));
+
+            this.plugin.getMVCommandManager().getQueueManager().addToQueue(new QueuedCommand.Builder()
+                    .sender(teleporter)
+                    .action(unsafeTeleportRunnable(teleporter, teleportee, destination.getLocation(teleportee)))
+                    .prompt("The location you are trying to teleport to is deemed unsafe, do you still want to try?")
+                    .validDuration(UNSAFE_TELEPORT_EXPIRE_DELAY)
+                    .build()
+            );
        }
+
        // else: Player was teleported successfully (or the tp event was fired I should say)
    }

-    private boolean checkSendPermissions(CommandSender teleporter, Player teleportee, MVDestination destination) {
+    private boolean checkSendPermissions(@NotNull CommandSender teleporter,
+                                         @NotNull Player teleportee,
+                                         @NotNull MVDestination destination) {
+
        if (teleporter.equals(teleportee)) {
            if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.teleport.self." + destination.getIdentifier(), true)) {
-                this.messaging.sendMessages(teleporter, new String[]{
-                        String.format("%sYou don't have permission to teleport %syourself %sto a %s%s %sDestination",
-                                ChatColor.WHITE, ChatColor.AQUA, ChatColor.WHITE, ChatColor.RED, destination.getType(), ChatColor.WHITE),
-                        String.format("%s   (multiverse.teleport.self.%s)",
-                                ChatColor.RED, destination.getIdentifier()) }, false);
-                return false;
-            }
-        } else {
-            if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.teleport.other." + destination.getIdentifier(), true)) {
-                this.messaging.sendMessages(teleporter, new String[]{
-                        String.format("You don't have permission to teleport another player to a %s%s Destination.",
-                                ChatColor.GREEN, destination.getType()),
-                        String.format("%s(multiverse.teleport.other.%s)",
-                                ChatColor.RED, destination.getIdentifier()) }, false);
+                teleporter.sendMessage(String.format("%sYou don't have permission to teleport %syourself %sto a %s%s %sDestination", ChatColor.WHITE, ChatColor.AQUA, ChatColor.WHITE, ChatColor.RED, destination.getType(), ChatColor.WHITE));
+                teleporter.sendMessage(String.format("%s   (multiverse.teleport.self.%s)", ChatColor.RED, destination.getIdentifier()));
                return false;
            }
+            return true;
+        }
+        if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.teleport.other." + destination.getIdentifier(), true)) {
+            teleporter.sendMessage(String.format("You don't have permission to teleport another player to a %s%s Destination.", ChatColor.GREEN, destination.getType()));
+            teleporter.sendMessage(String.format("%s(multiverse.teleport.other.%s)", ChatColor.RED, destination.getIdentifier()));
+            return false;
        }
        return true;
    }
+
+    private boolean checkSpawnPermissions(@NotNull CommandSender teleporter,
+                                          @NotNull Player teleportee) {
+
+        if (teleporter.equals(teleportee)) {
+            if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.core.spawn.self", true)) {
+                teleporter.sendMessage(String.format("Sorry you don't have permission to go to the world spawn!"));
+                teleporter.sendMessage(String.format("%s  (multiverse.core.spawn.self)", ChatColor.RED));
+                return false;
+            }
+            return true;
+        }
+
+        if (!this.plugin.getMVPerms().hasPermission(teleporter, "multiverse.core.spawn.other", true)) {
+            teleporter.sendMessage(String.format("Sorry you don't have permission to send %s to the world spawn!", teleportee.getDisplayName()));
+            teleporter.sendMessage(String.format("%s  (multiverse.core.spawn.other)", ChatColor.RED));
+            return false;
+        }
+        return true;
+    }
+
+    @NotNull
+    private Runnable unsafeTeleportRunnable(@NotNull CommandSender teleporter,
+                                            @NotNull Player teleportee,
+                                            @NotNull Location location) {
+
+        return () -> this.plugin.getSafeTTeleporter().safelyTeleport(teleporter, teleportee, location, false);
+    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,36 +7,44 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import org.bukkit.ChatColor;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-
-/**
- * Unloads worlds from Multiverse.
- */
-public class UnloadCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class UnloadCommand extends MultiverseCoreCommand {

    public UnloadCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Unload World");
-        this.setCommandUsage("/mv unload" + ChatColor.GREEN + " {WORLD}");
-        this.setArgRange(1, 1);
-        this.addKey("mvunload");
-        this.addKey("mv unload");
-        this.setPermission("multiverse.core.unload",
-                "Unloads a world from Multiverse. This does NOT remove the world folder. This does NOT remove it from the config file.", PermissionDefault.OP);
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        if (this.plugin.getMVWorldManager().unloadWorld(args.get(0))) {
-            Command.broadcastCommandMessage(sender, "Unloaded world '" + args.get(0) + "'!");
-        } else {
-            sender.sendMessage("Error trying to unload world '" + args.get(0) + "'!");
+    @Subcommand("unload")
+    @CommandPermission("multiverse.core.unload")
+    @Syntax("<world>")
+    @CommandCompletion("@MVWorlds")
+    @Description("Unloads a world from Multiverse. This does NOT remove the world folder. This does NOT remove it from the config file.")
+    public void onUnloadCommand(@NotNull CommandSender sender,
+
+                                @NotNull
+                                @Syntax("<world>")
+                                @Description("Name of world you want to unload.")
+                                @Flags("other") MultiverseWorld world) {
+
+        //TODO API: Should be able to use MVWorld object directly
+        if (!this.plugin.getMVWorldManager().unloadWorld(world.getName())) {
+            sender.sendMessage(String.format("Error unloading world '%s'! See console for more details.",
+                    world.getColoredWorldString()));
+            return;
        }
+        Command.broadcastCommandMessage(sender,  String.format("Unloaded world '%s'!", world.getColoredWorldString()));
    }
 }
@@ -0,0 +1,37 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commands;
+
+import co.aikar.commands.CommandHelp;
+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.HelpCommand;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import org.jetbrains.annotations.NotNull;
+
+@CommandAlias("mv")
+public class UsageCommand extends MultiverseCoreCommand {
+
+    public UsageCommand(MultiverseCore plugin) {
+        super(plugin);
+    }
+
+    @HelpCommand
+    @Subcommand("help")
+    @CommandPermission("multiverse.core.help")
+    @Syntax("[filter] [page]")
+    @CommandCompletion("@subCommands:mv")
+    @Description("Show Multiverse-Core Command usage.")
+    public void onUsageCommand(@NotNull CommandHelp help) {
+        this.plugin.getMVCommandManager().showUsage(help);
+    }
+}
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,103 +7,177 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagGroup;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagResult;
+import com.onarandombox.MultiverseCore.commandtools.flag.CoreFlags;
 import com.onarandombox.MultiverseCore.event.MVVersionEvent;
 import com.onarandombox.MultiverseCore.utils.webpaste.PasteFailedException;
 import com.onarandombox.MultiverseCore.utils.webpaste.PasteService;
 import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceFactory;
 import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceType;
+import com.onarandombox.MultiverseCore.utils.webpaste.URLShortener;
+import com.onarandombox.MultiverseCore.utils.webpaste.URLShortenerFactory;
+import com.onarandombox.MultiverseCore.utils.webpaste.URLShortenerType;
+import org.apache.commons.lang.StringUtils;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.bukkit.command.ConsoleCommandSender;
+import org.bukkit.scheduler.BukkitRunnable;
+import org.jetbrains.annotations.NotNull;

-import java.util.List;
-import java.util.logging.Level;
+import java.io.File;
+import java.util.Arrays;
+import java.util.Map;

-/**
- * Dumps version info to the console.
- */
-public class VersionCommand extends MultiverseCommand {
+@CommandAlias("mv")
+public class VersionCommand extends MultiverseCoreCommand {
+
+    private static final URLShortener SHORTENER = URLShortenerFactory.getService(URLShortenerType.BITLY);

    public VersionCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Multiverse Version");
-        this.setCommandUsage("/mv version " + ChatColor.GOLD + "-[pb]");
-        this.setArgRange(0, 1);
-        this.addKey("mv version");
-        this.addKey("mvv");
-        this.addKey("mvversion");
-        this.setPermission("multiverse.core.version",
-                "Dumps version info to the console, optionally to pastie.org with -p or pastebin.com with a -b.", PermissionDefault.TRUE);
+        this.setFlagGroup(FlagGroup.of(
+                CoreFlags.PASTE_SERVICE_TYPE,
+                CoreFlags.INCLUDE_PLUGIN_LIST
+        ));
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // Check if the command was sent from a Player.
-        if (sender instanceof Player) {
-            sender.sendMessage("Version info dumped to console. Please check your server logs.");
-        }
+    @Subcommand("version")
+    @CommandPermission("multiverse.core.version")
+    @Syntax("--paste [pastebin|hastebin|pastegg] [--include-plugin-list]")
+    @CommandCompletion("@flags")
+    @Description("Dumps version info to the console, optionally to pastal service.")
+    public void onVersionCommand(@NotNull CommandSender sender,

-        StringBuilder buffer = new StringBuilder();
-        buffer.append("[Multiverse-Core] Multiverse-Core Version: ").append(this.plugin.getDescription().getVersion()).append('\n');
-        buffer.append("[Multiverse-Core] Bukkit Version: ").append(this.plugin.getServer().getVersion()).append('\n');
-        buffer.append("[Multiverse-Core] Loaded Worlds: ").append(this.plugin.getMVWorldManager().getMVWorlds().size()).append('\n');
-        buffer.append("[Multiverse-Core] Multiverse Plugins Loaded: ").append(this.plugin.getPluginCount()).append('\n');
-        buffer.append("[Multiverse-Core] Economy being used: ").append(this.plugin.getBank().getEconUsed()).append('\n');
-        buffer.append("[Multiverse-Core] Permissions Plugin: ").append(this.plugin.getMVPerms().getType()).append('\n');
-        buffer.append("[Multiverse-Core] Dumping Config Values: (version ")
-                .append(this.plugin.getMVConfiguration().getDouble("version", -1)).append(")").append('\n');
-        buffer.append("[Multiverse-Core]  messagecooldown: ").append(this.plugin.getMessaging().getCooldown()).append('\n');
-        buffer.append("[Multiverse-Core]  teleportcooldown: ").append("Not yet IMPLEMENTED").append('\n');
-        buffer.append("[Multiverse-Core]  worldnameprefix: ").append(MultiverseCore.PrefixChat).append('\n');
-        buffer.append("[Multiverse-Core]  enforceaccess: ").append(MultiverseCore.EnforceAccess).append('\n');
-        buffer.append("[Multiverse-Core]  displaypermerrors: ").append(MultiverseCore.DisplayPermErrors).append('\n');
-        buffer.append("[Multiverse-Core]  teleportintercept: ").append(MultiverseCore.TeleportIntercept).append('\n');
-        buffer.append("[Multiverse-Core]  firstspawnoverride: ").append(MultiverseCore.FirstSpawnOverride).append('\n');
-        buffer.append("[Multiverse-Core]  firstspawnworld: ").append(this.plugin.getMVConfiguration().getString("firstspawnworld", "NOT SET")).append('\n');
-        buffer.append("[Multiverse-Core]  debug: ").append(MultiverseCore.GlobalDebug).append('\n');
-        buffer.append("[Multiverse-Core] Special Code: FRN002").append('\n');
+                                 @NotNull
+                                 @Syntax("[paste-service]")
+                                 @Description("Website to upload your version info to.")
+                                 String[] flagsArray) {

-        MVVersionEvent versionEvent = new MVVersionEvent(buffer.toString());
+        FlagResult flags = FlagResult.parse(flagsArray, this.getFlagGroup());
+
+        MVVersionEvent versionEvent = new MVVersionEvent();
+        this.addVersionInfoToEvent(versionEvent);
        this.plugin.getServer().getPluginManager().callEvent(versionEvent);

-        // log to console
-        String data = versionEvent.getVersionInfo();
-        String[] lines = data.split("\n");
-        for (String line : lines) {
-            this.plugin.log(Level.INFO, line);
+        if (flags.getValue(CoreFlags.INCLUDE_PLUGIN_LIST)) {
+            versionEvent.appendVersionInfo('\n' + "Plugins: " + getPluginList());
+            versionEvent.putDetailedVersionInfo("plugins.txt", "Plugins: " + getPluginList());
        }

-        if (args.size() == 1) {
-            String pasteUrl = "";
-            if (args.get(0).equalsIgnoreCase("-p")) {
-                pasteUrl = postToService(PasteServiceType.PASTIE, true, data); // private post to pastie
-            } else if (args.get(0).equalsIgnoreCase("-b")) {
-                pasteUrl = postToService(PasteServiceType.PASTEBIN, true, data); // private post to pastie
-            } else {
-                return;
+        String versionInfo = versionEvent.getVersionInfo();
+        versionEvent.putDetailedVersionInfo("version.txt", versionInfo);
+
+        Map<String, String> files = versionEvent.getDetailedVersionInfo();
+
+        logToConsole(versionInfo);
+
+        PasteServiceType pasteType = flags.getValue(CoreFlags.PASTE_SERVICE_TYPE);
+        if (pasteType == PasteServiceType.NONE && !(sender instanceof ConsoleCommandSender)) {
+            sender.sendMessage("Version info dumped to console! Please check your server logs.");
+            return;
+        }
+
+        BukkitRunnable logPoster = new BukkitRunnable() {
+            @Override
+            public void run() {
+                String pasteUrl = postToService(pasteType, true, versionInfo, files);
+                sender.sendMessage("Version info dumped here: " + ChatColor.GREEN + pasteUrl);
            }
+        };

