official pre-16

PacketLoginSendEvent#setPostTask created;
PacketStatusSendEvent#setPostTask created;

PlayerUtils#changeSkinProperty created;

Updated to PacketEvents-pre-16

LICENSE

@@ -1,21 +1,674 @@
-MIT License
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-Copyright (c) 2020 retrooper
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,82 +1,29 @@
 # packetevents
 
-Some tasks require you to work at the packet level.
-It is very common for people to write their own packet system and event manager.
-PacketEvents is here to save you a ton of work.
-We provide high level packet-wrappers.
-The PacketEvents API focuses on providing you easy to use packet-wrappers supporting 1.7.10 spigots up to the current latest version!
-This API even comes with two event systems.
-The first one (currently deprecated) is extremely similar to Bukkit's event system making it really easy to use for
-experienced Bukkit plugin developers.
-The second one (recommended) prioritizes performance.
-PacketEvents listens to its community. 
-Many users love shading the API into their plugin, so that their customers won't need to
-download the API as an external dependency.
-We have gone out of our way to support multiple plugins shading the API (resulting in duplicate PacketEvents APIs)
-and they all work together.
-
-### Resources
-* [Website](https://packetevents.github.io)
-* [SpigotMC](https://www.spigotmc.org/resources/packetevents-api.80279/)
-* [JavaDoc](https://retrooper.github.io/packetevents)
-
-### Licensing
-[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)\
-PacketEvents is licensed under the MIT License.
-We intentionally selected this license compared to stricter options.\
-[Summary of the license](https://tldrlegal.com/license/mit-license)
-
-### Contributing
-[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](CONTRIBUTOR_CODE_OF_CONDUCT.md)\
-PacketEvents is an open source project.
-We appreciate contributions.
-It is amazing that you want to take an extra step to contribute a change to the API that will
-hopefully benefit the majority of users.
-Before taking this step, please read the Contributor Code Of Conduct. (click on the badge above)
-Please also read [this](CONTRIBUTING.md) if you consider contributing.
-Our discord server has a role for contributors.\
-[Learn more about it in our discord server](https://discord.me/packetevents)
-
-### Forking
-We also appreciate forks.
-It is always great news to us knowing someone is building their own API off of the PacketEvents API.
-If you are developing a feature that is only going to benefit you and not the majority of the community,
-please do not contribute!
-Make a fork instead!
-Our discord server has a discord role for forkers.\
-[Learn more about it in our discord server](https://discord.me/packetevents)
-
-### Compilation
-PacketEvents is built with Maven and all past releases have always used maven.
-The majority of users (currently) in the Bukkit community use Maven.
-It should be easier for most people to contribute if we use Maven too.
-Just because PacketEvents is built with Maven doesn't mean you can't use other dependency managers to use the API.
-
-### Setup
-You can either use the API with a dependency manager(like Maven or Gradle), depend on a pre-built build or compile it yourself with the source code.
-We recommend using a dependency manager.
-#### 1. Using a dependency manager
+[![](https://img.shields.io/badge/License-GPLv3-yellow.svg)](https://github.com/retrooper/packetevents/blob/dev/LICENSE)
 [![](https://jitpack.io/v/retrooper/packetevents.svg)](https://jitpack.io/#retrooper/packetevents)
 
-#### 2. Using as an external pre-built dependency.
-* Download the [latest build from SpigotMC](https://www.spigotmc.org/resources/packetevents-api.80279/)
-* Add PacketEvents as a depend or soft-depend to your plugin.yml like this:
-```yml
-depend: [packetevents]
-```
-Your customers are now required to download this external pre-built dependency on their minecraft server.\
-It is an API and a Bukkit plugin at the same time.
-The version of the pre-built dependency is recommended to be the same as the version
-of the API you used in your plugin incase there have been API changes.
+PacketEvents is an open-source Packet API. It has many cross-version packet-wrappers. You can process incoming and outgoing packets on the server. You can even send packets with our packet-wrappers. We are here to save you a ton of time.
 
-#### 3. Compiling source code.
-When compiling the source code yourself, you are required to use Maven. (unless you switch yourself)\
-We currently do not have a guide showing you how to do this, but it should be self explanatory if you know what you are doing.
+### Resources
+* [SpigotMC](https://www.spigotmc.org/resources/packetevents-api.80279/)
+* [JavaDoc](https://packetevents.github.io/javadocs)
 
-### Author
-PacketEvents was started by retrooper.
-This API was initially for his private anti-cheat he was developing just to test around with.
-He has quit anti-cheat development and is now prioritizing this API and a few other private projects.
-PacketEvents now has a handfull of contributors improving the API.
-Share the API, donate, contribute, fork.
-Thanks. 
+### Setup
+[Learn more](https://github.com/retrooper/packetevents/wiki/1.-Setup)
+
+### Discord
+[Learn more](https://discord.me/packetevents)
+
+### Contributing/Forking
+[Learn more](https://github.com/retrooper/packetevents/wiki/2.-Contributing-and-Forking)\
+Our discord server has a role for contributors and forkers.
+
+### Sponsorships
+[![](https://www.ej-technologies.com/images/product_banners/jprofiler_small.png)](https://www.ej-technologies.com/products/jprofiler/overview.html)
+
+### Statistics
+PacketEvents collects statistics anonymously through bStats. Participation is completely optional and you can opt-out at any time, although it is really helpful in figuring out what environments the plugin is running in (i.e. versions of Spigot, Java), so I can adjust development accordingly.
+
+### Credit
+PacketEvents uses an injector that is extremely similar to ViaVersion's injector. I have included license and copyright holder notice in the files taken from ViaVersion. Thank you ViaVersion.

SUMMARY.md

@@ -0,0 +1,4 @@
+# Table of contents
+
+* [Initial page](README.md)
+

build.gradle

@@ -0,0 +1,90 @@
+plugins {
+    id 'java'
+    id 'maven-publish'
+}
+
+//gradle myJavadocs
+task myJavadocs(type: Javadoc) {
+    source = sourceSets.main.allJava
+    File projectDir = getProjectDir()
+    File javadocsDir = new File(projectDir.getParentFile().getAbsolutePath() + "/docs");
+    javadocsDir.mkdirs()
+    setDestinationDir(javadocsDir)
+}
+
+repositories {
+    mavenLocal()
+    maven {
+        url = uri('https://hub.spigotmc.org/nexus/content/repositories/snapshots/')
+    }
+
+    maven {
+        url 'https://papermc.io/repo/repository/maven-public/'
+    }
+
+    maven {
+        url 'https://repo.opencollab.dev/maven-snapshots/'
+    }
+
+    maven {
+        url 'https://repo.opencollab.dev/maven-releases/'
+    }
+
+    maven {
+        url = uri('https://jitpack.io/')
+    }
+
+    maven {
+        url = uri('https://nexus.funkemunky.cc/content/repositories/releases/')
+    }
+
+    maven {
+        url = uri('https://repo.viaversion.com/')
+    }
+
+    maven {
+        url = uri('https://oss.sonatype.org/content/repositories/releases/')
+    }
+
+    maven {
+        url = uri('https://repo.maven.apache.org/maven2/')
+    }
+}
+
+dependencies {
+    implementation 'org.jetbrains:annotations:20.1.0'
+    /*compileOnly 'org.github.spigot:1.16.2:1.16.2'
+    compileOnly 'org.github.spigot:1.8.8:1.8.8'
+    compileOnly 'org.github.spigot:1.7.10:1.7.10'*/
+    compileOnly 'org.github.spigot:1.16.2:1.16.2'
+    compileOnly 'org.github.spigot:1.13.2:1.13.2'
+    compileOnly 'org.github.spigot:1.13:1.13'
+    compileOnly 'org.github.spigot:1.12.2:1.12.2'
+    compileOnly 'org.github.spigot:1.9.4:1.9.4'
+    compileOnly 'org.github.spigot:1.9:1.9'
+    compileOnly 'org.github.spigot:1.8.8:1.8.8'
+    compileOnly 'org.github.spigot:1.7.10:1.7.10'
+
+    compileOnly 'org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT'
+    compileOnly 'com.destroystokyo.paper:paper-api:1.16.5-R0.1-SNAPSHOT'
+    compileOnly 'org.geysermc:connector:1.2.1-SNAPSHOT'
+    compileOnly 'us.myles:viaversion:3.2.0'
+    compileOnly 'com.github.ProtocolSupport:ProtocolSupport:3d24efeda6'
+}
+
+group = 'io.github.retrooper'
+version = '1.8-pre-16'
+description = 'packetevents'
+java.sourceCompatibility = JavaVersion.VERSION_1_8
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            from(components.java)
+        }
+    }
+}
+
+tasks.withType(JavaCompile) {
+    options.encoding = 'UTF-8'
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

pom.xml

@@ -1,174 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         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>io.github.retrooper</groupId>
-    <artifactId>packetevents</artifactId>
-    <version>1.8-PRE-2</version>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>3.2.4</version>
-                <executions>
-                    <execution>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                        <configuration>
-                            <minimizeJar>true</minimizeJar>
-                            <createDependencyReducedPom>false</createDependencyReducedPom>
-                            <createTestSourcesJar>false</createTestSourcesJar>
-                            <shadedArtifactAttached>false</shadedArtifactAttached>
-                        </configuration>
-                    </execution>
-                </executions>
-            </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>
-        <resources>
-            <resource>
-                <directory>src/main/resources</directory>
-                <filtering>true</filtering>
-            </resource>
-        </resources>
-    </build>
-    <packaging>jar</packaging>
-    <name>packetevents</name>
-
-    <properties>
-        <java.version>1.8</java.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
-    <repositories>
-        <repository>
-            <id>spigot-repo</id>
-            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
-        </repository>
-        <repository>
-            <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>
-        <repository>
-            <id>sonotype</id>
-            <url>https://oss.sonatype.org/content/repositories/releases/</url>
-        </repository>
-    </repositories>
-
-
-    <dependencies>
-        <dependency>
-            <groupId>org.jetbrains</groupId>
-            <artifactId>annotations</artifactId>
-            <version>20.1.0</version>
-            <scope>compile</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.github.spigot</groupId>
-            <artifactId>1.16.2</artifactId>
-            <version>1.16.2</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.github.spigot</groupId>
-            <artifactId>1.13.2</artifactId>
-            <version>1.13.2</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.github.spigot</groupId>
-            <artifactId>1.12.2</artifactId>
-            <version>1.12.2</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.github.spigot</groupId>
-            <artifactId>1.9</artifactId>
-            <version>1.9</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.github.spigot</groupId>
-            <artifactId>1.8.8</artifactId>
-            <version>1.8.8</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <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>3.2.0</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.github.ProtocolSupport</groupId>
-            <artifactId>ProtocolSupport</artifactId>
-            <version>3d24efeda6</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>
-    </dependencies>
-</project>

settings.gradle

@@ -0,0 +1,5 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ */
+
+rootProject.name = 'packetevents'

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

@@ -1,36 +1,34 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents;
 
+import io.github.retrooper.packetevents.bstats.Metrics;
 import io.github.retrooper.packetevents.event.impl.PostPlayerInjectEvent;
 import io.github.retrooper.packetevents.event.manager.EventManager;
 import io.github.retrooper.packetevents.event.manager.PEEventManager;
 import io.github.retrooper.packetevents.exceptions.PacketEventsLoadFailureException;
-import io.github.retrooper.packetevents.handler.PacketHandlerInternal;
+import io.github.retrooper.packetevents.injector.GlobalChannelInjector;
+import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.processor.BukkitEventProcessorInternal;
+import io.github.retrooper.packetevents.processor.PacketProcessorInternal;
 import io.github.retrooper.packetevents.settings.PacketEventsSettings;
 import io.github.retrooper.packetevents.updatechecker.UpdateChecker;
 import io.github.retrooper.packetevents.utils.entityfinder.EntityFinderUtils;
@@ -38,61 +36,61 @@ import io.github.retrooper.packetevents.utils.netty.bytebuf.ByteBufUtil;
 import io.github.retrooper.packetevents.utils.netty.bytebuf.ByteBufUtil_7;
 import io.github.retrooper.packetevents.utils.netty.bytebuf.ByteBufUtil_8;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
-import io.github.retrooper.packetevents.utils.player.ClientVersion;
 import io.github.retrooper.packetevents.utils.player.PlayerUtils;
 import io.github.retrooper.packetevents.utils.server.ServerUtils;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
 import io.github.retrooper.packetevents.utils.version.PEVersion;
-import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
-import io.github.retrooper.packetevents.utils.versionlookup.protocollib.ProtocolLibVersionLookupUtils;
-import io.github.retrooper.packetevents.utils.versionlookup.v_1_7_10.ProtocolVersionAccessor_v_1_7;
-import io.github.retrooper.packetevents.utils.versionlookup.viaversion.ViaVersionLookupUtils;
 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.PlayerLoginEvent;
-import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.ServicePriority;
-import org.jetbrains.annotations.NotNull;
+import org.bukkit.plugin.java.JavaPlugin;
 
-import java.net.InetSocketAddress;
-import java.util.UUID;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public final class PacketEvents implements Listener, EventManager {
-    //TODO finish unfinished wrappers
     private static PacketEvents instance;
-    private final PEVersion version = new PEVersion(1, 7, 9, 1);
+    private static Plugin plugin;
+    private final PEVersion version = new PEVersion(1, 7, 9, 16);
     private final EventManager eventManager = new PEEventManager();
     private final PlayerUtils playerUtils = new PlayerUtils();
     private final ServerUtils serverUtils = new ServerUtils();
-    private final UpdateChecker updateChecker = new UpdateChecker();
-    private static Plugin plugin;
-    public static String handlerName;
-
-    //Executor used for player injecting/ejecting.
-    public ExecutorService injectAndEjectExecutorService;//Initiated in init method
-
-    public PacketHandlerInternal packetHandlerInternal;
-    private boolean loading, loaded, initialized, initializing, terminating;
+    private final PacketProcessorInternal packetProcessorInternal = new PacketProcessorInternal();
+    private final BukkitEventProcessorInternal bukkitEventProcessorInternal = new BukkitEventProcessorInternal();
+    private final GlobalChannelInjector injector = new GlobalChannelInjector();
+    private final AtomicBoolean injectorReady = new AtomicBoolean();
+    private String handlerName;
     private PacketEventsSettings settings = new PacketEventsSettings();
-    private final ByteBufUtil byteBufUtil = NMSUtils.legacyNettyImportMode ? new ByteBufUtil_7() : new ByteBufUtil_8();
+    private ByteBufUtil byteBufUtil;
+    private UpdateChecker updateChecker;
+    private volatile boolean loading, loaded;
+    private boolean initialized, initializing, terminating;
+    private boolean lateBind = false;
 
     public static PacketEvents create(final Plugin plugin) {
-        if (!Bukkit.getServicesManager().isProvidedFor(PacketEvents.class)) {
-            instance = new PacketEvents();
-            Bukkit.getServicesManager().register(PacketEvents.class, instance,
-                    plugin, ServicePriority.Normal);
+        if (Bukkit.isPrimaryThread()) {
+            //We are on the main thread
+            if (!Bukkit.getServicesManager().isProvidedFor(PacketEvents.class)) {
+                //We can register in the service manager.
+                instance = new PacketEvents();
+                Bukkit.getServicesManager().register(PacketEvents.class, instance,
+                        plugin, ServicePriority.Normal);
+                PacketEvents.plugin = plugin;
+                return instance;
+            } else {
+                //We have already registered. Let us load what was registered.
+                return instance = Bukkit.getServicesManager().load(PacketEvents.class);
+            }
+        } else {
+            //We are off thread, we cannot use the service manager.
+            if (instance == null) {
+                PacketEvents.plugin = plugin;
+                instance = new PacketEvents();
+            }
             return instance;
         }
-        return instance = Bukkit.getServicesManager().load(PacketEvents.class);
     }
 
     public static PacketEvents get() {
@@ -101,99 +99,132 @@ public final class PacketEvents implements Listener, EventManager {
 
     @Deprecated
     public static PacketEvents getAPI() {
-        return get();
+        return instance;
     }
 
 
     public void load() {
         if (!loaded && !loading) {
             loading = true;
+            //Resolve server version and cache
             ServerVersion version = ServerVersion.getVersion();
             WrappedPacket.version = version;
             NMSUtils.version = version;
             EntityFinderUtils.version = version;
-
+            handlerName = "pe-" + plugin.getName();
             try {
                 NMSUtils.load();
 
-                //Load all classes
                 PacketTypeClasses.load();
 
+                PacketType.load();
+
                 EntityFinderUtils.load();
             } catch (Exception ex) {
                 loading = false;
                 throw new PacketEventsLoadFailureException(ex);
             }
+
+            byteBufUtil = NMSUtils.legacyNettyImportMode ? new ByteBufUtil_7() : new ByteBufUtil_8();
+            updateChecker = new UpdateChecker();
+            if (!injectorReady.get()) {
+                injector.load();
+                lateBind = !injector.isBound();
+                //If late-bind is enabled, we will inject a bit later.
+                if (!lateBind) {
+                    injector.inject();
+                }
+                injectorReady.set(true);
+            }
+
             loaded = true;
             loading = false;
         }
     }
 
+    public void loadAsyncNewThread() {
+        new Thread(this::load).start();
+    }
+
+    public void loadAsync(ExecutorService executorService) {
+        executorService.execute(this::load);
+    }
+
     public void loadSettings(PacketEventsSettings settings) {
         this.settings = settings;
     }
 
-    public void init(final Plugin plugin) {
-        init(plugin, settings);
+    public void init() {
+        init(getSettings());
     }
 
-    public void init(final Plugin pl, PacketEventsSettings packetEventsSettings) {
+    public void init(PacketEventsSettings packetEventsSettings) {
+        //Load if we haven't loaded already
         load();
         if (!initialized && !initializing) {
             initializing = true;
             settings = packetEventsSettings;
-            if (settings.getInjectAndEjectThreadCount() < 1) {
-                settings.injectAndEjectThreadCount(1);
-            }
             settings.lock();
 
-            int injectAndEjectThreadCount = settings.getInjectAndEjectThreadCount();
-            injectAndEjectExecutorService = Executors.newFixedThreadPool(injectAndEjectThreadCount, new ThreadFactory() {
-
-                private final AtomicInteger id = new AtomicInteger();
-
-                @Override
-                public Thread newThread(@NotNull Runnable r) {
-                    return new Thread(r, "PacketEvents-inject-eject #" + id.getAndIncrement());
-                }
-            });
-
-            //Register Bukkit listener
-            plugin = pl;
-            Bukkit.getPluginManager().registerEvents(this, plugin);
-            handlerName = "pe-" + plugin.getName();
-            packetHandlerInternal = new PacketHandlerInternal();
-            for (final Player p : Bukkit.getOnlinePlayers()) {
-                try {
-                    getPlayerUtils().injectPlayer(p);
-                } catch (Exception ex) {
-                    p.kickPlayer(getSettings().getInjectionFailureMessage());
-                }
-            }
-
             if (settings.shouldCheckForUpdates()) {
-                Thread thread = new Thread(new Runnable() {
-                    @Override
-                    public void run() {
-                        UpdateChecker.UpdateCheckerStatus status = updateChecker.checkForUpdate();
-                    }
-                }, "PacketEvents-update-check-thread");
-                thread.start();
+                handleUpdateCheck();
             }
+
+            if (settings.isbStatsEnabled()) {
+                Metrics metrics = new Metrics((JavaPlugin) getPlugin(), 11327);
+            }
+
+            //We must wait for the injector to initialize.
+
+            //Wait for the injector to be ready.
+            while (!injectorReady.get()) {
+            }
+            Runnable postInjectTask = () -> {
+                Bukkit.getPluginManager().registerEvents(bukkitEventProcessorInternal, plugin);
+                for (final Player p : Bukkit.getOnlinePlayers()) {
+                    try {
+                        injector.injectPlayer(p);
+                        PacketEvents.get().getEventManager().callEvent(new PostPlayerInjectEvent(p, false));
+                    } catch (Exception ex) {
+                        p.kickPlayer("Failed to inject... Please rejoin!");
+                    }
+                }
+            };
+
+            if (lateBind) {
+                //If late-bind is enabled, we still need to inject (after all plugins enabled).
+                Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, injector::inject);
+                Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, postInjectTask);
+            } else {
+                postInjectTask.run();
+            }
+
+
             initialized = true;
             initializing = false;
         }
     }
 
+    @Deprecated
+    public void init(Plugin plugin) {
+        init(plugin, settings);
+    }
+
+    @Deprecated
+    public void init(Plugin pl, PacketEventsSettings packetEventsSettings) {
+        init(packetEventsSettings);
+    }
+
     public void terminate() {
         if (initialized && !terminating) {
-            for (Player player : Bukkit.getOnlinePlayers()) {
-                packetHandlerInternal.ejectPlayer(player);
+            //Eject all players
+            for (Player p : Bukkit.getOnlinePlayers()) {
+                injector.ejectPlayer(p);
             }
-            packetHandlerInternal.cleanup();
-
+            //Eject the injector if needed
+            injector.eject();
+            //Unregister all our listeners
             getEventManager().unregisterAllListeners();
-            injectAndEjectExecutorService.shutdownNow();
             initialized = false;
             terminating = false;
         }
@@ -201,6 +232,7 @@ public final class PacketEvents implements Listener, EventManager {
 
     /**
      * Use {@link #terminate()}. This is deprecated
+     *
      * @deprecated "Stop" might be misleading and "terminate" sounds better I guess...
      */
     @Deprecated
@@ -208,27 +240,27 @@ public final class PacketEvents implements Listener, EventManager {
         terminate();
     }
 
-    public boolean hasLoaded() {
-        return loaded;
-    }
-
     public boolean isLoading() {
         return loading;
     }
 
-    public boolean isInitializing() {
-        return initializing;
-    }
-
-    @Deprecated
-    public boolean isStopping() {
-        return terminating;
+    public boolean hasLoaded() {
+        return loaded;
     }
 
     public boolean isTerminating() {
         return terminating;
     }
 
+    @Deprecated
+    public boolean isStopping() {
+        return isTerminating();
+    }
+
+    public boolean isInitializing() {
+        return initializing;
+    }
+
     public boolean isInitialized() {
         return initialized;
     }
@@ -237,11 +269,18 @@ public final class PacketEvents implements Listener, EventManager {
         return plugin;
     }
 
-    /**
-     * Get the PacketEvents settings.
-     *
-     * @return Configure some settings for the API
-     */
+    public GlobalChannelInjector getInjector() {
+        return injector;
+    }
+
+    public PacketProcessorInternal getInternalPacketProcessor() {
+        return packetProcessorInternal;
+    }
+
+    public String getHandlerName() {
+        return handlerName;
+    }
+
     public PacketEventsSettings getSettings() {
         return settings;
     }
@@ -270,72 +309,36 @@ public final class PacketEvents implements Listener, EventManager {
         return updateChecker;
     }
 
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onLogin(final PlayerLoginEvent e) {
-        if (getSettings().shouldInjectEarly()) {
-            try {
-                packetHandlerInternal.injectPlayer(e.getPlayer());
-            } catch (Exception ex) {
-               e.disallow(PlayerLoginEvent.Result.KICK_OTHER, PacketEvents.get().getSettings().getInjectionFailureMessage());
+    private void handleUpdateCheck() {
+        Thread thread = new Thread(() -> {
+            PacketEvents.get().getPlugin().getLogger().info("[packetevents] Checking for an update, please wait...");
+            UpdateChecker.UpdateCheckerStatus status = updateChecker.checkForUpdate();
+            int seconds = 5;
+            int retryCount = 5;
+            for (int i = 0; i < retryCount; i++) {
+                if (status != UpdateChecker.UpdateCheckerStatus.FAILED) {
+                    break;
+                }
+                PacketEvents.get().getPlugin().getLogger().severe("[packetevents] Checking for an update again in " + seconds + " seconds...");
+                try {
+                    Thread.sleep(seconds * 1000L);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+
+                seconds *= 2;
+
+                status = updateChecker.checkForUpdate();
+
+                if (i == (retryCount - 1)) {
+                    PacketEvents.get().getPlugin().getLogger().severe("[packetevents] PacketEvents failed to check for an update. No longer retrying.");
+                    break;
+                }
+
             }
-        }
+
+        }, "packetevents-update-check-thread");
+        thread.start();
     }
 
-    @EventHandler(priority = EventPriority.HIGH)
-    public void onJoin(final PlayerJoinEvent e) {
-        final InetSocketAddress address = e.getPlayer().getAddress();
-        boolean viaAvailable = ViaVersionLookupUtils.isAvailable();
-        PacketEvents.get().getPlayerUtils().loginTime.put(e.getPlayer().getUniqueId(), System.currentTimeMillis());
-        if (viaAvailable) {
-            PacketEvents.get().getPlayerUtils().clientVersionsMap.put(e.getPlayer().getAddress(), ClientVersion.TEMP_UNRESOLVED);
-            Bukkit.getScheduler().runTaskLaterAsynchronously(getPlugin(), new Runnable() {
-                @Override
-                public void run() {
-                    int protocolVersion = VersionLookupUtils.getProtocolVersion(e.getPlayer());
-                    ClientVersion version = ClientVersion.getClientVersion(protocolVersion);
-                    PacketEvents.get().getPlayerUtils().clientVersionsMap.put(address, version);
-                    PacketEvents.get().getEventManager().callEvent(new PostPlayerInjectEvent(e.getPlayer(), true));
-                }
-            }, 1L);
-        } else if (getServerUtils().getVersion() == ServerVersion.v_1_7_10) {
-            ClientVersion version = ClientVersion.getClientVersion(ProtocolVersionAccessor_v_1_7.getProtocolVersion(e.getPlayer()));
-            if (version == ClientVersion.UNRESOLVED) {
-                version = getPlayerUtils().tempClientVersionMap.get(address);
-                if (version == null) {
-                    version = ClientVersion.UNRESOLVED;
-                }
-            }
-            getPlayerUtils().clientVersionsMap.put(address, version);
-        }
-
-        if (!getSettings().shouldInjectEarly()) {
-            try {
-                packetHandlerInternal.injectPlayer(e.getPlayer());
-                //Injection was successful as no exception was thrown...
-                if (!viaAvailable) {
-                    if (ProtocolLibVersionLookupUtils.isAvailable()) {
-                        ClientVersion version = ClientVersion.getClientVersion(ProtocolLibVersionLookupUtils.getProtocolVersion(e.getPlayer()));
-                        PacketEvents.get().getPlayerUtils().clientVersionsMap.put(address, version);
-                    }
-                    PacketEvents.get().getEventManager().callEvent(new PostPlayerInjectEvent(e.getPlayer(), false));
-                }
-            } catch (Exception ex) {
-                e.getPlayer().kickPlayer(getSettings().getInjectionFailureMessage());
-            }
-        } else {
-            if (!viaAvailable) {
-                PacketEvents.get().getEventManager().callEvent(new PostPlayerInjectEvent(e.getPlayer(), false));
-            }
-        }
-    }
-
-
-    @EventHandler(priority = EventPriority.HIGHEST)
-    public void onQuit(final PlayerQuitEvent e) {
-        UUID uuid = e.getPlayer().getUniqueId();
-        packetHandlerInternal.ejectPlayer(e.getPlayer());
-        PacketEvents.get().getPlayerUtils().loginTime.remove(uuid);
-        PacketEvents.get().getPlayerUtils().playerPingMap.remove(uuid);
-        PacketEvents.get().getPlayerUtils().playerSmoothedPingMap.remove(uuid);
-    }
 }

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

@@ -1,51 +1,51 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents;
 
+import io.github.retrooper.packetevents.settings.PacketEventsSettings;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
 import org.bukkit.plugin.java.JavaPlugin;
 
 public class PacketEventsPlugin extends JavaPlugin {
-
+    //TODO finish remaining wrappers
+    //1.8.1 -  PacketListener will have all listener methods, packetlistenerabstract will implement it with filter system additionally.
     @Override
     public void onLoad() {
-
+        //Return value of create is your PacketEvents instance.
+        PacketEvents.create(this);
+        PacketEventsSettings settings = PacketEvents.get().getSettings();
+        settings
+                .fallbackServerVersion(ServerVersion.v_1_7_10)
+                .compatInjector(false)
+                .checkForUpdates(true)
+                .bStats(true);
+        PacketEvents.get().loadAsyncNewThread();
+        //You can do something here as it is loading
     }
 
     @Override
     public void onEnable() {
-        if (PacketEvents.get() == null) {
-            PacketEvents.create(this);
-            PacketEvents.get().load();
-            PacketEvents.get().init(this);
-        }
+        PacketEvents.get().init();
     }
 
     @Override
     public void onDisable() {
-        if (PacketEvents.get() != null) {
-            PacketEvents.get().terminate();
-        }
+        PacketEvents.get().terminate();
     }
 }

