Merge pull request #62 from retrooper/dev

1.7.5 release

.github/workflows/maven.yml

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

.gitignore

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

LICENSE

@@ -1,339 +1,21 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+MIT License
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+Copyright (c) 2020 retrooper
 
-                            Preamble
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
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-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
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-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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-a notice placed by the copyright holder saying it may be distributed
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-
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-    it under the terms of the GNU General Public License as published by
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-    but WITHOUT ANY WARRANTY; without even the implied warranty of
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-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This 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.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+SOFTWARE.

README.md

@@ -1,28 +1,20 @@
-# packetevents by retrooper
+# packetevents 
 
-A lightweight spigot packetlistener & packetsender coded by retrooper.
+A Spigot packet API with some nice utlities.
 
-## Credit
-
-PacketEvents forked [Atlas](https://github.com/funkemunky/Atlas)' [Packet](https://github.com/funkemunky/Atlas/blob/master/AtlasParent/Atlas/src/main/java/cc/funkemunky/api/tinyprotocol/api/Packet.java) class.
-
-[Find our forked version](https://github.com/retrooper/packetevents/blob/master/src/main/java/io/github/retrooper/packetevents/packet/PacketType.java)
 ## About
 
-This packetlistener is **only** supported on spigot servers and has been tested to work on these spigot forks: PaperSpigot, Tuinity
+This packetlistener is **only** supported on Spigot servers and has been tested to work on these Spigot forks: PaperMC, Tuinity
 
 * No dependencies
 
-* Licensed under the GPL2 license.
+* Licensed under the MIT license
 
-[![](https://img.shields.io/badge/License-GPLv2-blue.svg)](https://www.gnu.org/licenses/gpl-2.0)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 
-Join my discord server(to talk to me): https://discord.gg/ZWTkg4v
+Our discord server: https://discord.me/packetevents
 
 [![](https://jitpack.io/v/retrooper/packetevents.svg)](https://jitpack.io/#retrooper/packetevents)
 
 [![](https://jitci.com/gh/retrooper/packetevents/svg)](https://jitci.com/gh/retrooper/packetevents)
 
-To learn how to setup this API please click on the link below
-[Setup Guide](https://github.com/retrooper/packetevents/wiki/PacketEvents-Setup-Guide)
-(or just paste this into your browser: https://github.com/retrooper/packetevents/wiki/PacketEvents-Setup-Guide)

pom.xml

@@ -6,41 +6,48 @@
 
     <groupId>io.github.retrooper</groupId>
     <artifactId>packetevents</artifactId>
-    <version>1.4</version>
-    <packaging>jar</packaging>
-    <name>packetevents</name>
-    <properties>
-        <java.version>1.8</java.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
+    <version>1.7.5</version>
+
+    <!-- You can build the project with this: "mvn clean compile assembly:single" -->
     <build>
-        <defaultGoal>clean package</defaultGoal>
         <plugins>
             <plugin>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.7.0</version>
+                <artifactId>maven-assembly-plugin</artifactId>
                 <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
                 </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.7.0</version>
                 <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
+                    <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>
@@ -69,8 +76,29 @@
     <dependencies>
         <dependency>
             <groupId>org.github.spigot</groupId>
-            <artifactId>1.7.10</artifactId>
-            <version>1.7.10</version>
+            <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>
 
@@ -81,14 +109,20 @@
             <scope>provided</scope>
         </dependency>
 
-        <!-- ProtocolLib API-->
+        <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>
-        <!-- ViaVersion API-->
+
         <dependency>
             <groupId>us.myles</groupId>
             <artifactId>viaversion</artifactId>
@@ -96,12 +130,18 @@
             <scope>provided</scope>
         </dependency>
 
-        <!-- ProtocolSupport API-->
         <dependency>
             <groupId>com.github.ProtocolSupport</groupId>
             <artifactId>ProtocolSupport</artifactId>
             <version>4fdd683</version>
             <scope>provided</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
+            <version>1.8.8-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 </project>

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

@@ -1,125 +1,257 @@
+/*
+ * 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;
 
-import io.github.retrooper.packetevents.annotations.PacketHandler;
-import io.github.retrooper.packetevents.event.PacketListener;
-import io.github.retrooper.packetevents.event.impl.BukkitMoveEvent;
-import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
-import io.github.retrooper.packetevents.event.impl.PlayerInjectEvent;
-import io.github.retrooper.packetevents.event.impl.ServerTickEvent;
-import io.github.retrooper.packetevents.packet.PacketType;
-import io.github.retrooper.packetevents.packet.PacketTypeClasses;
+import io.github.retrooper.packetevents.bungee.BungeePluginMessageListener;
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.packetmanager.PacketManager;
+import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.settings.PacketEventsSettings;
+import io.github.retrooper.packetevents.updatechecker.UpdateChecker;
+import io.github.retrooper.packetevents.utils.entityfinder.EntityFinderUtils;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.player.ClientVersion;
+import io.github.retrooper.packetevents.utils.server.PEVersion;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
 import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
-import org.bukkit.event.player.PlayerMoveEvent;
+import org.bukkit.event.player.PlayerLoginEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.plugin.Plugin;
 
-public final class PacketEvents implements PacketListener, Listener {
+import java.util.ArrayList;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+
+public final class PacketEvents implements Listener {
     private static final PacketEventsAPI packetEventsAPI = new PacketEventsAPI();
     private static final PacketEvents instance = new PacketEvents();
-    private static boolean hasRegistered;
-    private static int currentTick;
-    private static Plugin plugin;
-    private static boolean hasLoaded;
+    private static final ArrayList<Plugin> plugins = new ArrayList<>(1);
+    private static boolean loaded, initialized;
+    private static final PEVersion version = new PEVersion(1, 7, 5);
+
+    private static PacketEventsSettings settings = new PacketEventsSettings();
+    /** General executor service, basically for anything that the packet executor service doesn't do.
+     */
+    public static ExecutorService generalExecutorService = Executors.newCachedThreadPool();
+    //Executor used for player injecting/ejecting and for packet processing/event calling
+    public static ExecutorService packetHandlingExecutorService = Executors.newSingleThreadExecutor();
 
     /**
-     * Call this before start(), this is also very heavy
+     * This loads the PacketEvents API.
+     * <p>
+     * ServerVersion:
+     * In this method we detect and cache the server version.
+     * <p>
+     * NMSUtils:
+     * We setup some NMS utilities.
+     * <p>
+     * Packet ID System:
+     * All the packet classes we will be needing are cached in a Map with an integer ID.
+     * <p>
+     * Version Lookup Utils:
+     * We setup the client protocol version system.
+     * We check if ViaVersion, ProtocolSupport or ProtocolLib is present.
+     * <p>
+     * Wrappers:
+     * All PacketEvents' wrappers are setup and do all loading they need to do.
      */
     public static void load() {
-        PacketTypeClasses.Client.load();
-        PacketTypeClasses.Server.load();
-        hasLoaded = true;
+        if (!loaded) {
+            ServerVersion version = ServerVersion.getVersion();
+            WrappedPacket.version = version;
+            PacketEvent.version = version;
+            NMSUtils.version = version;
+            EntityFinderUtils.version = version;
+
+            try {
+                NMSUtils.load();
+
+                PacketTypeClasses.Client.load();
+                PacketTypeClasses.Server.load();
+                PacketTypeClasses.Login.load();
+                PacketTypeClasses.Status.load();
+
+                EntityFinderUtils.load();
+
+                WrappedPacket.loadAllWrappers();
+            } catch (Exception ex) {
+                throw new IllegalStateException("PacketEvents failed to successfully load...", ex);
+            }
+            loaded = true;
+        }
+
+    }
+
+    public static void loadSettings(PacketEventsSettings settings) {
+        PacketEvents.settings = settings;
+    }
+
+    public static void init(final Plugin plugin) {
+        init(plugin, settings);
     }
 
     /**
-     * Starts the server tick task and registers what is needed to be registered
+     * Initiates PacketEvents
+     * <p>
+     * Loading:
+     * Loads PacketEvents if you haven't already.
+     * <p>
+     * Registering:
+     * Registers this class as a Bukkit listener to inject/eject players.
      *
-     * @param plugin
+     * @param pl JavaPlugin instance
      */
-    public static void start(final Plugin plugin) {
-        if (!hasLoaded) {
-            load();
-        }
-        if (!hasRegistered) {
-            //Register Bukkit and PacketListener
-            getAPI().getEventManager().registerListener(getInstance());
+    public static void init(final Plugin pl, PacketEventsSettings packetEventsSettings) {
+        load();
+        if (!initialized) {
+            settings = packetEventsSettings;
+            int packetHandlingThreadCount = settings.getPacketHandlingThreadCount();
+            //if the count is 1 or is invalid
+            if(packetHandlingThreadCount == 1 || packetHandlingThreadCount < 0) {
+                packetHandlingExecutorService = Executors.newSingleThreadExecutor();
+            }
+            else {
+                packetHandlingExecutorService = Executors.newFixedThreadPool(packetHandlingThreadCount);
+            }
+            plugins.add(pl);
 
-            Bukkit.getPluginManager().registerEvents(getInstance(), plugin);
+            //Register Bukkit listener
+            Bukkit.getPluginManager().registerEvents(instance, plugins.get(0));
+            PacketEvents.getAPI().packetManager = new PacketManager(plugins.get(0), settings.shouldInjectEarly());
 
-            //Start the server tick task
-            final Runnable tickRunnable = new Runnable() {
-                @Override
-                public void run() {
-                    getAPI().getEventManager().callEvent(new ServerTickEvent(currentTick++, PacketEvents.getAPI().currentMillis()));
-                }
-            };
-            getAPI().setServerTickTask(Bukkit.getScheduler().runTaskTimerAsynchronously(plugin, tickRunnable, 0L, 1L));
-            hasRegistered = true;
-            PacketEvents.plugin = plugin;
+            for (final Player p : Bukkit.getOnlinePlayers()) {
+                getAPI().getPlayerUtils().injectPlayer(p);
+            }
+
+            if (settings.shouldCheckForUpdates()) {
+               PacketEvents.generalExecutorService.execute(() -> new UpdateChecker().handleUpdate());
+            }
+
+            if (getAPI().getServerUtils().isBungeeCordEnabled()) {
+                Bukkit.getMessenger().registerOutgoingPluginChannel(plugins.get(0), "BungeeCord");
+                Bukkit.getServer().getMessenger().registerIncomingPluginChannel(plugins.get(0), BungeePluginMessageListener.tagName, new BungeePluginMessageListener());
+            }
+
+            initialized = true;
         }
     }
 