-            sender.sendMessage("Version info dumped here: " + ChatColor.GREEN + pasteUrl);
-            this.plugin.log(Level.INFO, "Version info dumped here: " + pasteUrl);
-        }
+        // Run the log posting operation asynchronously, since we don't know how long it will take.
+        logPoster.runTaskAsynchronously(this.plugin);
+    }
+
+    private void logToConsole(String versionInfo) {
+        Arrays.stream(versionInfo.split("\\r?\\n"))
+                .filter(line -> !line.isEmpty())
+                .forEach(this.plugin.getServer().getLogger()::info);
+    }
+
+    private void addVersionInfoToEvent(MVVersionEvent event) {
+        // add the legacy version info
+        event.appendVersionInfo(this.getLegacyString());
+
+        // add the legacy file, but as markdown so it's readable
+        // TODO API: Readd this in 5.0.0
+        // event.putDetailedVersionInfo("version.md", this.getMarkdownString());
+
+        // add config.yml
+        File configFile = new File(this.plugin.getDataFolder(), "config.yml");
+        event.putDetailedVersionInfo("multiverse-core/config.yml", configFile);
+
+        // add worlds.yml
+        File worldsFile = new File(this.plugin.getDataFolder(), "worlds.yml");
+        event.putDetailedVersionInfo("multiverse-core/worlds.yml", worldsFile);
    }

    /**
     * Send the current contents of this.pasteBinBuffer to a web service.
     *
-     * @param type      Service type to send to
-     * @param isPrivate Should the paste be marked as private.
+     * @param type       Service type to send paste data to.
+     * @param isPrivate  Should the paste be marked as private.
+     * @param pasteData  Legacy string only data to post to a service.
+     * @param pasteFiles Map of filenames/contents of debug info.
     * @return URL of visible paste
     */
-    private static String postToService(PasteServiceType type, boolean isPrivate, String pasteData) {
+    private static String postToService(PasteServiceType type, boolean isPrivate, String pasteData, Map<String, String> pasteFiles) {
        PasteService ps = PasteServiceFactory.getService(type, isPrivate);
+
        try {
-            return ps.postData(ps.encodeData(pasteData), ps.getPostURL());
-        } catch (PasteFailedException e) {
-            System.out.print(e);
-            return "Error posting to service";
+            String result = (ps.supportsMultiFile())
+                    ? ps.postData(pasteFiles)
+                    : ps.postData(pasteData);
+
+            return (SHORTENER != null) ? SHORTENER.shorten(result) : result;
+        }
+        catch (PasteFailedException e) {
+            e.printStackTrace();
+            return String.format("%sError posting to service.", ChatColor.RED);
+        }
+        catch (NullPointerException e) {
+            e.printStackTrace();
+            return String.format("%sThat service isn't supported yet.", ChatColor.RED);
        }
    }
+
+    private String getLegacyString() {
+        return "[Multiverse-Core] Multiverse-Core Version: " + this.plugin.getDescription().getVersion() + '\n'
+                + "[Multiverse-Core] Bukkit Version: " + this.plugin.getServer().getVersion() + '\n'
+                + "[Multiverse-Core] Loaded Worlds: " + this.plugin.getMVWorldManager().getMVWorlds() + '\n'
+                + "[Multiverse-Core] Multiverse Plugins Loaded: " + this.plugin.getPluginCount() + '\n'
+                + "[Multiverse-Core] Economy being used: " + plugin.getEconomist().getEconomyName() + '\n'
+                + "[Multiverse-Core] Permissions Plugin: " + this.plugin.getMVPerms().getType() + '\n'
+                + "[Multiverse-Core] Dumping Config Values: (version " + this.plugin.getMVConfig().getVersion() + ")" + '\n'
+                + "[Multiverse-Core]   enforceaccess: " + this.plugin.getMVConfig().getEnforceAccess() + '\n'
+                + "[Multiverse-Core]   prefixchat: " + this.plugin.getMVConfig().getPrefixChat() + '\n'
+                + "[Multiverse-Core]   prefixchatformat: " + this.plugin.getMVConfig().getPrefixChatFormat() + '\n'
+                + "[Multiverse-Core]   useasyncchat: " + this.plugin.getMVConfig().getUseAsyncChat() + '\n'
+                + "[Multiverse-Core]   teleportintercept: " + this.plugin.getMVConfig().getTeleportIntercept() + '\n'
+                + "[Multiverse-Core]   firstspawnoverride: " + this.plugin.getMVConfig().getFirstSpawnOverride() + '\n'
+                + "[Multiverse-Core]   displaypermerrors: " + this.plugin.getMVConfig().getDisplayPermErrors() + '\n'
+                + "[Multiverse-Core]   globaldebug: " + this.plugin.getMVConfig().getGlobalDebug() + '\n'
+                + "[Multiverse-Core]   enablebuscript: " + plugin.getMVConfig().getEnableBuscript() + '\n'
+                + "[Multiverse-Core]   silentstart: " + this.plugin.getMVConfig().getSilentStart() + '\n'
+                + "[Multiverse-Core]   messagecooldown: " + this.plugin.getMessaging().getCooldown() + '\n'
+                + "[Multiverse-Core]   version: " + this.plugin.getMVConfig().getVersion() + '\n'
+                + "[Multiverse-Core]   firstspawnworld: " + this.plugin.getMVConfig().getFirstSpawnWorld() + '\n'
+                + "[Multiverse-Core]   teleportcooldown: " + this.plugin.getMVConfig().getTeleportCooldown() + '\n'
+                + "[Multiverse-Core]   defaultportalsearch: " +this. plugin.getMVConfig().isUsingDefaultPortalSearch() + '\n'
+                + "[Multiverse-Core]   portalsearchradius: " + this.plugin.getMVConfig().getPortalSearchRadius() + '\n'
+                + "[Multiverse-Core]   autopurge: " +this. plugin.getMVConfig().isAutoPurgeEnabled() + '\n'
+                + "[Multiverse-Core] Special Code: FRN002" + '\n';
+    }
+
+    private String getPluginList() {
+        return StringUtils.join(this.plugin.getServer().getPluginManager().getPlugins(), ", ");
+    }
 }
@@ -1,5 +1,5 @@
 /******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2011.                       *
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
 * Multiverse 2 is licensed under the BSD License.                            *
 * For more information please check the README.md file included              *
 * with this project.                                                         *
@@ -7,98 +7,123 @@

 package com.onarandombox.MultiverseCore.commands;

+import co.aikar.commands.annotation.CommandAlias;
+import co.aikar.commands.annotation.CommandCompletion;
+import co.aikar.commands.annotation.CommandPermission;
+import co.aikar.commands.annotation.Conditions;
+import co.aikar.commands.annotation.Description;
+import co.aikar.commands.annotation.Flags;
+import co.aikar.commands.annotation.Optional;
+import co.aikar.commands.annotation.Subcommand;
+import co.aikar.commands.annotation.Syntax;
 import com.onarandombox.MultiverseCore.MultiverseCore;
-import com.onarandombox.MultiverseCore.api.MVWorldManager;
 import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.context.PageFilter;
+import com.onarandombox.MultiverseCore.displaytools.ContentDisplay;
+import com.onarandombox.MultiverseCore.displaytools.ContentFilter;
+import com.onarandombox.MultiverseCore.displaytools.DisplayHandlers;
+import com.onarandombox.MultiverseCore.displaytools.DisplaySettings;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.bukkit.permissions.PermissionDefault;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;

-import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;

-/**
- * States who is in what world.
- */
-public class WhoCommand extends MultiverseCommand {
-
-    private MVWorldManager worldManager;
+@CommandAlias("mv")
+public class WhoCommand extends MultiverseCoreCommand {

    public WhoCommand(MultiverseCore plugin) {
        super(plugin);
-        this.setName("Who?");
-        this.setCommandUsage("/mv who" + ChatColor.GOLD + " [WORLD]");
-        this.setArgRange(0, 1);
-        this.addKey("mv who");
-        this.addKey("mvw");
-        this.addKey("mvwho");
-        this.setPermission("multiverse.core.list.who", "States who is in what world.", PermissionDefault.OP);
-        this.worldManager = this.plugin.getMVWorldManager();
    }

-    @Override
-    public void runCommand(CommandSender sender, List<String> args) {
-        // If this command was sent from a Player then we need to check Permissions
-        Player p = null;
-        // By default, show all from the console
-        boolean showAll = true;
-        if (sender instanceof Player) {
-            p = (Player) sender;
-            showAll = false;
-        }
+    @Subcommand("whoall")
+    @CommandPermission("multiverse.core.list.who.all")
+    @Syntax("[filter]")
+    public void onWhoAllCommand(@NotNull CommandSender sender,

-        List<MultiverseWorld> worlds = new ArrayList<MultiverseWorld>();
+                                @NotNull
+                                @Syntax("[filter] [page]")
+                                @Description("Filter and paging.")
+                                PageFilter pageFilter) {

-        if (args.size() > 0) {
-            MultiverseWorld world = this.worldManager.getMVWorld(args.get(0));
-            if (args.get(0).equalsIgnoreCase("--all") || args.get(0).equalsIgnoreCase("-a")) {
-                showAll = true;
-                worlds = new ArrayList<MultiverseWorld>(this.worldManager.getMVWorlds());
-            } else if (world != null) {
-                if (!world.isHidden()) {
-                    worlds.add(world);
-                }
-            } else {
-                sender.sendMessage(ChatColor.RED + "World does not exist");
-                return;
-            }
-        } else {
-            worlds = new ArrayList<MultiverseWorld>(this.worldManager.getMVWorlds());
-        }
+        Player player = (sender instanceof Player) ? (Player) sender : null;
+        Set<Player> visiblePlayers = getVisiblePlayers(player);

-        if (worlds.size() == 0) {
-            sender.sendMessage("Multiverse does not know about any of your worlds :(");
-        } else if (worlds.size() == 1) {
-            sender.sendMessage(ChatColor.AQUA + "--- Players in" + worlds.get(0).getColoredWorldString() + ChatColor.AQUA + " ---");
-        } else {
-            sender.sendMessage(ChatColor.AQUA + "--- There are players in ---");
-        }
+        new ContentDisplay.Builder<Collection<String>>()
+                .sender(sender)
+                .header("%s--- Worlds and their players --- %s%s/%s", ChatColor.GOLD, ChatColor.AQUA, visiblePlayers.size(), this.plugin.getServer().getMaxPlayers())
+                .contents(buildAllWorlds(player, visiblePlayers))
+                .displayHandler(DisplayHandlers.PAGE_LIST)
+                .filter(pageFilter.getFilter())
+                .setting(DisplaySettings.SHOW_PAGE, pageFilter.getPage())
+                .display();
+    }

-        for (MultiverseWorld world : worlds) {
-            if (!(this.worldManager.isMVWorld(world.getName()))) {
-                continue;
-            }
+    @Subcommand("who")
+    @CommandPermission("multiverse.core.list.who")
+    @Syntax("[world] [filter]")
+    @CommandCompletion("@MVWorlds")
+    public void onWhoCommand(@NotNull CommandSender sender,
+                             @Nullable @Optional Player player,

-            if (p != null && (!this.plugin.getMVPerms().canEnterWorld(p, world))) {
-                continue;
-            }
-            List<Player> players = world.getCBWorld().getPlayers();
+                             @NotNull
+                             @Syntax("[world]")
+                             @Description("World to show player list.")
+                             @Flags("other,defaultself,fallbackself")
+                             @Conditions("hasWorldAccess") MultiverseWorld world,

-            String result = "";
-            if (players.size() <= 0 && !showAll) {
-                continue;
-            }
+                             @NotNull
+                             @Syntax("[filter]")
+                             @Description("Filter the player names.")
+                             ContentFilter filter) {

-            if (players.size() <= 0) {
-                result = "Empty";
-            } else {
-                for (Player player : players) {
-                    result += player.getDisplayName() + " " + ChatColor.WHITE;
-                }
-            }
+        Set<Player> visiblePlayers = getVisiblePlayers(player);

