1.6.2 release

* Issues with WrappedPacketInEntityAction on 1.7.10

.github/workflows/maven.yml

@@ -0,0 +1,30 @@
+name: Generate and deploy JavaDocs
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Build with Maven
+      run: mvn install
+    - name: List target/apidocs
+      run: ls target/apidocs
+    - name: GitHub Pages
+      uses: crazy-max/ghaction-github-pages@v2.1.2
+      env:
+        GH_PAT: ${{ secrets.GH_PAT }}
+      with:
+        target_branch: javadocs
+        keep_history: true
+        build_dir: target/apidocs
+        commit_message: Update JavaDocs

.gitignore

@@ -0,0 +1,113 @@
+#
+# JetBrains
+#
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+
+#
+# Java
+#
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+#
+# Maven
+#
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+# https://github.com/takari/maven-wrapper#usage-without-binary-jar
+.mvn/wrapper/maven-wrapper.jar

.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml

.idea/compiler.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="packetevents" />
+      </profile>
+    </annotationProcessing>
+    <bytecodeTargetLevel>
+      <module name="packetevents" target="8" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

.idea/encodings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+  </component>
+</project>

.idea/jarRepositories.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="viaversion-repo" />
+      <option name="name" value="viaversion-repo" />
+      <option name="url" value="https://repo.viaversion.com" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://repo.maven.apache.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jitpack.io" />
+      <option name="name" value="jitpack.io" />
+      <option name="url" value="https://jitpack.io" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="spigot-repo" />
+      <option name="name" value="spigot-repo" />
+      <option name="url" value="https://hub.spigotmc.org/nexus/content/repositories/snapshots/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="funkemunky-releases" />
+      <option name="name" value="funkemunky-releases" />
+      <option name="url" value="https://nexus.funkemunky.cc/content/repositories/releases/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="dmulloy2-repo" />
+      <option name="name" value="dmulloy2-repo" />
+      <option name="url" value="https://repo.dmulloy2.net/nexus/repository/public/" />
+    </remote-repository>
+  </component>
+</project>

.idea/misc.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="EntryPointsManager">
+    <list size="1">
+      <item index="0" class="java.lang.String" itemvalue="org.bukkit.event.EventHandler" />
+    </list>
+  </component>
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_13" project-jdk-name="13" project-jdk-type="JavaSDK" />
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/packetevents.iml" filepath="$PROJECT_DIR$/packetevents.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

LICENSE

@@ -1,339 +1,21 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+MIT License
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+Copyright (c) 2020 retrooper
 
-                            Preamble
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
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-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
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+SOFTWARE.

README.md

@@ -1,27 +1,20 @@
-# PacketEvents
-API for listenening to minecraft packets
+# packetevents by retrooper
 
-Credit to TinyProtocol
+A lightweight spigot packetlistener & packetsender coded by retrooper.
 
-PacketEvents coded by purplex
-Discord server: https://discord.gg/ZWTkg4v
+## About
 
+This packetlistener is **only** supported on spigot servers and has been tested to work on these spigot forks: PaperSpigot, Tuinity
 
-# Maven
+* No dependencies
 
+* Licensed under the MIT license
 
-<repositories>
-        <repository>
-            <id>jitpack.io</id>
-            <url>https://jitpack.io</url>
-        </repository>
-    </repositories>
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
+Our discord server: https://discord.me/packetevents
+
+[![](https://jitpack.io/v/retrooper/packetevents.svg)](https://jitpack.io/#retrooper/packetevents)
+
+[![](https://jitci.com/gh/retrooper/packetevents/svg)](https://jitci.com/gh/retrooper/packetevents)
 
-<dependencies>
-        <dependency>
-            <groupId>com.github.purpdev</groupId>
-            <artifactId>PacketEvents</artifactId>
-            <version>1.0.5</version>
-            <scope>compile</scope>
-        </dependency>
-</dependencies>

packetevents.iml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="minecraft" name="Minecraft">
+      <configuration>
+        <autoDetectTypes>
+          <platformType>SPIGOT</platformType>
+        </autoDetectTypes>
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea/libraries" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.github.spigot:1.8.8:1.8.8" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.github.spigot:1.7.10:1.7.10" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: com.comphenix.protocol:ProtocolLib:4.5.0" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: cglib:cglib-nodep:3.2.5" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: com.comphenix.executors:BukkitExecutors:1.1-SNAPSHOT" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-common:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-bukkit:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-bukkit-legacy:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-bungee:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-fabric:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-sponge:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-sponge-legacy:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: us.myles:viaversion-velocity:3.0.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: net.md-5:bungeecord-chat:1.15-SNAPSHOT" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: com.github.ProtocolSupport:ProtocolSupport:4fdd683" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.apache.commons:commons-lang3:3.8.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: it.unimi.dsi:fastutil:8.2.2" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: com.google.code.gson:gson:2.8.5" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.spigotmc:spigot-api:1.8.8-R0.1-SNAPSHOT" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: commons-lang:commons-lang:2.6" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: com.googlecode.json-simple:json-simple:1.1.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: junit:junit:4.10" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.hamcrest:hamcrest-core:1.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: com.google.guava:guava:17.0" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.avaje:ebean:2.8.1" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: javax.persistence:persistence-api:1.0" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.yaml:snakeyaml:1.15" level="project" />
+    <orderEntry type="library" scope="PROVIDED" name="Maven: org.bukkit:bukkit:1.8.8-R0.1-SNAPSHOT" level="project" />
+  </component>
+</module>

pom.xml

@@ -4,83 +4,122 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>me.retrooper</groupId>
+    <groupId>io.github.retrooper</groupId>
     <artifactId>packetevents</artifactId>
-    <version>1.0.6</version>
-    <packaging>jar</packaging>
+    <version>1.6.2</version>
 
-    <name>PacketEvents</name>
+    <!-- You can build the project with this: "mvn clean compile assembly:single" -->
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <configuration>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+    <packaging>jar</packaging>
+    <name>packetevents</name>
 
     <properties>
         <java.version>1.8</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
-    <build>
-        <defaultGoal>clean package</defaultGoal>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.7.0</version>
-                <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>3.1.0</version>
-                <executions>
-                    <execution>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                        <configuration>
-                            <createDependencyReducedPom>false</createDependencyReducedPom>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-        <resources>
-            <resource>
-                <directory>src/main/resources</directory>
-                <filtering>true</filtering>
-            </resource>
-        </resources>
-    </build>
-
     <repositories>
         <repository>
             <id>spigot-repo</id>
-            <url>https://hub.spigotmc.org/nexus/content/groups/public/</url>
+            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
         </repository>
         <repository>
-            <id>libraries-mojang</id>
-            <url>https://libraries.minecraft.net/</url>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+        <repository>
+            <id>funkemunky-releases</id>
+            <url>https://nexus.funkemunky.cc/content/repositories/releases/</url>
+        </repository>
+        <repository>
+            <id>viaversion-repo</id>
+            <url>https://repo.viaversion.com</url>
+        </repository>
+        <repository>
+            <id>dmulloy2-repo</id>
+            <url>https://repo.dmulloy2.net/nexus/repository/public/</url>
         </repository>
     </repositories>
 
+
     <dependencies>
         <dependency>
-            <groupId>com.mojang</groupId>
-            <artifactId>authlib</artifactId>
-            <version>1.5.21</version>
-            <scope>compile</scope>
+            <groupId>org.github.spigot</groupId>
+            <artifactId>1.8.8</artifactId>
+            <version>1.8.8</version>
+            <scope>provided</scope>
         </dependency>
+
         <dependency>
-            <groupId>io.netty</groupId>
-            <artifactId>netty-all</artifactId>
-            <version>4.1.42.Final</version>
-            <scope>compile</scope>
+            <groupId>org.github.spigot</groupId>
+            <artifactId>1.7.10</artifactId>
+            <version>1.7.10</version>
+            <scope>provided</scope>
         </dependency>
+
+        <dependency>
+            <groupId>com.comphenix.protocol</groupId>
+            <artifactId>ProtocolLib</artifactId>
+            <version>4.5.0</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>us.myles</groupId>
+            <artifactId>viaversion</artifactId>
+            <version>3.0.1</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.github.ProtocolSupport</groupId>
+            <artifactId>ProtocolSupport</artifactId>
+            <version>4fdd683</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
+            <version>1.8.8-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.bukkit</groupId>
             <artifactId>bukkit</artifactId>
-            <version>1.8-R0.1-SNAPSHOT</version>
+            <version>1.8.8-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>

src/main/java/com/comphenix/tinyprotocol/Reflection.java

@@ -1,403 +0,0 @@
-package com.comphenix.tinyprotocol;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.Arrays;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import org.bukkit.Bukkit;
-
-/**
- * An utility class that simplifies reflection in Bukkit plugins.
- * 
- * @author Kristian
- */
-public final class Reflection {
-	/**
-	 * An interface for invoking a specific constructor.
-	 */
-	public interface ConstructorInvoker {
-		/**
-		 * Invoke a constructor for a specific class.
-		 * 
-		 * @param arguments - the arguments to pass to the constructor.
-		 * @return The constructed object.
-		 */
-		public Object invoke(Object... arguments);
-	}
-
-	/**
-	 * An interface for invoking a specific method.
-	 */
-	public interface MethodInvoker {
-		/**
-		 * Invoke a method on a specific target object.
-		 * 
-		 * @param target - the target object, or NULL for a static method.
-		 * @param arguments - the arguments to pass to the method.
-		 * @return The return value, or NULL if is void.
-		 */
-		public Object invoke(Object target, Object... arguments);
-	}
-
-	/**
-	 * An interface for retrieving the field content.
-	 * 
-	 * @param <T> - field type.
-	 */
-	public interface FieldAccessor<T> {
-		/**
-		 * Retrieve the content of a field.
-		 * 
-		 * @param target - the target object, or NULL for a static field.
-		 * @return The value of the field.
-		 */
-		public T get(Object target);
-
-		/**
-		 * Set the content of a field.
-		 * 
-		 * @param target - the target object, or NULL for a static field.
-		 * @param value - the new value of the field.
-		 */
-		public void set(Object target, Object value);
-
-		/**
-		 * Determine if the given object has this field.
-		 * 
-		 * @param target - the object to test.
-		 * @return TRUE if it does, FALSE otherwise.
-		 */
-		public boolean hasField(Object target);
-	}
-
-	// Deduce the net.minecraft.server.v* package
-	private static String OBC_PREFIX = Bukkit.getServer().getClass().getPackage().getName();
-	private static String NMS_PREFIX = OBC_PREFIX.replace("org.bukkit.craftbukkit", "net.minecraft.server");
-	private static String VERSION = OBC_PREFIX.replace("org.bukkit.craftbukkit", "").replace(".", "");
-
-	// Variable replacement
-	private static Pattern MATCH_VARIABLE = Pattern.compile("\\{([^\\}]+)\\}");
-
-	private Reflection() {
-		// Seal class
-	}
-
-	/**
-	 * Retrieve a field accessor for a specific field type and name.
-	 * 
-	 * @param target - the target type.
-	 * @param name - the name of the field, or NULL to ignore.
-	 * @param fieldType - a compatible field type.
-	 * @return The field accessor.
-	 */
-	public static <T> FieldAccessor<T> getField(Class<?> target, String name, Class<T> fieldType) {
-		return getField(target, name, fieldType, 0);
-	}
-
-	/**
-	 * Retrieve a field accessor for a specific field type and name.
-	 * 
-	 * @param className - lookup name of the class, see {@link #getClass(String)}.
-	 * @param name - the name of the field, or NULL to ignore.
-	 * @param fieldType - a compatible field type.
-	 * @return The field accessor.
-	 */
-	public static <T> FieldAccessor<T> getField(String className, String name, Class<T> fieldType) {
-		return getField(getClass(className), name, fieldType, 0);
-	}
-
-	/**
-	 * Retrieve a field accessor for a specific field type and name.
-	 * 
-	 * @param target - the target type.
-	 * @param fieldType - a compatible field type.
-	 * @param index - the number of compatible fields to skip.
-	 * @return The field accessor.
-	 */
-	public static <T> FieldAccessor<T> getField(Class<?> target, Class<T> fieldType, int index) {
-		return getField(target, null, fieldType, index);
-	}
-
-	/**
-	 * Retrieve a field accessor for a specific field type and name.
-	 * 
-	 * @param className - lookup name of the class, see {@link #getClass(String)}.
-	 * @param fieldType - a compatible field type.
-	 * @param index - the number of compatible fields to skip.
-	 * @return The field accessor.
-	 */
-	public static <T> FieldAccessor<T> getField(String className, Class<T> fieldType, int index) {
-		return getField(getClass(className), fieldType, index);
-	}
-
-	// Common method
-	private static <T> FieldAccessor<T> getField(Class<?> target, String name, Class<T> fieldType, int index) {
-		for (final Field field : target.getDeclaredFields()) {
-			if ((name == null || field.getName().equals(name)) && fieldType.isAssignableFrom(field.getType()) && index-- <= 0) {
-				field.setAccessible(true);
-
-				// A function for retrieving a specific field value
-				return new FieldAccessor<T>() {
-
-					@Override
-					@SuppressWarnings("unchecked")
-					public T get(Object target) {
-						try {
-							return (T) field.get(target);
-						} catch (IllegalAccessException e) {
-							throw new RuntimeException("Cannot access reflection.", e);
-						}
-					}
-
-					@Override
-					public void set(Object target, Object value) {
-						try {
-							field.set(target, value);
-						} catch (IllegalAccessException e) {
-							throw new RuntimeException("Cannot access reflection.", e);
-						}
-					}
-
-					@Override
-					public boolean hasField(Object target) {
-						// target instanceof DeclaringClass
-						return field.getDeclaringClass().isAssignableFrom(target.getClass());
-					}
-				};
-			}
-		}
-
-		// Search in parent classes
-		if (target.getSuperclass() != null)
-			return getField(target.getSuperclass(), name, fieldType, index);
-
-		throw new IllegalArgumentException("Cannot find field with type " + fieldType);
-	}
-
-	/**
-	 * Search for the first publicly and privately defined method of the given name and parameter count.
-	 * 
-	 * @param className - lookup name of the class, see {@link #getClass(String)}.
-	 * @param methodName - the method name, or NULL to skip.
-	 * @param params - the expected parameters.
-	 * @return An object that invokes this specific method.
-	 * @throws IllegalStateException If we cannot find this method.
-	 */
-	public static MethodInvoker getMethod(String className, String methodName, Class<?>... params) {
-		return getTypedMethod(getClass(className), methodName, null, params);
-	}
-
-	/**
-	 * Search for the first publicly and privately defined method of the given name and parameter count.
-	 * 
-	 * @param clazz - a class to start with.
-	 * @param methodName - the method name, or NULL to skip.
-	 * @param params - the expected parameters.
-	 * @return An object that invokes this specific method.
-	 * @throws IllegalStateException If we cannot find this method.
-	 */
-	public static MethodInvoker getMethod(Class<?> clazz, String methodName, Class<?>... params) {
-		return getTypedMethod(clazz, methodName, null, params);
-	}
-
-	/**
-	 * Search for the first publicly and privately defined method of the given name and parameter count.
-	 * 
-	 * @param clazz - a class to start with.
-	 * @param methodName - the method name, or NULL to skip.
-	 * @param returnType - the expected return type, or NULL to ignore.
-	 * @param params - the expected parameters.
-	 * @return An object that invokes this specific method.
-	 * @throws IllegalStateException If we cannot find this method.
-	 */
-	public static MethodInvoker getTypedMethod(Class<?> clazz, String methodName, Class<?> returnType, Class<?>... params) {
-		for (final Method method : clazz.getDeclaredMethods()) {
-			if ((methodName == null || method.getName().equals(methodName))
-					&& (returnType == null || method.getReturnType().equals(returnType))
-					&& Arrays.equals(method.getParameterTypes(), params)) {
-				method.setAccessible(true);
-
-				return new MethodInvoker() {
-
-					@Override
-					public Object invoke(Object target, Object... arguments) {
-						try {
-							return method.invoke(target, arguments);
-						} catch (Exception e) {
-							throw new RuntimeException("Cannot invoke method " + method, e);
-						}
-					}
-
-				};
-			}
-		}
-
-		// Search in every superclass
-		if (clazz.getSuperclass() != null)
-			return getMethod(clazz.getSuperclass(), methodName, params);
-
-		throw new IllegalStateException(String.format("Unable to find method %s (%s).", methodName, Arrays.asList(params)));
-	}
-
-	/**
-	 * Search for the first publically and privately defined constructor of the given name and parameter count.
-	 * 
-	 * @param className - lookup name of the class, see {@link #getClass(String)}.
-	 * @param params - the expected parameters.
-	 * @return An object that invokes this constructor.
-	 * @throws IllegalStateException If we cannot find this method.
-	 */
-	public static ConstructorInvoker getConstructor(String className, Class<?>... params) {
-		return getConstructor(getClass(className), params);
-	}
-
-	/**
-	 * Search for the first publically and privately defined constructor of the given name and parameter count.
-	 * 
-	 * @param clazz - a class to start with.
-	 * @param params - the expected parameters.
-	 * @return An object that invokes this constructor.
-	 * @throws IllegalStateException If we cannot find this method.
-	 */
-	public static ConstructorInvoker getConstructor(Class<?> clazz, Class<?>... params) {
-		for (final Constructor<?> constructor : clazz.getDeclaredConstructors()) {
-			if (Arrays.equals(constructor.getParameterTypes(), params)) {
-				constructor.setAccessible(true);
-
-				return new ConstructorInvoker() {
-
-					@Override
-					public Object invoke(Object... arguments) {
-						try {
-							return constructor.newInstance(arguments);
-						} catch (Exception e) {
-							throw new RuntimeException("Cannot invoke constructor " + constructor, e);
-						}
-					}
-
-				};
-			}
-		}
-
-		throw new IllegalStateException(String.format("Unable to find constructor for %s (%s).", clazz, Arrays.asList(params)));
-	}
-
-	/**
-	 * Retrieve a class from its full name, without knowing its type on compile time.
-	 * <p>
-	 * This is useful when looking up fields by a NMS or OBC type.
-	 * <p>
-	 * 
-	 * @see {@link #getClass()} for more information.
-	 * @param lookupName - the class name with variables.
-	 * @return The class.
-	 */
-	public static Class<Object> getUntypedClass(String lookupName) {
-		@SuppressWarnings({ "rawtypes", "unchecked" })
-		Class<Object> clazz = (Class) getClass(lookupName);
-		return clazz;
-	}
-
-	/**
-	 * Retrieve a class from its full name.
-	 * <p>
-	 * Strings enclosed with curly brackets - such as {TEXT} - will be replaced according to the following table:
-	 * <p>
-	 * <table border="1">
-	 * <tr>
-	 * <th>Variable</th>
-	 * <th>Content</th>
-	 * </tr>
-	 * <tr>
-	 * <td>{nms}</td>
-	 * <td>Actual package name of net.minecraft.server.VERSION</td>
-	 * </tr>
-	 * <tr>
-	 * <td>{obc}</td>
-	 * <td>Actual pacakge name of org.bukkit.craftbukkit.VERSION</td>
-	 * </tr>
-	 * <tr>
-	 * <td>{version}</td>
-	 * <td>The current Minecraft package VERSION, if any.</td>
-	 * </tr>
-	 * </table>
-	 * 
-	 * @param lookupName - the class name with variables.
-	 * @return The looked up class.
-	 * @throws IllegalArgumentException If a variable or class could not be found.
-	 */
-	public static Class<?> getClass(String lookupName) {
-		return getCanonicalClass(expandVariables(lookupName));
-	}
-
-	/**
-	 * Retrieve a class in the net.minecraft.server.VERSION.* package.
-	 * 
-	 * @param name - the name of the class, excluding the package.
-	 * @throws IllegalArgumentException If the class doesn't exist.
-	 */
-	public static Class<?> getMinecraftClass(String name) {
-		return getCanonicalClass(NMS_PREFIX + "." + name);
-	}
-
-	/**
-	 * Retrieve a class in the org.bukkit.craftbukkit.VERSION.* package.
-	 * 
-	 * @param name - the name of the class, excluding the package.
-	 * @throws IllegalArgumentException If the class doesn't exist.
-	 */
-	public static Class<?> getCraftBukkitClass(String name) {
-		return getCanonicalClass(OBC_PREFIX + "." + name);
-	}
-
-	/**
-	 * Retrieve a class by its canonical name.
-	 * 
-	 * @param canonicalName - the canonical name.
-	 * @return The class.
-	 */
-	private static Class<?> getCanonicalClass(String canonicalName) {
-		try {
-			return Class.forName(canonicalName);
-		} catch (ClassNotFoundException e) {
-			throw new IllegalArgumentException("Cannot find " + canonicalName, e);
-		}
-	}
-
-	/**
-	 * Expand variables such as "{nms}" and "{obc}" to their corresponding packages.
-	 * 
-	 * @param name - the full name of the class.
-	 * @return The expanded string.
-	 */
-	private static String expandVariables(String name) {
-		StringBuffer output = new StringBuffer();
-		Matcher matcher = MATCH_VARIABLE.matcher(name);
-
-		while (matcher.find()) {
-			String variable = matcher.group(1);
-			String replacement = "";
-
-			// Expand all detected variables
-			if ("nms".equalsIgnoreCase(variable))
-				replacement = NMS_PREFIX;
-			else if ("obc".equalsIgnoreCase(variable))
-				replacement = OBC_PREFIX;
-			else if ("version".equalsIgnoreCase(variable))
-				replacement = VERSION;
-			else
-				throw new IllegalArgumentException("Unknown variable: " + variable);
-
-			// Assume the expanded variables are all packages, and append a dot
-			if (replacement.length() > 0 && matcher.end() < name.length() && name.charAt(matcher.end()) != '.')
-				replacement += ".";
-			matcher.appendReplacement(output, Matcher.quoteReplacement(replacement));
-		}
-
-		matcher.appendTail(output);
-		return output.toString();
-	}
-}