src/main/java/io/github/retrooper/packetevents/bstats/Metrics.java

@@ -0,0 +1,860 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.bstats;
+
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import javax.net.ssl.HttpsURLConnection;
+import java.io.*;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+import java.util.logging.Level;
+import java.util.stream.Collectors;
+import java.util.zip.GZIPOutputStream;
+
+public class Metrics {
+
+    private final Plugin plugin;
+
+    private final MetricsBase metricsBase;
+
+    /**
+     * Creates a new Metrics instance.
+     *
+     * @param plugin    Your plugin instance.
+     * @param serviceId The id of the service. It can be found at <a
+     *                  href="https://bstats.org/what-is-my-plugin-id">What is my plugin id?</a>
+     */
+    public Metrics(JavaPlugin plugin, int serviceId) {
+        this.plugin = plugin;
+        // Get the config file
+        File bStatsFolder = new File(plugin.getDataFolder().getParentFile(), "bStats");
+        File configFile = new File(bStatsFolder, "config.yml");
+        YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
+        if (!config.isSet("serverUuid")) {
+            config.addDefault("enabled", true);
+            config.addDefault("serverUuid", UUID.randomUUID().toString());
+            config.addDefault("logFailedRequests", false);
+            config.addDefault("logSentData", false);
+            config.addDefault("logResponseStatusText", false);
+            // Inform the server owners about bStats
+            config
+                    .options()
+                    .header(
+                            "bStats (https://bStats.org) collects some basic information for plugin authors, like how\n"
+                                    + "many people use their plugin and their total player count. It's recommended to keep bStats\n"
+                                    + "enabled, but if you're not comfortable with this, you can turn this setting off. There is no\n"
+                                    + "performance penalty associated with having metrics enabled, and data sent to bStats is fully\n"
+                                    + "anonymous.")
+                    .copyDefaults(true);
+            try {
+                config.save(configFile);
+            } catch (IOException ignored) {
+            }
+        }
+        // Load the data
+        boolean enabled = config.getBoolean("enabled", true);
+        String serverUUID = config.getString("serverUuid");
+        boolean logErrors = config.getBoolean("logFailedRequests", false);
+        boolean logSentData = config.getBoolean("logSentData", false);
+        boolean logResponseStatusText = config.getBoolean("logResponseStatusText", false);
+        metricsBase =
+                new MetricsBase(
+                        "bukkit",
+                        serverUUID,
+                        serviceId,
+                        enabled,
+                        this::appendPlatformData,
+                        this::appendServiceData,
+                        submitDataTask -> Bukkit.getScheduler().runTask(plugin, submitDataTask),
+                        plugin::isEnabled,
+                        (message, error) -> this.plugin.getLogger().log(Level.WARNING, message, error),
+                        (message) -> this.plugin.getLogger().log(Level.INFO, message),
+                        logErrors,
+                        logSentData,
+                        logResponseStatusText);
+    }
+
+    /**
+     * Adds a custom chart.
+     *
+     * @param chart The chart to add.
+     */
+    public void addCustomChart(CustomChart chart) {
+        metricsBase.addCustomChart(chart);
+    }
+
+    private void appendPlatformData(JsonObjectBuilder builder) {
+        builder.appendField("playerAmount", getPlayerAmount());
+        builder.appendField("onlineMode", Bukkit.getOnlineMode() ? 1 : 0);
+        builder.appendField("bukkitVersion", Bukkit.getVersion());
+        builder.appendField("bukkitName", Bukkit.getName());
+        builder.appendField("javaVersion", System.getProperty("java.version"));
+        builder.appendField("osName", System.getProperty("os.name"));
+        builder.appendField("osArch", System.getProperty("os.arch"));
+        builder.appendField("osVersion", System.getProperty("os.version"));
+        builder.appendField("coreCount", Runtime.getRuntime().availableProcessors());
+    }
+
+    private void appendServiceData(JsonObjectBuilder builder) {
+        builder.appendField("pluginVersion", plugin.getDescription().getVersion());
+    }
+
+    private int getPlayerAmount() {
+        try {
+            // Around MC 1.8 the return type was changed from an array to a collection,
+            // This fixes java.lang.NoSuchMethodError:
+            // org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
+            Method onlinePlayersMethod = Class.forName("org.bukkit.Server").getMethod("getOnlinePlayers");
+            return onlinePlayersMethod.getReturnType().equals(Collection.class)
+                    ? ((Collection<?>) onlinePlayersMethod.invoke(Bukkit.getServer())).size()
+                    : ((Player[]) onlinePlayersMethod.invoke(Bukkit.getServer())).length;
+        } catch (Exception e) {
+            // Just use the new method if the reflection failed
+            return Bukkit.getOnlinePlayers().size();
+        }
+    }
+
+    public static class MetricsBase {
+
+        /**
+         * The version of the Metrics class.
+         */
+        public static final String METRICS_VERSION = "2.2.1";
+
+        private static final ScheduledExecutorService scheduler =
+                Executors.newScheduledThreadPool(1, task -> new Thread(task, "bStats-Metrics"));
+
+        private static final String REPORT_URL = "https://bStats.org/api/v2/data/%s";
+
+        private final String platform;
+
+        private final String serverUuid;
+
+        private final int serviceId;
+
+        private final Consumer<JsonObjectBuilder> appendPlatformDataConsumer;
+
+        private final Consumer<JsonObjectBuilder> appendServiceDataConsumer;
+
+        private final Consumer<Runnable> submitTaskConsumer;
+
+        private final Supplier<Boolean> checkServiceEnabledSupplier;
+
+        private final BiConsumer<String, Throwable> errorLogger;
+
+        private final Consumer<String> infoLogger;
+
+        private final boolean logErrors;
+
+        private final boolean logSentData;
+
+        private final boolean logResponseStatusText;
+
+        private final Set<CustomChart> customCharts = new HashSet<>();
+
+        private final boolean enabled;
+
+        /**
+         * Creates a new MetricsBase class instance.
+         *
+         * @param platform                    The platform of the service.
+         * @param serviceId                   The id of the service.
+         * @param serverUuid                  The server uuid.
+         * @param enabled                     Whether or not data sending is enabled.
+         * @param appendPlatformDataConsumer  A consumer that receives a {@code JsonObjectBuilder} and
+         *                                    appends all platform-specific data.
+         * @param appendServiceDataConsumer   A consumer that receives a {@code JsonObjectBuilder} and
+         *                                    appends all service-specific data.
+         * @param submitTaskConsumer          A consumer that takes a runnable with the submit task. This can be
+         *                                    used to delegate the data collection to a another thread to prevent errors caused by
+         *                                    concurrency. Can be {@code null}.
+         * @param checkServiceEnabledSupplier A supplier to check if the service is still enabled.
+         * @param errorLogger                 A consumer that accepts log message and an error.
+         * @param infoLogger                  A consumer that accepts info log messages.
+         * @param logErrors                   Whether or not errors should be logged.
+         * @param logSentData                 Whether or not the sent data should be logged.
+         * @param logResponseStatusText       Whether or not the response status text should be logged.
+         */
+        public MetricsBase(
+                String platform,
+                String serverUuid,
+                int serviceId,
+                boolean enabled,
+                Consumer<JsonObjectBuilder> appendPlatformDataConsumer,
+                Consumer<JsonObjectBuilder> appendServiceDataConsumer,
+                Consumer<Runnable> submitTaskConsumer,
+                Supplier<Boolean> checkServiceEnabledSupplier,
+                BiConsumer<String, Throwable> errorLogger,
+                Consumer<String> infoLogger,
+                boolean logErrors,
+                boolean logSentData,
+                boolean logResponseStatusText) {
+            this.platform = platform;
+            this.serverUuid = serverUuid;
+            this.serviceId = serviceId;
+            this.enabled = enabled;
+            this.appendPlatformDataConsumer = appendPlatformDataConsumer;
+            this.appendServiceDataConsumer = appendServiceDataConsumer;
+            this.submitTaskConsumer = submitTaskConsumer;
+            this.checkServiceEnabledSupplier = checkServiceEnabledSupplier;
+            this.errorLogger = errorLogger;
+            this.infoLogger = infoLogger;
+            this.logErrors = logErrors;
+            this.logSentData = logSentData;
+            this.logResponseStatusText = logResponseStatusText;
+            checkRelocation();
+            if (enabled) {
+                startSubmitting();
+            }
+        }
+
+        /**
+         * Gzips the given string.
+         *
+         * @param str The string to gzip.
+         * @return The gzipped string.
+         */
+        private static byte[] compress(final String str) throws IOException {
+            if (str == null) {
+                return null;
+            }
+            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+            try (GZIPOutputStream gzip = new GZIPOutputStream(outputStream)) {
+                gzip.write(str.getBytes(StandardCharsets.UTF_8));
+            }
+            return outputStream.toByteArray();
+        }
+
+        public void addCustomChart(CustomChart chart) {
+            this.customCharts.add(chart);
+        }
+
+        private void startSubmitting() {
+            final Runnable submitTask =
+                    () -> {
+                        if (!enabled || !checkServiceEnabledSupplier.get()) {
+                            // Submitting data or service is disabled
+                            scheduler.shutdown();
+                            return;
+                        }
+                        if (submitTaskConsumer != null) {
+                            submitTaskConsumer.accept(this::submitData);
+                        } else {
+                            this.submitData();
+                        }
+                    };
+            // Many servers tend to restart at a fixed time at xx:00 which causes an uneven distribution
+            // of requests on the
+            // bStats backend. To circumvent this problem, we introduce some randomness into the initial
+            // and second delay.
+            // WARNING: You must not modify and part of this Metrics class, including the submit delay or
+            // frequency!
+            // WARNING: Modifying this code will get your plugin banned on bStats. Just don't do it!
+            long initialDelay = (long) (1000 * 60 * (3 + Math.random() * 3));
+            long secondDelay = (long) (1000 * 60 * (Math.random() * 30));
+            scheduler.schedule(submitTask, initialDelay, TimeUnit.MILLISECONDS);
+            scheduler.scheduleAtFixedRate(
+                    submitTask, initialDelay + secondDelay, 1000 * 60 * 30, TimeUnit.MILLISECONDS);
+        }
+
+        private void submitData() {
+            final JsonObjectBuilder baseJsonBuilder = new JsonObjectBuilder();
+            appendPlatformDataConsumer.accept(baseJsonBuilder);
+            final JsonObjectBuilder serviceJsonBuilder = new JsonObjectBuilder();
+            appendServiceDataConsumer.accept(serviceJsonBuilder);
+            JsonObjectBuilder.JsonObject[] chartData =
+                    customCharts.stream()
+                            .map(customChart -> customChart.getRequestJsonObject(errorLogger, logErrors))
+                            .filter(Objects::nonNull)
+                            .toArray(JsonObjectBuilder.JsonObject[]::new);
+            serviceJsonBuilder.appendField("id", serviceId);
+            serviceJsonBuilder.appendField("customCharts", chartData);
+            baseJsonBuilder.appendField("service", serviceJsonBuilder.build());
+            baseJsonBuilder.appendField("serverUUID", serverUuid);
+            baseJsonBuilder.appendField("metricsVersion", METRICS_VERSION);
+            JsonObjectBuilder.JsonObject data = baseJsonBuilder.build();
+            scheduler.execute(
+                    () -> {
+                        try {
+                            // Send the data
+                            sendData(data);
+                        } catch (Exception e) {
+                            // Something went wrong! :(
+                            if (logErrors) {
+                                errorLogger.accept("Could not submit bStats metrics data", e);
+                            }
+                        }
+                    });
+        }
+
+        private void sendData(JsonObjectBuilder.JsonObject data) throws Exception {
+            if (logSentData) {
+                infoLogger.accept("Sent bStats metrics data: " + data.toString());
+            }
+            String url = String.format(REPORT_URL, platform);
+            HttpsURLConnection connection = (HttpsURLConnection) new URL(url).openConnection();
+            // Compress the data to save bandwidth
+            byte[] compressedData = compress(data.toString());
+            connection.setRequestMethod("POST");
+            connection.addRequestProperty("Accept", "application/json");
+            connection.addRequestProperty("Connection", "close");
+            connection.addRequestProperty("Content-Encoding", "gzip");
+            connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
+            connection.setRequestProperty("Content-Type", "application/json");
+            connection.setRequestProperty("User-Agent", "Metrics-Service/1");
+            connection.setDoOutput(true);
+            try (DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream())) {
+                outputStream.write(compressedData);
+            }
+            StringBuilder builder = new StringBuilder();
+            try (BufferedReader bufferedReader =
+                         new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+                String line;
+                while ((line = bufferedReader.readLine()) != null) {
+                    builder.append(line);
+                }
+            }
+            if (logResponseStatusText) {
+                infoLogger.accept("Sent data to bStats and received response: " + builder);
+            }
+        }
+
+        /**
+         * Checks that the class was properly relocated.
+         */
+        private void checkRelocation() {
+            // You can use the property to disable the check in your test environment
+            if (System.getProperty("bstats.relocatecheck") == null
+                    || !System.getProperty("bstats.relocatecheck").equals("false")) {
+                // Maven's Relocate is clever and changes strings, too. So we have to use this little
+                // "trick" ... :D
+                final String defaultPackage =
+                        new String(new byte[]{'o', 'r', 'g', '.', 'b', 's', 't', 'a', 't', 's'});
+                final String examplePackage =
+                        new String(new byte[]{'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e'});
+                // We want to make sure no one just copy & pastes the example and uses the wrong package
+                // names
+                if (MetricsBase.class.getPackage().getName().startsWith(defaultPackage)
+                        || MetricsBase.class.getPackage().getName().startsWith(examplePackage)) {
+                    throw new IllegalStateException("bStats Metrics class has not been relocated correctly!");
+                }
+            }
+        }
+    }
+
+    public static class AdvancedBarChart extends CustomChart {
+
+        private final Callable<Map<String, int[]>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public AdvancedBarChart(String chartId, Callable<Map<String, int[]>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
+            Map<String, int[]> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, int[]> entry : map.entrySet()) {
+                if (entry.getValue().length == 0) {
+                    // Skip this invalid
+                    continue;
+                }
+                allSkipped = false;
+                valuesBuilder.appendField(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
+        }
+    }
+
+    public static class SimpleBarChart extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SimpleBarChart(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                valuesBuilder.appendField(entry.getKey(), new int[]{entry.getValue()});
+            }
+            return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
+        }
+    }
+
+    public static class MultiLineChart extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public MultiLineChart(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                if (entry.getValue() == 0) {
+                    // Skip this invalid
+                    continue;
+                }
+                allSkipped = false;
+                valuesBuilder.appendField(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
+        }
+    }
+
+    public static class AdvancedPie extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public AdvancedPie(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                if (entry.getValue() == 0) {
+                    // Skip this invalid
+                    continue;
+                }
+                allSkipped = false;
+                valuesBuilder.appendField(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
+        }
+    }
+
+    public abstract static class CustomChart {
+
+        private final String chartId;
+
+        protected CustomChart(String chartId) {
+            if (chartId == null) {
+                throw new IllegalArgumentException("chartId must not be null");
+            }
+            this.chartId = chartId;
+        }
+
+        public JsonObjectBuilder.JsonObject getRequestJsonObject(
+                BiConsumer<String, Throwable> errorLogger, boolean logErrors) {
+            JsonObjectBuilder builder = new JsonObjectBuilder();
+            builder.appendField("chartId", chartId);
+            try {
+                JsonObjectBuilder.JsonObject data = getChartData();
+                if (data == null) {
+                    // If the data is null we don't send the chart.
+                    return null;
+                }
+                builder.appendField("data", data);
+            } catch (Throwable t) {
+                if (logErrors) {
+                    errorLogger.accept("Failed to get data for custom chart with id " + chartId, t);
+                }
+                return null;
+            }
+            return builder.build();
+        }
+
+        protected abstract JsonObjectBuilder.JsonObject getChartData() throws Exception;
+    }
+
+    public static class SingleLineChart extends CustomChart {
+
+        private final Callable<Integer> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SingleLineChart(String chartId, Callable<Integer> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            int value = callable.call();
+            if (value == 0) {
+                // Null = skip the chart
+                return null;
+            }
+            return new JsonObjectBuilder().appendField("value", value).build();
+        }
+    }
+
+    public static class SimplePie extends CustomChart {
+
+        private final Callable<String> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SimplePie(String chartId, Callable<String> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            String value = callable.call();
+            if (value == null || value.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            return new JsonObjectBuilder().appendField("value", value).build();
+        }
+    }
+
+    public static class DrilldownPie extends CustomChart {
+
+        private final Callable<Map<String, Map<String, Integer>>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId  The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public DrilldownPie(String chartId, Callable<Map<String, Map<String, Integer>>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        public JsonObjectBuilder.JsonObject getChartData() throws Exception {
+            JsonObjectBuilder valuesBuilder = new JsonObjectBuilder();
+            Map<String, Map<String, Integer>> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean reallyAllSkipped = true;
+            for (Map.Entry<String, Map<String, Integer>> entryValues : map.entrySet()) {
+                JsonObjectBuilder valueBuilder = new JsonObjectBuilder();
+                boolean allSkipped = true;
+                for (Map.Entry<String, Integer> valueEntry : map.get(entryValues.getKey()).entrySet()) {
+                    valueBuilder.appendField(valueEntry.getKey(), valueEntry.getValue());
+                    allSkipped = false;
+                }
+                if (!allSkipped) {
+                    reallyAllSkipped = false;
+                    valuesBuilder.appendField(entryValues.getKey(), valueBuilder.build());
+                }
+            }
+            if (reallyAllSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            return new JsonObjectBuilder().appendField("values", valuesBuilder.build()).build();
+        }
+    }
+
+    /**
+     * An extremely simple JSON builder.
+     *
+     * <p>While this class is neither feature-rich nor the most performant one, it's sufficient enough
+     * for its use-case.
+     */
+    public static class JsonObjectBuilder {
+
+        private StringBuilder builder = new StringBuilder();
+
+        private boolean hasAtLeastOneField = false;
+
+        public JsonObjectBuilder() {
+            builder.append("{");
+        }
+
+        /**
+         * Escapes the given string like stated in https://www.ietf.org/rfc/rfc4627.txt.
+         *
+         * <p>This method escapes only the necessary characters '"', '\'. and '\u0000' - '\u001F'.
+         * Compact escapes are not used (e.g., '\n' is escaped as "\u000a" and not as "\n").
+         *
+         * @param value The value to escape.
+         * @return The escaped value.
+         */
+        private static String escape(String value) {
+            final StringBuilder builder = new StringBuilder();
+            for (int i = 0; i < value.length(); i++) {
+                char c = value.charAt(i);
+                if (c == '"') {
+                    builder.append("\\\"");
+                } else if (c == '\\') {
+                    builder.append("\\\\");
+                } else if (c <= '\u000F') {
+                    builder.append("\\u000").append(Integer.toHexString(c));
+                } else if (c <= '\u001F') {
+                    builder.append("\\u00").append(Integer.toHexString(c));
+                } else {
+                    builder.append(c);
+                }
+            }
+            return builder.toString();
+        }
+
+        /**
+         * Appends a null field to the JSON.
+         *
+         * @param key The key of the field.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendNull(String key) {
+            appendFieldUnescaped(key, "null");
+            return this;
+        }
+
+        /**
+         * Appends a string field to the JSON.
+         *
+         * @param key   The key of the field.
+         * @param value The value of the field.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendField(String key, String value) {
+            if (value == null) {
+                throw new IllegalArgumentException("JSON value must not be null");
+            }
+            appendFieldUnescaped(key, "\"" + escape(value) + "\"");
+            return this;
+        }
+
+        /**
+         * Appends an integer field to the JSON.
+         *
+         * @param key   The key of the field.
+         * @param value The value of the field.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendField(String key, int value) {
+            appendFieldUnescaped(key, String.valueOf(value));
+            return this;
+        }
+
+        /**
+         * Appends an object to the JSON.
+         *
+         * @param key    The key of the field.
+         * @param object The object.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendField(String key, JsonObject object) {
+            if (object == null) {
+                throw new IllegalArgumentException("JSON object must not be null");
+            }
+            appendFieldUnescaped(key, object.toString());
+            return this;
+        }
+
+        /**
+         * Appends a string array to the JSON.
+         *
+         * @param key    The key of the field.
+         * @param values The string array.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendField(String key, String[] values) {
+            if (values == null) {
+                throw new IllegalArgumentException("JSON values must not be null");
+            }
+            String escapedValues =
+                    Arrays.stream(values)
+                            .map(value -> "\"" + escape(value) + "\"")
+                            .collect(Collectors.joining(","));
+            appendFieldUnescaped(key, "[" + escapedValues + "]");
+            return this;
+        }
+
+        /**
+         * Appends an integer array to the JSON.
+         *
+         * @param key    The key of the field.
+         * @param values The integer array.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendField(String key, int[] values) {
+            if (values == null) {
+                throw new IllegalArgumentException("JSON values must not be null");
+            }
+            String escapedValues =
+                    Arrays.stream(values).mapToObj(String::valueOf).collect(Collectors.joining(","));
+            appendFieldUnescaped(key, "[" + escapedValues + "]");
+            return this;
+        }
+
+        /**
+         * Appends an object array to the JSON.
+         *
+         * @param key    The key of the field.
+         * @param values The integer array.
+         * @return A reference to this object.
+         */
+        public JsonObjectBuilder appendField(String key, JsonObject[] values) {
+            if (values == null) {
+                throw new IllegalArgumentException("JSON values must not be null");
+            }
+            String escapedValues =
+                    Arrays.stream(values).map(JsonObject::toString).collect(Collectors.joining(","));
+            appendFieldUnescaped(key, "[" + escapedValues + "]");
+            return this;
+        }
+
+        /**
+         * Appends a field to the object.
+         *
+         * @param key          The key of the field.
+         * @param escapedValue The escaped value of the field.
+         */
+        private void appendFieldUnescaped(String key, String escapedValue) {
+            if (builder == null) {
+                throw new IllegalStateException("JSON has already been built");
+            }
+            if (key == null) {
+                throw new IllegalArgumentException("JSON key must not be null");
+            }
+            if (hasAtLeastOneField) {
+                builder.append(",");
+            }
+            builder.append("\"").append(escape(key)).append("\":").append(escapedValue);
+            hasAtLeastOneField = true;
+        }
+
+        /**
+         * Builds the JSON string and invalidates this builder.
+         *
+         * @return The built JSON string.
+         */
+        public JsonObject build() {
+            if (builder == null) {
+                throw new IllegalStateException("JSON has already been built");
+            }
+            JsonObject object = new JsonObject(builder.append("}").toString());
+            builder = null;
+            return object;
+        }
+
+        /**
+         * A super simple representation of a JSON object.
+         *
+         * <p>This class only exists to make methods of the {@link JsonObjectBuilder} type-safe and not
+         * allow a raw string inputs for methods like {@link JsonObjectBuilder#appendField(String,
+         * JsonObject)}.
+         */
+        public static class JsonObject {
+
+            private final String value;
+
+            private JsonObject(String value) {
+                this.value = value;
+            }
+
+            @Override
+            public String toString() {
+                return value;
+            }
+        }
+    }
+}

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event;
@@ -55,7 +49,11 @@ public abstract class PacketEvent implements CallableEvent {
         this.timestamp = timestamp;
     }
 
-    public void callPacketEvent(final PacketListenerDynamic listener) {
-        listener.onPacketEvent(this);
+    public void callPacketEventExternal(final PacketListenerAbstract listener) {
+        listener.onPacketEventExternal(this);
+    }
+
+    public boolean isInbuilt() {
+        return false;
     }
 }

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event;
@@ -29,7 +23,7 @@ package io.github.retrooper.packetevents.event;
  * Implement this interface in your listener if you are using the legacy event system.
  *
  * @author retrooper
- * @see PacketListenerDynamic
+ * @see PacketListenerAbstract
  * @since 1.2.6
  * @deprecated There is a new and better listener for the new event system.
  */

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

@@ -0,0 +1,201 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.event;
+
+import io.github.retrooper.packetevents.event.impl.*;
+import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
+import io.github.retrooper.packetevents.utils.immutableset.ImmutableSetCustom;
+
+/**
+ * Abstract packet listener.
+ *
+ * @author retrooper
+ * @since 1.8
+ */
+public abstract class PacketListenerAbstract {
+    private final PacketListenerPriority priority;
+    public ImmutableSetCustom<Byte> serverSidedStatusAllowance;
+    public ImmutableSetCustom<Byte> serverSidedLoginAllowance;
+    public ImmutableSetCustom<Byte> serverSidedPlayAllowance;
+
+    public ImmutableSetCustom<Byte> clientSidedStatusAllowance;
+    public ImmutableSetCustom<Byte> clientSidedHandshakeAllowance;
+    public ImmutableSetCustom<Byte> clientSidedLoginAllowance;
+    public ImmutableSetCustom<Byte> clientSidedPlayAllowance;
+
+    @Deprecated
+    public PacketListenerAbstract(final PacketEventPriority priority) {
+        this(PacketListenerPriority.getById(priority.getPriorityValue()));
+    }
+
+    public PacketListenerAbstract(PacketListenerPriority priority) {
+        this.priority = priority;
+        this.serverSidedStatusAllowance = null;
+        this.serverSidedLoginAllowance = null;
+        this.serverSidedPlayAllowance = null;
+
+        this.clientSidedStatusAllowance = null;
+        this.clientSidedHandshakeAllowance = null;
+        this.clientSidedLoginAllowance = null;
+        this.clientSidedPlayAllowance = null;
+    }
+
+
+    public PacketListenerAbstract() {
+        this(PacketListenerPriority.NORMAL);
+    }
+
+    public PacketListenerPriority getPriority() {
+        return priority;
+    }
+
+    public void onPacketStatusReceive(PacketStatusReceiveEvent event) {
+    }
+
+    public void onPacketStatusSend(PacketStatusSendEvent event) {
+    }
+
+    public void onPacketHandshakeReceive(PacketHandshakeReceiveEvent event) {
+    }
+
+    public void onPacketLoginReceive(PacketLoginReceiveEvent event) {
+    }
+
+    public void onPacketLoginSend(PacketLoginSendEvent event) {
+    }
+
+    public void onPacketPlayReceive(PacketPlayReceiveEvent event) {
+    }
+
+    public void onPacketPlaySend(PacketPlaySendEvent event) {
+    }
+
+    public void onPostPacketPlayReceive(PostPacketPlayReceiveEvent event) {
+    }
+
+    public void onPostPacketPlaySend(PostPacketPlaySendEvent event) {
+    }
+
+    public void onPostPlayerInject(PostPlayerInjectEvent event) {
+    }
+
+    public void onPlayerInject(PlayerInjectEvent event) {
+    }
+
+    public void onPlayerEject(PlayerEjectEvent event) {
+    }
+
+    public void onPacketEventExternal(PacketEvent event) {
+    }
+
+    public final void addServerSidedStatusFilter(Byte... statusPacketIDs) {
+        if (this.serverSidedStatusAllowance == null) {
+            this.serverSidedStatusAllowance = new ImmutableSetCustom<>(statusPacketIDs);
+        } else {
+            this.serverSidedStatusAllowance.addAll(statusPacketIDs);
+        }
+    }
+
+    public final void addServerSidedLoginFilter(Byte... loginPacketIDs) {
+        if (this.serverSidedLoginAllowance == null) {
+            this.serverSidedLoginAllowance = new ImmutableSetCustom<>(loginPacketIDs);
+        } else {
+            this.serverSidedLoginAllowance.addAll(loginPacketIDs);
+        }
+    }
+
+    public final void addServerSidedPlayFilter(Byte... playPacketIDs) {
+        if (this.serverSidedPlayAllowance == null) {
+            this.serverSidedPlayAllowance = new ImmutableSetCustom<>(playPacketIDs);
+        } else {
+            this.serverSidedPlayAllowance.addAll(playPacketIDs);
+        }
+    }
+
+    public final void addClientSidedStatusFilter(Byte... statusPacketIDs) {
+        if (this.clientSidedStatusAllowance == null) {
+            this.clientSidedStatusAllowance = new ImmutableSetCustom<>(statusPacketIDs);
+        } else {
+            this.clientSidedStatusAllowance.addAll(statusPacketIDs);
+        }
+    }
+
+    public final void addClientSidedHandshakeFilter(Byte... handshakePacketIDs) {
+        if (this.clientSidedHandshakeAllowance == null) {
+            this.clientSidedHandshakeAllowance = new ImmutableSetCustom<>(handshakePacketIDs);
+        } else {
+            this.clientSidedHandshakeAllowance.addAll(handshakePacketIDs);
+        }
+    }
+
+    public final void addClientSidedLoginFilter(Byte... loginPacketIDs) {
+        if (this.clientSidedLoginAllowance == null) {
+            this.clientSidedLoginAllowance = new ImmutableSetCustom<>(loginPacketIDs);
+        } else {
+            this.clientSidedLoginAllowance.addAll(loginPacketIDs);
+        }
+    }
+
+    public final void addClientSidedPlayFilter(Byte... playPacketIDs) {
+        if (this.clientSidedPlayAllowance == null) {
+            this.clientSidedPlayAllowance = new ImmutableSetCustom<>(playPacketIDs);
+        } else {
+            this.clientSidedPlayAllowance.addAll(playPacketIDs);
+        }
+    }
+
+    public final void filterAll() {
+        filterServerSidedStatus();
+        filterServerSidedLogin();
+        filterServerSidedPlay();
+
+        filterClientSidedStatus();
+        filterClientSidedHandshake();
+        filterClientSidedLogin();
+        filterClientSidedPlay();
+    }
+
+    public final void filterServerSidedStatus() {
+        this.serverSidedStatusAllowance = new ImmutableSetCustom<>();
+    }
+
+    public final void filterServerSidedLogin() {
+        this.serverSidedLoginAllowance = new ImmutableSetCustom<>();
+    }
+
+    public final void filterServerSidedPlay() {
+        this.serverSidedPlayAllowance = new ImmutableSetCustom<>();
+    }
+
+    public final void filterClientSidedStatus() {
+        this.clientSidedStatusAllowance = new ImmutableSetCustom<>();
+    }
+
+    public final void filterClientSidedHandshake() {
+        this.clientSidedHandshakeAllowance = new ImmutableSetCustom<>();
+    }
+
+    public final void filterClientSidedLogin() {
+        this.clientSidedLoginAllowance = new ImmutableSetCustom<>();
+    }
+
+    public final void filterClientSidedPlay() {
+        this.clientSidedPlayAllowance = new ImmutableSetCustom<>();
+    }
+}

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

@@ -1,91 +1,45 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event;
 
-import io.github.retrooper.packetevents.event.impl.*;
 import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
 
 /**
- * Dynamic packet event listener.
- * Implement whatever event method you need.
- * Nothing will happen if you don't implement an event method.
+ * Deprecated abstract PacketListener.
+ * Please use {@link PacketListenerAbstract}, but this class will still work for a bit.
  *
  * @author retrooper
  * @since 1.7.7
  */
-public abstract class PacketListenerDynamic {
-    private final PacketEventPriority priority;
-
+@Deprecated
+public abstract class PacketListenerDynamic extends PacketListenerAbstract {
+    @Deprecated
     public PacketListenerDynamic(final PacketEventPriority priority) {
-        this.priority = priority;
+        super(priority);
     }
 
+    public PacketListenerDynamic(PacketListenerPriority priority) {
+        super(priority);
+    }
+
+
     public PacketListenerDynamic() {
-        this(PacketEventPriority.NORMAL);
-    }
-
-    public PacketEventPriority getPriority() {
-        return priority;
-    }
-
-    public void onPacketStatusReceive(PacketStatusReceiveEvent event) {
-
-    }
-
-    public void onPacketStatusSend(PacketStatusSendEvent event) {
-    }
-
-    public void onPacketLoginReceive(PacketLoginReceiveEvent event) {
-    }
-
-    public void onPacketLoginSend(PacketLoginSendEvent event) {
-
-    }
-
-    public void onPacketPlayReceive(PacketPlayReceiveEvent event) {
-    }
-
-    public void onPacketPlaySend(PacketPlaySendEvent event) {
-    }
-
-    public void onPostPacketPlayReceive(PostPacketPlayReceiveEvent event) {
-    }
-
-    public void onPostPacketPlaySend(PostPacketPlaySendEvent event) {
-    }
-
-    public void onPostPlayerInject(PostPlayerInjectEvent event) {
-
-    }
-
-    public void onPlayerInject(PlayerInjectEvent event) {
-    }
-
-    public void onPlayerEject(PlayerEjectEvent event) {
-    }
-
-    public void onPacketEvent(PacketEvent event) {
+        super(PacketListenerPriority.NORMAL);
     }
 }

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

@@ -0,0 +1,74 @@
+/*
+ *
+ *  * This file is part of packetevents - https://github.com/retrooper/packetevents
+ *  * Copyright (C) 2016-2021 retrooper and contributors
+ *  *
+ *  * This program is free software: you can redistribute it and/or modify
+ *  * it under the terms of the GNU General Public License as published by
+ *  * the Free Software Foundation, either version 3 of the License, or
+ *  * (at your option) any later version.
+ *  *
+ *  * This program is distributed in the hope that it will be useful,
+ *  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  * GNU General Public License for more details.
+ *  *
+ *  * You should have received a copy of the GNU General Public License
+ *  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package io.github.retrooper.packetevents.event;
+
+/**
+ * The priority of packet listeners affect the order they will be invoked in.
+ * The lowest priority listeners are invoked first, the most high ones are invoked last.
+ * The most high priority listener has the final decider on an event being cancelled.
+ * This priority can be specified in the PacketListenerAbstract constructor.
+ * If you don't specify a priority in the constructor, it will use the {@link #NORMAL} priority.
+ *
+ * @author retrooper
+ * @since 1.8
+ */
+public enum PacketListenerPriority {
+    /**
+     * Listener is of very low importance.
+     * This listener will be ran first.
+     */
+    LOWEST,
+
+    /**
+     * Listener is of low importance.
+     */
+    LOW,
+
+    /**
+     * Default listener priority.
+     * Listener is neither important nor unimportant and may run normally.
+     */
+    NORMAL,
+
+    /**
+     * Listener is of high importance.
+     */
+    HIGH,
+
+    /**
+     * Listener is of critical importance and wants to decide the cancellation of an event.
+     */
+    HIGHEST,
+
+    /**
+     * Listener is purely trying to decide the cancellation of an event.
+     * This listener should be ran last.
+     */
+    MONITOR;
+
+    public static PacketListenerPriority getById(byte id) {
+        return values()[id];
+    }
+
+    public byte getId() {
+        return (byte) ordinal();
+    }
+}

src/main/java/io/github/retrooper/packetevents/event/annotation/PacketHandler.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.annotation;

src/main/java/io/github/retrooper/packetevents/event/eventtypes/CallableEvent.java

@@ -1,38 +1,32 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.eventtypes;
 
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.impl.PacketPlayReceiveEvent;
 
 /**
  * The {@link PacketEvent} implements this interface.
- * Every inbuilt event should implement the {@link #call(PacketListenerDynamic)} method.
+ * Every inbuilt event should implement the {@link #call(PacketListenerAbstract)} method.
  * If you are making a custom event, don't implement this.
- * The {@link PacketListenerDynamic#onPacketEvent(PacketEvent)} method is called for every event,
+ * The {@link PacketListenerAbstract#onPacketEventExternal(PacketEvent)} method is called for every event that is not in-built.
  * including custom events.
  *
  * @author retrooper
@@ -40,5 +34,5 @@ import io.github.retrooper.packetevents.event.impl.PacketPlayReceiveEvent;
  * @since 1.8
  */
 public interface CallableEvent {
-    void call(PacketListenerDynamic listener);
+    void call(PacketListenerAbstract listener);
 }

src/main/java/io/github/retrooper/packetevents/event/eventtypes/CancellableEvent.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.eventtypes;
@@ -54,18 +48,4 @@ public interface CancellableEvent {
      * @param val Is the event cancelled
      */
     void setCancelled(boolean val);
-
-    /**
-     * Cancel the event.
-     * You can achieve the same result by just using {@link #setCancelled(boolean)}
-     */
-    @Deprecated
-    void cancel();
-
-    /**
-     * Uncancel the event.
-     * You can achieve the same result by just using {@link #setCancelled(boolean)}
-     */
-    @Deprecated
-    void uncancel();
 }

src/main/java/io/github/retrooper/packetevents/event/eventtypes/CancellableNMSPacketEvent.java

@@ -1,3 +1,21 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 package io.github.retrooper.packetevents.event.eventtypes;
 
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
@@ -15,16 +33,6 @@ public abstract class CancellableNMSPacketEvent extends NMSPacketEvent implement
         super(address, packet);
     }
 
-    @Override
-    public void cancel() {
-        cancelled = true;
-    }
-
-    @Override
-    public void uncancel() {
-        cancelled = false;
-    }
-
     @Override
     public boolean isCancelled() {
         return cancelled;

src/main/java/io/github/retrooper/packetevents/event/eventtypes/NMSPacketEvent.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.eventtypes;
@@ -42,17 +36,18 @@ import java.net.InetSocketAddress;
  */
 public abstract class NMSPacketEvent extends PacketEvent implements CallableEvent {
     private final InetSocketAddress socketAddress;
+    private final byte packetID;
     protected NMSPacket packet;
     protected boolean cancelled;
 
     public NMSPacketEvent(Object channel, NMSPacket packet) {
-        this.socketAddress = ChannelUtils.getSocketAddress(channel);
-        this.packet = packet;
+        this(ChannelUtils.getSocketAddress(channel), packet);//Call the constructor below
     }
 
     public NMSPacketEvent(InetSocketAddress address, NMSPacket packet) {
         this.socketAddress = address;
         this.packet = packet;
+        packetID = PacketType.packetIDMap.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
     }
 
     /**
@@ -65,11 +60,10 @@ public abstract class NMSPacketEvent extends PacketEvent implements CallableEven
     }
 
     /**
-     * This method returns the name of the packet.
-     * To get the name of the packet we get the class of the packet and then the name of the class.
+     * This method returns the NMS name of the packet.
+     * To get the name of the packet we get the class of the packet and then the simple name of the class.
      * See also: {@link Class#getSimpleName()}
      * We cache the name after the first call to improve performance.
-     * Java 8 does not cache the name.
      * It is not recommended to call this method unless you NEED it.
      * If you are comparing packet types, use the {@link PacketType} byte system.
      * You would only need the packet name if packet type system doesn't contain your desired packet yet.
@@ -104,5 +98,12 @@ public abstract class NMSPacketEvent extends PacketEvent implements CallableEven
      *
      * @return Packet ID.
      */
-    public abstract byte getPacketId();
+    public byte getPacketId() {
+        return packetID;
+    }
+
+    @Override
+    public boolean isInbuilt() {
+        return true;
+    }
 }

src/main/java/io/github/retrooper/packetevents/event/eventtypes/PlayerEvent.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.eventtypes;

src/main/java/io/github/retrooper/packetevents/event/eventtypes/PostTaskEvent.java

@@ -0,0 +1,39 @@
+/*
+ *
+ *  * This file is part of packetevents - https://github.com/retrooper/packetevents
+ *  * Copyright (C) 2016-2021 retrooper and contributors
+ *  *
+ *  * This program is free software: you can redistribute it and/or modify
+ *  * it under the terms of the GNU General Public License as published by
+ *  * the Free Software Foundation, either version 3 of the License, or
+ *  * (at your option) any later version.
+ *  *
+ *  * This program is distributed in the hope that it will be useful,
+ *  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  * GNU General Public License for more details.
+ *  *
+ *  * You should have received a copy of the GNU General Public License
+ *  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package io.github.retrooper.packetevents.event.eventtypes;
+
+import io.github.retrooper.packetevents.event.impl.PacketPlayReceiveEvent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Every event that allows you to schedule a task that will run after the action associated with the event.
+ *
+ * @author retrooper
+ * @since 1.8
+ */
+public interface PostTaskEvent {
+    boolean isPostTaskAvailable();
+
+    @Nullable Runnable getPostTask();
+
+    void setPostTask(@NotNull Runnable postTask);
+}

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

@@ -0,0 +1,52 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.event.impl;
+
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
+import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+
+import java.net.InetSocketAddress;
+
+/**
+ * The {@code PacketHandshakeReceiveEvent} event is fired whenever the a HANDSHAKE packet is received from a client.
+ * The {@code PacketHandshakeReceiveEvent} has no Bukkit player, the player object is null in this state.
+ * Use the {@link #getSocketAddress()} to identify who sends the packet.
+ *
+ * @author retrooper
+ * @see <a href="https://wiki.vg/Protocol#Handshaking">https://wiki.vg/Protocol#Handshaking</a>
+ * @since 1.8
+ */
+public class PacketHandshakeReceiveEvent extends CancellableNMSPacketEvent {
+    public PacketHandshakeReceiveEvent(final Object channel, final NMSPacket packet) {
+        super(channel, packet);
+    }
+
+    public PacketHandshakeReceiveEvent(final InetSocketAddress socketAddress, final NMSPacket packet) {
+        super(socketAddress, packet);
+    }
+
+    @Override
+    public void call(PacketListenerAbstract listener) {
+        if (listener.clientSidedLoginAllowance == null || listener.clientSidedLoginAllowance.contains(getPacketId())) {
+            listener.onPacketHandshakeReceive(this);
+        }
+    }
+}
+

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

@@ -1,40 +1,32 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 
 import java.net.InetSocketAddress;
 
 /**
  * The {@code PacketLoginReceiveEvent} event is fired whenever the a LOGIN packet is received from a client.
- * The {@code PacketLoginReceiveEvent} does not have to do with a bukkit player object due to
- * the player object being null in this state.
+ * The {@code PacketLoginReceiveEvent} has no Bukkit player, the player object is null in this state.
  * Use the {@link #getSocketAddress()} to identify who sends the packet.
  *
  * @author retrooper
@@ -50,22 +42,10 @@ public class PacketLoginReceiveEvent extends CancellableNMSPacketEvent {
         super(socketAddress, packet);
     }
 
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Login.Client.HANDSHAKE) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Login.Client.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
-    }
-
-    @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPacketLoginReceive(this);
+    public void call(PacketListenerAbstract listener) {
+        if (listener.clientSidedLoginAllowance == null || listener.clientSidedLoginAllowance.contains(getPacketId())) {
+            listener.onPacketLoginReceive(this);
+        }
     }
 }

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

@@ -1,47 +1,42 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.event.eventtypes.PostTaskEvent;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import org.jetbrains.annotations.NotNull;
 
 import java.net.InetSocketAddress;
 