     /**
-     * Stop all tasks and unregisters all PacketEvents' listeners
+     *
      */
     public static void stop() {
-        if (getAPI().getServerTickTask() != null) {
-            getAPI().getServerTickTask().cancel();
-        }
-        getAPI().getEventManager().unregisterAllListeners();
+        if (initialized) {
+            for (Player player : Bukkit.getOnlinePlayers()) {
+                PacketEvents.getAPI().packetManager.ejectPlayer(player);
+            }
 
-        PacketType.Client.packetIds.clear();
-        PacketType.Server.packetIds.clear();
+            if (PacketEvents.getAPI().packetManager.tinyProtocol != null) {
+                PacketEvents.getAPI().packetManager.tinyProtocol.unregisterChannelHandler();
+            }
+            getAPI().getEventManager().unregisterAllListeners();
+            PacketEvents.generalExecutorService.shutdownNow();
+            PacketEvents.packetHandlingExecutorService.shutdownNow();
+            initialized = false;
+        }
+    }
+
+    public static boolean hasLoaded() {
+        return loaded;
+    }
+
+    public static boolean isInitialized() {
+        return initialized;
     }
 
     public static PacketEventsAPI getAPI() {
         return packetEventsAPI;
     }
 
-
-    /**
-     * Get an instance of the PacketEvents API class
-     *
-     * @return instance
-     */
-    private static PacketEvents getInstance() {
-        return instance;
-    }
-
-    public static Plugin getPlugin() {
-        return plugin;
+    public static ArrayList<Plugin> getPlugins() {
+        return plugins;
     }
 
     /**
-     * Do not check the client version in or before the PlayerInjectEvent, use the PostPlayerInjectEvent.
-     * It is not recommended to do much in the PlayerInjectEvent, as some fields in the Player object are be null.
-     * Use the PostPlayerInjectEvent which is only called after the PlayerJoinEvent if the player was injected.
+     * Get the PacketEvents settings.
      *
-     * @param e
+     * @return Configure some settings for the API
      */
-    @PacketHandler
-    public void onInject(final PlayerInjectEvent e) {
-        getAPI().getPlayerUtilities().clientVersionsMap.put(e.getPlayer().getUniqueId(), e.getClientVersion());
+    public static PacketEventsSettings getSettings() {
+        return settings;
     }
 
-    @PacketHandler
-    public void onReceive(final PacketReceiveEvent e) {
+    public static PEVersion getVersion() {
+        return version;
+    }
+
+    @EventHandler
+    public void onLogin(PlayerLoginEvent e) {
+        if (PacketEvents.getSettings().shouldInjectEarly()) {
+            assert getAPI().packetManager.tinyProtocol != null;
+            try {
+                if (getAPI().packetManager.canInject(e.getPlayer())) {
+                    getAPI().packetManager.injectPlayer(e.getPlayer());
+                }
+            } catch (Exception ex) {
+                e.disallow(PlayerLoginEvent.Result.KICK_OTHER, "We are unable to inject you. Please try again!");
+            }
+        }
     }
 
     @EventHandler
     public void onJoin(final PlayerJoinEvent e) {
-        getAPI().getPlayerUtilities().injectPlayer(e.getPlayer());
+        if (!VersionLookupUtils.hasHandledLoadedDependencies()) {
+            VersionLookupUtils.handleLoadedDependencies();
+        }
+        Object channel = NMSUtils.getChannel(e.getPlayer());
+        //Waiting for the BungeeCord server to send their plugin message with your version,
+        //So we leave bungee alone
+        if (!PacketEvents.getAPI().getServerUtils().isBungeeCordEnabled()) {
+            if (VersionLookupUtils.isDependencyAvailable()) {
+                ClientVersion version = ClientVersion.getClientVersion(VersionLookupUtils.getProtocolVersion(e.getPlayer()));
+                PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.put(channel, version);
+            }
+        }
+        if (!PacketEvents.getSettings().shouldInjectEarly()) {
+            if (getAPI().packetManager.canInject(e.getPlayer())) {
+                PacketEvents.getAPI().packetManager.injectPlayer(e.getPlayer());
+            }
+        }
     }
 
+
     @EventHandler
     public void onQuit(final PlayerQuitEvent e) {
-        getAPI().getPlayerUtilities().uninjectPlayer(e.getPlayer());
-    }
-
-    @EventHandler
-    public void onMove(final PlayerMoveEvent e) {
-        getAPI().getEventManager().callEvent(new BukkitMoveEvent(e));
+        PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.remove(e.getPlayer().getUniqueId());
     }
 }

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

@@ -1,45 +1,47 @@
+/*
+ * 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;
 
 import io.github.retrooper.packetevents.event.manager.EventManager;
-import org.bukkit.scheduler.BukkitTask;
+import io.github.retrooper.packetevents.packetmanager.PacketManager;
+import io.github.retrooper.packetevents.settings.PacketEventsSettings;
+import io.github.retrooper.packetevents.utils.player.PlayerUtils;
+import io.github.retrooper.packetevents.utils.server.ServerUtils;
 
 public final class PacketEventsAPI {
     private final EventManager eventManager = new EventManager();
     private final PlayerUtils playerUtils = new PlayerUtils();
     private final ServerUtils serverUtils = new ServerUtils();
-
-    private BukkitTask serverTickTask;
-
-    /**
-     * Not thread safe
-     * Preciser than #currentMillis()
-     * Expensive
-     * Returns crazy values when you change system time
-     *
-     * @return {@link System#nanoTime()} / 1000000(1 million)
-     */
-    public long currentPreciseMillis() {
-        return System.nanoTime() / 1000000;
-    }
-
-    /**
-     * Thread safe
-     * Less precise compared to #currentPreciseMillis()
-     * Cheap
-     * Doesn't break when system time is changed
-     *
-     * @return {@link System#currentTimeMillis()}
-     */
-    public long currentMillis() {
-        return System.currentTimeMillis();
-    }
+    public PacketManager packetManager = null;
 
     /**
      * Get all utilities to do with the player
      *
      * @return Player Utilities
      */
-    public PlayerUtils getPlayerUtilities() {
+    public PlayerUtils getPlayerUtils() {
         return playerUtils;
     }
 
@@ -48,10 +50,11 @@ public final class PacketEventsAPI {
      *
      * @return Server Utilities
      */
-    public ServerUtils getServerUtilities() {
+    public ServerUtils getServerUtils() {
         return serverUtils;
     }
 
+
     /**
      * Get the event manager
      * Used to call events, register and unregister listeners
@@ -61,24 +64,4 @@ public final class PacketEventsAPI {
     public EventManager getEventManager() {
         return eventManager;
     }
-
-    /**
-     * Get the server tick task, called **asynchronously** every tick
-     *
-     * @return server tick task
-     */
-    public BukkitTask getServerTickTask() {
-        return serverTickTask;
-    }
-
-    /**
-     * Modify the server tick task object
-     *
-     * @param task
-     */
-    public void setServerTickTask(final BukkitTask task) {
-        this.serverTickTask = task;
-    }
-
-
-}
+}

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

@@ -1,40 +0,0 @@
-package io.github.retrooper.packetevents;
-
-import io.github.retrooper.packetevents.enums.ClientVersion;
-import io.github.retrooper.packetevents.handler.NettyPacketHandler;
-import io.github.retrooper.packetevents.packetwrappers.Sendable;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-import org.bukkit.entity.Player;
-
-import java.util.HashMap;
-import java.util.UUID;
-
-public class PlayerUtils {
-    protected final HashMap<UUID, ClientVersion> clientVersionsMap = new HashMap<UUID, ClientVersion>();
-
-    public int getPlayerPing(final Player player) {
-        return NMSUtils.getPlayerPing(player);
-    }
-
-    public ClientVersion getClientVersion(final UUID uuid) {
-        return clientVersionsMap.get(uuid);
-    }
-
-    public ClientVersion getClientVersion(final Player player) {
-        return getClientVersion(player.getUniqueId());
-    }
-
-    public void injectPlayer(final Player player) {
-        NettyPacketHandler.injectPlayer(player);
-    }
-
-    public void uninjectPlayer(final Player player) {
-        NettyPacketHandler.uninjectPlayer(player);
-    }
-
-    public void sendPacket(final Player player, final Sendable sendable) {
-        NMSUtils.sendSendableWrapper(player, sendable);
-    }
-
-
-}

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

@@ -1,31 +0,0 @@
-package io.github.retrooper.packetevents;
-
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.enums.SystemOS;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-
-import java.lang.reflect.InvocationTargetException;
-
-public class ServerUtils {
-    public ServerVersion getServerVersion() {
-        return ServerVersion.getVersion();
-    }
-
-    public double[] getRecentServerTPS() {
-        double[] tpsArray = new double[0];
-        try {
-            tpsArray = NMSUtils.recentTPS();
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-        return tpsArray;
-    }
-
-    public double getCurrentServerTPS() {
-        return getRecentServerTPS()[0];
-    }
-
-    public SystemOS getPlatform() {
-        return SystemOS.getOperatingSystem();
-    }
-}

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

@@ -0,0 +1,37 @@
+/*
+ * 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.annotations;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * This annotation indicates that something might be unstable.
+ */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Beta {
+}

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

@@ -1,3 +1,27 @@
+/*
+ * 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.annotations;
 
 
@@ -6,7 +30,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
 /**
- * Is for sure not null.
+ * Guaranteed to not be null.
  */
 @Documented
 @Retention(RetentionPolicy.RUNTIME)

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

@@ -1,3 +1,27 @@
+/*
+ * 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.annotations;
 
 
@@ -6,7 +30,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
 /**
- * Could be null.
+ * Possible that it is null.
  */
 @Documented
 @Retention(RetentionPolicy.RUNTIME)

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

@@ -1,18 +0,0 @@
-package io.github.retrooper.packetevents.annotations;
-
-import io.github.retrooper.packetevents.annotations.data.EventSynchronization;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-@Target(ElementType.METHOD)
-@Retention(RetentionPolicy.RUNTIME)
-/**
- * Just like Bukkit's @EventHandler, but for PacketEvents' custom event system.
- * Make sure your class implements the PacketListener interface, and is registered when annotating your method with this annotation!
- */
-public @interface PacketHandler {
-    EventSynchronization synchronization() default EventSynchronization.NORMAL;
-}

src/main/java/io/github/retrooper/packetevents/annotations/data/EventSynchronization.java