src/main/java/com/comphenix/tinyprotocol/TinyProtocol.java

@@ -1,522 +0,0 @@
-package com.comphenix.tinyprotocol;
-
-import io.netty.channel.Channel;
-import io.netty.channel.ChannelDuplexHandler;
-import io.netty.channel.ChannelFuture;
-import io.netty.channel.ChannelHandlerContext;
-import io.netty.channel.ChannelInboundHandlerAdapter;
-import io.netty.channel.ChannelInitializer;
-import io.netty.channel.ChannelPipeline;
-import io.netty.channel.ChannelPromise;
-
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import java.util.NoSuchElementException;
-import java.util.Set;
-import java.util.concurrent.atomic.AtomicInteger;
-import java.util.logging.Level;
-
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.HandlerList;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerLoginEvent;
-import org.bukkit.event.server.PluginDisableEvent;
-import org.bukkit.plugin.Plugin;
-import org.bukkit.scheduler.BukkitRunnable;
-
-import com.comphenix.tinyprotocol.Reflection.FieldAccessor;
-import com.comphenix.tinyprotocol.Reflection.MethodInvoker;
-import com.google.common.collect.Lists;
-import com.google.common.collect.MapMaker;
-import com.mojang.authlib.GameProfile;
-
-/**
- * Represents a very tiny alternative to ProtocolLib.
- * <p>
- * It now supports intercepting packets during login and status ping (such as OUT_SERVER_PING)!
- * 
- * @author Kristian
- */
-public abstract class TinyProtocol {
-	private static final AtomicInteger ID = new AtomicInteger(0);
-
-	// Used in order to lookup a channel
-	private static final MethodInvoker getPlayerHandle = Reflection.getMethod("{obc}.entity.CraftPlayer", "getHandle");
-	private static final FieldAccessor<Object> getConnection = Reflection.getField("{nms}.EntityPlayer", "playerConnection", Object.class);
-	private static final FieldAccessor<Object> getManager = Reflection.getField("{nms}.PlayerConnection", "networkManager", Object.class);
-	private static final FieldAccessor<Channel> getChannel = Reflection.getField("{nms}.NetworkManager", Channel.class, 0);
-
-	// Looking up ServerConnection
-	private static final Class<Object> minecraftServerClass = Reflection.getUntypedClass("{nms}.MinecraftServer");
-	private static final Class<Object> serverConnectionClass = Reflection.getUntypedClass("{nms}.ServerConnection");
-	private static final FieldAccessor<Object> getMinecraftServer = Reflection.getField("{obc}.CraftServer", minecraftServerClass, 0);
-	private static final FieldAccessor<Object> getServerConnection = Reflection.getField(minecraftServerClass, serverConnectionClass, 0);
-	private static final MethodInvoker getNetworkMarkers = Reflection.getTypedMethod(serverConnectionClass, null, List.class, serverConnectionClass);
-
-	// Packets we have to intercept
-	private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getMinecraftClass("PacketLoginInStart");
-	private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
-
-	// Speedup channel lookup
-	private Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
-	private Listener listener;
-
-	// Channels that have already been removed
-	private Set<Channel> uninjectedChannels = Collections.newSetFromMap(new MapMaker().weakKeys().<Channel, Boolean>makeMap());
-
-	// List of network markers
-	private List<Object> networkManagers;
-
-	// Injected channel handlers
-	private List<Channel> serverChannels = Lists.newArrayList();
-	private ChannelInboundHandlerAdapter serverChannelHandler;
-	private ChannelInitializer<Channel> beginInitProtocol;
-	private ChannelInitializer<Channel> endInitProtocol;
-
-	// Current handler name
-	private String handlerName;
-
-	protected volatile boolean closed;
-	protected Plugin plugin;
-
-	/**
-	 * Construct a new instance of TinyProtocol, and start intercepting packets for all connected clients and future clients.
-	 * <p>
-	 * You can construct multiple instances per plugin.
-	 * 
-	 * @param plugin - the plugin.
-	 */
-	public TinyProtocol(final Plugin plugin) {
-		this.plugin = plugin;
-
-		// Compute handler name
-		this.handlerName = getHandlerName();
-
-		// Prepare existing players
-		registerBukkitEvents();
-
-		try {
-			registerChannelHandler();
-			registerPlayers(plugin);
-		} catch (IllegalArgumentException ex) {
-			// Damn you, late bind
-			plugin.getLogger().info("[TinyProtocol] Delaying server channel injection due to late bind.");
-
-			new BukkitRunnable() {
-				@Override
-				public void run() {
-					registerChannelHandler();
-					registerPlayers(plugin);
-					plugin.getLogger().info("[TinyProtocol] Late bind injection successful.");
-				}
-			}.runTask(plugin);
-		}
-	}
-
-	private void createServerChannelHandler() {
-		// Handle connected channels
-		endInitProtocol = new ChannelInitializer<Channel>() {
-
-			@Override
-			protected void initChannel(Channel channel) throws Exception {
-				try {
-					// This can take a while, so we need to stop the main thread from interfering
-					synchronized (networkManagers) {
-						// Stop injecting channels
-						if (!closed) {
-							channel.eventLoop().submit(() -> injectChannelInternal(channel));
-						}
-					}
-				} catch (Exception e) {
-					plugin.getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
-				}
-			}
-
-		};
-
-		// This is executed before Minecraft's channel handler
-		beginInitProtocol = new ChannelInitializer<Channel>() {
-
-			@Override
-			protected void initChannel(Channel channel) throws Exception {
-				channel.pipeline().addLast(endInitProtocol);
-			}
-
-		};
-
-		serverChannelHandler = new ChannelInboundHandlerAdapter() {
-	
-			@Override
-			public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-				Channel channel = (Channel) msg;
-
-				// Prepare to initialize ths channel
-				channel.pipeline().addFirst(beginInitProtocol);
-				ctx.fireChannelRead(msg);
-			}
-
-		};
-	}
-
-	/**
-	 * Register bukkit events.
-	 */
-	private void registerBukkitEvents() {
-		listener = new Listener() {
-
-			@EventHandler(priority = EventPriority.LOWEST)
-			public final void onPlayerLogin(PlayerLoginEvent e) {
-				if (closed)
-					return;
-
-				Channel channel = getChannel(e.getPlayer());
-
-				// Don't inject players that have been explicitly uninjected
-				if (!uninjectedChannels.contains(channel)) {
-					injectPlayer(e.getPlayer());
-				}
-			}
-
-			@EventHandler
-			public final void onPluginDisable(PluginDisableEvent e) {
-				if (e.getPlugin().equals(plugin)) {
-					close();
-				}
-			}
-
-		};
-
-		plugin.getServer().getPluginManager().registerEvents(listener, plugin);
-	}
-
-	@SuppressWarnings("unchecked")
-	private void registerChannelHandler() {
-		Object mcServer = getMinecraftServer.get(Bukkit.getServer());
-		Object serverConnection = getServerConnection.get(mcServer);
-		boolean looking = true;
-
-		// We need to synchronize against this list
-		networkManagers = (List<Object>) getNetworkMarkers.invoke(null, serverConnection);
-		createServerChannelHandler();
-
-		// Find the correct list, or implicitly throw an exception
-		for (int i = 0; looking; i++) {
-			List<Object> list = Reflection.getField(serverConnection.getClass(), List.class, i).get(serverConnection);
-
-			for (Object item : list) {
-				if (!ChannelFuture.class.isInstance(item))
-					break;
-
-				// Channel future that contains the server connection
-				Channel serverChannel = ((ChannelFuture) item).channel();
-
-				serverChannels.add(serverChannel);
-				serverChannel.pipeline().addFirst(serverChannelHandler);
-				looking = false;
-			}
-		}
-	}
-
-	private void unregisterChannelHandler() {
-		if (serverChannelHandler == null)
-			return;
-
-		for (Channel serverChannel : serverChannels) {
-			final ChannelPipeline pipeline = serverChannel.pipeline();
-
-			// Remove channel handler
-			serverChannel.eventLoop().execute(new Runnable() {
-
-				@Override
-				public void run() {
-					try {
-						pipeline.remove(serverChannelHandler);
-					} catch (NoSuchElementException e) {
-						// That's fine
-					}
-				}
-
-			});
-		}
-	}
-
-	private void registerPlayers(Plugin plugin) {
-		for (Player player : plugin.getServer().getOnlinePlayers()) {
-			injectPlayer(player);
-		}
-	}
-
-	/**
-	 * Invoked when the server is starting to send a packet to a player.
-	 * <p>
-	 * Note that this is not executed on the main thread.
-	 * 
-	 * @param receiver - the receiving player, NULL for early login/status packets.
-	 * @param channel - the channel that received the packet. Never NULL.
-	 * @param packet - the packet being sent.
-	 * @return The packet to send instead, or NULL to cancel the transmission.
-	 */
-	public Object onPacketOutAsync(Player receiver, Channel channel, Object packet) {
-		return packet;
-	}
-
-	/**
-	 * Invoked when the server has received a packet from a given player.
-	 * <p>
-	 * Use {@link Channel#remoteAddress()} to get the remote address of the client.
-	 * 
-	 * @param sender - the player that sent the packet, NULL for early login/status packets.
-	 * @param channel - channel that received the packet. Never NULL.
-	 * @param packet - the packet being received.
-	 * @return The packet to recieve instead, or NULL to cancel.
-	 */
-	public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
-		return packet;
-	}
-
-	/**
-	 * Send a packet to a particular player.
-	 * <p>
-	 * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
-	 * 
-	 * @param player - the destination player.
-	 * @param packet - the packet to send.
-	 */
-	public void sendPacket(Player player, Object packet) {
-		sendPacket(getChannel(player), packet);
-	}
-
-	/**
-	 * Send a packet to a particular client.
-	 * <p>
-	 * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
-	 * 
-	 * @param channel - client identified by a channel.
-	 * @param packet - the packet to send.
-	 */
-	public void sendPacket(Channel channel, Object packet) {
-		channel.pipeline().writeAndFlush(packet);
-	}
-
-	/**
-	 * Pretend that a given packet has been received from a player.
-	 * <p>
-	 * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
-	 * 
-	 * @param player - the player that sent the packet.
-	 * @param packet - the packet that will be received by the server.
-	 */
-	public void receivePacket(Player player, Object packet) {
-		receivePacket(getChannel(player), packet);
-	}
-
-	/**
-	 * Pretend that a given packet has been received from a given client.
-	 * <p>
-	 * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
-	 * 
-	 * @param channel - client identified by a channel.
-	 * @param packet - the packet that will be received by the server.
-	 */
-	public void receivePacket(Channel channel, Object packet) {
-		channel.pipeline().context("encoder").fireChannelRead(packet);
-	}
-
-	/**
-	 * Retrieve the name of the channel injector, default implementation is "tiny-" + plugin name + "-" + a unique ID.
-	 * <p>
-	 * Note that this method will only be invoked once. It is no longer necessary to override this to support multiple instances.
-	 * 
-	 * @return A unique channel handler name.
-	 */
-	protected String getHandlerName() {
-		return "tiny-" + plugin.getName() + "-" + ID.incrementAndGet();
-	}
-
-	/**
-	 * Add a custom channel handler to the given player's channel pipeline, allowing us to intercept sent and received packets.
-	 * <p>
-	 * This will automatically be called when a player has logged in.
-	 * 
-	 * @param player - the player to inject.
-	 */
-	public void injectPlayer(Player player) {
-		injectChannelInternal(getChannel(player)).player = player;
-	}
-
-	/**
-	 * Add a custom channel handler to the given channel.
-	 * 
-	 * @param channel - the channel to inject.
-	 * @return The intercepted channel, or NULL if it has already been injected.
-	 */
-	public void injectChannel(Channel channel) {
-		injectChannelInternal(channel);
-	}
-
-	/**
-	 * Add a custom channel handler to the given channel.
-	 * 
-	 * @param channel - the channel to inject.
-	 * @return The packet interceptor.
-	 */
-	private PacketInterceptor injectChannelInternal(Channel channel) {
-		try {
-			PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
-
-			// Inject our packet interceptor
-			if (interceptor == null) {
-				interceptor = new PacketInterceptor();
-				channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
-				uninjectedChannels.remove(channel);
-			}
-
-			return interceptor;
-		} catch (IllegalArgumentException e) {
-			// Try again
-			return (PacketInterceptor) channel.pipeline().get(handlerName);
-		}
-	}
-
-	/**
-	 * Retrieve the Netty channel associated with a player. This is cached.
-	 * 
-	 * @param player - the player.
-	 * @return The Netty channel.
-	 */
-	public Channel getChannel(Player player) {
-		Channel channel = channelLookup.get(player.getName());
-
-		// Lookup channel again
-		if (channel == null) {
-			Object connection = getConnection.get(getPlayerHandle.invoke(player));
-			Object manager = getManager.get(connection);
-
-			channelLookup.put(player.getName(), channel = getChannel.get(manager));
-		}
-
-		return channel;
-	}
-
-	/**
-	 * Uninject a specific player.
-	 * 
-	 * @param player - the injected player.
-	 */
-	public void uninjectPlayer(Player player) {
-		uninjectChannel(getChannel(player));
-	}
-
-	/**
-	 * Uninject a specific channel.
-	 * <p>
-	 * This will also disable the automatic channel injection that occurs when a player has properly logged in.
-	 * 
-	 * @param channel - the injected channel.
-	 */
-	public void uninjectChannel(final Channel channel) {
-		// No need to guard against this if we're closing
-		if (!closed) {
-			uninjectedChannels.add(channel);
-		}
-
-		// See ChannelInjector in ProtocolLib, line 590
-		channel.eventLoop().execute(new Runnable() {
-
-			@Override
-			public void run() {
-				channel.pipeline().remove(handlerName);
-			}
-
-		});
-	}
-
-	/**
-	 * Determine if the given player has been injected by TinyProtocol.
-	 * 
-	 * @param player - the player.
-	 * @return TRUE if it is, FALSE otherwise.
-	 */
-	public boolean hasInjected(Player player) {
-		return hasInjected(getChannel(player));
-	}
-
-	/**
-	 * Determine if the given channel has been injected by TinyProtocol.
-	 * 
-	 * @param channel - the channel.
-	 * @return TRUE if it is, FALSE otherwise.
-	 */
-	public boolean hasInjected(Channel channel) {
-		return channel.pipeline().get(handlerName) != null;
-	}
-
-	/**
-	 * Cease listening for packets. This is called automatically when your plugin is disabled.
-	 */
-	public final void close() {
-		if (!closed) {
-			closed = true;
-
-			// Remove our handlers
-			for (Player player : plugin.getServer().getOnlinePlayers()) {
-				uninjectPlayer(player);
-			}
-
-			// Clean up Bukkit
-			HandlerList.unregisterAll(listener);
-			unregisterChannelHandler();
-		}
-	}
-
-	/**
-	 * Channel handler that is inserted into the player's channel pipeline, allowing us to intercept sent and received packets.
-	 * 
-	 * @author Kristian
-	 */
-	private final class PacketInterceptor extends ChannelDuplexHandler {
-		// Updated by the login event
-		public volatile Player player;
-
-		@Override
-		public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-			// Intercept channel
-			final Channel channel = ctx.channel();
-			handleLoginStart(channel, msg);
-
-			try {
-				msg = onPacketInAsync(player, channel, msg);
-			} catch (Exception e) {
-				plugin.getLogger().log(Level.SEVERE, "Error in onPacketInAsync().", e);
-			}
-
-			if (msg != null) {
-				super.channelRead(ctx, msg);
-			}
-		}
-
-		@Override
-		public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
-			try {
-				msg = onPacketOutAsync(player, ctx.channel(), msg);
-			} catch (Exception e) {
-				plugin.getLogger().log(Level.SEVERE, "Error in onPacketOutAsync().", e);
-			}
-
-			if (msg != null) {
-				super.write(ctx, msg, promise);
-			}
-		}
-
-		private void handleLoginStart(Channel channel, Object packet) {
-			if (PACKET_LOGIN_IN_START.isInstance(packet)) {
-				GameProfile profile = getGameProfile.get(packet);
-				channelLookup.put(profile.getName(), channel);
-			}
-		}
-	}
-}

src/main/java/io/github/retrooper/packetevents/PacketEvents.java

@@ -0,0 +1,147 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents;
+
+import io.github.retrooper.packetevents.api.PacketEventsAPI;
+import io.github.retrooper.packetevents.enums.ClientVersion;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.event.impl.BukkitMoveEvent;
+import io.github.retrooper.packetevents.packet.PacketType;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.settings.PacketEventsSettings;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.utils.nms_entityfinder.EntityFinderUtils;
+import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerMoveEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.plugin.Plugin;
+
+public final class PacketEvents implements PacketListener, Listener {
+
+    private static final PacketEventsAPI packetEventsAPI = new PacketEventsAPI();
+    private static final PacketEvents instance = new PacketEvents();
+    private static final PacketEventsSettings settings = new PacketEventsSettings();
+    private static Plugin plugin;
+    private static boolean hasLoaded, hasStarted;
+
+    /**
+     * Call this before start()
+     *
+     * Recommended on your onLoad() Bukkit Method
+     */
+    public static void load() {
+        //SERVER VERSION LOADING
+
+        //Server Version loading
+        ServerVersion.load();
+
+        ServerVersion version = ServerVersion.getVersion();
+        WrappedPacket.version = version;
+        PacketEvent.version = version;
+        NMSUtils.version = version;
+        EntityFinderUtils.version = version;
+
+        NMSUtils.load();
+
+        PacketTypeClasses.Client.load();
+        PacketTypeClasses.Server.load();
+
+        EntityFinderUtils.load();
+
+        WrappedPacket.loadAllWrappers();
+
+        VersionLookupUtils.load();
+        ClientVersion.prepareLookUp();
+        hasLoaded = true;
+    }
+
+    /**
+     * Loads PacketEvents if you haven't already, Sets everything up, injects all players
+     * @param pl Plugin instance
+     */
+    public static void start(final Plugin pl) {
+        if (!hasLoaded) {
+            load();
+        }
+        if (!hasStarted) {
+            plugin = pl;
+            //Register Bukkit and PacketListener
+            getAPI().getEventManager().registerListener(instance);
+
+            Bukkit.getPluginManager().registerEvents(instance, plugin);
+
+            for (final Player p : Bukkit.getOnlinePlayers()) {
+                getAPI().getPlayerUtils().injectPlayer(p);
+            }
+            hasStarted = true;
+        }
+    }
+
+    /**
+     * Stop all tasks and unregisters all PacketEvents' listeners
+     */
+    public static void stop() {
+        if (hasStarted) {
+            for (final Player p : Bukkit.getOnlinePlayers()) {
+                getAPI().getPlayerUtils().uninjectPlayer(p);
+            }
+            getAPI().getEventManager().unregisterAllListeners();
+
+            PacketType.Client.packetIds.clear();
+            PacketType.Server.packetIds.clear();
+        }
+    }
+
+    public static boolean hasLoaded() {
+        return hasLoaded;
+    }
+
+    public static boolean hasStarted() {
+        return hasStarted;
+    }
+
+    public static PacketEventsAPI getAPI() {
+        return packetEventsAPI;
+    }
+
+    public static Plugin getPlugin() {
+        return plugin;
+    }
+
+    public static String getHandlerName(final String name) {
+        return "pe-" + settings.getIdentifier() + "-" + name;
+    }
+
+    public static PacketEventsSettings getSettings() {
+        return settings;
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST, ignoreCancelled = true)
+    public void onJoin(final PlayerJoinEvent e) {
+        getAPI().getPlayerUtils().injectPlayer(e.getPlayer());
+        getAPI().getPlayerUtils().setClientVersion(e.getPlayer(), ClientVersion.fromProtocolVersion((short) VersionLookupUtils.getProtocolVersion(e.getPlayer())));
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST, ignoreCancelled = true)
+    public void onQuit(final PlayerQuitEvent e) {
+        getAPI().getPlayerUtils().clearClientVersion(e.getPlayer());
+        getAPI().getPlayerUtils().uninjectPlayer(e.getPlayer());
+    }
+
+    @EventHandler
+    public void onMove(final PlayerMoveEvent e) {
+        BukkitMoveEvent moveEvent = new BukkitMoveEvent(e);
+        getAPI().getEventManager().callEvent(moveEvent);
+        e.setCancelled(moveEvent.isCancelled());
+    }
+}

src/main/java/io/github/retrooper/packetevents/annotations/Beta.java

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2020 retrooper
+ */
+
+package io.github.retrooper.packetevents.annotations;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * This annotation indicates that something might be unstable.
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Beta {
+}

src/main/java/io/github/retrooper/packetevents/annotations/NotNull.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.annotations;
+
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Is for sure not null.
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+public @interface NotNull {
+
+
+}

src/main/java/io/github/retrooper/packetevents/annotations/Nullable.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.annotations;
+
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Could be null.
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Nullable {
+
+
+}

src/main/java/io/github/retrooper/packetevents/annotations/PacketHandler.java

@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.annotations;
+
+import io.github.retrooper.packetevents.enums.EventSynchronization;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+/**
+ * Just like Bukkit's @EventHandler, but for PacketEvents' custom event system.
+ * Make sure your class implements the PacketListener interface, and is registered when annotating your method with this annotation!
+ */
+public @interface PacketHandler {
+    EventSynchronization synchronization() default EventSynchronization.NORMAL;
+}

src/main/java/io/github/retrooper/packetevents/api/PacketEventsAPI.java

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.api;
+
+import io.github.retrooper.packetevents.event.manager.EventManager;
+import io.github.retrooper.packetevents.utils.api.PlayerUtils;
+import io.github.retrooper.packetevents.utils.api.ServerUtils;
+
+public final class PacketEventsAPI {
+    private final EventManager eventManager = new EventManager();
+    private final PlayerUtils playerUtils = new PlayerUtils();
+    private final ServerUtils serverUtils = new ServerUtils();
+
+    /**
+     * Not thread safe
+     * Preciser than #currentMillis()
+     * Expensive
+     * Returns crazy values when you change system time
+     *
+     * @return {@link System#nanoTime()} / 1000000(1 million)
+     */
+    public long currentPreciseMillis() {
+        return System.nanoTime() / 1000000;
+    }
+
+    /**
+     * Thread safe
+     * Less precise compared to #currentPreciseMillis()
+     * Cheap
+     * Doesn't break when system time is changed
+     *
+     * @return {@link System#currentTimeMillis()}
+     */
+    public long currentMillis() {
+        return System.currentTimeMillis();
+    }
+
+    /**
+     * Get all utilities to do with the player
+     *
+     * @return Player Utilities
+     */
+    public PlayerUtils getPlayerUtils() {
+        return playerUtils;
+    }
+
+    /**
+     * Get all utilities to do with the server
+     *
+     * @return Server Utilities
+     */
+    public ServerUtils getServerUtils() {
+        return serverUtils;
+    }
+
+
+    /**
+     * Get the event manager
+     * Used to call events, register and unregister listeners
+     *
+     * @return PacketEvents' event manager
+     */
+    public EventManager getEventManager() {
+        return eventManager;
+    }
+}

src/main/java/io/github/retrooper/packetevents/enums/ClientVersion.java

@@ -0,0 +1,109 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.enums;
+
+import io.github.retrooper.packetevents.PacketEvents;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public enum ClientVersion {
+    LESS_THAN_V_1_7_10, v_1_7_10, v_1_8, v_1_9, v_1_9_1, v_1_9_2, v_1_9_3, v_1_10, v_1_11, v_1_11_1, v_1_12, v_1_12_1, v_1_12_2,
+    v_1_13, v_1_13_1, v_1_13_2, v_1_14, v_1_14_1, v_1_14_2, v_1_14_3, v_1_14_4, v_1_15_PRE_1, v_1_15_PRE_2, v_1_15_PRE_3, v_1_15_PRE_4, v_1_15_PRE_5, v_1_15_PRE_6, v_1_15_PRE_7,
+    v_1_15, v_1_15_1, v_1_15_2, v_1_16, v_1_16_PRE_1, v_1_16_PRE_2, v_1_16_PRE_3, v_1_16_PRE_4, v_1_16_PRE_5, v_1_16_PRE_6, v_1_16_PRE_7, v_1_16_PRE_8, v_1_16_RC_1, v_1_16_1, v_1_16_2, HIGHER_THAN_V_1_16_2, INVALID, ACCESS_FAILURE;
+
+    private static final Map<Integer, ClientVersion> VERSION_LOOKUP = new HashMap<Integer, ClientVersion>();
+
+    public static void prepareLookUp() {
+        VERSION_LOOKUP.put(-1, ACCESS_FAILURE);
+        VERSION_LOOKUP.put(1, LESS_THAN_V_1_7_10);
+        VERSION_LOOKUP.put(2, LESS_THAN_V_1_7_10);
+        VERSION_LOOKUP.put(3, LESS_THAN_V_1_7_10);
+        VERSION_LOOKUP.put(4, LESS_THAN_V_1_7_10);
+        VERSION_LOOKUP.put(5, v_1_7_10);
+        VERSION_LOOKUP.put(47, v_1_8);
+        VERSION_LOOKUP.put(107, v_1_9);
+        VERSION_LOOKUP.put(108, v_1_9_1);
+        VERSION_LOOKUP.put(109, v_1_9_2);
+        VERSION_LOOKUP.put(110, v_1_9_3);
+        VERSION_LOOKUP.put(210, v_1_10);
+        VERSION_LOOKUP.put(315, v_1_11);
+        VERSION_LOOKUP.put(316, v_1_11_1);
+        VERSION_LOOKUP.put(335, v_1_12);
+        VERSION_LOOKUP.put(338, v_1_12_1);
+        VERSION_LOOKUP.put(340, v_1_12_2);
+        VERSION_LOOKUP.put(393, v_1_13);
+        VERSION_LOOKUP.put(401, v_1_13_1);
+        VERSION_LOOKUP.put(404, v_1_13_2);
+        VERSION_LOOKUP.put(477, v_1_14);
+        VERSION_LOOKUP.put(480, v_1_14_1);
+        VERSION_LOOKUP.put(485, v_1_14_2);
+        VERSION_LOOKUP.put(490, v_1_14_3);
+        VERSION_LOOKUP.put(498, v_1_14_4);
+        VERSION_LOOKUP.put(565, v_1_15_PRE_1);
+        VERSION_LOOKUP.put(566, v_1_15_PRE_2);
+        VERSION_LOOKUP.put(567, v_1_15_PRE_3);
+        VERSION_LOOKUP.put(569, v_1_15_PRE_4);
+        VERSION_LOOKUP.put(570, v_1_15_PRE_5);
+        VERSION_LOOKUP.put(571, v_1_15_PRE_6);
+        VERSION_LOOKUP.put(572, v_1_15_PRE_7);
+        VERSION_LOOKUP.put(573, v_1_15);
+        VERSION_LOOKUP.put(575, v_1_15_1);
+        VERSION_LOOKUP.put(578, v_1_15_2);
+        VERSION_LOOKUP.put(721, v_1_16_PRE_1);
+        VERSION_LOOKUP.put(722, v_1_16_PRE_2);
+        VERSION_LOOKUP.put(725, v_1_16_PRE_3);
+        VERSION_LOOKUP.put(727, v_1_16_PRE_4);
+        VERSION_LOOKUP.put(729, v_1_16_PRE_5);
+        VERSION_LOOKUP.put(730, v_1_16_PRE_6);
+        VERSION_LOOKUP.put(732, v_1_16_PRE_7);
+        VERSION_LOOKUP.put(733, v_1_16_PRE_8);
+        VERSION_LOOKUP.put(734, v_1_16_RC_1);
+        VERSION_LOOKUP.put(735, v_1_16);
+        VERSION_LOOKUP.put(736, v_1_16_1);
+        VERSION_LOOKUP.put(737, v_1_16_2);
+    }
+
+    public static ClientVersion fromProtocolVersion(short protocolVersion) {
+        if (protocolVersion == -1 && PacketEvents.getSettings().doAutoResolveClientProtocolVersion()) {
+            protocolVersion = ServerVersion.getVersion().toProtocolVersion();
+        }
+        final ClientVersion lookedUp = VERSION_LOOKUP.get(protocolVersion);
+        if (lookedUp != null) {
+            return lookedUp;
+        }
+        return protocolVersion > 737 ? HIGHER_THAN_V_1_16_2 : INVALID;
+    }
+
+    /**
+     * Returns if the client's version is more up to date than the argument passed version
+     *
+     * @param version The version to compare to the client's value.
+     * @return True if the supplied version is lower, false if it is equal or higher than the client's version.
+     */
+    public boolean isHigherThan(final ClientVersion version) {
+        if (this == version) return false;
+        return !isLowerThan(version);
+    }
+
+    /**
+     * Returns if the client's version is more outdated than the argument passed version
+     *
+     * @param version The version to compare to the client's value.
+     * @return True if the supplied version is higher, false if it is equal or lower than the client's version.
+     */
+    public boolean isLowerThan(final ClientVersion version) {
+        if (this == version) return false;
+        final int len = ClientVersion.values().length;
+        for (byte i = 0; i < len; i++) {
+            final ClientVersion v = ClientVersion.values()[i];
+            if (v == this) {
+                return true;
+            } else if (v == version) {
+                return false;
+            }
+        }
+        return false;
+    }
+}

src/main/java/io/github/retrooper/packetevents/enums/Direction.java

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.enums;
+
+public enum Direction {
+    DOWN, UP, NORTH, SOUTH, WEST, EAST, NORTH_EAST,
+    NORTH_WEST, SOUTH_EAST,
+    SOUTH_WEST, WEST_NORTH_WEST,
+    NORTH_NORTH_WEST, NORTH_NORTH_EAST,
+    EAST_NORTH_EAST, EAST_SOUTH_EAST,
+    SOUTH_SOUTH_EAST, SOUTH_SOUTH_WEST,
+    WEST_SOUTH_WEST, SELF, NULL;
+
+    public static Direction get(final int i) {
+        return values()[i];
+    }
+}

src/main/java/io/github/retrooper/packetevents/enums/EventSynchronization.java

@@ -0,0 +1,8 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.enums;
+
+public enum EventSynchronization {
+    NORMAL, FORCE_SYNC, FORCE_ASYNC
+}

src/main/java/io/github/retrooper/packetevents/enums/ServerVersion.java

@@ -0,0 +1,178 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.enums;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import org.bukkit.Bukkit;
+
+/**
+ * @author retrooper
+ */
+public enum ServerVersion {
+
+    v_1_7_10, v_1_8, v_1_8_3, v_1_8_4, v_1_8_5, v_1_8_6, v_1_8_7, v_1_8_8,
+    v_1_9, v_1_9_2, v_1_9_4, v_1_10, v_1_10_2, v_1_11, v_1_11_1, v_1_11_2,
+    v_1_12, v_1_12_1, v_1_12_2, v_1_13, v_1_13_1, v_1_13_2, v_1_14, v_1_14_1,
+    v_1_14_2, v_1_14_3, v_1_14_4, v_1_15, v_1_15_1, v_1_15_2, v_1_16, v_1_16_1,
+    v_1_16_2, ERROR, EMPTY;
+
+    private static final String nmsVersionSuffix = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
+    public static ServerVersion[] reversedValues;
+    private static ServerVersion cachedVersion;
+
+    public static void load() {
+        reversedValues = ServerVersion.reverse(values());
+    }
+
+    private static ServerVersion getVersionNoCache() {
+        for (final ServerVersion val : reversedValues) {
+            String valName = val.name().substring(2).replace("_", ".");
+            if (Bukkit.getBukkitVersion().contains(valName)) {
+                return val;
+            } else if (PacketEvents.getSettings().getDefaultServerVersion() != null) {
+                return PacketEvents.getSettings().getDefaultServerVersion();
+            }
+        }
+        return ERROR;
+    }
+
+    public static ServerVersion getVersion() {
+        if (cachedVersion == null) {
+            cachedVersion = getVersionNoCache();
+        }
+        return cachedVersion;
+    }
+
+
+    public static ServerVersion[] reverse(final ServerVersion[] arr) {
+        ServerVersion[] array = arr.clone();
+        if (array == null) {
+            return null;
+        }
+        int i = 0;
+        int j = array.length - 1;
+        ServerVersion tmp;
+        while (j > i) {
+            tmp = array[j];
+            array[j] = array[i];
+            array[i] = tmp;
+            j--;
+            i++;
+        }
+        return array;
+    }
+
+    public static String getNmsSuffix() {
+        return nmsVersionSuffix;
+    }
+
+    public static String getNMSDirectory() {
+        return "net.minecraft.server." + getNmsSuffix();
+    }
+
+    public static String getOBCDirectory() {
+        return "org.bukkit.craftbukkit." + getNmsSuffix();
+    }
+
+    /**
+     * Returns if the current version is more up to date than the argument passed version
+     *
+     * @param version The version to compare to the server's value.
+     * @return True if the supplied version is lower, false if it is equal or higher than the server's version.
+     */
+    public boolean isHigherThan(final ServerVersion version) {
+        if (this == version) return false;
+        return !isLowerThan(version);
+    }
+
+    /**
+     * Returns if the current version is more outdated than the argument passed version
+     *
+     * @param version The version to compare to the server's value.
+     * @return True if the supplied version is higher, false if it is equal or lower than the server's version.
+     */
+    public boolean isLowerThan(final ServerVersion version) {
+        if (this == version) return false;
+        final int len = ServerVersion.values().length;
+        for (byte i = 0; i < len; i++) {
+            final ServerVersion v = ServerVersion.values()[i];
+            if (v == this) {
+                return true;
+            } else if (v == version) {
+                return false;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Converts the server version to a protocol version.
+     * Recommended to cache.
+     * @return protocol version
+     */
+    public short toProtocolVersion() {
+        switch (this) {
+            case v_1_7_10:
+                return 5;
+            case v_1_8:
+            case v_1_8_3:
+            case v_1_8_4:
+            case v_1_8_5:
+            case v_1_8_6:
+            case v_1_8_7:
+            case v_1_8_8:
+                return 47;
+            case v_1_9:
+                return 107;
+            case v_1_9_2:
+                return 109;
+            case v_1_9_4:
+                return 110;
+            case v_1_10:
+            case v_1_10_2:
+                return 210;
+            case v_1_11:
+                return 315;
+            case v_1_11_1:
+            case v_1_11_2:
+                return 316;
+            case v_1_12:
+                return 335;
+            case v_1_12_1:
+                return 338;
+            case v_1_12_2:
+                return 340;
+            case v_1_13:
+                return 393;
+            case v_1_13_1:
+                return 401;
+            case v_1_13_2:
+                return 404;
+            case v_1_14:
+                return 477;
+            case v_1_14_1:
+                return 480;
+            case v_1_14_2:
+                return 485;
+            case v_1_14_3:
+                return 490;
+            case v_1_14_4:
+                return 498;
+            case v_1_15:
+                return 573;
+            case v_1_15_1:
+                return 575;
+            case v_1_15_2:
+                return 578;
+            case v_1_16:
+                return 735;
+            case v_1_16_1:
+                return 736;
+            case v_1_16_2:
+                return 751;
+            default:
+                return -1;
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/enums/SystemOS.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.enums;
+
+public enum SystemOS {
+    WINDOWS, MACOS, LINUX, OTHER;
+
+    private static SystemOS value;
+
+    private static SystemOS getOS() {
+        final String os = System.getProperty("os.name");
+        for (final String osName : getOperatingSystemNames()) {
+            if (os.toLowerCase().contains(osName.toLowerCase())) {
+                return SystemOS.valueOf(osName);
+            }
+        }
+        return OTHER;
+    }
+
+    public static SystemOS getOperatingSystem() {
+        if (value == null) {
+            value = getOS();
+        }
+        return value;
+    }
+
+    public static String[] getOperatingSystemNames() {
+        final String[] arr = new String[values().length - 1];
+        for (int i = 0; i < values().length - 1; i++) {
+            arr[i] = values()[i].name();
+        }
+        return arr;
+    }
+}

src/main/java/io/github/retrooper/packetevents/event/PacketEvent.java

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event;
+
+
+import io.github.retrooper.packetevents.enums.ServerVersion;
+
+public abstract class PacketEvent {
+    public static ServerVersion version;
+    private long timestamp = System.currentTimeMillis();
+
+    /**
+     * Timestamp of the packet
+     *
+     * @return timestamp in milliseconds
+     */
+    public long getTimestamp() {
+        return timestamp;
+    }
+
+    public void setTimestamp(long timestamp) {
+        this.timestamp = timestamp;
+    }
+
+    public abstract boolean isAsyncByDefault();
+}

src/main/java/io/github/retrooper/packetevents/event/PacketListener.java

@@ -0,0 +1,7 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event;
+
+public interface PacketListener {
+}

src/main/java/io/github/retrooper/packetevents/event/impl/BukkitMoveEvent.java

@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerMoveEvent;
+
+public final class BukkitMoveEvent extends PacketEvent {
+    private final Player player;
+    private final Location to, from;
+    private boolean cancelled;
+
+    public BukkitMoveEvent(final Player player, final Location to, final Location from) {
+        this.player = player;
+        this.to = to;
+        this.from = from;
+    }
+
+    public BukkitMoveEvent(final PlayerMoveEvent e) {
+        this.player = e.getPlayer();
+        this.to = e.getTo();
+        this.from = e.getFrom();
+    }
+
+    public Player getPlayer() {
+        return player;
+    }
+
+    public Location getFrom() {
+        return from;
+    }
+
+    public Location getTo() {
+        return to;
+    }
+
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    public void setCancelled(final boolean val) {
+        this.cancelled = val;
+    }
+
+    public void cancel() {
+        setCancelled(true);
+    }
+
+    @Override
+    public boolean isAsyncByDefault() {
+        return false;
+    }
+}

src/main/java/io/github/retrooper/packetevents/event/impl/PacketReceiveEvent.java