 /**
  * The {@code PacketLoginSendEvent} event is fired whenever the a LOGIN packet is being planned to be sent to the client.
- * The {@code PacketLoginSendEvent} does not have to do with a bukkit player object due to
- * the player object being null in this state.
+ * The {@code PacketLoginSendEvent} has no Bukkit player, the player object is null in this state.
  * Use the {@link #getSocketAddress()} to identify who sends the packet.
  *
  * @author retrooper
  * @see <a href="https://wiki.vg/Protocol#Login">https://wiki.vg/Protocol#Login</a>
  * @since 1.8
  */
-public class PacketLoginSendEvent extends CancellableNMSPacketEvent {
+public class PacketLoginSendEvent extends CancellableNMSPacketEvent implements PostTaskEvent {
+    private Runnable postTask;
     public PacketLoginSendEvent(Object channel, NMSPacket packet) {
         super(channel, packet);
     }
@@ -51,12 +46,24 @@ public class PacketLoginSendEvent extends CancellableNMSPacketEvent {
     }
 
     @Override
-    public byte getPacketId() {
-        return PacketType.Login.Server.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
+    public boolean isPostTaskAvailable() {
+        return postTask != null;
     }
 
     @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPacketLoginSend(this);
+    public Runnable getPostTask() {
+        return postTask;
+    }
+
+    @Override
+    public void setPostTask(@NotNull Runnable postTask) {
+        this.postTask = postTask;
+    }
+
+    @Override
+    public void call(PacketListenerAbstract listener) {
+        if (listener.serverSidedLoginAllowance == null || listener.serverSidedLoginAllowance.contains(getPacketId())) {
+            listener.onPacketLoginSend(this);
+        }
     }
 }

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

@@ -1,33 +1,26 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
@@ -45,7 +38,7 @@ import org.jetbrains.annotations.NotNull;
 public final class PacketPlayReceiveEvent extends CancellableNMSPacketEvent implements PlayerEvent {
     private final Player player;
 
-    public PacketPlayReceiveEvent(final Player player, final Object channel, final NMSPacket packet) {
+    public PacketPlayReceiveEvent(Player player, Object channel, NMSPacket packet) {
         super(channel, packet);
         this.player = player;
     }
@@ -62,31 +55,10 @@ public final class PacketPlayReceiveEvent extends CancellableNMSPacketEvent impl
         return player;
     }
 
-    /**
-     * This method returns the socket address of the packet sender.
-     * This address if guaranteed to never be null.
-     * You could use this to identify who is sending packets
-     * whenever the player object is null.
-     *
-     * @return Packet sender's socket address.
-     */
-
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Play.Client.USE_ENTITY) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Play.Client.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
-    }
-
-    @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPacketPlayReceive(this);
+    public void call(PacketListenerAbstract listener) {
+        if (listener.clientSidedPlayAllowance == null || listener.clientSidedPlayAllowance.contains(getPacketId())) {
+            listener.onPacketPlayReceive(this);
+        }
     }
 }

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

@@ -1,39 +1,34 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.event.eventtypes.PostTaskEvent;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 /**
- * The {@code PacketPlaySendEvent} event is fired whenever the a PLAY packet is about to be sent.
+ * The {@code PacketPlaySendEvent} event is fired whenever the a PLAY packet is about to be sent to a client.
  * Cancelling this event will result in preventing minecraft from sending the packet.
  * The player won't receive the packet if you cancel it.
  *
@@ -41,8 +36,9 @@ import org.jetbrains.annotations.NotNull;
  * @see <a href="https://wiki.vg/Protocol#Play">https://wiki.vg/Protocol#Play</a>
  * @since 1.2.6
  */
-public final class PacketPlaySendEvent extends CancellableNMSPacketEvent implements PlayerEvent {
+public final class PacketPlaySendEvent extends CancellableNMSPacketEvent implements PlayerEvent, PostTaskEvent {
     private final Player player;
+    private Runnable postTask;
 
     public PacketPlaySendEvent(final Player player, final Object channel, final NMSPacket packet) {
         super(channel, packet);
@@ -61,23 +57,26 @@ public final class PacketPlaySendEvent extends CancellableNMSPacketEvent impleme
         return player;
     }
 
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Play.Server.KEEP_ALIVE) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Play.Server.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
+    public boolean isPostTaskAvailable() {
+        return postTask != null;
     }
 
     @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPacketPlaySend(this);
+    public Runnable getPostTask() {
+        return postTask;
+    }
+
+    @Override
+    public void setPostTask(@NotNull Runnable postTask) {
+        this.postTask = postTask;
+    }
+
+    @Override
+    public void call(PacketListenerAbstract listener) {
+        if (listener.serverSidedPlayAllowance == null || listener.serverSidedPlayAllowance.contains(getPacketId())) {
+            listener.onPacketPlaySend(this);
+        }
     }
 }
 

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

@@ -1,40 +1,32 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 
 import java.net.InetSocketAddress;
 
 /**
  * The {@code PacketStatusReceiveEvent} event is fired whenever the server receives a STATUS packet from a client.
- * The {@code PacketStatusSendEvent} does not have to do with a bukkit player object due to
- * the player object being null in this state.
+ * The {@code PacketStatusSendEvent} has no Bukkit player, the player object is null in this state.
  * Use the {@link #getSocketAddress()} to identify who sends the packet.
  *
  * @author retrooper
@@ -50,22 +42,10 @@ public class PacketStatusReceiveEvent extends CancellableNMSPacketEvent {
         super(socketAddress, packet);
     }
 
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Status.Client.PING) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Status.Client.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
-    }
-
-    @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPacketStatusReceive(this);
+    public void call(PacketListenerAbstract listener) {
+        if (listener.clientSidedStatusAllowance == null || listener.clientSidedStatusAllowance.contains(getPacketId())) {
+            listener.onPacketStatusReceive(this);
+        }
     }
 }

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

@@ -1,49 +1,45 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableNMSPacketEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.event.eventtypes.PostTaskEvent;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.net.InetSocketAddress;
 
 /**
- * The {@code PacketStatusSendEvent} event is fired whenever the server wants to send a STATUS packet to the client.
+ * The {@code PacketStatusSendEvent} event is fired whenever the server wants to send a STATUS packet to a client.
  * This class implements {@link CancellableEvent}.
- * The {@code PacketStatusSendEvent} does not have to do with a bukkit player object due to
- * the player object being null in this state.
+ * The {@code PacketStatusSendEvent} has no Bukkit player, the player object is null in this state.
  * Use the {@link #getSocketAddress()} to identify who sends the packet.
  *
  * @author retrooper
  * @see <a href="https://wiki.vg/Protocol#Status">https://wiki.vg/Protocol#Status</a>
  * @since 1.8
  */
-public class PacketStatusSendEvent extends CancellableNMSPacketEvent {
+public class PacketStatusSendEvent extends CancellableNMSPacketEvent implements PostTaskEvent {
+    private Runnable postTask;
     public PacketStatusSendEvent(Object channel, NMSPacket packet) {
         super(channel, packet);
     }
@@ -52,22 +48,25 @@ public class PacketStatusSendEvent extends CancellableNMSPacketEvent {
         super(address, packet);
     }
 
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Status.Server.PONG) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Status.Server.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
+    public boolean isPostTaskAvailable() {
+        return postTask != null;
     }
 
     @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPacketStatusSend(this);
+    public Runnable getPostTask() {
+        return postTask;
+    }
+
+    @Override
+    public void setPostTask(@NotNull Runnable postTask) {
+        this.postTask = postTask;
+    }
+
+    @Override
+    public void call(PacketListenerAbstract listener) {
+        if (listener.serverSidedStatusAllowance == null || listener.serverSidedStatusAllowance.contains(getPacketId())) {
+            listener.onPacketStatusSend(this);
+        }
     }
 }

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

@@ -1,41 +1,32 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
-import io.github.retrooper.packetevents.settings.PacketEventsSettings;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
 /**
  * The {@code PlayerEjectEvent} event is fired whenever a player is ejected.
- * A player is ejected by PacketEvents whenever they quit the server.
  * This class implements {@link CancellableEvent} and {@link PlayerEvent}.
  *
  * @author retrooper
@@ -44,22 +35,10 @@ import org.jetbrains.annotations.NotNull;
  */
 public final class PlayerEjectEvent extends PacketEvent implements CancellableEvent, PlayerEvent {
     private final Player player;
-    private final boolean async;
     private boolean cancelled;
 
-    public PlayerEjectEvent(final Player player, final boolean isAsync) {
+    public PlayerEjectEvent(final Player player) {
         this.player = player;
-        this.async = isAsync;
-    }
-
-    @Override
-    public void cancel() {
-        cancelled = true;
-    }
-
-    @Override
-    public void uncancel() {
-        cancelled = false;
     }
 
     @Override
@@ -85,20 +64,21 @@ public final class PlayerEjectEvent extends PacketEvent implements CancellableEv
     }
 
     /**
-     * This method returns if the event has been called asynchronously.
-     * If the {@link PacketEventsSettings#shouldEjectAsync()} is enabled, the event will be called asynchronously
-     * and the player will be ejected asynchronously.
-     * The {@link PacketEventsSettings} can be accessed here:
-     *
-     * @return Is the ejection asynchronous.
-     * @see PacketEvents#getSettings()
+     * @return Is the event called async?
+     * @deprecated Now always false
      */
+    @Deprecated
     public boolean isAsync() {
-        return async;
+        return false;
     }
 
     @Override
-    public void call(PacketListenerDynamic listener) {
+    public void call(PacketListenerAbstract listener) {
         listener.onPlayerEject(this);
     }
+
+    @Override
+    public boolean isInbuilt() {
+        return true;
+    }
 }

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

@@ -1,38 +1,30 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
 import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
-import io.github.retrooper.packetevents.settings.PacketEventsSettings;
 import io.github.retrooper.packetevents.utils.netty.channel.ChannelUtils;
 import org.bukkit.entity.Player;
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.net.InetSocketAddress;
@@ -49,23 +41,11 @@ import java.net.InetSocketAddress;
 public final class PlayerInjectEvent extends PacketEvent implements CancellableEvent, PlayerEvent {
     private final Player player;
     private final InetSocketAddress address;
-    private final boolean async;
     private boolean cancelled;
 
-    public PlayerInjectEvent(final Player player, final boolean isAsync) {
+    public PlayerInjectEvent(final Player player) {
         this.player = player;
-        this.address = ChannelUtils.getSocketAddress(PacketEvents.get().packetHandlerInternal.getChannel(player));
-        this.async = isAsync;
-    }
-
-    @Override
-    public void cancel() {
-        cancelled = true;
-    }
-
-    @Override
-    public void uncancel() {
-        cancelled = false;
+        this.address = ChannelUtils.getSocketAddress(PacketEvents.get().getPlayerUtils().getChannel(player));
     }
 
     @Override
@@ -95,26 +75,26 @@ public final class PlayerInjectEvent extends PacketEvent implements CancellableE
      *
      * @return Socket address of the injecting player.
      */
-    @NotNull
+    @Nullable
     public InetSocketAddress getSocketAddress() {
         return address;
     }
 
     /**
-     * This method returns if the event has been called asynchronously.
-     * If the {@link PacketEventsSettings#shouldInjectAsync()} is enabled, the event will be called asynchronously
-     * and the player will be injected asynchronously.
-     * The {@link PacketEventsSettings} can be accessed here:
-     *
-     * @return Is the injection asynchronous.
-     * @see PacketEvents#getSettings()
+     * @deprecated Will always be false
      */
+    @Deprecated
     public boolean isAsync() {
-        return async;
+        return false;
     }
 
     @Override
-    public void call(PacketListenerDynamic listener) {
+    public void call(PacketListenerAbstract listener) {
         listener.onPlayerInject(this);
     }
+
+    @Override
+    public boolean isInbuilt() {
+        return true;
+    }
 }

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

@@ -1,44 +1,33 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.NMSPacketEvent;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import org.bukkit.entity.Player;
-import org.jetbrains.annotations.Nullable;
 
 /**
- * The {@code PostPacketPlayReceiveEvent} event is fired after minecraft processes
- * a PLAY server-bound packet.
- * You cannot cancel this event since minecraft already processed/is processing this packet.
- * If the incoming packet was cancelled, resulting in it not being processed by minecraft,
- * this event won't be called.
- * This event assures you that the {@link PacketPlayReceiveEvent} event wasn't cancelled.
+ * The {@code PostPacketPlayReceiveEvent} event is fired after all PacketEvents listeners finished processing
+ * the {@code PacketPlayReceiveEvent}. This event won't be called if the PacketPlayReceiveEvent event was cancelled.
+ * You cannot cancel this event.
  *
  * @author retrooper
  * @see <a href="https://wiki.vg/Protocol#Serverbound_4">https://wiki.vg/Protocol#Serverbound_4</a>
@@ -54,32 +43,18 @@ public class PostPacketPlayReceiveEvent extends NMSPacketEvent implements Player
 
     /**
      * This method returns the bukkit player object of the packet sender.
-     * The player object might be null during early packets.
      *
      * @return Packet sender.
      */
-    @Nullable
     @Override
     public Player getPlayer() {
         return player;
     }
 
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Play.Client.ARM_ANIMATION) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Play.Client.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
-    }
-
-    @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPostPacketPlayReceive(this);
+    public void call(PacketListenerAbstract listener) {
+        if (listener.clientSidedPlayAllowance == null || listener.clientSidedPlayAllowance.contains(getPacketId())) {
+            listener.onPostPacketPlayReceive(this);
+        }
     }
 }

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

@@ -1,44 +1,33 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.NMSPacketEvent;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import org.bukkit.entity.Player;
-import org.jetbrains.annotations.Nullable;
 
 /**
- * The {@code PostPacketPlaySendEvent} event is fired after minecraft processes
- * a PLAY client-bound packet.
- * You cannot cancel this event since minecraft already processed this packet.
- * If the incoming packet was cancelled, resulting in it not being processed by minecraft,
- * this event won't be called.
- * This event assures you that the {@link PacketPlaySendEvent} event wasn't cancelled.
+ * The {@code PostPacketPlaySendEvent} event is fired after all PacketEvents listeners finished processing
+ * the {@code PacketPlaySendEvent}. This event won't be called if the PacketPlaySendEvent event was cancelled.
+ * You cannot cancel this event.
  *
  * @author retrooper
  * @see <a href="https://wiki.vg/Protocol#Clientbound_4">https://wiki.vg/Protocol#Clientbound_4</a>
@@ -54,32 +43,18 @@ public class PostPacketPlaySendEvent extends NMSPacketEvent implements PlayerEve
 
     /**
      * This method returns the bukkit player object of the packet sender.
-     * The player object is might be null during early packets.
      *
      * @return Packet receiver.
      */
-    @Nullable
     @Override
     public Player getPlayer() {
         return player;
     }
 
-    /**
-     * Each binding in each packet state has their own constants.
-     * Example Usage:
-     * <p>
-     * {@code if (getPacketId() == PacketType.Play.Server.KEEP_ALIVE) }
-     * </p>
-     *
-     * @return Packet ID.
-     */
     @Override
-    public byte getPacketId() {
-        return PacketType.Play.Server.packetIds.getOrDefault(packet.getRawNMSPacket().getClass(), PacketType.INVALID);
-    }
-
-    @Override
-    public void call(PacketListenerDynamic listener) {
-        listener.onPostPacketPlaySend(this);
+    public void call(PacketListenerAbstract listener) {
+        if (listener.serverSidedPlayAllowance == null || listener.serverSidedPlayAllowance.contains(getPacketId())) {
+            listener.onPostPacketPlaySend(this);
+        }
     }
 }

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

@@ -1,32 +1,26 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.impl;
 
 import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
 import io.github.retrooper.packetevents.utils.netty.channel.ChannelUtils;
 import io.github.retrooper.packetevents.utils.player.ClientVersion;
@@ -37,11 +31,8 @@ import java.net.InetSocketAddress;
 
 /**
  * The {@code PostPlayerInjectEvent} event is fired after a successful injection.
- * If you are on an older version of PacketEvents DON'T use this to register player data.
- * This event might be called asynchronously and sometimes synchronously.
  * Use the {@link #isAsync()} method to figure out if is being called sync or async.
- * Make sure you do null checks in your packet listeners as this might be called a bit later.
- * A player is injected by PacketEvents whenever they join the server.
+ * A player is injected by PacketEvents each time they join the server.
  *
  * @author retrooper
  * @see <a href="https://github.com/retrooper/packetevents/blob/dev/src/main/java/io/github/retrooper/packetevents/handler/PacketHandlerInternal.java">https://github.com/retrooper/packetevents/blob/dev/src/main/java/io/github/retrooper/packetevents/handler/PacketHandlerInternal.java</a>
@@ -75,7 +66,7 @@ public class PostPlayerInjectEvent extends PacketEvent implements PlayerEvent {
      */
     @NotNull
     public Object getChannel() {
-        return PacketEvents.get().packetHandlerInternal.getChannel(player);
+        return PacketEvents.get().getPlayerUtils().getChannel(player);
     }
 
     @NotNull
@@ -104,7 +95,12 @@ public class PostPlayerInjectEvent extends PacketEvent implements PlayerEvent {
     }
 
     @Override
-    public void call(PacketListenerDynamic listener) {
+    public void call(PacketListenerAbstract listener) {
         listener.onPostPlayerInject(this);
     }
+
+    @Override
+    public boolean isInbuilt() {
+        return true;
+    }
 }

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.manager;
@@ -27,6 +21,7 @@ package io.github.retrooper.packetevents.event.manager;
 import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.event.PacketEvent;
 import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
 import io.github.retrooper.packetevents.event.PacketListenerDynamic;
 
 /**
@@ -54,7 +49,7 @@ public interface EventManager {
      */
     default EventManager callEvent(PacketEvent event) {
         //The dynamic event manager calls the legacy event manager.
-        PEEventManager.EVENT_MANAGER_DYNAMIC.callEvent(event);
+        PEEventManager.EVENT_MANAGER_MODERN.callEvent(event);
         return this;
     }
 
@@ -113,49 +108,51 @@ public interface EventManager {
     }
 
     /**
-     * Register the dynamic event listener.
+     * Register a PacketListenerDynamic listener.
      *
      * @param listener {@link PacketListenerDynamic}
      * @return Same event manager instance.
      */
+    @Deprecated
     default EventManager registerListener(PacketListenerDynamic listener) {
+        PEEventManager.EVENT_MANAGER_MODERN.registerListener(listener);
+        return this;
+    }
+
+    /**
+     * Register multiple PacketListenerDynamic listeners.
+     *
+     * @param listeners {@link PacketListenerDynamic}
+     * @return Same event manager instance.
+     */
+    @Deprecated
+    default EventManager registerListeners(PacketListenerDynamic... listeners) {
+        PEEventManager.EVENT_MANAGER_MODERN.registerListeners(listeners);
+        return this;
+    }
+
+
+    /**
+     * Register a PacketListenerAbstract listener.
+     *
+     * @param listener {@link PacketListenerAbstract}
+     * @return Same event manager instance.
+     */
+    default EventManager registerListener(PacketListenerAbstract listener) {
         if (listener != null) {
-            PEEventManager.EVENT_MANAGER_DYNAMIC.registerListener(listener);
+            PEEventManager.EVENT_MANAGER_MODERN.registerListener(listener);
         }
         return this;
     }
 
     /**
-     * Register multiple dynamic event listeners with one method.
+     * Register multiple PacketListenerAbstract listeners.
      *
-     * @param listeners {@link PacketListenerDynamic}
+     * @param listeners {@link PacketListenerAbstract}
      * @return Same event manager instance.
      */
-    default EventManager registerListeners(PacketListenerDynamic... listeners) {
-        PEEventManager.EVENT_MANAGER_DYNAMIC.registerListeners(listeners);
-        return this;
-    }
-
-    /**
-     * Unregister the dynamic event listener.
-     *
-     * @param listener {@link PacketListenerDynamic}
-     * @return Same event manager instance.
-     */
-    default EventManager unregisterListener(PacketListenerDynamic listener) {
-        PEEventManager.EVENT_MANAGER_DYNAMIC.unregisterListener(listener);
-        return this;
-    }
-
-    /**
-     * Unregister multiple dynamic event listeners with one method.
-     * Recommended to use the dynamic event listener.
-     *
-     * @param listeners {@link PacketListenerDynamic}
-     * @return Same event manager instance.
-     */
-    default EventManager unregisterListeners(PacketListenerDynamic... listeners) {
-        PEEventManager.EVENT_MANAGER_DYNAMIC.unregisterListeners(listeners);
+    default EventManager registerListeners(PacketListenerAbstract... listeners) {
+        PEEventManager.EVENT_MANAGER_MODERN.registerListeners(listeners);
         return this;
     }
 
@@ -166,7 +163,7 @@ public interface EventManager {
      * @return Same event manager instance.
      */
     default EventManager unregisterAllListeners() {
-        PEEventManager.EVENT_MANAGER_DYNAMIC.unregisterAllListeners();
+        PEEventManager.EVENT_MANAGER_MODERN.unregisterAllListeners();
         PEEventManager.EVENT_MANAGER_LEGACY.unregisterAllListeners();
         return this;
     }

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

@@ -1,148 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.event.manager;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.event.PacketListenerDynamic;
-import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
-import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.logging.Level;
-
-class EventManagerDynamic {
-    /**
-     * All listeners ordered by their priority.
-     * The most low priority ones are at the begging of the list and the most high priority ones are at the end.
-     */
-    private final List<PacketListenerDynamic> listeners = new ArrayList<>();
-
-    /**
-     * Call the PacketEvent.
-     * This method processes the event on all the registered dynamic packet event listeners.
-     * The {@link PacketEventPriority#LOWEST} prioritized listeners will be processing first,
-     * the {@link PacketEventPriority#MONITOR} will be processing last and can
-     * be the final decider whether the event has been cancelled or not.
-     * This call event also calls the legacy event manager call event.
-     *
-     * @param event {@link PacketEvent}
-     * @see EventManagerLegacy#callEvent(PacketEvent, byte)
-     */
-    public void callEvent(final PacketEvent event) {
-        boolean cancel = false;
-        if (event instanceof CancellableEvent) {
-            cancel = ((CancellableEvent) event).isCancelled();
-        }
-        byte highestReachedPriority = PacketEventPriority.LOWEST.getPriorityValue();
-        for (PacketListenerDynamic listener : listeners) {
-            highestReachedPriority = listener.getPriority().getPriorityValue();
-            try {
-                event.callPacketEvent(listener);
-                event.call(listener);
-            }
-            catch (Exception ex) {
-                PacketEvents.get().getPlugin().getLogger()
-                        .log(Level.SEVERE, "PacketEvents found an exception while calling a packet listener.", ex);
-            }
-            if (event instanceof CancellableEvent) {
-                CancellableEvent ce = (CancellableEvent) event;
-                cancel = ce.isCancelled();
-            }
-        }
-        if (event instanceof CancellableEvent) {
-            CancellableEvent ce = (CancellableEvent) event;
-            ce.setCancelled(cancel);
-        }
-
-        PEEventManager.EVENT_MANAGER_LEGACY.callEvent(event, highestReachedPriority);
-    }
-
-    /**
-     * Register the dynamic packet event listener.
-     *
-     * @param listener {@link PacketListenerDynamic}
-     */
-    public void registerListener(final PacketListenerDynamic listener) {
-        final byte priorityValue = listener.getPriority().getPriorityValue();
-        if (listeners.isEmpty()) {
-            listeners.add(listener);
-            return;
-        }
-        for (int i = 0; i < listeners.size(); i++) {
-            PacketListenerDynamic other = listeners.get(i);
-            byte otherPriorityValue = other.getPriority().getPriorityValue();
-            if (i + 1 == listeners.size()) {
-                listeners.add(listener);
-                break;
-            } else if (otherPriorityValue == priorityValue) {
-                listeners.add(i + 1, listener);
-                break;
-            } else if (otherPriorityValue > priorityValue) {
-                listeners.add(i, listener);
-                break;
-            }
-        }
-    }
-
-    /**
-     * Register multiple dynamic packet event listeners with one method.
-     *
-     * @param listeners {@link PacketListenerDynamic}
-     */
-    public void registerListeners(PacketListenerDynamic... listeners) {
-        for (PacketListenerDynamic listener : listeners) {
-            registerListener(listener);
-        }
-    }
-
-    /**
-     * Unregister the dynamic packet event listener.
-     *
-     * @param listener {@link PacketListenerDynamic}
-     */
-    public void unregisterListener(PacketListenerDynamic listener) {
-        listeners.remove(listener);
-    }
-
-    /**
-     * Unregister multiple dynamic packet event listeners with one method.
-     *
-     * @param listeners {@link PacketListenerDynamic}
-     */
-    public void unregisterListeners(PacketListenerDynamic... listeners) {
-        for (PacketListenerDynamic listener : listeners) {
-            unregisterListener(listener);
-        }
-    }
-
-    /**
-     * Unregister all dynamic packet event listeners.
-     */
-    public void unregisterAllListeners() {
-        listeners.clear();
-    }
-}

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.manager;
@@ -47,7 +41,7 @@ class EventManagerLegacy {
     /**
      * Call a PacketEvent with the legacy event manager.
      * This method processes the event on all legacy packet event listeners.
-     * This method is actually called by {@link EventManagerDynamic#callEvent(PacketEvent)} as the
+     * This method is actually called by {@link EventManagerModern#callEvent(PacketEvent)} as the
      * if you mix the two event systems, the dynamic listeners are always processed first and pass
      * their highest reached event priority that this legacy one has to beat/reach to be able to cancel
      * the event.
@@ -163,4 +157,4 @@ class EventManagerLegacy {
     public void unregisterAllListeners() {
         staticRegisteredMethods.clear();
     }
-}
+}

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

@@ -0,0 +1,114 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.event.manager;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.PacketListenerAbstract;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
+import io.github.retrooper.packetevents.event.PacketListenerPriority;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Level;
+
+class EventManagerModern {
+    private final Map<Byte, HashSet<PacketListenerAbstract>> listenersMap = new ConcurrentHashMap<>();
+
+    /**
+     * Call the PacketEvent.
+     * This method processes the event on all the registered dynamic packet event listeners.
+     * The {@link PacketEventPriority#LOWEST} prioritized listeners will be processing first,
+     * the {@link PacketEventPriority#MONITOR} will be processing last and can
+     * be the final decider whether the event has been cancelled or not.
+     * This call event also calls the legacy event manager call event.
+     *
+     * @param event {@link PacketEvent}
+     * @see EventManagerLegacy#callEvent(PacketEvent, byte)
+     */
+    public void callEvent(final PacketEvent event) {
+        boolean cancel = false;
+        if (event instanceof CancellableEvent) {
+            cancel = ((CancellableEvent) event).isCancelled();
+        }
+        byte highestReachedPriority = (byte) (PacketListenerPriority.LOWEST.getId() - 1);
+        for (byte priority = PacketListenerPriority.LOWEST.getId(); priority <= PacketListenerPriority.MONITOR.getId(); priority++) {
+            HashSet<PacketListenerAbstract> listeners = listenersMap.get(priority);
+            if (listeners != null) {
+                for (PacketListenerAbstract listener : listeners) {
+                    try {
+                        event.call(listener);
+                    } catch (Exception ex) {
+                        PacketEvents.get().getPlugin().getLogger()
+                                .log(Level.SEVERE, "PacketEvents found an exception while calling a packet listener.", ex);
+                    }
+                    //TODO Remove, because its redundant. We are only keeping it for compatibility with the legacy event manager.
+                    if (event instanceof CancellableEvent) {
+                        if (priority > highestReachedPriority) {
+                            CancellableEvent ce = (CancellableEvent) event;
+                            cancel = ce.isCancelled();
+                            highestReachedPriority = priority;
+                        }
+                    }
+                }
+                //TODO Remove. This is also redundant. The listeners are always called in order, the event is always being modified by each listener. The last listener therefore has the last decision on the cancellation.
+                if (event instanceof CancellableEvent) {
+                    CancellableEvent ce = (CancellableEvent) event;
+                    ce.setCancelled(cancel);
+                }
+            }
+        }
+        PEEventManager.EVENT_MANAGER_LEGACY.callEvent(event, highestReachedPriority);
+    }
+
+    /**
+     * Register the dynamic packet event listener.
+     *
+     * @param listener {@link PacketListenerAbstract}
+     */
+    public synchronized void registerListener(final PacketListenerAbstract listener) {
+        byte priority = listener.getPriority().getId();
+        HashSet<PacketListenerAbstract> listenerSet = listenersMap.get(priority);
+        if (listenerSet == null) {
+            listenerSet = new HashSet<>();
+        }
+        listenerSet.add(listener);
+        listenersMap.put(priority, listenerSet);
+    }
+
+    /**
+     * Register multiple dynamic packet event listeners with one method.
+     *
+     * @param listeners {@link PacketListenerAbstract}
+     */
+    public synchronized void registerListeners(PacketListenerAbstract... listeners) {
+        for (PacketListenerAbstract listener : listeners) {
+            registerListener(listener);
+        }
+    }
+
+    /**
+     * Unregister all dynamic packet event listeners.
+     */
+    public synchronized void unregisterAllListeners() {
+        listenersMap.clear();
+    }
+}

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.manager;
@@ -33,6 +27,6 @@ package io.github.retrooper.packetevents.event.manager;
 public class PEEventManager implements EventManager {
 
     public static final EventManagerLegacy EVENT_MANAGER_LEGACY = new EventManagerLegacy();
-    public static final EventManagerDynamic EVENT_MANAGER_DYNAMIC = new EventManagerDynamic();
+    public static final EventManagerModern EVENT_MANAGER_MODERN = new EventManagerModern();
 
 }

src/main/java/io/github/retrooper/packetevents/event/priority/PacketEventPriority.java

@@ -1,39 +1,34 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.event.priority;
 
 /**
  * Event priority enum for the new event system.
- * The event priority counts for the whole {@link io.github.retrooper.packetevents.event.PacketListenerDynamic}
+ * The event priority counts for the whole {@link io.github.retrooper.packetevents.event.PacketListenerAbstract}
  * and not for just one event.
- * The priority can be specified in the PacketListenerDynamic constructor.
+ * The priority can be specified in the PacketListenerAbstract constructor.
  * If you don't specify a priority in the constructor, it will use the {@link #NORMAL} priority.
  *
  * @author retrooper
  * @since 1.6.9
  */
+@Deprecated
 public enum PacketEventPriority {
     /**
      * The weakest event priority.
@@ -41,7 +36,7 @@ public enum PacketEventPriority {
      * Use this if you need to be the first processing the event and
      * need no power in cancelling an event or preventing an event cancellation.
      */
-    LOWEST((byte) 0),
+    LOWEST,
 
     /**
      * A weak event priority.
@@ -49,7 +44,7 @@ public enum PacketEventPriority {
      * Use this if you would prefer to be one of the first to process the event,
      * but don't mind if some other listener processes before you.
      */
-    LOW((byte) 1),
+    LOW,
 
     /**
      * Default event priority.
@@ -57,14 +52,14 @@ public enum PacketEventPriority {
      * Use this if you don't really care/know when you process or just want to
      * be in the middle.
      */
-    NORMAL((byte) 2),
+    NORMAL,
 
     /**
      * Higher than the {@link PacketEventPriority#NORMAL} event priority.
      * Fourth to be processed(IN THE DYNAMIC EVENT SYSTEM ONLY).
      * Use this if you want to process before the default event prioritized listeners.
      */
-    HIGH((byte) 3),
+    HIGH,
 
     /**
      * Second most powerful event priority.
@@ -75,7 +70,7 @@ public enum PacketEventPriority {
      * mind if some other listener urgently needs to decide over you.
      * {@link PacketEventPriority#MONITOR} is rarely ever recommended to use.
      */
-    HIGHEST((byte) 4),
+    HIGHEST,
 
     /**
      * Most powerful event priority.
@@ -84,24 +79,14 @@ public enum PacketEventPriority {
      * or urgently need to be the final decider whether the event has cancelled or not.
      * This is rarely recommended.
      */
-    MONITOR((byte) 5);
+    MONITOR;
 
-    final byte priorityValue;
 
-    PacketEventPriority(byte priorityValue) {
-        this.priorityValue = priorityValue;
+    public static PacketEventPriority getPacketEventPriority(byte bytePriority) {
+        return values()[bytePriority];
     }
 
     public byte getPriorityValue() {
-        return priorityValue;
-    }
-
-    public static PacketEventPriority getPacketEventPriority(byte bytePriority) {
-        for (PacketEventPriority priority : values()) {
-            if (priority.priorityValue == bytePriority) {
-                return priority;
-            }
-        }
-        return NORMAL;
+        return (byte) ordinal();
     }
 }

src/main/java/io/github/retrooper/packetevents/exceptions/PacketEventsLoadFailureException.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.exceptions;

src/main/java/io/github/retrooper/packetevents/exceptions/WrapperFieldNotFoundException.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.exceptions;

src/main/java/io/github/retrooper/packetevents/exceptions/WrapperUnsupportedUsageException.java

@@ -0,0 +1,42 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.exceptions;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+
+/**
+ * An exception thrown by PacketEvents when a wrapper is used although it isn't supported on the local server version.
+ * Make sure to decompile a wrapper before using it, if you are unsure if it is supported through out all the server versions.
+ * We override a {@link WrappedPacket#isSupported()} method if it isn't supported on all server versions.
+ *
+ * @author retrooper
+ * @see WrappedPacket#isSupported()
+ * @see WrappedPacket.SupportedVersions
+ * @since 1.7
+ */
+public class WrapperUnsupportedUsageException extends RuntimeException {
+    public WrapperUnsupportedUsageException(String message) {
+        super(message);
+    }
+
+    public WrapperUnsupportedUsageException(Class<? extends WrappedPacket> wrapperClass) {
+        this("You are using a packet wrapper which happens to be unsupported on the local server version. Packet wrapper you attempted to use: " + ClassUtil.getClassSimpleName(wrapperClass));
+    }
+}