@@ -1,5 +0,0 @@
-package io.github.retrooper.packetevents.annotations.data;
-
-public enum EventSynchronization {
-    FORCE_SYNC, FORCE_ASYNC, NORMAL
-}

src/main/java/io/github/retrooper/packetevents/bungee/BungeePluginMessageListener.java

@@ -0,0 +1,55 @@
+/*
+ * 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.bungee;
+
+import com.google.common.io.ByteArrayDataInput;
+import com.google.common.io.ByteStreams;
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.player.ClientVersion;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.messaging.PluginMessageListener;
+
+import java.util.UUID;
+
+public class BungeePluginMessageListener implements PluginMessageListener {
+    public static String tagName = "packetevents";
+
+    @Override
+    public void onPluginMessageReceived(String tag, Player player, byte[] bytes) {
+        if (tag.equals(tagName)) {
+            ByteArrayDataInput in = ByteStreams.newDataInput(bytes);
+            if (in.readUTF().equals("version")) {
+                String uuidString = in.readUTF();
+                Object channel = NMSUtils.getChannel(player);
+                short protocolVersion = in.readShort();
+                ClientVersion version = ClientVersion.getClientVersion(protocolVersion);
+                PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.put(channel, version);
+            }
+        }
+    }
+
+
+}

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

@@ -1,104 +0,0 @@
-package io.github.retrooper.packetevents.enums;
-
-public enum ClientVersion {
-    LESS_THAN_V_1_7_10, v_1_7_10, v_1_8, v_1_9, v_1_9_1, v_1_9_2, v_1_9_3, v_1_10, v_1_11, v_1_11_1, v_1_12, v_1_12_1, v_1_12_2,
-    v_1_13, v_1_13_1, v_1_13_2, v_1_14, v_1_14_1, v_1_14_2, v_1_14_3, v_1_14_4, v_1_15, v_1_15_1, v_1_15_2, v_1_16, v_1_16_1, HIGHER_THAN_V_1_16_1, INVALID, ACCESS_FAILURE;
-
-    public static ClientVersion fromProtocolVersion(final int protocolVersion) {
-        int remainder = -1;
-        switch (protocolVersion) {
-            case -1:
-                return ACCESS_FAILURE;
-            case 1:
-            case 2:
-            case 3:
-            case 4:
-                return LESS_THAN_V_1_7_10;
-            case 47://ranging from 1.8->1.8.9
-                return v_1_8;
-            case 107:
-                return v_1_9;
-            case 108:
-                return v_1_9_1;
-            case 109:
-                return v_1_9_2;
-            case 110:
-                return v_1_9_3; //can be 1.9.3 or 1.9.4
-            case 210:
-                return v_1_10; //could be 1.10,1.10.1, 1.10.2
-            case 315:
-                return v_1_11;
-            case 316: //could be 11.1 or 11.2
-                return v_1_11_1;
-            case 335:
-                return v_1_12;
-            case 338:
-                return v_1_12_1;
-            case 340:
-                return v_1_12_2;
-            case 393:
-                return v_1_13;
-            case 401:
-                return v_1_13_1;
-            case 404:
-                return v_1_13_2;
-            case 477:
-                return v_1_14;
-            case 480:
-                return v_1_14_1;
-            case 485:
-                return v_1_14_2;
-            case 490:
-                return v_1_14_3;
-            case 498:
-                return v_1_14_4;
-            case 573:
-                return v_1_15;
-            case 575:
-                return v_1_15_1;
-            case 578:
-                return v_1_15_2;
-            case 735:
-                return v_1_16;
-            case 736:
-                return v_1_16_1;
-            default:
-                remainder = protocolVersion;
-        }
-        if (remainder > 578) {
-            return HIGHER_THAN_V_1_16_1;
-        }
-        return INVALID;
-    }
-
-    /**
-     * Returns if the client's version is more up to date than the argument passed version
-     *
-     * @param version
-     * @return
-     */
-    public boolean isHigherThan(final ClientVersion version) {
-        if (this == version) return false;
-        return !isLowerThan(version);
-    }
-
-    /**
-     * Returns if the client's version is more outdated than the argument passed version
-     *
-     * @param version
-     * @return
-     */
-    public boolean isLowerThan(final ClientVersion version) {
-        if (version == this) return false;
-        final int len = values().length;
-        for (byte i = 0; i < len; i++) {
-            final ClientVersion v = values()[i];
-            if (v == this) {
-                return true;
-            } else if (v == version) {
-                return false;
-            }
-        }
-        return false;
-    }
-}

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

@@ -1,15 +1,57 @@
+/*
+ * 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.enums;
 
 public enum Direction {
-    DOWN, UP, NORTH, SOUTH, WEST, EAST, NORTH_EAST,
-    NORTH_WEST, SOUTH_EAST,
-    SOUTH_WEST, WEST_NORTH_WEST,
-    NORTH_NORTH_WEST, NORTH_NORTH_EAST,
-    EAST_NORTH_EAST, EAST_SOUTH_EAST,
-    SOUTH_SOUTH_EAST, SOUTH_SOUTH_WEST,
-    WEST_SOUTH_WEST, SELF, NULL;
+    /**
+     * -Y offset
+     */
+    DOWN,
 
-    public static Direction get(final int i) {
-        return values()[i];
-    }
+    /**
+     * +Y offset
+     */
+    UP,
+
+    /**
+     * -Z offset
+     */
+    NORTH,
+
+    /**
+     * +Z offset
+     */
+    SOUTH,
+
+    /**
+     * -X offset
+     */
+    WEST,
+
+    /**
+     * +X offset
+     */
+    EAST;
 }

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

@@ -1,98 +0,0 @@
-package io.github.retrooper.packetevents.enums;
-
-import org.bukkit.Bukkit;
-
-/**
- * @author retrooper
- */
-public enum ServerVersion {
-    v_1_7_10, v_1_8, v_1_8_3, v_1_8_8, v_1_9, v_1_9_4, v_1_10, v_1_11, v_1_12, v_1_13, v_1_13_2, v_1_14, v_1_15, v_1_16_1,
-    ERROR, EMPTY;
-
-    private static final ServerVersion[] reversedValues;
-    private static final String nmsVersionSuffix = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
-    private static ServerVersion cachedVersion;
-
-    static {
-        reversedValues = reverse(values());
-    }
-
-    private static ServerVersion getVers() {
-        for (final ServerVersion val : reversedValues) {
-            String valName = val.name().substring(2).replace("_", ".");
-            if (Bukkit.getBukkitVersion().contains(valName)) {
-                return val;
-            }
-        }
-        return ERROR;
-    }
-
-    public static ServerVersion getVersion() {
-        if (cachedVersion == null) {
-            cachedVersion = getVers();
-        }
-        return cachedVersion;
-    }
-
-    private static ServerVersion[] reverse(final ServerVersion[] arr) {
-        ServerVersion[] array = arr.clone();
-        if (array == null) {
-            return null;
-        }
-        int i = 0;
-        int j = array.length - 1;
-        ServerVersion tmp;
-        while (j > i) {
-            tmp = array[j];
-            array[j] = array[i];
-            array[i] = tmp;
-            j--;
-            i++;
-        }
-        return array;
-    }
-
-    public static String getNmsSuffix() {
-        return nmsVersionSuffix;
-    }
-
-    public static String getNMSDirectory() {
-        return "net.minecraft.server." + nmsVersionSuffix;
-    }
-
-    public static String getOBCDirectory() {
-        return "org.bukkit.craftbukkit." + getNmsSuffix();
-    }
-
-    /**
-     * Returns if the current version is more up to date than the argument passed version
-     *
-     * @param version
-     * @return
-     */
-    public boolean isHigherThan(final ServerVersion version) {
-        if (this == version) return false;
-        return !isLowerThan(version);
-    }
-
-    /**
-     * Returns if the current version is more outdated than the argument passed version
-     *
-     * @param version
-     * @return
-     */
-    public boolean isLowerThan(final ServerVersion version) {
-        if (version == this) return false;
-        final int len = values().length;
-        for (byte i = 0; i < len; i++) {
-            final ServerVersion v = values()[i];
-            if (v == this) {
-                return true;
-            } else if (v == version) {
-                return false;
-            }
-        }
-        return false;
-    }
-
-}

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

@@ -1,32 +0,0 @@
-package io.github.retrooper.packetevents.enums;
-
-public enum SystemOS {
-    WINDOWS, MACOS, LINUX, OTHER;
-
-    private static SystemOS value;
-
-    private static SystemOS getOS() {
-        final String os = System.getProperty("os.name");
-        for (final String osName : getOperatingSystemNames()) {
-            if (os.toLowerCase().contains(osName.toLowerCase())) {
-                return SystemOS.valueOf(osName);
-            }
-        }
-        return OTHER;
-    }
-
-    public static SystemOS getOperatingSystem() {
-        if (value == null) {
-            value = getOS();
-        }
-        return value;
-    }
-
-    public static String[] getOperatingSystemNames() {
-        final String[] arr = new String[values().length - 1];
-        for (int i = 0; i < values().length - 1; i++) {
-            arr[i] = values()[i].name();
-        }
-        return arr;
-    }
-}

src/main/java/io/github/retrooper/packetevents/enums/minecraft/EntityAnimationType.java

@@ -1,19 +0,0 @@
-package io.github.retrooper.packetevents.enums.minecraft;
-
-public enum EntityAnimationType {
-    SWING_MAIN_ARM, DAMAGE, LEAVE_BED, SWING_OFFHAND, CRITICAL_EFFECT, MAGIC_CRITICAL_EFFECT;
-
-    public static final EntityAnimationType get(final int i) {
-        return values()[i];
-    }
-
-    public final int getIndex() {
-        for (int i = 0; i < values().length; i++) {
-            final EntityAnimationType curType = values()[0];
-            if (curType == this) {
-                return i;
-            }
-        }
-        return -1;
-    }
-}

src/main/java/io/github/retrooper/packetevents/enums/minecraft/EntityUseAction.java