@@ -0,0 +1,90 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.packet.PacketType;
+import org.bukkit.entity.Player;
+
+public final class PacketReceiveEvent extends PacketEvent {
+    private final Player player;
+    private final Object packet;
+    private boolean cancelled;
+
+    public PacketReceiveEvent(final Player player, final Object packet) {
+        this.player = player;
+        this.packet = packet;
+    }
+
+    /**
+     * Get the player sending the packet
+     *
+     * @return player
+     */
+    public Player getPlayer() {
+        return this.player;
+    }
+
+    /**
+     * Get the packet's name (NMS packet class simple name).
+     * @deprecated It is recommended not to use this, it is an expensive method to call.
+     * @return Name of the packet
+     */
+    @Deprecated
+    public String getPacketName() {
+        return this.packet.getClass().getSimpleName();
+    }
+
+    /**
+     * Get the NMS packet object
+     *
+     * @return packet object
+     */
+    public Object getNMSPacket() {
+        return this.packet;
+    }
+
+    /**
+     * Get the class of the NMS packet object
+     * Deprecated, as it is useless, rather use getNMSPacket().getClass()
+     *
+     * @return packet object class
+     */
+    @Deprecated
+    public Class<?> getNMSPacketClass() {
+        return packet.getClass();
+    }
+
+    /**
+     * Get the ID of the packet
+     *
+     * @return packet id
+     */
+    public byte getPacketId() {
+        return PacketType.Client.packetIds.getOrDefault(packet.getClass(), (byte) -1);
+    }
+
+    /**
+     * Returns if the packet has been cancelled
+     *
+     * @return cancelled
+     */
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    /**
+     * Cancel the packet
+     *
+     * @param cancelled boolean
+     */
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
+
+    @Override
+    public boolean isAsyncByDefault() {
+        return true;
+    }
+}

src/main/java/io/github/retrooper/packetevents/event/impl/PacketSendEvent.java

@@ -0,0 +1,79 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.packet.PacketType;
+import org.bukkit.entity.Player;
+
+
+public final class PacketSendEvent extends PacketEvent {
+    private final Player player;
+    private final Object packet;
+    private boolean cancelled;
+
+    public PacketSendEvent(final Player player, final Object packet) {
+        this.player = player;
+        this.packet = packet;
+        this.cancelled = false;
+    }
+
+
+    public Player getPlayer() {
+        return this.player;
+    }
+
+    /**
+     * Get the packet's name (NMS packet class simple name)
+     * @deprecated It is recommended not to use this, as it is an expensive function to call.
+     * @return Name of the packet
+     */
+    @Deprecated
+    public String getPacketName() {
+        return this.packet.getClass().getSimpleName();
+    }
+
+    /**
+     * Get the ID of the packet
+     *
+     * @return packet id
+     */
+    public byte getPacketId() {
+        return PacketType.Server.packetIds.getOrDefault(packet.getClass(), (byte) -1);
+    }
+
+    /**
+     * Get the NMS packet object
+     *
+     * @return packet object
+     */
+    public Object getNMSPacket() {
+        return this.packet;
+    }
+
+    /**
+     * Get the class of the NMS packet object.
+     * Deprecated because it is useless, rather use getNMSPacket().getClass().
+     *
+     * @return packet object class
+     */
+    @Deprecated
+    public Class<?> getNMSPacketClass() {
+        return packet.getClass();
+    }
+
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
+
+    @Override
+    public boolean isAsyncByDefault() {
+        return true;
+    }
+}
+

src/main/java/io/github/retrooper/packetevents/event/impl/PlayerInjectEvent.java

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import org.bukkit.entity.Player;
+
+public final class PlayerInjectEvent extends PacketEvent {
+    private final Player player;
+    private boolean cancelled;
+
+    public PlayerInjectEvent(final Player player) {
+        this.player = player;
+    }
+
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
+
+    public void cancel() {
+        setCancelled(true);
+    }
+
+    public Player getPlayer() {
+        return player;
+    }
+
+    @Override
+    public boolean isAsyncByDefault() {
+        return false;
+    }
+}

src/main/java/io/github/retrooper/packetevents/event/impl/PlayerUninjectEvent.java

@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import org.bukkit.entity.Player;
+
+public final class PlayerUninjectEvent extends PacketEvent {
+    private final Player player;
+    private final boolean sync;
+    private boolean cancelled;
+
+    @Deprecated
+    public PlayerUninjectEvent(final Player player, @Deprecated final boolean sync) {
+        this.player = player;
+        this.sync = sync;
+    }
+
+    public PlayerUninjectEvent(final Player player) {
+        this.player = player;
+        this.sync = true;
+    }
+
+    public void cancel() {
+        setCancelled(true);
+    }
+
+    public boolean isCancelled() {
+        return this.cancelled;
+    }
+
+    public void setCancelled(final boolean val) {
+        this.cancelled = val;
+    }
+
+    /**
+     * Whether the uninjection was called synchronously or asynchronously.
+     * The event is still called synchronously.
+     * By default all uninjections are called aynchronously in this build.
+     *
+     * @return If the uninjection was done async or sync
+     * @deprecated because it is unneeded
+     */
+    @Deprecated
+    public boolean isSync() {
+        return sync;
+    }
+
+    public Player getPlayer() {
+        return player;
+    }
+
+    @Override
+    public boolean isAsyncByDefault() {
+        return false;
+    }
+}

src/main/java/io/github/retrooper/packetevents/event/manager/EventManager.java

@@ -0,0 +1,97 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.event.manager;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.annotations.PacketHandler;
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.PacketListener;
+import org.bukkit.Bukkit;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public final class EventManager {
+    private final HashMap<PacketListener, List<Method>> registeredMethods = new HashMap<PacketListener, List<Method>>();
+
+    public void callEvent(final PacketEvent e) {
+        for (final PacketListener listener : registeredMethods.keySet()) {
+            //Annotated methods
+            final List<Method> methods = registeredMethods.get(listener);
+            for (final Method method : methods) {
+                final Class<?> parameterType = method.getParameterTypes()[0];
+                if (parameterType.equals(PacketEvent.class)
+                        || parameterType.isInstance(e)) {
+                    final PacketHandler annotation = method.getAnnotation(PacketHandler.class);
+                    final Runnable invokeMethod = new Runnable() {
+                        @Override
+                        public void run() {
+                            try {
+                                method.invoke(listener, e);
+                            } catch (IllegalAccessException | InvocationTargetException ex) {
+                                ex.printStackTrace();
+                            }
+                        }
+                    };
+
+                    switch (annotation.synchronization()) {
+                        case FORCE_ASYNC:
+                            Bukkit.getScheduler().runTaskAsynchronously(PacketEvents.getPlugin(), invokeMethod);
+                            break;
+                        case FORCE_SYNC:
+                            Bukkit.getScheduler().runTask(PacketEvents.getPlugin(), invokeMethod);
+                            break;
+                        default:
+                            try {
+                                method.invoke(listener, e);
+                            } catch (IllegalAccessException | InvocationTargetException ex) {
+                                ex.printStackTrace();
+                            }
+                            break;
+                    }
+                }
+            }
+        }
+    }
+
+    public void registerListener(final PacketListener e) {
+        final List<Method> methods = new ArrayList<Method>();
+        for (final Method m : e.getClass().getMethods()) {
+            if (m.isAnnotationPresent(PacketHandler.class)
+                    && m.getParameterTypes().length == 1) {
+                methods.add(m);
+            }
+        }
+        if (!methods.isEmpty()) {
+            registeredMethods.put(e, methods);
+        }
+    }
+
+    public void registerListeners(final PacketListener... listeners) {
+        for (final PacketListener listener : listeners) {
+            registerListener(listener);
+        }
+    }
+
+    public void unregisterListener(final PacketListener e) {
+        registeredMethods.remove(e);
+    }
+
+    public void unregisterListeners(final PacketListener... listeners) {
+        for (final PacketListener listener : listeners) {
+            unregisterListener(listener);
+        }
+    }
+
+    public void unregisterAllListeners() {
+        registeredMethods.clear();
+    }
+
+    public boolean isRegistered(final PacketListener listener) {
+        return registeredMethods.containsKey(listener);
+    }
+}

src/main/java/io/github/retrooper/packetevents/example/MainExample.java

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.example;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.annotations.PacketHandler;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
+import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
+import io.github.retrooper.packetevents.packet.PacketType;
+import io.github.retrooper.packetevents.packetwrappers.in.useentity.WrappedPacketInUseEntity;
+import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
+import org.bukkit.plugin.java.JavaPlugin;
+public class MainExample extends JavaPlugin implements PacketListener {
+
+    @Override
+    public void onLoad() {
+        PacketEvents.load();
+    }
+
+    @Override
+    public void onEnable() {
+
+        PacketEvents.getSettings().setDefaultServerVersion(ServerVersion.v_1_7_10);
+
+        //ClientVersion cannot be resolved, it is the same as the server's.
+        //The clientversion can only not be resolved if
+        // ViaVersion, ProtocolSuppport, or ProtocolLib isn't present.
+        //ClientVersion might be resolvable if the server version is 1.7.10.
+        PacketEvents.getSettings().setDoAutoResolveClientProtocolVersion(true);
+
+        //Deprecated, as it is no longer needed
+        //PacketEvents.getSettings().setIdentifier("packetevents_api");
+
+        PacketEvents.start(this);
+        PacketEvents.getAPI().getEventManager().registerListener(this);
+    }
+
+    @Override
+    public void onDisable() {
+        PacketEvents.stop();
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/handler/NettyPacketHandler.java

@@ -0,0 +1,88 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.handler;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
+import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
+import io.github.retrooper.packetevents.event.impl.PlayerInjectEvent;
+import io.github.retrooper.packetevents.event.impl.PlayerUninjectEvent;
+import org.bukkit.entity.Player;
+
+import java.util.concurrent.Future;
+
+public class NettyPacketHandler {
+    private static boolean v1_7_nettyMode = false;
+
+    static {
+        try {
+            Class.forName("io.netty.channel.Channel");
+        } catch (ClassNotFoundException e) {
+            v1_7_nettyMode = true;
+        }
+    }
+
+    public static void injectPlayer(final Player player) {
+        final PlayerInjectEvent injectEvent = new PlayerInjectEvent(player);
+        PacketEvents.getAPI().getEventManager().callEvent(injectEvent);
+        if (!injectEvent.isCancelled()) {
+            if (v1_7_nettyMode) {
+                NettyPacketHandler_7.injectPlayer(player);
+            } else {
+                NettyPacketHandler_8.injectPlayer(player);
+            }
+        }
+    }
+
+    public static Future<?> uninjectPlayerAsync(final Player player) {
+        try {
+            final PlayerUninjectEvent uninjectEvent = new PlayerUninjectEvent(player);
+            PacketEvents.getAPI().getEventManager().callEvent(uninjectEvent);
+            if (!uninjectEvent.isCancelled()) {
+                if (v1_7_nettyMode) {
+                    return NettyPacketHandler_7.uninjectPlayerAsync(player);
+                } else {
+                    return NettyPacketHandler_8.uninjectPlayerAsync(player);
+                }
+            }
+        } catch (Exception ignored) {
+
+        }
+        return null;
+    }
+
+    public static void uninjectPlayer(final Player player) {
+        try {
+            final PlayerUninjectEvent uninjectEvent = new PlayerUninjectEvent(player);
+            PacketEvents.getAPI().getEventManager().callEvent(uninjectEvent);
+            if (!uninjectEvent.isCancelled()) {
+                if (v1_7_nettyMode) {
+                    NettyPacketHandler_7.uninjectPlayer(player);
+                } else {
+                    NettyPacketHandler_8.uninjectPlayer(player);
+                }
+            }
+        } catch (Exception ex) {
+            //Failed, but that is alright
+        }
+    }
+
+    public static Object write(final Player sender, final Object packet) {
+        final PacketSendEvent packetSendEvent = new PacketSendEvent(sender, packet);
+        PacketEvents.getAPI().getEventManager().callEvent(packetSendEvent);
+        if (!packetSendEvent.isCancelled()) {
+            return packet;
+        }
+        return null;
+    }
+
+    public static Object read(final Player receiver, final Object packet) {
+        final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(receiver, packet);
+        PacketEvents.getAPI().getEventManager().callEvent(packetReceiveEvent);
+        if (!packetReceiveEvent.isCancelled()) {
+            return packet;
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/handler/NettyPacketHandler_7.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.handler;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import net.minecraft.util.io.netty.channel.*;
+import org.bukkit.entity.Player;
+
+import java.util.concurrent.Future;
+
+final class NettyPacketHandler_7 {
+
+    public static void injectPlayer(final Player player) {
+        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Object packet = NettyPacketHandler.read(player, msg);
+                if (packet == null) {
+                    return;
+                }
+                super.channelRead(ctx, msg);
+            }
+
+            @Override
+            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                Object packet = NettyPacketHandler.write(player, msg);
+                if (packet == null) {
+                    return;
+                }
+                super.write(ctx, msg, promise);
+            }
+        };
+        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
+        pipeline.addBefore("packet_handler", PacketEvents.getHandlerName(player.getName()), channelDuplexHandler);
+    }
+
+    public static void uninjectPlayer(final Player player) {
+        final Channel channel = (Channel) NMSUtils.getChannel(player);
+        channel.pipeline().remove(PacketEvents.getHandlerName(player.getName()));
+    }
+
+    public static Future<?> uninjectPlayerAsync(final Player player) {
+        final Channel channel = (Channel) NMSUtils.getChannel(player);
+        return channel.eventLoop().submit(() -> {
+            channel.pipeline().remove(PacketEvents.getHandlerName(player.getName()));
+        });
+    }
+}

src/main/java/io/github/retrooper/packetevents/handler/NettyPacketHandler_8.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.handler;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.netty.channel.*;
+import org.bukkit.entity.Player;
+
+import java.util.concurrent.Future;
+
+final class NettyPacketHandler_8 {
+
+    public static void injectPlayer(final Player player) {
+        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Object packet = NettyPacketHandler.read(player, msg);
+                if (packet == null) {
+                    return;
+                }
+                super.channelRead(ctx, msg);
+            }
+
+            @Override
+            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                Object packet = NettyPacketHandler.write(player, msg);
+                if (packet == null) {
+                    return;
+                }
+                super.write(ctx, msg, promise);
+            }
+        };
+        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
+        pipeline.addBefore("packet_handler", PacketEvents.getHandlerName(player.getName()), channelDuplexHandler);
+    }
+
+    public static void uninjectPlayer(final Player player) {
+        final Channel channel = (Channel) NMSUtils.getChannel(player);
+        channel.pipeline().remove(PacketEvents.getHandlerName(player.getName()));
+    }
+
+    public static Future<?> uninjectPlayerAsync(final Player player) {
+        final Channel channel = (Channel) NMSUtils.getChannel(player);
+        return channel.eventLoop().submit(() -> {
+            channel.pipeline().remove(PacketEvents.getHandlerName(player.getName()));
+        });
+    }
+}