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

@@ -1,444 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.handler;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.impl.*;
-import io.github.retrooper.packetevents.injector.GlobalChannelInjector;
-import io.github.retrooper.packetevents.packettype.PacketType;
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
-import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
-import io.github.retrooper.packetevents.packetwrappers.login.in.handshake.WrappedPacketLoginInHandshake;
-import io.github.retrooper.packetevents.packetwrappers.login.in.start.WrappedPacketLoginInStart;
-import io.github.retrooper.packetevents.settings.PacketEventsSettings;
-import io.github.retrooper.packetevents.utils.gameprofile.WrappedGameProfile;
-import io.github.retrooper.packetevents.utils.nms.NMSUtils;
-import io.github.retrooper.packetevents.utils.player.ClientVersion;
-import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
-import org.bukkit.entity.Player;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
-import java.util.WeakHashMap;
-import java.util.concurrent.ConcurrentHashMap;
-
-/**
- * Internal manager of everything related to packets.
- * For example injecting, channel caching, internal processing, packet sending....
- * This class is only meant to be used internally.
- * This could end up being refactored or renamed without a deprecation as it is only meant to be used internally.
- *
- * @author retrooper
- * @see <a href="http://netty.io">http://netty.io</a>
- * @since 1.7.9
- */
-public class PacketHandlerInternal {
-    public final GlobalChannelInjector injector = new GlobalChannelInjector();
-    public final Map<UUID, Long> keepAliveMap = new HashMap<>();
-    public final Map<String, Object> channelMap = new WeakHashMap<>();
-
-    public PacketHandlerInternal() {
-        injector.prepare();
-    }
-
-    /**
-     * Get a player's netty channel object with their name.
-     * This netty channel object is cached in a {@link ConcurrentHashMap} as the value and
-     * the name is the key.
-     * We cache the name and the channel quite early infact,
-     * once we receive the {@link PacketType.Login.Client#START} packet(which contains the game profile)
-     * and the game profile contains the player name.
-     * The wrapper for that packet is {@link WrappedPacketLoginInStart}.
-     * If PacketEvents couldn't cache(when you have {@link PacketEventsSettings#shouldInjectEarly()} set to false),
-     * PacketEvents will use some reflection to see if CraftBukkit has the netty channel.
-     * If you access this before the START login packet was sent, you will for sure experience issues.
-     *
-     * @param player Target player.
-     * @return Netty channel of a player by their name.
-     * @see <a href="https://wiki.vg/Protocol#Login_Start">https://wiki.vg/Protocol#Login_Start</a>
-     * @see Player#getName()
-     */
-    public Object getChannel(Player player) {
-        String name = player.getName();
-        Object channel = channelMap.get(name);
-        if (channel == null) {
-            channel = NMSUtils.getChannel(player);
-            channelMap.put(name, channel);
-        }
-        return channel;
-    }
-
-    /**
-     * Inject a player.
-     * Executed synchronously or asynchronously depending on what you have the associated setting set to.
-     * Injecting a player is basically pairing the cached netty channel
-     * {@link #getChannel(Player)} to a bukkit player object.
-     * Bukkit initializes the {@link Player} object some time after
-     * we inject the netty channel, so we need to pair the two.
-     * PacketEvents already injects a player when the bukkit
-     * {@link org.bukkit.event.player.PlayerJoinEvent} or {@link org.bukkit.event.player.PlayerLoginEvent}
-     * is called, depending on your {@link PacketEventsSettings#shouldInjectEarly()} setting is set to.
-     *
-     * @param player Target bukkit player.
-     */
-    public void injectPlayer(Player player) {
-        if (PacketEvents.get().getSettings().shouldInjectAsync()) {
-            injectPlayerAsync(player);
-        } else {
-            injectPlayerSync(player);
-        }
-    }
-
-    /**
-     * Eject a player.
-     * Executed synchronously or asynchronously depending on what you have the associated setting set to.
-     * Ejecting a player is basically unpairing the cached netty channel
-     * {@link #getChannel(Player)} from the bukkit player.
-     * Do this if you want to stop listening to a user's packets.
-     * PacketEvents already ejects a player when the bukkit
-     * {@link org.bukkit.event.player.PlayerQuitEvent} is called.
-     *
-     * @param player Target player.
-     */
-    public void ejectPlayer(Player player) {
-        if (PacketEvents.get().getSettings().shouldEjectAsync()) {
-            ejectPlayerAsync(player);
-        } else {
-            ejectPlayerSync(player);
-        }
-    }
-
-    /**
-     * Synchronously inject a player.
-     *
-     * @param player Target player.
-     * @see #injectPlayer(Player)
-     */
-    public void injectPlayerSync(Player player) {
-        PlayerInjectEvent injectEvent = new PlayerInjectEvent(player, false);
-        PacketEvents.get().getEventManager().callEvent(injectEvent);
-        if (!injectEvent.isCancelled()) {
-            injector.injectPlayerSync(player);
-        }
-    }
-
-    /**
-     * Asynchronously inject a player.
-     *
-     * @param player Target player.
-     * @see #injectPlayer(Player)
-     */
-    public void injectPlayerAsync(Player player) {
-        PlayerInjectEvent injectEvent = new PlayerInjectEvent(player, true);
-        PacketEvents.get().getEventManager().callEvent(injectEvent);
-        if (!injectEvent.isCancelled()) {
-            injector.injectPlayerAsync(player);
-        }
-    }
-
-    /**
-     * Synchronously eject a player.
-     *
-     * @param player Target player.
-     * @see #ejectPlayer(Player)
-     */
-    public void ejectPlayerSync(Player player) {
-        PlayerEjectEvent ejectEvent = new PlayerEjectEvent(player, false);
-        PacketEvents.get().getEventManager().callEvent(ejectEvent);
-        if (!ejectEvent.isCancelled()) {
-            injector.ejectPlayerSync(player);
-            keepAliveMap.remove(player.getUniqueId());
-            channelMap.remove(player.getName());
-        }
-    }
-
-    /**
-     * Asynchronously eject a player.
-     *
-     * @param player Target player.
-     * @see #ejectPlayer(Player)
-     */
-    public void ejectPlayerAsync(Player player) {
-        PlayerEjectEvent ejectEvent = new PlayerEjectEvent(player, true);
-        PacketEvents.get().getEventManager().callEvent(ejectEvent);
-        if (!ejectEvent.isCancelled()) {
-            injector.ejectPlayerAsync(player);
-        }
-    }
-
-    /**
-     * Write and flush a packet to a netty channel.
-     * This netty channel is an object as 1.7.10 and 1.8 and above
-     * have different netty package locations.
-     *
-     * @param channel Netty channel.
-     * @param packet  NMS Packet.
-     */
-    public void sendPacket(Object channel, Object packet) {
-        injector.sendPacket(channel, packet);
-    }
-
-    /**
-     * Make PacketEvents process an incoming packet.
-     *
-     * @param player  Packet sender.
-     * @param channel Packet sender's netty channel.
-     * @param packet  NMS Packet.
-     * @return NMS Packet, null if the event was cancelled.
-     */
-    public Object read(Player player, Object channel, Object packet) {
-        if (PacketTypeClasses.Login.Client.START.equals(packet.getClass())) {
-            WrappedPacketLoginInStart startWrapper = new WrappedPacketLoginInStart(new NMSPacket(packet));
-            WrappedGameProfile gameProfile = startWrapper.getGameProfile();
-            channelMap.put(gameProfile.name, channel);
-        }
-        if (player == null) {
-            String simpleClassName = ClassUtil.getClassSimpleName(packet.getClass());
-            //Status packet
-            if (simpleClassName.startsWith("PacketS")) {
-                final PacketStatusReceiveEvent event = new PacketStatusReceiveEvent(channel, new NMSPacket(packet));
-                PacketEvents.get().getEventManager().callEvent(event);
-                packet = event.getNMSPacket().getRawNMSPacket();
-                interceptStatusReceive(event);
-                if (event.isCancelled()) {
-                    packet = null;
-                }
-            } else {
-                //Login packet
-                final PacketLoginReceiveEvent event = new PacketLoginReceiveEvent(channel, new NMSPacket(packet));//Cache the channel
-                //f (event.getPacketId() == PacketType.Login.Client.START) {
-                //  WrappedPacketLoginInStart startWrapper = new WrappedPacketLoginInStart(event.getNMSPacket());
-                //WrappedGameProfile gameProfile = startWrapper.getGameProfile();
-                //channelMap.put(gameProfile.name, channel);
-                //}
-                PacketEvents.get().getEventManager().callEvent(event);
-                packet = event.getNMSPacket().getRawNMSPacket();
-                interceptLoginReceive(event);
-                if (event.isCancelled()) {
-                    packet = null;
-                }
-            }
-        } else {
-            final PacketPlayReceiveEvent event = new PacketPlayReceiveEvent(player, channel, new NMSPacket(packet));
-            PacketEvents.get().getEventManager().callEvent(event);
-            packet = event.getNMSPacket().getRawNMSPacket();
-            interceptRead(event);
-            if (event.isCancelled()) {
-                packet = null;
-            }
-        }
-        return packet;
-    }
-
-    /**
-     * Make PacketEvents process an outgoing packet.
-     * The NMS Packet will be null when netty should cancel a packet.
-     *
-     * @param player  Packet receiver.
-     * @param channel Packet receiver's netty channel.
-     * @param packet  NMS Packet.
-     * @return NMS Packet, null if the event was cancelled.
-     */
-    public Object write(Player player, Object channel, Object packet) {
-        if (player == null) {
-            String simpleClassName = ClassUtil.getClassSimpleName(packet.getClass());
-            //Status packet
-            if (simpleClassName.startsWith("PacketS")) {
-                final PacketStatusSendEvent event = new PacketStatusSendEvent(channel, new NMSPacket(packet));
-                PacketEvents.get().getEventManager().callEvent(event);
-                packet = event.getNMSPacket().getRawNMSPacket();
-                interceptStatusSend(event);
-                if (event.isCancelled()) {
-                    packet = null;
-                }
-            }
-            //Login packet
-            else {
-                final PacketLoginSendEvent event = new PacketLoginSendEvent(channel, new NMSPacket(packet));
-                PacketEvents.get().getEventManager().callEvent(event);
-                packet = event.getNMSPacket().getRawNMSPacket();
-                interceptLoginSend(event);
-                if (event.isCancelled()) {
-                    packet = null;
-                }
-            }
-        } else {
-            final PacketPlaySendEvent event = new PacketPlaySendEvent(player, channel, new NMSPacket(packet));
-            PacketEvents.get().getEventManager().callEvent(event);
-            packet = event.getNMSPacket().getRawNMSPacket();
-            interceptWrite(event);
-            if (event.isCancelled()) {
-                packet = null;
-            }
-        }
-        return packet;
-    }
-
-    /**
-     * Make PacketEvents process an incoming PLAY packet after minecraft has processed it.
-     * As minecraft has already processed the packet, we cannot cancel the action, nor the event.
-     *
-     * @param player  Packet sender.
-     * @param channel Netty channel of the packet sender.
-     * @param packet  NMS Packet.
-     */
-    public void postRead(Player player, Object channel, Object packet) {
-        if (player != null) {
-            //Since player != null check is done, status and login packets won't come passed this point.
-            PostPacketPlayReceiveEvent event = new PostPacketPlayReceiveEvent(player, channel, new NMSPacket(packet));
-            PacketEvents.get().getEventManager().callEvent(event);
-            interceptPostPlayReceive(event);
-        }
-    }
-
-    /**
-     * Make PacketEvents process an outgoing PLAY packet after minecraft has already sent the packet.
-     * This doesn't necessarily mean the client already received the packet,
-     * but the server has sent it for sure by this time.
-     * As minecraft has already processed the packet, we cannot cancel the action, nor the event.
-     *
-     * @param player  Packet receiver.
-     * @param channel Netty channel of the packet receiver.
-     * @param packet  NMS Packet.
-     */
-    public void postWrite(Player player, Object channel, Object packet) {
-        if (player != null) {
-            //Since player != null check is done, status and login packets won't come passed this point.
-            PostPacketPlaySendEvent event = new PostPacketPlaySendEvent(player, channel, new NMSPacket(packet));
-            PacketEvents.get().getEventManager().callEvent(event);
-            interceptPostPlaySend(event);
-        }
-    }
-
-    /**
-     * Internal processing of an incoming PLAY packet.
-     *
-     * @param event PLAY server-bound packet event.
-     */
-    private void interceptRead(PacketPlayReceiveEvent event) {
-        if (event.getPacketId() == PacketType.Play.Client.KEEP_ALIVE) {
-                UUID uuid = event.getPlayer().getUniqueId();
-                long timestamp = keepAliveMap.getOrDefault(uuid, event.getTimestamp());
-                long currentTime = event.getTimestamp();
-                long ping = currentTime - timestamp;
-                long smoothedPing = (PacketEvents.get().getPlayerUtils().getSmoothedPing(event.getPlayer().getUniqueId()) * 3L + ping) / 4;
-                PacketEvents.get().getPlayerUtils().playerPingMap.put(uuid, (int) ping);
-                PacketEvents.get().getPlayerUtils().playerSmoothedPingMap.put(uuid, (int) smoothedPing);
-            }
-    }
-
-    /**
-     * Internal processing of an outgoing PLAY packet.
-     *
-     * @param event PLAY client-bound packet event.
-     */
-    private void interceptWrite(PacketPlaySendEvent event) {
-
-    }
-
-    /**
-     * Internal processing of an incoming LOGIN packet.
-     *
-     * @param event LOGIN server-bound packet event.
-     */
-    private void interceptLoginReceive(PacketLoginReceiveEvent event) {
-        if (event.getPacketId() == PacketType.Login.Client.HANDSHAKE) {
-            WrappedPacketLoginInHandshake handshake = new WrappedPacketLoginInHandshake(event.getNMSPacket());
-            int protocolVersion = handshake.getProtocolVersion();
-            ClientVersion version = ClientVersion.getClientVersion(protocolVersion);
-            PacketEvents.get().getPlayerUtils().tempClientVersionMap.put(event.getSocketAddress(), version);
-        }
-    }
-
-    /**
-     * Internal processing of an outgoing LOGIN packet.
-     *
-     * @param event client-bound LOGIN packet event.
-     */
-    private void interceptLoginSend(PacketLoginSendEvent event) {
-
-    }
-
-    /**
-     * Internal processing of an incoming STATUS packet.
-     *
-     * @param event server-bound STATUS packet event.
-     */
-    private void interceptStatusReceive(PacketStatusReceiveEvent event) {
-
-    }
-
-    /**
-     * Internal processing of an outgoing STATUS packet.
-     *
-     * @param event client-bound STATUS packet event.
-     */
-    private void interceptStatusSend(PacketStatusSendEvent event) {
-
-    }
-
-    /**
-     * Internal processing of a packet that has already been processed by minecraft.
-     *
-     * @param event post server-bound play packet event.
-     */
-    private void interceptPostPlayReceive(PostPacketPlayReceiveEvent event) {
-
-    }
-
-    /**
-     * Internal processing of a packet that has already been sent to a client.
-     * Doesn't necessarily mean the client has received it yet.
-     *
-     * @param event post client-bound play packet event.
-     */
-    private void interceptPostPlaySend(PostPacketPlaySendEvent event) {
-        if (event.getPacketId() == PacketType.Play.Server.KEEP_ALIVE) {
-            if (event.getPlayer() != null) {
-                keepAliveMap.put(event.getPlayer().getUniqueId(), event.getTimestamp());
-            }
-        }
-    }
-
-    /**
-     * If you are using the EarlyInjector,
-     * calling this close method will unregister the channel handlers it registered when the plugin enabled.
-     * PacketEvents already unregisters them in the {@link PacketEvents#terminate()} method.
-     */
-    public void cleanup() {
-        injector.cleanup();
-    }
-
-    /**
-     * If you are using the EarlyInjector,
-     * calling this close method will unregister the channel handlers it registered when the plugin enabled
-     * ASYNCHRONOUSLY.
-     * PacketEvents already unregisters them in the {@link PacketEvents#terminate()} method.
-     */
-    public void cleanupAsync() {
-        injector.cleanupAsync();
-    }
-}

src/main/java/io/github/retrooper/packetevents/injector/ChannelInjector.java

@@ -1,33 +1,39 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 package io.github.retrooper.packetevents.injector;
 
-import io.github.retrooper.packetevents.PacketEvents;
 import org.bukkit.entity.Player;
 
 public interface ChannelInjector {
-    default void prepare() {
-
+    default boolean isBound() {
+        return true;
     }
 
-    default void cleanup() {
+    void inject();
 
-    }
+    void eject();
 
-    default void cleanupAsync() {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                cleanup();
-            }
-        });
-    }
+    void injectPlayer(Player player);
 
-    void injectPlayerSync(Player player);
+    void ejectPlayer(Player player);
 
-    void ejectPlayerSync(Player player);
-
-    void injectPlayerAsync(Player player);
-
-    void ejectPlayerAsync(Player player);
+    boolean hasInjected(Player player);
 
     void sendPacket(Object channel, Object rawNMSPacket);
 }

src/main/java/io/github/retrooper/packetevents/injector/EarlyInjector.java

@@ -0,0 +1,25 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector;
+
+import org.bukkit.entity.Player;
+
+public interface EarlyInjector extends ChannelInjector {
+    void updatePlayerObject(Player player, Object channel);
+}

src/main/java/io/github/retrooper/packetevents/injector/GlobalChannelInjector.java

@@ -1,65 +1,90 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 package io.github.retrooper.packetevents.injector;
 
 import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.injector.earlyinjector.EarlyChannelInjector7;
-import io.github.retrooper.packetevents.injector.earlyinjector.EarlyChannelInjector8;
-import io.github.retrooper.packetevents.injector.lateinjector.LateChannelInjector7;
-import io.github.retrooper.packetevents.injector.lateinjector.LateChannelInjector8;
+import io.github.retrooper.packetevents.event.impl.PlayerEjectEvent;
+import io.github.retrooper.packetevents.event.impl.PlayerInjectEvent;
+import io.github.retrooper.packetevents.injector.legacy.early.EarlyChannelInjectorLegacy;
+import io.github.retrooper.packetevents.injector.legacy.late.LateChannelInjectorLegacy;
+import io.github.retrooper.packetevents.injector.modern.early.EarlyChannelInjectorModern;
+import io.github.retrooper.packetevents.injector.modern.late.LateChannelInjectorModern;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import org.bukkit.entity.Player;
 
-public class GlobalChannelInjector implements ChannelInjector {
-    private final ChannelInjector injector;
+public class GlobalChannelInjector {
+    private ChannelInjector injector;
 
-    public GlobalChannelInjector() {
+    public void load() {
         boolean legacy = NMSUtils.legacyNettyImportMode;
-        //Early injector
-        if (PacketEvents.get().getSettings().shouldInjectEarly()) {
-            injector = legacy ? new EarlyChannelInjector7() : new EarlyChannelInjector8();
-        }
-        //Late injector
-        else {
-            injector = legacy ? new LateChannelInjector7() : new LateChannelInjector8();
+        if (!PacketEvents.get().getSettings().shouldUseCompatibilityInjector()) {
+            injector = legacy ? new EarlyChannelInjectorLegacy() : new EarlyChannelInjectorModern();
+        } else {
+            injector = legacy ? new LateChannelInjectorLegacy() : new LateChannelInjectorModern();
         }
     }
 
-    @Override
-    public void prepare() {
-        injector.prepare();
+    public boolean isBound() {
+        return injector.isBound();
     }
 
-    @Override
-    public void cleanup() {
-        injector.cleanup();
+    public void inject() {
+        try {
+            //Try inject...
+            injector.inject();
+        } catch (Exception ex) {
+            //Failed to inject! Let us revert to the compatibility injector and re-inject.
+            if (injector instanceof EarlyInjector) {
+                PacketEvents.get().getSettings().compatInjector(true);
+                load();
+                injector.inject();
+                PacketEvents.get().getPlugin().getLogger().warning("[packetevents] Failed to inject with the Early Injector. Reverting to the Compatibility/Late Injector... This is just a warning, but please report this!");
+                ex.printStackTrace();
+            }
+        }
     }
 
-    @Override
-    public void cleanupAsync() {
-        injector.cleanupAsync();
+    public void eject() {
+        injector.eject();
     }
 
-    @Override
-    public void injectPlayerSync(Player player) {
-        injector.injectPlayerSync(player);
+    public void injectPlayer(Player player) {
+        PlayerInjectEvent injectEvent = new PlayerInjectEvent(player);
+        PacketEvents.get().callEvent(injectEvent);
+        if (!injectEvent.isCancelled()) {
+            injector.injectPlayer(player);
+        }
     }
 
-    @Override
-    public void ejectPlayerSync(Player player) {
-        injector.ejectPlayerSync(player);
+    public void ejectPlayer(Player player) {
+        PlayerEjectEvent ejectEvent = new PlayerEjectEvent(player);
+        PacketEvents.get().callEvent(ejectEvent);
+        if (!ejectEvent.isCancelled()) {
+            injector.ejectPlayer(player);
+        }
     }
 
-    @Override
-    public void injectPlayerAsync(Player player) {
-        injector.injectPlayerAsync(player);
+    public boolean hasInjected(Player player) {
+        return injector.hasInjected(player);
     }
 
-    @Override
-    public void ejectPlayerAsync(Player player) {
-        injector.ejectPlayerAsync(player);
-    }
-
-    @Override
-    public void sendPacket(Object channel, Object rawNMSPacket) {
-        injector.sendPacket(channel, rawNMSPacket);
+    public void sendPacket(Object ch, Object rawNMSPacket) {
+        injector.sendPacket(ch, rawNMSPacket);
     }
 }

src/main/java/io/github/retrooper/packetevents/injector/LateInjector.java

@@ -0,0 +1,23 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector;
+
+public interface LateInjector extends ChannelInjector {
+
+}

src/main/java/io/github/retrooper/packetevents/injector/earlyinjector/EarlyChannelInjector7.java

@@ -1,337 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.injector.earlyinjector;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
-import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.nms.NMSUtils;
-import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import net.minecraft.util.io.netty.channel.*;
-import org.bukkit.entity.Player;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.NoSuchElementException;
-
-/**
- * 1.7.10 Spigot Early channel injector.
- * This is an early injector  for 1.7.10 spigot servers.
- * The netty import on spigot changed since 1.8.
- * So we needed to make a new class using the older import location to support 1.7.10.
- * This is why we also commonly use a java {@link Object} class when it comes to netty channels
- * in some classes to maintain support for both netty imports.
- *
- * @author retrooper
- * @since 1.8
- */
-public class EarlyChannelInjector7 implements EarlyInjector {
-    /**
-     * Netty minecraft server channels.
-     */
-    private final List<Channel> serverChannels = new ArrayList<>();
-
-    /**
-     * First channel initializer.
-     * Used to inject incoming channels.
-     */
-    private ChannelInitializer<Channel> firstChannelInitializer;
-
-    /**
-     * Second channel initializer.
-     */
-    private ChannelInitializer<Channel> secondChannelInitializer;
-
-    /**
-     * Channel handler.
-     */
-    private ChannelInboundHandlerAdapter channelHandler;
-
-    /**
-     * Network managers.
-     */
-    private List<Object> networkMarkers;
-
-
-    /**
-     * Access minecraft's network managers to synchronize against as they interfere with our channel injection.
-     * Initiate the channel initializers and the channel handler.
-     * Access minecraft's server channels and add our own.
-     */
-    @Override
-    public void prepare() {
-        networkMarkers = NMSUtils.getNetworkMarkers();
-        firstChannelInitializer = new ChannelInitializer<Channel>() {
-            @Override
-            protected void initChannel(final Channel channel) {
-                if (networkMarkers != null) {
-                    synchronized (networkMarkers) {
-                        channel.eventLoop().execute(new Runnable() {
-                            @Override
-                            public void run() {
-                                if (PacketEvents.get().getServerUtils().getVersion().isNewerThan(ServerVersion.v_1_11_2)) {
-                                    channel.eventLoop().execute(new Runnable() {
-                                        @Override
-                                        public void run() {
-                                            injectChannel(channel);
-                                        }
-                                    });
-                                } else {
-                                    injectChannel(channel);
-                                }
-                            }
-                        });
-                    }
-                } else {
-                    channel.eventLoop().execute(new Runnable() {
-                        @Override
-                        public void run() {
-                            if (PacketEvents.get().getServerUtils().getVersion().isNewerThan(ServerVersion.v_1_11_2)) {
-                                channel.eventLoop().execute(new Runnable() {
-                                    @Override
-                                    public void run() {
-                                        injectChannel(channel);
-                                    }
-                                });
-                            } else {
-                                injectChannel(channel);
-                            }
-                        }
-                    });
-                }
-            }
-        };
-
-        secondChannelInitializer = new ChannelInitializer<Channel>() {
-            @Override
-            protected void initChannel(Channel channel) {
-                channel.pipeline().addLast(firstChannelInitializer);
-            }
-        };
-
-        channelHandler = new ChannelInboundHandlerAdapter() {
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object msg) {
-                Channel channel = (Channel) msg;
-                channel.pipeline().addFirst(secondChannelInitializer);
-                ctx.fireChannelRead(msg);
-            }
-        };
-
-        //Wrapper for the minecraft server connection.
-        WrappedPacket serverConnectionWrapper = new WrappedPacket(new NMSPacket(NMSUtils.getMinecraftServerConnection()));
-        boolean searching = true;
-        for (int i = 0; searching; i++) {
-            try {
-                //Get the list.
-                List<Object> serverChannelList = (List<Object>) serverConnectionWrapper.readObject(i, List.class);
-                for (Object serverChannel : serverChannelList) {
-                    //Is this the server channel list?
-                    if (serverChannel instanceof ChannelFuture) {
-                        //Yes it is...
-                        Channel channel = ((ChannelFuture) serverChannel).channel();
-                        serverChannels.add(channel);
-                        //Add our channel handler to all the server channel pipelines.
-                        channel.pipeline().addFirst(channelHandler);
-                        searching = false;
-                    }
-                }
-            } catch (Exception ex) {
-                break;
-            }
-        }
-    }
-
-    /**
-     * Remove our channel handler from all server channel pipelines from the current thread.
-     */
-    @Override
-    public void cleanup() {
-        for (Channel channel : serverChannels) {
-            try {
-                channel.pipeline().remove(channelHandler);
-            } catch (NoSuchElementException ignored) {
-
-            }
-        }
-    }
-
-    /**
-     * Inject a netty channel to listen to packets.
-     * If already injected, get the channel interceptor.
-     *
-     * @param ch Netty channel.
-     * @return {@link PlayerChannelInterceptor}
-     */
-    @Override
-    public PlayerChannelInterceptor injectChannel(Object ch) {
-        Channel channel = (Channel) ch;
-        String handlerName = PacketEvents.handlerName;
-        PlayerChannelInterceptor interceptor = (PlayerChannelInterceptor) channel.pipeline().get(handlerName);
-        if (interceptor == null) {
-            interceptor = new PlayerChannelInterceptor();
-            if (channel.pipeline().get("packet_handler") != null) {
-                channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
-            } else {
-                throw new IllegalStateException("Failed to inject an incoming channel due to \"packet_handler\" not being added to the pipeline! Let them rejoin!");
-            }
-        }
-        return interceptor;
-    }
-
-    /**
-     * Eject a netty channel.
-     *
-     * @param ch Netty channel.
-     */
-    @Override
-    public void ejectChannel(Object ch) {
-        Channel channel = (Channel) ch;
-        String handlerName = PacketEvents.handlerName;
-        if (channel.pipeline().get(handlerName) != null) {
-            channel.pipeline().remove(handlerName);
-        }
-    }
-
-    /**
-     * Inject a player on the current thread.
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void injectPlayerSync(Player player) {
-        Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        injectChannel(channel).player = player;
-    }
-
-    /**
-     * Eject a player on the current thread.
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void ejectPlayerSync(Player player) {
-        Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        ejectChannel(channel);
-        PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-        PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-    }
-
-    /**
-     * Inject a player on our custom inject and eject (fixed) thread pool (=asynchronously).
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void injectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-                injectChannel(channel).player = player;
-            }
-        });
-    }
-
-    /**
-     * Eject a player on our custom inject and eject (fixed) thread pool (=asynchronously).
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void ejectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-                ejectChannel(channel);
-                PacketEvents.get().packetHandlerInternal.keepAliveMap.remove(player.getUniqueId());
-                PacketEvents.get().packetHandlerInternal.channelMap.remove(player.getName());
-                PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-                PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-            }
-        });
-    }
-
-    /**
-     * Send a raw NMS packet to a netty channel.
-     *
-     * @param ch     Netty channel.
-     * @param packet Raw NMS Packet.
-     */
-    @Override
-    public void sendPacket(Object ch, Object packet) {
-        Channel channel = (Channel) ch;
-        channel.writeAndFlush(packet);
-    }
-
-    /**
-     * Player channel interceptor.
-     *
-     * @author retrooper
-     * @since 1.8
-     */
-    public static class PlayerChannelInterceptor extends ChannelDuplexHandler {
-        /**
-         * Associated player.
-         * This is null until you inject the player.
-         * (We inject the PLAYER by PlayerLoginEvent or PlayerJoinEvent depending on your settings)
-         */
-        public volatile Player player;
-
-        /**
-         * Incoming packet interception.
-         *
-         * @param ctx    Netty channel handler context.
-         * @param packet Raw NMS Packet.
-         * @throws Exception Possible exception.
-         */
-        @Override
-        public void channelRead(final ChannelHandlerContext ctx, Object packet) throws Exception {
-            packet = PacketEvents.get().packetHandlerInternal.read(player, ctx.channel(), packet);
-            if (packet != null) {
-                super.channelRead(ctx, packet);
-                PacketEvents.get().packetHandlerInternal.postRead(player, ctx.channel(), packet);
-            }
-        }
-
-        /**
-         * Outgoing packet interception.
-         *
-         * @param ctx     Netty channel handler context.
-         * @param packet  Raw NMS Packet
-         * @param promise Netty channel promise.
-         * @throws Exception Possible exception.
-         */
-        @Override
-        public void write(final ChannelHandlerContext ctx, Object packet, final ChannelPromise promise) throws Exception {
-            packet = PacketEvents.get().packetHandlerInternal.write(player, ctx.channel(), packet);
-            if (packet != null) {
-                super.write(ctx, packet, promise);
-                PacketEvents.get().packetHandlerInternal.postWrite(player, ctx.channel(), packet);
-            }
-        }
-    }
-}

src/main/java/io/github/retrooper/packetevents/injector/earlyinjector/EarlyChannelInjector8.java

@@ -1,332 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.injector.earlyinjector;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
-import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.nms.NMSUtils;
-import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import io.netty.channel.*;
-import org.bukkit.entity.Player;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.NoSuchElementException;
-
-/**
- * 1.8 (and above) Spigot Early channel injector.
- * This is an early injector for 1.8 (and above) spigot servers.
- * The netty import on spigot changed since 1.8.
- * So we needed to make separate classes for the 1.7.10 and the 1.8+ injector.
- * This is why we also commonly use a java {@link Object} class when it comes to netty channels
- * in some classes to maintain support for both netty imports.
- *
- * @author retrooper
- * @since 1.8
- */
-public class EarlyChannelInjector8 implements EarlyInjector {
-    /**
-     * Netty minecraft server channels.
-     */
-    private final List<Channel> serverChannels = new ArrayList<>();
-
-    /**
-     * First channel initializer.
-     * Used to inject incoming channels.
-     */
-    private ChannelInitializer<Channel> firstChannelInitializer;
-
-    /**
-     * Second channel initializer.
-     */
-    private ChannelInitializer<Channel> secondChannelInitializer;
-
-    /**
-     * Channel handler.
-     */
-    private ChannelInboundHandlerAdapter channelHandler;
-
-    /**
-     * Network managers.
-     */
-    private List<Object> networkMarkers;
-
-    /**
-     * Access minecraft's network managers to synchronize against as they interfere with our channel injection.
-     * Initiate the channel initializers and the channel handler.
-     * Access minecraft's server channels and add our own.
-     */
-    @Override
-    public void prepare() {
-        networkMarkers = NMSUtils.getNetworkMarkers();
-        firstChannelInitializer = new ChannelInitializer<Channel>() {
-            @Override
-            protected void initChannel(final Channel channel) {
-                if (networkMarkers != null) {
-                    synchronized (networkMarkers) {
-                        if (PacketEvents.get().getServerUtils().getVersion().isNewerThan(ServerVersion.v_1_11_2)) {
-                            channel.eventLoop().execute(new Runnable() {
-                                @Override
-                                public void run() {
-                                    injectChannel(channel);
-                                }
-                            });
-                        } else {
-                            injectChannel(channel);
-                        }
-                    }
-                } else {
-                    channel.eventLoop().execute(new Runnable() {
-                        @Override
-                        public void run() {
-                            if (PacketEvents.get().getServerUtils().getVersion().isNewerThan(ServerVersion.v_1_11_2)) {
-                                channel.eventLoop().execute(new Runnable() {
-                                    @Override
-                                    public void run() {
-                                        injectChannel(channel);
-                                    }
-                                });
-                            } else {
-                                injectChannel(channel);
-                            }
-                        }
-                    });
-                }
-            }
-        };
-        secondChannelInitializer = new ChannelInitializer<Channel>() {
-            @Override
-            protected void initChannel(Channel channel) {
-                channel.pipeline().addLast(firstChannelInitializer);
-            }
-        };
-
-        channelHandler = new ChannelInboundHandlerAdapter() {
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object msg) {
-                Channel channel = (Channel) msg;
-                channel.pipeline().addFirst(secondChannelInitializer);
-                ctx.fireChannelRead(msg);
-            }
-        };
-        //Wrapper for the minecraft server connection.
-        WrappedPacket serverConnectionWrapper = new WrappedPacket(new NMSPacket(NMSUtils.getMinecraftServerConnection()));
-        boolean searching = true;
-        for (int i = 0; searching; i++) {
-            try {
-                //Get the list.
-                List<Object> serverChannelList = (List<Object>) serverConnectionWrapper.readObject(i, List.class);
-                for (Object serverChannel : serverChannelList) {
-                    //Is this the server channel list?
-                    if (serverChannel instanceof ChannelFuture) {
-                        //Yes it is...
-                        Channel channel = ((ChannelFuture) serverChannel).channel();
-                        serverChannels.add(channel);
-                        //Add our channel handler to all server channel pipelines.
-                        channel.pipeline().addFirst(channelHandler);
-                        searching = false;
-                    }
-                }
-            } catch (Exception ex) {
-                break;
-            }
-        }
-    }
-
-    /**
-     * Remove our channel handler from all server channel pipelines from the current thread.
-     */
-    @Override
-    public void cleanup() {
-        for (Channel channel : serverChannels) {
-            try {
-                channel.pipeline().remove(channelHandler);
-            } catch (NoSuchElementException ignored) {
-
-            }
-        }
-    }
-
-    /**
-     * Inject a netty channel to listen to packets.
-     * If already injected, get the channel interceptor.
-     *
-     * @param ch Netty channel.
-     * @return {@link PlayerChannelInterceptor}
-     */
-    @Override
-    public PlayerChannelInterceptor injectChannel(Object ch) {
-        Channel channel = (Channel) ch;
-        final String handlerName = PacketEvents.handlerName;
-        try {
-            PlayerChannelInterceptor interceptor = (PlayerChannelInterceptor) channel.pipeline().get(handlerName);
-            if (interceptor == null) {
-                interceptor = new PlayerChannelInterceptor();
-                if (channel.pipeline().get("packet_handler") != null) {
-                    channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
-                }
-            }
-            return interceptor;
-        } catch (IllegalArgumentException ex) {
-            //Let us try again
-            return (PlayerChannelInterceptor) channel.pipeline().get(handlerName);
-        }
-    }
-
-    /**
-     * Eject a netty channel.
-     *
-     * @param ch Netty channel.
-     */
-    @Override
-    public void ejectChannel(Object ch) {
-        Channel channel = (Channel) ch;
-        String handlerName = PacketEvents.handlerName;
-        if (channel.pipeline().get(handlerName) != null) {
-            channel.pipeline().remove(handlerName);
-        }
-    }
-
-    /**
-     * Inject a player on the current thread.
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void injectPlayerSync(Player player) {
-        Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        injectChannel(channel).player = player;
-    }
-
-    /**
-     * Eject a player on the current thread.
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void ejectPlayerSync(Player player) {
-        Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        ejectChannel(channel);
-        PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-        PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-    }
-
-    /**
-     * Inject a player on our custom inject and eject (fixed) thread pool (=asynchronously).
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void injectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-                injectChannel(channel).player = player;
-            }
-        });
-    }
-
-    /**
-     * Eject a player on our custom inject and eject (fixed) thread pool (=asynchronously).
-     *
-     * @param player Target player.
-     */
-    @Override
-    public void ejectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-                ejectChannel(channel);
-                PacketEvents.get().packetHandlerInternal.keepAliveMap.remove(player.getUniqueId());
-                PacketEvents.get().packetHandlerInternal.channelMap.remove(player.getName());
-                PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-                PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-            }
-        });
-    }
-
-    /**
-     * Send a raw NMS packet to a netty channel.
-     *
-     * @param ch     Netty channel.
-     * @param packet Raw NMS Packet.
-     */
-    @Override
-    public void sendPacket(Object ch, Object packet) {
-        Channel channel = (Channel) ch;
-        channel.writeAndFlush(packet);
-    }
-
-    /**
-     * Player channel interceptor.
-     *
-     * @author retrooper
-     * @since 1.8
-     */
-    public static class PlayerChannelInterceptor extends ChannelDuplexHandler {
-        /**
-         * Associated player.
-         * This is null until you inject the player.
-         * (We inject the PLAYER by PlayerLoginEvent or PlayerJoinEvent depending on your settings)
-         */
-        public volatile Player player;
-
-        /**
-         * Incoming packet interception.
-         *
-         * @param ctx    Netty channel handler context.
-         * @param packet Raw NMS Packet.
-         * @throws Exception Possible exception.
-         */
-        @Override
-        public void channelRead(final ChannelHandlerContext ctx, Object packet) throws Exception {
-            packet = PacketEvents.get().packetHandlerInternal.read(player, ctx.channel(), packet);
-            if (packet != null) {
-                super.channelRead(ctx, packet);
-                PacketEvents.get().packetHandlerInternal.postRead(player, ctx.channel(), packet);
-            }
-        }
-
-        /**
-         * Outgoing packet interception.
-         *
-         * @param ctx     Netty channel handler context.
-         * @param packet  Raw NMS Packet
-         * @param promise Netty channel promise.
-         * @throws Exception Possible exception.
-         */
-        @Override
-        public void write(final ChannelHandlerContext ctx, Object packet, final ChannelPromise promise) throws Exception {
-            packet = PacketEvents.get().packetHandlerInternal.write(player, ctx.channel(), packet);
-            if (packet != null) {
-                super.write(ctx, packet, promise);
-                PacketEvents.get().packetHandlerInternal.postWrite(player, ctx.channel(), packet);
-            }
-        }
-    }
-}

src/main/java/io/github/retrooper/packetevents/injector/earlyinjector/EarlyInjector.java