@@ -1,9 +0,0 @@
-package io.github.retrooper.packetevents.enums.minecraft;
-
-public enum EntityUseAction {
-    INTERACT, INTERACT_AT, ATTACK, INVALID;
-
-    public static EntityUseAction get(final int i) {
-        return values()[i];
-    }
-}

src/main/java/io/github/retrooper/packetevents/enums/minecraft/Hand.java

@@ -1,6 +0,0 @@
-package io.github.retrooper.packetevents.enums.minecraft;
-
-public enum Hand {
-    MAIN_HAND,
-    OFF_HAND
-}

src/main/java/io/github/retrooper/packetevents/enums/minecraft/PlayerAction.java

@@ -1,59 +0,0 @@
-package io.github.retrooper.packetevents.enums.minecraft;
-
-public enum PlayerAction {
-    START_SNEAKING,
-
-    STOP_SNEAKING,
-
-    STOP_SLEEPING,
-
-    START_SPRINTING,
-
-    STOP_SPRINTING,
-
-    START_RIDING_JUMP,
-
-    STOP_RIDING_JUMP,
-
-    OPEN_INVENTORY,
-
-    START_FALL_FLYING;
-
-    public static PlayerAction get(final int i) {
-        return values()[i];
-    }
-
-    public int getIndex() {
-        for (int i = 0; i < values().length; i++) {
-            final PlayerAction action = values()[i];
-            if (action == this) {
-                return i;
-            }
-        }
-        return -1;
-    }
-
-    public enum UpdatedPlayerAction {
-        PRESS_SHIFT_KEY, RELEASE_SHIFT_KEY, STOP_SLEEPING, START_SPRINTING, STOP_SPRINTING, START_RIDING_JUMP, STOP_RIDING_JUMP, OPEN_INVENTORY, START_FALL_FLYING;
-
-        public static UpdatedPlayerAction get(final int index) {
-            for (int i = 0; i < index + 1; i++) {
-                final UpdatedPlayerAction action = values()[i];
-                if (i == index) {
-                    return action;
-                }
-            }
-            return null;
-        }
-
-        public int getIndex() {
-            for (int i = 0; i < values().length; i++) {
-                final UpdatedPlayerAction action = values()[i];
-                if (action == this) {
-                    return i;
-                }
-            }
-            return -1;
-        }
-    }
-}

src/main/java/io/github/retrooper/packetevents/enums/minecraft/PlayerDigType.java

@@ -1,26 +0,0 @@
-package io.github.retrooper.packetevents.enums.minecraft;
-
-public enum PlayerDigType {
-
-    START_DESTROY_BLOCK,
-
-    ABORT_DESTROY_BLOCK,
-
-    STOP_DESTROY_BLOCK,
-
-    DROP_ALL_ITEMS,
-
-    DROP_ITEM,
-
-    RELEASE_USE_ITEM,
-
-    SWAP_HELD_ITEMS,
-
-    SWAP_ITEM_WITH_OFFHAND,
-
-    WRONG_PACKET;
-
-    public static PlayerDigType get(final int i) {
-        return values()[i];
-    }
-}

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

@@ -1,17 +1,43 @@
+/*
+ * 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;
 
 
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
 
-public class PacketEvent {
-    protected static ServerVersion version = PacketEvents.getAPI().getServerUtilities().getServerVersion();
-    private long timestamp = PacketEvents.getAPI().currentMillis();
+/**
+ * An event in the PacketEvents EventManager system.
+ */
+public abstract class PacketEvent {
+    public static ServerVersion version;
+    private long timestamp = System.currentTimeMillis();
 
     /**
      * Timestamp of the packet
      *
-     * @return
+     * @return timestamp in milliseconds
      */
     public long getTimestamp() {
         return timestamp;
@@ -20,4 +46,4 @@ public class PacketEvent {
     public void setTimestamp(long timestamp) {
         this.timestamp = timestamp;
     }
-}
+}

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

@@ -1,4 +1,32 @@
+/*
+ * 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;
 
+/**
+ * A Packet listener.
+ * Implement this interface in your listeners.
+ */
 public interface PacketListener {
 }

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

@@ -0,0 +1,39 @@
+/*
+ * 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.annotation;
+
+import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+
+public @interface PacketHandler {
+    byte priority() default PacketEventPriority.NORMAL;
+}

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

@@ -0,0 +1,56 @@
+/*
+ * 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.eventtypes;
+
+/**
+ * This indicates that it is possible to cancel an event,
+ * which should result in cancelling the planned action.
+ */
+public interface CancellableEvent {
+
+    /**
+     * Has the event been cancelled?
+     * @return is event cancelled
+     */
+    boolean isCancelled();
+
+    /**
+     * Cancel or proceed with the event.
+     * @param val
+     */
+    void setCancelled(boolean val);
+
+    /**
+     * Cancel the event.
+     * You can achieve the same result by just using {@link #setCancelled(boolean)}
+     */
+    void cancel();
+
+    /**
+     * Uncancel the event.
+     * You can achieve the same result by just using {@link #setCancelled(boolean)}
+     */
+    void uncancel();
+}

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

@@ -0,0 +1,37 @@
+/*
+ * 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.eventtypes;
+
+import org.bukkit.entity.Player;
+
+/**
+ * Event having to do with a player.
+ */
+public interface PlayerEvent {
+    /**
+     * Associated player.
+     */
+    Player getPlayer();
+}

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

@@ -1,35 +0,0 @@
-package io.github.retrooper.packetevents.event.impl;
-
-import io.github.retrooper.packetevents.event.PacketEvent;
-import org.bukkit.Location;
-import org.bukkit.entity.Player;
-import org.bukkit.event.player.PlayerMoveEvent;
-
-public final class BukkitMoveEvent extends PacketEvent {
-    private final Player player;
-    private final Location to, from;
-
-    public BukkitMoveEvent(final Player player, final Location to, final Location from) {
-        this.player = player;
-        this.to = to;
-        this.from = from;
-    }
-
-    public BukkitMoveEvent(final PlayerMoveEvent e) {
-        this.player = e.getPlayer();
-        this.to = e.getTo();
-        this.from = e.getFrom();
-    }
-
-    public Player getPlayer() {
-        return player;
-    }
-
-    public Location getFrom() {
-        return from;
-    }
-
-    public Location getTo() {
-        return to;
-    }
-}

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

@@ -0,0 +1,96 @@
+/*
+ * 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.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+
+/**
+ * This event is called when we receive a login packet.
+ */
+public class PacketLoginEvent extends PacketEvent implements CancellableEvent {
+    private final Object channel;
+    private final Object packet;
+    private boolean cancelled;
+
+    public PacketLoginEvent(final Object channel, final Object packet) {
+        this.channel = channel;
+        this.packet = packet;
+    }
+
+    public Object getChannel() {
+        return channel;
+    }
+
+    /**
+     * Get the packet's name (NMS packet class simple name).
+     * The class simple name is cached.
+     *
+     * @return Name of the packet
+     */
+    public String getPacketName() {
+        return ClassUtil.getClassSimpleName(packet.getClass());
+    }
+
+    /**
+     * Get the raw packet object
+     *
+     * @return packet object
+     */
+    public Object getNMSPacket() {
+        return packet;
+    }
+
+    /**
+     * Get the ID of the packet
+     *
+     * @return packet id
+     */
+    public byte getPacketId() {
+        return PacketType.Login.packetIds.getOrDefault(packet.getClass(), (byte) -1);
+    }
+
+    @Override
+    public void cancel() {
+        cancelled = true;
+    }
+
+    @Override
+    public void uncancel() {
+        cancelled = false;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean value) {
+        cancelled = value;
+    }
+}

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

@@ -1,85 +1,101 @@
+/*
+ * 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.impl;
 
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.packet.PacketType;
+import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
 import org.bukkit.entity.Player;
 
-public final class PacketReceiveEvent extends PacketEvent {
+/**
+ * This event is called each time a packet is received from a client.
+ */
+public final class PacketReceiveEvent extends PacketEvent implements CancellableEvent, PlayerEvent {
     private final Player player;
-    private final String name;
     private final Object packet;
     private boolean cancelled;
 
-    public PacketReceiveEvent(final Player player, final String packetName, final Object packet) {
+    public PacketReceiveEvent(final Player player, final Object packet) {
         this.player = player;
-        this.name = packetName;
         this.packet = packet;
     }
 
     /**
-     * Get the player sending the packet
-     *
-     * @return
+     * Get the packet sender
+     * @return player
      */
+    @Override
     public Player getPlayer() {
-        return this.player;
+        return player;
     }
 
     /**
-     * Get the packet's name (NMS packet class simple name)
-     *
-     * @return
+     * Get the packet's name (NMS packet class simple name).
+     * The class simple name is cached.
+     * @return Name of the packet
      */
     public String getPacketName() {
-        return this.name;
+        return ClassUtil.getClassSimpleName(packet.getClass());
     }
 
     /**
-     * Get the NMS packet object
-     *
+     * Get the raw packet object
      * @return packet object
      */
     public Object getNMSPacket() {
-        return this.packet;
-    }
-
-    /**
-     * Get the class of the NMS packet object
-     *
-     * @return packet object class
-     */
-    public Class<?> getNMSPacketClass() {
-        return getNMSPacket().getClass();
+        return packet;
     }
 
     /**
      * Get the ID of the packet
-     *
      * @return packet id
      */
-    public int getPacketId() {
-        Integer id = PacketType.Client.packetIds.get(getNMSPacketClass());
-        if (id == null) {
-            return -1;
-        }
-        return id;
+    public byte getPacketId() {
+        return PacketType.Client.packetIds.getOrDefault(packet.getClass(), (byte) -1);
     }
 
-    /**
-     * Returns if the packet has been cancelled
-     *
-     * @return cancelled
-     */
+    @Override
+    public void cancel() {
+        cancelled = true;
+    }
+
+    @Override
+    public void uncancel() {
+        cancelled = false;
+    }
+
+    @Override
     public boolean isCancelled() {
         return cancelled;
     }
 
-    /**
-     * Cancel the packet
-     *
-     * @param cancelled
-     */
-    public void setCancelled(boolean cancelled) {
-        this.cancelled = cancelled;
+    @Override
+    public void setCancelled(boolean value) {
+        cancelled = value;
     }
+
 }

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

@@ -1,30 +1,62 @@
+/*
+ * 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.impl;
 
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.packet.PacketType;
+import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
 import org.bukkit.entity.Player;
 
-
-public final class PacketSendEvent extends PacketEvent {
+/**
+ * This event is called each time the server sends a packet to the client.
+ */
+public final class PacketSendEvent extends PacketEvent implements CancellableEvent, PlayerEvent {
     private final Player player;
-    private final String name;
     private final Object packet;
     private boolean cancelled;
 