-            sender.sendMessage(world.getColoredWorldString() + ChatColor.WHITE + " - " + result);
-        }
+        new ContentDisplay.Builder<Collection<String>>()
+                .sender(sender)
+                .header("%s===[ Players in %s%s ]===", ChatColor.AQUA, world.getColoredWorldString(), ChatColor.AQUA)
+                .contents(buildPlayerList(world, visiblePlayers))
+                .emptyMessage("%sNo players found.", ChatColor.GRAY)
+                .displayHandler(DisplayHandlers.PAGE_LIST)
+                //TODO: Filter
+                .display();
+    }
+
+    private List<String> buildAllWorlds(@Nullable Player player,
+                                        @NotNull Set<Player> visiblePlayers) {
+
+        return this.plugin.getMVWorldManager().getMVWorlds().stream()
+                .filter(world -> player == null || this.plugin.getMVPerms().canEnterWorld(player, world))
+                .map(world -> getPLayersInWorld(world, visiblePlayers))
+                .collect(Collectors.toList());
+    }
+
+    private String getPLayersInWorld(@NotNull MultiverseWorld world,
+                                     @NotNull Set<Player> visiblePlayers) {
+
+        return String.format("%s%s - %s",
+                world.getColoredWorldString(), ChatColor.WHITE, buildPlayerList(world, visiblePlayers));
+    }
+
+    @NotNull
+    private List<String> buildPlayerList(@NotNull MultiverseWorld world,
+                                         @NotNull Set<Player> visiblePlayers) {
+
+        return world.getCBWorld().getPlayers().stream()
+            .filter(visiblePlayers::contains)
+            .map(Player::getDisplayName)
+            .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Set<Player> getVisiblePlayers(@Nullable Player player) {
+        return this.plugin.getServer().getOnlinePlayers().stream()
+                .filter(targetPLayer -> player == null || player.canSee(targetPLayer))
+                .collect(Collectors.toSet());
    }
 }
@@ -1,4 +1,4 @@
 /**
- * This package contains all Commands.
+ * Where all the commands are.
 */
-package com.onarandombox.MultiverseCore.commands;
+package com.onarandombox.MultiverseCore.commands;
@@ -0,0 +1,323 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools;
+
+import buscript.Buscript;
+import co.aikar.commands.BukkitCommandCompletionContext;
+import co.aikar.commands.CommandIssuer;
+import co.aikar.commands.PaperCommandCompletions;
+import co.aikar.commands.RegisteredCommand;
+import co.aikar.commands.RootCommand;
+import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commandtools.flag.CommandFlag;
+import com.onarandombox.MultiverseCore.commandtools.flag.CommandFlag.ValueRequirement;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagGroup;
+import com.onarandombox.MultiverseCore.enums.AddProperties;
+import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceType;
+import org.bukkit.GameRule;
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.File;
+import java.text.DecimalFormat;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * Generate tab-complete suggestion.
+ */
+public class MVCommandCompletions extends PaperCommandCompletions {
+
+    private final MultiverseCore plugin;
+    private final MVWorldManager worldManager;
+
+    private static final DecimalFormat df = new DecimalFormat();
+
+    static {
+        df.setMinimumFractionDigits(0);
+        df.setMaximumFractionDigits(2);
+    }
+
+    public MVCommandCompletions(@NotNull MVCommandManager manager,
+                                @NotNull MultiverseCore plugin) {
+        super(manager);
+        this.plugin = plugin;
+        this.worldManager = plugin.getMVWorldManager();
+
+        registerAsyncCompletion("flags", this::suggestFlags);
+        registerAsyncCompletion("scripts", this::suggestScripts);
+        registerAsyncCompletion("subCommands", this::suggestSubCommands);
+        registerAsyncCompletion("MVWorlds", this::suggestMVWorlds);
+        registerAsyncCompletion("unloadedWorlds", this::suggestUnloadedWorlds);
+        registerAsyncCompletion("potentialWorlds", this::suggestPotentialWorlds);
+        registerAsyncCompletion("location", this::suggestLocation);
+        registerAsyncCompletion("destinations", this::suggestDestinations);
+        registerAsyncCompletion("anchors", this::suggestAnchors);
+        registerStaticCompletion("MVConfigs", this::suggestMVConfig);
+        registerStaticCompletion("gameRules", this::suggestGameRules);
+        registerStaticCompletion("environments", this::suggestEnvironments);
+        registerStaticCompletion("setProperties", this::suggestSetProperties);
+        registerStaticCompletion("addProperties", this::suggestAddProperties);
+        registerStaticCompletion("livingEntities", this::suggestEntities);
+        registerStaticCompletion("pasteTypes", this::suggestPasteTypes);
+        registerStaticCompletion("toggles", this::suggestToggles);
+    }
+
+    @NotNull
+    private Collection<String> suggestFlags(@NotNull BukkitCommandCompletionContext context) {
+        final MultiverseCommand command = MVCommandReflect.getCommandCompletionContextCommand(context);
+        if (command == null) {
+            Logging.warning("Unable to parse flags as MultiverseCommand not found!");
+            return Collections.emptyList();
+        }
+
+        FlagGroup flagGroup = command.getFlagGroup();
+        String[] args = context.getContextValue(String[].class);
+        CommandFlag<?> flag = (args.length <= 1) ? null : flagGroup.getByKey(args[args.length - 2]);
+
+        if (flag == null || flag.getValueRequirement() == ValueRequirement.NONE) {
+            // suggest new flags.
+            return getRemainingFlagIdentifiers(flagGroup, args);
+        }
+
+        Collection<String> flagSuggestions = flag.suggestValue();
+
+        if (flag.getValueRequirement() == ValueRequirement.OPTIONAL) {
+            // suggest new flags and values.
+            flagSuggestions.addAll(getRemainingFlagIdentifiers(flagGroup, args));
+            return flagSuggestions;
+        }
+        // suggest new values.
+        return flagSuggestions == null ? Collections.emptySet() : flagSuggestions;
+    }
+
+    private Collection<String> getRemainingFlagIdentifiers(FlagGroup flagGroup, String[] args) {
+        Set<String> identifiersRemaining = new HashSet<>(flagGroup.getFlagIdentifiers());
+        identifiersRemaining.removeAll(Arrays.asList(args));
+        return identifiersRemaining;
+    }
+
+    @NotNull
+    private Collection<String> suggestScripts(@NotNull BukkitCommandCompletionContext context) {
+        Buscript scriptAPI = this.plugin.getScriptAPI();
+        if (scriptAPI == null) {
+            return Collections.emptyList();
+        }
+
+        return Arrays.stream(scriptAPI.getScriptFolder().listFiles())
+                .unordered()
+                .filter(File::isFile)
+                .map(File::getName)
+                .filter(fileName -> !fileName.equals("scripts.bin"))
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestSubCommands(@NotNull BukkitCommandCompletionContext context) {
+        String rootCmdName = context.getConfig();
+        if (rootCmdName == null) {
+            return Collections.emptyList();
+        }
+
+        RootCommand rootCommand = this.plugin.getMVCommandManager().getRegisteredRootCommands().stream()
+                .unordered()
+                .filter(c -> c.getCommandName().equals(rootCmdName))
+                .findFirst()
+                .orElse(null);
+
+        if (rootCommand == null) {
+            return Collections.emptyList();
+        }
+
+        return rootCommand.getSubCommands().entries().stream()
+                .unordered()
+                .filter(entry -> checkPerms(context.getIssuer(), entry.getValue()))
+                .map(Map.Entry::getKey)
+                .filter(cmdName -> !cmdName.startsWith("__"))
+                .collect(Collectors.toList());
+    }
+
+    private boolean checkPerms(@NotNull CommandIssuer issuer,
+                               @NotNull RegisteredCommand<?> cmd) {
+
+        return this.plugin.getMVCommandManager().hasPermission(issuer, cmd.getRequiredPermissions());
+    }
+
+    @NotNull
+    private Collection<String> suggestMVWorlds(@NotNull BukkitCommandCompletionContext context) {
+        if (isPlayerOnly(context)) {
+            return Collections.emptyList();
+        }
+
+        return this.worldManager.getMVWorlds().parallelStream()
+                .unordered()
+                .map(MultiverseWorld::getName)
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestUnloadedWorlds(@NotNull BukkitCommandCompletionContext context) {
+        if (isPlayerOnly(context)) {
+            return Collections.emptyList();
+        }
+
+        return this.worldManager.getUnloadedWorlds();
+    }
+
+    @NotNull
+    private Collection<String> suggestPotentialWorlds(@NotNull BukkitCommandCompletionContext context) {
+        if (isPlayerOnly(context)) {
+            return Collections.emptyList();
+        }
+
+        Collection<MultiverseWorld> worlds = this.worldManager.getMVWorlds();
+        Set<String> knownWorlds = worlds.parallelStream()
+                .unordered()
+                .map(MultiverseWorld::getName)
+                .collect(Collectors.toCollection(() -> new HashSet<>(worlds.size())));
+
+        return Arrays.stream(this.plugin.getServer().getWorldContainer().listFiles()).parallel()
+                .unordered()
+                .filter(File::isDirectory)
+                .filter(file -> !knownWorlds.contains(file.getName()))
+                .map(File::getName)
+                .filter(this.worldManager::isValidWorld)
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestLocation(@NotNull BukkitCommandCompletionContext context) {
+        if (isPlayerOnly(context)) {
+            return Collections.emptyList();
+        }
+
+        Player player = context.getPlayer();
+        if (player == null) {
+            return Collections.emptyList();
+        }
+
+        DecimalFormat df = new DecimalFormat();
+        df.setMinimumFractionDigits(0);
+        df.setMaximumFractionDigits(2);
+
+        Location playerLocation = player.getLocation();
+        double coordValue;
+        switch (context.getConfig()) {
+            case "x":
+                coordValue = playerLocation.getX();
+                break;
+            case "y":
+                coordValue = playerLocation.getY();
+                break;
+            case "z":
+                coordValue = playerLocation.getZ();
+                break;
+            case "yaw":
+                coordValue = playerLocation.getYaw();
+                break;
+            case "pitch":
+                coordValue = playerLocation.getPitch();
+                break;
+            default:
+                return Collections.emptyList();
+        }
+
+        return Collections.singletonList(df.format(coordValue));
+    }
+
+    @NotNull
+    private Collection<String> suggestDestinations(@NotNull BukkitCommandCompletionContext context) {
+        if (isPlayerOnly(context)) {
+            return Collections.emptyList();
+        }
+
+        return this.plugin.getDestFactory().getIdentifiers().parallelStream()
+                .unordered()
+                .filter(id -> !id.isEmpty())
+                .map(id -> id + ":")
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestAnchors(@NotNull BukkitCommandCompletionContext context) {
+        if (isPlayerOnly(context)) {
+            return Collections.emptyList();
+        }
+
+        return this.plugin.getAnchorManager().getAnchors(context.getPlayer());
+    }
+
+    private boolean isPlayerOnly(@NotNull BukkitCommandCompletionContext context) {
+        String config = context.getConfig();
+        return config != null && context.getPlayer() == null && config.equals("playerOnly");
+    }
+
+    @NotNull
+    private Collection<String> suggestMVConfig() {
+        final Set<String> configOptions = this.plugin.getMVConfig().serialize().keySet();
+        configOptions.remove("version");
+        return configOptions;
+    }
+
+    @NotNull
+    private Collection<String> suggestGameRules() {
+        return Arrays.stream(GameRule.values())
+                .map(GameRule::getName)
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestEnvironments() {
+        return Arrays.stream(World.Environment.values())
+                .map(e -> e.toString().toLowerCase())
+                .collect(Collectors.toList());
+    }
+
+    private Collection<String> suggestSetProperties() {
+        return this.worldManager.getMVWorlds().iterator().next().getAllPropertyTypes();
+    }
+
+    @NotNull
+    private Collection<String> suggestAddProperties() {
+        return Arrays.stream(AddProperties.values())
+                .map(p -> p.toString().toLowerCase())
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestEntities() {
+        return Arrays.stream(EntityType.values())
+                .filter(e -> e.isAlive() && e.isSpawnable())
+                .map(e -> e.toString().toLowerCase())
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestPasteTypes() {
+        return Arrays.stream(PasteServiceType.values())
+                .filter(pt -> pt != PasteServiceType.GITHUB && pt != PasteServiceType.NONE)
+                .map(p -> p.toString().toLowerCase())
+                .collect(Collectors.toList());
+    }
+
+    @NotNull
+    private Collection<String> suggestToggles() {
+        return Arrays.asList("on", "off");
+    }
+}
@@ -0,0 +1,196 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BukkitCommandExecutionContext;
+import co.aikar.commands.BukkitCommandIssuer;
+import co.aikar.commands.BukkitConditionContext;
+import co.aikar.commands.CommandConditions;
+import co.aikar.commands.ConditionContext;
+import co.aikar.commands.ConditionFailedException;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.enums.AddProperties;
+import com.onarandombox.MultiverseCore.enums.WorldValidationResult;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Args input validation.
+ */
+public class MVCommandConditions {
+
+    private final MultiverseCore plugin;
+    private final MVWorldManager worldManager;
+
+    public MVCommandConditions(@NotNull MultiverseCore plugin,