@@ -1,13 +0,0 @@
-package io.github.retrooper.packetevents.injector.earlyinjector;
-
-import io.github.retrooper.packetevents.injector.ChannelInjector;
-
-public interface EarlyInjector extends ChannelInjector {
-    void prepare();
-
-    void cleanup();
-
-    Object injectChannel(Object channel);
-
-    void ejectChannel(Object channel);
-}

src/main/java/io/github/retrooper/packetevents/injector/lateinjector/LateChannelInjector7.java

@@ -1,102 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.injector.lateinjector;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import net.minecraft.util.io.netty.channel.Channel;
-import net.minecraft.util.io.netty.channel.ChannelDuplexHandler;
-import net.minecraft.util.io.netty.channel.ChannelHandlerContext;
-import net.minecraft.util.io.netty.channel.ChannelPromise;
-import org.bukkit.entity.Player;
-
-public class LateChannelInjector7 implements LateInjector {
-    @Override
-    public void injectPlayerSync(Player player) {
-        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object packet) throws Exception {
-                packet = PacketEvents.get().packetHandlerInternal.read(player, ctx.channel(), packet);
-                if (packet != null) {
-                    super.channelRead(ctx, packet);
-                    PacketEvents.get().packetHandlerInternal.postRead(player, ctx.channel(), packet);
-                }
-            }
-
-            @Override
-            public void write(ChannelHandlerContext ctx, Object packet, ChannelPromise promise) throws Exception {
-                packet = PacketEvents.get().packetHandlerInternal.write(player, ctx.channel(), packet);
-                if (packet != null) {
-                    super.write(ctx, packet, promise);
-                    PacketEvents.get().packetHandlerInternal.postWrite(player, ctx.channel(), packet);
-                }
-            }
-        };
-        final Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        channel.pipeline().addBefore("packet_handler", PacketEvents.handlerName, channelDuplexHandler);
-    }
-
-    @Override
-    public void ejectPlayerSync(Player player) {
-        final Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        if (channel.pipeline().get(PacketEvents.handlerName) != null) {
-            channel.pipeline().remove(PacketEvents.handlerName);
-        }
-        PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-        PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-    }
-
-    @Override
-    public void injectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                injectPlayerSync(player);
-            }
-        });
-    }
-
-    @Override
-    public void ejectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                final Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-                if (channel.pipeline().get(PacketEvents.handlerName) != null) {
-                    channel.pipeline().remove(PacketEvents.handlerName);
-                }
-                PacketEvents.get().packetHandlerInternal.keepAliveMap.remove(player.getUniqueId());
-                PacketEvents.get().packetHandlerInternal.channelMap.remove(player.getName());
-                PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-                PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-            }
-        });
-    }
-
-    @Override
-    public void sendPacket(Object rawChannel, Object packet) {
-        Channel channel = (Channel) rawChannel;
-        channel.pipeline().writeAndFlush(packet);
-    }
-}

src/main/java/io/github/retrooper/packetevents/injector/lateinjector/LateChannelInjector8.java

@@ -1,112 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.injector.lateinjector;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.netty.channel.Channel;
-import io.netty.channel.ChannelDuplexHandler;
-import io.netty.channel.ChannelHandlerContext;
-import io.netty.channel.ChannelPromise;
-import org.bukkit.entity.Player;
-
-import java.util.NoSuchElementException;
-
-public class LateChannelInjector8 implements LateInjector {
-    @Override
-    public void injectPlayerSync(Player player) {
-        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object packet) throws Exception {
-                packet = PacketEvents.get().packetHandlerInternal.read(player, ctx.channel(), packet);
-                if (packet != null) {
-                    super.channelRead(ctx, packet);
-                    PacketEvents.get().packetHandlerInternal.postRead(player, ctx.channel(), packet);
-                }
-            }
-
-            @Override
-            public void write(ChannelHandlerContext ctx, Object packet, ChannelPromise promise) throws Exception {
-                packet = PacketEvents.get().packetHandlerInternal.write(player, ctx.channel(), packet);
-                if (packet != null) {
-                    super.write(ctx, packet, promise);
-                    PacketEvents.get().packetHandlerInternal.postWrite(player, ctx.channel(), packet);
-                }
-            }
-        };
-        final Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        channel.pipeline().addBefore("packet_handler", PacketEvents.handlerName, channelDuplexHandler);
-    }
-
-    @Override
-    public void ejectPlayerSync(Player player) {
-        final Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-        if (channel.pipeline().get(PacketEvents.handlerName) != null) {
-            try {
-                channel.pipeline().remove(PacketEvents.handlerName);
-            } catch (NoSuchElementException ignored) {
-
-            }
-        }
-        PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-        PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-    }
-
-    @Override
-    public void injectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                injectPlayerSync(player);
-            }
-        });
-    }
-
-    @Override
-    public void ejectPlayerAsync(Player player) {
-        PacketEvents.get().injectAndEjectExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                final Channel channel = (Channel) PacketEvents.get().packetHandlerInternal.getChannel(player);
-                if (channel.pipeline().get(PacketEvents.handlerName) != null) {
-                    try {
-                        channel.pipeline().remove(PacketEvents.handlerName);
-                    } catch (NoSuchElementException ignored) {
-
-                    }
-                }
-                PacketEvents.get().packetHandlerInternal.keepAliveMap.remove(player.getUniqueId());
-                PacketEvents.get().packetHandlerInternal.channelMap.remove(player.getName());
-                PacketEvents.get().getPlayerUtils().clientVersionsMap.remove(player.getAddress());
-                PacketEvents.get().getPlayerUtils().tempClientVersionMap.remove(player.getAddress());
-            }
-        });
-    }
-
-    @Override
-    public void sendPacket(Object rawChannel, Object packet) {
-        Channel channel = (Channel) rawChannel;
-        channel.pipeline().writeAndFlush(packet);
-    }
-}

src/main/java/io/github/retrooper/packetevents/injector/lateinjector/LateInjector.java

@@ -1,7 +0,0 @@
-package io.github.retrooper.packetevents.injector.lateinjector;
-
-import io.github.retrooper.packetevents.injector.ChannelInjector;
-
-public interface LateInjector extends ChannelInjector {
-
-}

src/main/java/io/github/retrooper/packetevents/injector/legacy/PlayerChannelHandlerLegacy.java

@@ -0,0 +1,67 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.legacy;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.processor.PacketProcessorInternal;
+import net.minecraft.util.io.netty.channel.ChannelDuplexHandler;
+import net.minecraft.util.io.netty.channel.ChannelHandlerContext;
+import net.minecraft.util.io.netty.channel.ChannelPromise;
+import org.bukkit.entity.Player;
+
+import java.util.logging.Level;
+
+public class PlayerChannelHandlerLegacy extends ChannelDuplexHandler {
+    /**
+     * Associated player.
+     * This is null until we inject the player.
+     */
+    public volatile Player player;
+
+    @Override
+    public void channelRead(final ChannelHandlerContext ctx, Object packet) throws Exception {
+        try {
+            PacketProcessorInternal.PacketData data = PacketEvents.get().getInternalPacketProcessor().read(player, ctx.channel(), packet);
+            if (data.packet != null) {
+                super.channelRead(ctx, data.packet);
+                PacketEvents.get().getInternalPacketProcessor().postRead(player, ctx.channel(), data.packet);
+            }
+        } catch (Throwable t) {
+            PacketEvents.get().getPlugin().getLogger().log(Level.SEVERE, "Unable to handle an incoming packet ", t.getMessage());
+        }
+    }
+
+    @Override
+    public void write(final ChannelHandlerContext ctx, Object packet, final ChannelPromise promise) throws Exception {
+        try {
+            PacketProcessorInternal.PacketData data = PacketEvents.get().getInternalPacketProcessor().write(player, ctx.channel(), packet);
+            if (data.postAction != null) {
+                promise.addListener(f -> {
+                    data.postAction.run();
+                });
+            }
+            if (data.packet != null) {
+                super.write(ctx, data.packet, promise);
+                PacketEvents.get().getInternalPacketProcessor().postWrite(player, ctx.channel(), data.packet);
+            }
+        } catch (Throwable t) {
+            PacketEvents.get().getPlugin().getLogger().log(Level.SEVERE, "Unable to handle an outgoing packet ", t.getMessage());
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/legacy/early/EarlyChannelInjectorLegacy.java

@@ -0,0 +1,301 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.legacy.early;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.injector.EarlyInjector;
+import io.github.retrooper.packetevents.injector.legacy.PlayerChannelHandlerLegacy;
+import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.list.ListWrapper;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import net.minecraft.util.io.netty.channel.Channel;
+import net.minecraft.util.io.netty.channel.ChannelFuture;
+import net.minecraft.util.io.netty.channel.ChannelHandler;
+import net.minecraft.util.io.netty.channel.ChannelInitializer;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.PluginDescriptionFile;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class EarlyChannelInjectorLegacy implements EarlyInjector {
+    private final List<ChannelFuture> injectedFutures = new ArrayList<>();
+    private final List<Map<Field, Object>> injectedLists = new ArrayList<>();
+
+    @Override
+    public boolean isBound() {
+        try {
+            Object connection = NMSUtils.getMinecraftServerConnection();
+            if (connection == null) {
+                return false;
+            }
+            for (Field field : connection.getClass().getDeclaredFields()) {
+                field.setAccessible(true);
+                final Object value = field.get(connection);
+                if (value instanceof List) {
+                    // Inject the list
+                    synchronized (value) {
+                        for (Object o : (List<?>) value) {
+                            if (o instanceof ChannelFuture) {
+                                return true;
+                            } else {
+                                break; // not the right list.
+                            }
+                        }
+                    }
+                }
+            }
+        } catch (Exception ignored) {
+        }
+        return false;
+    }
+
+    @Override
+    public void inject() {
+        try {
+            Object serverConnection = NMSUtils.getMinecraftServerConnection();
+            for (Field field : serverConnection.getClass().getDeclaredFields()) {
+                field.setAccessible(true);
+                Object value = null;
+                try {
+                    value = field.get(serverConnection);
+                } catch (IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                if (value instanceof List) {
+                    //Get the list.
+                    List<?> listWrapper = new ListWrapper((List<?>) value) {
+                        @Override
+                        public void processAdd(Object o) {
+                            if (o instanceof ChannelFuture) {
+                                try {
+                                    injectChannelFuture((ChannelFuture) o);
+                                } catch (Exception ex) {
+                                    ex.printStackTrace();
+                                }
+                            }
+                        }
+                    };
+                    HashMap<Field, Object> map = new HashMap<>();
+                    map.put(field, serverConnection);
+                    injectedLists.add(map);
+
+                    field.set(serverConnection, listWrapper);
+
+                    synchronized (listWrapper) {
+                        for (Object serverChannel : (List<?>) value) {
+                            //Is this the server channel future list?
+                            if (serverChannel instanceof ChannelFuture) {
+                                //Yes it is...
+                                injectChannelFuture((ChannelFuture) serverChannel);
+                            } else {
+                                break;//Wrong list
+                            }
+                        }
+                    }
+                }
+            }
+        } catch (Exception ex) {
+            PacketEvents.get().getPlugin().getLogger().severe("PacketEvents failed to inject!");
+            ex.printStackTrace();
+        }
+
+        //Player channels might have been registered already. Let us add our handlers. We are a little late though.
+        //This only happens when you join extremely early on older versions of minecraft.
+        List<Object> networkManagers = NMSUtils.getNetworkManagers();
+        synchronized (networkManagers) {
+            for (Object networkManager : networkManagers) {
+                WrappedPacket networkManagerWrapper = new WrappedPacket(new NMSPacket(networkManager));
+                Channel channel = (Channel) networkManagerWrapper.readObject(0, NMSUtils.nettyChannelClass);
+                if (channel == null) {
+                    continue;
+                }
+
+                if (channel.pipeline().get("packet_handler") != null) {
+                    channel.pipeline().addBefore("packet_handler", PacketEvents.get().getHandlerName(), new PlayerChannelHandlerLegacy());
+                }
+            }
+        }
+    }
+
+
+    private void injectChannelFuture(ChannelFuture channelFuture) {
+        List<String> channelHandlerNames = channelFuture.channel().pipeline().names();
+        ChannelHandler bootstrapAcceptor = null;
+        Field bootstrapAcceptorField = null;
+        for (String handlerName : channelHandlerNames) {
+            ChannelHandler handler = channelFuture.channel().pipeline().get(handlerName);
+            try {
+                bootstrapAcceptorField = handler.getClass().getDeclaredField("childHandler");
+                bootstrapAcceptorField.setAccessible(true);
+                bootstrapAcceptorField.get(handler);
+                bootstrapAcceptor = handler;
+            } catch (Exception ignored) {
+
+            }
+        }
+
+        if (bootstrapAcceptor == null) {
+            bootstrapAcceptor = channelFuture.channel().pipeline().first();
+        }
+
+        ChannelInitializer<?> oldChannelInitializer = null;
+        try {
+            oldChannelInitializer = (ChannelInitializer<?>) bootstrapAcceptorField.get(bootstrapAcceptor);
+
+            ChannelInitializer<?> channelInitializer = new PEChannelInitializerLegacy(oldChannelInitializer);
+
+            //Replace the old channel initializer with our own.
+            bootstrapAcceptorField.setAccessible(true);
+            bootstrapAcceptorField.set(bootstrapAcceptor, channelInitializer);
+
+            injectedFutures.add(channelFuture);
+        } catch (IllegalAccessException e) {
+            ClassLoader cl = bootstrapAcceptor.getClass().getClassLoader();
+            if (cl.getClass().getName().equals("org.bukkit.plugin.java.PluginClassLoader")) {
+                PluginDescriptionFile yaml = null;
+                try {
+                    yaml = (PluginDescriptionFile) PluginDescriptionFile.class.getDeclaredField("description").get(cl);
+                } catch (IllegalAccessException | NoSuchFieldException e2) {
+                    e2.printStackTrace();
+                }
+                throw new IllegalStateException("PacketEvents failed to inject, because of " + bootstrapAcceptor.getClass().getName() + ", you might want to try running without " + yaml.getName() + "?");
+            } else {
+                throw new IllegalStateException("PacketEvents failed to find core component 'childHandler', please check your plugins. issue: " + bootstrapAcceptor.getClass().getName());
+            }
+        }
+
+    }
+
+    @Override
+    public void eject() {
+        Field childHandlerField = null;
+        for (ChannelFuture future : injectedFutures) {
+            List<String> names = future.channel().pipeline().names();
+            ChannelHandler bootstrapAcceptor = null;
+            // Pick best
+            for (String name : names) {
+                try {
+                    ChannelHandler handler = future.channel().pipeline().get(name);
+                    if (childHandlerField == null) {
+                        childHandlerField = handler.getClass().getDeclaredField("childHandler");
+                        childHandlerField.setAccessible(true);
+                    }
+
+                    ChannelInitializer<Channel> oldInit = (ChannelInitializer<Channel>) childHandlerField.get(handler);
+                    if (oldInit instanceof PEChannelInitializerLegacy) {
+                        bootstrapAcceptor = handler;
+                    }
+                } catch (Exception e) {
+                    // Not this one
+                }
+            }
+            // Default to first
+            if (bootstrapAcceptor == null) {
+                bootstrapAcceptor = future.channel().pipeline().first();
+            }
+
+            try {
+                ChannelInitializer<Channel> oldInit = (ChannelInitializer<Channel>) childHandlerField.get(bootstrapAcceptor);
+                if (oldInit instanceof PEChannelInitializerLegacy) {
+                    childHandlerField.setAccessible(true);
+                    childHandlerField.set(bootstrapAcceptor, ((PEChannelInitializerLegacy) oldInit).getOldChannelInitializer());
+                }
+            } catch (Exception e) {
+                PacketEvents.get().getPlugin().getLogger().severe("PacketEvents failed to eject the injection handler! Please reboot!");
+            }
+        }
+        injectedFutures.clear();
+
+        for (Map<Field, Object> map : injectedLists) {
+            try {
+                for (Field key : map.keySet()) {
+                    key.setAccessible(true);
+                    Object o = map.get(key);
+                    if (o instanceof ListWrapper) {
+                        key.set(o, ((ListWrapper) o).getOriginalList());
+                    }
+                }
+
+            } catch (IllegalAccessException e) {
+                PacketEvents.get().getPlugin().getLogger().severe("PacketEvents failed to eject the injection handler! Please reboot!!");
+            }
+        }
+
+        injectedLists.clear();
+    }
+
+    @Override
+    public void injectPlayer(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel != null) {
+            updatePlayerObject(player, channel);
+        }
+    }
+
+    @Override
+    public void ejectPlayer(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel != null) {
+            try {
+                ((Channel) channel).pipeline().remove(PacketEvents.get().getHandlerName());
+            } catch (Exception ignored) {
+
+            }
+        }
+    }
+
+    @Override
+    public boolean hasInjected(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel == null) {
+            return false;
+        }
+        PlayerChannelHandlerLegacy handler = getHandler(channel);
+        return handler != null && handler.player != null;
+    }
+
+    @Override
+    public void sendPacket(Object ch, Object rawNMSPacket) {
+        Channel channel = (Channel) ch;
+        channel.writeAndFlush(rawNMSPacket);
+    }
+
+    private PlayerChannelHandlerLegacy getHandler(Object rawChannel) {
+        Channel channel = (Channel) rawChannel;
+        ChannelHandler handler = channel.pipeline().get(PacketEvents.get().getHandlerName());
+        if (handler instanceof PlayerChannelHandlerLegacy) {
+            return (PlayerChannelHandlerLegacy) handler;
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public void updatePlayerObject(Player player, Object rawChannel) {
+        PlayerChannelHandlerLegacy handler = getHandler(rawChannel);
+        if (handler != null) {
+            handler.player = player;
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/legacy/early/PEChannelInitializerLegacy.java

@@ -0,0 +1,59 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.legacy.early;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.injector.legacy.PlayerChannelHandlerLegacy;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+import net.minecraft.util.io.netty.channel.Channel;
+import net.minecraft.util.io.netty.channel.ChannelInitializer;
+
+import java.lang.reflect.Method;
+
+public class PEChannelInitializerLegacy extends ChannelInitializer<Channel> {
+    private final ChannelInitializer<?> oldChannelInitializer;
+    private Method initChannelMethod;
+
+    public PEChannelInitializerLegacy(ChannelInitializer<?> oldChannelInitializer) {
+        this.oldChannelInitializer = oldChannelInitializer;
+        load();
+    }
+
+    private void load() {
+        initChannelMethod = Reflection.getMethod(oldChannelInitializer.getClass(), "initChannel", 0);
+    }
+
+    public ChannelInitializer<?> getOldChannelInitializer() {
+        return oldChannelInitializer;
+    }
+
+    @Override
+    protected void initChannel(Channel channel) throws Exception {
+        initChannelMethod.invoke(oldChannelInitializer, channel);
+        PlayerChannelHandlerLegacy channelHandler = new PlayerChannelHandlerLegacy();
+        if (channel.pipeline().get("packet_handler") != null) {
+            String handlerName = PacketEvents.get().getHandlerName();
+            if (channel.pipeline().get(handlerName) != null) {
+                PacketEvents.get().getPlugin().getLogger().warning("[PacketEvents] Attempted to initialize a channel twice!");
+            } else {
+                channel.pipeline().addBefore("packet_handler", handlerName, channelHandler);
+            }
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/legacy/late/LateChannelInjectorLegacy.java

@@ -0,0 +1,69 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.legacy.late;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.injector.LateInjector;
+import io.github.retrooper.packetevents.injector.legacy.PlayerChannelHandlerLegacy;
+import net.minecraft.util.io.netty.channel.Channel;
+import org.bukkit.entity.Player;
+
+public class LateChannelInjectorLegacy implements LateInjector {
+    @Override
+    public void inject() {
+
+    }
+
+    @Override
+    public void eject() {
+
+    }
+
+    @Override
+    public void injectPlayer(Player player) {
+        PlayerChannelHandlerLegacy playerChannelHandlerLegacy = new PlayerChannelHandlerLegacy();
+        playerChannelHandlerLegacy.player = player;
+        Channel channel = (Channel) PacketEvents.get().getPlayerUtils().getChannel(player);
+        channel.pipeline().addBefore("packet_handler", PacketEvents.get().getHandlerName(), playerChannelHandlerLegacy);
+    }
+
+    @Override
+    public void ejectPlayer(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel != null) {
+            try {
+                ((Channel) channel).pipeline().remove(PacketEvents.get().getHandlerName());
+            } catch (Exception ignored) {
+
+            }
+        }
+    }
+
+    @Override
+    public boolean hasInjected(Player player) {
+        Channel channel = (Channel) PacketEvents.get().getPlayerUtils().getChannel(player);
+        return channel.pipeline().get(PacketEvents.get().getHandlerName()) != null;
+    }
+
+    @Override
+    public void sendPacket(Object rawChannel, Object packet) {
+        Channel channel = (Channel) rawChannel;
+        channel.pipeline().writeAndFlush(packet);
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/modern/PlayerChannelHandlerModern.java

@@ -0,0 +1,67 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.modern;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.processor.PacketProcessorInternal;
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPromise;
+import org.bukkit.entity.Player;
+
+import java.util.logging.Level;
+
+public class PlayerChannelHandlerModern extends ChannelDuplexHandler {
+    /**
+     * Associated player.
+     * This is null until we inject the player.
+     */
+    public volatile Player player;
+
+    @Override
+    public void channelRead(final ChannelHandlerContext ctx, Object packet) throws Exception {
+        try {
+            PacketProcessorInternal.PacketData data = PacketEvents.get().getInternalPacketProcessor().read(player, ctx.channel(), packet);
+            if (data.packet != null) {
+                super.channelRead(ctx, data.packet);
+                PacketEvents.get().getInternalPacketProcessor().postRead(player, ctx.channel(), data.packet);
+            }
+        } catch (Throwable t) {
+            PacketEvents.get().getPlugin().getLogger().log(Level.SEVERE, "Unable to handle an incoming packet ", t.getMessage());
+        }
+    }
+
+    @Override
+    public void write(final ChannelHandlerContext ctx, Object packet, final ChannelPromise promise) throws Exception {
+        try {
+            PacketProcessorInternal.PacketData data = PacketEvents.get().getInternalPacketProcessor().write(player, ctx.channel(), packet);
+            if (data.postAction != null) {
+                promise.addListener(f -> {
+                    data.postAction.run();
+                });
+            }
+            if (data.packet != null) {
+                super.write(ctx, data.packet, promise);
+                PacketEvents.get().getInternalPacketProcessor().postWrite(player, ctx.channel(), data.packet);
+            }
+        } catch (Throwable t) {
+            PacketEvents.get().getPlugin().getLogger().log(Level.SEVERE, "Unable to handle an outgoing packet ", t.getMessage());
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/modern/early/EarlyChannelInjectorModern.java

@@ -0,0 +1,310 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.modern.early;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.injector.EarlyInjector;
+import io.github.retrooper.packetevents.injector.modern.PlayerChannelHandlerModern;
+import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.list.ListWrapper;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelInitializer;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.PluginDescriptionFile;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class EarlyChannelInjectorModern implements EarlyInjector {
+    private final List<ChannelFuture> injectedFutures = new ArrayList<>();
+    private final List<Map<Field, Object>> injectedLists = new ArrayList<>();
+
+    @Override
+    public boolean isBound() {
+        try {
+            Object connection = NMSUtils.getMinecraftServerConnection();
+            if (connection == null) {
+                return false;
+            }
+            for (Field field : connection.getClass().getDeclaredFields()) {
+                field.setAccessible(true);
+                final Object value = field.get(connection);
+                if (value instanceof List) {
+                    // Inject the list
+                    synchronized (value) {
+                        for (Object o : (List) value) {
+                            if (o instanceof ChannelFuture) {
+                                return true;
+                            } else {
+                                break; // not the right list.
+                            }
+                        }
+                    }
+                }
+            }
+        } catch (Exception e) {
+        }
+        return false;
+    }
+
+    @Override
+    public void inject() {
+        try {
+            if (PaperChannelInjector.PAPER_INJECTION_METHOD) {
+                PaperChannelInjector.setPaperChannelInitializeListener();
+                return;
+            }
+            Object serverConnection = NMSUtils.getMinecraftServerConnection();
+            for (Field field : serverConnection.getClass().getDeclaredFields()) {
+                field.setAccessible(true);
+                Object value = null;
+                try {
+                    value = field.get(serverConnection);
+                } catch (IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                if (value instanceof List) {
+                    //Get the list.
+                    List listWrapper = new ListWrapper((List) value) {
+                        @Override
+                        public void processAdd(Object o) {
+                            if (o instanceof ChannelFuture) {
+                                try {
+                                    injectChannelFuture((ChannelFuture) o);
+                                } catch (Exception ex) {
+                                    ex.printStackTrace();
+                                }
+                            }
+                        }
+                    };
+                    HashMap<Field, Object> map = new HashMap<>();
+                    map.put(field, serverConnection);
+                    injectedLists.add(map);
+
+                    field.set(serverConnection, listWrapper);
+
+                    synchronized (listWrapper) {
+                        for (Object serverChannel : (List) value) {
+                            //Is this the server channel future list?
+                            if (serverChannel instanceof ChannelFuture) {
+                                //Yes it is...
+                                injectChannelFuture((ChannelFuture) serverChannel);
+                            } else {
+                                break;//Wrong list
+                            }
+                        }
+                    }
+                }
+            }
+        } catch (Exception ex) {
+            throw new IllegalStateException("PacketEvents failed to inject!", ex);
+        }
+
+        //Player channels might have been registered already. Let us add our handlers. We are a little late though.
+        //This only happens when you join extremely early on older versions of minecraft.
+        List<Object> networkManagers = NMSUtils.getNetworkManagers();
+        synchronized (networkManagers) {
+            for (Object networkManager : networkManagers) {
+                WrappedPacket networkManagerWrapper = new WrappedPacket(new NMSPacket(networkManager));
+                Channel channel = (Channel) networkManagerWrapper.readObject(0, NMSUtils.nettyChannelClass);
+                if (channel == null) {
+                    continue;
+                }
+
+                if (channel.pipeline().get("packet_handler") != null) {
+                    channel.pipeline().addBefore("packet_handler", PacketEvents.get().getHandlerName(), new PlayerChannelHandlerModern());
+                }
+            }
+        }
+    }
+
+
+    private void injectChannelFuture(ChannelFuture channelFuture) {
+        List<String> channelHandlerNames = channelFuture.channel().pipeline().names();
+        ChannelHandler bootstrapAcceptor = null;
+        Field bootstrapAcceptorField = null;
+        for (String handlerName : channelHandlerNames) {
+            ChannelHandler handler = channelFuture.channel().pipeline().get(handlerName);
+            try {
+                bootstrapAcceptorField = handler.getClass().getDeclaredField("childHandler");
+                bootstrapAcceptorField.setAccessible(true);
+                bootstrapAcceptorField.get(handler);
+                bootstrapAcceptor = handler;
+            } catch (Exception ignored) {
+            }
+        }
+
+        if (bootstrapAcceptor == null) {
+            bootstrapAcceptor = channelFuture.channel().pipeline().first();
+        }
+
+        ChannelInitializer<?> oldChannelInitializer;
+        try {
+            oldChannelInitializer = (ChannelInitializer<?>) bootstrapAcceptorField.get(bootstrapAcceptor);
+
+            ChannelInitializer<?> channelInitializer = new PEChannelInitializerModern(oldChannelInitializer);
+
+            //Replace the old channel initializer with our own.
+            bootstrapAcceptorField.setAccessible(true);
+            bootstrapAcceptorField.set(bootstrapAcceptor, channelInitializer);
+            injectedFutures.add(channelFuture);
+        } catch (IllegalAccessException e) {
+            ClassLoader cl = bootstrapAcceptor.getClass().getClassLoader();
+            if (cl.getClass().getName().equals("org.bukkit.plugin.java.PluginClassLoader")) {
+                PluginDescriptionFile yaml = null;
+                try {
+                    yaml = (PluginDescriptionFile) PluginDescriptionFile.class.getDeclaredField("description").get(cl);
+                } catch (IllegalAccessException | NoSuchFieldException e2) {
+                    e2.printStackTrace();
+                }
+                throw new IllegalStateException("PacketEvents failed to inject, because of " + bootstrapAcceptor.getClass().getName() + ", you might want to try running without " + yaml.getName() + "?");
+            } else {
+                throw new IllegalStateException("PacketEvents failed to find core component 'childHandler', please check your plugins. issue: " + bootstrapAcceptor.getClass().getName());
+            }
+        }
+
+    }
+
+    @Override
+    public void eject() {
+        // TODO: Uninject from players currently online to prevent protocol lib issues.
+        if (PaperChannelInjector.PAPER_INJECTION_METHOD) {
+            try {
+                PaperChannelInjector.removePaperChannelInitializeListener();
+            } catch (ReflectiveOperationException e) {
+                e.printStackTrace();
+            }
+        }
+        Field childHandlerField = null;
+        for (ChannelFuture future : injectedFutures) {
+            List<String> names = future.channel().pipeline().names();
+            ChannelHandler bootstrapAcceptor = null;
+            // Pick best
+            for (String name : names) {
+                try {
+                    ChannelHandler handler = future.channel().pipeline().get(name);
+                    if (childHandlerField == null) {
+                        childHandlerField = handler.getClass().getDeclaredField("childHandler");
+                        childHandlerField.setAccessible(true);
+                    }
+
+                    ChannelInitializer<Channel> oldInit = (ChannelInitializer<Channel>) childHandlerField.get(handler);
+                    if (oldInit instanceof PEChannelInitializerModern) {
+                        bootstrapAcceptor = handler;
+                    }
+                } catch (Exception ignored) {
+                    // Not this one
+                }
+            }
+            // Default to first
+            if (bootstrapAcceptor == null) {
+                bootstrapAcceptor = future.channel().pipeline().first();
+            }
+
+            try {
+                ChannelInitializer<Channel> oldInit = (ChannelInitializer<Channel>) childHandlerField.get(bootstrapAcceptor);
+                if (oldInit instanceof PEChannelInitializerModern) {
+                    childHandlerField.setAccessible(true);
+                    childHandlerField.set(bootstrapAcceptor, ((PEChannelInitializerModern) oldInit).getOldChannelInitializer());
+                }
+            } catch (Exception e) {
+                PacketEvents.get().getPlugin().getLogger().severe("PacketEvents failed to eject the injection handler! Please reboot!");
+            }
+        }
+        injectedFutures.clear();
+
+        for (Map<Field, Object> map : injectedLists) {
+            try {
+                for (Field key : map.keySet()) {
+                    key.setAccessible(true);
+                    Object o = map.get(key);
+                    if (o instanceof ListWrapper) {
+                        key.set(o, ((ListWrapper) o).getOriginalList());
+                    }
+                }
+
+            } catch (IllegalAccessException e) {
+                PacketEvents.get().getPlugin().getLogger().severe("PacketEvents failed to eject the injection handler! Please reboot!!");
+            }
+        }
+
+        injectedLists.clear();
+    }
+
+    @Override
+    public void injectPlayer(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel != null) {
+            updatePlayerObject(player, channel);
+        }
+    }
+
+    @Override
+    public void ejectPlayer(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel != null) {
+            Channel chnl = (Channel) channel;
+            try {
+                chnl.pipeline().remove(PacketEvents.get().getHandlerName());
+            } catch (Exception ignored) {
+            }
+        }
+    }
+
+    @Override
+    public boolean hasInjected(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel == null) {
+            return false;
+        }
+        PlayerChannelHandlerModern handler = getHandler(channel);
+        return handler != null && handler.player != null;
+    }
+
+    @Override
+    public void sendPacket(Object ch, Object rawNMSPacket) {
+        Channel channel = (Channel) ch;
+        channel.writeAndFlush(rawNMSPacket);
+    }
+
+    private PlayerChannelHandlerModern getHandler(Object rawChannel) {
+        Channel channel = (Channel) rawChannel;
+        ChannelHandler handler = channel.pipeline().get(PacketEvents.get().getHandlerName());
+        if (handler instanceof PlayerChannelHandlerModern) {
+            return (PlayerChannelHandlerModern) handler;
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public void updatePlayerObject(Player player, Object rawChannel) {
+        PlayerChannelHandlerModern handler = getHandler(rawChannel);
+        if (handler != null) {
+            handler.player = player;
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/modern/early/PEChannelInitializerModern.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.modern.early;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.injector.modern.PlayerChannelHandlerModern;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelInitializer;
+
+import java.lang.reflect.Method;
+
+public class PEChannelInitializerModern extends ChannelInitializer<Channel> {
+    private final ChannelInitializer<?> oldChannelInitializer;
+    private Method initChannelMethod;
+
+    public PEChannelInitializerModern(ChannelInitializer<?> oldChannelInitializer) {
+        this.oldChannelInitializer = oldChannelInitializer;
+        load();
+    }
+
+    public static void postInitChannel(Channel channel) {
+        PlayerChannelHandlerModern channelHandler = new PlayerChannelHandlerModern();
+        if (channel.pipeline().get("packet_handler") != null) {
+            String handlerName = PacketEvents.get().getHandlerName();
+            if (channel.pipeline().get(handlerName) != null) {
+                PacketEvents.get().getPlugin().getLogger().warning("[PacketEvents] Attempted to initialize a channel twice!");
+            } else {
+                channel.pipeline().addBefore("packet_handler", handlerName, channelHandler);
+            }
+        }
+    }
+
+    private void load() {
+        initChannelMethod = Reflection.getMethod(oldChannelInitializer.getClass(), "initChannel", 0);
+    }
+
+    public ChannelInitializer<?> getOldChannelInitializer() {
+        return oldChannelInitializer;
+    }
+
+    @Override
+    protected void initChannel(Channel channel) throws Exception {
+        initChannelMethod.invoke(oldChannelInitializer, channel);
+        postInitChannel(channel);
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/modern/early/PaperChannelInjector.java