-    public PacketSendEvent(final Player player, final String packetName, final Object packet) {
+    public PacketSendEvent(final Player player, final Object packet) {
         this.player = player;
-        this.name = packetName;
         this.packet = packet;
         this.cancelled = false;
     }
 
-
+    @Override
     public Player getPlayer() {
-        return this.player;
+        return player;
     }
 
+    /**
+     * Get the packet's name (NMS packet class simple name).
+     * The class simple name is cached.
+     * @return Name of the packet
+     */
     public String getPacketName() {
-        return this.name;
+        return ClassUtil.getClassSimpleName(packet.getClass());
     }
 
     /**
@@ -32,13 +64,8 @@ public final class PacketSendEvent extends PacketEvent {
      *
      * @return packet id
      */
-    public int getPacketId() {
-        Integer id =
-                PacketType.Server.packetIds.get(getNMSPacketClass());
-        if (id == null) {
-            return -1;
-        }
-        return id;
+    public byte getPacketId() {
+        return PacketType.Server.packetIds.getOrDefault(packet.getClass(), (byte) -1);
     }
 
     /**
@@ -47,24 +74,27 @@ public final class PacketSendEvent extends PacketEvent {
      * @return packet object
      */
     public Object getNMSPacket() {
-        return this.packet;
+        return packet;
     }
 
-    /**
-     * Get the class of the NMS packet object
-     *
-     * @return packet object class
-     */
-    public Class<?> getNMSPacketClass() {
-        return getNMSPacket().getClass();
+    @Override
+    public void cancel() {
+        cancelled = true;
     }
 
+    @Override
+    public void uncancel() {
+        cancelled = false;
+    }
+
+    @Override
     public boolean isCancelled() {
         return cancelled;
     }
 
-    public void setCancelled(boolean cancelled) {
-        this.cancelled = cancelled;
+    @Override
+    public void setCancelled(boolean value) {
+        cancelled = value;
     }
 }
 

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

@@ -0,0 +1,93 @@
+/*
+ * 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.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+
+public class PacketStatusEvent extends PacketEvent implements CancellableEvent {
+    private final Object channel;
+    private final Object packet;
+    private boolean cancelled;
+
+    public PacketStatusEvent(final Object channel, final Object packet) {
+        this.channel = channel;
+        this.packet = packet;
+    }
+
+    public Object getChannel() {
+        return channel;
+    }
+
+    /**
+     * Get the packet's name (NMS packet class simple name).
+     * The class simple name is cached.
+     *
+     * @return Name of the packet
+     */
+    public String getPacketName() {
+        return ClassUtil.getClassSimpleName(packet.getClass());
+    }
+
+    /**
+     * Get the raw packet object
+     *
+     * @return packet object
+     */
+    public Object getNMSPacket() {
+        return packet;
+    }
+
+    /**
+     * Get the ID of the packet
+     *
+     * @return packet id
+     */
+    public byte getPacketId() {
+        return PacketType.Status.packetIds.getOrDefault(packet.getClass(), (byte) -1);
+    }
+
+    @Override
+    public void cancel() {
+        cancelled = true;
+    }
+
+    @Override
+    public void uncancel() {
+        cancelled = false;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean value) {
+        cancelled = value;
+    }
+}

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

@@ -0,0 +1,78 @@
+/*
+ * 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.impl;
+
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
+import org.bukkit.entity.Player;
+
+/**
+ * This event is called each time you eject a player.
+ */
+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) {
+        this.player = player;
+        this.async = isAsync;
+    }
+
+    public PlayerEjectEvent(final Player player) {
+        this.player = player;
+        this.async = true; //default value
+    }
+
+    @Override
+    public void cancel() {
+        cancelled = true;
+    }
+
+    @Override
+    public void uncancel() {
+        cancelled = false;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean value) {
+        cancelled = value;
+    }
+
+    @Override
+    public Player getPlayer() {
+        return player;
+    }
+
+    public boolean isAsync() {
+        return async;
+    }
+}

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

@@ -1,37 +1,77 @@
+/*
+ * 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.impl;
 
-import io.github.retrooper.packetevents.enums.ClientVersion;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
 import io.github.retrooper.packetevents.event.PacketEvent;
-import io.github.retrooper.packetevents.utils.api.VersionLookupUtils;
+import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
 import org.bukkit.entity.Player;
 
-public final class PlayerInjectEvent extends PacketEvent {
+/**
+ * This event is called each time you inject a player.
+ */
+public final class PlayerInjectEvent extends PacketEvent implements CancellableEvent, PlayerEvent {
     private final Player player;
-    private final ClientVersion clientVersion;
+    private final boolean async;
     private boolean cancelled;
 
     public PlayerInjectEvent(final Player player) {
-        this.player = player;
-        this.clientVersion = ClientVersion.fromProtocolVersion(VersionLookupUtils.getProtocolVersion(player));
+        this(player, false);
     }
 
+    public PlayerInjectEvent(final Player player, boolean isAsync) {
+        this.player= player;
+        this.async = isAsync;
+    }
+
+    @Override
+    public void cancel() {
+        cancelled = true;
+    }
+
+    @Override
+    public void uncancel() {
+        cancelled = false;
+    }
+
+    @Override
     public boolean isCancelled() {
         return cancelled;
     }
 
-    public void setCancelled(boolean cancelled) {
-        this.cancelled = cancelled;
-    }
-
-    public void cancel() {
-        setCancelled(true);
-    }
-
-    public ClientVersion getClientVersion() {
-        return clientVersion;
+    @Override
+    public void setCancelled(boolean value) {
+        cancelled = value;
     }
 
+    @Override
     public Player getPlayer() {
         return player;
     }
+
+    public boolean isAsync() {
+        return async;
+    }
 }

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

@@ -1,29 +0,0 @@
-package io.github.retrooper.packetevents.event.impl;
-
-import io.github.retrooper.packetevents.event.PacketEvent;
-import org.bukkit.entity.Player;
-
-public final class PlayerUninjectEvent extends PacketEvent {
-    private final Player player;
-    private boolean cancelled;
-
-    public PlayerUninjectEvent(final Player player) {
-        this.player = player;
-    }
-
-    public void cancel() {
-        setCancelled(true);
-    }
-
-    public boolean isCancelled() {
-        return this.cancelled;
-    }
-
-    public void setCancelled(final boolean val) {
-        this.cancelled = val;
-    }
-
-    public Player getPlayer() {
-        return player;
-    }
-}

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

@@ -0,0 +1,75 @@
+/*
+ * 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.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+import org.bukkit.entity.Player;
+
+public class PostPacketReceiveEvent extends PacketEvent implements PlayerEvent {
+    private final Player player;
+    private final Object packet;
+
+    public PostPacketReceiveEvent(final Player player, final Object packet) {
+        this.player = player;
+        this.packet = packet;
+    }
+
+    /**
+     * Get the packet sender
+     * @return player
+     */
+    @Override
+    public Player getPlayer() {
+        return player;
+    }
+
+    /**
+     * Get the packet's name (NMS packet class simple name).
+     * The class simple name is cached.
+     * @return Name of the packet
+     */
+    public String getPacketName() {
+        return ClassUtil.getClassSimpleName(packet.getClass());
+    }
+
+    /**
+     * Get the raw packet object
+     * @return packet object
+     */
+    public Object getNMSPacket() {
+        return packet;
+    }
+
+    /**
+     * Get the ID of the packet
+     * @return packet id
+     */
+    public byte getPacketId() {
+        return PacketType.Client.packetIds.getOrDefault(packet.getClass(), (byte) -1);
+    }
+}

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

@@ -0,0 +1,75 @@
+/*
+ * 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.impl;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.eventtypes.PlayerEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+import org.bukkit.entity.Player;
+
+public class PostPacketSendEvent extends PacketEvent implements PlayerEvent {
+    private final Player player;
+    private final Object packet;
+
+    public PostPacketSendEvent(final Player player, final Object packet) {
+        this.player = player;
+        this.packet = packet;
+    }
+
+    /**
+     * Get the packet sender
+     * @return player
+     */
+    @Override
+    public Player getPlayer() {
+        return player;
+    }
+
+    /**
+     * Get the packet's name (NMS packet class simple name).
+     * The class simple name is cached.
+     * @return Name of the packet
+     */
+    public String getPacketName() {
+        return ClassUtil.getClassSimpleName(packet.getClass());
+    }
+
+    /**
+     * Get the raw packet object
+     * @return packet object
+     */
+    public Object getNMSPacket() {
+        return packet;
+    }
+
+    /**
+     * Get the ID of the packet
+     * @return packet id
+     */
+    public byte getPacketId() {
+        return PacketType.Server.packetIds.getOrDefault(packet.getClass(), (byte) -1);
+    }
+}

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

@@ -1,29 +0,0 @@
-package io.github.retrooper.packetevents.event.impl;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.PacketEvent;
-
-public final class ServerTickEvent extends PacketEvent {
-    private final int tick;
-    private final double tps;
-
-    public ServerTickEvent(final int tick, final long timestamp) {
-        this.tick = tick;
-        setTimestamp(timestamp);
-        this.tps = PacketEvents.getAPI().getServerUtilities().getCurrentServerTPS();
-    }
-
-    public ServerTickEvent(final int tick) {
-        this.tick = tick;
-        this.tps = PacketEvents.getAPI().getServerUtilities().getCurrentServerTPS();
-    }
-
-
-    public int getCurrentTick() {
-        return tick;
-    }
-
-    public double getCurrentServerTPS() {
-        return tps;
-    }
-}