src/main/java/io/github/retrooper/packetevents/packet/PacketType.java

@@ -0,0 +1,219 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packet;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class PacketType {
+
+    public static class Client {
+        public static final Map<Class<?>, Byte> packetIds = new HashMap<Class<?>, Byte>();
+        public static final byte TELEPORT_ACCEPT = 0,
+                TILE_NBT_QUERY = 1, DIFFICULTY_CHANGE = 2, CHAT = 3, CLIENT_COMMAND = 4,
+                SETTINGS = 5, TAB_COMPLETE = 6, TRANSACTION = 7, ENCHANT_ITEM = 8,
+                WINDOW_CLICK = 9, CLOSE_WINDOW = 10, CUSTOM_PAYLOAD = 11, B_EDIT = 12,
+                ENTITY_NBT_QUERY = 13, USE_ENTITY = 14, JIGSAW_GENERATE = 15, KEEP_ALIVE = 16,
+                DIFFICULTY_LOCK = 17, POSITION = 18, POSITION_LOOK = 19, LOOK = 20,
+                FLYING = 21, VEHICLE_MOVE = 22, BOAT_MOVE = 23, PICK_ITEM = 24,
+                AUTO_RECIPE = 25, ABILITIES = 26, BLOCK_DIG = 27, ENTITY_ACTION = 28,
+                STEER_VEHICLE = 29, RECIPE_DISPLAYED = 30, ITEM_NAME = 31, RESOURCE_PACK_STATUS = 32,
+                ADVANCEMENTS = 33, TR_SEL = 34, BEACON = 35, HELD_ITEM_SLOT = 36,
+                SET_COMMAND_BLOCK = 37, SET_COMMAND_MINECART = 38, SET_CREATIVE_SLOT = 39, SET_JIGSAW = 40,
+                STRUCT = 41, UPDATE_SIGN = 42, ARM_ANIMATION = 43, SPECTATE = 44,
+                USE_ITEM = 45, BLOCK_PLACE = 46;
+
+        public static void init() {
+            packetIds.put(PacketTypeClasses.Client.TELEPORT_ACCEPT, TELEPORT_ACCEPT);
+            packetIds.put(PacketTypeClasses.Client.TILE_NBT_QUERY, TILE_NBT_QUERY);
+            packetIds.put(PacketTypeClasses.Client.DIFFICULTY_CHANGE, DIFFICULTY_CHANGE);
+            packetIds.put(PacketTypeClasses.Client.CHAT, CHAT);
+            packetIds.put(PacketTypeClasses.Client.CLIENT_COMMAND, CLIENT_COMMAND);
+            packetIds.put(PacketTypeClasses.Client.SETTINGS, SETTINGS);
+            packetIds.put(PacketTypeClasses.Client.TAB_COMPLETE, TAB_COMPLETE);
+            packetIds.put(PacketTypeClasses.Client.TRANSACTION, TRANSACTION);
+            packetIds.put(PacketTypeClasses.Client.ENCHANT_ITEM, ENCHANT_ITEM);
+            packetIds.put(PacketTypeClasses.Client.WINDOW_CLICK, WINDOW_CLICK);
+            packetIds.put(PacketTypeClasses.Client.CLOSE_WINDOW, CLOSE_WINDOW);
+            packetIds.put(PacketTypeClasses.Client.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
+            packetIds.put(PacketTypeClasses.Client.B_EDIT, B_EDIT);
+            packetIds.put(PacketTypeClasses.Client.ENTITY_NBT_QUERY, ENTITY_NBT_QUERY);
+            packetIds.put(PacketTypeClasses.Client.USE_ENTITY, USE_ENTITY);
+            packetIds.put(PacketTypeClasses.Client.JIGSAW_GENERATE, JIGSAW_GENERATE);
+            packetIds.put(PacketTypeClasses.Client.KEEP_ALIVE, KEEP_ALIVE);
+            packetIds.put(PacketTypeClasses.Client.DIFFICULTY_LOCK, DIFFICULTY_LOCK);
+            packetIds.put(PacketTypeClasses.Client.POSITION, POSITION);
+            packetIds.put(PacketTypeClasses.Client.POSITION_LOOK, POSITION_LOOK);
+            packetIds.put(PacketTypeClasses.Client.LOOK, LOOK);
+            packetIds.put(PacketTypeClasses.Client.FLYING, FLYING);
+            packetIds.put(PacketTypeClasses.Client.VEHICLE_MOVE, VEHICLE_MOVE);
+            packetIds.put(PacketTypeClasses.Client.BOAT_MOVE, BOAT_MOVE);
+            packetIds.put(PacketTypeClasses.Client.PICK_ITEM, PICK_ITEM);
+            packetIds.put(PacketTypeClasses.Client.AUTO_RECIPE, AUTO_RECIPE);
+            packetIds.put(PacketTypeClasses.Client.ABILITIES, ABILITIES);
+            packetIds.put(PacketTypeClasses.Client.BLOCK_DIG, BLOCK_DIG);
+            packetIds.put(PacketTypeClasses.Client.ENTITY_ACTION, ENTITY_ACTION);
+            packetIds.put(PacketTypeClasses.Client.STEER_VEHICLE, STEER_VEHICLE);
+            packetIds.put(PacketTypeClasses.Client.RECIPE_DISPLAYED, RECIPE_DISPLAYED);
+            packetIds.put(PacketTypeClasses.Client.ITEM_NAME, ITEM_NAME);
+            packetIds.put(PacketTypeClasses.Client.RESOURCE_PACK_STATUS, RESOURCE_PACK_STATUS);
+            packetIds.put(PacketTypeClasses.Client.ADVANCEMENTS, ADVANCEMENTS);
+            packetIds.put(PacketTypeClasses.Client.TR_SEL, TR_SEL);
+            packetIds.put(PacketTypeClasses.Client.BEACON, BEACON);
+            packetIds.put(PacketTypeClasses.Client.HELD_ITEM_SLOT, HELD_ITEM_SLOT);
+            packetIds.put(PacketTypeClasses.Client.SET_COMMAND_BLOCK, SET_COMMAND_BLOCK);
+            packetIds.put(PacketTypeClasses.Client.SET_COMMAND_MINECART, SET_COMMAND_MINECART);
+            packetIds.put(PacketTypeClasses.Client.SET_CREATIVE_SLOT, SET_CREATIVE_SLOT);
+            packetIds.put(PacketTypeClasses.Client.SET_JIGSAW, SET_JIGSAW);
+            packetIds.put(PacketTypeClasses.Client.STRUCT, STRUCT);
+            packetIds.put(PacketTypeClasses.Client.UPDATE_SIGN, UPDATE_SIGN);
+            packetIds.put(PacketTypeClasses.Client.ARM_ANIMATION, ARM_ANIMATION);
+            packetIds.put(PacketTypeClasses.Client.SPECTATE, SPECTATE);
+            packetIds.put(PacketTypeClasses.Client.USE_ITEM, USE_ITEM);
+            packetIds.put(PacketTypeClasses.Client.BLOCK_PLACE, BLOCK_PLACE);
+        }
+
+        public static class Util {
+            public static boolean isInstanceOfFlying(final byte packetId) {
+                return packetId == FLYING
+                        || packetId == POSITION
+                        || packetId == POSITION_LOOK
+                        || packetId == LOOK;
+            }
+        }
+    }
+
+    public static class Server {
+        public static final Map<Class<?>, Byte> packetIds = new HashMap<Class<?>, Byte>();
+        public static byte SPAWN_ENTITY = 0, SPAWN_ENTITY_EXPERIENCE_ORB = 1, SPAWN_ENTITY_WEATHER = 2, SPAWN_ENTITY_LIVING = 3,
+                SPAWN_ENTITY_PAINTING = 4, SPAWN_ENTITY_SPAWN = 5, ANIMATION = 6, STATISTIC = 7,
+                BLOCK_BREAK = 8, BLOCK_BREAK_ANIMATION = 9, TILE_ENTITY_DATA = 10, BLOCK_ACTION = 11,
+                BLOCK_CHANGE = 12, BOSS = 13, SERVER_DIFFICULTY = 14, CHAT = 15, MULTI_BLOCK_CHANGE = 16,
+                TAB_COMPLETE = 17, COMMANDS = 18, TRANSACTION = 19, CLOSE_WINDOW = 20,
+                WINDOW_ITEMS = 21, WINDOW_DATA = 22, SET_SLOT = 23, SET_COOLDOWN = 24,
+                CUSTOM_PAYLOAD = 25, CUSTOM_SOUND_EFFECT = 26, KICK_DISCONNECT = 27, ENTITY_STATUS = 28,
+                EXPLOSION = 29, UNLOAD_CHUNK = 30, GAME_STATE_CHANGE = 31, OPEN_WINDOW_HORSE = 32,
+                KEEP_ALIVE = 33, MAP_CHUNK = 34, WORLD_EVENT = 35, WORLD_PARTICLES = 36,
+                LIGHT_UPDATE = 37, LOGIN = 38, MAP = 39, OPEN_WINDOW_MERCHANT = 40,
+                REL_ENTITY_MOVE = 41, REL_ENTITY_MOVE_LOOK = 42, ENTITY_LOOK = 43, ENTITY = 44,
+                VEHICLE_MOVE = 45, OPEN_BOOK = 46, OPEN_WINDOW = 47, OPEN_SIGN_EDITOR = 48,
+                AUTO_RECIPE = 49, ABILITIES = 50, COMBAT_EVENT = 51, PLAYER_INFO = 52,
+                LOOK_AT = 53, POSITION = 54, RECIPES = 55, ENTITY_DESTROY = 56,
+                REMOVE_ENTITY_EFFECT = 57, RESOURCE_PACK_SEND = 58, RESPAWN = 59, ENTITY_HEAD_ROTATION = 60,
+                SELECT_ADVANCEMENT_TAB = 61, WORLD_BORDER = 62, CAMERA = 63, HELD_ITEM_SLOT = 64,
+                VIEW_CENTRE = 65, VIEW_DISTANCE = 66, SCOREBOARD_DISPLAY_OBJECTIVE = 67, ENTITY_METADATA = 68,
+                ATTACH_ENTITY = 69, ENTITY_VELOCITY = 70, ENTITY_EQUIPMENT = 71, EXPERIENCE = 72,
+                UPDATE_HEALTH = 73, SCOREBOARD_OBJECTIVE = 74, MOUNT = 75, SCOREBOARD_TEAM = 76,
+                SCOREBOARD_SCORE = 77, SPAWN_POSITION = 78, UPDATE_TIME = 79, TITLE = 80,
+                ENTITY_SOUND = 81, NAMED_SOUND_EFFECT = 82, STOP_SOUND = 83, PLAYER_LIST_HEADER_FOOTER = 84,
+                NBT_QUERY = 85, COLLECT = 86, ENTITY_TELEPORT = 87, ADVANCEMENTS = 88, UPDATE_ATTRIBUTES = 89,
+                ENTITY_EFFECT = 90, RECIPE_UPDATE = 91, TAGS = 92, MAP_CHUNK_BULK = 93;
+
+        public static void init() {
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY, SPAWN_ENTITY);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY_EXPERIENCE_ORB, SPAWN_ENTITY_EXPERIENCE_ORB);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY_WEATHER, SPAWN_ENTITY_WEATHER);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY_LIVING, SPAWN_ENTITY_LIVING);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY_PAINTING, SPAWN_ENTITY_PAINTING);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY_SPAWN, SPAWN_ENTITY_SPAWN);
+            packetIds.put(PacketTypeClasses.Server.ANIMATION, ANIMATION);
+            packetIds.put(PacketTypeClasses.Server.STATISTIC, STATISTIC);
+            packetIds.put(PacketTypeClasses.Server.BLOCK_BREAK, BLOCK_BREAK);
+            packetIds.put(PacketTypeClasses.Server.BLOCK_BREAK_ANIMATION, BLOCK_BREAK_ANIMATION);
+            packetIds.put(PacketTypeClasses.Server.TILE_ENTITY_DATA, TILE_ENTITY_DATA);
+            packetIds.put(PacketTypeClasses.Server.BLOCK_ACTION, BLOCK_ACTION);
+            packetIds.put(PacketTypeClasses.Server.BLOCK_CHANGE, BLOCK_CHANGE);
+            packetIds.put(PacketTypeClasses.Server.BOSS, BOSS);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_ENTITY, SPAWN_ENTITY);
+            packetIds.put(PacketTypeClasses.Server.SERVER_DIFFICULTY, SERVER_DIFFICULTY);
+            packetIds.put(PacketTypeClasses.Server.CHAT, CHAT);
+            packetIds.put(PacketTypeClasses.Server.MULTI_BLOCK_CHANGE, MULTI_BLOCK_CHANGE);
+            packetIds.put(PacketTypeClasses.Server.TAB_COMPLETE, TAB_COMPLETE);
+            packetIds.put(PacketTypeClasses.Server.COMMANDS, COMMANDS);
+            packetIds.put(PacketTypeClasses.Server.TRANSACTION, TRANSACTION);
+            packetIds.put(PacketTypeClasses.Server.CLOSE_WINDOW, CLOSE_WINDOW);
+            packetIds.put(PacketTypeClasses.Server.WINDOW_ITEMS, WINDOW_ITEMS);
+            packetIds.put(PacketTypeClasses.Server.WINDOW_DATA, WINDOW_DATA);
+            packetIds.put(PacketTypeClasses.Server.SET_SLOT, SET_SLOT);
+            packetIds.put(PacketTypeClasses.Server.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
+            packetIds.put(PacketTypeClasses.Server.CUSTOM_SOUND_EFFECT, CUSTOM_SOUND_EFFECT);
+            packetIds.put(PacketTypeClasses.Server.KICK_DISCONNECT, KICK_DISCONNECT);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_STATUS, ENTITY_STATUS);
+            packetIds.put(PacketTypeClasses.Server.EXPLOSION, EXPLOSION);
+            packetIds.put(PacketTypeClasses.Server.UNLOAD_CHUNK, UNLOAD_CHUNK);
+            packetIds.put(PacketTypeClasses.Server.GAME_STATE_CHANGE, GAME_STATE_CHANGE);
+            packetIds.put(PacketTypeClasses.Server.OPEN_WINDOW_HORSE, OPEN_WINDOW_HORSE);
+            packetIds.put(PacketTypeClasses.Server.KEEP_ALIVE, KEEP_ALIVE);
+            packetIds.put(PacketTypeClasses.Server.MAP_CHUNK, MAP_CHUNK);
+            packetIds.put(PacketTypeClasses.Server.WORLD_EVENT, SPAWN_ENTITY);
+            packetIds.put(PacketTypeClasses.Server.WORLD_PARTICLES, WORLD_PARTICLES);
+            packetIds.put(PacketTypeClasses.Server.LIGHT_UPDATE, LIGHT_UPDATE);
+            packetIds.put(PacketTypeClasses.Server.LOGIN, LOGIN);
+            packetIds.put(PacketTypeClasses.Server.MAP, MAP);
+            packetIds.put(PacketTypeClasses.Server.OPEN_WINDOW_MERCHANT, OPEN_WINDOW_MERCHANT);
+            packetIds.put(PacketTypeClasses.Server.REL_ENTITY_MOVE, REL_ENTITY_MOVE);
+            packetIds.put(PacketTypeClasses.Server.REL_ENTITY_MOVE_LOOK, REL_ENTITY_MOVE_LOOK);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_LOOK, ENTITY_LOOK);
+            packetIds.put(PacketTypeClasses.Server.ENTITY, ENTITY);
+            packetIds.put(PacketTypeClasses.Server.VEHICLE_MOVE, VEHICLE_MOVE);
+            packetIds.put(PacketTypeClasses.Server.OPEN_BOOK, OPEN_BOOK);
+            packetIds.put(PacketTypeClasses.Server.OPEN_WINDOW, OPEN_WINDOW);
+            packetIds.put(PacketTypeClasses.Server.OPEN_SIGN_EDITOR, OPEN_SIGN_EDITOR);
+            packetIds.put(PacketTypeClasses.Server.AUTO_RECIPE, AUTO_RECIPE);
+            packetIds.put(PacketTypeClasses.Server.ABILITIES, ABILITIES);
+            packetIds.put(PacketTypeClasses.Server.COMBAT_EVENT, COMBAT_EVENT);
+            packetIds.put(PacketTypeClasses.Server.PLAYER_INFO, PLAYER_INFO);
+            packetIds.put(PacketTypeClasses.Server.LOOK_AT, LOOK_AT);
+            packetIds.put(PacketTypeClasses.Server.POSITION, POSITION);
+            packetIds.put(PacketTypeClasses.Server.RECIPES, RECIPES);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_DESTROY, ENTITY_DESTROY);
+            packetIds.put(PacketTypeClasses.Server.REMOVE_ENTITY_EFFECT, REMOVE_ENTITY_EFFECT);
+            packetIds.put(PacketTypeClasses.Server.RESOURCE_PACK_SEND, RESOURCE_PACK_SEND);
+            packetIds.put(PacketTypeClasses.Server.RESPAWN, RESPAWN);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_HEAD_ROTATION, ENTITY_HEAD_ROTATION);
+            packetIds.put(PacketTypeClasses.Server.SELECT_ADVANCEMENT_TAB, SELECT_ADVANCEMENT_TAB);
+            packetIds.put(PacketTypeClasses.Server.WORLD_BORDER, WORLD_BORDER);
+            packetIds.put(PacketTypeClasses.Server.CAMERA, CAMERA);
+            packetIds.put(PacketTypeClasses.Server.HELD_ITEM_SLOT, HELD_ITEM_SLOT);
+            packetIds.put(PacketTypeClasses.Server.VIEW_CENTRE, VIEW_CENTRE);
+            packetIds.put(PacketTypeClasses.Server.VIEW_DISTANCE, VIEW_DISTANCE);
+            packetIds.put(PacketTypeClasses.Server.SCOREBOARD_DISPLAY_OBJECTIVE, SCOREBOARD_DISPLAY_OBJECTIVE);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_METADATA, ENTITY_METADATA);
+            packetIds.put(PacketTypeClasses.Server.ATTACH_ENTITY, ATTACH_ENTITY);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_VELOCITY, ENTITY_VELOCITY);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_EQUIPMENT, ENTITY_EQUIPMENT);
+            packetIds.put(PacketTypeClasses.Server.EXPERIENCE, EXPERIENCE);
+            packetIds.put(PacketTypeClasses.Server.UPDATE_HEALTH, UPDATE_HEALTH);
+            packetIds.put(PacketTypeClasses.Server.SCOREBOARD_OBJECTIVE, SCOREBOARD_OBJECTIVE);
+            packetIds.put(PacketTypeClasses.Server.MOUNT, MOUNT);
+            packetIds.put(PacketTypeClasses.Server.SCOREBOARD_TEAM, SCOREBOARD_TEAM);
+            packetIds.put(PacketTypeClasses.Server.SCOREBOARD_SCORE, SCOREBOARD_SCORE);
+            packetIds.put(PacketTypeClasses.Server.SPAWN_POSITION, SPAWN_POSITION);
+            packetIds.put(PacketTypeClasses.Server.UPDATE_TIME, UPDATE_TIME);
+            packetIds.put(PacketTypeClasses.Server.TITLE, TITLE);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_SOUND, ENTITY_SOUND);
+            packetIds.put(PacketTypeClasses.Server.NAMED_SOUND_EFFECT, NAMED_SOUND_EFFECT);
+            packetIds.put(PacketTypeClasses.Server.STOP_SOUND, STOP_SOUND);
+            packetIds.put(PacketTypeClasses.Server.PLAYER_LIST_HEADER_FOOTER, PLAYER_LIST_HEADER_FOOTER);
+            packetIds.put(PacketTypeClasses.Server.NBT_QUERY, NBT_QUERY);
+            packetIds.put(PacketTypeClasses.Server.COLLECT, COLLECT);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_TELEPORT, ENTITY_TELEPORT);
+            packetIds.put(PacketTypeClasses.Server.ADVANCEMENTS, ADVANCEMENTS);
+            packetIds.put(PacketTypeClasses.Server.UPDATE_ATTRIBUTES, UPDATE_ATTRIBUTES);
+            packetIds.put(PacketTypeClasses.Server.ENTITY_EFFECT, ENTITY_EFFECT);
+            packetIds.put(PacketTypeClasses.Server.RECIPE_UPDATE, RECIPE_UPDATE);
+            packetIds.put(PacketTypeClasses.Server.TAGS, TAGS);
+            packetIds.put(PacketTypeClasses.Server.MAP_CHUNK_BULK, MAP_CHUNK_BULK);
+        }
+
+        public static class Util {
+            public static boolean isInstanceOfEntity(final byte packetId) {
+                return packetId == ENTITY || packetId == REL_ENTITY_MOVE ||
+                        packetId == REL_ENTITY_MOVE_LOOK || packetId == ENTITY_LOOK;
+            }
+        }
+    }
+
+
+}

src/main/java/io/github/retrooper/packetevents/packet/PacketTypeClasses.java

@@ -0,0 +1,237 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packet;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+public class PacketTypeClasses {
+    public static class Client {
+        private static final String c = "PacketPlayIn";
+        @Nullable
+        public static Class<?> FLYING;
+
+        public static Class<?> POSITION, POSITION_LOOK, LOOK, CLIENT_COMMAND,
+                TRANSACTION, BLOCK_DIG, ENTITY_ACTION, USE_ENTITY,
+                WINDOW_CLICK, STEER_VEHICLE, CUSTOM_PAYLOAD, ARM_ANIMATION,
+                BLOCK_PLACE, USE_ITEM, ABILITIES, HELD_ITEM_SLOT,
+                CLOSE_WINDOW, TAB_COMPLETE, CHAT, SET_CREATIVE_SLOT,
+                KEEP_ALIVE, SETTINGS, ENCHANT_ITEM, TELEPORT_ACCEPT,
+                TILE_NBT_QUERY, DIFFICULTY_CHANGE, B_EDIT, ENTITY_NBT_QUERY,
+                JIGSAW_GENERATE, DIFFICULTY_LOCK, VEHICLE_MOVE, BOAT_MOVE, PICK_ITEM,
+                AUTO_RECIPE, RECIPE_DISPLAYED, ITEM_NAME, RESOURCE_PACK_STATUS,
+                ADVANCEMENTS, TR_SEL, BEACON, SET_COMMAND_BLOCK,
+                SET_COMMAND_MINECART, SET_JIGSAW, STRUCT, UPDATE_SIGN, SPECTATE;
+
+        public static void load() {
+            FLYING = NMSUtils.getNMSClassWithoutException(c + "Flying");
+            try {
+                POSITION = NMSUtils.getNMSClass(c + "Position");
+                POSITION_LOOK = NMSUtils.getNMSClass(c + "PositionLook");
+                LOOK = NMSUtils.getNMSClass(c + "Look");
+            } catch (ClassNotFoundException e) {
+                POSITION = Reflection.getSubClass(FLYING, c + "Position");
+                POSITION_LOOK = Reflection.getSubClass(FLYING, c + "PositionLook");
+                LOOK = Reflection.getSubClass(FLYING, c + "Look");
+            }
+
+            try {
+                SETTINGS = NMSUtils.getNMSClass(c + "Settings");
+                ENCHANT_ITEM = NMSUtils.getNMSClass(c + "EnchantItem");
+
+                CLIENT_COMMAND = NMSUtils.getNMSClass(c + "ClientCommand");
+                TRANSACTION = NMSUtils.getNMSClass(c + "Transaction");
+                BLOCK_DIG = NMSUtils.getNMSClass(c + "BlockDig");
+                ENTITY_ACTION = NMSUtils.getNMSClass(c + "EntityAction");
+                USE_ENTITY = NMSUtils.getNMSClass(c + "UseEntity");
+                WINDOW_CLICK = NMSUtils.getNMSClass(c + "WindowClick");
+                STEER_VEHICLE = NMSUtils.getNMSClass(c + "SteerVehicle");
+                CUSTOM_PAYLOAD = NMSUtils.getNMSClass(c + "CustomPayload");
+                ARM_ANIMATION = NMSUtils.getNMSClass(c + "ArmAnimation");
+                ABILITIES = NMSUtils.getNMSClass(c + "Abilities");
+                HELD_ITEM_SLOT = NMSUtils.getNMSClass(c + "HeldItemSlot");
+                CLOSE_WINDOW = NMSUtils.getNMSClass(c + "CloseWindow");
+                TAB_COMPLETE = NMSUtils.getNMSClass(c + "TabComplete");
+                CHAT = NMSUtils.getNMSClass(c + "Chat");
+                SET_CREATIVE_SLOT = NMSUtils.getNMSClass(c + "SetCreativeSlot");
+                KEEP_ALIVE = NMSUtils.getNMSClass(c + "KeepAlive");
+                UPDATE_SIGN = NMSUtils.getNMSClassWithoutException(c + "UpdateSign");
+
+                TELEPORT_ACCEPT = NMSUtils.getNMSClassWithoutException(c + "TeleportAccept");
+                TILE_NBT_QUERY = NMSUtils.getNMSClassWithoutException(c + "TileNBTQuery");
+                DIFFICULTY_CHANGE = NMSUtils.getNMSClassWithoutException(c + "DifficultyChange");
+                B_EDIT = NMSUtils.getNMSClassWithoutException(c + "BEdit");
+                ENTITY_NBT_QUERY = NMSUtils.getNMSClassWithoutException(c + "EntityNBTQuery");
+                JIGSAW_GENERATE = NMSUtils.getNMSClassWithoutException(c + "JigsawGenerate");
+                DIFFICULTY_LOCK = NMSUtils.getNMSClassWithoutException(c + "DifficultyLock");
+                VEHICLE_MOVE = NMSUtils.getNMSClassWithoutException(c + "VehicleMove");
+                BOAT_MOVE = NMSUtils.getNMSClassWithoutException(c + "BoatMove");
+                PICK_ITEM = NMSUtils.getNMSClassWithoutException(c + "PickItem");
+                AUTO_RECIPE = NMSUtils.getNMSClassWithoutException(c + "AutoRecipe");
+                RECIPE_DISPLAYED = NMSUtils.getNMSClassWithoutException(c + "RecipeDisplayed");
+                ITEM_NAME = NMSUtils.getNMSClassWithoutException(c + "ItemName");
+                //1.8+
+                RESOURCE_PACK_STATUS = NMSUtils.getNMSClassWithoutException(c + "ResourcePackStatus");
+
+                ADVANCEMENTS = NMSUtils.getNMSClassWithoutException(c + "Advancements");
+                TR_SEL = NMSUtils.getNMSClassWithoutException(c + "TrSel");
+                BEACON = NMSUtils.getNMSClassWithoutException(c + "Beacon");
+                SET_COMMAND_BLOCK = NMSUtils.getNMSClassWithoutException(c + "SetCommandBlock");
+                SET_COMMAND_MINECART = NMSUtils.getNMSClassWithoutException(c + "SetCommandMinecart");
+                SET_JIGSAW = NMSUtils.getNMSClassWithoutException(c + "SetJigsaw");
+                STRUCT = NMSUtils.getNMSClassWithoutException(c + "Struct");
+                SPECTATE = NMSUtils.getNMSClassWithoutException(c + "Spectate");
+            } catch (ClassNotFoundException e) {
+                e.printStackTrace();
+            }
+            //Block place
+            try {
+                BLOCK_PLACE = NMSUtils.getNMSClass(c + "BlockPlace");
+            } catch (ClassNotFoundException e) {
+                //They are just on a newer version
+                try {
+                    USE_ITEM = NMSUtils.getNMSClass(c + "UseItem");
+                } catch (ClassNotFoundException e2) {
+                    e.printStackTrace();
+                    e2.printStackTrace();
+                }
+            }
+
+            PacketType.Client.init();
+        }
+    }
+
+    public static class Server {
+        private static final String s = "PacketPlayOut";
+        public static Class<?> SPAWN_ENTITY, SPAWN_ENTITY_EXPERIENCE_ORB, SPAWN_ENTITY_WEATHER, SPAWN_ENTITY_LIVING,
+                SPAWN_ENTITY_PAINTING, SPAWN_ENTITY_SPAWN, ANIMATION, STATISTIC,
+                BLOCK_BREAK, BLOCK_BREAK_ANIMATION, TILE_ENTITY_DATA, BLOCK_ACTION,
+                BLOCK_CHANGE, BOSS, SERVER_DIFFICULTY, CHAT, MULTI_BLOCK_CHANGE,
+                TAB_COMPLETE, COMMANDS, TRANSACTION, CLOSE_WINDOW,
+                WINDOW_ITEMS, WINDOW_DATA, SET_SLOT, SET_COOLDOWN,
+                CUSTOM_PAYLOAD, CUSTOM_SOUND_EFFECT, KICK_DISCONNECT, ENTITY_STATUS,
+                EXPLOSION, UNLOAD_CHUNK, GAME_STATE_CHANGE, OPEN_WINDOW_HORSE,
+                KEEP_ALIVE, MAP_CHUNK, WORLD_EVENT, WORLD_PARTICLES,
+                LIGHT_UPDATE, LOGIN, MAP, OPEN_WINDOW_MERCHANT,
+                REL_ENTITY_MOVE, REL_ENTITY_MOVE_LOOK, ENTITY_LOOK, ENTITY,
+                VEHICLE_MOVE, OPEN_BOOK, OPEN_WINDOW, OPEN_SIGN_EDITOR,
+                AUTO_RECIPE, ABILITIES, COMBAT_EVENT, PLAYER_INFO,
+                LOOK_AT, POSITION, RECIPES, ENTITY_DESTROY,
+                REMOVE_ENTITY_EFFECT, RESOURCE_PACK_SEND, RESPAWN, ENTITY_HEAD_ROTATION,
+                SELECT_ADVANCEMENT_TAB, WORLD_BORDER, CAMERA, HELD_ITEM_SLOT,
+                VIEW_CENTRE, VIEW_DISTANCE, SCOREBOARD_DISPLAY_OBJECTIVE, ENTITY_METADATA,
+                ATTACH_ENTITY, ENTITY_VELOCITY, ENTITY_EQUIPMENT, EXPERIENCE,
+                UPDATE_HEALTH, SCOREBOARD_OBJECTIVE, MOUNT, SCOREBOARD_TEAM,
+                SCOREBOARD_SCORE, SPAWN_POSITION, UPDATE_TIME, TITLE,
+                ENTITY_SOUND, NAMED_SOUND_EFFECT, STOP_SOUND, PLAYER_LIST_HEADER_FOOTER,
+                NBT_QUERY, COLLECT, ENTITY_TELEPORT, ADVANCEMENTS, UPDATE_ATTRIBUTES,
+                ENTITY_EFFECT, RECIPE_UPDATE, TAGS, MAP_CHUNK_BULK;
+
+        public static void load() {
+            SPAWN_ENTITY = NMSUtils.getNMSClassWithoutException(s + "SpawnEntity");
+            SPAWN_ENTITY_EXPERIENCE_ORB = NMSUtils.getNMSClassWithoutException(s + "SpawnEntityExperienceOrb");
+            SPAWN_ENTITY_WEATHER = NMSUtils.getNMSClassWithoutException(s + "SpawnEntityWeather");
+            SPAWN_ENTITY_LIVING = NMSUtils.getNMSClassWithoutException(s + "SpawnEntityLiving");
+            SPAWN_ENTITY_PAINTING = NMSUtils.getNMSClassWithoutException(s + "SpawnEntityPainting");
+            SPAWN_ENTITY_SPAWN = NMSUtils.getNMSClassWithoutException(s + "SpawnEntitySpawn");
+            ANIMATION = NMSUtils.getNMSClassWithoutException(s + "Animation");
+            STATISTIC = NMSUtils.getNMSClassWithoutException(s + "Statistic");
+            BLOCK_BREAK = NMSUtils.getNMSClassWithoutException(s + "BlockBreak");
+            BLOCK_BREAK_ANIMATION = NMSUtils.getNMSClassWithoutException(s + "BlockBreakAnimation");
+            TILE_ENTITY_DATA = NMSUtils.getNMSClassWithoutException(s + "TileEntityData");
+            BLOCK_ACTION = NMSUtils.getNMSClassWithoutException(s + "BlockAction");
+            BLOCK_CHANGE = NMSUtils.getNMSClassWithoutException(s + "BlockChange");
+            BOSS = NMSUtils.getNMSClassWithoutException(s + "Boss");
+            SERVER_DIFFICULTY = NMSUtils.getNMSClassWithoutException(s + "ServerDifficulty");
+            CHAT = NMSUtils.getNMSClassWithoutException(s + "Chat");
+            MULTI_BLOCK_CHANGE = NMSUtils.getNMSClassWithoutException(s + "MultiBlockChange");
+            TAB_COMPLETE = NMSUtils.getNMSClassWithoutException(s + "TabComplete");
+            COMMANDS = NMSUtils.getNMSClassWithoutException(s + "Commands");
+            TRANSACTION = NMSUtils.getNMSClassWithoutException(s + "Transaction");
+            CLOSE_WINDOW = NMSUtils.getNMSClassWithoutException(s + "CloseWindow");
+            WINDOW_ITEMS = NMSUtils.getNMSClassWithoutException(s + "WindowItems");
+            WINDOW_DATA = NMSUtils.getNMSClassWithoutException(s + "WindowData");
+            SET_SLOT = NMSUtils.getNMSClassWithoutException(s + "SetSlot");
+            SET_COOLDOWN = NMSUtils.getNMSClassWithoutException(s + "SetCooldown");
+            CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException(s + "CustomPayload");
+            CUSTOM_SOUND_EFFECT = NMSUtils.getNMSClassWithoutException(s + "CustomSoundEffect");
+            KICK_DISCONNECT = NMSUtils.getNMSClassWithoutException(s + "KickDisconnect");
+            ENTITY_STATUS = NMSUtils.getNMSClassWithoutException(s + "EntityStatus");
+            EXPLOSION = NMSUtils.getNMSClassWithoutException(s + "Explosion");
+            UNLOAD_CHUNK = NMSUtils.getNMSClassWithoutException(s + "UnloadChunk");
+            GAME_STATE_CHANGE = NMSUtils.getNMSClassWithoutException(s + "GameStateChange");
+            OPEN_WINDOW_HORSE = NMSUtils.getNMSClassWithoutException(s + "OpenWindowHorse");
+            KEEP_ALIVE = NMSUtils.getNMSClassWithoutException(s + "KeepAlive");
+            MAP_CHUNK = NMSUtils.getNMSClassWithoutException(s + "MapChunk");
+            WORLD_EVENT = NMSUtils.getNMSClassWithoutException(s + "WorldEvent");
+            WORLD_PARTICLES = NMSUtils.getNMSClassWithoutException(s + "WorldParticles");
+            LIGHT_UPDATE = NMSUtils.getNMSClassWithoutException(s + "LightUpdate");
+            LOGIN = NMSUtils.getNMSClassWithoutException(s + "Login");
+            MAP = NMSUtils.getNMSClassWithoutException(s + "Map");
+            OPEN_WINDOW_MERCHANT = NMSUtils.getNMSClassWithoutException(s + "OpenWindowMerchant");
+            ENTITY = NMSUtils.getNMSClassWithoutException(s + "Entity");
+            REL_ENTITY_MOVE = Reflection.getSubClass(ENTITY, s + "RelEntityMove");
+            REL_ENTITY_MOVE_LOOK = Reflection.getSubClass(ENTITY, s + "RelEntityMoveLook");
+            ENTITY_LOOK = Reflection.getSubClass(ENTITY, s + "EntityLook");
+            if (REL_ENTITY_MOVE == null) {
+                //is not a subclass and should be accessed normally
+                REL_ENTITY_MOVE = NMSUtils.getNMSClassWithoutException(s + "RelEntityMove");
+                REL_ENTITY_MOVE_LOOK = NMSUtils.getNMSClassWithoutException(s + "RelEntityMoveLook");
+                ENTITY_LOOK = NMSUtils.getNMSClassWithoutException(s + "RelEntityLook");
+            }
+            VEHICLE_MOVE = NMSUtils.getNMSClassWithoutException(s + "VehicleMove");
+            OPEN_BOOK = NMSUtils.getNMSClassWithoutException(s + "OpenBook");
+            OPEN_WINDOW = NMSUtils.getNMSClassWithoutException(s + "OpenWindow");
+            OPEN_SIGN_EDITOR = NMSUtils.getNMSClassWithoutException(s + "OpenSignEditor");
+            AUTO_RECIPE = NMSUtils.getNMSClassWithoutException(s + "AutoRecipe");
+            ABILITIES = NMSUtils.getNMSClassWithoutException(s + "Abilities");
+            COMBAT_EVENT = NMSUtils.getNMSClassWithoutException(s + "CombatEvent");
+            PLAYER_INFO = NMSUtils.getNMSClassWithoutException(s + "PlayerInfo");
+            LOOK_AT = NMSUtils.getNMSClassWithoutException(s + "LookAt");
+            POSITION = NMSUtils.getNMSClassWithoutException(s + "Position");
+            RECIPES = NMSUtils.getNMSClassWithoutException(s + "Recipes");
+            ENTITY_DESTROY = NMSUtils.getNMSClassWithoutException(s + "EntityDestroy");
+            REMOVE_ENTITY_EFFECT = NMSUtils.getNMSClassWithoutException(s + "RemoveEntityEffect");
+            RESOURCE_PACK_SEND = NMSUtils.getNMSClassWithoutException(s + "ResourcePackSend");
+            RESPAWN = NMSUtils.getNMSClassWithoutException(s + "Respawn");
+            ENTITY_HEAD_ROTATION = NMSUtils.getNMSClassWithoutException(s + "EntityHeadRotation");
+            SELECT_ADVANCEMENT_TAB = NMSUtils.getNMSClassWithoutException(s + "SelectAdvancementTab");
+            WORLD_BORDER = NMSUtils.getNMSClassWithoutException(s + "WorldBorder");
+            CAMERA = NMSUtils.getNMSClassWithoutException(s + "Camera");
+            HELD_ITEM_SLOT = NMSUtils.getNMSClassWithoutException(s + "HeldItemSlot");
+            VIEW_CENTRE = NMSUtils.getNMSClassWithoutException(s + "ViewCentre");
+            VIEW_DISTANCE = NMSUtils.getNMSClassWithoutException(s + "ViewDistance");
+            SCOREBOARD_DISPLAY_OBJECTIVE = NMSUtils.getNMSClassWithoutException(s + "ScoreboardDisplayObjective");
+            ENTITY_METADATA = NMSUtils.getNMSClassWithoutException(s + "EntityMetadata");
+            ATTACH_ENTITY = NMSUtils.getNMSClassWithoutException(s + "AttachEntity");
+            ENTITY_VELOCITY = NMSUtils.getNMSClassWithoutException(s + "EntityVelocity");
+            ENTITY_EQUIPMENT = NMSUtils.getNMSClassWithoutException(s + "EntityEquipment");
+            EXPERIENCE = NMSUtils.getNMSClassWithoutException(s + "Experience");
+            UPDATE_HEALTH = NMSUtils.getNMSClassWithoutException(s + "UpdateHealth");
+            SCOREBOARD_OBJECTIVE = NMSUtils.getNMSClassWithoutException(s + "ScoreboardObjective");
+            MOUNT = NMSUtils.getNMSClassWithoutException(s + "Mount");
+            SCOREBOARD_TEAM = NMSUtils.getNMSClassWithoutException(s + "ScoreboardTeam");
+            SCOREBOARD_SCORE = NMSUtils.getNMSClassWithoutException(s + "ScoreboardScore");
+            SPAWN_POSITION = NMSUtils.getNMSClassWithoutException(s + "SpawnPosition");
+            UPDATE_TIME = NMSUtils.getNMSClassWithoutException(s + "UpdateTime");
+            TITLE = NMSUtils.getNMSClassWithoutException(s + "Title");
+            ENTITY_SOUND = NMSUtils.getNMSClassWithoutException(s + "EntitySound");
+            NAMED_SOUND_EFFECT = NMSUtils.getNMSClassWithoutException(s + "NamedSoundEffect");
+            STOP_SOUND = NMSUtils.getNMSClassWithoutException(s + "StopSound");
+            PLAYER_LIST_HEADER_FOOTER = NMSUtils.getNMSClassWithoutException(s + "PlayerListHeaderFooter");
+            NBT_QUERY = NMSUtils.getNMSClassWithoutException(s + "NBTQuery");
+            COLLECT = NMSUtils.getNMSClassWithoutException(s + "Collect");
+            ENTITY_TELEPORT = NMSUtils.getNMSClassWithoutException(s + "EntityTeleport");
+            ADVANCEMENTS = NMSUtils.getNMSClassWithoutException(s + "Advancements");
+            UPDATE_ATTRIBUTES = NMSUtils.getNMSClassWithoutException(s + "UpdateAttributes");
+            ENTITY_EFFECT = NMSUtils.getNMSClassWithoutException(s + "EntityEffect");
+            RECIPE_UPDATE = NMSUtils.getNMSClassWithoutException(s + "RecipeUpdate");
+            TAGS = NMSUtils.getNMSClassWithoutException(s + "Tags");
+            MAP_CHUNK_BULK = NMSUtils.getNMSClassWithoutException(s + "MapChunkBulk");
+            PacketType.Server.init();
+        }
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/Sendable.java