@@ -0,0 +1,67 @@
+/*
+ * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
+ * Copyright (C) 2016-2021 ViaVersion and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.modern.early;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.netty.channel.Channel;
+import net.kyori.adventure.key.Key;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+public class PaperChannelInjector {
+    public static final boolean PAPER_INJECTION_METHOD = hasPaperInjectionMethod();
+
+    private PaperChannelInjector() {
+    }
+
+    public static void setPaperChannelInitializeListener() throws ReflectiveOperationException {
+        // Call io.papermc.paper.network.ChannelInitializeListenerHolder.addListener(net.kyori.adventure.key.Key, io.papermc.paper.network.ChannelInitializeListener)
+        // Create an interface proxy of ChannelInitializeListener
+        Class<?> listenerClass = Class.forName("io.papermc.paper.network.ChannelInitializeListener");
+        Object channelInitializeListener = Proxy.newProxyInstance(EarlyChannelInjectorModern.class.getClassLoader(), new Class[]{listenerClass}, (proxy, method, args) -> {
+            if (method.getName().equals("afterInitChannel")) {
+                PEChannelInitializerModern.postInitChannel((Channel) args[0]);
+                return null;
+            }
+            return method.invoke(proxy, args);
+        });
+
+        Class<?> holderClass = Class.forName("io.papermc.paper.network.ChannelInitializeListenerHolder");
+        Method addListenerMethod = holderClass.getDeclaredMethod("addListener", Key.class, listenerClass);
+        Key key = Key.key(PacketEvents.get().getHandlerName().toLowerCase(), "injector");
+        addListenerMethod.invoke(null, key, channelInitializeListener);
+    }
+
+    public static void removePaperChannelInitializeListener() throws ReflectiveOperationException {
+        Class<?> holderClass = Class.forName("io.papermc.paper.network.ChannelInitializeListenerHolder");
+        Method addListenerMethod = holderClass.getDeclaredMethod("removeListener", Key.class);
+        Key key = Key.key(PacketEvents.get().getHandlerName().toLowerCase(), "injector");
+        addListenerMethod.invoke(null, key);
+    }
+
+    private static boolean hasPaperInjectionMethod() {
+        try {
+            Class.forName("io.papermc.paper.network.ChannelInitializeListener");
+            return true;
+        } catch (ReflectiveOperationException e) {
+            return false;
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/injector/modern/late/LateChannelInjectorModern.java

@@ -0,0 +1,70 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.injector.modern.late;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.injector.LateInjector;
+import io.github.retrooper.packetevents.injector.modern.PlayerChannelHandlerModern;
+import io.netty.channel.Channel;
+import org.bukkit.entity.Player;
+
+public class LateChannelInjectorModern implements LateInjector {
+    @Override
+    public void inject() {
+
+    }
+
+    @Override
+    public void eject() {
+
+    }
+
+    @Override
+    public void injectPlayer(Player player) {
+        PlayerChannelHandlerModern playerChannelHandlerModern = new PlayerChannelHandlerModern();
+        playerChannelHandlerModern.player = player;
+        Channel channel = (Channel) PacketEvents.get().getPlayerUtils().getChannel(player);
+        channel.pipeline().addBefore("packet_handler", PacketEvents.get().getHandlerName(), playerChannelHandlerModern);
+    }
+
+    @Override
+    public void ejectPlayer(Player player) {
+        Object channel = PacketEvents.get().getPlayerUtils().getChannel(player);
+        if (channel != null) {
+            Channel chnl = (Channel) channel;
+            try {
+                chnl.pipeline().remove(PacketEvents.get().getHandlerName());
+            } catch (Exception ex) {
+
+            }
+        }
+    }
+
+    @Override
+    public boolean hasInjected(Player player) {
+        Channel channel = (Channel) PacketEvents.get().getPlayerUtils().getChannel(player);
+        return channel.pipeline().get(PacketEvents.get().getHandlerName()) != null;
+    }
+
+    @Override
+    public void sendPacket(Object rawChannel, Object packet) {
+        Channel channel = (Channel) rawChannel;
+        channel.pipeline().writeAndFlush(packet);
+    }
+}

src/main/java/io/github/retrooper/packetevents/packettype/PacketState.java

@@ -0,0 +1,27 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packettype;
+
+/**
+ * @author retrooper
+ * @since 1.8
+ */
+public enum PacketState {
+    STATUS, HANDSHAKING, LOGIN, PLAY
+}

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packettype;
@@ -27,7 +21,7 @@ package io.github.retrooper.packetevents.packettype;
 import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
 
-import java.util.HashMap;
+import java.util.IdentityHashMap;
 import java.util.Map;
 
 /**
@@ -43,7 +37,28 @@ public class PacketType {
      * If a Packet Type could not be resolved, it will be set to the current value of this constant.
      * This value may change over the versions so it is important to use the variable and not hard code its value.
      */
-    public static final byte INVALID = -1;
+    public static final byte INVALID = -128;
+    public static final Map<Class<?>, Byte> packetIDMap = new IdentityHashMap<>();
+
+    private static void insertPacketID(Class<?> cls, byte packetID) {
+        if (cls != null) {
+            packetIDMap.put(cls, packetID);
+        }
+    }
+
+    public static void load() {
+        Status.Client.load();
+        Status.Server.load();
+
+        Handshaking.Client.load();
+
+        Login.Client.load();
+        Login.Server.load();
+
+        Play.Client.load();
+        Play.Server.load();
+    }
+
     /**
      * Status Packet IDs.
      *
@@ -60,15 +75,11 @@ public class PacketType {
          * @since 1.8
          */
         public static class Client {
-            public static final byte START = 0, PING = 1;
-            public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
+            public static final byte START = -127, PING = -126;
 
-            /**
-             * Load the server-bound status Packet IDs.
-             */
-            public static void init() {
-                packetIds.put(PacketTypeClasses.Status.Client.START, Client.START);
-                packetIds.put(PacketTypeClasses.Status.Client.PING, Client.PING);
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Status.Client.START, Client.START);
+                insertPacketID(PacketTypeClasses.Status.Client.PING, Client.PING);
             }
         }
 
@@ -80,15 +91,34 @@ public class PacketType {
          * @since 1.8
          */
         public static class Server {
-            public static final byte PONG = 0, SERVER_INFO = 1;
-            public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
+            public static final byte PONG = -125, SERVER_INFO = -124;
 
-            /**
-             * Load the client-bound Status Packet IDs.
-             */
-            public static void init() {
-                packetIds.put(PacketTypeClasses.Status.Server.PONG, Server.PONG);
-                packetIds.put(PacketTypeClasses.Status.Server.SERVER_INFO, Server.SERVER_INFO);
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Status.Server.PONG, Server.PONG);
+                insertPacketID(PacketTypeClasses.Status.Server.SERVER_INFO, Server.SERVER_INFO);
+            }
+        }
+    }
+
+    /**
+     * Handshaking Packet IDs.
+     *
+     * @author retrooper
+     * @see <a href="https://wiki.vg/Protocol#Handshaking">https://wiki.vg/Protocol#Handshaking</a>
+     * @since 1.8
+     */
+    public static class Handshaking {
+        /**
+         * Server-bound (client-sided) Handshaking Packet IDs.
+         *
+         * @author retrooper
+         * @since 1.8
+         */
+        public static class Client {
+            public static final byte SET_PROTOCOL = -123;
+
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Handshaking.Client.SET_PROTOCOL, Client.SET_PROTOCOL);
             }
         }
     }
@@ -109,17 +139,12 @@ public class PacketType {
          * @since 1.8
          */
         public static class Client {
-            public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
-            public static final byte HANDSHAKE = 0, CUSTOM_PAYLOAD = 1, START = 2, ENCRYPTION_BEGIN = 3;
+            public static final byte CUSTOM_PAYLOAD = -122, START = -121, ENCRYPTION_BEGIN = -120;
 
-            /**
-             * Load the server-bound Login Packet IDs.
-             */
-            public static void init() {
-                packetIds.put(PacketTypeClasses.Login.Client.HANDSHAKE, Client.HANDSHAKE);
-                packetIds.put(PacketTypeClasses.Login.Client.CUSTOM_PAYLOAD, Client.CUSTOM_PAYLOAD);
-                packetIds.put(PacketTypeClasses.Login.Client.START, Client.START);
-                packetIds.put(PacketTypeClasses.Login.Client.ENCRYPTION_BEGIN, Client.ENCRYPTION_BEGIN);
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Login.Client.CUSTOM_PAYLOAD, Client.CUSTOM_PAYLOAD);
+                insertPacketID(PacketTypeClasses.Login.Client.START, Client.START);
+                insertPacketID(PacketTypeClasses.Login.Client.ENCRYPTION_BEGIN, Client.ENCRYPTION_BEGIN);
             }
         }
 
@@ -131,18 +156,14 @@ public class PacketType {
          * @since 1.8
          */
         public static class Server {
-            public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
-            public static final byte CUSTOM_PAYLOAD = 0, DISCONNECT = 1, ENCRYPTION_BEGIN = 2, SUCCESS = 3, SET_COMPRESSION = 4;
+            public static final byte CUSTOM_PAYLOAD = -119, DISCONNECT = -118, ENCRYPTION_BEGIN = -117, SUCCESS = -116, SET_COMPRESSION = -115;
 
-            /**
-             * Load the client-bound Login Packet IDs.
-             */
-            public static void init() {
-                packetIds.put(PacketTypeClasses.Login.Server.CUSTOM_PAYLOAD, Server.CUSTOM_PAYLOAD);
-                packetIds.put(PacketTypeClasses.Login.Server.DISCONNECT, Server.DISCONNECT);
-                packetIds.put(PacketTypeClasses.Login.Server.ENCRYPTION_BEGIN, Server.ENCRYPTION_BEGIN);
-                packetIds.put(PacketTypeClasses.Login.Server.SUCCESS, Server.SUCCESS);
-                packetIds.put(PacketTypeClasses.Login.Server.SET_COMPRESSION, Server.SET_COMPRESSION);
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Login.Server.CUSTOM_PAYLOAD, Server.CUSTOM_PAYLOAD);
+                insertPacketID(PacketTypeClasses.Login.Server.DISCONNECT, Server.DISCONNECT);
+                insertPacketID(PacketTypeClasses.Login.Server.ENCRYPTION_BEGIN, Server.ENCRYPTION_BEGIN);
+                insertPacketID(PacketTypeClasses.Login.Server.SUCCESS, Server.SUCCESS);
+                insertPacketID(PacketTypeClasses.Login.Server.SET_COMPRESSION, Server.SET_COMPRESSION);
             }
         }
     }
@@ -163,72 +184,68 @@ public class PacketType {
          * @since 1.8
          */
         public static class Client {
-            public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
-            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 final byte TELEPORT_ACCEPT = -114,
+                    TILE_NBT_QUERY = -113, DIFFICULTY_CHANGE = -112, CHAT = -111, CLIENT_COMMAND = -110,
+                    SETTINGS = -109, TAB_COMPLETE = -108, TRANSACTION = -107, ENCHANT_ITEM = -106,
+                    WINDOW_CLICK = -105, CLOSE_WINDOW = -104, CUSTOM_PAYLOAD = -103, B_EDIT = -102,
+                    ENTITY_NBT_QUERY = -101, USE_ENTITY = -100, JIGSAW_GENERATE = -99, KEEP_ALIVE = -98,
+                    DIFFICULTY_LOCK = -97, POSITION = -96, POSITION_LOOK = -95, LOOK = -94,
+                    FLYING = -93, VEHICLE_MOVE = -92, BOAT_MOVE = -91, PICK_ITEM = -90,
+                    AUTO_RECIPE = -89, ABILITIES = -88, BLOCK_DIG = -87, ENTITY_ACTION = -86,
+                    STEER_VEHICLE = -85, RECIPE_DISPLAYED = -84, ITEM_NAME = -83, RESOURCE_PACK_STATUS = -82,
+                    ADVANCEMENTS = -81, TR_SEL = -80, BEACON = -79, HELD_ITEM_SLOT = -78,
+                    SET_COMMAND_BLOCK = -77, SET_COMMAND_MINECART = -76, SET_CREATIVE_SLOT = -75, SET_JIGSAW = -74,
+                    STRUCT = -73, UPDATE_SIGN = -72, ARM_ANIMATION = -71, SPECTATE = -70,
+                    USE_ITEM = -69, BLOCK_PLACE = -68;
 
-            /**
-             * Load the server-bound Play Packet IDs.
-             */
-            public static void init() {
-                packetIds.put(PacketTypeClasses.Play.Client.TELEPORT_ACCEPT, TELEPORT_ACCEPT);
-                packetIds.put(PacketTypeClasses.Play.Client.TILE_NBT_QUERY, TILE_NBT_QUERY);
-                packetIds.put(PacketTypeClasses.Play.Client.DIFFICULTY_CHANGE, DIFFICULTY_CHANGE);
-                packetIds.put(PacketTypeClasses.Play.Client.CHAT, CHAT);
-                packetIds.put(PacketTypeClasses.Play.Client.CLIENT_COMMAND, CLIENT_COMMAND);
-                packetIds.put(PacketTypeClasses.Play.Client.SETTINGS, SETTINGS);
-                packetIds.put(PacketTypeClasses.Play.Client.TAB_COMPLETE, TAB_COMPLETE);
-                packetIds.put(PacketTypeClasses.Play.Client.TRANSACTION, TRANSACTION);
-                packetIds.put(PacketTypeClasses.Play.Client.ENCHANT_ITEM, ENCHANT_ITEM);
-                packetIds.put(PacketTypeClasses.Play.Client.WINDOW_CLICK, WINDOW_CLICK);
-                packetIds.put(PacketTypeClasses.Play.Client.CLOSE_WINDOW, CLOSE_WINDOW);
-                packetIds.put(PacketTypeClasses.Play.Client.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
-                packetIds.put(PacketTypeClasses.Play.Client.B_EDIT, B_EDIT);
-                packetIds.put(PacketTypeClasses.Play.Client.ENTITY_NBT_QUERY, ENTITY_NBT_QUERY);
-                packetIds.put(PacketTypeClasses.Play.Client.USE_ENTITY, USE_ENTITY);
-                packetIds.put(PacketTypeClasses.Play.Client.JIGSAW_GENERATE, JIGSAW_GENERATE);
-                packetIds.put(PacketTypeClasses.Play.Client.KEEP_ALIVE, KEEP_ALIVE);
-                packetIds.put(PacketTypeClasses.Play.Client.DIFFICULTY_LOCK, DIFFICULTY_LOCK);
-                packetIds.put(PacketTypeClasses.Play.Client.POSITION, POSITION);
-                packetIds.put(PacketTypeClasses.Play.Client.POSITION_LOOK, POSITION_LOOK);
-                packetIds.put(PacketTypeClasses.Play.Client.LOOK, LOOK);
-                packetIds.put(PacketTypeClasses.Play.Client.FLYING, FLYING);
-                packetIds.put(PacketTypeClasses.Play.Client.VEHICLE_MOVE, VEHICLE_MOVE);
-                packetIds.put(PacketTypeClasses.Play.Client.BOAT_MOVE, BOAT_MOVE);
-                packetIds.put(PacketTypeClasses.Play.Client.PICK_ITEM, PICK_ITEM);
-                packetIds.put(PacketTypeClasses.Play.Client.AUTO_RECIPE, AUTO_RECIPE);
-                packetIds.put(PacketTypeClasses.Play.Client.ABILITIES, ABILITIES);
-                packetIds.put(PacketTypeClasses.Play.Client.BLOCK_DIG, BLOCK_DIG);
-                packetIds.put(PacketTypeClasses.Play.Client.ENTITY_ACTION, ENTITY_ACTION);
-                packetIds.put(PacketTypeClasses.Play.Client.STEER_VEHICLE, STEER_VEHICLE);
-                packetIds.put(PacketTypeClasses.Play.Client.RECIPE_DISPLAYED, RECIPE_DISPLAYED);
-                packetIds.put(PacketTypeClasses.Play.Client.ITEM_NAME, ITEM_NAME);
-                packetIds.put(PacketTypeClasses.Play.Client.RESOURCE_PACK_STATUS, RESOURCE_PACK_STATUS);
-                packetIds.put(PacketTypeClasses.Play.Client.ADVANCEMENTS, ADVANCEMENTS);
-                packetIds.put(PacketTypeClasses.Play.Client.TR_SEL, TR_SEL);
-                packetIds.put(PacketTypeClasses.Play.Client.BEACON, BEACON);
-                packetIds.put(PacketTypeClasses.Play.Client.HELD_ITEM_SLOT, HELD_ITEM_SLOT);
-                packetIds.put(PacketTypeClasses.Play.Client.SET_COMMAND_BLOCK, SET_COMMAND_BLOCK);
-                packetIds.put(PacketTypeClasses.Play.Client.SET_COMMAND_MINECART, SET_COMMAND_MINECART);
-                packetIds.put(PacketTypeClasses.Play.Client.SET_CREATIVE_SLOT, SET_CREATIVE_SLOT);
-                packetIds.put(PacketTypeClasses.Play.Client.SET_JIGSAW, SET_JIGSAW);
-                packetIds.put(PacketTypeClasses.Play.Client.STRUCT, STRUCT);
-                packetIds.put(PacketTypeClasses.Play.Client.UPDATE_SIGN, UPDATE_SIGN);
-                packetIds.put(PacketTypeClasses.Play.Client.ARM_ANIMATION, ARM_ANIMATION);
-                packetIds.put(PacketTypeClasses.Play.Client.SPECTATE, SPECTATE);
-                packetIds.put(PacketTypeClasses.Play.Client.USE_ITEM, USE_ITEM);
-                packetIds.put(PacketTypeClasses.Play.Client.BLOCK_PLACE, BLOCK_PLACE);
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Play.Client.TELEPORT_ACCEPT, TELEPORT_ACCEPT);
+                insertPacketID(PacketTypeClasses.Play.Client.TILE_NBT_QUERY, TILE_NBT_QUERY);
+                insertPacketID(PacketTypeClasses.Play.Client.DIFFICULTY_CHANGE, DIFFICULTY_CHANGE);
+                insertPacketID(PacketTypeClasses.Play.Client.CHAT, CHAT);
+                insertPacketID(PacketTypeClasses.Play.Client.CLIENT_COMMAND, CLIENT_COMMAND);
+                insertPacketID(PacketTypeClasses.Play.Client.SETTINGS, SETTINGS);
+                insertPacketID(PacketTypeClasses.Play.Client.TAB_COMPLETE, TAB_COMPLETE);
+                insertPacketID(PacketTypeClasses.Play.Client.TRANSACTION, TRANSACTION);
+                insertPacketID(PacketTypeClasses.Play.Client.ENCHANT_ITEM, ENCHANT_ITEM);
+                insertPacketID(PacketTypeClasses.Play.Client.WINDOW_CLICK, WINDOW_CLICK);
+                insertPacketID(PacketTypeClasses.Play.Client.CLOSE_WINDOW, CLOSE_WINDOW);
+                insertPacketID(PacketTypeClasses.Play.Client.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
+                insertPacketID(PacketTypeClasses.Play.Client.B_EDIT, B_EDIT);
+                insertPacketID(PacketTypeClasses.Play.Client.ENTITY_NBT_QUERY, ENTITY_NBT_QUERY);
+                insertPacketID(PacketTypeClasses.Play.Client.USE_ENTITY, USE_ENTITY);
+                insertPacketID(PacketTypeClasses.Play.Client.JIGSAW_GENERATE, JIGSAW_GENERATE);
+                insertPacketID(PacketTypeClasses.Play.Client.KEEP_ALIVE, KEEP_ALIVE);
+                insertPacketID(PacketTypeClasses.Play.Client.DIFFICULTY_LOCK, DIFFICULTY_LOCK);
+                insertPacketID(PacketTypeClasses.Play.Client.POSITION, POSITION);
+                insertPacketID(PacketTypeClasses.Play.Client.POSITION_LOOK, POSITION_LOOK);
+                insertPacketID(PacketTypeClasses.Play.Client.LOOK, LOOK);
+                insertPacketID(PacketTypeClasses.Play.Client.FLYING, FLYING);
+                insertPacketID(PacketTypeClasses.Play.Client.VEHICLE_MOVE, VEHICLE_MOVE);
+                insertPacketID(PacketTypeClasses.Play.Client.BOAT_MOVE, BOAT_MOVE);
+                insertPacketID(PacketTypeClasses.Play.Client.PICK_ITEM, PICK_ITEM);
+                insertPacketID(PacketTypeClasses.Play.Client.AUTO_RECIPE, AUTO_RECIPE);
+                insertPacketID(PacketTypeClasses.Play.Client.ABILITIES, ABILITIES);
+                insertPacketID(PacketTypeClasses.Play.Client.BLOCK_DIG, BLOCK_DIG);
+                insertPacketID(PacketTypeClasses.Play.Client.ENTITY_ACTION, ENTITY_ACTION);
+                insertPacketID(PacketTypeClasses.Play.Client.STEER_VEHICLE, STEER_VEHICLE);
+                insertPacketID(PacketTypeClasses.Play.Client.RECIPE_DISPLAYED, RECIPE_DISPLAYED);
+                insertPacketID(PacketTypeClasses.Play.Client.ITEM_NAME, ITEM_NAME);
+                insertPacketID(PacketTypeClasses.Play.Client.RESOURCE_PACK_STATUS, RESOURCE_PACK_STATUS);
+                insertPacketID(PacketTypeClasses.Play.Client.ADVANCEMENTS, ADVANCEMENTS);
+                insertPacketID(PacketTypeClasses.Play.Client.TR_SEL, TR_SEL);
+                insertPacketID(PacketTypeClasses.Play.Client.BEACON, BEACON);
+                insertPacketID(PacketTypeClasses.Play.Client.HELD_ITEM_SLOT, HELD_ITEM_SLOT);
+                insertPacketID(PacketTypeClasses.Play.Client.SET_COMMAND_BLOCK, SET_COMMAND_BLOCK);
+                insertPacketID(PacketTypeClasses.Play.Client.SET_COMMAND_MINECART, SET_COMMAND_MINECART);
+                insertPacketID(PacketTypeClasses.Play.Client.SET_CREATIVE_SLOT, SET_CREATIVE_SLOT);
+                insertPacketID(PacketTypeClasses.Play.Client.SET_JIGSAW, SET_JIGSAW);
+                insertPacketID(PacketTypeClasses.Play.Client.STRUCT, STRUCT);
+                insertPacketID(PacketTypeClasses.Play.Client.UPDATE_SIGN, UPDATE_SIGN);
+                insertPacketID(PacketTypeClasses.Play.Client.ARM_ANIMATION, ARM_ANIMATION);
+                insertPacketID(PacketTypeClasses.Play.Client.SPECTATE, SPECTATE);
+                insertPacketID(PacketTypeClasses.Play.Client.USE_ITEM, USE_ITEM);
+                insertPacketID(PacketTypeClasses.Play.Client.BLOCK_PLACE, BLOCK_PLACE);
             }
 
             /**
@@ -270,8 +287,8 @@ public class PacketType {
                 public static boolean isBlockPlace(final byte packetID) {
                     final ServerVersion version = PacketEvents.get().getServerUtils().getVersion();
                     return version.isNewerThan(ServerVersion.v_1_8_8) ?
-                            packetID == Client.USE_ITEM
-                            : packetID == Client.BLOCK_PLACE;
+                            packetID == PacketType.Play.Client.USE_ITEM
+                            : packetID == PacketType.Play.Client.BLOCK_PLACE;
                 }
             }
         }
@@ -284,132 +301,128 @@ public class PacketType {
          * @since 1.8
          */
         public static class Server {
-            public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
-            public static final 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, NAMED_ENTITY_SPAWN = 94;
+            public static final byte SPAWN_ENTITY = -67, SPAWN_ENTITY_EXPERIENCE_ORB = -66, SPAWN_ENTITY_WEATHER = -65, SPAWN_ENTITY_LIVING = -64,
+                    SPAWN_ENTITY_PAINTING = -63, SPAWN_ENTITY_SPAWN = -62, ANIMATION = -61, STATISTIC = -60,
+                    BLOCK_BREAK = -59, BLOCK_BREAK_ANIMATION = -58, TILE_ENTITY_DATA = -57, BLOCK_ACTION = -56,
+                    BLOCK_CHANGE = -55, BOSS = -54, SERVER_DIFFICULTY = -53, CHAT = -52, MULTI_BLOCK_CHANGE = -51,
+                    TAB_COMPLETE = -50, COMMANDS = -49, TRANSACTION = -48, CLOSE_WINDOW = -47,
+                    WINDOW_ITEMS = -46, WINDOW_DATA = -45, SET_SLOT = -44, SET_COOLDOWN = -43,
+                    CUSTOM_PAYLOAD = -42, CUSTOM_SOUND_EFFECT = -41, KICK_DISCONNECT = -40, ENTITY_STATUS = -39,
+                    EXPLOSION = -38, UNLOAD_CHUNK = -37, GAME_STATE_CHANGE = -36, OPEN_WINDOW_HORSE = -35,
+                    KEEP_ALIVE = -34, MAP_CHUNK = -33, WORLD_EVENT = -32, WORLD_PARTICLES = -31,
+                    LIGHT_UPDATE = -30, LOGIN = -29, MAP = -28, OPEN_WINDOW_MERCHANT = -27,
+                    REL_ENTITY_MOVE = -26, REL_ENTITY_MOVE_LOOK = -25, ENTITY_LOOK = -24, ENTITY = -23,
+                    VEHICLE_MOVE = -22, OPEN_BOOK = -21, OPEN_WINDOW = -20, OPEN_SIGN_EDITOR = -19,
+                    AUTO_RECIPE = -18, ABILITIES = -17, COMBAT_EVENT = -16, PLAYER_INFO = -15,
+                    LOOK_AT = -14, POSITION = -13, RECIPES = -12, ENTITY_DESTROY = -11,
+                    REMOVE_ENTITY_EFFECT = -10, RESOURCE_PACK_SEND = -9, RESPAWN = -8, ENTITY_HEAD_ROTATION = -7,
+                    SELECT_ADVANCEMENT_TAB = -6, WORLD_BORDER = -5, CAMERA = -4, HELD_ITEM_SLOT = -3,
+                    VIEW_CENTRE = -2, VIEW_DISTANCE = -1, SCOREBOARD_DISPLAY_OBJECTIVE = 0, ENTITY_METADATA = 1,
+                    ATTACH_ENTITY = 2, ENTITY_VELOCITY = 3, ENTITY_EQUIPMENT = 4, EXPERIENCE = 5,
+                    UPDATE_HEALTH = 6, SCOREBOARD_OBJECTIVE = 7, MOUNT = 8, SCOREBOARD_TEAM = 9,
+                    SCOREBOARD_SCORE = 10, SPAWN_POSITION = 11, UPDATE_TIME = 12, TITLE = 13,
+                    ENTITY_SOUND = 14, NAMED_SOUND_EFFECT = 15, STOP_SOUND = 16, PLAYER_LIST_HEADER_FOOTER = 17,
+                    NBT_QUERY = 18, COLLECT = 19, ENTITY_TELEPORT = 20, ADVANCEMENTS = 21, UPDATE_ATTRIBUTES = 22,
+                    ENTITY_EFFECT = 23, RECIPE_UPDATE = 24, TAGS = 25, MAP_CHUNK_BULK = 26, NAMED_ENTITY_SPAWN = 27;
 