+                               @NotNull CommandConditions<BukkitCommandIssuer, BukkitCommandExecutionContext, BukkitConditionContext> conditions) {
+
+        this.plugin = plugin;
+        this.worldManager = plugin.getMVWorldManager();
+
+        conditions.addCondition(String.class, "isMVWorld", this::checkIsMVWorld);
+        conditions.addCondition(String.class, "isUnloadedWorld", this::checkIsUnloadedWorld);
+        conditions.addCondition(String.class, "isWorldInConfig", this::checkIsWorldInConfig);
+        conditions.addCondition(String.class, "creatableWorldName", this::checkCreatableWorldName);
+        conditions.addCondition(String.class, "importableWorldName", this::checkImportableWorldName);
+        conditions.addCondition(String.class, "validWorldFolder", this::checkValidWorldFolder);
+        conditions.addCondition(String.class, "validAddProperty", this::checkValidAddProperty);
+        conditions.addCondition(MultiverseWorld.class, "hasWorldAccess", this::checkHasWorldAccess);
+    }
+
+    private void checkIsMVWorld(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                @NotNull BukkitCommandExecutionContext executionContext,
+                                @NotNull String worldName) {
+
+        if (!this.worldManager.isMVWorld(worldName)) {
+            throw new ConditionFailedException(String.format("World '%s' not found.", worldName));
+        }
+    }
+
+    private void checkIsUnloadedWorld(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                      @NotNull BukkitCommandExecutionContext executionContext,
+                                      @NotNull String worldName) {
+
+        if (this.worldManager.isMVWorld(worldName)) {
+            throw new ConditionFailedException(String.format("World '%s' is already loaded.", worldName));
+        }
+
+        if (!this.worldManager.getUnloadedWorlds().contains(worldName)) {
+            if (this.worldManager.isValidWorld(worldName)) {
+                CommandSender sender = executionContext.getSender();
+                sender.sendMessage(String.format("%sMultiverse does not know about world '%s' yet. Please import it with %s/mv import %s <env>%s.",
+                        ChatColor.RED, worldName, ChatColor.AQUA, worldName, ChatColor.RED));
+                sender.sendMessage(String.format("See %s/mv help import %sfor more info.",
+                        ChatColor.AQUA, ChatColor.WHITE));
+                throw new ConditionFailedException();
+            }
+            throw new ConditionFailedException(String.format("World '%s' not found.", worldName));
+        }
+    }
+
+    private void checkIsWorldInConfig(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                      @NotNull BukkitCommandExecutionContext executionContext,
+                                      @NotNull String worldName) {
+
+        if (!this.worldManager.hasUnloadedWorld(worldName, true)) {
+            throw new ConditionFailedException(String.format("World '%s' not found.", worldName));
+        }
+    }
+
+    private void checkCreatableWorldName(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                         @NotNull BukkitCommandExecutionContext executionContext,
+                                         @NotNull String worldName) {
+
+        if (this.worldManager.isMVWorld(worldName)) {
+            throw new ConditionFailedException(String.format("%sMultiverse cannot create %sanother %s%sworld named '%s'.",
+                    ChatColor.RED, ChatColor.GOLD, ChatColor.RESET, ChatColor.RED, worldName));
+        }
+
+        WorldValidationResult validationResult = this.worldManager.validateWorld(worldName);
+        validateWorldNameResult(validationResult);
+
+        if (validationResult != WorldValidationResult.DOES_NOT_EXIST && validationResult != WorldValidationResult.NOT_A_DIRECTORY) {
+            CommandSender sender = executionContext.getSender();
+            if (validationResult == WorldValidationResult.VALID) {
+                sender.sendMessage(String.format("%sWorld Folder '%s' already look like a world to me! You can try importing it with %s/mv import%s.",
+                        ChatColor.RED, worldName, ChatColor.AQUA, ChatColor.RED));
+                sender.sendMessage(String.format("See %s/mv help import %sfor more info.",
+                        ChatColor.AQUA, ChatColor.WHITE));
+                throw new ConditionFailedException();
+            }
+
+            sender.sendMessage(String.format("%sA folder already exists with this name!", ChatColor.RED));
+            throw new ConditionFailedException();
+        }
+    }
+
+    private void checkImportableWorldName(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                          @NotNull BukkitCommandExecutionContext executionContext,
+                                          @NotNull String worldName) {
+
+        if (this.worldManager.isMVWorld(worldName)) {
+            executionContext.getSender().sendMessage(String.format("%sMultiverse %s already knows about %s%s%s!",
+                    ChatColor.GREEN, ChatColor.WHITE, ChatColor.AQUA, worldName, ChatColor.WHITE));
+            throw new ConditionFailedException();
+        }
+
+        checkValidWorldFolder(context, executionContext, worldName);
+    }
+
+    private void checkValidWorldFolder(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                       @NotNull BukkitCommandExecutionContext executionContext,
+                                       @NotNull String worldName) {
+
+        WorldValidationResult validationResult = this.worldManager.validateWorld(worldName);
+        validateWorldNameResult(validationResult);
+        validateWorldFolderResult(validationResult, worldName);
+    }
+
+    private void validateWorldNameResult(WorldValidationResult validationResult) {
+        switch (validationResult) {
+            case NAME_BLACKLISTED:
+                throw new ConditionFailedException("World should not be in reserved server folders.");
+            case NAME_CONTAINS_DAT:
+                throw new ConditionFailedException("Multiverse cannot have a world name that contains '.dat'.");
+            case NAME_INVALID:
+                throw new ConditionFailedException("World name should not contain spaces or special characters! Please rename your world folder.");
+        }
+    }
+
+    private void validateWorldFolderResult(@NotNull WorldValidationResult validationResult,
+                                           @NotNull String worldName) {
+        switch (validationResult) {
+            case DOES_NOT_EXIST:
+            case NOT_A_DIRECTORY:
+                throw new ConditionFailedException(String.format("World folder '%s' does not exist.", worldName));
+            case FOLDER_LACK_DAT:
+                throw new ConditionFailedException(String.format("'%s' does not appear to be a world! It is lacking .dat file.", worldName));
+        }
+    }
+
+    private void checkValidAddProperty (@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                        @NotNull BukkitCommandExecutionContext executionContext,
+                                        @NotNull String property) {
+
+        String actionType = context.getConfig();
+        if (actionType.equalsIgnoreCase("set")) {
+            return;
+        }
+
+        try {
+            AddProperties.valueOf(property);
+        }
+        catch (IllegalArgumentException e) {
+            CommandSender sender = executionContext.getSender();
+            sender.sendMessage(String.format("%sSorry, you can't use %s with '%s'.",
+                    ChatColor.RED, actionType, property));
+            sender.sendMessage(String.format("%sPlease visit our Github Wiki for more information: https://goo.gl/q1h01S",
+                    ChatColor.AQUA));
+            throw new ConditionFailedException();
+        }
+    }
+
+    private void checkHasWorldAccess(@NotNull ConditionContext<BukkitCommandIssuer> context,
+                                     @NotNull BukkitCommandExecutionContext executionContext,
+                                     @NotNull MultiverseWorld world) {
+
+        Player player = executionContext.getPlayer();
+        if (player == null) {
+            return;
+        }
+
+        if (!this.plugin.getMVPerms().canEnterWorld(player, world)) {
+            throw new ConditionFailedException(String.format("You aren't allowed to access to world '%s%s'!",
+                    world.getColoredWorldString(), ChatColor.RED));
+        }
+    }
+}
@@ -0,0 +1,416 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BukkitCommandExecutionContext;
+import co.aikar.commands.InvalidCommandArgument;
+import co.aikar.commands.PaperCommandContexts;
+import co.aikar.commands.annotation.Values;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.api.MVDestination;
+import com.onarandombox.MultiverseCore.api.MVWorldManager;
+import com.onarandombox.MultiverseCore.api.MultiverseWorld;
+import com.onarandombox.MultiverseCore.commands.EnvironmentCommand;
+import com.onarandombox.MultiverseCore.commandtools.context.GameRuleProperty;
+import com.onarandombox.MultiverseCore.commandtools.context.PageFilter;
+import com.onarandombox.MultiverseCore.commandtools.context.RequiredPlayer;
+import com.onarandombox.MultiverseCore.destination.InvalidDestination;
+import com.onarandombox.MultiverseCore.displaytools.ContentFilter;
+import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceType;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.GameRule;
+import org.bukkit.World;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+/**
+ * Parse args into objects.
+ */
+public class MVCommandContexts extends PaperCommandContexts {
+
+    private final MultiverseCore plugin;
+    private final MVWorldManager worldManager;
+
+    private static final Pattern UUID_REGEX = Pattern.compile("[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[34][0-9a-fA-F]{3}-[89ab][0-9a-fA-F]{3}-[0-9a-fA-F]{12}");
+    private static final Pattern TRIM_REGEX = Pattern.compile("^[./\\\\]+");
+
+    public MVCommandContexts(@NotNull MVCommandManager manager,
+                             @NotNull MultiverseCore plugin) {
+
+        super(manager);
+        this.plugin = plugin;
+        this.worldManager = plugin.getMVWorldManager();
+
+        registerContext(RequiredPlayer.class, this::deriveRequiredPlayer);
+        registerIssuerOnlyContext(Player.class, this::derivePlayer);
+
+        registerIssuerAwareContext(MultiverseWorld.class, this::deriveMultiverseWorld);
+        registerContext(World.Environment.class, this::deriveEnvironment);
+        registerIssuerAwareContext(GameRuleProperty.class, this::deriveGameRuleProperty);
+        registerIssuerAwareContext(MVDestination.class, this::deriveMVDestination);
+        registerIssuerAwareContext(PasteServiceType.class, this::derivePasteServiceType);
+        registerOptionalContext(String.class, this::deriveString);
+        registerIssuerAwareContext(ContentFilter.class, this::deriveContentFilter);
+        registerOptionalContext(PageFilter.class, this::derivePageFilter);
+    }
+
+    @NotNull
+    private Player derivePlayer(@NotNull BukkitCommandExecutionContext context) {
+        Player player = context.getPlayer();
+        if (player == null) {
+            throw new InvalidCommandArgument("You must be a player to run this command.");
+        }
+        return player;
+    }
+
+    @NotNull
+    private RequiredPlayer deriveRequiredPlayer(BukkitCommandExecutionContext context) {
+        String playerIdentifier = context.getFirstArg();
+        Player player = getPlayerFromValue(context.getSender(), playerIdentifier);
+        if (player == null) {
+            throw new InvalidCommandArgument("Invalid player name '" + playerIdentifier + "'!");
+        }
+        return new RequiredPlayer(player);
+    }
+
+    @Nullable
+    private MultiverseWorld deriveMultiverseWorld(@NotNull BukkitCommandExecutionContext context) {
+        if (!context.hasFlag("other")) {
+            return getPlayerWorld(
+                    context.getPlayer(),
+                    context.isOptional()
+                    , "You cannot run this command from console."
+            );
+        }
+
+        String worldName = context.getFirstArg();
+        if (worldName == null) {
+            if (context.hasFlag("defaultself")) {
+                return getPlayerWorld(
+                        context.getPlayer(),
+                        context.isOptional()
+                        , "You need to specific a world name from console."
+                );
+            }
+            if (context.isOptional()) {
+                return null;
+            }
+            throw new InvalidCommandArgument("You need to specific a world name.");
+        }
+
+        MultiverseWorld world = getWorld(context.getSender(), worldName, !context.hasFlag("ignoreunload"));
+        if (world == null) {
+            if (context.hasFlag("fallbackself")) {
+                return getPlayerWorld(context.getPlayer(),
+                        context.isOptional(),
+                        String.format("World '%s' not found.", worldName));
+            }
+            if (this.worldManager.isValidWorld(worldName)) {
+                CommandSender sender = context.getSender();
+                sender.sendMessage(String.format("%sMultiverse does not know about world '%s' yet. Please import it with %s/mv import %s <env>%s.",
+                        ChatColor.RED, worldName, ChatColor.AQUA, worldName, ChatColor.RED));
+                sender.sendMessage(String.format("See %s/mv help import %sfor more info.",
+                        ChatColor.AQUA, ChatColor.WHITE));
+                throw new InvalidCommandArgument();
+            }
+            throw new InvalidCommandArgument(String.format("World '%s' not found.", worldName), false);
+        }
+
+        context.popFirstArg();
+        return world;
+    }
+
+    @Nullable
+    private MultiverseWorld getWorld(@NotNull CommandSender sender,
+                                     @NotNull String worldName,
+                                     boolean checkUnloaded) {
+
+        MultiverseWorld targetWorld = this.worldManager.getMVWorld(worldName);
+        if (targetWorld != null) {
+            return targetWorld;
+        }
+
+        //TODO: API should have a isUnloadedWorld method.