@@ -0,0 +1,8 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers;
+
+public interface Sendable {
+    Object asNMSPacket();
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/api/WrappedPacket.java

@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.api;
+
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packetwrappers.in.abilities.WrappedPacketInAbilities;
+import io.github.retrooper.packetevents.packetwrappers.in.armanimation.WrappedPacketInArmAnimation;
+import io.github.retrooper.packetevents.packetwrappers.in.blockdig.WrappedPacketInBlockDig;
+import io.github.retrooper.packetevents.packetwrappers.in.blockplace.WrappedPacketInBlockPlace;
+import io.github.retrooper.packetevents.packetwrappers.in.chat.WrappedPacketInChat;
+import io.github.retrooper.packetevents.packetwrappers.in.clientcommand.WrappedPacketInClientCommand;
+import io.github.retrooper.packetevents.packetwrappers.in.custompayload.WrappedPacketInCustomPayload;
+import io.github.retrooper.packetevents.packetwrappers.in.entityaction.WrappedPacketInEntityAction;
+import io.github.retrooper.packetevents.packetwrappers.in.flying.WrappedPacketInFlying;
+import io.github.retrooper.packetevents.packetwrappers.in.helditemslot.WrappedPacketInHeldItemSlot;
+import io.github.retrooper.packetevents.packetwrappers.in.keepalive.WrappedPacketInKeepAlive;
+import io.github.retrooper.packetevents.packetwrappers.in.settings.WrappedPacketInSettings;
+import io.github.retrooper.packetevents.packetwrappers.in.steervehicle.WrappedPacketInSteerVehicle;
+import io.github.retrooper.packetevents.packetwrappers.in.transaction.WrappedPacketInTransaction;
+import io.github.retrooper.packetevents.packetwrappers.in.useentity.WrappedPacketInUseEntity;
+import io.github.retrooper.packetevents.packetwrappers.in.windowclick.WrappedPacketInWindowClick;
+import io.github.retrooper.packetevents.packetwrappers.out.abilities.WrappedPacketOutAbilities;
+import io.github.retrooper.packetevents.packetwrappers.out.animation.WrappedPacketOutAnimation;
+import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
+import io.github.retrooper.packetevents.packetwrappers.out.entity.WrappedPacketOutEntity;
+import io.github.retrooper.packetevents.packetwrappers.out.entityvelocity.WrappedPacketOutEntityVelocity;
+import io.github.retrooper.packetevents.packetwrappers.out.keepalive.WrappedPacketOutKeepAlive;
+import io.github.retrooper.packetevents.packetwrappers.out.kickdisconnect.WrappedPacketOutKickDisconnect;
+import io.github.retrooper.packetevents.packetwrappers.out.position.WrappedPacketOutPosition;
+import io.github.retrooper.packetevents.packetwrappers.out.transaction.WrappedPacketOutTransaction;
+import io.github.retrooper.packetevents.packetwrappers.out.updatehealth.WrappedPacketOutUpdateHealth;
+import org.bukkit.entity.Player;
+
+public class WrappedPacket {
+    public static ServerVersion version = null;
+    protected final Player player;
+    protected Object packet;
+
+    public WrappedPacket() {
+        this.player = null;
+        this.packet = null;
+    }
+
+    public WrappedPacket(final Object packet) {
+        this.player = null;
+        if (packet == null) return;
+        this.packet = packet;
+        try {
+            setup();
+        } catch (final Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public WrappedPacket(final Player player, final Object packet) {
+        this.player = player;
+        if (packet == null) return;
+        this.packet = packet;
+        try {
+            setup();
+        } catch (final Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void loadAllWrappers() {
+        //SERVER BOUND
+        WrappedPacketInAbilities.load();
+        WrappedPacketInArmAnimation.load();
+        WrappedPacketInBlockDig.load();
+        WrappedPacketInBlockPlace.load();
+        WrappedPacketInChat.load();
+        WrappedPacketInClientCommand.load();
+        WrappedPacketInCustomPayload.load();
+        WrappedPacketInEntityAction.load();
+        WrappedPacketInFlying.load();
+        WrappedPacketInHeldItemSlot.load();
+        WrappedPacketInKeepAlive.load();
+        WrappedPacketInSettings.load();
+        WrappedPacketInSteerVehicle.load();
+        WrappedPacketInTransaction.load();
+        WrappedPacketInUseEntity.load();
+        WrappedPacketInWindowClick.load();
+
+        //CLIENTBOUND
+        WrappedPacketOutAbilities.load();
+        WrappedPacketOutAnimation.load();
+        WrappedPacketOutChat.load();
+        WrappedPacketOutEntity.load();
+        WrappedPacketOutEntityVelocity.load();
+        WrappedPacketOutKeepAlive.load();
+        WrappedPacketOutKickDisconnect.load();
+        WrappedPacketOutPosition.load();
+        WrappedPacketOutTransaction.load();
+        WrappedPacketOutUpdateHealth.load();
+    }
+
+    protected void setup() {
+
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/abilities/WrappedPacketInAbilities.java

@@ -0,0 +1,105 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.abilities;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public final class WrappedPacketInAbilities extends WrappedPacket {
+    private static Class<?> abilitiesClass;
+    private static boolean isMoreThanOneBoolPresent;
+    private boolean isVulnerable;
+    private boolean isFlying;
+    private boolean allowFly;
+    private boolean instantBuild;
+    private float flySpeed;
+    private float walkSpeed;
+    public WrappedPacketInAbilities(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        abilitiesClass = PacketTypeClasses.Client.ABILITIES;
+        isMoreThanOneBoolPresent = Reflection.getField(abilitiesClass, boolean.class, 1) != null;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            if (isMoreThanOneBoolPresent) {
+                this.isVulnerable = Reflection.getField(abilitiesClass, boolean.class, 0).getBoolean(packet);
+                this.isFlying = Reflection.getField(abilitiesClass, boolean.class, 1).getBoolean(packet);
+                this.allowFly = Reflection.getField(abilitiesClass, boolean.class, 2).getBoolean(packet);
+                this.instantBuild = Reflection.getField(abilitiesClass, boolean.class, 3).getBoolean(packet);
+                this.flySpeed = Reflection.getField(abilitiesClass, float.class, 0).getFloat(packet);
+                this.walkSpeed = Reflection.getField(abilitiesClass, float.class, 1).getFloat(packet);
+            } else {
+                this.isFlying = Reflection.getField(abilitiesClass, boolean.class, 0).getBoolean(packet);
+            }
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return Whether the player is vulnerable to damage or not.
+     */
+    @Deprecated
+    @Nullable
+    public Boolean isVulnerable() {
+        return isVulnerable;
+    }
+
+    public boolean isFlying() {
+        return isFlying;
+    }
+
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return Whether or not the player can fly.
+     */
+    @Deprecated
+    @Nullable
+    public Boolean isFlightAllowed() {
+        return allowFly;
+    }
+
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return Whether or not the player can break blocks instantly.
+     */
+    @Deprecated
+    @Nullable
+    public Boolean canInstantlyBuild() {
+        return instantBuild;
+    }
+
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return The speed at which the player can fly, as a float.
+     */
+    @Deprecated
+    @Nullable
+    public Float getFlySpeed() {
+        return flySpeed;
+    }
+
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return The speed at which the player can walk, as a float.
+     */
+    @Deprecated
+    @Nullable
+    public Float getWalkSpeed() {
+        return walkSpeed;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/armanimation/WrappedPacketInArmAnimation.java

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.armanimation;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+
+@Deprecated
+public final class WrappedPacketInArmAnimation extends WrappedPacket {
+    private static Class<?> packetClass;
+
+    public WrappedPacketInArmAnimation(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.ARM_ANIMATION;
+    }
+
+    @Override
+    public void setup() {
+
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/blockdig/WrappedPacketInBlockDig.java

@@ -0,0 +1,119 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.blockdig;
+
+import io.github.retrooper.packetevents.enums.Direction;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
+
+public final class WrappedPacketInBlockDig extends WrappedPacket {
+    private static Class<?> blockDigClass, blockPositionClass, enumDirectionClass, digTypeClass;
+    private static boolean isVersionLowerThan_v_1_8;
+    private Vector3i blockPosition;
+    private Direction direction;
+    private PlayerDigType digType;
+    public WrappedPacketInBlockDig(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        blockDigClass = PacketTypeClasses.Client.BLOCK_DIG;
+        try {
+            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
+                blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
+                enumDirectionClass = NMSUtils.getNMSClass("EnumDirection");
+            }
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+        isVersionLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
+
+        if (version != ServerVersion.v_1_7_10) {
+            try {
+                digTypeClass = NMSUtils.getNMSClass("EnumPlayerDigType");
+            } catch (ClassNotFoundException e) {
+                //It is probably a subclass
+                digTypeClass = Reflection.getSubClass(blockDigClass, "EnumPlayerDigType");
+            }
+        }
+    }
+
+    @Override
+    protected void setup() {
+        Direction enumDirection = null;
+        PlayerDigType enumDigType = null;
+        int x = 0, y = 0, z = 0;
+        //1.7.10
+        try {
+            if (isVersionLowerThan_v_1_8) {
+                enumDigType = PlayerDigType.values()[(Reflection.getField(blockDigClass, int.class, 4).getInt(packet))];
+                x = Reflection.getField(blockDigClass, int.class, 0).getInt(packet);
+                y = Reflection.getField(blockDigClass, int.class, 1).getInt(packet);
+                z = Reflection.getField(blockDigClass, int.class, 2).getInt(packet);
+                enumDirection = null;
+            } else {
+                //1.8+
+                final Object blockPosObj = Reflection.getField(blockDigClass, blockPositionClass, 0).get(packet);
+                final Object enumDirectionObj = Reflection.getField(blockDigClass, enumDirectionClass, 0).get(packet);
+                final Object digTypeObj = Reflection.getField(blockDigClass, digTypeClass, 0).get(packet);
+
+                Class<?> blockPosSuper = blockPositionClass;
+                x = Reflection.getField(blockPosSuper, int.class, 0).getInt(blockPosObj);
+                y = Reflection.getField(blockPosSuper, int.class, 1).getInt(blockPosObj);
+                z = Reflection.getField(blockPosSuper, int.class, 2).getInt(blockPosObj);
+
+                enumDirection = Direction.valueOf(((Enum) enumDirectionObj).name());
+                enumDigType = PlayerDigType.valueOf(((Enum) digTypeObj).name());
+            }
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        this.blockPosition = new Vector3i(x, y, z);
+        if (enumDirection == null) {
+            this.direction = Direction.NULL;
+        } else {
+            this.direction = enumDirection;
+        }
+        this.digType = enumDigType;
+    }
+
+    public Vector3i getBlockPosition() {
+        return blockPosition;
+    }
+
+    public Direction getDirection() {
+        return direction;
+    }
+
+    public PlayerDigType getDigType() {
+        return digType;
+    }
+
+    public enum PlayerDigType {
+
+        START_DESTROY_BLOCK,
+
+        ABORT_DESTROY_BLOCK,
+
+        STOP_DESTROY_BLOCK,
+
+        DROP_ALL_ITEMS,
+
+        DROP_ITEM,
+
+        RELEASE_USE_ITEM,
+
+        SWAP_HELD_ITEMS,
+
+        SWAP_ITEM_WITH_OFFHAND,
+
+        WRONG_PACKET
+    }
+
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/blockplace/WrappedPacketInBlockPlace.java

@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+
+public final class WrappedPacketInBlockPlace extends WrappedPacket {
+    private static boolean isHigherThan_v_1_8_8, isHigherThan_v_1_7_10;
+    private Vector3i blockPosition;
+    private ItemStack itemStack;
+    public WrappedPacketInBlockPlace(final Player player, final Object packet) {
+        super(player, packet);
+    }
+
+    public static void load() {
+        isHigherThan_v_1_8_8 = version.isHigherThan(ServerVersion.v_1_8_8);
+        isHigherThan_v_1_7_10 = version.isHigherThan(ServerVersion.v_1_7_10);
+        if (isHigherThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8.load();
+        }
+    }
+
+    @Override
+    protected void setup() {
+        //1.7.10
+        Vector3i position = null;
+        ItemStack itemStack = null;
+        try {
+            if (isHigherThan_v_1_8_8) {
+                final WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
+                final Block block = blockPlace_1_9.getBlock();
+                position = new Vector3i(block.getX(), block.getY(), block.getZ());
+                itemStack = new ItemStack(block.getType());
+            } else if (isHigherThan_v_1_7_10) {
+                final WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+                position = blockPlace_1_8.getBlockPosition();
+                itemStack = blockPlace_1_8.getItemStack();
+            } else {
+                final WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(getPlayer(), packet);
+                position = blockPlace_1_7_10.getBlockPosition();
+                itemStack = blockPlace_1_7_10.getItemStack();
+            }
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        }
+        this.blockPosition = position;
+        this.itemStack = itemStack;
+    }
+
+    public Player getPlayer() {
+        return this.player;
+    }
+
+    public Vector3i getBlockPosition() {
+        return blockPosition;
+    }
+
+    @Nullable
+    public ItemStack getItemStack() {
+        return itemStack;
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/blockplace/WrappedPacketInBlockPlace_1_7_10.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
+
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+final class WrappedPacketInBlockPlace_1_7_10 extends WrappedPacket {
+    private Vector3i blockPosition;
+    private ItemStack itemStack;
+    private int blockFace;
+
+    WrappedPacketInBlockPlace_1_7_10(final Player player, final Object packet) {
+        super(player, packet);
+    }
+
+
+    @Override
+    protected void setup() {
+        final PacketPlayInBlockPlace blockPlace = (PacketPlayInBlockPlace) packet;
+
+        this.blockPosition = new Vector3i(blockPlace.c(), blockPlace.d(), blockPlace.e());
+
+        this.blockFace = blockPlace.d();
+
+        net.minecraft.server.v1_7_R4.ItemStack stack = blockPlace.getItemStack();
+        this.itemStack = org.bukkit.craftbukkit.v1_7_R4.inventory.CraftItemStack.asBukkitCopy(stack);
+    }
+
+    public Vector3i getBlockPosition() {
+        return blockPosition;
+    }
+
+    public ItemStack getItemStack() {
+        return itemStack;
+    }
+
+    public int getBlockFace() {
+        return blockFace;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/blockplace/WrappedPacketInBlockPlace_1_8.java

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import org.bukkit.inventory.ItemStack;
+
+import java.lang.reflect.InvocationTargetException;
+
+final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
+    private static Class<?> blockPlaceClass, blockPositionClass, blockPositionSuperClass;
+    private Vector3i blockPosition;
+    private ItemStack itemStack;
+
+    WrappedPacketInBlockPlace_1_8(final Object packet) {
+        super(packet);
+    }
+
+    protected static void load() {
+        blockPlaceClass = PacketTypeClasses.Client.BLOCK_PLACE;
+        try {
+            blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+        blockPositionSuperClass = blockPositionClass.getSuperclass();
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            Object nmsBlockPos = Reflection.getField(blockPlaceClass, blockPositionClass, 1).get(packet);
+            this.blockPosition = new Vector3i(0, 0, 0);
+            this.blockPosition.x = (int) Reflection.getMethod(blockPositionSuperClass, "getX", 0).invoke(nmsBlockPos);
+            this.blockPosition.y = (int) Reflection.getMethod(blockPositionSuperClass, "getY", 0).invoke(nmsBlockPos);
+            this.blockPosition.z = (int) Reflection.getMethod(blockPositionSuperClass, "getZ", 0).invoke(nmsBlockPos);
+
+
+            this.itemStack = NMSUtils.toBukkitItemStack(Reflection.getField(blockPlaceClass, NMSUtils.nmsItemStackClass, 0).get(packet));
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Deprecated
+    public Vector3i getBlockPosition() {
+        return blockPosition;
+    }
+
+    public int getBlockPositionX() {
+        return blockPosition.x;
+    }
+
+    public int getBlockPositionY() {
+        return blockPosition.y;
+    }
+
+    public int getBlockPositionZ() {
+        return blockPosition.z;
+    }
+
+    public ItemStack getItemStack() {
+        return itemStack;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/blockplace/WrappedPacketInBlockPlace_1_9.java

@@ -0,0 +1,34 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
+
+
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.utils.BlockIteratorUtils;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+
+final class WrappedPacketInBlockPlace_1_9 extends WrappedPacket {
+    private Block block;
+
+    public WrappedPacketInBlockPlace_1_9(final Player player, final Object packet) {
+        super(player, packet);
+    }
+
+
+    @Override
+    protected void setup() {
+        this.block = BlockIteratorUtils.getBlockLookingAt(getPlayer(), 3);
+    }
+
+    public Player getPlayer() {
+        return this.player;
+    }
+
+    public Block getBlock() {
+        return block;
+    }
+
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/chat/WrappedPacketInChat.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.chat;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public final class WrappedPacketInChat extends WrappedPacket {
+    private static Class<?> chatPacketClass;
+    private String message;
+
+    public WrappedPacketInChat(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        chatPacketClass = PacketTypeClasses.Client.CHAT;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            final Object obj = Reflection.getField(chatPacketClass, String.class, 0).get(packet);
+            this.message = obj.toString();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/clientcommand/WrappedPacketInClientCommand.java

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.clientcommand;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+//TODO: Test on 1.9, 1.10, 1.11, 1.13, 1.14
+public final class WrappedPacketInClientCommand extends WrappedPacket {
+    private static Class<?> packetClass;
+    @Nullable
+    private static Class<?> enumClientCommandClass;
+
+    private static boolean isLowerThan_v_1_8;
+    private ClientCommand clientCommand;
+
+    public WrappedPacketInClientCommand(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.CLIENT_COMMAND;
+
+        isLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
+        try {
+            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
+                enumClientCommandClass = Reflection.getSubClass(packetClass, "EnumClientCommand");
+            } else {
+                enumClientCommandClass = NMSUtils.getNMSClass("EnumClientCommand");
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void setup() {
+        try {
+            Object enumObj = Reflection.getField(packetClass, enumClientCommandClass, 0).get(packet);
+            this.clientCommand = ClientCommand.valueOf(enumObj.toString());
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public ClientCommand getClientCommand() {
+        return clientCommand;
+    }
+
+    public enum ClientCommand {
+        PERFORM_RESPAWN,
+        REQUEST_STATS,
+        OPEN_INVENTORY_ACHIEVEMENT
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/custompayload/WrappedPacketInCustomPayload.java

@@ -0,0 +1,77 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.custompayload;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Field;
+
+public final class WrappedPacketInCustomPayload extends WrappedPacket {
+    private static Class<?> packetClass, nmsMinecraftKey, nmsPacketDataSerializer;
+
+    private static boolean strPresentInIndex0;
+    private String data;
+    private Object minecraftKey, dataSerializer;
+    public WrappedPacketInCustomPayload(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.CUSTOM_PAYLOAD;
+        strPresentInIndex0 = Reflection.getField(packetClass, String.class, 0) != null;
+        try {
+            nmsPacketDataSerializer = NMSUtils.getNMSClass("PacketDataSerializer");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+        try {
+            //Only on 1.13+
+            nmsMinecraftKey = NMSUtils.getNMSClass("MinecraftKey");
+        } catch (ClassNotFoundException e) {
+            //Its okay, this means they are on versions 1.7.10 ~ 1.12.2
+        }
+    }
+
+    @Override
+    public void setup() {
+        if (!strPresentInIndex0) {
+            try {
+                this.minecraftKey = Reflection.getField(packetClass, nmsMinecraftKey, 0).get(packet);
+                this.dataSerializer = Reflection.getField(packetClass, nmsPacketDataSerializer, 0).get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+
+        } else {
+            Field dataSerializerField = Reflection.getField(packetClass, nmsPacketDataSerializer, 0);
+            try {
+                this.data = (String) Reflection.getField(packetClass, String.class, 0).get(packet);
+                if (dataSerializerField != null) {
+                    this.dataSerializer = dataSerializerField.get(packet);
+                }
+
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+
+        }
+    }
+
+    public String getData() {
+        return data;
+    }
+
+    public Object getMinecraftKey() {
+        return minecraftKey;
+    }
+
+    @Nullable
+    public Object getDataSerializer() {
+        return dataSerializer;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/entityaction/WrappedPacketInEntityAction.java

@@ -0,0 +1,113 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.entityaction;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.entity.Entity;
+
+import java.util.HashMap;
+
+public final class WrappedPacketInEntityAction extends WrappedPacket {
+    private static final HashMap<String, PlayerAction> cachedPlayerActionNames = new HashMap<String, PlayerAction>();
+    private static final HashMap<Integer, PlayerAction> cachedPlayerActionIDs = new HashMap<Integer, PlayerAction>();
+    private static Class<?> entityActionClass;
+    @Nullable
+    private static Class<?> enumPlayerActionClass;
+    private static boolean isLowerThan_v_1_8;
+    private Entity entity;
+    private int entityId;
+    private PlayerAction action;
+    private int jumpBoost;
+    public WrappedPacketInEntityAction(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        entityActionClass = PacketTypeClasses.Client.ENTITY_ACTION;
+        isLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
+        if (version.isHigherThan(ServerVersion.v_1_7_10)) {
+            enumPlayerActionClass = Reflection.getSubClass(entityActionClass, "EnumPlayerAction");
+        }
+        //All the already existing values
+        for (PlayerAction val : PlayerAction.values()) {
+            cachedPlayerActionNames.put(val.name(), val);
+        }
+
+        cachedPlayerActionNames.put("PRESS_SHIFT_KEY", PlayerAction.START_SNEAKING);
+        cachedPlayerActionNames.put("RELEASE_SHIFT_KEY", PlayerAction.STOP_SNEAKING);
+        cachedPlayerActionNames.put("RIDING_JUMP", PlayerAction.START_RIDING_JUMP);
+
+        cachedPlayerActionIDs.put(1, PlayerAction.START_SNEAKING);
+        cachedPlayerActionIDs.put(2, PlayerAction.STOP_SNEAKING);
+        cachedPlayerActionIDs.put(3, PlayerAction.STOP_SLEEPING);
+        cachedPlayerActionIDs.put(4, PlayerAction.START_SPRINTING);
+        cachedPlayerActionIDs.put(5, PlayerAction.STOP_SPRINTING);
+        cachedPlayerActionIDs.put(6, PlayerAction.START_RIDING_JUMP); //riding jump
+        cachedPlayerActionIDs.put(7, PlayerAction.OPEN_INVENTORY); //horse interaction
+
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            final int entityId = Reflection.getField(entityActionClass, int.class, 0).getInt(packet);
+            final int jumpBoost;
+            if (isLowerThan_v_1_8) {
+                jumpBoost = Reflection.getField(entityActionClass, int.class, 2).getInt(packet);
+            } else {
+                jumpBoost = Reflection.getField(entityActionClass, int.class, 1).getInt(packet);
+            }
+
+            //1.7.10
+            if (isLowerThan_v_1_8) {
+                int animationIndex = Reflection.getField(entityActionClass, int.class, 1).getInt(packet); // TODO: += if packetdataserializer.version < 16
+                this.action = cachedPlayerActionIDs.get(animationIndex);
+            } else {
+                final Object enumObj = Reflection.getField(entityActionClass, enumPlayerActionClass, 0).get(packet);
+                final String enumName = enumObj.toString();
+                this.action = cachedPlayerActionNames.get(enumName);
+            }
+
+
+            this.entityId = entityId;
+            this.jumpBoost = jumpBoost;
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public Entity getEntity() {
+        return NMSUtils.getEntityById(this.entityId);
+    }
+
+    public int getEntityId() {
+        return entityId;
+    }
+
+    public PlayerAction getAction() {
+        return action;
+    }
+
+    public int getJumpBoost() {
+        return jumpBoost;
+    }
+
+    public enum PlayerAction {
+        START_SNEAKING,
+        STOP_SNEAKING,
+        STOP_SLEEPING,
+        START_SPRINTING,
+        STOP_SPRINTING,
+        START_RIDING_JUMP,
+        STOP_RIDING_JUMP,
+        OPEN_INVENTORY,
+        START_FALL_FLYING
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/flying/WrappedPacketInFlying.java