-            /**
-             * Load the client-bound Play Packet IDs.
-             */
-            public static void init() {
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY, SPAWN_ENTITY);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY_EXPERIENCE_ORB, SPAWN_ENTITY_EXPERIENCE_ORB);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY_WEATHER, SPAWN_ENTITY_WEATHER);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY_LIVING, SPAWN_ENTITY_LIVING);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY_PAINTING, SPAWN_ENTITY_PAINTING);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY_SPAWN, SPAWN_ENTITY_SPAWN);
-                packetIds.put(PacketTypeClasses.Play.Server.ANIMATION, ANIMATION);
-                packetIds.put(PacketTypeClasses.Play.Server.STATISTIC, STATISTIC);
-                packetIds.put(PacketTypeClasses.Play.Server.BLOCK_BREAK, BLOCK_BREAK);
-                packetIds.put(PacketTypeClasses.Play.Server.BLOCK_BREAK_ANIMATION, BLOCK_BREAK_ANIMATION);
-                packetIds.put(PacketTypeClasses.Play.Server.TILE_ENTITY_DATA, TILE_ENTITY_DATA);
-                packetIds.put(PacketTypeClasses.Play.Server.BLOCK_ACTION, BLOCK_ACTION);
-                packetIds.put(PacketTypeClasses.Play.Server.BLOCK_CHANGE, BLOCK_CHANGE);
-                packetIds.put(PacketTypeClasses.Play.Server.BOSS, BOSS);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_ENTITY, SPAWN_ENTITY);
-                packetIds.put(PacketTypeClasses.Play.Server.SERVER_DIFFICULTY, SERVER_DIFFICULTY);
-                packetIds.put(PacketTypeClasses.Play.Server.CHAT, CHAT);
-                packetIds.put(PacketTypeClasses.Play.Server.MULTI_BLOCK_CHANGE, MULTI_BLOCK_CHANGE);
-                packetIds.put(PacketTypeClasses.Play.Server.TAB_COMPLETE, TAB_COMPLETE);
-                packetIds.put(PacketTypeClasses.Play.Server.COMMANDS, COMMANDS);
-                packetIds.put(PacketTypeClasses.Play.Server.TRANSACTION, TRANSACTION);
-                packetIds.put(PacketTypeClasses.Play.Server.CLOSE_WINDOW, CLOSE_WINDOW);
-                packetIds.put(PacketTypeClasses.Play.Server.WINDOW_ITEMS, WINDOW_ITEMS);
-                packetIds.put(PacketTypeClasses.Play.Server.WINDOW_DATA, WINDOW_DATA);
-                packetIds.put(PacketTypeClasses.Play.Server.SET_SLOT, SET_SLOT);
-                packetIds.put(PacketTypeClasses.Play.Server.SET_COOLDOWN, SET_COOLDOWN);
-                packetIds.put(PacketTypeClasses.Play.Server.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
-                packetIds.put(PacketTypeClasses.Play.Server.CUSTOM_SOUND_EFFECT, CUSTOM_SOUND_EFFECT);
-                packetIds.put(PacketTypeClasses.Play.Server.KICK_DISCONNECT, KICK_DISCONNECT);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_STATUS, ENTITY_STATUS);
-                packetIds.put(PacketTypeClasses.Play.Server.EXPLOSION, EXPLOSION);
-                packetIds.put(PacketTypeClasses.Play.Server.UNLOAD_CHUNK, UNLOAD_CHUNK);
-                packetIds.put(PacketTypeClasses.Play.Server.GAME_STATE_CHANGE, GAME_STATE_CHANGE);
-                packetIds.put(PacketTypeClasses.Play.Server.OPEN_WINDOW_HORSE, OPEN_WINDOW_HORSE);
-                packetIds.put(PacketTypeClasses.Play.Server.KEEP_ALIVE, KEEP_ALIVE);
-                packetIds.put(PacketTypeClasses.Play.Server.MAP_CHUNK, MAP_CHUNK);
-                packetIds.put(PacketTypeClasses.Play.Server.WORLD_EVENT, WORLD_EVENT);
-                packetIds.put(PacketTypeClasses.Play.Server.WORLD_EVENT, SPAWN_ENTITY);
-                packetIds.put(PacketTypeClasses.Play.Server.WORLD_PARTICLES, WORLD_PARTICLES);
-                packetIds.put(PacketTypeClasses.Play.Server.LIGHT_UPDATE, LIGHT_UPDATE);
-                packetIds.put(PacketTypeClasses.Play.Server.LOGIN, LOGIN);
-                packetIds.put(PacketTypeClasses.Play.Server.MAP, MAP);
-                packetIds.put(PacketTypeClasses.Play.Server.OPEN_WINDOW_MERCHANT, OPEN_WINDOW_MERCHANT);
-                packetIds.put(PacketTypeClasses.Play.Server.REL_ENTITY_MOVE, REL_ENTITY_MOVE);
-                packetIds.put(PacketTypeClasses.Play.Server.REL_ENTITY_MOVE_LOOK, REL_ENTITY_MOVE_LOOK);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_LOOK, ENTITY_LOOK);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY, ENTITY);
-                packetIds.put(PacketTypeClasses.Play.Server.VEHICLE_MOVE, VEHICLE_MOVE);
-                packetIds.put(PacketTypeClasses.Play.Server.OPEN_BOOK, OPEN_BOOK);
-                packetIds.put(PacketTypeClasses.Play.Server.OPEN_WINDOW, OPEN_WINDOW);
-                packetIds.put(PacketTypeClasses.Play.Server.OPEN_SIGN_EDITOR, OPEN_SIGN_EDITOR);
-                packetIds.put(PacketTypeClasses.Play.Server.AUTO_RECIPE, AUTO_RECIPE);
-                packetIds.put(PacketTypeClasses.Play.Server.ABILITIES, ABILITIES);
-                packetIds.put(PacketTypeClasses.Play.Server.COMBAT_EVENT, COMBAT_EVENT);
-                packetIds.put(PacketTypeClasses.Play.Server.PLAYER_INFO, PLAYER_INFO);
-                packetIds.put(PacketTypeClasses.Play.Server.LOOK_AT, LOOK_AT);
-                packetIds.put(PacketTypeClasses.Play.Server.POSITION, POSITION);
-                packetIds.put(PacketTypeClasses.Play.Server.RECIPES, RECIPES);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_DESTROY, ENTITY_DESTROY);
-                packetIds.put(PacketTypeClasses.Play.Server.REMOVE_ENTITY_EFFECT, REMOVE_ENTITY_EFFECT);
-                packetIds.put(PacketTypeClasses.Play.Server.RESOURCE_PACK_SEND, RESOURCE_PACK_SEND);
-                packetIds.put(PacketTypeClasses.Play.Server.RESPAWN, RESPAWN);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_HEAD_ROTATION, ENTITY_HEAD_ROTATION);
-                packetIds.put(PacketTypeClasses.Play.Server.SELECT_ADVANCEMENT_TAB, SELECT_ADVANCEMENT_TAB);
-                packetIds.put(PacketTypeClasses.Play.Server.WORLD_BORDER, WORLD_BORDER);
-                packetIds.put(PacketTypeClasses.Play.Server.CAMERA, CAMERA);
-                packetIds.put(PacketTypeClasses.Play.Server.HELD_ITEM_SLOT, HELD_ITEM_SLOT);
-                packetIds.put(PacketTypeClasses.Play.Server.VIEW_CENTRE, VIEW_CENTRE);
-                packetIds.put(PacketTypeClasses.Play.Server.VIEW_DISTANCE, VIEW_DISTANCE);
-                packetIds.put(PacketTypeClasses.Play.Server.SCOREBOARD_DISPLAY_OBJECTIVE, SCOREBOARD_DISPLAY_OBJECTIVE);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_METADATA, ENTITY_METADATA);
-                packetIds.put(PacketTypeClasses.Play.Server.ATTACH_ENTITY, ATTACH_ENTITY);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_VELOCITY, ENTITY_VELOCITY);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_EQUIPMENT, ENTITY_EQUIPMENT);
-                packetIds.put(PacketTypeClasses.Play.Server.EXPERIENCE, EXPERIENCE);
-                packetIds.put(PacketTypeClasses.Play.Server.UPDATE_HEALTH, UPDATE_HEALTH);
-                packetIds.put(PacketTypeClasses.Play.Server.SCOREBOARD_OBJECTIVE, SCOREBOARD_OBJECTIVE);
-                packetIds.put(PacketTypeClasses.Play.Server.MOUNT, MOUNT);
-                packetIds.put(PacketTypeClasses.Play.Server.SCOREBOARD_TEAM, SCOREBOARD_TEAM);
-                packetIds.put(PacketTypeClasses.Play.Server.SCOREBOARD_SCORE, SCOREBOARD_SCORE);
-                packetIds.put(PacketTypeClasses.Play.Server.SPAWN_POSITION, SPAWN_POSITION);
-                packetIds.put(PacketTypeClasses.Play.Server.UPDATE_TIME, UPDATE_TIME);
-                packetIds.put(PacketTypeClasses.Play.Server.TITLE, TITLE);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_SOUND, ENTITY_SOUND);
-                packetIds.put(PacketTypeClasses.Play.Server.NAMED_SOUND_EFFECT, NAMED_SOUND_EFFECT);
-                packetIds.put(PacketTypeClasses.Play.Server.STOP_SOUND, STOP_SOUND);
-                packetIds.put(PacketTypeClasses.Play.Server.PLAYER_LIST_HEADER_FOOTER, PLAYER_LIST_HEADER_FOOTER);
-                packetIds.put(PacketTypeClasses.Play.Server.NBT_QUERY, NBT_QUERY);
-                packetIds.put(PacketTypeClasses.Play.Server.COLLECT, COLLECT);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_TELEPORT, ENTITY_TELEPORT);
-                packetIds.put(PacketTypeClasses.Play.Server.ADVANCEMENTS, ADVANCEMENTS);
-                packetIds.put(PacketTypeClasses.Play.Server.UPDATE_ATTRIBUTES, UPDATE_ATTRIBUTES);
-                packetIds.put(PacketTypeClasses.Play.Server.ENTITY_EFFECT, ENTITY_EFFECT);
-                packetIds.put(PacketTypeClasses.Play.Server.RECIPE_UPDATE, RECIPE_UPDATE);
-                packetIds.put(PacketTypeClasses.Play.Server.TAGS, TAGS);
-                packetIds.put(PacketTypeClasses.Play.Server.MAP_CHUNK_BULK, MAP_CHUNK_BULK);
-                packetIds.put(PacketTypeClasses.Play.Server.NAMED_ENTITY_SPAWN, NAMED_ENTITY_SPAWN);
+            private static void load() {
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY, SPAWN_ENTITY);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY_EXPERIENCE_ORB, SPAWN_ENTITY_EXPERIENCE_ORB);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY_WEATHER, SPAWN_ENTITY_WEATHER);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY_LIVING, SPAWN_ENTITY_LIVING);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY_PAINTING, SPAWN_ENTITY_PAINTING);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY_SPAWN, SPAWN_ENTITY_SPAWN);
+                insertPacketID(PacketTypeClasses.Play.Server.ANIMATION, ANIMATION);
+                insertPacketID(PacketTypeClasses.Play.Server.STATISTIC, STATISTIC);
+                insertPacketID(PacketTypeClasses.Play.Server.BLOCK_BREAK, BLOCK_BREAK);
+                insertPacketID(PacketTypeClasses.Play.Server.BLOCK_BREAK_ANIMATION, BLOCK_BREAK_ANIMATION);
+                insertPacketID(PacketTypeClasses.Play.Server.TILE_ENTITY_DATA, TILE_ENTITY_DATA);
+                insertPacketID(PacketTypeClasses.Play.Server.BLOCK_ACTION, BLOCK_ACTION);
+                insertPacketID(PacketTypeClasses.Play.Server.BLOCK_CHANGE, BLOCK_CHANGE);
+                insertPacketID(PacketTypeClasses.Play.Server.BOSS, BOSS);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_ENTITY, SPAWN_ENTITY);
+                insertPacketID(PacketTypeClasses.Play.Server.SERVER_DIFFICULTY, SERVER_DIFFICULTY);
+                insertPacketID(PacketTypeClasses.Play.Server.CHAT, CHAT);
+                insertPacketID(PacketTypeClasses.Play.Server.MULTI_BLOCK_CHANGE, MULTI_BLOCK_CHANGE);
+                insertPacketID(PacketTypeClasses.Play.Server.TAB_COMPLETE, TAB_COMPLETE);
+                insertPacketID(PacketTypeClasses.Play.Server.COMMANDS, COMMANDS);
+                insertPacketID(PacketTypeClasses.Play.Server.TRANSACTION, TRANSACTION);
+                insertPacketID(PacketTypeClasses.Play.Server.CLOSE_WINDOW, CLOSE_WINDOW);
+                insertPacketID(PacketTypeClasses.Play.Server.WINDOW_ITEMS, WINDOW_ITEMS);
+                insertPacketID(PacketTypeClasses.Play.Server.WINDOW_DATA, WINDOW_DATA);
+                insertPacketID(PacketTypeClasses.Play.Server.SET_SLOT, SET_SLOT);
+                insertPacketID(PacketTypeClasses.Play.Server.SET_COOLDOWN, SET_COOLDOWN);
+                insertPacketID(PacketTypeClasses.Play.Server.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
+                insertPacketID(PacketTypeClasses.Play.Server.CUSTOM_SOUND_EFFECT, CUSTOM_SOUND_EFFECT);
+                insertPacketID(PacketTypeClasses.Play.Server.KICK_DISCONNECT, KICK_DISCONNECT);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_STATUS, ENTITY_STATUS);
+                insertPacketID(PacketTypeClasses.Play.Server.EXPLOSION, EXPLOSION);
+                insertPacketID(PacketTypeClasses.Play.Server.UNLOAD_CHUNK, UNLOAD_CHUNK);
+                insertPacketID(PacketTypeClasses.Play.Server.GAME_STATE_CHANGE, GAME_STATE_CHANGE);
+                insertPacketID(PacketTypeClasses.Play.Server.OPEN_WINDOW_HORSE, OPEN_WINDOW_HORSE);
+                insertPacketID(PacketTypeClasses.Play.Server.KEEP_ALIVE, KEEP_ALIVE);
+                insertPacketID(PacketTypeClasses.Play.Server.MAP_CHUNK, MAP_CHUNK);
+                insertPacketID(PacketTypeClasses.Play.Server.WORLD_EVENT, WORLD_EVENT);
+                insertPacketID(PacketTypeClasses.Play.Server.WORLD_EVENT, SPAWN_ENTITY);
+                insertPacketID(PacketTypeClasses.Play.Server.WORLD_PARTICLES, WORLD_PARTICLES);
+                insertPacketID(PacketTypeClasses.Play.Server.LIGHT_UPDATE, LIGHT_UPDATE);
+                insertPacketID(PacketTypeClasses.Play.Server.LOGIN, LOGIN);
+                insertPacketID(PacketTypeClasses.Play.Server.MAP, MAP);
+                insertPacketID(PacketTypeClasses.Play.Server.OPEN_WINDOW_MERCHANT, OPEN_WINDOW_MERCHANT);
+                insertPacketID(PacketTypeClasses.Play.Server.REL_ENTITY_MOVE, REL_ENTITY_MOVE);
+                insertPacketID(PacketTypeClasses.Play.Server.REL_ENTITY_MOVE_LOOK, REL_ENTITY_MOVE_LOOK);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_LOOK, ENTITY_LOOK);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY, ENTITY);
+                insertPacketID(PacketTypeClasses.Play.Server.VEHICLE_MOVE, VEHICLE_MOVE);
+                insertPacketID(PacketTypeClasses.Play.Server.OPEN_BOOK, OPEN_BOOK);
+                insertPacketID(PacketTypeClasses.Play.Server.OPEN_WINDOW, OPEN_WINDOW);
+                insertPacketID(PacketTypeClasses.Play.Server.OPEN_SIGN_EDITOR, OPEN_SIGN_EDITOR);
+                insertPacketID(PacketTypeClasses.Play.Server.AUTO_RECIPE, AUTO_RECIPE);
+                insertPacketID(PacketTypeClasses.Play.Server.ABILITIES, ABILITIES);
+                insertPacketID(PacketTypeClasses.Play.Server.COMBAT_EVENT, COMBAT_EVENT);
+                insertPacketID(PacketTypeClasses.Play.Server.PLAYER_INFO, PLAYER_INFO);
+                insertPacketID(PacketTypeClasses.Play.Server.LOOK_AT, LOOK_AT);
+                insertPacketID(PacketTypeClasses.Play.Server.POSITION, POSITION);
+                insertPacketID(PacketTypeClasses.Play.Server.RECIPES, RECIPES);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_DESTROY, ENTITY_DESTROY);
+                insertPacketID(PacketTypeClasses.Play.Server.REMOVE_ENTITY_EFFECT, REMOVE_ENTITY_EFFECT);
+                insertPacketID(PacketTypeClasses.Play.Server.RESOURCE_PACK_SEND, RESOURCE_PACK_SEND);
+                insertPacketID(PacketTypeClasses.Play.Server.RESPAWN, RESPAWN);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_HEAD_ROTATION, ENTITY_HEAD_ROTATION);
+                insertPacketID(PacketTypeClasses.Play.Server.SELECT_ADVANCEMENT_TAB, SELECT_ADVANCEMENT_TAB);
+                insertPacketID(PacketTypeClasses.Play.Server.WORLD_BORDER, WORLD_BORDER);
+                insertPacketID(PacketTypeClasses.Play.Server.CAMERA, CAMERA);
+                insertPacketID(PacketTypeClasses.Play.Server.HELD_ITEM_SLOT, HELD_ITEM_SLOT);
+                insertPacketID(PacketTypeClasses.Play.Server.VIEW_CENTRE, VIEW_CENTRE);
+                insertPacketID(PacketTypeClasses.Play.Server.VIEW_DISTANCE, VIEW_DISTANCE);
+                insertPacketID(PacketTypeClasses.Play.Server.SCOREBOARD_DISPLAY_OBJECTIVE, SCOREBOARD_DISPLAY_OBJECTIVE);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_METADATA, ENTITY_METADATA);
+                insertPacketID(PacketTypeClasses.Play.Server.ATTACH_ENTITY, ATTACH_ENTITY);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_VELOCITY, ENTITY_VELOCITY);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_EQUIPMENT, ENTITY_EQUIPMENT);
+                insertPacketID(PacketTypeClasses.Play.Server.EXPERIENCE, EXPERIENCE);
+                insertPacketID(PacketTypeClasses.Play.Server.UPDATE_HEALTH, UPDATE_HEALTH);
+                insertPacketID(PacketTypeClasses.Play.Server.SCOREBOARD_OBJECTIVE, SCOREBOARD_OBJECTIVE);
+                insertPacketID(PacketTypeClasses.Play.Server.MOUNT, MOUNT);
+                insertPacketID(PacketTypeClasses.Play.Server.SCOREBOARD_TEAM, SCOREBOARD_TEAM);
+                insertPacketID(PacketTypeClasses.Play.Server.SCOREBOARD_SCORE, SCOREBOARD_SCORE);
+                insertPacketID(PacketTypeClasses.Play.Server.SPAWN_POSITION, SPAWN_POSITION);
+                insertPacketID(PacketTypeClasses.Play.Server.UPDATE_TIME, UPDATE_TIME);
+                insertPacketID(PacketTypeClasses.Play.Server.TITLE, TITLE);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_SOUND, ENTITY_SOUND);
+                insertPacketID(PacketTypeClasses.Play.Server.NAMED_SOUND_EFFECT, NAMED_SOUND_EFFECT);
+                insertPacketID(PacketTypeClasses.Play.Server.STOP_SOUND, STOP_SOUND);
+                insertPacketID(PacketTypeClasses.Play.Server.PLAYER_LIST_HEADER_FOOTER, PLAYER_LIST_HEADER_FOOTER);
+                insertPacketID(PacketTypeClasses.Play.Server.NBT_QUERY, NBT_QUERY);
+                insertPacketID(PacketTypeClasses.Play.Server.COLLECT, COLLECT);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_TELEPORT, ENTITY_TELEPORT);
+                insertPacketID(PacketTypeClasses.Play.Server.ADVANCEMENTS, ADVANCEMENTS);
+                insertPacketID(PacketTypeClasses.Play.Server.UPDATE_ATTRIBUTES, UPDATE_ATTRIBUTES);
+                insertPacketID(PacketTypeClasses.Play.Server.ENTITY_EFFECT, ENTITY_EFFECT);
+                insertPacketID(PacketTypeClasses.Play.Server.RECIPE_UPDATE, RECIPE_UPDATE);
+                insertPacketID(PacketTypeClasses.Play.Server.TAGS, TAGS);
+                insertPacketID(PacketTypeClasses.Play.Server.MAP_CHUNK_BULK, MAP_CHUNK_BULK);
+                insertPacketID(PacketTypeClasses.Play.Server.NAMED_ENTITY_SPAWN, NAMED_ENTITY_SPAWN);
             }
 
             /**

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

@@ -1,43 +1,41 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packettype;
 
+import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
 
 public class PacketTypeClasses {
     public static void load() {
-        //PLAY
-        PacketTypeClasses.Play.Client.load();
-        PacketTypeClasses.Play.Server.load();
-        //LOGIN
-        PacketTypeClasses.Login.Client.load();
-        PacketTypeClasses.Login.Server.load();
         //STATUS
         PacketTypeClasses.Status.Client.load();
         PacketTypeClasses.Status.Server.load();
+        //HANDSHAKING
+        PacketTypeClasses.Handshaking.Client.load();
+        //LOGIN
+        PacketTypeClasses.Login.Client.load();
+        PacketTypeClasses.Login.Server.load();
+        //PLAY
+        PacketTypeClasses.Play.Client.load();
+        PacketTypeClasses.Play.Server.load();
     }
 
     public static class Status {
@@ -47,7 +45,6 @@ public class PacketTypeClasses {
             public static void load() {
                 Client.START = NMSUtils.getNMSClassWithoutException("PacketStatusInStart");
                 Client.PING = NMSUtils.getNMSClassWithoutException("PacketStatusInPing");
-                PacketType.Status.Client.init();
             }
         }
 
@@ -57,22 +54,31 @@ public class PacketTypeClasses {
             public static void load() {
                 Server.PONG = NMSUtils.getNMSClassWithoutException("PacketStatusOutPong");
                 Server.SERVER_INFO = NMSUtils.getNMSClassWithoutException("PacketStatusOutServerInfo");
-                PacketType.Status.Server.init();
+            }
+        }
+    }
+
+    public static class Handshaking {
+        public static class Client {
+            public static Class<?> SET_PROTOCOL;
+
+            public static void load() {
+                Handshaking.Client.SET_PROTOCOL = NMSUtils.getNMSClassWithoutException("PacketHandshakingInSetProtocol");
             }
         }
     }
 
     public static class Login {
         public static class Client {
-            public static Class<?> HANDSHAKE, CUSTOM_PAYLOAD, START, ENCRYPTION_BEGIN;
+            public static Class<?> CUSTOM_PAYLOAD, START, ENCRYPTION_BEGIN;
 
             public static void load() {
-                Client.HANDSHAKE = NMSUtils.getNMSClassWithoutException("PacketHandshakingInSetProtocol");
-                //In and Out custom payload login packets have been here since AROUND 1.13.2.
-                Client.CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginInCustomPayload");
+                //In and Out custom payload login packets have been here since 1.13
+                if (PacketEvents.get().getServerUtils().getVersion().isNewerThanOrEquals(ServerVersion.v_1_13)) {
+                    Client.CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginInCustomPayload");
+                }
                 Client.START = NMSUtils.getNMSClassWithoutException("PacketLoginInStart");
                 Client.ENCRYPTION_BEGIN = NMSUtils.getNMSClassWithoutException("PacketLoginInEncryptionBegin");
-                PacketType.Login.Client.init();
             }
         }
 
@@ -80,12 +86,16 @@ public class PacketTypeClasses {
             public static Class<?> CUSTOM_PAYLOAD, DISCONNECT, ENCRYPTION_BEGIN, SUCCESS, SET_COMPRESSION;
 
             public static void load() {
-                Server.CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginOutCustomPayload");
+                //In and Out custom payload login packets have been here since 1.13
+                if (PacketEvents.get().getServerUtils().getVersion().isNewerThanOrEquals(ServerVersion.v_1_13)) {
+                    Server.CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginOutCustomPayload");
+                }
                 Server.DISCONNECT = NMSUtils.getNMSClassWithoutException("PacketLoginOutDisconnect");
                 Server.ENCRYPTION_BEGIN = NMSUtils.getNMSClassWithoutException("PacketLoginOutEncryptionBegin");
                 Server.SUCCESS = NMSUtils.getNMSClassWithoutException("PacketLoginOutSuccess");
-                Server.SET_COMPRESSION = NMSUtils.getNMSClassWithoutException("PacketLoginOutSetCompression");
-                PacketType.Login.Server.init();
+                if (PacketEvents.get().getServerUtils().getVersion().isNewerThan(ServerVersion.v_1_7_10)) {
+                    Server.SET_COMPRESSION = NMSUtils.getNMSClassWithoutException("PacketLoginOutSetCompression");
+                }
             }
         }
     }
@@ -114,7 +124,7 @@ public class PacketTypeClasses {
                     POSITION = NMSUtils.getNMSClass(PREFIX + "Position");
                     POSITION_LOOK = NMSUtils.getNMSClass(PREFIX + "PositionLook");
                     LOOK = NMSUtils.getNMSClass(PREFIX + "Look");
-                } catch (ClassNotFoundException e) {
+                } catch (Exception e) {
                     POSITION = SubclassUtil.getSubClass(FLYING, PREFIX + "Position");
                     POSITION_LOOK = SubclassUtil.getSubClass(FLYING, PREFIX + "PositionLook");
                     LOOK = SubclassUtil.getSubClass(FLYING, PREFIX + "Look");
@@ -166,17 +176,16 @@ public class PacketTypeClasses {
                     SET_JIGSAW = NMSUtils.getNMSClassWithoutException(PREFIX + "SetJigsaw");
                     STRUCT = NMSUtils.getNMSClassWithoutException(PREFIX + "Struct");
                     SPECTATE = NMSUtils.getNMSClassWithoutException(PREFIX + "Spectate");
-                } catch (ClassNotFoundException e) {
+                } catch (Exception e) {
                     e.printStackTrace();
                 }
 
                 try {
                     BLOCK_PLACE = NMSUtils.getNMSClass(PREFIX + "BlockPlace");
                     USE_ITEM = NMSUtils.getNMSClass(PREFIX + "UseItem");
-                } catch (ClassNotFoundException ignored) {
+                } catch (Exception ignored) {
                 }
 
-                PacketType.Play.Client.init();
             }
         }
 
@@ -311,7 +320,6 @@ public class PacketTypeClasses {
                 TAGS = NMSUtils.getNMSClassWithoutException(s + "Tags");
                 MAP_CHUNK_BULK = NMSUtils.getNMSClassWithoutException(s + "MapChunkBulk");
                 NAMED_ENTITY_SPAWN = NMSUtils.getNMSClassWithoutException(s + "NamedEntitySpawn");
-                PacketType.Play.Server.init();
             }
         }
     }

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers;

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

@@ -1,32 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.packetwrappers;
-
-/**
- * This interface indicates that a packet wrapper supports being sent to a client.
- */
-public interface SendableWrapper {
-    Object asNMSPacket();
-}

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

@@ -1,40 +1,53 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers;
 
+import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.exceptions.WrapperFieldNotFoundException;
+import io.github.retrooper.packetevents.exceptions.WrapperUnsupportedUsageException;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.api.WrapperPacketReader;
+import io.github.retrooper.packetevents.packetwrappers.api.WrapperPacketWriter;
+import io.github.retrooper.packetevents.utils.enums.EnumUtil;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.player.GameMode;
 import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import io.github.retrooper.packetevents.utils.world.Difficulty;
+import io.github.retrooper.packetevents.utils.world.Dimension;
+import org.bukkit.inventory.ItemStack;
 
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
 import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
 import java.util.ArrayList;
-import java.util.HashMap;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Level;
 
 public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
 
@@ -42,7 +55,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
     private static final Map<Class<?>, Map<Class<?>, Field[]>> FIELD_CACHE = new ConcurrentHashMap<>();
     private static final Field[] EMPTY_FIELD_ARRAY = new Field[0];
     public static ServerVersion version;
-    protected NMSPacket packet;
+    protected final NMSPacket packet;
     private final Class<?> packetClass;
 
     public WrappedPacket() {
@@ -67,15 +80,97 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
     }
 
     private void load0() {
+        if (!isSupported()) {
+            throw new WrapperUnsupportedUsageException(getClass());
+        }
         final Class<? extends WrappedPacket> clazz = getClass();
         if (!LOADED_WRAPPERS.containsKey(clazz)) {
-            load();
+            try {
+                load();
+            } catch (Exception ex) {
+                String wrapperName = ClassUtil.getClassSimpleName(getClass());
+                PacketEvents.get().getPlugin().getLogger()
+                        .log(Level.SEVERE, "PacketEvents found an exception while loading the " + wrapperName + " packet wrapper. Please report this bug! Tell us about your server version, spigot and code(of you using the wrapper)", ex);
+                LOADED_WRAPPERS.put(clazz, false);
+            }
             LOADED_WRAPPERS.put(clazz, true);
         }
     }
 
     protected void load() {
+    }
 
+    protected boolean hasLoaded() {
+        return LOADED_WRAPPERS.getOrDefault(getClass(), false);
+    }
+
+    protected void throwUnsupportedOperation(Enum<?> enumConst) throws UnsupportedOperationException {
+        Class<?> enumConstClass = enumConst.getClass();
+        Field field = null;
+        try {
+            field = enumConstClass.getField(enumConst.name());
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+        if (field.isAnnotationPresent(SupportedVersions.class)) {
+            SupportedVersions supportedVersions = field.getAnnotation(SupportedVersions.class);
+            List<ServerVersion> versionList = parseSupportedVersionsAnnotation(supportedVersions);
+            String supportedVersionsMsg = Arrays.toString(versionList.toArray(new ServerVersion[0]));
+            throw new UnsupportedOperationException("PacketEvents failed to use the " + enumConst.name() + " enum constant in the " + enumConstClass.getSimpleName() + " enum. This enum constant is not supported on your server version. (" + PacketEvents.get().getServerUtils().getVersion() + ")\n This enum constant is only supported on these server versions: " + supportedVersionsMsg);
+        } else {
+            throw new UnsupportedOperationException("PacketEvents failed to use the " + enumConst.name() + " enum constant in the " + enumConstClass.getSimpleName() + " enum. This enum constant is not supported on your server version. (" + PacketEvents.get().getServerUtils().getVersion() + ")\n Failed to find out what server versions this enum constant is supported on.");
+        }
+    }
+
+    protected void throwUnsupportedOperation() throws UnsupportedOperationException {
+        final String currentMethodName = "throwUnsupportedOperation";
+        StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace();
+        int stackTraceElementIndex = 2;
+        for (int i = 0; i < stackTraceElements.length; i++) {
+            StackTraceElement element = stackTraceElements[i];
+            if (element.getMethodName().equals(currentMethodName)) {
+                stackTraceElementIndex = i + 1; //It is the next method
+                break;
+            }
+        }
+        StackTraceElement stackTraceElement = stackTraceElements[stackTraceElementIndex];
+        String methodName = stackTraceElement.getMethodName();
+        List<Method> possibleMethods = Reflection.getMethods(getClass(), methodName, (Class<?>) null);
+        Method method = null;
+        for (Method m : possibleMethods) {
+            if (m.isAnnotationPresent(SupportedVersions.class)) {
+                method = m;
+                break;
+            }
+        }
+        if (method == null) {
+            throw new UnsupportedOperationException("PacketEvents failed to access your requested field. This field is not supported on your server version. Failed to lookup the server versions this field supports...");
+        } else {
+            SupportedVersions supportedVersions = method.getAnnotation(SupportedVersions.class);
+            List<ServerVersion> versionList = parseSupportedVersionsAnnotation(supportedVersions);
+
+            String supportedVersionsMsg = Arrays.toString(versionList.toArray(new ServerVersion[0]));
+            throw new UnsupportedOperationException("PacketEvents failed to access your requested field. This field is not supported on your server version. (" + PacketEvents.get().getServerUtils().getVersion() + ")\n This field is only supported on these server versions: " + supportedVersionsMsg);
+        }
+    }
+
+    private List<ServerVersion> parseSupportedVersionsAnnotation(SupportedVersions supportedVersions) {
+        List<ServerVersion> versionList = new ArrayList<>();
+        for (int i = 0; i < supportedVersions.ranges().length; i += 2) {
+            ServerVersion first = supportedVersions.ranges()[i];
+            ServerVersion last = supportedVersions.ranges()[i + 1];
+            if (first == last) {
+                versionList.add(first);
+                continue;
+            } else if (first == ServerVersion.ERROR) {
+                first = ServerVersion.getOldest();
+            } else if (last == ServerVersion.ERROR) {
+                last = ServerVersion.getLatest();
+            }
+            versionList.addAll(Arrays.asList(ServerVersion.values()).subList(first.ordinal(), last.ordinal() + 1));
+        }
+        versionList.remove(ServerVersion.ERROR);
+        return versionList;
     }
 
 
@@ -151,7 +246,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
 
     @Override
     public String[] readStringArray(int index) {
-        return read(index, String[].class); // Can we be sure that returning the original array is okay?
+        return read(index, String[].class); // JavaImpact: Can we be sure that returning the original array is okay? retrooper: Yes
     }
 
     @Override
@@ -159,6 +254,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         return read(index, String.class);
     }
 
+    @Override
     public Object readAnyObject(int index) {
         try {
             Field f = packetClass.getDeclaredFields()[index];
@@ -176,20 +272,27 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         return null;
     }
 
-    public Object readObject(int index, Class<?> type) {
+    @Override
+    public <T> T readObject(int index, Class<? extends T> type) {
+        return read(index, type);
+    }
+
+    @Override
+    public Enum<?> readEnumConstant(int index, Class<? extends Enum<?>> type) {
         return read(index, type);
     }
 
     @SuppressWarnings("unchecked")
     public <T> T read(int index, Class<? extends T> type) {
-        Field field = getField(type, index);
         try {
+            Field field = getField(type, index);
             return (T) field.get(packet.getRawNMSPacket());
-        } catch (IllegalAccessException | NullPointerException e) {
+        } catch (IllegalAccessException | NullPointerException | ArrayIndexOutOfBoundsException e) {
             throw new WrapperFieldNotFoundException(packetClass, type, index);
         }
     }
 
+
     @Override
     public void writeBoolean(int index, boolean value) {
         write(boolean.class, index, value);
@@ -235,8 +338,64 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         write(value.getClass(), index, value);
     }
 
+    @Override
+    public void writeBooleanArray(int index, boolean[] array) {
+        write(boolean[].class, index, array);
+    }
+
+    @Override
+    public void writeByteArray(int index, byte[] value) {
+        write(byte[].class, index, value);
+    }
+
+    @Override
+    public void writeShortArray(int index, short[] value) {
+        write(short[].class, index, value);
+    }
+
+    @Override
+    public void writeIntArray(int index, int[] value) {
+        write(int[].class, index, value);
+    }
+
+    @Override
+    public void writeLongArray(int index, long[] value) {
+        write(long[].class, index, value);
+    }
+
+    @Override
+    public void writeFloatArray(int index, float[] value) {
+        write(float[].class, index, value);
+    }
+
+    @Override
+    public void writeDoubleArray(int index, double[] value) {
+        write(double[].class, index, value);
+    }
+
+    @Override
+    public void writeStringArray(int index, String[] value) {
+        write(String[].class, index, value);
+    }
+
+    @Override
+    public void writeAnyObject(int index, Object value) {
+        try {
+            Field f = packetClass.getDeclaredFields()[index];
+            f.set(packet.getRawNMSPacket(), value);
+        } catch (Exception e) {
+            throw new WrapperFieldNotFoundException("PacketEvents failed to find any field indexed " + index + " in the " + ClassUtil.getClassSimpleName(packetClass) + " class!");
+        }
+    }
+
+    @Override
+    public void writeEnumConstant(int index, Enum<?> enumConstant) {
+        write(enumConstant.getClass(), index, enumConstant);
+    }
+
     public void write(Class<?> type, int index, Object value) throws WrapperFieldNotFoundException {
         Field field = getField(type, index);
+        //Reflection.getFieldWithoutFinalModifier(field);
         if (field == null) {
             throw new WrapperFieldNotFoundException(packetClass, type, index);
         }
@@ -247,10 +406,103 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         }
     }
 
+    public Vector3i readBlockPosition(int index) {
+        Object blockPosObj = readObject(index, NMSUtils.blockPosClass);
+        try {
+            int x = (int) NMSUtils.getBlockPosX.invoke(blockPosObj);
+            int y = (int) NMSUtils.getBlockPosY.invoke(blockPosObj);
+            int z = (int) NMSUtils.getBlockPosZ.invoke(blockPosObj);
+            return new Vector3i(x, y, z);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public void writeBlockPosition(int index, Vector3i blockPosition) {
+        Object blockPosObj = NMSUtils.generateNMSBlockPos(blockPosition);
+        write(NMSUtils.blockPosClass, index, blockPosObj);
+    }
+
+    public ItemStack readItemStack(int index) {
+        Object nmsItemStack = readObject(index, NMSUtils.nmsItemStackClass);
+        return NMSUtils.toBukkitItemStack(nmsItemStack);
+    }
+
+    public void writeItemStack(int index, ItemStack stack) {
+        Object nmsItemStack = NMSUtils.toNMSItemStack(stack);
+        write(NMSUtils.nmsItemStackClass, index, nmsItemStack);
+    }
+
+    public GameMode readGameMode(int index) {
+        Enum<?> enumConst = readEnumConstant(index, NMSUtils.enumGameModeClass);
+        return GameMode.valueOf(enumConst.name());
+    }
+
+    public void writeGameMode(int index, GameMode gameMode) {
+        Enum<?> enumConst = EnumUtil.valueOf(NMSUtils.enumGameModeClass, gameMode.name());
+        writeEnumConstant(index, enumConst);
+    }
+
+    public Dimension readDimension(int index, int dimensionIDLegacyIndex) {
+        int dimensionID;
+        if (version.isOlderThan(ServerVersion.v_1_13_2)) {
+            dimensionID = readInt(dimensionIDLegacyIndex);
+        } else {
+            Object dimensionManagerObject = readObject(index, NMSUtils.dimensionManagerClass);
+            WrappedPacket dimensionManagerWrapper = new WrappedPacket(new NMSPacket(dimensionManagerObject));
+            dimensionID = dimensionManagerWrapper.readInt(0) - 1;
+        }
+        return Dimension.getById(dimensionID);
+    }
+
+    public void writeDimension(int index, int dimensionIDLegacyIndex, Dimension dimension) {
+        if (version.isOlderThan(ServerVersion.v_1_13_2)) {
+            writeInt(dimensionIDLegacyIndex, dimension.getId());
+        } else {
+            Object dimensionManagerObject = readObject(index, NMSUtils.dimensionManagerClass);
+            WrappedPacket dimensionManagerWrapper = new WrappedPacket(new NMSPacket(dimensionManagerObject));
+            dimensionManagerWrapper.writeInt(0, dimension.getId() + 1);
+        }
+    }
+
+
+    public Difficulty readDifficulty(int index) {
+        Enum<?> enumConstant = readEnumConstant(index, NMSUtils.enumDifficultyClass);
+        return Difficulty.values()[enumConstant.ordinal()];
+    }
+
+    public void writeDifficulty(int index, Difficulty difficulty) {
+        Enum<?> enumConstant = EnumUtil.valueByIndex(NMSUtils.enumDifficultyClass, difficulty.ordinal());
+        writeEnumConstant(index, enumConstant);
+    }
+
+    public String readIChatBaseComponent(int index) {
+        Object iChatBaseComponent = readObject(index, NMSUtils.iChatBaseComponentClass);
+        return NMSUtils.readIChatBaseComponent(iChatBaseComponent);
+    }
+
+    public void writeIChatBaseComponent(int index, String content) {
+        Object iChatBaseComponent = NMSUtils.generateIChatBaseComponent(content);
+        write(NMSUtils.iChatBaseComponentClass, index, iChatBaseComponent);
+    }
+
+    public List<Object> readList(int index) {
+        return read(index, List.class);
+    }
+
+    public void writeList(int index, List<Object> list) {
+        write(List.class, index, list);
+    }
+
     private Field getField(Class<?> type, int index) {
-        Map<Class<?>, Field[]> cached = FIELD_CACHE.computeIfAbsent(packetClass, k -> new HashMap<>());
+        Map<Class<?>, Field[]> cached = FIELD_CACHE.computeIfAbsent(packetClass, k -> new ConcurrentHashMap<>());
         Field[] fields = cached.computeIfAbsent(type, typeClass -> getFields(typeClass, packetClass.getDeclaredFields()));
-        return fields[index];
+        if (fields.length >= index + 1) {
+            return fields[index];
+        } else {
+            throw new WrapperFieldNotFoundException(packetClass, type, index);
+        }
     }
 
     private Field[] getFields(Class<?> type, Field[] fields) {
@@ -266,8 +518,29 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         return ret.toArray(EMPTY_FIELD_ARRAY);
     }
 
-    // Does the server version support reading/sending this packet?
+
+    /**
+     * Does the local server version support reading at-least one field with this packet wrapper?
+     * If it does, we can label this wrapper to be supported on the local server version.
+     * One example where it would not be supported would be if the packet the wrapper is wrapping doesn't even exist on the local server version.
+     *
+     * @return Is the wrapper supported on the local server version?
+     */
     public boolean isSupported() {
         return true;
     }
+
+    /**
+     * If a method in a wrapper is annotated with this, it means it isn't supported on all server versions.
+     * It not being supported by all server versions can lead to exceptions. Make sure you always decompile a wrapper getter before using it.
+     * This annotation will specify what versions are supported.
+     *
+     * @author retrooper
+     * @since 1.8
+     */
+    @Target({ElementType.METHOD, ElementType.FIELD, ElementType.CONSTRUCTOR})
+    @Retention(RetentionPolicy.RUNTIME)
+    public @interface SupportedVersions {
+        ServerVersion[] ranges() default {};
+    }
 }

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

@@ -1,64 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.packetwrappers;
-
-public interface WrapperPacketReader {
-
-    boolean readBoolean(int index);
-
-    byte readByte(int index);
-
-    short readShort(int index);
-
-    int readInt(int index);
-
-    long readLong(int index);
-
-    float readFloat(int index);
-
-    double readDouble(int index);
-
-    boolean[] readBooleanArray(int index);
-
-    byte[] readByteArray(int index);
-
-    short[] readShortArray(int index);
-
-    int[] readIntArray(int index);
-
-    long[] readLongArray(int index);
-
-    float[] readFloatArray(int index);
-
-    double[] readDoubleArray(int index);
-
-    String[] readStringArray(int index);
-
-    String readString(int index);
-
-    Object readObject(int index, Class<?> type);
-
-    Object readAnyObject(int index);
-}

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

@@ -1,47 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.packetwrappers;
-
-public interface WrapperPacketWriter {
-
-    // TODO write for the arrays
-    void writeBoolean(int index, boolean value);
-
-    void writeByte(int index, byte value);
-
-    void writeShort(int index, short value);
-
-    void writeInt(int index, int value);
-
-    void writeLong(int index, long value);
-
-    void writeFloat(int index, float value);
-
-    void writeDouble(int index, double value);
-
-    void writeString(int index, String value);
-
-    void writeObject(int index, Object object);
-}

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

@@ -0,0 +1,29 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.api;
+
+/**
+ * Packet-Wrappers that can be sent to clients.
+ *
+ * @author retrooper
+ * //TODO since javadoc annotation
+ */
+public interface SendableWrapper {
+    Object asNMSPacket() throws Exception;
+}