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

@@ -1,98 +1,122 @@
+/*
+ * 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.annotations.PacketHandler;
-import io.github.retrooper.packetevents.annotations.data.EventSynchronization;
 import io.github.retrooper.packetevents.event.PacketEvent;
 import io.github.retrooper.packetevents.event.PacketListener;
-import org.bukkit.Bukkit;
+import io.github.retrooper.packetevents.event.annotation.PacketHandler;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.event.impl.*;
+import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
+import io.github.retrooper.packetevents.utils.protocollib.ProtocolLibAPIListener;
+import io.github.retrooper.packetevents.utils.protocollib.ProtocolLibUtils;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentLinkedQueue;
 
 public final class EventManager {
-    private final ExecutorService executorService;
-    private final HashMap<PacketListener, List<Method>> registeredMethods = new HashMap<PacketListener, List<Method>>();
-
-    public EventManager(final int threadCount) {
-        executorService = Executors.newFixedThreadPool(threadCount);
-    }
-
-    public EventManager() {
-        this(Runtime.getRuntime().availableProcessors());
-    }
-
+    private final Map<PacketListener, List<Method>> staticRegisteredMethods = new HashMap<>();
     public void callEvent(final PacketEvent e) {
-        Integer i = 0;
-        for (final PacketListener listener : registeredMethods.keySet()) {
-            //Annotated methods
-            final List<Method> methods = registeredMethods.get(listener);
-            for (final Method method : methods) {
-                final Class<?> parameterType = method.getParameterTypes()[0];
+        //STATIC LISTENERS
+        for (final PacketListener listener : staticRegisteredMethods.keySet()) {
+            List<Method> methods = staticRegisteredMethods.get(listener);
+            final boolean[] isCancelled = {false};
+            final byte[] eventPriority = {PacketEventPriority.LOWEST};
+            for (Method method : methods) {
+                Class<?> parameterType = method.getParameterTypes()[0];
                 if (parameterType.equals(PacketEvent.class)
                         || parameterType.isInstance(e)) {
-                    final PacketHandler annotation = method.getAnnotation(PacketHandler.class);
-                    final Runnable invokeMethod = new Runnable() {
-                        @Override
-                        public void run() {
-                            try {
-                                method.invoke(listener, e);
-                            } catch (IllegalAccessException | InvocationTargetException ex) {
-                                ex.printStackTrace();
-                            }
+
+                    PacketHandler annotation = method.getAnnotation(PacketHandler.class);
+                    try {
+                        method.invoke(listener, e);
+                    } catch (IllegalAccessException | InvocationTargetException ex) {
+                        ex.printStackTrace();
+                    }
+                    if (e instanceof CancellableEvent) {
+                        CancellableEvent ce = (CancellableEvent) e;
+                        if (annotation.priority() >= eventPriority[0]) {
+                            eventPriority[0] = annotation.priority();
+                            isCancelled[0] = ce.isCancelled();
                         }
-                    };
-                    if (annotation.synchronization() == EventSynchronization.FORCE_ASYNC) {
-                        executorService.execute(invokeMethod);
-                    } else if (annotation.synchronization() == EventSynchronization.FORCE_SYNC) {
-                        Bukkit.getScheduler().runTask(PacketEvents.getPlugin(), invokeMethod);
-                    } else {
-                        invokeMethod.run();
                     }
                 }
             }
         }
     }
 
-    public void registerListener(final PacketListener e) {
-        final List<Method> methods = new ArrayList<Method>();
-        for (final Method m : e.getClass().getMethods()) {
+    public void registerListener(final PacketListener listener) {
+        final List<Method> methods = new ArrayList<>();
+        for (final Method m : listener.getClass().getDeclaredMethods()) {
+            if (!m.isAccessible()) {
+                m.setAccessible(true);
+            }
             if (m.isAnnotationPresent(PacketHandler.class)
                     && m.getParameterTypes().length == 1) {
                 methods.add(m);
             }
         }
+
         if (!methods.isEmpty()) {
-            registeredMethods.put(e, methods);
+            if (ProtocolLibUtils.isAvailable()
+                    && PacketEvents.getSettings().shouldUseProtocolLibIfAvailable()) {
+                ProtocolLibAPIListener.registerProtocolLibListener(listener, methods);
+            } else {
+                staticRegisteredMethods.put(listener, methods);
+            }
         }
     }
 
     public void registerListeners(final PacketListener... listeners) {
-        for(final PacketListener listener : listeners) {
+        for (final PacketListener listener : listeners) {
             registerListener(listener);
         }
     }
 
     public void unregisterListener(final PacketListener e) {
-        registeredMethods.remove(e);
+        staticRegisteredMethods.remove(e);
     }
 
     public void unregisterListeners(final PacketListener... listeners) {
-        for(final PacketListener listener : listeners) {
+        for (final PacketListener listener : listeners) {
             unregisterListener(listener);
         }
     }
 
     public void unregisterAllListeners() {
-        registeredMethods.clear();
+        staticRegisteredMethods.clear();
     }
 
     public boolean isRegistered(final PacketListener listener) {
-        return registeredMethods.containsKey(listener);
+        return staticRegisteredMethods.containsKey(listener);
     }
 }

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

@@ -0,0 +1,34 @@
+/*
+ * 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.priority;
+
+public interface PacketEventPriority {
+    byte LOWEST = 0;
+    byte LOW = 1;
+    byte NORMAL = 2;
+    byte HIGH = 3;
+    byte HIGHEST = 4;
+    byte MONITOR = 5;
+}

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

@@ -1,11 +1,43 @@
+/*
+ * 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.example;
 
 import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.event.annotation.PacketHandler;
+import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
+import io.github.retrooper.packetevents.event.impl.PlayerEjectEvent;
+import io.github.retrooper.packetevents.event.impl.PlayerInjectEvent;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.packetwrappers.in.chat.WrappedPacketInChat;
+import io.github.retrooper.packetevents.packetwrappers.out.helditemslot.WrappedPacketOutHeldItemSlot;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+import org.bukkit.Bukkit;
 import org.bukkit.plugin.java.JavaPlugin;
 
-import static io.github.retrooper.packetevents.PacketEvents.getAPI;
-
-public class MainExample extends JavaPlugin {
+public class MainExample extends JavaPlugin implements PacketListener {
 
     @Override
     public void onLoad() {
@@ -14,8 +46,11 @@ public class MainExample extends JavaPlugin {
 
     @Override
     public void onEnable() {
-        PacketEvents.start(this);
-        getAPI().getServerTickTask().cancel();
+        PacketEvents.getSettings().injectAsync(true).ejectAsync(true).
+                backupServerVersion(ServerVersion.v_1_7_10).useProtocolLibIfAvailable(true).
+                checkForUpdates(true).injectEarly(true).packetHandlingThreadCount(1);
+        PacketEvents.getAPI().getEventManager().registerListener(this);
+        PacketEvents.init(this);
     }
 
     @Override

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

@@ -0,0 +1,37 @@
+/*
+ * 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.exceptions;
+
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+
+public class WrapperFieldNotFoundException extends RuntimeException{
+    public WrapperFieldNotFoundException(String message) {
+        super(message);
+    }
+
+    public WrapperFieldNotFoundException(Class<?> packetClass, Class<?> type, int index) {
+        this("PacketEvents failed to find a " + ClassUtil.getClassSimpleName(type) + " indexed " + index + " by its type in the " + packetClass.getName() + " class!");
+    }
+}

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

@@ -1,70 +0,0 @@
-package io.github.retrooper.packetevents.handler;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
-import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
-import io.github.retrooper.packetevents.event.impl.PlayerInjectEvent;
-import io.github.retrooper.packetevents.event.impl.PlayerUninjectEvent;
-import org.bukkit.entity.Player;
-
-import java.util.concurrent.Future;
-
-public class NettyPacketHandler {
-    public static final String handlerName = "packet_handler";
-    private static boolean v1_7_nettyMode = false;
-
-    static {
-        try {
-            Class.forName("io.netty.channel.Channel");
-        } catch (ClassNotFoundException e) {
-            v1_7_nettyMode = true;
-        }
-    }
-
-    public static void injectPlayer(final Player player) {
-        final PlayerInjectEvent injectEvent = new PlayerInjectEvent(player);
-        PacketEvents.getAPI().getEventManager().callEvent(injectEvent);
-        if (!injectEvent.isCancelled()) {
-            if (v1_7_nettyMode) {
-                NettyPacketHandler_7.injectPlayer(player);
-            } else {
-                NettyPacketHandler_8.injectPlayer(player);
-            }
-        }
-    }
-
-    public static Future<?> uninjectPlayer(final Player player) {
-        final PlayerUninjectEvent uninjectEvent = new PlayerUninjectEvent(player);
-        PacketEvents.getAPI().getEventManager().callEvent(uninjectEvent);
-        if (!uninjectEvent.isCancelled()) {
-            if (v1_7_nettyMode) {
-                return NettyPacketHandler_7.uninjectPlayer(player);
-            } else {
-                return NettyPacketHandler_8.uninjectPlayer(player);
-            }
-        }
-        return null;
-    }
-
-    public static Object write(final Player sender, final Object packet) {
-        final String packetName = packet.getClass().getSimpleName();
-        final PacketSendEvent packetSendEvent = new PacketSendEvent(sender, packetName, packet);
-        PacketEvents.getAPI().getEventManager().callEvent(packetSendEvent);
-        if (!packetSendEvent.isCancelled()) {
-            return packet;
-        }
-        return null;
-    }
-
-    public static Object read(final Player receiver, final Object packet) {
-        final String packetName = packet.getClass().getSimpleName();
-        final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(receiver, packetName, packet);
-        PacketEvents.getAPI().getEventManager().callEvent(packetReceiveEvent);
-        if (!packetReceiveEvent.isCancelled()) {
-            return packet;
-        }
-        return null;
-    }
-
-
-}

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

@@ -1,44 +0,0 @@
-package io.github.retrooper.packetevents.handler;
-
-import io.github.retrooper.packetevents.utils.NMSUtils;
-import net.minecraft.util.io.netty.channel.*;
-import org.bukkit.entity.Player;
-
-import java.util.concurrent.Future;
-
-final class NettyPacketHandler_7 {
-
-    public static void injectPlayer(final Player player) {
-        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-                Object packet = NettyPacketHandler.read(player, msg);
-                if (packet == null) {
-                    return;
-                }
-                super.channelRead(ctx, msg);
-            }
-
-            @Override
-            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
-                Object packet = NettyPacketHandler.write(player, msg);
-                if (packet == null) {
-                    return;
-                }
-                super.write(ctx, msg, promise);
-            }
-        };
-        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
-        pipeline.addBefore(NettyPacketHandler.handlerName, player.getName(), channelDuplexHandler);
-    }
-
-    public static Future<?> uninjectPlayer(final Player player) {
-        final Channel channel = (Channel) NMSUtils.getChannel(player);
-        return channel.eventLoop().submit(new Runnable() {
-            @Override
-            public void run() {
-                channel.pipeline().remove(player.getName());
-            }
-        });
-    }
-}