@@ -0,0 +1,159 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.flying;
+
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public class WrappedPacketInFlying extends WrappedPacket {
+    private static Class<?> flyingClass;
+    protected double x;
+    protected double y;
+    protected double z;
+    protected float yaw;
+    protected float pitch;
+    protected boolean onGround;
+    protected boolean isPosition;
+    protected boolean isLook;
+    public WrappedPacketInFlying(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        flyingClass = PacketTypeClasses.Client.FLYING;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            //x, y, z, yaw pitch, onGround, isPosition, isLook
+            this.x = Reflection.getField(flyingClass, double.class, 0).getDouble(packet);
+            this.y = Reflection.getField(flyingClass, double.class, 1).getDouble(packet);
+            this.z = Reflection.getField(flyingClass, double.class, 2).getDouble(packet);
+
+            this.yaw = Reflection.getField(flyingClass, float.class, 0).getFloat(packet);
+            this.pitch = Reflection.getField(flyingClass, float.class, 1).getFloat(packet);
+
+            this.onGround = Reflection.getField(flyingClass, boolean.class, 0).getBoolean(packet);
+
+            this.isPosition = Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
+            this.isLook = Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public final double getX() {
+        return x;
+    }
+
+    public final double getY() {
+        return y;
+    }
+
+    public final double getZ() {
+        return z;
+    }
+
+    public final float getYaw() {
+        return yaw;
+    }
+
+    public final float getPitch() {
+        return pitch;
+    }
+
+    public final boolean isOnGround() {
+        return onGround;
+    }
+
+    public final boolean isPosition() {
+        return isPosition;
+    }
+
+    public final boolean isLook() {
+        return isLook;
+    }
+
+    public static class WrappedPacketInPosition extends WrappedPacketInFlying {
+
+        public WrappedPacketInPosition(Object packet) {
+            super(packet);
+        }
+
+        @Override
+        protected void setup() {
+            try {
+                this.x = Reflection.getField(flyingClass, double.class, 0).getDouble(packet);
+                this.y = Reflection.getField(flyingClass, double.class, 1).getDouble(packet);
+                this.z = Reflection.getField(flyingClass, double.class, 2).getDouble(packet);
+
+                this.yaw = Reflection.getField(flyingClass, float.class, 0).getFloat(packet);
+                this.pitch = Reflection.getField(flyingClass, float.class, 1).getFloat(packet);
+
+                this.onGround = Reflection.getField(flyingClass, boolean.class, 0).getBoolean(packet);
+
+                this.isPosition = Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
+                this.isLook = Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static class WrappedPacketInPosition_Look extends WrappedPacketInFlying {
+
+        public WrappedPacketInPosition_Look(Object packet) {
+            super(packet);
+        }
+
+        @Override
+        protected void setup() {
+            try {
+                this.x = Reflection.getField(flyingClass, double.class, 0).getDouble(packet);
+                this.y = Reflection.getField(flyingClass, double.class, 1).getDouble(packet);
+                this.z = Reflection.getField(flyingClass, double.class, 2).getDouble(packet);
+
+                this.yaw = Reflection.getField(flyingClass, float.class, 0).getFloat(packet);
+                this.pitch = Reflection.getField(flyingClass, float.class, 1).getFloat(packet);
+
+                this.onGround = Reflection.getField(flyingClass, boolean.class, 0).getBoolean(packet);
+
+                this.isPosition = Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
+                this.isLook = Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static class WrappedPacketInLook extends WrappedPacketInFlying {
+
+        public WrappedPacketInLook(Object packet) {
+            super(packet);
+        }
+
+        @Override
+        protected void setup() {
+            try {
+                this.x = Reflection.getField(flyingClass, double.class, 0).getDouble(packet);
+                this.y = Reflection.getField(flyingClass, double.class, 1).getDouble(packet);
+                this.z = Reflection.getField(flyingClass, double.class, 2).getDouble(packet);
+
+                this.yaw = Reflection.getField(flyingClass, float.class, 0).getFloat(packet);
+                this.pitch = Reflection.getField(flyingClass, float.class, 1).getFloat(packet);
+
+                this.onGround = Reflection.getField(flyingClass, boolean.class, 0).getBoolean(packet);
+
+                this.isPosition = Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
+                this.isLook = Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/helditemslot/WrappedPacketInHeldItemSlot.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.helditemslot;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public final class WrappedPacketInHeldItemSlot extends WrappedPacket {
+    private static Class<?> packetClass;
+    private int itemInHandIndex;
+
+    public WrappedPacketInHeldItemSlot(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.HELD_ITEM_SLOT;
+    }
+
+    @Override
+    public void setup() {
+        try {
+            itemInHandIndex = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public int getItemInHandIndex() {
+        return itemInHandIndex;
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/keepalive/WrappedPacketInKeepAlive.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.keepalive;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public final class WrappedPacketInKeepAlive extends WrappedPacket {
+    private static Class<?> packetClass;
+    private static boolean integerPresentInIndex0;
+    private long id;
+
+    public WrappedPacketInKeepAlive(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.KEEP_ALIVE;
+        integerPresentInIndex0 = Reflection.getField(packetClass, int.class, 0) != null;
+    }
+
+    @Override
+    protected void setup() {
+        if (!integerPresentInIndex0) {
+            try {
+                this.id = Reflection.getField(packetClass, long.class, 0).getLong(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        } else {
+            try {
+                this.id = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * Optionally Cast this long to an integer if you are using 1.7.10 -&gt; 1.12.2!
+     * In 1.13.2 -&gt; 1.16.1 a long is sent
+     *
+     * @return response is
+     */
+    public long getId() {
+        return id;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/settings/WrappedPacketInSettings.java

@@ -0,0 +1,144 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.settings;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.util.HashMap;
+
+public class WrappedPacketInSettings extends WrappedPacket {
+    private static Class<?> packetClass;
+    private static Class<?> chatVisibilityEnumClass;
+
+    private static boolean isLowerThan_v_1_8;
+    private String locale;
+    private byte viewDistance;
+    private ChatVisibility chatVisibility;
+    private boolean chatColors;
+    private HashMap<DisplayedSkinPart, Boolean> displayedSkinParts;
+    public WrappedPacketInSettings(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.SETTINGS;
+
+        isLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
+
+        try {
+            chatVisibilityEnumClass = NMSUtils.getNMSClass("EnumChatVisibility");
+        } catch (ClassNotFoundException e) {
+            Class<?> entityHumanClass = NMSUtils.getNMSClassWithoutException("EntityHuman");
+            //They are just on an outdated version
+            chatVisibilityEnumClass = Reflection.getSubClass(entityHumanClass, "EnumChatVisibility");
+        }
+    }
+
+    public static Class<?> getChatVisibilityEnumClass() {
+        return chatVisibilityEnumClass;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            //LOCALE
+            this.locale = Reflection.getField(packetClass, String.class, 0).get(packet).toString();
+            //VIEW DISTANCE
+            this.viewDistance = (byte) Reflection.getField(packetClass, int.class, 0).getInt(packet);
+
+            //CHAT VISIBILITY
+            Object chatVisibilityEnumObject = Reflection.getField(packetClass, chatVisibilityEnumClass, 0).get(packet);
+            String enumValueAsString = chatVisibilityEnumObject.toString();
+            if (enumValueAsString.equals("FULL")) {
+                chatVisibility = ChatVisibility.ENABLED;
+            } else if (enumValueAsString.equals("SYSTEM")) {
+                chatVisibility = ChatVisibility.COMMANDS_ONLY;
+            } else {
+                chatVisibility = ChatVisibility.HIDDEN;
+            }
+
+            //CHAT COLORS
+            this.chatColors = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
+
+            //DISPLAYED SKIN PARTS
+            this.displayedSkinParts = new HashMap<DisplayedSkinPart, Boolean>();
+
+            if (isLowerThan_v_1_8) {
+                //in 1.7.10 only the cape display skin part is sent
+                boolean capeEnabled = Reflection.getField(packetClass, boolean.class, 1).getBoolean(packet);
+                displayedSkinParts.put(DisplayedSkinPart.CAPE, capeEnabled);
+            } else {
+                //in 1.8, all the skin parts are sent
+                int skinPartFlags = Reflection.getField(packetClass, int.class, 1).getInt(packet);
+                displayedSkinParts.put(DisplayedSkinPart.CAPE, (skinPartFlags & 0x01) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.JACKET, (skinPartFlags & 0x02) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.LEFT_SLEEVE, (skinPartFlags & 0x04) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.RIGHT_SLEEVE, (skinPartFlags & 0x08) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.LEFT_PANTS, (skinPartFlags & 0x10) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.RIGHT_PANTS, (skinPartFlags & 0x20) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.HAT, (skinPartFlags & 0x40) != 0);
+            }
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public String getLocale() {
+        return locale;
+    }
+
+    public byte getViewDistance() {
+        return viewDistance;
+    }
+
+    public ChatVisibility getChatVisibility() {
+        return chatVisibility;
+    }
+
+    public boolean isChatColors() {
+        return chatColors;
+    }
+
+    /**
+     * It is possible for some keys to not exist.
+     * If that is the case, the server version is 1.7.10.
+     * 1.7.10 only sends the cape skin part.
+     *
+     * @return A map associating skin parts with whether or not they are enabled.
+     */
+    @Nullable
+    public HashMap<DisplayedSkinPart, Boolean> getDisplayedSkinPartsMap() {
+        return displayedSkinParts;
+    }
+
+    /**
+     * On 1.7.10, some skin parts will default to 'false' as 1.7.10
+     * only sends the 'cape' skin part.
+     *
+     * @param part The skin part to check the status of.
+     * @return True if the specified skin part is enabled, otherwise false.
+     */
+    public boolean isDisplaySkinPartEnabled(DisplayedSkinPart part) {
+        //1.7.10, we will default the other skin parts to return false.
+        if (!displayedSkinParts.containsKey(part)) {
+            return false;
+        }
+        return displayedSkinParts.get(part);
+    }
+
+    public enum ChatVisibility {
+        ENABLED, COMMANDS_ONLY, HIDDEN
+    }
+
+    public enum DisplayedSkinPart {
+        CAPE, JACKET, LEFT_SLEEVE, RIGHT_SLEEVE, LEFT_PANTS, RIGHT_PANTS, HAT
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/steervehicle/WrappedPacketInSteerVehicle.java

@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.steervehicle;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public class WrappedPacketInSteerVehicle extends WrappedPacket {
+    private static Class<?> packetClass;
+    private float side, forward;
+    private boolean jump, unmount;
+    public WrappedPacketInSteerVehicle(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.STEER_VEHICLE;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.side = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
+            this.forward = Reflection.getField(packetClass, float.class, 1).getFloat(packet);
+
+            this.jump = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
+            this.unmount = Reflection.getField(packetClass, boolean.class, 1).getBoolean(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    //Positive side value means left, negative means right
+    public float getSideValue() {
+        return side;
+    }
+
+    //Positive forward value means forward, negative is backwards
+    public float getForwardValue() {
+        return forward;
+    }
+
+    public boolean isJump() {
+        return jump;
+    }
+
+    public boolean isUnmount() {
+        return unmount;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/transaction/WrappedPacketInTransaction.java

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.transaction;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public final class WrappedPacketInTransaction extends WrappedPacket {
+    private static Class<?> packetClass;
+    private int windowId;
+    private short actionNumber;
+    private boolean accepted;
+    public WrappedPacketInTransaction(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.TRANSACTION;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.windowId = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+            this.actionNumber = Reflection.getField(packetClass, short.class, 0).getShort(packet);
+            this.accepted = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public int getWindowId() {
+        return windowId;
+    }
+
+    public short getActionNumber() {
+        return actionNumber;
+    }
+
+    public boolean isAccepted() {
+        return accepted;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/useentity/WrappedPacketInUseEntity.java

@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.useentity;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.entity.Entity;
+
+public final class WrappedPacketInUseEntity extends WrappedPacket {
+    private static Class<?> useEntityClass;
+    private static Class<?> enumEntityUseActionClass;
+    private int entityId;
+    private EntityUseAction action;
+    public WrappedPacketInUseEntity(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        useEntityClass = PacketTypeClasses.Client.USE_ENTITY;
+
+        try {
+            enumEntityUseActionClass = NMSUtils.getNMSClass("EnumEntityUseAction");
+        } catch (ClassNotFoundException e) {
+            //That is fine, it is probably a subclass
+            enumEntityUseActionClass = Reflection.getSubClass(useEntityClass, "EnumEntityUseAction");
+        }
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.entityId = Reflection.getField(useEntityClass, int.class, 0).getInt(packet);
+            final Object useActionEnum = Reflection.getField(useEntityClass, enumEntityUseActionClass, 0).get(packet);
+            this.action = EntityUseAction.valueOf(useActionEnum.toString());
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public Entity getEntity() {
+        return NMSUtils.getEntityById(this.entityId);
+    }
+
+    public int getEntityId() {
+        return entityId;
+    }
+
+    public EntityUseAction getAction() {
+        return action;
+    }
+
+    public enum EntityUseAction {
+        INTERACT, INTERACT_AT, ATTACK, INVALID
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/windowclick/WrappedPacketInWindowClick.java

@@ -0,0 +1,188 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.in.windowclick;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+
+public class WrappedPacketInWindowClick extends WrappedPacket {
+    private static final HashMap<String, Integer> invClickTypeMapCache = new HashMap<String, Integer>();
+    private static final HashMap<Integer, ArrayList<WindowClickType>> windowClickTypeCache = new HashMap<Integer, ArrayList<WindowClickType>>();
+    private static Class<?> packetClass, invClickTypeClass;
+    private static boolean isClickModePrimitive = false;
+    private int id;
+    private int slot;
+    private int button;
+    private short actionNumber;
+    private int mode;
+    private ItemStack clickedItem;
+
+    public WrappedPacketInWindowClick(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Client.WINDOW_CLICK;
+        invClickTypeClass = NMSUtils.getNMSClassWithoutException("InventoryClickType");
+
+        invClickTypeMapCache.put("PICKUP", 0);
+        invClickTypeMapCache.put("QUICK_MOVE", 1);
+        invClickTypeMapCache.put("SWAP", 2);
+        invClickTypeMapCache.put("CLONE", 3);
+        invClickTypeMapCache.put("THROW", 4);
+        invClickTypeMapCache.put("QUICK_CRAFT", 5);
+        invClickTypeMapCache.put("PICKUP_ALL", 6);
+
+        //MODE 0
+        windowClickTypeCache.put(0, getArrayListOfWindowClickTypes(WindowClickType.LEFT_MOUSE_CLICK,
+                WindowClickType.RIGHT_MOUSE_CLICK));
+
+        //MODE 1
+        windowClickTypeCache.put(1, getArrayListOfWindowClickTypes(WindowClickType.SHIFT_LEFT_MOUSE_CLICK,
+                WindowClickType.SHIFT_RIGHT_MOUSE_CLICK));
+
+        //MODE 2
+        windowClickTypeCache.put(2, getArrayListOfWindowClickTypes(
+                WindowClickType.KEY_NUMBER1,
+                WindowClickType.KEY_NUMBER2,
+                WindowClickType.KEY_NUMBER3,
+                WindowClickType.KEY_NUMBER4,
+                WindowClickType.KEY_NUMBER5,
+                WindowClickType.KEY_NUMBER6,
+                WindowClickType.KEY_NUMBER7,
+                WindowClickType.KEY_NUMBER8,
+                WindowClickType.KEY_NUMBER9));
+
+        //MODE 3
+        windowClickTypeCache.put(3, getArrayListOfWindowClickTypes(WindowClickType.UNKNOWN, WindowClickType.UNKNOWN, WindowClickType.CREATIVE_MIDDLE_CLICK));
+
+        //MODE 4
+        windowClickTypeCache.put(4, getArrayListOfWindowClickTypes(WindowClickType.KEY_DROP,
+                WindowClickType.KEY_DROP_STACK));
+
+        //MODE 5
+        windowClickTypeCache.put(5, getArrayListOfWindowClickTypes(
+                WindowClickType.STARTING_LEFT_MOUSE_DRAG,
+                WindowClickType.ADD_SLOT_LEFT_MOUSE_DRAG,
+                WindowClickType.ENDING_LEFT_MOUSE_DRAG,
+                WindowClickType.UNKNOWN,
+                WindowClickType.STARTING_RIGHT_MOUSE_DRAG,
+                WindowClickType.ADD_SLOT_RIGHT_MOUSE_DRAG,
+                WindowClickType.CREATIVE_STARTING_MIDDLE_MOUSE_DRAG,
+                WindowClickType.ADD_SLOT_MIDDLE_MOUSE_DRAG,
+                WindowClickType.ENDING_MIDDLE_MOUSE_DRAG));
+
+        windowClickTypeCache.put(6, getArrayListOfWindowClickTypes(WindowClickType.DOUBLE_CLICK));
+        isClickModePrimitive = Reflection.getField(packetClass, int.class, 3) != null;
+    }
+
+    private static ArrayList<WindowClickType> getArrayListOfWindowClickTypes(WindowClickType... types) {
+        ArrayList<WindowClickType> arrayList = new ArrayList<WindowClickType>(types.length);
+        arrayList.addAll(Arrays.asList(types));
+        return arrayList;
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.id = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+            this.slot = Reflection.getField(packetClass, int.class, 1).getInt(packet);
+            this.button = Reflection.getField(packetClass, int.class, 2).getInt(packet);
+            this.actionNumber = Reflection.getField(packetClass, short.class, 0).getShort(packet);
+            Object nmsItemStack = Reflection.getField(packetClass, NMSUtils.nmsItemStackClass, 0).get(packet);
+            this.clickedItem = NMSUtils.toBukkitItemStack(nmsItemStack);
+            Object clickMode = Reflection.getField(packetClass, 5).get(packet);
+
+            if (isClickModePrimitive) {
+                mode = (int) clickMode;
+            } else {
+                mode = invClickTypeMapCache.get(clickMode.toString());
+            }
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public int getWindowID() {
+        return id;
+    }
+
+    public int getWindowSlot() {
+        return slot;
+    }
+
+    public int getWindowButton() {
+        return button;
+    }
+
+    public short getActionNumber() {
+        return actionNumber;
+    }
+
+    @Nullable
+    public WindowClickType getWindowClickType() {
+        if (windowClickTypeCache.get(mode) == null) {
+            return WindowClickType.UNKNOWN;
+        }
+        if (button + 1 > windowClickTypeCache.size()) {
+            return WindowClickType.UNKNOWN;
+        }
+
+        if (mode == 4) {
+            if (slot == -999) {
+                if (button == 0) {
+                    return WindowClickType.LEFT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING;
+                } else if (button == 1) {
+                    return WindowClickType.RIGHT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING;
+                }
+            }
+        }
+        return windowClickTypeCache.get(mode).get(button);
+    }
+
+    public int getMode() {
+        return mode;
+    }
+
+    public ItemStack getClickedItem() {
+        return clickedItem;
+    }
+
+    public enum WindowClickType {
+        LEFT_MOUSE_CLICK, RIGHT_MOUSE_CLICK,
+        SHIFT_LEFT_MOUSE_CLICK, SHIFT_RIGHT_MOUSE_CLICK,
+
+        CREATIVE_MIDDLE_CLICK, CREATIVE_STARTING_MIDDLE_MOUSE_DRAG,
+
+        KEY_NUMBER1, KEY_NUMBER2, KEY_NUMBER3, KEY_NUMBER4,
+        KEY_NUMBER5, KEY_NUMBER6, KEY_NUMBER7, KEY_NUMBER8,
+        KEY_NUMBER9, KEY_DROP, KEY_DROP_STACK,
+
+        LEFT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING,
+        RIGHT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING,
+
+        STARTING_LEFT_MOUSE_DRAG,
+        STARTING_RIGHT_MOUSE_DRAG,
+
+        ADD_SLOT_LEFT_MOUSE_DRAG,
+        ADD_SLOT_RIGHT_MOUSE_DRAG,
+        ADD_SLOT_MIDDLE_MOUSE_DRAG,
+
+        ENDING_LEFT_MOUSE_DRAG,
+        ENDING_RIGHT_MOUSE_DRAG,
+        ENDING_MIDDLE_MOUSE_DRAG,
+
+        DOUBLE_CLICK,
+
+        UNKNOWN
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/abilities/PlayerAbilitiesUtils.java

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.abilities;
+
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+final class PlayerAbilitiesUtils {
+    public static Class<?> playerAbilitiesClass;
+    public static Constructor<?> playerAbilitiesConstructor;
+
+    static {
+        try {
+            playerAbilitiesClass = NMSUtils.getNMSClass("PlayerAbilities");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+        try {
+            playerAbilitiesConstructor = playerAbilitiesClass.getConstructor();
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static Object getPlayerAbilities(final boolean isVulnerable, final boolean isFlying, final boolean allowFlight, final boolean canBuildInstantly,
+                                            final float flySpeed, final float walkSpeed) throws IllegalAccessException, InvocationTargetException, InstantiationException {
+        final Object instance = playerAbilitiesConstructor.newInstance();
+        Reflection.getField(playerAbilitiesClass, boolean.class, 0).setBoolean(instance, isVulnerable);
+        Reflection.getField(playerAbilitiesClass, boolean.class, 1).setBoolean(instance, isFlying);
+        Reflection.getField(playerAbilitiesClass, boolean.class, 2).setBoolean(instance, allowFlight);
+        Reflection.getField(playerAbilitiesClass, boolean.class, 3).setBoolean(instance, canBuildInstantly);
+
+        Reflection.getField(playerAbilitiesClass, float.class, 0).setFloat(instance, flySpeed);
+        Reflection.getField(playerAbilitiesClass, float.class, 1).setFloat(instance, walkSpeed);
+        return instance;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/abilities/WrappedPacketOutAbilities.java

@@ -0,0 +1,93 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.abilities;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class WrappedPacketOutAbilities extends WrappedPacket implements Sendable {
+    private static Class<?> packetClass;
+    private static Constructor<?> packetConstructor;
+    private boolean vulnerable, flying, allowFlight, instantBuild;
+    private float flySpeed, walkSpeed;
+    public WrappedPacketOutAbilities(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutAbilities(final boolean isVulnerable, final boolean isFlying, final boolean allowFlight, final boolean canBuildInstantly,
+                                     final float flySpeed, final float walkSpeed) {
+        super();
+        this.vulnerable = isVulnerable;
+        this.flying = isFlying;
+        this.allowFlight = allowFlight;
+        this.instantBuild = canBuildInstantly;
+        this.flySpeed = flySpeed;
+        this.walkSpeed = walkSpeed;
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.ABILITIES;
+
+        try {
+            packetConstructor = packetClass.getConstructor(PlayerAbilitiesUtils.playerAbilitiesClass);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.vulnerable = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
+            this.flying = Reflection.getField(packetClass, boolean.class, 1).getBoolean(packet);
+            this.allowFlight = Reflection.getField(packetClass, boolean.class, 2).getBoolean(packet);
+            this.instantBuild = Reflection.getField(packetClass, boolean.class, 3).getBoolean(packet);
+
+            this.flySpeed = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
+            this.walkSpeed = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public boolean isVulnerable() {
+        return vulnerable;
+    }
+
+    public boolean isFlying() {
+        return flying;
+    }
+
+    public boolean isFlightAllowed() {
+        return allowFlight;
+    }
+
+    public boolean canInstantlyBuild() {
+        return instantBuild;
+    }
+
+    public float getFlySpeed() {
+        return flySpeed;
+    }
+
+    public float getWalkSpeed() {
+        return walkSpeed;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(PlayerAbilitiesUtils.getPlayerAbilities(vulnerable, flying, allowFlight, instantBuild, flySpeed, walkSpeed));
+        } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/animation/WrappedPacketOutAnimation.java

@@ -0,0 +1,106 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.animation;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.entity.Entity;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+
+public final class WrappedPacketOutAnimation extends WrappedPacket implements Sendable {
+    private static Class<?> animationClass, nmsEntityClass;
+    private static Constructor<?> animationConstructor;
+
+    private static final HashMap<Integer, EntityAnimationType> cachedAnimationIDS = new HashMap<Integer, EntityAnimationType>();
+    private static final HashMap<EntityAnimationType, Integer> cachedAnimations = new HashMap<EntityAnimationType, Integer>();
+    private Entity entity;
+    private int entityID;
+    private EntityAnimationType type;
+    public WrappedPacketOutAnimation(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutAnimation(final Entity target, final EntityAnimationType type) {
+        super();
+        this.entityID = target.getEntityId();
+        this.entity = target;
+        this.type = type;
+    }
+
+    public static void load() {
+        animationClass = PacketTypeClasses.Server.ANIMATION;
+        try {
+            nmsEntityClass = NMSUtils.getNMSClass("Entity");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            animationConstructor = animationClass.getConstructor(nmsEntityClass, int.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+        cachedAnimationIDS.put(0, EntityAnimationType.SWING_MAIN_ARM);
+        cachedAnimationIDS.put(1, EntityAnimationType.TAKE_DAMAGE);
+        cachedAnimationIDS.put(2, EntityAnimationType.LEAVE_BED);
+        cachedAnimationIDS.put(3, EntityAnimationType.SWING_OFFHAND);
+        cachedAnimationIDS.put(4, EntityAnimationType.CRITICAL_EFFECT);
+        cachedAnimationIDS.put(5, EntityAnimationType.MAGIC_CRITICAL_EFFECT);
+
+        cachedAnimations.put(EntityAnimationType.SWING_MAIN_ARM, 0);
+        cachedAnimations.put(EntityAnimationType.TAKE_DAMAGE, 1);
+        cachedAnimations.put(EntityAnimationType.LEAVE_BED, 2);
+        cachedAnimations.put(EntityAnimationType.SWING_OFFHAND, 3);
+        cachedAnimations.put(EntityAnimationType.CRITICAL_EFFECT, 4);
+        cachedAnimations.put(EntityAnimationType.MAGIC_CRITICAL_EFFECT, 5);
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            //a - ID
+            //b - TYPE
+            this.entityID = Reflection.getField(animationClass, int.class, 0).getInt(packet);
+            int animationID = Reflection.getField(animationClass, int.class, 1).getInt(packet);
+            this.type = cachedAnimationIDS.get(animationID);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public Entity getEntity() {
+        return NMSUtils.getEntityById(this.entityID);
+    }
+
+    public int getEntityId() {
+        return this.entityID;
+    }
+
+    public EntityAnimationType getAnimationType() {
+        return type;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        final Object nmsEntity = NMSUtils.getNMSEntity(this.entity);
+        final int index = cachedAnimations.get(type);
+        try {
+            return animationConstructor.newInstance(nmsEntity, index);
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public enum EntityAnimationType {
+        SWING_MAIN_ARM, TAKE_DAMAGE, LEAVE_BED, SWING_OFFHAND, CRITICAL_EFFECT, MAGIC_CRITICAL_EFFECT
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/chat/WrappedPacketOutChat.java