+        if (checkUnloaded && this.worldManager.getUnloadedWorlds().contains(worldName)) {
+            sender.sendMessage(String.format("%sWorld '%s' exists, but it is unloaded!", ChatColor.RED, worldName));
+            sender.sendMessage(String.format("You can load it with: %s/mv load %s", ChatColor.AQUA, worldName));
+            throw new InvalidCommandArgument();
+        }
+
+        return null;
+    }
+
+    @Nullable
+    private MultiverseWorld getPlayerWorld(@Nullable Player player,
+                                           boolean allowNull,
+                                           @NotNull String errorReason) {
+
+        if (player == null) {
+            if (allowNull) {
+                return null;
+            }
+            throw new InvalidCommandArgument(errorReason, false);
+        }
+
+        MultiverseWorld targetWorld = this.worldManager.getMVWorld(player.getWorld());
+        if (targetWorld == null) {
+            player.sendMessage(String.format("%sMultiverse doesn't know about world '%s%s%s' that '%s%s%s' is in.",
+                    ChatColor.RED, ChatColor.DARK_AQUA, player.getWorld().getName(), ChatColor.RED,
+                    ChatColor.AQUA, player.getName(), ChatColor.RED));
+
+            player.sendMessage(String.format("You need to import the world with %s/mv import %s %s",
+                    ChatColor.DARK_AQUA, player.getWorld().getName(), player.getWorld().getEnvironment()));
+
+            throw new InvalidCommandArgument();
+        }
+
+        return targetWorld;
+    }
+
+    @Nullable
+    private Player getPlayerFromSelf(@NotNull BukkitCommandExecutionContext context, String errorReason) {
+        Player self = context.getPlayer();
+        if (self == null && !context.isOptional()) {
+            throw new InvalidCommandArgument(errorReason);
+        }
+        return self;
+    }
+
+    /**
+     * Parse Player from string.
+     * Supports player name, UUID and selectors.
+     *
+     * @param sender            Sender use to parse vanilla selectors.
+     * @param playerIdentifier  Text to parse into a Player object.
+     * @return A Player object if found, null otherwise.
+     */
+    @Nullable
+    public Player getPlayerFromValue(@NotNull CommandSender sender,
+                                     @Nullable String playerIdentifier) {
+
+        if (playerIdentifier == null) {
+            return null;
+        }
+
+        Player player = getPlayerBySelector(sender, playerIdentifier);
+        if (player == null) {
+            player = Bukkit.getPlayerExact(playerIdentifier);
+        }
+        if (player == null) {
+            player = getPlayerByUUID(playerIdentifier);
+        }
+
+        return player;
+    }
+
+    @Nullable
+    private Player getPlayerBySelector(@NotNull CommandSender sender,
+                                       @NotNull String playerIdentifier) {
+
+        if (playerIdentifier.charAt(0) != '@') {
+            return null;
+        }
+
+        List<Player> matchedPlayers;
+        try {
+            matchedPlayers = this.plugin.getServer().selectEntities(sender, playerIdentifier).parallelStream()
+                    .unordered()
+                    .filter(e -> e instanceof Player)
+                    .map(e -> ((Player) e))
+                    .collect(Collectors.toList());
+        }
+        catch (IllegalArgumentException e) {
+            e.printStackTrace();
+            throw new InvalidCommandArgument(String.format("Error parsing selector '%s' for %s! See console for more details",
+                    playerIdentifier, sender.getName()));
+        }
+        if (matchedPlayers.isEmpty()) {
+            throw new InvalidCommandArgument(String.format("No player found with selector '%s' for %s",
+                    playerIdentifier, sender.getName()));
+        }
+        if (matchedPlayers.size() > 1) {
+            throw new InvalidCommandArgument(String.format("Error parsing selector '%s' for %s. ambiguous result (more than one player matched) - %s",
+                    playerIdentifier, sender.getName(), matchedPlayers.toString()));
+        }
+
+        return matchedPlayers.get(0);
+    }
+
+    @Nullable
+    private Player getPlayerByUUID(@NotNull String playerIdentifier) {
+        if (!UUID_REGEX.matcher(playerIdentifier).matches()) {
+            return null;
+        }
+        UUID playerUUID;
+        try {
+            playerUUID = UUID.fromString(playerIdentifier);
+        } catch (Exception e) {
+            return null;
+        }
+        return Bukkit.getPlayer(playerUUID);
+    }
+
+    @NotNull
+    private World.Environment deriveEnvironment(@NotNull BukkitCommandExecutionContext context) {
+        String env = context.popFirstArg();
+
+        if (env.equalsIgnoreCase("NORMAL") || env.equalsIgnoreCase("WORLD")) {
+            env = "NORMAL";
+        }
+        else if (env.equalsIgnoreCase("HELL") || env.equalsIgnoreCase("NETHER")) {
+            env = "NETHER";
+        }
+        else if (env.equalsIgnoreCase("END") || env.equalsIgnoreCase("THEEND") || env.equalsIgnoreCase("STARWARS")) {
+            env = "THE_END";
+        }
+
+        try {
+            return World.Environment.valueOf(env);
+        }
+        catch (IllegalArgumentException e) {
+            CommandSender sender = context.getSender();
+            sender.sendMessage(String.format("%s'%s' is not a valid environment.", ChatColor.RED, env));
+            EnvironmentCommand.showEnvironments(sender);
+            throw new InvalidCommandArgument(false);
+        }
+    }
+
+    @NotNull
+    private GameRuleProperty<?> deriveGameRuleProperty(@NotNull BukkitCommandExecutionContext context) {
+        int argLength = context.getArgs().size();
+        if (argLength == 0) {
+            throw new InvalidCommandArgument("You need to specify a game rule property and value to set.");
+        }
+        if (argLength == 1) {
+            throw new InvalidCommandArgument("You need to specify a value to set.");
+        }
+
+        String ruleString = context.popFirstArg();
+        GameRule<?> gameRule = GameRule.getByName(ruleString);
+        if (gameRule == null) {
+            throw new InvalidCommandArgument(String.format("'%s' is not a valid gamerule.", ruleString));
+        }
+
+        Class<?> ruleType = gameRule.getType();
+        String value = context.getFirstArg();
+        Object result = getResolver(ruleType).getContext(context);
+        if (result == null) {
+            context.getSender().sendMessage(String.format("%s'%s' is not a valid value.", ChatColor.RED, value));
+            context.getSender().sendMessage(String.format("%sValue need to be a %s", ChatColor.RED, ruleType.getTypeName()));
+            throw new InvalidCommandArgument();
+        }
+        if (result instanceof Integer && ((int) result) < 0) {
+            throw new InvalidCommandArgument("Value need to be a positive number.");
+        }
+
+        return new GameRuleProperty(gameRule, result);
+    }
+
+    @NotNull
+    private MVDestination deriveMVDestination(@NotNull BukkitCommandExecutionContext context) {
+        String destString = context.popFirstArg();
+        if (destString == null) {
+            throw new InvalidCommandArgument("Please specify a destination.");
+        }
+
+        MVDestination destination = this.plugin.getDestFactory().getDestination(destString);
+        if (destination instanceof InvalidDestination) {
+            throw new  InvalidCommandArgument(String.format("No such destination '%s' found.", destString));
+        }
+        return destination;
+    }
+
+    @Nullable
+    private String deriveString(@NotNull BukkitCommandExecutionContext context) {
+        if (context.hasAnnotation(Values.class)) {
+            return context.popFirstArg();
+        }
+
+        String string = context.popFirstArg();
+        if (string == null) {
+            if (!context.isOptional()) {
+                String argType = context.getFlagValue("type", "string");
+                throw new InvalidCommandArgument(String.format("You need to specify a %s.", argType));
+            }
+            return null;
+        }
+
+        if (context.hasFlag("trim")) {
+            return trimWorldName(string);
+        }
+
+        return string;
+    }
+
+    @NotNull
+    private String trimWorldName(@NotNull String worldName) {
+        // Removes relative paths.
+        return TRIM_REGEX.matcher(worldName).replaceAll("");
+    }
+
+    @NotNull
+    private PasteServiceType derivePasteServiceType(BukkitCommandExecutionContext context) {
+        String pasteType = context.popFirstArg();
+        if (pasteType == null) {
+            return PasteServiceType.NONE;
+        }
+
+        try {
+            return PasteServiceType.valueOf(pasteType.toUpperCase());
+        }
+        catch (IllegalArgumentException e) {
+            throw new InvalidCommandArgument(String.format("Invalid paste service type '%s'.", pasteType));
+        }
+    }
+
+    @NotNull
+    private ContentFilter deriveContentFilter(@NotNull BukkitCommandExecutionContext context) {
+        String filterString = context.popFirstArg();
+        return (filterString == null) ? ContentFilter.DEFAULT : new ContentFilter(filterString);
+    }
+
+    @NotNull
+    private PageFilter derivePageFilter(@NotNull BukkitCommandExecutionContext context) {
+        int argLength = context.getArgs().size();
+        if (argLength == 0) {
+            return new PageFilter(ContentFilter.DEFAULT, 1);
+        }
+        if (argLength == 1) {
+            String pageOrFilter = context.popFirstArg();
+            Optional<Integer> page = tryParseInt(pageOrFilter);
+            return page.map(pageNum -> new PageFilter(ContentFilter.DEFAULT, pageNum))
+                    .orElseGet(() -> new PageFilter(new ContentFilter(pageOrFilter), 1));
+        }
+
+        String filter = context.popFirstArg();
+        String pageString = context.popFirstArg();
+        Optional<Integer> page = tryParseInt(pageString);
+        if (!page.isPresent()) {
+            throw new InvalidCommandArgument(String.format("'%s' is not a number.", pageString), false);
+        }
+        return new PageFilter(new ContentFilter(filter), page.get());
+    }
+
+    private Optional<Integer> tryParseInt(String value) {
+        try {
+            return Optional.of(Integer.parseInt(value));
+        }
+        catch (NumberFormatException e) {
+            return Optional.empty();
+        }
+    }
+}
@@ -0,0 +1,275 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BaseCommand;
+import co.aikar.commands.CommandHelp;
+import co.aikar.commands.CommandIssuer;
+import co.aikar.commands.HelpEntry;
+import co.aikar.commands.PaperCommandManager;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.commands.AnchorCommand;
+import com.onarandombox.MultiverseCore.commands.BedCommand;
+import com.onarandombox.MultiverseCore.commands.CheckCommand;
+import com.onarandombox.MultiverseCore.commands.CloneCommand;
+import com.onarandombox.MultiverseCore.commands.ConfigCommand;
+import com.onarandombox.MultiverseCore.commands.ConfirmCommand;
+import com.onarandombox.MultiverseCore.commands.CoordCommand;
+import com.onarandombox.MultiverseCore.commands.CreateCommand;
+import com.onarandombox.MultiverseCore.commands.DebugCommand;
+import com.onarandombox.MultiverseCore.commands.DeleteCommand;
+import com.onarandombox.MultiverseCore.commands.EnvironmentCommand;
+import com.onarandombox.MultiverseCore.commands.GameRuleCommand;
+import com.onarandombox.MultiverseCore.commands.GeneratorCommand;
+import com.onarandombox.MultiverseCore.commands.ImportCommand;
+import com.onarandombox.MultiverseCore.commands.InfoCommand;
+import com.onarandombox.MultiverseCore.commands.ListCommand;
+import com.onarandombox.MultiverseCore.commands.LoadCommand;
+import com.onarandombox.MultiverseCore.commands.ModifyCommand;
+import com.onarandombox.MultiverseCore.commands.PurgeCommand;
+import com.onarandombox.MultiverseCore.commands.RegenCommand;
+import com.onarandombox.MultiverseCore.commands.ReloadCommand;
+import com.onarandombox.MultiverseCore.commands.RemoveCommand;
+import com.onarandombox.MultiverseCore.commands.RootCommand;
+import com.onarandombox.MultiverseCore.commands.ScriptCommand;
+import com.onarandombox.MultiverseCore.commands.SetSpawnCommand;
+import com.onarandombox.MultiverseCore.commands.SilentCommand;
+import com.onarandombox.MultiverseCore.commands.SpawnCommand;
+import com.onarandombox.MultiverseCore.commands.SubModulesCommand;
+import com.onarandombox.MultiverseCore.commands.TeleportCommand;
+import com.onarandombox.MultiverseCore.commands.UnloadCommand;
+import com.onarandombox.MultiverseCore.commands.UsageCommand;
+import com.onarandombox.MultiverseCore.commands.VersionCommand;
+import com.onarandombox.MultiverseCore.commands.WhoCommand;
+import com.onarandombox.MultiverseCore.commandtools.queue.CommandQueueManager;
+import com.onarandombox.MultiverseCore.displaytools.ColorAlternator;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.PluginDescriptionFile;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+/**
+ * Heart of Multiverse Command Handler.
+ */
+public class MVCommandManager extends PaperCommandManager {
+
+    private final MultiverseCore plugin;
+    private final CommandQueueManager commandQueueManager;
+    private final Map<String, BaseCommand> subModuleRootCommands;
+
+    private static final Pattern PERMISSION_SPLIT = Pattern.compile(",");
+
+    public MVCommandManager(@NotNull MultiverseCore plugin) {
+        super(plugin);
+        this.plugin = plugin;
+        this.commandQueueManager = new CommandQueueManager(plugin);
+        this.subModuleRootCommands = new HashMap<>(3);
+        new MVCommandConditions(plugin, getCommandConditions());
+
+        // Setup help command
+        enableUnstableAPI("help");
+        setDefaultHelpPerPage(6);
+
+        // General plugin command
+        registerCommand(new RootCommand(this.plugin));
+        registerCommand(new UsageCommand(this.plugin));
+        registerCommand(new VersionCommand(this.plugin));
+
+        // World commands
+        registerCommand(new CreateCommand(this.plugin));
+        registerCommand(new ImportCommand(this.plugin));
+        registerCommand(new LoadCommand(this.plugin));
+        registerCommand(new UnloadCommand(this.plugin));