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

@@ -1,47 +0,0 @@
-package io.github.retrooper.packetevents.handler;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-import io.netty.channel.*;
-import org.bukkit.entity.Player;
-
-import java.util.concurrent.Future;
-
-final class NettyPacketHandler_8 {
-    private static final ServerVersion version = PacketEvents.getAPI().getServerUtilities().getServerVersion();
-
-    public static void injectPlayer(final Player player) {
-        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-                Object packet = NettyPacketHandler.read(player, msg);
-                if (packet == null) {
-                    return;
-                }
-                super.channelRead(ctx, msg);
-            }
-
-            @Override
-            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
-                Object packet = NettyPacketHandler.write(player, msg);
-                if (packet == null) {
-                    return;
-                }
-                super.write(ctx, msg, promise);
-            }
-        };
-        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
-        pipeline.addBefore(NettyPacketHandler.handlerName, player.getName(), channelDuplexHandler);
-    }
-
-    public static Future<?> uninjectPlayer(final Player player) {
-        final Channel channel = (Channel) NMSUtils.getChannel(player);
-        return channel.eventLoop().submit(new Runnable() {
-            @Override
-            public void run() {
-                channel.pipeline().remove(player.getName());
-            }
-        });
-    }
-}

src/main/java/io/github/retrooper/packetevents/packetmanager/PacketManager.java

@@ -0,0 +1,299 @@
+/*
+ * 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.packetmanager;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.event.impl.*;
+import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
+import io.github.retrooper.packetevents.packetmanager.tinyprotocol.TinyProtocol;
+import io.github.retrooper.packetevents.packettype.PacketType;
+import io.github.retrooper.packetevents.packetwrappers.login.in.WrappedPacketLoginHandshake;
+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 io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+import java.util.HashMap;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class PacketManager {
+
+    private static final AtomicInteger handlerID = new AtomicInteger();
+    private final int handlerNumber = handlerID.getAndIncrement();
+    private final Plugin plugin;
+    private final boolean tinyProtocolMode;
+    public final TinyProtocol tinyProtocol;
+    public final NettyPacketManager nettyProtocol;
+    private final HashMap<UUID, Long> keepAliveMap = new HashMap<>();
+
+    public PacketManager(Plugin plugin, boolean tinyProtocolMode) {
+        this.plugin = plugin;
+        this.tinyProtocolMode = tinyProtocolMode;
+        if (tinyProtocolMode) {
+            tinyProtocol = new TinyProtocol(plugin);
+            nettyProtocol = null;
+        } else {
+            tinyProtocol = null;
+            nettyProtocol = new NettyPacketManager(plugin);
+        }
+    }
+
+    public void injectPlayer(Player player) {
+        if (PacketEvents.getSettings().shouldInjectAsync()) {
+            injectPlayerAsync(player);
+        } else {
+            injectPlayerSync(player);
+        }
+    }
+
+    public void ejectPlayer(Player player) {
+        if (PacketEvents.getSettings().shouldEjectAsync()) {
+            ejectPlayerAsync(player);
+        } else {
+            ejectPlayerSync(player);
+        }
+    }
+
+    public void injectPlayerSync(Player player) {
+        PlayerInjectEvent injectEvent = new PlayerInjectEvent(player, false);
+        PacketEvents.getAPI().getEventManager().callEvent(injectEvent);
+        if (!injectEvent.isCancelled()) {
+            if (tinyProtocolMode) {
+                tinyProtocol.injectPlayer(player);
+            } else {
+                nettyProtocol.injectPlayer(player);
+            }
+        }
+    }
+
+    public void injectPlayerAsync(Player player) {
+        PlayerInjectEvent injectEvent = new PlayerInjectEvent(player, true);
+        PacketEvents.getAPI().getEventManager().callEvent(injectEvent);
+        if (!injectEvent.isCancelled()) {
+            if (tinyProtocolMode) {
+                tinyProtocol.injectPlayerAsync(player);
+            } else {
+                nettyProtocol.injectPlayerAsync(player);
+            }
+        }
+    }
+
+    public void ejectPlayerSync(Player player) {
+        PlayerEjectEvent ejectEvent = new PlayerEjectEvent(player, false);
+        PacketEvents.getAPI().getEventManager().callEvent(ejectEvent);
+        if (!ejectEvent.isCancelled()) {
+            keepAliveMap.remove(player.getUniqueId());
+            if (tinyProtocolMode) {
+                tinyProtocol.ejectPlayer(player);
+            } else {
+                nettyProtocol.ejectPlayer(player);
+            }
+        }
+    }
+
+    public void ejectPlayerAsync(Player player) {
+        PlayerEjectEvent ejectEvent = new PlayerEjectEvent(player, true);
+        PacketEvents.getAPI().getEventManager().callEvent(ejectEvent);
+        if (!ejectEvent.isCancelled()) {
+            keepAliveMap.remove(player.getUniqueId());
+            if (tinyProtocolMode) {
+                tinyProtocol.ejectPlayerAsync(player);
+            } else {
+                nettyProtocol.ejectPlayerAsync(player);
+            }
+        }
+    }
+
+    public void ejectChannel(Object channel) {
+        if (!PacketEvents.getSettings().shouldEjectAsync()) {
+            ejectChannelSync(channel);
+        } else {
+            ejectChannelAsync(channel);
+        }
+    }
+
+    public void ejectChannelSync(Object channel) {
+        if (tinyProtocolMode) {
+            tinyProtocol.ejectChannelSync(channel);
+        } else {
+            nettyProtocol.ejectChannelSync(channel);
+        }
+    }
+
+    public void ejectChannelAsync(Object channel) {
+        if (tinyProtocolMode) {
+            tinyProtocol.ejectChannelAsync(channel);
+        } else {
+            nettyProtocol.ejectChannelAsync(channel);
+        }
+    }
+
+    public void sendPacket(Object channel, Object packet) {
+        if (tinyProtocolMode) {
+            tinyProtocol.sendPacket(channel, packet);
+        } else {
+            nettyProtocol.sendPacket(channel, packet);
+        }
+    }
+
+    public boolean canInject(Player player) {
+       return true;
+    }
+
+    public String getNettyHandlerName() {
+        return "pe-" + plugin.getName() + "-" + handlerNumber;
+    }
+
+    public Object read(Player player, Object channel, Object packet) {
+        if (player == null) {
+            String simpleClassName = ClassUtil.getClassSimpleName(packet.getClass());
+            //Status packet
+            if (simpleClassName.startsWith("PacketS")) {
+                final PacketStatusEvent packetStatusEvent = new PacketStatusEvent(channel, packet);
+                PacketEvents.getAPI().getEventManager().callEvent(packetStatusEvent);
+                interceptStatus(packetStatusEvent);
+                if (packetStatusEvent.isCancelled()) {
+                    packet = null;
+                }
+            } else {
+                //Login packet
+                final PacketLoginEvent packetLoginEvent = new PacketLoginEvent(channel, packet);
+                PacketEvents.getAPI().getEventManager().callEvent(packetLoginEvent);
+                interceptLogin(packetLoginEvent);
+                if (packetLoginEvent.isCancelled()) {
+                    packet = null;
+                }
+            }
+        } else {
+            final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(player, packet);
+            PacketEvents.getAPI().getEventManager().callEvent(packetReceiveEvent);
+            interceptRead(packetReceiveEvent);
+            if (packetReceiveEvent.isCancelled()) {
+                packet = null;
+            }
+        }
+        return packet;
+    }
+
+    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 PacketStatusEvent packetStatusEvent = new PacketStatusEvent(channel, packet);
+                PacketEvents.getAPI().getEventManager().callEvent(packetStatusEvent);
+                interceptStatus(packetStatusEvent);
+                if (packetStatusEvent.isCancelled()) {
+                    packet = null;
+                }
+            }
+            //Login packet
+            else {
+                final PacketLoginEvent packetLoginEvent = new PacketLoginEvent(channel, packet);
+                PacketEvents.getAPI().getEventManager().callEvent(packetLoginEvent);
+                interceptLogin(packetLoginEvent);
+                if (packetLoginEvent.isCancelled()) {
+                    packet = null;
+                }
+            }
+        } else {
+            final PacketSendEvent packetSendEvent = new PacketSendEvent(player, packet);
+            PacketEvents.getAPI().getEventManager().callEvent(packetSendEvent);
+            interceptWrite(packetSendEvent);
+            if (packetSendEvent.isCancelled()) {
+                packet = null;
+            }
+        }
+        return packet;
+    }
+
+    public void postRead(Player player, Object packet) {
+        switch (ClassUtil.getClassSimpleName(packet.getClass())) {
+            case "PacketHandshakingInSetProtocol":
+            case "PacketLoginInCustomPayload":
+            case "PacketLoginInStart":
+            case "PacketLoginInEncryptionBegin":
+            case "PacketStatusInPing":
+                break;
+            default:
+                PacketEvents.getAPI().getEventManager().callEvent(new PostPacketReceiveEvent(player, packet));
+                break;
+        }
+    }
+
+    public void postWrite(Player player, Object packet) {
+        switch (ClassUtil.getClassSimpleName(packet.getClass())) {
+            case "PacketLoginOutDisconnect":
+            case "PacketLoginOutEncryptionBegin":
+            case "PacketLoginOutSetCompression":
+            case "PacketLoginOutSuccess":
+            case "PacketStatusOutPong":
+            case "PacketStatusOutServerInfo":
+                break;
+            default:
+                PacketEvents.getAPI().getEventManager().callEvent(new PostPacketSendEvent(player, packet));
+                break;
+        }
+    }
+
+
+    private void interceptRead(PacketReceiveEvent event) {
+        if (event.getPacketId() == PacketType.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.getAPI().getPlayerUtils().getSmoothedPing(event.getPlayer()) * 3) + ping) / 4;
+            PacketEvents.getAPI().getPlayerUtils().playerPingMap.put(uuid, (short) ping);
+            PacketEvents.getAPI().getPlayerUtils().playerSmoothedPingMap.put(uuid, (short) smoothedPing);
+        }
+    }
+
+    private void interceptWrite(PacketSendEvent event) {
+        if (event.getPacketId() == PacketType.Server.KEEP_ALIVE) {
+            keepAliveMap.put(event.getPlayer().getUniqueId(), event.getTimestamp());
+        }
+    }
+
+    private void interceptLogin(PacketLoginEvent event) {
+        if (event.getPacketId() == PacketType.Login.HANDSHAKE) {
+            if (!VersionLookupUtils.isDependencyAvailable()) {
+                WrappedPacketLoginHandshake handshake = new WrappedPacketLoginHandshake(event.getNMSPacket());
+                int protocolVersion = handshake.getProtocolVersion();
+                ClientVersion version = ClientVersion.getClientVersion(protocolVersion);
+                PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.put(event.getChannel(), version);
+            }
+        }
+    }
+
+    private void interceptStatus(PacketStatusEvent event) {
+
+    }
+
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/netty/NettyPacketManager.java