@@ -0,0 +1,247 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.chat;
+
+import io.github.retrooper.packetevents.annotations.Beta;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.UUID;
+
+/**
+ * This wrapper MIGHT not be stable
+ */
+@Beta
+public final class WrappedPacketOutChat extends WrappedPacket implements Sendable {
+    private static Constructor<?> chatClassConstructor;
+    private static Class<?> packetClass, iChatBaseComponentClass, chatSerializerClass, chatMessageTypeEnum;
+    private static Method chatMessageTypeCreatorMethod;
+    //0 = IChatBaseComponent, Byte
+    //1 = IChatBaseComponent, Int
+    //2 = IChatBaseComponent, ChatMessageType
+    //3 = IChatBaseComponent, ChatMessageType, UUID
+    private static byte constructorMode;
+
+    //0 = Byte
+    //1 = Byte, Boolean
+    private static byte chatTypeMessageEnumConstructorMode;
+    private static final HashMap<ChatPosition, Byte> cachedChatPositions = new HashMap<ChatPosition, Byte>();
+    private static final HashMap<Byte, ChatPosition> cachedChatPositionIntegers = new HashMap<Byte, ChatPosition>();
+    private static final HashMap<String, Byte> cachedChatMessageTypeIntegers = new HashMap<String, Byte>();
+    private String message;
+    private ChatPosition chatPosition;
+    private UUID uuid;
+
+    public WrappedPacketOutChat(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutChat(String message, UUID uuid) {
+        this(message, ChatPosition.CHAT, uuid);
+    }
+
+    public WrappedPacketOutChat(String message, ChatPosition chatPosition, UUID uuid) {
+        super();
+        this.uuid = uuid;
+        this.message = message;
+        this.chatPosition = chatPosition;
+    }
+
+    public enum ChatPosition {
+        CHAT, SYSTEM_MESSAGE, GAME_INFO
+    }
+
+
+    public static void load() {
+        try {
+            packetClass = PacketTypeClasses.Server.CHAT;
+            iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        //In 1.8.3+ the ChatSerializer class is declared in the IChatBaseComponent class, so we have to handle that
+        try {
+            chatSerializerClass = NMSUtils.getNMSClass("ChatSerializer");
+        } catch (ClassNotFoundException e) {
+            //That is fine, it is probably a subclass
+            chatSerializerClass = Reflection.getSubClass(iChatBaseComponentClass, "ChatSerializer");
+        }
+
+
+        boolean isVeryOutdated = false;
+        try {
+            chatMessageTypeEnum = NMSUtils.getNMSClass("ChatMessageType");
+        } catch (ClassNotFoundException e) {
+            isVeryOutdated = true;
+        }
+
+        if (!isVeryOutdated) {
+            chatMessageTypeCreatorMethod = Reflection.getMethod(chatMessageTypeEnum, 0, byte.class);
+
+            try {
+                chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, chatMessageTypeEnum);
+                constructorMode = 2;
+            } catch (NoSuchMethodException e) {
+                //Just a much newer version(1.16.x and above right now)
+                try {
+                    chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, chatMessageTypeEnum, UUID.class);
+                    constructorMode = 3;
+                } catch (NoSuchMethodException e2) {
+                    //Failed to resolve the constructor
+                    e2.printStackTrace();
+                }
+            }
+        } else {
+            try {
+                chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, byte.class);
+                constructorMode = 0;
+            } catch (NoSuchMethodException e) {
+                //That is fine, they are most likely on an older version.
+                try {
+                    chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, int.class);
+                    constructorMode = 1;
+                } catch (NoSuchMethodException e2) {
+                    e2.printStackTrace();
+                }
+            }
+        }
+
+        cachedChatPositions.put(ChatPosition.CHAT, (byte) 0);
+        cachedChatPositions.put(ChatPosition.SYSTEM_MESSAGE, (byte) 1);
+        cachedChatPositions.put(ChatPosition.GAME_INFO, (byte) 2);
+
+        cachedChatPositionIntegers.put((byte) 0, ChatPosition.CHAT);
+        cachedChatPositionIntegers.put((byte) 1, ChatPosition.SYSTEM_MESSAGE);
+        cachedChatPositionIntegers.put((byte) 2, ChatPosition.GAME_INFO);
+
+
+        cachedChatMessageTypeIntegers.put("CHAT", (byte) 0);
+        cachedChatMessageTypeIntegers.put("SYSTEM", (byte) 1);
+        cachedChatMessageTypeIntegers.put("GAME_INFO", (byte) 2);
+
+    }
+
+    public static String fromStringToJSON(String message) {
+        return "{\"text\": \"" + "use entity action name: " + message + "\"}";
+    }
+
+    public static String toStringFromIChatBaseComponent(Object obj) {
+        try {
+            return Reflection.getMethod(iChatBaseComponentClass, String.class, 0).invoke(obj).toString();
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object toIChatBaseComponent(String msg) {
+        try {
+            return Reflection.getMethod(chatSerializerClass, 0, String.class).invoke(null, msg);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+    @Override
+    protected void setup() {
+        try {
+            final Object iChatBaseObj = Reflection.getField(packetClass, iChatBaseComponentClass, 0).get(packet);
+
+            final Object contentString = Reflection.getMethod(iChatBaseComponentClass, String.class, 0).invoke(iChatBaseObj);
+
+            this.message = contentString.toString();
+
+            byte chatPosInteger = 0;
+            switch (constructorMode) {
+                case 0:
+                    chatPosInteger = Reflection.getField(packetClass, byte.class, 0).getByte(packet);
+                    break;
+                case 1:
+                    chatPosInteger = (byte) Reflection.getField(packetClass, int.class, 0).getInt(packet);
+                    break;
+                case 2:
+                case 3:
+                    Object chatTypeEnumInstance = Reflection.getField(packetClass, chatMessageTypeEnum, 0).get(packet);
+                    chatPosInteger = cachedChatMessageTypeIntegers.get(chatTypeEnumInstance.toString());
+                    break;
+            }
+            this.chatPosition = cachedChatPositionIntegers.get(chatPosInteger);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        int integerChatPos = cachedChatPositions.get(chatPosition);
+        Object chatMessageTypeInstance = null;
+        if (chatMessageTypeEnum != null) {
+            if (chatTypeMessageEnumConstructorMode == 0) {
+                try {
+                    chatMessageTypeInstance = chatMessageTypeCreatorMethod.invoke(null, (byte) integerChatPos);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+            } else if (chatTypeMessageEnumConstructorMode == 1) {
+                try {
+                    chatMessageTypeInstance = chatMessageTypeCreatorMethod.invoke(null, (byte) integerChatPos);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        switch (constructorMode) {
+            case 0:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), (byte) integerChatPos);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 1:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), integerChatPos);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 2:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), chatMessageTypeInstance);
+                } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 3:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), chatMessageTypeInstance, uuid);
+                } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+                break;
+        }
+        return null;
+    }
+
+    public String getMessage() {
+        return this.message;
+    }
+
+    public ChatPosition getChatPosition() {
+        if(this.chatPosition == null) {
+            this.chatPosition = ChatPosition.CHAT;
+        }
+        return this.chatPosition;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/entity/WrappedPacketOutEntity.java

@@ -0,0 +1,116 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.entity;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.entity.Entity;
+
+import java.lang.reflect.Field;
+
+public class WrappedPacketOutEntity extends WrappedPacket {
+    private static Class<?> packetClass;
+    //Byte = 1.7.10->1.8.8, Int = 1.9->1.15.x, Short = 1.16.x
+    private static byte mode = 0; //byte = 0, int = 1, short = 2
+    private static double dXYZDivisor = 0.0;
+    private int entityID;
+    private double deltaX, deltaY, deltaZ;
+    private byte yaw, pitch;
+    private boolean onGround;
+    public WrappedPacketOutEntity(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.ENTITY;
+
+        Field dxField = Reflection.getField(packetClass, 1);
+        assert dxField != null;
+        if (dxField.equals(Reflection.getField(packetClass, byte.class, 0))) {
+            mode = 0;
+        } else if (dxField.equals(Reflection.getField(packetClass, int.class, 1))) {
+            mode = 1;
+        } else if (dxField.equals(Reflection.getField(packetClass, short.class, 0))) {
+            mode = 2;
+        }
+
+        if (mode == 0) {
+            dXYZDivisor = 32.0;
+        } else {
+            dXYZDivisor = 4096.0;
+        }
+
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.entityID = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+            this.onGround = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
+            int dX = 1, dY = 1, dZ = 1;
+            switch (mode) {
+                case 0:
+                    dX = Reflection.getField(packetClass, byte.class, 0).getByte(packet);
+                    dY = Reflection.getField(packetClass, byte.class, 1).getByte(packet);
+                    dZ = Reflection.getField(packetClass, byte.class, 2).getByte(packet);
+                    this.yaw = Reflection.getField(packetClass, byte.class, 3).getByte(packet);
+                    this.pitch = Reflection.getField(packetClass, byte.class, 4).getByte(packet);
+                    break;
+                case 1:
+                    dX = Reflection.getField(packetClass, int.class, 1).getInt(packet);
+                    dY = Reflection.getField(packetClass, int.class, 2).getInt(packet);
+                    dZ = Reflection.getField(packetClass, int.class, 3).getInt(packet);
+                    this.yaw = Reflection.getField(packetClass, byte.class, 0).getByte(packet);
+                    this.pitch = Reflection.getField(packetClass, byte.class, 1).getByte(packet);
+                    break;
+                case 2:
+                    dX = Reflection.getField(packetClass, short.class, 0).getShort(packet);
+                    dY = Reflection.getField(packetClass, short.class, 1).getShort(packet);
+                    dZ = Reflection.getField(packetClass, short.class, 2).getShort(packet);
+                    this.yaw = Reflection.getField(packetClass, byte.class, 0).getByte(packet);
+                    this.pitch = Reflection.getField(packetClass, byte.class, 1).getByte(packet);
+                    break;
+            }
+            this.deltaX = dX / dXYZDivisor;
+            this.deltaY = dY / dXYZDivisor;
+            this.deltaZ = dZ / dXYZDivisor;
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public byte getPitch() {
+        return pitch;
+    }
+
+    public byte getYaw() {
+        return yaw;
+    }
+
+    public double getDeltaZ() {
+        return deltaZ;
+    }
+
+    public double getDeltaY() {
+        return deltaY;
+    }
+
+    public double getDeltaX() {
+        return deltaX;
+    }
+
+    public Entity getEntity() {
+        return NMSUtils.getEntityById(entityID);
+    }
+
+    public int getEntityId() {
+        return entityID;
+    }
+
+    public boolean isOnGround() {
+        return onGround;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/entityvelocity/WrappedPacketOutEntityVelocity.java

@@ -0,0 +1,129 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.entityvelocity;
+
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.entity.Entity;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class WrappedPacketOutEntityVelocity extends WrappedPacket implements Sendable {
+    private static Constructor<?> velocityConstructor, vec3dConstructor;
+    private static Class<?> velocityClass, vec3dClass;
+    private static boolean isVec3dPresent;
+    private int entityId;
+    private double velocityX, velocityY, velocityZ;
+    private Entity entity;
+    public WrappedPacketOutEntityVelocity(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutEntityVelocity(final Entity entity, final double velocityX, final double velocityY, final double velocityZ) {
+        super();
+        this.entityId = entity.getEntityId();
+        this.entity = entity;
+        this.velocityX = velocityX;
+        this.velocityY = velocityY;
+        this.velocityZ = velocityZ;
+    }
+
+    /**
+     * Velocity Constructor parameter types:
+     * 1.7.10 -&gt; 1.13.2 use int, double, double, double style,
+     * 1.14+ use int, Vec3D style
+     */
+    public static void load() {
+        velocityClass = PacketTypeClasses.Server.ENTITY_VELOCITY;
+        if (version.isHigherThan(ServerVersion.v_1_13_2)) {
+            try {
+                vec3dClass = NMSUtils.getNMSClass("Vec3D");
+            } catch (ClassNotFoundException e) {
+                e.printStackTrace();
+            }
+        }
+
+        try {
+            velocityConstructor = velocityClass.getConstructor(int.class, double.class, double.class, double.class);
+        } catch (NoSuchMethodException e) {
+            //That is fine, just a newer version
+            try {
+                velocityConstructor = velocityClass.getConstructor(int.class, vec3dClass);
+                isVec3dPresent = true;
+                //vec3d constructor
+                vec3dConstructor = vec3dClass.getConstructor(double.class, double.class, double.class);
+            } catch (NoSuchMethodException e2) {
+                e2.printStackTrace();
+            }
+
+        }
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            //ENTITY ID
+            this.entityId = Reflection.getField(velocityClass, int.class, 0).getInt(packet);
+
+            int x = Reflection.getField(velocityClass, int.class, 1).getInt(packet);
+            int y = Reflection.getField(velocityClass, int.class, 2).getInt(packet);
+            int z = Reflection.getField(velocityClass, int.class, 3).getInt(packet);
+
+            //VELOCITY XYZ
+            this.velocityX = x / 8000.0D;
+            this.velocityY = y / 8000.0D;
+            this.velocityZ = z / 8000.0D;
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public int getEntityId() {
+        return entityId;
+    }
+
+    public Entity getEntity() {
+        if (entity == null) {
+            return NMSUtils.getEntityById(this.entityId);
+        } else {
+            return entity;
+        }
+    }
+
+    public double getVelocityX() {
+        return velocityX;
+    }
+
+    public double getVelocityY() {
+        return velocityY;
+    }
+
+    public double getVelocityZ() {
+        return velocityZ;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        if (!isVec3dPresent) {
+            try {
+                return velocityConstructor.newInstance(entityId, velocityX, velocityY, velocityZ);
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        } else {
+            try {
+                return velocityConstructor.newInstance(entityId, vec3dConstructor.newInstance(velocityX, velocityY, velocityZ));
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        }
+        return null;
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/keepalive/WrappedPacketOutKeepAlive.java

@@ -0,0 +1,91 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.keepalive;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutKeepAlive extends WrappedPacket implements Sendable {
+    private static Class<?> packetClass;
+    private static Constructor<?> keepAliveConstructor;
+    private static boolean integerMode;
+    private long id;
+
+    public WrappedPacketOutKeepAlive(Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutKeepAlive(long id) {
+        super();
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.KEEP_ALIVE;
+        integerMode = Reflection.getField(packetClass, int.class, 0) != null;
+
+        if (integerMode) {
+            try {
+                keepAliveConstructor = packetClass.getConstructor(int.class);
+            } catch (NoSuchMethodException e) {
+                e.printStackTrace();
+            }
+        } else {
+            try {
+                keepAliveConstructor = packetClass.getConstructor(long.class);
+            } catch (NoSuchMethodException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    @Override
+    protected void setup() {
+        if (!integerMode) {
+            try {
+                this.id = Reflection.getField(packetClass, long.class, 0).getLong(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        } else {
+            try {
+                this.id = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * You can cast this long to an integer if you are using 1.7.10 -&gt; 1.12.2!
+     * In 1.13.2 -&gt; 1.16.2 a long is sent
+     *
+     * @return Keep Alive ID
+     */
+    public long getId() {
+        return id;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        if (integerMode) {
+            try {
+                return keepAliveConstructor.newInstance((int) id);
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        } else {
+            try {
+                return keepAliveConstructor.newInstance(id);
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/kickdisconnect/WrappedPacketOutKickDisconnect.java

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.kickdisconnect;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class WrappedPacketOutKickDisconnect extends WrappedPacket implements Sendable {
+    private static Class<?> packetClass, iChatBaseComponentClass;
+    private static Constructor<?> kickDisconnectConstructor;
+    private String kickMessage;
+
+    public WrappedPacketOutKickDisconnect(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutKickDisconnect(final String kickMessage) {
+        super();
+        this.kickMessage = kickMessage;
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.KICK_DISCONNECT;
+        try {
+            iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            kickDisconnectConstructor = packetClass.getConstructor(iChatBaseComponentClass);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.kickMessage = WrappedPacketOutChat.toStringFromIChatBaseComponent(Reflection.getField(packetClass, iChatBaseComponentClass, 0).get(packet));
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public String getKickMessage() {
+        return kickMessage;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return kickDisconnectConstructor.newInstance(WrappedPacketOutChat.toIChatBaseComponent("{\"text\": \"" + kickMessage + "\"}"));
+        } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/position/WrappedPacketOutPosition.java

@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.position;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+public final class WrappedPacketOutPosition extends WrappedPacket {
+    private static Class<?> packetClass;
+    private double x;
+    private double y;
+    private double z;
+    private float yaw;
+    private float pitch;
+
+    public WrappedPacketOutPosition(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.POSITION;
+    }
+
+    @Override
+    protected void setup() {
+        //TODO boolean onGround and flags
+        try {
+            this.x = Reflection.getField(packetClass, double.class, 0).getDouble(packet);
+            this.y = Reflection.getField(packetClass, double.class, 1).getDouble(packet);
+            this.z = Reflection.getField(packetClass, double.class, 2).getDouble(packet);
+
+            this.yaw = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
+            this.pitch = Reflection.getField(packetClass, float.class, 1).getFloat(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public double getX() {
+        return x;
+    }
+
+    public double getY() {
+        return y;
+    }
+
+    public double getZ() {
+        return z;
+    }
+
+    public float getYaw() {
+        return yaw;
+    }
+
+    public float getPitch() {
+        return pitch;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/transaction/WrappedPacketOutTransaction.java

@@ -0,0 +1,75 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.transaction;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutTransaction extends WrappedPacket implements Sendable {
+    private static Class<?> packetClass;
+    private static Constructor<?> packetConstructor;
+    private int windowId;
+    private short actionNumber;
+    private boolean accepted;
+    public WrappedPacketOutTransaction(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutTransaction(final int windowId, final short actionNumber, final boolean accepted) {
+        super();
+        this.windowId = windowId;
+        this.actionNumber = actionNumber;
+        this.accepted = accepted;
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.TRANSACTION;
+
+        try {
+            packetConstructor = packetClass.getConstructor(int.class, short.class, boolean.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.windowId = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+            this.actionNumber = Reflection.getField(packetClass, short.class, 0).getShort(packet);
+            this.accepted = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public int getWindowId() {
+        return windowId;
+    }
+
+    public short getActionNumber() {
+        return actionNumber;
+    }
+
+    public boolean isAccepted() {
+        return accepted;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(windowId, actionNumber, accepted);
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/updatehealth/WrappedPacketOutUpdateHealth.java

@@ -0,0 +1,80 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.packetwrappers.out.updatehealth;
+
+import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class WrappedPacketOutUpdateHealth extends WrappedPacket implements Sendable {
+    private static Class<?> packetClass;
+    private static Constructor<?> packetConstructor;
+    private float health, foodSaturation;
+    private int food;
+    public WrappedPacketOutUpdateHealth(final Object packet) {
+        super(packet);
+    }
+
+    /**
+     * See https://wiki.vg/Protocol#Update_Health
+     *
+     * @param health 0 or less = dead, 20 = full HP
+     * @param food 0–20
+     * @param foodSaturation Seems to vary from 0.0 to 5.0 in integer increments
+     */
+    public WrappedPacketOutUpdateHealth(final float health, final int food, final float foodSaturation) {
+        super();
+        this.health = health;
+        this.food = food;
+        this.foodSaturation = foodSaturation;
+    }
+
+    public static void load() {
+        packetClass = PacketTypeClasses.Server.UPDATE_HEALTH;
+
+        try {
+            packetConstructor = packetClass.getConstructor(float.class, int.class, float.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.health = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
+            this.foodSaturation = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
+            this.food = Reflection.getField(packetClass, int.class, 0).getInt(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public float getHealth() {
+        return health;
+    }
+
+    public float getFoodSaturation() {
+        return foodSaturation;
+    }
+
+    public int getFood() {
+        return food;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(health, food, foodSaturation);
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/reflectionutils/Reflection.java

@@ -0,0 +1,192 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.reflectionutils;
+
+
+import io.github.retrooper.packetevents.reflectionutils.fielddata.FieldWithIndex;
+import io.github.retrooper.packetevents.reflectionutils.fielddata.FieldWithName;
+import io.github.retrooper.packetevents.reflectionutils.fielddata.FieldWithTypeAndIndex;
+import io.github.retrooper.packetevents.reflectionutils.methoddata.MethodWithIndexAndParams;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.HashMap;
+
+/**
+ * @author retrooper
+ */
+public final class Reflection {
+    private static final HashMap<Class<?>, Field[]> cachedFields = new HashMap<Class<?>, Field[]>();
+    private static final HashMap<Class<?>, Method[]> cachedMethods = new HashMap<Class<?>, Method[]>();
+    private static final HashMap<Class<?>, Class<?>[]> cachedSubclasses = new HashMap<Class<?>, Class<?>[]>();
+
+
+    //FIELDS
+    private static final HashMap<FieldWithName, Field> fieldWithNameHashMap = new HashMap<FieldWithName, Field>();
+    private static final HashMap<FieldWithTypeAndIndex, Field> fieldWithTypeAndIndexHashMap = new HashMap<FieldWithTypeAndIndex, Field>();
+    private static final HashMap<FieldWithIndex, Field> fieldWithIndexHashMap = new HashMap<FieldWithIndex, Field>();
+    private static final HashMap<MethodWithIndexAndParams, Method> methodWithIndexAndParamsHashMap = new HashMap<MethodWithIndexAndParams, Method>();
+
+    public static Field[] getFields(final Class<?> cls) {
+        if (cachedFields.containsKey(cls)) {
+            return cachedFields.get(cls);
+        } else {
+            final Field[] fields = cls.getDeclaredFields();
+            for (final Field f : fields) {
+                f.setAccessible(true);
+            }
+            cachedFields.put(cls, fields);
+            return fields;
+        }
+    }
+
+    public static Field getField(final Class<?> cls, final String name) {
+        final FieldWithName fwn = new FieldWithName(cls, name);
+        if (!fieldWithNameHashMap.containsKey(fwn)) {
+            for (final Field f : getFields(cls)) {
+                if (f.getName().equals(name)) {
+                    fieldWithNameHashMap.put(fwn, f);
+                    return f;
+                }
+            }
+        } else {
+            return fieldWithNameHashMap.get(fwn);
+        }
+        return null;
+    }
+
+    public static Field getField(final Class<?> cls, final Class<?> dataType, final int index) {
+        final FieldWithTypeAndIndex fwtai = new FieldWithTypeAndIndex(cls, dataType, index);
+        if (!fieldWithTypeAndIndexHashMap.containsKey(fwtai)) {
+            int i = 0;
+            for (final Field f : getFields(cls)) {
+                if (f.getType().equals(dataType)) {
+                    if (i++ == index) {
+                        fieldWithTypeAndIndexHashMap.put(fwtai, f);
+                        return f;
+                    }
+                }
+            }
+        } else {
+            return fieldWithTypeAndIndexHashMap.get(fwtai);
+        }
+        return null;
+    }
+
+    public static Field getField(final Class<?> cls, final int index) {
+        final FieldWithIndex fwi = new FieldWithIndex(cls, index);
+        if (!fieldWithIndexHashMap.containsKey(fwi)) {
+            final Field[] fields = getFields(cls);
+            if (fields.length <= index) {
+                return null;
+            }
+            final Field field = fields[index];
+            fieldWithIndexHashMap.put(fwi, field);
+            return field;
+        } else {
+            return fieldWithIndexHashMap.get(fwi);
+        }
+    }
+
+    //METHODS
+    public static Method[] getMethods(final Class<?> cls) {
+        if (cachedMethods.containsKey(cls)) {
+            return cachedMethods.get(cls);
+        } else {
+            final Method[] methods = cls.getDeclaredMethods();
+            for (final Method m : methods) {
+                m.setAccessible(true);
+            }
+            cachedMethods.put(cls, methods);
+            return methods;
+        }
+    }
+
+    public static Method getMethod(final Class<?> cls, final int index, final Class<?>... params) {
+        final MethodWithIndexAndParams mwiap = new MethodWithIndexAndParams(cls, index, params);
+        if (!methodWithIndexAndParamsHashMap.containsKey(mwiap)) {
+            int i = 0;
+            for (final Method m : getMethods(cls)) {
+                if (Arrays.equals(m.getParameterTypes(), params) && index == i++) {
+                    return m;
+                }
+            }
+        } else {
+            return methodWithIndexAndParamsHashMap.get(mwiap);
+        }
+        return null;
+    }
+
+    //THE REST LATER
+
+    public static Method getMethod(final Class<?> cls, final String name, Class<?> returning, Class<?>... params) {
+        for (final Method m : getMethods(cls)) {
+            if (m.getName().equals(name) && Arrays.equals(m.getParameterTypes(), params) && m.getReturnType().equals(returning)) {
+                return m;
+            }
+        }
+        return null;
+    }
+
+    public static Method getMethod(final Class<?> cls, final String name, final int index) {
+        int i = 0;
+        for (final Method m : getMethods(cls)) {
+            if (m.getName().equals(name) && index == i++) {
+                return m;
+            }
+        }
+        return null;
+    }
+
+    public static Method getMethod(final Class<?> cls, final Class<?> returning, final int index) {
+        int i = 0;
+        for (final Method m : getMethods(cls)) {
+            if (m.getReturnType().equals(returning) && index == i++) {
+                return m;
+            }
+        }
+        return null;
+    }
+
+    public static Method getMethod(final Class<?> cls, final String name, final Class<?> returning) {
+        int i = 0;
+        for (final Method m : getMethods(cls)) {
+            if (m.getName().equals(name) && m.getReturnType().equals(returning)) {
+                return m;
+            }
+        }
+        return null;
+    }
+
+    public static Class<?>[] getSubClasses(final Class<?> cls) {
+        if (cachedSubclasses.containsKey(cls)) {
+            return cachedSubclasses.get(cls);
+        } else {
+            final Class<?>[] subclasses = cls.getDeclaredClasses();
+            cachedSubclasses.put(cls, subclasses);
+            return subclasses;
+        }
+    }
+
+    public static Class<?> getSubClass(final Class<?> cls, final String name) {
+        for (final Class<?> subclass : getSubClasses(cls)) {
+            if (subclass.getSimpleName().equals(name)) {
+                return subclass;
+            }
+        }
+        return null;
+    }
+
+    public static Class<?> getSubClass(final Class<?> cls, final int index) {
+        final Class<?>[] subclasses = getSubClasses(cls);
+        for (int i = 0; i < index + 1; i++) {
+            final Class<?> c = subclasses[i];
+            if (i == index) {
+                return c;
+            }
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/reflectionutils/fielddata/FieldWithIndex.java

@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.reflectionutils.fielddata;
+
+import java.util.Objects;
+
+public class FieldWithIndex {
+    private final Class<?> cls;
+    private final int index;
+
+    public FieldWithIndex(Class<?> cls, int index) {
+        this.cls = cls;
+        this.index = index;
+    }
+
+    public Class<?> getCls() {
+        return cls;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        FieldWithIndex that = (FieldWithIndex) o;
+        return index == that.index &&
+                Objects.equals(cls, that.cls);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cls, index);
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/reflectionutils/fielddata/FieldWithName.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.reflectionutils.fielddata;
+
+import java.util.Objects;
+
+public class FieldWithName {
+
+    private final Class<?> cls;
+    private final String name;
+
+    public FieldWithName(Class<?> cls, String name) {
+        this.cls = cls;
+        this.name = name;
+    }
+
+    public Class<?> getCls() {
+        return cls;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        FieldWithName that = (FieldWithName) o;
+        return name.equals(that.name) &&
+                Objects.equals(cls, that.cls);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cls, name);
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/reflectionutils/fielddata/FieldWithTypeAndIndex.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.reflectionutils.fielddata;
+
+import java.util.Objects;
+
+public class FieldWithTypeAndIndex {
+    private final Class<?> cls, type;
+    private final int index;
+
+    public FieldWithTypeAndIndex(Class<?> cls, Class<?> type, int index) {
+        this.cls = cls;
+        this.type = type;
+        this.index = index;
+    }
+
+    public Class<?> getCls() {
+        return cls;
+    }
+
+    public Class<?> getType() {
+        return type;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        FieldWithTypeAndIndex that = (FieldWithTypeAndIndex) o;
+        return index == that.index &&
+                Objects.equals(cls, that.cls) &&
+                Objects.equals(type, that.type);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cls, type, index);
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/reflectionutils/methoddata/MethodWithIndexAndParams.java