+        registerCommand(new RemoveCommand(this.plugin));
+        registerCommand(new CloneCommand(this.plugin));
+        registerCommand(new RegenCommand(this.plugin));
+        registerCommand(new DeleteCommand(this.plugin));
+        registerCommand(new ConfirmCommand(this.plugin));
+
+        // Properties management commands
+        registerCommand(new ConfigCommand(this.plugin));
+        registerCommand(new GameRuleCommand(this.plugin));
+        registerCommand(new ModifyCommand(this.plugin));
+        registerCommand(new SetSpawnCommand(this.plugin));
+        registerCommand(new PurgeCommand(this.plugin));
+
+        // Show information commands
+        registerCommand(new InfoCommand(this.plugin));
+        registerCommand(new CoordCommand(this.plugin));
+        registerCommand(new EnvironmentCommand(this.plugin));
+        registerCommand(new GeneratorCommand(this.plugin));
+        registerCommand(new ListCommand(this.plugin));
+        registerCommand(new WhoCommand(this.plugin));
+
+        // Teleport commands
+        registerCommand(new TeleportCommand(this.plugin));
+        registerCommand(new AnchorCommand(this.plugin));
+        registerCommand(new BedCommand(this.plugin));
+        registerCommand(new SpawnCommand(this.plugin));
+
+        // Misc commands
+        registerCommand(new DebugCommand(this.plugin));
+        registerCommand(new CheckCommand(this.plugin));
+        registerCommand(new ReloadCommand(this.plugin));
+        registerCommand(new SilentCommand(this.plugin));
+        registerCommand(new ScriptCommand(this.plugin));
+
+        // Sub-modules
+        addAvailableSubModule("mvnp", new SubModulesCommand.NetherPortals());
+        addAvailableSubModule("mvp", new SubModulesCommand.Portals());
+        addAvailableSubModule("mvinv", new SubModulesCommand.Inventories());
+    }
+
+    /**
+     * Use for download link suggestion for sub-module
+     *
+     * @param moduleName  A sub-module for Multiverse.
+     * @param cmd         Command to register.
+     */
+    private void addAvailableSubModule(@NotNull String moduleName,
+                                       @NotNull BaseCommand cmd) {
+
+        subModuleRootCommands.put(moduleName, cmd);
+        registerCommand(cmd);
+    }
+
+    /**
+     * Replace suggest download with actual command from sub-module.
+     *
+     * @param moduleName  A sub-module for Multiverse.
+     * @param cmd         Command to register.
+     */
+    public void registerSubModule(@NotNull String moduleName,
+                                  @NotNull BaseCommand cmd) {
+
+        unregisterCommand(subModuleRootCommands.remove(moduleName));
+        registerCommand(cmd);
+    }
+
+    @Override
+    public synchronized MVCommandContexts getCommandContexts() {
+        if (this.contexts == null) {
+            this.contexts = new MVCommandContexts(this, plugin);
+        }
+        return (MVCommandContexts) this.contexts;
+    }
+
+    @Override
+    public synchronized MVCommandCompletions getCommandCompletions() {
+        if (this.completions == null) {
+            this.completions = new MVCommandCompletions(this, plugin);
+        }
+        return (MVCommandCompletions) this.completions;
+    }
+
+    /**
+     * Change default implementation to be able to choose from OR / AND
+     */
+    @Override
+    public boolean hasPermission(@NotNull CommandIssuer issuer,
+                                 @Nullable Set<String> permissions) {
+
+        if (permissions == null || permissions.isEmpty()) {
+            return true;
+        }
+
+        return (permissions.contains("AND"))
+                ? andPermissionCheck(issuer, permissions)
+                : orPermissionCheck(issuer, permissions);
+    }
+
+    private boolean orPermissionCheck(@NotNull CommandIssuer issuer,
+                                      @NotNull Set<String> permissions) {
+
+        return permissions.stream()
+                .unordered()
+                .anyMatch(permission -> hasPermission(issuer, permission));
+    }
+
+    private boolean andPermissionCheck(@NotNull CommandIssuer issuer,
+                                       @NotNull Set<String> permissions) {
+
+        return permissions.stream()
+                .unordered()
+                .allMatch(permission -> hasPermission(issuer, permission));
+    }
+
+    /**
+     * Change default implementation to be able to choose from OR / AND
+     */
+    @Override
+    public boolean hasPermission(@NotNull CommandIssuer issuer,
+                                 @Nullable String permission) {
+
+        if (permission == null || permission.isEmpty()) {
+            return true;
+        }
+        if (permission.startsWith("AND:")) {
+            return Arrays.stream(PERMISSION_SPLIT.split(permission.substring(4)))
+                    .unordered()
+                    .allMatch(issuer::hasPermission);
+        }
+        return Arrays.stream(PERMISSION_SPLIT.split(permission))
+                .unordered()
+                .anyMatch(issuer::hasPermission);
+    }
+
+    /**
+     * Gets {@link CommandQueueManager}.
+     *
+     * @return {@link CommandQueueManager}.
+     */
+    public CommandQueueManager getQueueManager() {
+        return commandQueueManager;
+    }
+
+    /**
+     * Standardise usage command formatting for all mv modules.
+     *
+     * @param help The target {@link CommandHelp}.
+     */
+    public void showUsage(@NotNull CommandHelp help) {
+        List<HelpEntry> entries = help.getHelpEntries();
+
+        if (entries.size() == 1) {
+            this.plugin.getMVCommandManager().getHelpFormatter().showDetailedHelp(help, entries.get(0));
+            return;
+        }
+
+        help.showHelp();
+    }
+
+    /**
+     * Standardise root command for all mv modules.
+     *
+     * @param sender       Sender to send the info to.
+     * @param description  mv-module's description and info.
+     * @param color        Special colour for each mv-module.
+     * @param rootCmd      mv-module's root command name.
+     */
+    public void showPluginInfo(@NotNull CommandSender sender,
+                               @NotNull PluginDescriptionFile description,
+                               @NotNull ColorAlternator color,
+                               @NotNull String rootCmd) {
+
+        sender.sendMessage(String.format("%s%s %s| %sv%s",
+                color.getThisColor(), description.getName(), ChatColor.DARK_GRAY,
+                color.getThatColor(), description.getVersion()));
+
+        sender.sendMessage(String.format("%sSee %s/%s help %sfor commands available.",
+                ChatColor.DARK_GREEN, ChatColor.GREEN, rootCmd, ChatColor.DARK_GREEN));
+    }
+}
@@ -0,0 +1,23 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.CommandCompletionContext;
+import co.aikar.commands.RegisteredCommand;
+import com.onarandombox.MultiverseCore.utils.ReflectHelper;
+
+import java.lang.reflect.Field;
+
+public class MVCommandReflect {
+
+    private static final Field commandScope;
+    private static final Field commandField;
+
+    static {
+        commandField = ReflectHelper.getField(CommandCompletionContext.class, "command");
+        commandScope = ReflectHelper.getField(RegisteredCommand.class, "scope");
+    }
+
+    public static MultiverseCommand getCommandCompletionContextCommand(CommandCompletionContext context) {
+        RegisteredCommand registeredCommand = ReflectHelper.getFieldValue(context, commandField);
+        return ReflectHelper.getFieldValue(registeredCommand, commandScope);
+    }
+}
@@ -0,0 +1,21 @@
+package com.onarandombox.MultiverseCore.commandtools;
+
+import co.aikar.commands.BaseCommand;
+import com.onarandombox.MultiverseCore.commandtools.flag.FlagGroup;
+
+public class MultiverseCommand extends BaseCommand {
+
+    private FlagGroup flagGroup;
+
+    public MultiverseCommand() {
+        super();
+    }
+
+    public FlagGroup getFlagGroup() {
+        return flagGroup;
+    }
+
+    public void setFlagGroup(FlagGroup flagGroup) {
+        this.flagGroup = flagGroup;
+    }
+}
@@ -0,0 +1,39 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools.context;
+
+import org.bukkit.GameRule;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Single key value pair for a game rule.
+ *
+ * @param <T> Type of GameRule property.
+ */
+public class GameRuleProperty<T> {
+
+    private final GameRule<T> gameRule;
+    private final T value;
+
+    public GameRuleProperty(@NotNull GameRule<T> gameRule,
+                            @NotNull T value) {
+
+        this.gameRule = gameRule;
+        this.value = value;
+    }
+
+    @NotNull
+    public GameRule<T> getGameRule() {
+        return gameRule;
+    }
+
+    @NotNull
+    public T getValue() {
+        return value;
+    }
+}
@@ -0,0 +1,34 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools.context;
+
+import com.onarandombox.MultiverseCore.displaytools.ContentFilter;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Filter and paging.
+ */
+public class PageFilter {
+    private final ContentFilter filter;
+    private final int page;
+
+    public PageFilter(@NotNull ContentFilter filter,
+                      int page) {
+        this.filter = filter;
+        this.page = page;
+    }
+
+    @NotNull
+    public ContentFilter getFilter() {
+        return filter;
+    }
+
+    public int getPage() {
+        return page;
+    }
+}
@@ -0,0 +1,16 @@
+package com.onarandombox.MultiverseCore.commandtools.context;
+
+import org.bukkit.entity.Player;
+
+public class RequiredPlayer {
+
+    private final Player player;
+
+    public RequiredPlayer(Player player) {
+        this.player = player;
+    }
+
+    public Player get() {
+        return player;
+    }
+}
@@ -0,0 +1,4 @@
+/**
+ * Classes derived from parsing command args and context.
+ */
+package com.onarandombox.MultiverseCore.commandtools.context;
@@ -0,0 +1,162 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * <p>Represents a flag that can be used in commands. This works as a key value pair.</p>
+ *
+ * <p>Key is the {@link #identifier} and {@link #aliases} set.</p>
+ * <p>Value is the {@link T} parsed based on 3 scenarios during command input:</p>
+ * <ol>
+ *     <li>Flag completely not present. {@link #getDefaultValue()}</li>
+ *     <li>Flag key present but no value. {@link #getValue()}</li>
+ *     <li>Flag key and value present. {@link #getValue(String)}</li>
+ * </ol>
+ *
+ * @param <T>   The flag Type.
+ */
+public abstract class CommandFlag<T> {
+
+    protected final String name;
+    protected final String identifier;
+    protected final Class<T> type;
+    protected final ValueRequirement valueRequirement;
+    protected final Collection<String> aliases;
+
+    protected CommandFlag(@NotNull String name,
+                          @NotNull String identifier,
+                          @NotNull Class<T> type,
+                          @NotNull ValueRequirement valueRequirement) {
+
+        this.name = name;
+        this.identifier = identifier;
+        this.type = type;
+        this.valueRequirement = valueRequirement;
+        this.aliases = new ArrayList<>();
+    }
+
+    /**
+     * Gets name of the Command Flag.
+     *
+     * @return The Command Flag name.
+     */
+    @NotNull
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * Gets identifier of the Command Flag.
+     *
+     * @return The Command Flag identifier.
+     */
+    @NotNull
+    public String getIdentifier() {
+        return this.identifier;
+    }
+
+    /**
+     * Gets {@link T} Type of the Command Flag.
+     *
+     * @return The Command Flag type.
+     */
+    @NotNull
+    public Class<T> getType() {
+        return this.type;
+    }
+
+    /**
+     * Gets the requirements of this Command Flag user input value.
+     *
+     * @return The {@link ValueRequirement}.
+     */
+    @NotNull
+    public ValueRequirement getValueRequirement() {
+        return this.valueRequirement;
+    }
+
+    /**
+     * Gets all the alternative key identifiers set for this Command Flag.
+     *
+     * @return Collection of aliases.
+     */
+    @NotNull
+    public Collection<String> getAliases() {
+        return this.aliases;
+    }
+
+    /**
+     * Add alternative key identifiers for this Command Flag.
+     *
+     * @param aliases   Alias(es) to be added.
+     * @return A {@link CommandFlag}.
+     */
+    public CommandFlag<T> addAliases(String...aliases) {
+        Collections.addAll(this.aliases, aliases);
+        return this;
+    }
+
+    /**
+     * Tab-complete suggestion for this Command Flag values.
+     *
+     * @return Collection of suggested values available.
+     */
+    public abstract Collection<String> suggestValue();
+
+    /**
+     * When this Command Flag can get value by a user input.
+     *
+     * @return The {@link T} value.
+     */
+    public abstract T getValue(@NotNull String input) throws FlagParseFailedException;
+
+    /**
+     * When this Command Flag user input value is null/not present.
+     *
+     * @return The {@link T} value.
+     */
+    public T getValue() throws FlagParseFailedException {
+        return null;
+    }
+
+    /**
+     * When this Command Flag is not present in command input.
+     *
+     * @return The {@link T} value.
+     */
+    public T getDefaultValue() {
+        return null;
+    }
+
+    @Override
+    public String toString() {
+        return "CommandFlag{" +
+                "name='" + name + '\'' +
+                ", identifier='" + identifier + '\'' +
+                ", type=" + type +
+                ", valueRequirement=" + valueRequirement +
+                ", aliases=" + aliases +
+                '}';
+    }
+
+    public enum ValueRequirement {
+        /**
+         * No user input needed for value.
+         */
+        NONE,
+
+        /**
+         * User input for value is optional.
+         */
+        OPTIONAL,
+
+        /**
+         * User input is required for Command Flag value.
+         */
+        REQUIRED
+    }
+}
@@ -0,0 +1,221 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+import co.aikar.commands.InvalidCommandArgument;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.utils.webpaste.PasteServiceType;
+import org.bukkit.Bukkit;
+import org.bukkit.WorldType;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.stream.Collectors;
+