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

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.api;
+
+public interface WrapperPacketReader {
+
+    boolean readBoolean(int index);
+
+    byte readByte(int index);
+
+    short readShort(int index);
+
+    int readInt(int index);
+
+    long readLong(int index);
+
+    float readFloat(int index);
+
+    double readDouble(int index);
+
+    boolean[] readBooleanArray(int index);
+
+    byte[] readByteArray(int index);
+
+    short[] readShortArray(int index);
+
+    int[] readIntArray(int index);
+
+    long[] readLongArray(int index);
+
+    float[] readFloatArray(int index);
+
+    double[] readDoubleArray(int index);
+
+    String[] readStringArray(int index);
+
+    String readString(int index);
+
+    <T> T readObject(int index, Class<? extends T> type);
+
+    Enum<?> readEnumConstant(int index, Class<? extends Enum<?>> type);
+
+    Object readAnyObject(int index);
+}

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

@@ -0,0 +1,60 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.api;
+
+public interface WrapperPacketWriter {
+    void writeBoolean(int index, boolean value);
+
+    void writeByte(int index, byte value);
+
+    void writeShort(int index, short value);
+
+    void writeInt(int index, int value);
+
+    void writeLong(int index, long value);
+
+    void writeFloat(int index, float value);
+
+    void writeDouble(int index, double value);
+
+    void writeString(int index, String value);
+
+    //ARRAYS
+    void writeBooleanArray(int index, boolean[] array);
+
+    void writeByteArray(int index, byte[] value);
+
+    void writeShortArray(int index, short[] value);
+
+    void writeIntArray(int index, int[] value);
+
+    void writeLongArray(int index, long[] value);
+
+    void writeFloatArray(int index, float[] value);
+
+    void writeDoubleArray(int index, double[] value);
+
+    void writeStringArray(int index, String[] value);
+
+    void writeObject(int index, Object object);
+
+    void writeAnyObject(int index, Object value);
+
+    void writeEnumConstant(int index, Enum<?> enumConstant);
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/api/helper/WrappedPacketEntityAbstraction.java

@@ -0,0 +1,86 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.api.helper;
+
+import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import org.bukkit.World;
+import org.bukkit.entity.Entity;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public abstract class WrappedPacketEntityAbstraction extends WrappedPacket {
+    private final int entityIDFieldIndex;
+    protected Entity entity;
+    protected int entityID = -1;
+
+    public WrappedPacketEntityAbstraction(NMSPacket packet, int entityIDFieldIndex) {
+        super(packet);
+        this.entityIDFieldIndex = entityIDFieldIndex;
+    }
+
+    public WrappedPacketEntityAbstraction(NMSPacket packet) {
+        super(packet);
+        this.entityIDFieldIndex = 0;
+    }
+
+    public WrappedPacketEntityAbstraction(int entityIDFieldIndex) {
+        super();
+        this.entityIDFieldIndex = entityIDFieldIndex;
+    }
+
+    public WrappedPacketEntityAbstraction() {
+        super();
+        this.entityIDFieldIndex = 0;
+    }
+
+    public int getEntityId() {
+        if (entityID != -1 || packet == null) {
+            return entityID;
+        }
+        return entityID = readInt(entityIDFieldIndex);
+    }
+
+    public void setEntityId(int entityID) {
+        if (packet != null) {
+            writeInt(entityIDFieldIndex, this.entityID = entityID);
+        } else {
+            this.entityID = entityID;
+        }
+        this.entity = null;
+    }
+
+    @Nullable
+    public Entity getEntity(@Nullable World world) {
+        if (entity != null) {
+            return entity;
+        }
+        return entity = NMSUtils.getEntityById(world, getEntityId());
+    }
+
+    public Entity getEntity() {
+        return getEntity(null);
+    }
+
+    public void setEntity(@NotNull Entity entity) {
+        setEntityId(entity.getEntityId());
+        this.entity = entity;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/handshaking/setprotocol/WrappedPacketHandshakingInSetProtocol.java

@@ -0,0 +1,53 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.handshaking.setprotocol;
+
+import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public class WrappedPacketHandshakingInSetProtocol extends WrappedPacket {
+
+    public WrappedPacketHandshakingInSetProtocol(NMSPacket packet) {
+        super(packet);
+    }
+
+    public int getProtocolVersion() {
+        return readInt(0);
+    }
+
+    public void setProtocolVersion(int protocolVersion) {
+        writeInt(0, protocolVersion);
+    }
+
+    public int getPort() {
+        return readInt(1);
+    }
+
+    public void setPort(int port) {
+        writeInt(1, port);
+    }
+
+    public String getHostName() {
+        return readString(0);
+    }
+
+    public void setHostName(String hostName) {
+        writeString(0, hostName);
+    }
+}

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.in.custompayload;
@@ -30,35 +24,39 @@ import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
 
-/**
- * This packet exists since 1.13
- */
 public class WrappedPacketLoginInCustomPayload extends WrappedPacket {
-    private static Class<?> byteBufClass;
-    private static Class<?> packetDataSerializerClass;
-
     public WrappedPacketLoginInCustomPayload(NMSPacket packet) {
         super(packet);
     }
 
-    @Override
-    protected void load() {
-        packetDataSerializerClass = NMSUtils.getNMSClassWithoutException("PacketDataSerializer");
-        try {
-            byteBufClass = NMSUtils.getNettyClass("buffer.ByteBuf");
-        } catch (ClassNotFoundException ignored) {
-        }
-    }
-
     public int getMessageId() {
         return readInt(0);
     }
 
+    public void setMessageId(int id) {
+        writeInt(0, id);
+    }
+
     public byte[] getData() {
-        Object dataSerializer = readObject(0, packetDataSerializerClass);
+        return PacketEvents.get().getByteBufUtil().getBytes(getBuffer());
+    }
+
+    public void setData(byte[] data) {
+        PacketEvents.get().getByteBufUtil().setBytes(getBuffer(), data);
+    }
+
+    private Object getBuffer() {
+        Object dataSerializer = readObject(0, NMSUtils.packetDataSerializerClass);
         WrappedPacket byteBufWrapper = new WrappedPacket(new NMSPacket(dataSerializer));
-        Object byteBuf = byteBufWrapper.readObject(0, byteBufClass);
-        return PacketEvents.get().getByteBufUtil().getBytes(byteBuf);
+        return byteBufWrapper.readObject(0, NMSUtils.byteBufClass);
+    }
+
+    public void retain() {
+        PacketEvents.get().getByteBufUtil().retain(getBuffer());
+    }
+
+    public void release() {
+        PacketEvents.get().getByteBufUtil().release(getBuffer());
     }
 
     @Override

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/in/encryptionbegin/WrappedPacketLoginInEncryptionBegin.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.in.encryptionbegin;
@@ -37,10 +31,18 @@ public class WrappedPacketLoginInEncryptionBegin extends WrappedPacket {
         return readByteArray(0);
     }
 
+    public void setPublicKey(byte[] key) {
+        writeByteArray(0, key);
+    }
+
     public byte[] getVerifyToken() {
         return readByteArray(1);
     }
 
+    public void setVerifyToken(byte[] token) {
+        writeByteArray(1, token);
+    }
+
     @Override
     public boolean isSupported() {
         return PacketTypeClasses.Login.Client.ENCRYPTION_BEGIN != null;

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/in/handshake/WrappedPacketLoginInHandshake.java

@@ -1,52 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * 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 above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.packetwrappers.login.in.handshake;
-
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
-import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
-import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-
-public class WrappedPacketLoginInHandshake extends WrappedPacket {
-    public WrappedPacketLoginInHandshake(NMSPacket packet) {
-        super(packet);
-    }
-
-    public int getProtocolVersion() {
-        return readInt(0);
-    }
-
-    public String getHostName() {
-        return readString(0);
-    }
-
-    public int getPort() {
-        return readInt(1);
-    }
-
-    @Override
-    public boolean isSupported() {
-        return PacketTypeClasses.Login.Client.HANDSHAKE != null;
-    }
-}

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/in/start/WrappedPacketLoginInStart.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.in.start;
@@ -40,6 +34,11 @@ public class WrappedPacketLoginInStart extends WrappedPacket {
         return GameProfileUtil.getWrappedGameProfile(readObject(0, NMSUtils.gameProfileClass));
     }
 
+    public void setGameProfile(WrappedGameProfile wrappedGameProfile) {
+        Object gameProfile = GameProfileUtil.getGameProfile(wrappedGameProfile.getId(), wrappedGameProfile.getName());
+        write(NMSUtils.gameProfileClass, 0, gameProfile);
+    }
+
     @Override
     public boolean isSupported() {
         return PacketTypeClasses.Login.Client.START != null;

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/out/custompayload/WrappedPacketLoginOutCustomPayload.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.out.custompayload;
@@ -27,8 +21,8 @@ package io.github.retrooper.packetevents.packetwrappers.login.out.custompayload;
 import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
-import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.packetwrappers.api.SendableWrapper;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 
 import java.lang.reflect.Constructor;
@@ -37,8 +31,6 @@ import java.lang.reflect.InvocationTargetException;
 public class WrappedPacketLoginOutCustomPayload extends WrappedPacket implements SendableWrapper {
     private static Constructor<?> constructor;
     private static Constructor<?> packetDataSerializerConstructor;
-    private static Class<?> byteBufClass;
-    private static Class<?> packetDataSerializerClass;
     private int messageID;
     private String channelName;
     private byte[] data;
@@ -51,16 +43,9 @@ public class WrappedPacketLoginOutCustomPayload extends WrappedPacket implements
     protected void load() {
         Class<?> packetClass = PacketTypeClasses.Login.Server.CUSTOM_PAYLOAD;
         if (packetClass != null) {
-            packetDataSerializerClass = NMSUtils.getNMSClassWithoutException("PacketDataSerializer");
             try {
-                byteBufClass = NMSUtils.getNettyClass("buffer.ByteBuf");
-            } catch (ClassNotFoundException ex) {
-                ex.printStackTrace();
-            }
-
-            try {
-                if (packetDataSerializerClass != null) {
-                    packetDataSerializerConstructor = packetDataSerializerClass.getConstructor(byteBufClass);
+                if (NMSUtils.packetDataSerializerClass != null) {
+                    packetDataSerializerConstructor = NMSUtils.packetDataSerializerClass.getConstructor(NMSUtils.byteBufClass);
                 }
             } catch (NoSuchMethodException e) {
                 e.printStackTrace();
@@ -81,27 +66,54 @@ public class WrappedPacketLoginOutCustomPayload extends WrappedPacket implements
         return messageID;
     }
 
+    public void setMessageId(int messageID) {
+        if (packet != null) {
+            writeInt(0, messageID);
+        } else {
+            this.messageID = messageID;
+        }
+    }
+
     public String getChannelName() {
         if (packet != null) {
             Object minecraftKey = readObject(0, NMSUtils.minecraftKeyClass);
-           return NMSUtils.getStringFromMinecraftKey(minecraftKey);
+            return NMSUtils.getStringFromMinecraftKey(minecraftKey);
         }
         return channelName;
     }
 
+    public void setChannelName(String channelName) {
+        if (packet != null) {
+            Object minecraftKey = NMSUtils.generateMinecraftKey(channelName);
+            writeObject(0, minecraftKey);
+        } else {
+            this.channelName = channelName;
+        }
+    }
+
     public byte[] getData() {
         if (packet != null) {
-            Object dataSerializer = readObject(0, packetDataSerializerClass);
+            Object dataSerializer = readObject(0, NMSUtils.packetDataSerializerClass);
             WrappedPacket byteBufWrapper = new WrappedPacket(new NMSPacket(dataSerializer));
-            Object byteBuf = byteBufWrapper.readObject(0, byteBufClass);
+            Object byteBuf = byteBufWrapper.readObject(0, NMSUtils.byteBufClass);
             return PacketEvents.get().getByteBufUtil().getBytes(byteBuf);
         }
         return data;
     }
 
+    public void setData(byte[] data) {
+        PacketEvents.get().getByteBufUtil().setBytes(getBuffer(), data);
+    }
+
+    private Object getBuffer() {
+        Object dataSerializer = readObject(0, NMSUtils.packetDataSerializerClass);
+        WrappedPacket byteBufWrapper = new WrappedPacket(new NMSPacket(dataSerializer));
+        return byteBufWrapper.readObject(0, NMSUtils.byteBufClass);
+    }
+
     @Override
-    public Object asNMSPacket() {
-        Object byteBufObject = PacketEvents.get().getByteBufUtil().wrappedBuffer(data);
+    public Object asNMSPacket() throws Exception {
+        Object byteBufObject = PacketEvents.get().getByteBufUtil().newByteBuf(data);
         try {
             Object minecraftKey = NMSUtils.generateMinecraftKey(channelName);
             Object dataSerializer = packetDataSerializerConstructor.newInstance(byteBufObject);

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/out/disconnect/WrappedPacketLoginOutDisconnect.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.out.disconnect;
@@ -27,17 +21,54 @@ package io.github.retrooper.packetevents.packetwrappers.login.out.disconnect;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.packetwrappers.play.out.chat.WrappedPacketOutChat;
+import io.github.retrooper.packetevents.packetwrappers.api.SendableWrapper;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 
-public class WrappedPacketLoginOutDisconnect extends WrappedPacket {
-    public WrappedPacketLoginOutDisconnect(NMSPacket packet) {
+import java.lang.reflect.Constructor;
+
+public class WrappedPacketLoginOutDisconnect extends WrappedPacket implements SendableWrapper {
+
+    private static Constructor<?> packetConstructor;
+    private String reason;
+
+    public WrappedPacketLoginOutDisconnect(final NMSPacket packet) {
         super(packet);
     }
 
+    public WrappedPacketLoginOutDisconnect(final String reason) {
+        this.reason = reason;
+    }
+
+    @Override
+    protected void load() {
+        try {
+            packetConstructor = PacketTypeClasses.Login.Server.DISCONNECT.getConstructors()[1];
+        } catch (final Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     public String getReason() {
-        Object iChatBaseComponent = readObject(0, NMSUtils.iChatBaseComponentClass);
-        return WrappedPacketOutChat.toStringFromIChatBaseComponent(iChatBaseComponent);
+        if (packet != null) {
+            return readIChatBaseComponent(0);
+        } else {
+            return this.reason;
+        }
+    }
+
+    public void setReason(final String reason) {
+        if (packet != null) {
+            writeIChatBaseComponent(0, reason);
+        } else {
+            this.reason = reason;
+        }
+    }
+
+    @Override
+    public Object asNMSPacket() throws Exception {
+        return packetConstructor.newInstance(
+                NMSUtils.generateIChatBaseComponent(getReason())
+        );
     }
 
     @Override

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/out/encryptionbegin/WrappedPacketLoginOutEncryptionBegin.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.out.encryptionbegin;
@@ -39,14 +33,26 @@ public class WrappedPacketLoginOutEncryptionBegin extends WrappedPacket {
         return readString(0);
     }
 
-    public PublicKey getPublicKey() {
-        return (PublicKey) readObject(1, PublicKey.class);
+    public void setEncodedString(String encodedString) {
+        writeString(0, encodedString);
     }
 
-    public byte[] getByteArray() {
+    public PublicKey getPublicKey() {
+        return readObject(1, PublicKey.class);
+    }
+
+    public void setPublicKey(PublicKey key) {
+        writeObject(0, key);
+    }
+
+    public byte[] getVerifyToken() {
         return readByteArray(0);
     }
 
+    public void setVerifyToken(byte[] verifyToken) {
+        writeByteArray(0, verifyToken);
+    }
+
     @Override
     public boolean isSupported() {
         return PacketTypeClasses.Login.Server.ENCRYPTION_BEGIN != null;

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/out/setcompression/WrappedPacketLoginOutSetCompression.java

@@ -1,33 +1,28 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.out.setcompression;
 
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
-import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.packetwrappers.api.SendableWrapper;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
@@ -68,10 +63,18 @@ public class WrappedPacketLoginOutSetCompression extends WrappedPacket implement
         return threshold;
     }
 
+    public void setThreshold(int threshold) {
+        if (packet != null) {
+            writeInt(0, threshold);
+        } else {
+            this.threshold = threshold;
+        }
+    }
+
     @Override
-    public Object asNMSPacket() {
+    public Object asNMSPacket() throws Exception {
         try {
-            return constructor.newInstance(threshold);
+            return constructor.newInstance(getThreshold());
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
@@ -80,6 +83,6 @@ public class WrappedPacketLoginOutSetCompression extends WrappedPacket implement
 
     @Override
     public boolean isSupported() {
-        return PacketTypeClasses.Login.Server.SET_COMPRESSION != null;
+        return version.isNewerThan(ServerVersion.v_1_7_10);
     }
 }

src/main/java/io/github/retrooper/packetevents/packetwrappers/login/out/success/WrappedPacketLoginOutSuccess.java

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.login.out.success;
@@ -27,17 +21,58 @@ package io.github.retrooper.packetevents.packetwrappers.login.out.success;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.packetwrappers.api.SendableWrapper;
 import io.github.retrooper.packetevents.utils.gameprofile.GameProfileUtil;
 import io.github.retrooper.packetevents.utils.gameprofile.WrappedGameProfile;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 
-public class WrappedPacketLoginOutSuccess extends WrappedPacket {
-    public WrappedPacketLoginOutSuccess(NMSPacket packet) {
+import java.lang.reflect.Constructor;
+
+public class WrappedPacketLoginOutSuccess extends WrappedPacket implements SendableWrapper {
+
+    private static Constructor<?> packetConstructor;
+    private WrappedGameProfile wrappedGameProfile;
+
+    public WrappedPacketLoginOutSuccess(final NMSPacket packet) {
         super(packet);
     }
 
+    public WrappedPacketLoginOutSuccess(final WrappedGameProfile wrappedGameProfile) {
+        this.wrappedGameProfile = wrappedGameProfile;
+    }
+
+    @Override
+    protected void load() {
+        try {
+            packetConstructor = PacketTypeClasses.Login.Server.SUCCESS.getConstructors()[1];
+        } catch (final Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     public WrappedGameProfile getGameProfile() {
-        return GameProfileUtil.getWrappedGameProfile(readObject(0, NMSUtils.gameProfileClass));
+        if (packet != null) {
+            return GameProfileUtil.getWrappedGameProfile(readObject(0, NMSUtils.gameProfileClass));
+        } else {
+            return this.wrappedGameProfile;
+        }
+    }
+
+    public void setGameProfile(final WrappedGameProfile wrappedGameProfile) {
+        if (packet != null) {
+            final Object gameProfile = GameProfileUtil.getGameProfile(wrappedGameProfile.getId(), wrappedGameProfile.getName());
+            write(NMSUtils.gameProfileClass, 0, gameProfile);
+        } else {
+            this.wrappedGameProfile = wrappedGameProfile;
+        }
+    }
+
+    @Override
+    public Object asNMSPacket() throws Exception {
+        WrappedGameProfile gp = getGameProfile();
+        return packetConstructor.newInstance(
+                GameProfileUtil.getGameProfile(gp.getId(), gp.getName())
+        );
     }
 
     @Override

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.play.in.abilities;
@@ -29,6 +23,8 @@ import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.utils.reflection.Reflection;
 
+import java.util.Optional;
+
 public final class WrappedPacketInAbilities extends WrappedPacket {
     private static boolean v_1_16_Mode;
 
@@ -41,72 +37,77 @@ public final class WrappedPacketInAbilities extends WrappedPacket {
         v_1_16_Mode = Reflection.getField(PacketTypeClasses.Play.Client.ABILITIES, boolean.class, 1) == null;
     }
 
-    /**
-     * 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
-    public boolean isVulnerable() throws UnsupportedOperationException {
-        if (v_1_16_Mode) {
-            throw new UnsupportedOperationException("This field does not exist on your version!");
-        }
-        return readBoolean(0);
-    }
-
     public boolean isFlying() {
         return readBoolean(v_1_16_Mode ? 0 : 1);
     }
 
-    /**
-     * 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
-    public boolean isFlightAllowed() {
-        if (v_1_16_Mode) {
-            throw new UnsupportedOperationException("This field does not exist on your version!");
-        }
-        return readBoolean(2);
+    public void setFlying(boolean flying) {
+        writeBoolean(v_1_16_Mode ? 0 : 1, flying);
     }
 
-    /**
-     * 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
-    public boolean canInstantlyBuild() {
+    public Optional<Boolean> isVulnerable() {
         if (v_1_16_Mode) {
-            throw new UnsupportedOperationException("This field does not exist on your version!");
+            return Optional.empty();
         }
-        return readBoolean(3);
+        return Optional.of(readBoolean(0));
     }
 
-    /**
-     * 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
-    public float getFlySpeed() {
-        if (v_1_16_Mode) {
-            throw new UnsupportedOperationException("This field does not exist on your version!");
+    public void setVulnerable(boolean vulnerable) {
+        if (!v_1_16_Mode) {
+            writeBoolean(0, vulnerable);
         }
-        return readFloat(0);
     }
 
-    /**
-     * 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
-    public float getWalkSpeed() {
+
+    public Optional<Boolean> isFlightAllowed() {
         if (v_1_16_Mode) {
-            throw new UnsupportedOperationException("This field does not exist on your version!");
+            return Optional.empty();
+        }
+        return Optional.of(readBoolean(2));
+    }
+
+    public void setFlightAllowed(boolean flightAllowed) {
+        if (!v_1_16_Mode) {
+            writeBoolean(2, flightAllowed);
+        }
+    }
+
+    public Optional<Boolean> canInstantlyBuild() {
+        if (v_1_16_Mode) {
+            return Optional.empty();
+        }
+        return Optional.of(readBoolean(3));
+    }
+
+    public void setCanInstantlyBuild(boolean canInstantlyBuild) {
+        if (!v_1_16_Mode) {
+            writeBoolean(3, canInstantlyBuild);
+        }
+    }
+
+    public Optional<Float> getFlySpeed() {
+        if (v_1_16_Mode) {
+            return Optional.empty();
+        }
+        return Optional.of(readFloat(0));
+    }
+
+    public void setFlySpeed(float flySpeed) {
+        if (!v_1_16_Mode) {
+            writeFloat(0, flySpeed);
+        }
+    }
+
+    public Optional<Float> getWalkSpeed() {
+        if (v_1_16_Mode) {
+            return Optional.empty();
+        }
+        return Optional.of(readFloat(1));
+    }
+
+    public void setWalkSpeed(float walkSpeed) {
+        if (!v_1_16_Mode) {
+            writeFloat(1, walkSpeed);
         }
-        return readFloat(1);
     }
 }

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

@@ -0,0 +1,49 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.play.in.armanimation;
+
+import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.enums.EnumUtil;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.player.Hand;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+
+public class WrappedPacketInArmAnimation extends WrappedPacket {
+    public WrappedPacketInArmAnimation(NMSPacket packet) {
+        super(packet);
+    }
+
+    public Hand getHand() {
+        if (version.isOlderThan(ServerVersion.v_1_9)) {
+            return Hand.MAIN_HAND;
+        } else {
+            Enum<?> enumConst = readEnumConstant(0, NMSUtils.enumHandClass);
+            return Hand.valueOf(enumConst.name());
+        }
+    }
+
+    public void setHand(Hand hand) {
+        //Optimize to do nothing on legacy versions. The protocol of the legacy versions only support one hand, the main hand.
+        if (version.isNewerThan(ServerVersion.v_1_8_8)) {
+            Enum<?> enumConst = EnumUtil.valueOf(NMSUtils.enumHandClass, hand.name());
+            writeEnumConstant(0, enumConst);
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/play/in/beacon/WrappedPacketInBeacon.java

@@ -1,3 +1,21 @@
+/*
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 package io.github.retrooper.packetevents.packetwrappers.play.in.beacon;
 
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
@@ -12,7 +30,15 @@ public class WrappedPacketInBeacon extends WrappedPacket {
         return readInt(0);
     }
 
+    public void setPrimaryEffect(int primaryEffect) {
+        writeInt(0, primaryEffect);
+    }
+
     public int getSecondaryEffect() {
         return readInt(1);
     }
+
+    public void setSecondaryEffect(int secondaryEffect) {
+        writeInt(1, secondaryEffect);
+    }
 }

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

@@ -1,25 +1,19 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.play.in.blockdig;
@@ -27,22 +21,16 @@ package io.github.retrooper.packetevents.packetwrappers.play.in.blockdig;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.enums.EnumUtil;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.player.Direction;
-import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import org.jetbrains.annotations.Nullable;
-
-import java.lang.reflect.InvocationTargetException;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
 
 public final class WrappedPacketInBlockDig extends WrappedPacket {
-    private static Class<?> blockPositionClass;
-    private static Class<?> enumDirectionClass;
-    private static Class<?> digTypeClass;
+    private static Class<? extends Enum<?>> digTypeClass;
     private static boolean isVersionLowerThan_v_1_8;
-    private Object blockPosObj;
-    private Object enumDirObj;
 
     public WrappedPacketInBlockDig(NMSPacket packet) {
         super(packet);
@@ -51,86 +39,36 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
     @Override
     protected void load() {
         Class<?> blockDigClass = PacketTypeClasses.Play.Client.BLOCK_DIG;
-        try {
-            if (version.isNewerThan(ServerVersion.v_1_7_10)) {
-                blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
-                enumDirectionClass = NMSUtils.getNMSClass("EnumDirection");
-            }
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
         isVersionLowerThan_v_1_8 = version.isOlderThan(ServerVersion.v_1_8);
 
         if (version != ServerVersion.v_1_7_10) {
             try {
-                digTypeClass = NMSUtils.getNMSClass("EnumPlayerDigType");
+                digTypeClass = NMSUtils.getNMSEnumClass("EnumPlayerDigType");
             } catch (ClassNotFoundException e) {
                 //It is probably a subclass
-                digTypeClass = SubclassUtil.getSubClass(blockDigClass, "EnumPlayerDigType");
+                digTypeClass = SubclassUtil.getEnumSubClass(blockDigClass, "EnumPlayerDigType");
             }
         }
     }
 
-    /**
-     * Get X position of the block
-     *
-     * @return Block Position X
-     */
-    public int getX() {
+    public Vector3i getBlockPosition() {
         if (isVersionLowerThan_v_1_8) {
-            return readInt(0);
+            int x = readInt(0);
+            int y = readInt(1);
+            int z = readInt(2);
+            return new Vector3i(x, y, z);
         } else {
-            if (blockPosObj == null) {
-                blockPosObj = readObject(0, blockPositionClass);
-            }
-            try {
-                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
-            } catch (IllegalAccessException | InvocationTargetException e) {
-                e.printStackTrace();
-            }
-            return -1;
+            return readBlockPosition(0);
         }
     }
 
-    /**
-     * Get Y position of the block
-     *
-     * @return Block Position Y
-     */
-    public int getY() {
+    public void setBlockPosition(Vector3i blockPos) {
         if (isVersionLowerThan_v_1_8) {
-            return readInt(1);
+            writeInt(0, blockPos.x);
+            writeInt(1, blockPos.y);
+            writeInt(2, blockPos.z);
         } else {
-            if (blockPosObj == null) {
-                blockPosObj = readObject(0, blockPositionClass);
-            }
-            try {
-                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
-            } catch (IllegalAccessException | InvocationTargetException e) {
-                e.printStackTrace();
-            }
-            return -1;
-        }
-    }
-
-    /**
-     * Get Z position of the block
-     *
-     * @return Block Position Z
-     */
-    public int getZ() {
-        if (isVersionLowerThan_v_1_8) {
-            return readInt(2);
-        } else {
-            if (blockPosObj == null) {
-                blockPosObj = readObject(0, blockPositionClass);
-            }
-            try {
-                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
-            } catch (IllegalAccessException | InvocationTargetException e) {
-                e.printStackTrace();
-            }
-            return -1;
+            writeBlockPosition(0, blockPos);
         }
     }
 
@@ -139,17 +77,21 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
      *
      * @return Direction
      */
-    public byte getDirection() {
+    public Direction getDirection() {
         if (isVersionLowerThan_v_1_8) {
-            return(byte) readInt(3);
+            return Direction.getDirection(readInt(3));
         } else {
-            if (enumDirObj == null) {
-                enumDirObj = readObject(0, enumDirectionClass);
-                if (enumDirObj == null) {
-                    return -1; //errorr
-                }
-            }
-            return Direction.getByName(((Enum) enumDirObj).name());
+            Enum<?> enumDir = readEnumConstant(0, NMSUtils.enumDirectionClass);
+            return Direction.valueOf(enumDir.name());
+        }
+    }
+
+    public void setDirection(Direction direction) {
+        if (isVersionLowerThan_v_1_8) {
+            writeInt(3, direction.getFaceValue());
+        } else {
+            Enum<?> enumConst = EnumUtil.valueOf(NMSUtils.enumDirectionClass, direction.name());
+            write(NMSUtils.enumDirectionClass, 0, enumConst);
         }
     }
 
@@ -162,7 +104,16 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
         if (isVersionLowerThan_v_1_8) {
             return PlayerDigType.values()[readInt(4)];
         } else {
-            return PlayerDigType.valueOf(((Enum) readObject(0, digTypeClass)).name());
+            return PlayerDigType.valueOf(readObject(0, digTypeClass).name());
+        }
+    }
+
+    public void setDigType(PlayerDigType type) {
+        if (isVersionLowerThan_v_1_8) {
+            writeInt(4, type.ordinal());
+        } else {
+            Enum<?> enumConst = EnumUtil.valueOf(digTypeClass, type.name());
+            write(digTypeClass, 0, enumConst);
         }
     }
 
@@ -173,7 +124,13 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
         DROP_ALL_ITEMS,
         DROP_ITEM,
         RELEASE_USE_ITEM,
+
+        /**
+         * Doesn't exist on the newest versions.
+         */
+        @Deprecated
         SWAP_HELD_ITEMS,
+
         SWAP_ITEM_WITH_OFFHAND,
         UNKNOWN
     }

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

@@ -1,37 +1,40 @@
 /*
- * MIT License
+ * This file is part of packetevents - https://github.com/retrooper/packetevents
+ * Copyright (C) 2021 retrooper and contributors
  *
- * Copyright (c) 2020 retrooper
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
  *
- * 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:
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package io.github.retrooper.packetevents.packetwrappers.play.in.blockplace;
 
 import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.enums.EnumUtil;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.player.Direction;
+import io.github.retrooper.packetevents.utils.player.Hand;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
+import io.github.retrooper.packetevents.utils.vector.Vector3f;
+import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.Optional;
 
 
 public final class WrappedPacketInBlockPlace extends WrappedPacket {
-    private static boolean isHigherThan_v_1_8_8, isHigherThan_v_1_7_10;
+    private static boolean newerThan_v_1_8_8, newerThan_v_1_7_10;
+    private static int handEnumIndex;
 
     public WrappedPacketInBlockPlace(final NMSPacket packet) {
         super(packet);
@@ -39,61 +42,120 @@ public final class WrappedPacketInBlockPlace extends WrappedPacket {
 
     @Override
     protected void load() {
-        isHigherThan_v_1_8_8 = version.isNewerThan(ServerVersion.v_1_8_8);
-        isHigherThan_v_1_7_10 = version.isNewerThan(ServerVersion.v_1_7_10);
-    }
-
-    public byte getDirection() {
-        if (isHigherThan_v_1_8_8) {
-            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
-            return Direction.getByName(((Enum) blockPlace_1_9.getEnumDirectionObject()).name());
-        } else if (isHigherThan_v_1_7_10) {
-            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-            return (byte) blockPlace_1_8.getFace();
-        } else {
-            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
-            return (byte) blockPlace_1_7_10.face;
+        newerThan_v_1_7_10 = version.isNewerThan(ServerVersion.v_1_7_10);
+        newerThan_v_1_8_8 = version.isNewerThan(ServerVersion.v_1_8_8);
+        try {
+            Object handEnum = readObject(1, NMSUtils.enumHandClass);
+            handEnumIndex = 1;
+        } catch (Exception ex) {
+            handEnumIndex = 0;//Most likely a newer version
         }
     }
 
-    public int getX() {
-        if (isHigherThan_v_1_8_8) {
-            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
-            return blockPlace_1_9.getX();
-        } else if (isHigherThan_v_1_7_10) {
-            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-            return blockPlace_1_8.getX();
+    public Hand getHand() {
+        if (version.isOlderThan(ServerVersion.v_1_9)) {
+            return Hand.MAIN_HAND;
         } else {
-            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
-            return blockPlace_1_7_10.x;
+            Enum<?> enumConst = readEnumConstant(handEnumIndex, NMSUtils.enumHandClass);
+            return Hand.valueOf(enumConst.name());
         }
     }
 
-    public int getY() {
-        if (isHigherThan_v_1_8_8) {
-            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
-            return blockPlace_1_9.getY();
-
-        } else if (isHigherThan_v_1_7_10) {
-            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-            return blockPlace_1_8.getY();
-        } else {
-            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
-            return blockPlace_1_7_10.y;
+    public void setHand(Hand hand) {
+        //Optimize to do nothing on legacy versions. The protocol of the legacy versions only support one hand, the main hand.
+        if (version.isNewerThan(ServerVersion.v_1_8_8)) {
+            Enum<?> enumConst = EnumUtil.valueOf(NMSUtils.enumHandClass, hand.name());
+            write(NMSUtils.enumHandClass, handEnumIndex, enumConst);
         }
     }
 
-    public int getZ() {
-        if (isHigherThan_v_1_8_8) {
-            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
-            return blockPlace_1_9.getZ();
-        } else if (isHigherThan_v_1_7_10) {
-            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-            return blockPlace_1_8.getZ();
+    public Direction getDirection() {
+        if (newerThan_v_1_8_8) {
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(new NMSPacket(packet.getRawNMSPacket()));
+            return blockPlace_1_9.getDirection();
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(new NMSPacket(packet.getRawNMSPacket()));
+            return Direction.getDirection(blockPlace_1_8.getFace());
         } else {
-            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
-            return blockPlace_1_7_10.z;
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(new NMSPacket(packet.getRawNMSPacket()));
+            return Direction.getDirection(blockPlace_1_7_10.getFace());
         }
     }
 
+    public void setDirection(Direction direction) {
+        if (newerThan_v_1_8_8) {
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(new NMSPacket(packet.getRawNMSPacket()));
+            blockPlace_1_9.setDirection(direction);
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(new NMSPacket(packet.getRawNMSPacket()));
+            blockPlace_1_8.setFace(direction.getFaceValue());
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(new NMSPacket(packet.getRawNMSPacket()));
+            blockPlace_1_7_10.setFace(direction.getFaceValue());
+        }
+    }
+
+    public Vector3i getBlockPosition() {
+        Vector3i blockPos;
+        if (newerThan_v_1_8_8) {
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
+            blockPos = blockPlace_1_9.getBlockPosition();
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            blockPos = blockPlace_1_8.getBlockPosition();
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            blockPos = blockPlace_1_7_10.getBlockPosition();
+        }
+        return blockPos;
+    }
+
+    public Optional<Vector3f> getCursorPosition() {
+        if (newerThan_v_1_8_8) {
+            return Optional.empty();
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            return Optional.of(blockPlace_1_8.getCursorPosition());
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            return Optional.of(blockPlace_1_7_10.getCursorPosition());
+        }
+    }
+
+    public void setCursorPosition(Vector3f cursorPos) {
+        if (newerThan_v_1_8_8) {
+
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            blockPlace_1_8.setCursorPosition(cursorPos);
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            blockPlace_1_7_10.setCursorPosition(cursorPos);
+        }
+    }
+
+    public Optional<ItemStack> getItemStack() {
+        if (newerThan_v_1_8_8) {
+            return Optional.empty();
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            return Optional.of(blockPlace_1_8.getItemStack());
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            return Optional.of(blockPlace_1_7_10.getItemStack());
+        }
+    }
+
+
+    public void setItemStack(ItemStack stack) {
+        if (newerThan_v_1_8_8) {
+
+        } else if (newerThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            blockPlace_1_8.setItemStack(stack);
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            blockPlace_1_7_10.setItemStack(stack);
+        }
+    }
 }