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.reflectionutils.methoddata;
+
+import java.util.Objects;
+
+public class MethodWithIndexAndParams {
+    private final Class<?> cls;
+    private final int index;
+    private final Class<?>[] params;
+
+    public MethodWithIndexAndParams(Class<?> cls, int index, Class<?>[] params) {
+        this.cls = cls;
+        this.index = index;
+        this.params = params;
+    }
+
+    public Class<?> getCls() {
+        return cls;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+
+    public Class<?>[] getParams() {
+        return params;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        MethodWithIndexAndParams that = (MethodWithIndexAndParams) o;
+        return index == that.index &&
+                Objects.equals(cls, that.cls) &&
+                Objects.equals(params, that.params);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cls, params, index);
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/settings/PacketEventsSettings.java

@@ -0,0 +1,99 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.settings;
+
+import io.github.retrooper.packetevents.enums.ServerVersion;
+
+import java.util.Random;
+
+public class PacketEventsSettings {
+
+    private ServerVersion defaultServerVersion;
+    private String identifier = "";
+    private boolean autoResolveClientProtocolVersion;
+    private boolean uninjectAsync = false;
+
+    /**
+     * If PacketEvents fails to detect your server version, it will use the recommended version
+     *
+     * @return Recommended version
+     */
+    public ServerVersion getDefaultServerVersion() {
+        return this.defaultServerVersion;
+    }
+
+    /**
+     * Set the default version
+     *
+     * @param version ServerVersion
+     */
+    public void setDefaultServerVersion(final ServerVersion version) {
+        this.defaultServerVersion = version;
+    }
+
+    /**
+     * The identifier is a unique string that is used to generate a player's handler name.
+     * Two plugins cannot have the same handler name.
+     * If you manually set the identifier using its setter '#setIdentifier(String)'.
+     * We will use that identifier to generate each player's handler name.
+     * If you do not set the identifier manually, we automatically generate one for you.
+     * @return stored identifier or new generated identifier
+     */
+    public String getIdentifier() {
+        if (this.identifier.isEmpty()) {
+            String alphabet = "abcdefghijklmnopqrstuvwxyz";
+            StringBuilder sb = new StringBuilder();
+            Random random = new Random();
+            while (sb.length() < 13) {
+                int index = (int) (random.nextFloat() * alphabet.length());
+                sb.append(alphabet.charAt(index));
+            }
+
+            this.identifier = sb.toString();
+        }
+        return this.identifier;
+    }
+
+    /**
+     * Set a unique Identifier (Usually something that represents your plugin, For example: MyPluginPacketHandler)
+     * If another present plugin uses the same Identifier, It will cause incompatibilities.
+     *
+     * @param identifier Unique string
+     * @deprecated This method is deprecated as you no longer need to set an identifier,
+     * a unique identifier is already automatically generated for you.
+     */
+    @Deprecated
+    public void setIdentifier(final String identifier) {
+        this.identifier = identifier;
+    }
+
+    public boolean doAutoResolveClientProtocolVersion() {
+        return autoResolveClientProtocolVersion;
+    }
+
+    /**
+     * If PacketEvents fails to detect a client's version
+     * (when ViaVersion, ProtocolLib or ProtocolSupport can't be found on the server),
+     * should it assume that the client is using the same version as the server?
+     * Returns ACCESS_FAILURE if this is set to FALSE(default value is false).
+     * @param autoResolveClientProtocolVersion boolean
+     */
+    public void setDoAutoResolveClientProtocolVersion(boolean autoResolveClientProtocolVersion) {
+        this.autoResolveClientProtocolVersion = autoResolveClientProtocolVersion;
+    }
+
+    /**
+     * Would you like PacketEvents to Uninject players Asynchronously?
+     * WARNING! This might make reloading unsupported
+     *
+     * @param uninjectAsync boolean
+     */
+    public void setUninjectAsync(boolean uninjectAsync) {
+        this.uninjectAsync = uninjectAsync;
+    }
+
+    public boolean isUninjectAsync() {
+        return this.uninjectAsync;
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/BlockIteratorUtils.java

@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils;
+
+import org.bukkit.Location;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+import org.bukkit.util.BlockIterator;
+
+public class BlockIteratorUtils {
+    public static Block getBlockLookingAt(final Player player, final int distance) {
+        final Location location = player.getEyeLocation();
+        final BlockIterator blocksToAdd = new BlockIterator(location, 0.0D, distance);
+        Block block = null;
+        while (blocksToAdd.hasNext()) {
+            block = blocksToAdd.next();
+        }
+        return block;
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/NMSUtils.java

@@ -0,0 +1,218 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.nms_entityfinder.EntityFinderUtils;
+import org.bukkit.World;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public final class NMSUtils {
+    public static ServerVersion version;
+    private static final String nmsDir = ServerVersion.getNMSDirectory();
+    private static final String obcDir = ServerVersion.getOBCDirectory();
+    public static String nettyPrefix;
+    public static Class<?> minecraftServerClass, craftWorldsClass,
+            packetClass, entityPlayerClass, playerConnectionClass,
+            craftPlayerClass, serverConnectionClass, craftEntityClass,
+            craftItemStack, nmsItemStackClass, networkManagerClass, nettyChannelClass;
+    private static Method getCraftWorldHandleMethod, getServerConnection, getCraftPlayerHandle, getCraftEntityHandle, sendPacketMethod, asBukkitCopy;
+    private static Field entityPlayerPingField, playerConnectionField;
+
+    public static void load() {
+        try {
+            nettyPrefix = "io.netty";
+            Class.forName("io.netty.channel.Channel");
+        } catch (ClassNotFoundException e) {
+            nettyPrefix = "net.minecraft.util.io.netty";
+        }
+        try {
+            nettyChannelClass = getNettyClass("channel.Channel");
+            minecraftServerClass = getNMSClass("MinecraftServer");
+            craftWorldsClass = getOBCClass("CraftWorld");
+            craftPlayerClass = getOBCClass("entity.CraftPlayer");
+            entityPlayerClass = getNMSClass("EntityPlayer");
+            packetClass = getNMSClass("Packet");
+            playerConnectionClass = getNMSClass("PlayerConnection");
+            serverConnectionClass = getNMSClass("ServerConnection");
+            craftEntityClass = getOBCClass("entity.CraftEntity");
+            craftItemStack = getOBCClass("inventory.CraftItemStack");
+            nmsItemStackClass = getNMSClass("ItemStack");
+            networkManagerClass = getNMSClass("NetworkManager");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        //METHODS
+        try {
+            getCraftWorldHandleMethod = craftWorldsClass.getMethod("getHandle");
+            getCraftPlayerHandle = craftPlayerClass.getMethod("getHandle");
+            getCraftEntityHandle = craftEntityClass.getMethod("getHandle");
+            sendPacketMethod = playerConnectionClass.getMethod("sendPacket", packetClass);
+            getServerConnection = minecraftServerClass.getMethod("getServerConnection");
+            asBukkitCopy = craftItemStack.getMethod("asBukkitCopy", nmsItemStackClass);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+
+        try {
+            entityPlayerPingField = entityPlayerClass.getField("ping");
+            playerConnectionField = entityPlayerClass.getField("playerConnection");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static Object getMinecraftServerInstance() throws InvocationTargetException, IllegalAccessException {
+        return Reflection.getMethod(minecraftServerClass, "getServer", 0).invoke(null);
+    }
+
+    public static double[] recentTPS() throws IllegalAccessException, InvocationTargetException {
+        final Object minecraftServerObj = getMinecraftServerInstance();
+        return (double[]) Reflection.getField(minecraftServerClass, double[].class, 0).get(minecraftServerObj);
+    }
+
+    public static Class<?> getNMSClass(String name) throws ClassNotFoundException {
+        return Class.forName(nmsDir + "." + name);
+    }
+
+    public static Class<?> getNMSClassWithoutException(String name) {
+        try {
+            return getNMSClass(name);
+        } catch (ClassNotFoundException e) {
+            return null;
+        }
+
+    }
+
+    public static Class<?> getOBCClass(String name) throws ClassNotFoundException {
+        return Class.forName(obcDir + "." + name);
+    }
+
+    public static Class<?> getNettyClass(String name) throws ClassNotFoundException {
+        return Class.forName(nettyPrefix + "." + name);
+    }
+
+    public static String getChannelFutureListFieldName() {
+        if (version.isLowerThan(ServerVersion.v_1_8))
+            return "e";
+        if (version.isLowerThan(ServerVersion.v_1_13))
+            return "g";
+        return "f";
+    }
+
+    @Nullable
+    public static Entity getEntityById(final int id) {
+        return EntityFinderUtils.getEntityById(id);
+    }
+
+    @Nullable
+    public static Entity getEntityByIdWithWorld(final World world, final int id) {
+        return EntityFinderUtils.getEntityByIdWithWorld(world, id);
+    }
+
+    public static Object getNMSEntity(final Entity entity) {
+        final Object craftEntity = craftEntityClass.cast(entity);
+        try {
+            return getCraftEntityHandle.invoke(craftEntity);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object getCraftPlayer(final Player player) {
+        return craftPlayerClass.cast(player);
+    }
+
+    public static Object getEntityPlayer(final Player player) {
+        try {
+            return getCraftPlayerHandle.invoke(getCraftPlayer(player));
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object getPlayerConnection(final Player player) {
+        try {
+            return playerConnectionField.get(getEntityPlayer(player));
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object getNetworkManager(final Player player) {
+        try {
+            return Reflection.getField(playerConnectionClass, networkManagerClass, 0).get(getPlayerConnection(player));
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object getChannel(final Player player) {
+        try {
+            return Reflection.getField(networkManagerClass, nettyChannelClass, 0).get(getNetworkManager(player));
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static int getPlayerPing(final Player player) {
+        Object entityPlayer = getEntityPlayer(player);
+        try {
+            return entityPlayerPingField.getInt(entityPlayer);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return -1;
+    }
+
+    public static ItemStack toBukkitItemStack(final Object nmsItemstack) {
+        try {
+            return (ItemStack) asBukkitCopy.invoke(null, nmsItemstack);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static void sendSendableWrapper(final Player player, final Sendable sendable) {
+        NMSUtils.sendNMSPacket(player, sendable.asNMSPacket());
+    }
+
+    public static void sendNMSPacket(final Player player, final Object nmsPacket) {
+        Object entityPlayer = getEntityPlayer(player);
+        Object playerConnection = null;
+        try {
+            playerConnection = playerConnectionField.get(entityPlayer);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            sendPacketMethod.invoke(playerConnection, nmsPacket);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+    }
+
+
+    public static String getServerConnectionFieldName() {
+        return "p";
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/api/PlayerUtils.java

@@ -0,0 +1,73 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.api;
+
+import io.github.retrooper.packetevents.enums.ClientVersion;
+import io.github.retrooper.packetevents.handler.NettyPacketHandler;
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.settings.PacketEventsSettings;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
+import org.bukkit.entity.Player;
+
+import java.util.HashMap;
+import java.util.UUID;
+
+public final class PlayerUtils {
+
+    private final HashMap<UUID, ClientVersion> clientVersionsMap = new HashMap<UUID, ClientVersion>();
+    private final PacketEventsSettings settings = new PacketEventsSettings();
+
+    public int getPing(final Player player) {
+        return NMSUtils.getPlayerPing(player);
+    }
+
+    public ClientVersion getClientVersion(final UUID uuid) {
+        return clientVersionsMap.get(uuid);
+    }
+
+    public int getProtocolVersion(Player player) {
+        return VersionLookupUtils.getProtocolVersion(player);
+    }
+
+    public ClientVersion getClientVersion(final Player player) {
+        return getClientVersion(player.getUniqueId());
+    }
+
+    public void setClientVersion(final UUID uuid, final ClientVersion version) {
+        clientVersionsMap.put(uuid, version);
+    }
+
+    public void setClientVersion(final Player player, final ClientVersion version) {
+        setClientVersion(player.getUniqueId(), version);
+    }
+
+    public void clearClientVersion(final UUID uuid) {
+        clientVersionsMap.remove(uuid);
+    }
+
+    public void clearClientVersion(final Player player) {
+        clearClientVersion(player.getUniqueId());
+    }
+
+    public void injectPlayer(final Player player) {
+        NettyPacketHandler.injectPlayer(player);
+    }
+
+    public void uninjectPlayer(final Player player) {
+        if (settings.isUninjectAsync()) {
+            NettyPacketHandler.uninjectPlayerAsync(player);
+        } else {
+            NettyPacketHandler.uninjectPlayer(player);
+        }
+    }
+
+    public void sendPacket(final Player player, final Sendable sendable) {
+        NMSUtils.sendSendableWrapper(player, sendable);
+    }
+
+    public void sendNMSPacket(final Player player, Object nmsPacket) {
+        NMSUtils.sendNMSPacket(player, nmsPacket);
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/api/ServerUtils.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.api;
+
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.enums.SystemOS;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.InvocationTargetException;
+
+public final class ServerUtils {
+
+    public ServerVersion getVersion() {
+        return ServerVersion.getVersion();
+    }
+
+    public double[] getRecentTPS() {
+        double[] tpsArray = new double[0];
+        try {
+            tpsArray = NMSUtils.recentTPS();
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return tpsArray;
+    }
+
+    public double getCurrentTPS() {
+        return getRecentTPS()[0];
+    }
+
+    public SystemOS getPlatform() {
+        return SystemOS.getOperatingSystem();
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/nms_entityfinder/EntityFinderUtils.java

@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.nms_entityfinder;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+import org.bukkit.entity.Entity;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public final class EntityFinderUtils {
+    @Nullable
+    public static ServerVersion version;
+    private static Class<?> worldServerClass;
+    private static Class<?> craftWorldClass;
+    private static Class<?> entityClass;
+    private static Method getEntityByIdMethod;
+    private static Method craftWorldGetHandle;
+    private static Method getBukkitEntity;
+
+    private static boolean isServerVersion_v_1_8_x;
+
+    public static void load() {
+        isServerVersion_v_1_8_x = version.isHigherThan(ServerVersion.v_1_7_10) && version.isLowerThan(ServerVersion.v_1_9);
+        try {
+            worldServerClass = NMSUtils.getNMSClass("WorldServer");
+            craftWorldClass = NMSUtils.getOBCClass("CraftWorld");
+            entityClass = NMSUtils.getNMSClass("Entity");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            getEntityByIdMethod = worldServerClass.getMethod(getEntityByIDMethodName(), int.class);
+            craftWorldGetHandle = craftWorldClass.getMethod("getHandle");
+            getBukkitEntity = entityClass.getMethod("getBukkitEntity");
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static Entity getEntityById(final int id) {
+        for (final World world : Bukkit.getWorlds()) {
+            final Entity entity = getEntityByIdWithWorld(world, id);
+            if (entity != null) {
+                return entity;
+            }
+        }
+        return null;
+    }
+
+    @Nullable
+    public static Entity getEntityByIdWithWorld(final World world, final int id) {
+        if (world == null) {
+            return null;
+        }
+        else if(craftWorldClass == null) {
+            System.out.println("Craft World class is null wtf");
+            return null;
+        }
+        Object craftWorld = craftWorldClass.cast(world);
+
+        Object worldServer = null;
+        try {
+            worldServer = craftWorldGetHandle.invoke(craftWorld);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+
+        Object nmsEntity = null;
+        try {
+            nmsEntity = getEntityByIdMethod.invoke(worldServer, id);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        if (nmsEntity == null) {
+            return null;
+        }
+        try {
+            return (Entity) getBukkitEntity.invoke(nmsEntity);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    /**
+     * This is the name of the method that returns the NMS entity when you pass in its ID.
+     * On 1.8-1.8.8 the function name is called 'a', on 1.7.10 and 1.9 and above the name is called 'getEntity'.
+     * @return entity by ID method name
+     */
+    public static String getEntityByIDMethodName() {
+        if (isServerVersion_v_1_8_x) {
+            return "a";
+        }
+        return "getEntity";
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/vector/Vector3d.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.vector;
+
+public final class Vector3d {
+    public double x, y, z;
+
+    public Vector3d(final double x, final double y, final double z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    @Override
+    public String toString() {
+        return "X: " + x + ", Y: " + y + ", Z: " + z;
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/vector/Vector3f.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.vector;
+
+public final class Vector3f {
+    public float x, y, z;
+
+    public Vector3f(final float x, final float y, final float z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    @Override
+    public String toString() {
+        return "X: " + x + ", Y: " + y + ", Z: " + z;
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/vector/Vector3i.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.vector;
+
+public final class Vector3i {
+    public int x, y, z;
+
+    public Vector3i(final int x, final int y, final int z) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    @Override
+    public String toString() {
+        return "X: " + x + ", Y: " + y + ", Z: " + z;
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ProtocolLibAPIAccessor.java

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import com.comphenix.protocol.ProtocolLibrary;
+import org.bukkit.entity.Player;
+
+class ProtocolLibAPIAccessor {
+    public static int getProtocolVersion(final Player player) {
+        return ProtocolLibrary.getProtocolManager().getProtocolVersion(player);
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ProtocolLibUtils.java

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+public class ProtocolLibUtils {
+    public static boolean isAvailable() {
+        return Bukkit.getPluginManager().isPluginEnabled("ProtocolLib");
+    }
+
+    public static int getProtocolVersion(final Player player) {
+        return ProtocolLibAPIAccessor.getProtocolVersion(player);
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ProtocolSupportAPIAccessor.java

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import org.bukkit.entity.Player;
+import protocolsupport.api.ProtocolSupportAPI;
+
+class ProtocolSupportAPIAccessor {
+    public static int getProtocolVersion(final Player player) {
+        return ProtocolSupportAPI.getProtocolVersion(player).getId();
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ProtocolSupportUtils.java

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+public class ProtocolSupportUtils {
+    public static boolean isAvailable() {
+        return Bukkit.getPluginManager().isPluginEnabled("ProtocolSupport");
+    }
+
+    public static int getProtocolVersion(final Player player) {
+        return ProtocolSupportAPIAccessor.getProtocolVersion(player);
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ProtocolVersionAccessor_v_1_7.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2020 retrooper
+ */
+
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import org.bukkit.entity.Player;
+
+public class ProtocolVersionAccessor_v_1_7 {
+    public static int getProtocolVersion(Player player) {
+        net.minecraft.server.v1_7_R4.EntityPlayer entityPlayer = ((org.bukkit.craftbukkit.v1_7_R4.entity.CraftPlayer) player).getHandle();
+        return entityPlayer.playerConnection.networkManager.getVersion();
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/VersionLookupUtils.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import org.bukkit.entity.Player;
+
+public class VersionLookupUtils {
+
+    private static byte protocolAccessMode;
+
+    public static void load() {
+        protocolAccessMode = (byte) (ViaUtils.isAvailable() ?
+                0 : ProtocolSupportUtils.isAvailable() ?
+                1 : ProtocolLibUtils.isAvailable() ?
+                2 : PacketEvents.getAPI().getServerUtils().getVersion() == ServerVersion.v_1_7_10 ?
+                3 : -1);
+
+    }
+
+    /**
+     * If ViaVersion is present, we get the protocol version with the ViaVersion API.
+     * If ProtocolSupport is present, we get the protocol version with the ProtocolSupport API.
+     * If ProtocolLib is present, we get the protocol version with the ProtocolLib API.
+     * Otherwise return -1
+     *
+     * @param player target player
+     * @return protocol version of the player if ViaVersion or ProtocolSupport or ProtocolLib is present. Otherwise -1
+     */
+    public static int getProtocolVersion(final Player player) {
+        switch(protocolAccessMode) {
+            case 0:
+                return ViaUtils.getProtocolVersion(player);
+            case 1:
+                return ProtocolSupportUtils.getProtocolVersion(player);
+            case 2:
+                return ProtocolLibUtils.getProtocolVersion(player);
+            case 3:
+                return ProtocolVersionAccessor_v_1_7.getProtocolVersion(player);
+            default:
+                return -1;
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ViaAPIAccessor.java

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import org.bukkit.entity.Player;
+import us.myles.ViaVersion.api.Via;
+
+import java.util.UUID;
+
+class ViaAPIAccessor {
+    public static int getProtocolVersion(final Player player) {
+        return getProtocolVersion(player.getUniqueId());
+    }
+
+    public static int getProtocolVersion(final UUID uuid) {
+        return Via.getAPI().getPlayerVersion(uuid);
+    }
+}

src/main/java/io/github/retrooper/packetevents/utils/versionlookup/ViaUtils.java

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) 2020 retrooper
+ */
+package io.github.retrooper.packetevents.utils.versionlookup;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+
+public class ViaUtils {
+    public static int getProtocolVersion(final Player player) {
+        return ViaAPIAccessor.getProtocolVersion(player);
+    }
+
+    public static boolean isAvailable() {
+        return Bukkit.getPluginManager().isPluginEnabled("ViaVersion");
+    }
+}

src/main/java/me/purplex/packetevents/Main.java

@@ -1,72 +0,0 @@
-package me.purplex.packetevents;
-
-import com.comphenix.tinyprotocol.*;
-import io.netty.channel.Channel;
-import me.purplex.packetevents.events.packetevent.PacketSendEvent;
-import me.purplex.packetevents.events.packetevent.ServerTickEvent;
-import me.purplex.packetevents.events.packetevent.PacketReceiveEvent;
-import me.purplex.packetevents.example.TestExample;
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-import org.bukkit.event.*;
-import org.bukkit.plugin.java.JavaPlugin;
-
-public class Main extends JavaPlugin implements Listener {
-
-    private static Main instance;
-    public TinyProtocol protocol;
-    @Override
-    public void onEnable() {
-        instance = this;
-        Bukkit.getPluginManager().registerEvents(this, this);
-        //PacketEvents.getPacketManager().registerPacketListener(new TestExample());
-        protocol = new TinyProtocol(this) {
-            @Override
-            public Object onPacketInAsync(Player p, Channel channel, Object packet) {
-                if(packet == null)  return super.onPacketInAsync(p, channel, null);
-                if(p == null)  return super.onPacketInAsync(null, channel, packet);
-                if(channel == null)  return super.onPacketInAsync(p, null, packet);
-                String packetName = packet.getClass().getSimpleName();
-                PacketReceiveEvent e = new PacketReceiveEvent(p, packetName, packet);
-                PacketEvents.getPacketManager().callPacketReceiveEvent(e);
-                if(e.isCancelled()) {
-                    return super.onPacketInAsync(null, null, null);
-                }
-                return super.onPacketInAsync(p, channel, packet);
-            }
-
-            @Override
-            public Object onPacketOutAsync(Player p, Channel channel, Object packet) {
-                if(packet == null)  return super.onPacketInAsync(p, channel, null);
-                if(p == null)  return super.onPacketInAsync(null, channel, packet);
-                if(channel == null)  return super.onPacketInAsync(p, null, packet);
-                String packetName = packet.getClass().getSimpleName();
-                PacketSendEvent e = new PacketSendEvent(p, packetName, packet);
-                PacketEvents.getPacketManager().callPacketSendEvent(e);
-                if(e.isCancelled()) {
-                    return super.onPacketOutAsync(null, null, null);
-                }
-                return super.onPacketOutAsync(p, channel, packet);
-            }
-        };
-
-        Bukkit.getScheduler().scheduleAsyncRepeatingTask(this, new Runnable() {
-            @Override
-            public void run() {
-                long now = System.currentTimeMillis();
-                PacketEvents.getPacketManager().callServerTickEvent(new ServerTickEvent(now));
-            }
-        },  0L, 1L);
-
-    }
-    @Override
-    public void onDisable() {
-
-    }
-
-    public static Main getInstance() {
-        return instance;
-    }
-
-
-}

src/main/java/me/purplex/packetevents/PacketEvents.java

@@ -1,58 +0,0 @@
-package me.purplex.packetevents;
-
-import com.comphenix.tinyprotocol.Reflection.*;
-import com.comphenix.tinyprotocol.Reflection;
-import io.netty.channel.Channel;
-import me.purplex.packetevents.events.manager.PacketManager;
-import me.purplex.packetevents.packets.Packet;
-import org.bukkit.entity.Player;
-
-public class PacketEvents {
-    private static PacketManager packetManager;
-
-
-    public static PacketManager getPacketManager() {
-        if (packetManager == null) {
-            packetManager = new PacketManager();
-        }
-        return packetManager;
-    }
-
-
-    public void sendPacket(Player player, Object packet) {
-        Main.getInstance().protocol.sendPacket(player, packet);
-    }
-
-    public void sendPacket(Channel channel, Object packet) {
-        Main.getInstance().protocol.sendPacket(channel, packet);
-    }
-
-    public static Class<?> getPacketCass(String packet) {
-        return Reflection.getClass("{nms}." + packet);
-    }
-
-
-    public static void sendVelocity(Player player, double x, double y, double z) {
-        Class<?> velocityClass = getPacketCass(Packet.Server.ENTITY_VELOCITY);
-        FieldAccessor<Integer> entityIdField = Reflection.getField(velocityClass, int.class, 0);
-        FieldAccessor<Integer> fieldX = Reflection.getField(velocityClass, int.class, 1);
-        FieldAccessor<Integer> fieldY = Reflection.getField(velocityClass, int.class, 2);
-        FieldAccessor<Integer> fieldZ = Reflection.getField(velocityClass, int.class, 3);
-
-        Object velocityObject = null;
-        try {
-            velocityObject = velocityClass.newInstance();
-        } catch (InstantiationException e) {
-            e.printStackTrace();
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-
-        fieldX.set(velocityObject, (int) (x * 8000));
-        fieldY.set(velocityObject, (int) (y * 8000));
-        fieldZ.set(velocityObject, (int) (z * 8000));
-
-        entityIdField.set(velocityObject, player.getEntityId());
-        Main.getInstance().protocol.sendPacket(player, velocityObject);
-    }
-}

src/main/java/me/purplex/packetevents/enums/EntityUseAction.java

@@ -1,5 +0,0 @@
-package me.purplex.packetevents.enums;
-
-public enum EntityUseAction {
-    INTERACT, INTERACT_AT, ATTACK, INVALID, WRONG_PACKET;
-}

src/main/java/me/purplex/packetevents/enums/PlayerAction.java

@@ -1,21 +0,0 @@
-package me.purplex.packetevents.enums;
-
-public enum PlayerAction {
-    START_SNEAKING,
-
-    STOP_SNEAKING,
-
-    STOP_SLEEPING,
-
-    START_SPRINTING,
-
-    STOP_SPRINTING,
-
-    START_RIDING_JUMP,
-
-    STOP_RIDING_JUMP,
-
-    OPEN_INVENTORY,
-
-    START_FALL_FLYING, WRONG_PACKET;
-}

src/main/java/me/purplex/packetevents/enums/PlayerDigType.java

@@ -1,23 +0,0 @@
-package me.purplex.packetevents.enums;
-
-public enum PlayerDigType {
-
-    START_DESTROY_BLOCK,
-
-    ABORT_DESTROY_BLOCK,
-
-    STOP_DESTROY_BLOCK,
-
-    DROP_ALL_ITEMS,
-
-    DROP_ITEM,
-
-    RELEASE_USE_ITEM,
-
-    SWAP_HELD_ITEMS,
-
-    WRONG_PACKET;
-
-
-
-}

src/main/java/me/purplex/packetevents/events/PacketEvent.java

@@ -1,6 +0,0 @@
-package me.purplex.packetevents.events;
-
-
-public class PacketEvent {
-
-}