+public class CoreFlags {
+
+    private static MultiverseCore multiverse;
+
+    public static void setCoreInstance(MultiverseCore plugin) {
+        multiverse = plugin;
+    }
+
+    /**
+     * Flag for custom seed.
+     */
+    public static final CommandFlag<String> SEED = new RequiredCommandFlag<String>
+            ("Seed", "--seed", String.class) {
+        @Override
+        public Collection<String> suggestValue() {
+            return Collections.singleton(String.valueOf(new Random().nextLong()));
+        }
+
+        @Override
+        public String getValue(@NotNull String input) throws FlagParseFailedException {
+            return input;
+        }
+    }.addAliases("-s");
+
+    /**
+     * Flag for custom seed. No value means random seed.
+     */
+    public static final CommandFlag<String> RANDOM_SEED = new OptionalCommandFlag<String>
+            ("Seed", "--seed", String.class) {
+        @Override
+        public Collection<String> suggestValue() {
+            return Collections.singletonList(String.valueOf(new Random().nextLong()));
+        }
+
+        @Override
+        public String getValue(@NotNull String input) throws FlagParseFailedException {
+            return input;
+        }
+    }.addAliases("-s");
+
+    /**
+     * Flag for world type used.
+     */
+    public static final CommandFlag<WorldType> WORLD_TYPE = new RequiredCommandFlag<WorldType>
+            ("WorldType", "--type", WorldType.class) {
+
+        private final Map<String, WorldType> typeAlias = new HashMap<String, WorldType>(4){{
+            put("normal", WorldType.NORMAL);
+            put("flat", WorldType.FLAT);
+            put("largebiomes", WorldType.LARGE_BIOMES);
+            put("amplified", WorldType.AMPLIFIED);
+        }};
+
+        @Override
+        public Collection<String> suggestValue() {
+            return typeAlias.keySet();
+        }
+
+        @Override
+        public WorldType getValue(@NotNull String input) throws FlagParseFailedException {
+            WorldType type = typeAlias.get(input);
+            if (type != null) {
+                return type;
+            }
+            try {
+                return WorldType.valueOf(input.toUpperCase());
+            }
+            catch (IllegalArgumentException e) {
+                throw new FlagParseFailedException("'%s' is not a valid. See /mv env for available World Type.", input);
+            }
+        }
+
+        @Override
+        public WorldType getDefaultValue() {
+            return WorldType.NORMAL;
+        }
+    }.addAliases("-t");
+
+    /**
+     * Flag for world generator.
+     */
+    public static final CommandFlag<String> GENERATOR = new RequiredCommandFlag<String>
+            ("Generator", "--gen", String.class) {
+        @Override
+        public Collection<String> suggestValue() {
+            return Arrays.stream(Bukkit.getServer().getPluginManager().getPlugins())
+                    .filter(Plugin::isEnabled)
+                    .filter(plugin -> multiverse.getUnsafeCallWrapper().wrap(
+                            () -> plugin.getDefaultWorldGenerator("world", ""),
+                            plugin.getName(),
+                            "Get generator"
+                    ) != null)
+                    .map(plugin -> plugin.getDescription().getName())
+                    .collect(Collectors.toList());
+        }
+
+        @Override
+        public String getValue(@NotNull String input) throws FlagParseFailedException {
+            String[] genArray = input.split(":");
+            String generator = genArray[0];
+            String generatorId = (genArray.length > 1) ? genArray[1] : "";
+            try {
+                if (multiverse.getMVWorldManager().getChunkGenerator(generator, generatorId, "test") == null) {
+                    throw new Exception();
+                }
+            } catch (Exception e) {
+                throw new FlagParseFailedException("Invalid generator string '%s'. See /mv gens for available generators.", input);
+            }
+            return input;
+        }
+    }.addAliases("-g");
+
+    /**
+     * Flag to toggle if world should generate structures.
+     */
+    public static final CommandFlag<Boolean> GENERATE_STRUCTURES = new RequiredCommandFlag<Boolean>
+            ("GenerateStructures", "--structures", Boolean.class) {
+        @Override
+        public Collection<String> suggestValue() {
+            return Arrays.asList("true", "false");
+        }
+
+        @Override
+        public Boolean getValue(@NotNull String input) throws FlagParseFailedException {
+            return input.equalsIgnoreCase("true");
+        }
+
+        @Override
+        public Boolean getDefaultValue() {
+            return true;
+        }
+    }.addAliases("--structure", "-a");
+
+    /**
+     * Flag to toggle if world spawn should be adjusted.
+     */
+    public static final CommandFlag<Boolean> SPAWN_ADJUST = new NoValueCommandFlag<Boolean>
+            ("AdjustSpawn", "--dont-adjust-spawn", Boolean.class) {
+        @Override
+        public Boolean getValue() throws FlagParseFailedException {
+            return false;
+        }
+
+        @Override
+        public Boolean getDefaultValue() {
+            return true;
+        }
+    }.addAliases("-n");
+
+    /**
+     * Flag to specify a paste service.
+     */
+    public static final CommandFlag<PasteServiceType> PASTE_SERVICE_TYPE = new OptionalCommandFlag<PasteServiceType>
+            ("PasteServiceType", "--paste", PasteServiceType.class) {
+
+        private final List<String> pasteTypes = Arrays.stream(PasteServiceType.values())
+                .filter(pt -> pt != PasteServiceType.NONE)
+                .map(p -> p.toString().toLowerCase())
+                .collect(Collectors.toList());
+
+        @Override
+        public Collection<String> suggestValue() {
+            return pasteTypes;
+        }
+
+        @Override
+        public PasteServiceType getValue(@NotNull String input) throws FlagParseFailedException {
+            try {
+                return PasteServiceType.valueOf(input.toUpperCase());
+            }
+            catch (IllegalArgumentException e) {
+                throw new InvalidCommandArgument(String.format("Invalid paste service type '%s'.", input));
+            }
+        }
+
+        @Override
+        public PasteServiceType getValue() throws FlagParseFailedException {
+            return PasteServiceType.PASTEGG;
+        }
+
+        @Override
+        public PasteServiceType getDefaultValue() {
+            return PasteServiceType.NONE;
+        }
+    }.addAliases("-p");
+
+    /**
+     * Flag to toggle if plugin list should be included.
+     */
+    public static final CommandFlag<Boolean> INCLUDE_PLUGIN_LIST = new NoValueCommandFlag<Boolean>
+            ("IncludePlugins", "--include-plugin-list", Boolean.class) {
+        @Override
+        public Boolean getValue() throws FlagParseFailedException {
+            return true;
+        }
+
+        @Override
+        public Boolean getDefaultValue() {
+            return true;
+        }
+    }.addAliases("-pl");
+}
@@ -0,0 +1,59 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class FlagGroup {
+
+    public static FlagGroup of(CommandFlag<?>...flags) {
+        return new FlagGroup(flags);
+    }
+
+    private final List<String> flagIdentifiers;
+    private final Map<String, CommandFlag<?>> flagKeyMap;
+
+    private FlagGroup(CommandFlag<?>[] commandFlags) {
+        this.flagIdentifiers = new ArrayList<>(commandFlags.length);
+        this.flagKeyMap = new HashMap<>();
+        for (CommandFlag<?> flag : commandFlags) {
+            addFlag(flag);
+        }
+    }
+
+    private void addFlag(CommandFlag<?> flag) {
+        this.flagIdentifiers.add(flag.getIdentifier());
+        this.flagKeyMap.put(flag.getIdentifier(), flag);
+        for (String flagAlias : flag.getAliases()) {
+            this.flagKeyMap.put(flagAlias, flag);
+        }
+    }
+
+    @NotNull
+    public FlagResult calculateResult(String[] args) {
+        return FlagResult.parse(args,this);
+    }
+
+    @Nullable
+    public CommandFlag<?> getByKey(String key) {
+        return this.flagKeyMap.get(key);
+    }
+
+    @NotNull
+    public Collection<String> getFlagIdentifiers() {
+        return flagIdentifiers;
+    }
+
+    @Override
+    public String toString() {
+        return "FlagGroup{" +
+                "flagIdentifiers=" + flagIdentifiers +
+                ", keyFlagMap=" + flagKeyMap +
+                '}';
+    }
+}
@@ -0,0 +1,13 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+import co.aikar.commands.InvalidCommandArgument;
+
+public class FlagParseFailedException extends InvalidCommandArgument {
+
+    public FlagParseFailedException() {
+    }
+
+    public FlagParseFailedException(String message, Object...replacements) {
+        super(String.format(message, replacements), true);
+    }
+}
@@ -0,0 +1,146 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static com.onarandombox.MultiverseCore.commandtools.flag.CommandFlag.ValueRequirement;
+
+public class FlagResult {
+
+    public static FlagResult parse(@Nullable String[] args,
+                                   @NotNull FlagGroup flagGroup) throws FlagParseFailedException {
+
+        FlagResult flagResult = new FlagResult();
+
+        // No args to parse.
+        if (args == null || args.length <= 0) {
+            return flagResult;
+        }
+
+        // First arg must be a flag.
+        CommandFlag<?> currentFlag = flagGroup.getByKey(args[0]);
+        boolean completed = false;
+
+        // Parse the arguments.
+        for (int i = 1, argsLength = args.length; i <= argsLength; i++) {
+            // Don't allow null flag obviously.
+            if (currentFlag == null) {
+                throw new FlagParseFailedException("%s is not a valid flag.", args[i-1]);
+            }
+            // THis ensures that flag is not null during final parse.
+            if (i >= argsLength) {
+                break;
+            }
+
+            CommandFlag<?> nextFlag = flagGroup.getByKey(args[i]);
+
+            switch (currentFlag.getValueRequirement()) {
+                case NONE:
+                    // Arg must be a flag key.
+                    flagResult.add(currentFlag, currentFlag.getValue(), false);
+                    currentFlag = nextFlag;
+                    break;
+                case OPTIONAL:
+                    // Arg can be a flag key or value.
+                    if (nextFlag != null) {
+                        // It's a key.
+                        flagResult.add(currentFlag, currentFlag.getValue(), false);
+                        currentFlag = nextFlag;
+                        break;
+                    }
+                    // It's a value.
+                    flagResult.add(currentFlag, currentFlag.getValue(args[i]), true);
+                    if (i == argsLength - 1) {
+                        completed = true;
+                        break;
+                    }
+                    currentFlag = flagGroup.getByKey(args[++i]);
+                    break;
+                case REQUIRED:
+                    // Arg must be a flag value.
+                    if (nextFlag != null) {
+                        // It's a key.
+                        throw new FlagParseFailedException("%s flag '%s' requires a value input.",
+                                currentFlag.getName(), currentFlag.getIdentifier());
+                    }
+                    // It's a value.
+                    flagResult.add(currentFlag, currentFlag.getValue(args[i]), true);
+                    if (i == argsLength - 1) {
+                        completed = true;
+                        break;
+                    }
+                    currentFlag = flagGroup.getByKey(args[++i]);
+                    break;
+            }
+        }
+
+        // Parse final flag.
+        if (!completed) {
+            if (currentFlag.getValueRequirement() == ValueRequirement.REQUIRED) {
+                throw new FlagParseFailedException("%s flag '%s' requires a value input.",
+                        currentFlag.getName(), currentFlag.getIdentifier());
+            }
+            flagResult.add(currentFlag, currentFlag.getValue(), false);
+        }
+
+        return flagResult;
+    }
+
+    private final Map<CommandFlag<?>, SingleFlagResult<?>> resultMap;
+
+    public FlagResult() {
+        resultMap = new HashMap<>();
+    }
+
+    private void add(CommandFlag<?> flag, Object value, boolean fromInput) {
+        resultMap.put(flag, new SingleFlagResult<>(value, fromInput));
+    }
+
+    public <T> T getValue(CommandFlag<T> flag) {
+        SingleFlagResult<?> result = resultMap.get(flag);
+        if (result == null) {
+            return flag.getDefaultValue();
+        }
+        return (T) result.value;
+    }
+
+    public boolean isByUserInput(CommandFlag<?> flag) {
+        SingleFlagResult<?> result = resultMap.get(flag);
+        if (result == null) {
+            return false;
+        }
+        return result.fromInput;
+    }
+
+    public boolean isDefaulted(CommandFlag<?> flag) {
+        return resultMap.get(flag) != null;
+    }
+
+    @Override
+    public String toString() {
+        return "FlagResult{" +
+                "resultMap=" + resultMap +
+                '}';
+    }
+
+    private class SingleFlagResult<T> {
+        private final T value;
+        private final boolean fromInput;
+
+        private SingleFlagResult(T value, boolean fromInput) {
+            this.fromInput = fromInput;
+            this.value = value;
+        }
+
+        @Override
+        public String toString() {
+            return "SingleFlagResult{" +
+                    "value=" + value +
+                    ", fromInput=" + fromInput +
+                    '}';
+        }
+    }
+}
@@ -0,0 +1,37 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * Command Flag with {@link ValueRequirement#NONE}.
+ * This flag will always not require a user input to parse value.
+ *
+ * @param <T>   The flag Type.
+ */
+public abstract class NoValueCommandFlag<T> extends CommandFlag<T> {
+
+    public NoValueCommandFlag(String name, String identifier, Class<T> type) {
+        super(name, identifier, type, ValueRequirement.NONE);
+    }
+
+    /**
+     * {@link NoValueCommandFlag} will always not require a user input to parse value.
+     * Thus, no value suggestion needed.
+     */
+    @Override
+    public final Collection<String> suggestValue() {
+        return Collections.emptyList();
+    }
+
+    /**
+     * {@link NoValueCommandFlag} will always not require a user input to parse value.
+     * Thus, this operation is not allowed.
+     */
+    @Override
+    public final T getValue(@NotNull String input) throws FlagParseFailedException {
+        throw new FlagParseFailedException("%s flag '%s' does not require a value.", this.name, this.identifier);
+    }
+}
@@ -0,0 +1,13 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+/**
+ * Command Flag with {@link ValueRequirement#OPTIONAL}.
+ *
+ * @param <T>   The flag Type.
+ */
+public abstract class OptionalCommandFlag<T> extends CommandFlag<T> {
+
+    public OptionalCommandFlag(String name, String identifier, Class<T> type) {
+        super(name, identifier, type, ValueRequirement.OPTIONAL);
+    }
+}
@@ -0,0 +1,23 @@
+package com.onarandombox.MultiverseCore.commandtools.flag;
+
+/**
+ * Command Flag with {@link ValueRequirement#REQUIRED}.
+ * This flag will always require a user input to parse value.
+ *
+ * @param <T>   The flag Type.
+ */
+public abstract class RequiredCommandFlag<T> extends CommandFlag<T> {
+
+    public RequiredCommandFlag(String name, String identifier, Class<T> type) {
+        super(name, identifier, type, ValueRequirement.REQUIRED);
+    }
+
+    /**
+     * {@link RequiredCommandFlag} will always require a user input to parse value.
+     * Thus, this operation is not allowed.
+     */
+    @Override
+    public final T getValue() throws FlagParseFailedException {
+        throw new FlagParseFailedException("%s flag '%s' requires a value input.", this.name, this.identifier);
+    }
+}
@@ -0,0 +1,4 @@
+/**
+ * Main classes used to manage commands.
+ */
+package com.onarandombox.MultiverseCore.commandtools;
@@ -0,0 +1,107 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools.queue;
+
+import com.dumptruckman.minecraft.util.Logging;
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.scheduler.BukkitTask;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Map;
+import java.util.WeakHashMap;
+
+/**
+ * Queue dangerous commands, with the need to use '/mv confirm' before executing.
+ */
+public class CommandQueueManager {
+
+    private final MultiverseCore plugin;
+    private final Map<CommandSender, QueuedCommand> queuedCommandMap;
+
+    public CommandQueueManager(@NotNull MultiverseCore plugin) {
+        this.plugin = plugin;
+        this.queuedCommandMap = new WeakHashMap<>();
+    }
+
+    public void addToQueue(QueuedCommand queuedCommand) {
+        CommandSender sender = queuedCommand.getSender();
+        this.cancelPreviousInQueue(sender);
+        this.queuedCommandMap.put(sender, queuedCommand);
+
+        queuedCommand.setExpireTask(runExpireLater(queuedCommand));
+
+        sender.sendMessage(queuedCommand.getPrompt());
+        sender.sendMessage(String.format("Run %s/mv confirm %sto continue.", ChatColor.GREEN, ChatColor.WHITE));
+    }
+
+    /**
+     * Since only one command is stored in queue per sender, we remove the old one.
+     *
+     * @param sender {@link CommandSender} that executed the command.
+     */
+    private void cancelPreviousInQueue(@NotNull CommandSender sender) {
+        QueuedCommand previousCommand = queuedCommandMap.get(sender);
+        if (previousCommand == null) {
+            return;
+        }
+        previousCommand.getExpireTask().cancel();
+        this.queuedCommandMap.remove(sender);
+    }
+
+    /**
+     * Expire task that remove {@link QueuedCommand} from queue after expiry.
+     *
+     * @param queuedCommand  Command to run the expire task on.
+     * @return The expire {@link BukkitTask}.
+     */
+    @NotNull
+    private BukkitTask runExpireLater(@NotNull QueuedCommand queuedCommand) {
+        return Bukkit.getScheduler().runTaskLater(
+                this.plugin,
+                expireRunnable(queuedCommand),
+                queuedCommand.getValidDuration()
+        );
+    }
+
+    @NotNull
+    private Runnable expireRunnable(@NotNull QueuedCommand queuedCommand) {
+        return () -> {
+            QueuedCommand matchingQueuedCommand = this.queuedCommandMap.get(queuedCommand.getSender());
+            if (!queuedCommand.equals(matchingQueuedCommand)) {
+                Logging.finer("This is an old command already.");
+                return;
+            }
+            Logging.finer("Command has expired, removing...");
+            this.queuedCommandMap.remove(queuedCommand.getSender());
+        };
+    }
+
+    /**
+     * Runs the command in queue for the given sender, if any.
+     *
+     * @param sender {@link CommandSender} that confirmed the command.
+     * @return True of queued command ran successfully, false otherwise.
+     */
+    public boolean runQueuedCommand(@NotNull CommandSender sender) {
+        CommandSender targetSender = QueuedCommand.parseSender(sender);
+        QueuedCommand queuedCommand = this.queuedCommandMap.get(targetSender);
+        if (queuedCommand == null) {
+            sender.sendMessage("You do not have any commands in queue.");
+            return false;
+        }
+
+        Logging.finer("Running queued command...");
+        queuedCommand.getAction().run();
+        queuedCommand.getExpireTask().cancel();
+        this.queuedCommandMap.remove(targetSender);
+        return true;
+    }
+}
@@ -0,0 +1,104 @@
+package com.onarandombox.MultiverseCore.commandtools.queue;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Server;
+import org.bukkit.command.CommandSender;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionAttachment;
+import org.bukkit.permissions.PermissionAttachmentInfo;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Set;
+
+/**
+ * Used by {@link CommandQueueManager}, so different commands block can be recognised as one.
+ */
+class DummyCommandBlockSender implements CommandSender {
+
+    @Override
+    public void sendMessage(@NotNull String message) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void sendMessage(@NotNull String[] messages) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public @NotNull Server getServer() {
+        return Bukkit.getServer();
+    }
+
+    @Override
+    public @NotNull String getName() {
+        return "DummyCommandBlockSender";
+    }
+
+    @Override
+    public boolean isPermissionSet(@NotNull String name) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean isPermissionSet(@NotNull Permission perm) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean hasPermission(@NotNull String name) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean hasPermission(@NotNull Permission perm) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public @NotNull PermissionAttachment addAttachment(@NotNull Plugin plugin, @NotNull String name, boolean value) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public @NotNull PermissionAttachment addAttachment(@NotNull Plugin plugin) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public @Nullable PermissionAttachment addAttachment(@NotNull Plugin plugin, @NotNull String name, boolean value, int ticks) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public @Nullable PermissionAttachment addAttachment(@NotNull Plugin plugin, int ticks) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void removeAttachment(@NotNull PermissionAttachment attachment) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void recalculatePermissions() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public @NotNull Set<PermissionAttachmentInfo> getEffectivePermissions() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean isOp() {
+        return true;
+    }
+
+    @Override
+    public void setOp(boolean value) {
+        throw new UnsupportedOperationException();
+    }
+}
@@ -0,0 +1,122 @@
+/******************************************************************************
+ * Multiverse 2 Copyright (c) the Multiverse Team 2020.                       *
+ * Multiverse 2 is licensed under the BSD License.                            *
+ * For more information please check the README.md file included              *
+ * with this project.                                                         *
+ ******************************************************************************/
+
+package com.onarandombox.MultiverseCore.commandtools.queue;
+
+import com.dumptruckman.minecraft.util.Logging;
+import org.bukkit.block.data.type.CommandBlock;
+import org.bukkit.command.BlockCommandSender;
+import org.bukkit.command.CommandSender;
+import org.bukkit.scheduler.BukkitTask;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Represents a single command in {@link CommandQueueManager}.
+ */
+public class QueuedCommand {
+
+    private static final DummyCommandBlockSender COMMAND_BLOCK = new DummyCommandBlockSender();
+    private static final String DEFAULT_PROMPT_MESSAGE = "The command you are trying to run is deemed dangerous.";
+    private static final int DEFAULT_VALID_TIME = 200;  // In ticks, 20 ticks = 1s
+
+    /**
+     * To allow all CommandBlocks to be a common sender with use of {@link DummyCommandBlockSender}.
+     * So confirm command can be used for a queue command on another command block.
+     */
+    @NotNull
+    static CommandSender parseSender(@NotNull CommandSender sender) {
+        Logging.fine(sender.getClass().getName());
+        if (isCommandBlock(sender)) {
+            Logging.finer("Is command block.");
+            return COMMAND_BLOCK;
+        }
+        return sender;
+    }
+
+    /**
+     * Check if sender is a command block.
+     */
+    static boolean isCommandBlock(@NotNull CommandSender sender) {
+        return sender instanceof BlockCommandSender
+                && ((BlockCommandSender) sender).getBlock().getBlockData() instanceof CommandBlock;
+    }
+
+    private CommandSender sender;
+    private String prompt = DEFAULT_PROMPT_MESSAGE;
+    private int validDuration = DEFAULT_VALID_TIME;
+    private Runnable action;
+    private BukkitTask expireTask;
+
+    private QueuedCommand() { }
+
+    @NotNull
+    public CommandSender getSender() {
+        return sender;
+    }
+
+    @NotNull
+    public String getPrompt() {
+        return prompt;
+    }
+
+    public int getValidDuration() {
+        return validDuration;
+    }
+
+    @NotNull
+    public Runnable getAction() {
+        return action;
+    }
+
+    @NotNull
+    public BukkitTask getExpireTask() {
+        return expireTask;
+    }
+
+    public void setExpireTask(@NotNull BukkitTask expireTask) {
+        this.expireTask = expireTask;
+    }
+
+    public static class Builder {
+
+        private final QueuedCommand command;
+
+        @NotNull
+        public Builder() {
+            this.command = new QueuedCommand();
+        }
+
+        @NotNull
+        public Builder sender(@NotNull CommandSender sender) {
+            this.command.sender = sender;
+            return this;
+        }
+
+        @NotNull
+        public Builder action(@NotNull Runnable action) {
+            this.command.action = action;
+            return this;
+        }
+
+        @NotNull
+        public Builder prompt(@NotNull String prompt, Object...replacements) {
+            this.command.prompt = String.format(prompt, replacements);
+            return this;
+        }
+
+        @NotNull
+        public Builder validDuration(int validDuration) {
+            this.command.validDuration = validDuration;
+            return this;
+        }
+
+        @NotNull
+        public QueuedCommand build() {
+            return this.command;
+        }
+    }
+}
@@ -0,0 +1,4 @@
+/**
+ * Manager queuing of dangerous commands in need of confirmation.
+ */
+package com.onarandombox.MultiverseCore.commandtools.queue;
@@ -1,115 +0,0 @@
-/******************************************************************************
- * Multiverse 2 Copyright (c) the Multiverse Team 2012.                       *
- * Multiverse 2 is licensed under the BSD License.                            *
- * For more information please check the README.md file included              *
- * with this project.                                                         *
- ******************************************************************************/
-
-package com.onarandombox.MultiverseCore.configuration;
-
-/**
- * A {@link String} config-property that will NOT be saved to the config.
- */
-public class ActiveStringConfigProperty implements MVActiveConfigProperty<String> {
-    private String name;
-    private String value;
-    private String method;
-    private String help;
-
-    public ActiveStringConfigProperty(String name, String defaultValue, String help) {
-        this.name = name;
-        this.help = help;
-        this.value = defaultValue;
-        this.parseValue(defaultValue);
-    }
-
-    public ActiveStringConfigProperty(String name, String defaultValue, String help, String method) {
-        this(name, defaultValue, help);
-        this.method = method;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getName() {
-        return this.name;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getValue() {
-        return this.value;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getMethod() {
-        return this.method;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public void setMethod(String methodName) {
-        this.method = methodName;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public Class<?> getPropertyClass() {
-        return String.class;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean parseValue(String value) {
-        if (value == null) {
-            return false;
-        }
-        this.setValue(value);
-        return true;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getConfigNode() {
-        return "";
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public String getHelp() {
-        return this.help;
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    public boolean setValue(String value) {
-        if (value == null) {
-            return false;
-        }
-        this.value = value;
-        return true;
-    }
-
-    @Override
-    public String toString() {
-        return value;
-    }
-}