@@ -0,0 +1,156 @@
+/*
+ * 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.packetmanager.netty;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class NettyPacketManager {
+    public static final boolean v1_7_nettyMode;
+
+    static {
+        boolean v1_7_nettyMode1;
+        try {
+            Class.forName("net.minecraft.util.io.netty.channel.Channel");
+            v1_7_nettyMode1 = true;
+        } catch (ClassNotFoundException e) {
+            v1_7_nettyMode1 = false;
+        }
+        v1_7_nettyMode = v1_7_nettyMode1;
+    }
+
+    private final Object npm;
+
+    public NettyPacketManager(Plugin plugin) {
+        if (v1_7_nettyMode) {
+            npm = new NettyPacketManager_7();
+        } else {
+            npm = new NettyPacketManager_8();
+        }
+    }
+
+    /**
+     * Synchronously inject a player
+     *
+     * @param player Target player to inject
+     */
+    public void injectPlayer(final Player player) {
+        if (v1_7_nettyMode) {
+            NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+            npm_7.injectPlayer(player);
+        } else {
+            NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+            npm_8.injectPlayer(player);
+        }
+    }
+
+    /**
+     * Asynchronously inject a player
+     *
+     * @param player
+     */
+    public void injectPlayerAsync(final Player player) {
+        //Redundant channel variable created just so we can cache it synchronously.
+        Object channel = NMSUtils.getChannel(player);
+        PacketEvents.packetHandlingExecutorService.execute(() -> {
+            if (v1_7_nettyMode) {
+                NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+                npm_7.injectPlayer(player);
+            } else {
+                NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+                npm_8.injectPlayer(player);
+            }
+        });
+    }
+
+    /**
+     * Synchronously eject a player.
+     *
+     * @param player
+     */
+    public void ejectPlayer(final Player player) {
+        if (v1_7_nettyMode) {
+            NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+            npm_7.ejectPlayer(player);
+        } else {
+            NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+            npm_8.ejectPlayer(player);
+        }
+    }
+
+    /**
+     * Asynchronously eject a player
+     *
+     * @param player
+     */
+    public void ejectPlayerAsync(final Player player) {
+        PacketEvents.packetHandlingExecutorService.execute(() -> {
+            if (v1_7_nettyMode) {
+                NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+                npm_7.ejectPlayer(player);
+            } else {
+                NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+                npm_8.ejectPlayer(player);
+            }
+        });
+    }
+
+    public void ejectChannelSync(Object channel) {
+        if (v1_7_nettyMode) {
+            NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+            npm_7.ejectChannel(channel);
+        } else {
+            NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+            npm_8.ejectChannel(channel);
+        }
+    }
+
+    public void ejectChannelAsync(Object channel) {
+        PacketEvents.packetHandlingExecutorService.execute(() -> {
+            if (v1_7_nettyMode) {
+                NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+                npm_7.ejectChannel(channel);
+            } else {
+                NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+                npm_8.ejectChannel(channel);
+            }
+        });
+    }
+
+    public void sendPacket(Object channel, Object packet) {
+        if (v1_7_nettyMode) {
+            NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
+            npm_7.sendPacket(channel, packet);
+        } else {
+            NettyPacketManager_8 npm_8 = (NettyPacketManager_8) npm;
+            npm_8.sendPacket(channel, packet);
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/netty/NettyPacketManager_7.java

@@ -0,0 +1,85 @@
+/*
+ * 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.packetmanager.netty;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+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.ChannelPipeline;
+import net.minecraft.util.io.netty.channel.ChannelPromise;
+import org.bukkit.entity.Player;
+
+final class NettyPacketManager_7 {
+    NettyPacketManager_7() {
+
+    }
+    /**
+     * Inject a player using 1.7.10's netty import location
+     * @param player
+     */
+    public void injectPlayer(final Player player) {
+        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Object packet = PacketEvents.getAPI().packetManager.read(player, ctx.channel(), msg);
+                if (packet == null) {
+                    return;
+                }
+                super.channelRead(ctx, msg);
+                PacketEvents.getAPI().packetManager.postRead(player, packet);
+            }
+
+            @Override
+            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                Object packet = PacketEvents.getAPI().packetManager.write(player, ctx.channel(),msg);
+                if (packet == null) {
+                    return;
+                }
+                super.write(ctx, msg, promise);
+                PacketEvents.getAPI().packetManager.postWrite(player, packet);
+            }
+        };
+        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
+        pipeline.addBefore("packet_handler", PacketEvents.getAPI().packetManager.getNettyHandlerName(), channelDuplexHandler);
+    }
+
+    public void ejectPlayer(Player player) {
+        Channel channel = (Channel) NMSUtils.getChannel(player);
+        assert channel != null;
+        ejectChannel(channel);
+    }
+
+   public void ejectChannel(Object ch) {
+        Channel channel = (Channel) ch;
+        channel.pipeline().remove(PacketEvents.getAPI().packetManager.getNettyHandlerName());
+   }
+
+    public void sendPacket(Object rawChannel, Object packet) {
+        Channel channel = (Channel) rawChannel;
+        channel.pipeline().writeAndFlush(packet);
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/netty/NettyPacketManager_8.java

@@ -0,0 +1,89 @@
+/*
+ * 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.packetmanager.netty;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.ChannelPromise;
+import org.bukkit.entity.Player;
+
+final class NettyPacketManager_8 {
+    NettyPacketManager_8() {
+
+    }
+    /**
+     * Inject a player with 1.8+ netty import location.
+     * @param player
+     */
+    public void injectPlayer(final Player player) {
+        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Object packet = PacketEvents.getAPI().packetManager.read(player, ctx.channel(),msg);
+                if (packet == null) {
+                    return;
+                }
+                super.channelRead(ctx, msg);
+                PacketEvents.getAPI().packetManager.postRead(player, packet);
+            }
+
+            @Override
+            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                Object packet = PacketEvents.getAPI().packetManager.write(player, ctx.channel(),msg);
+                if (packet == null) {
+                    return;
+                }
+                super.write(ctx, msg, promise);
+                PacketEvents.getAPI().packetManager.postWrite(player, packet);
+            }
+        };
+        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
+        pipeline.addBefore("packet_handler", PacketEvents.getAPI().packetManager.getNettyHandlerName(), channelDuplexHandler);
+    }
+
+    /**
+     * Eject a player with 1.8+ netty import location.
+     * @param player
+     */
+    public void ejectPlayer(final Player player) {
+        final Channel channel = (Channel) NMSUtils.getChannel(player);
+        assert channel != null;
+        ejectChannel(channel);
+    }
+
+    public void ejectChannel(Object channel) {
+        Channel ch = (Channel)channel;
+        ch.pipeline().remove(PacketEvents.getAPI().packetManager.getNettyHandlerName());
+    }
+
+    public void sendPacket(Object rawChannel, Object packet) {
+        Channel channel = (Channel)rawChannel;
+        channel.pipeline().writeAndFlush(packet);
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/tinyprotocol/Reflection.java

@@ -0,0 +1,376 @@
+package io.github.retrooper.packetevents.packetmanager.tinyprotocol;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.bukkit.Bukkit;
+
+/**
+ * An utility class that simplifies reflection in Bukkit plugins.
+ *
+ * @author Kristian
+ */
+public final class Reflection {
+    /**
+     * An interface for invoking a specific constructor.
+     */
+    public interface ConstructorInvoker {
+        /**
+         * Invoke a constructor for a specific class.
+         *
+         * @param arguments - the arguments to pass to the constructor.
+         * @return The constructed object.
+         */
+        Object invoke(Object... arguments);
+    }
+
+    /**
+     * An interface for invoking a specific method.
+     */
+    public interface MethodInvoker {
+        /**
+         * Invoke a method on a specific target object.
+         *
+         * @param target - the target object, or NULL for a static method.
+         * @param arguments - the arguments to pass to the method.
+         * @return The return value, or NULL if is void.
+         */
+        Object invoke(Object target, Object... arguments);
+    }
+
+    /**
+     * An interface for retrieving the field content.
+     *
+     * @param <T> - field type.
+     */
+    public interface FieldAccessor<T> {
+        /**
+         * Retrieve the content of a field.
+         *
+         * @param target - the target object, or NULL for a static field.
+         * @return The value of the field.
+         */
+        T get(Object target);
+
+        /**
+         * Set the content of a field.
+         *
+         * @param target - the target object, or NULL for a static field.
+         * @param value - the new value of the field.
+         */
+        void set(Object target, Object value);
+
+        /**
+         * Determine if the given object has this field.
+         *
+         * @param target - the object to test.
+         * @return TRUE if it does, FALSE otherwise.
+         */
+        boolean hasField(Object target);
+    }
+
+    // Deduce the net.minecraft.server.v* package
+    private static String OBC_PREFIX = Bukkit.getServer().getClass().getPackage().getName();
+    private static String NMS_PREFIX = OBC_PREFIX.replace("org.bukkit.craftbukkit", "net.minecraft.server");
+    private static String VERSION = OBC_PREFIX.replace("org.bukkit.craftbukkit", "").replace(".", "");
+
+    // Variable replacement
+    private static Pattern MATCH_VARIABLE = Pattern.compile("\\{([^\\}]+)\\}");
+
+    private Reflection() {
+        // Seal class
+    }
+
+    /**
+     * Retrieve a field accessor for a specific field type and name.
+     *
+     * @param target - the target type.
+     * @param name - the name of the field, or NULL to ignore.
+     * @param fieldType - a compatible field type.
+     * @return The field accessor.
+     */
+    public static <T> FieldAccessor<T> getField(Class<?> target, String name, Class<T> fieldType) {
+        return getField(target, name, fieldType, 0);
+    }
+
+    /**
+     * Retrieve a field accessor for a specific field type and name.
+     *
+     * @param className - lookup name of the class, see {@link #getClass(String)}.
+     * @param name - the name of the field, or NULL to ignore.
+     * @param fieldType - a compatible field type.
+     * @return The field accessor.
+     */
+    public static <T> FieldAccessor<T> getField(String className, String name, Class<T> fieldType) {
+        return getField(getClass(className), name, fieldType, 0);
+    }
+
+    /**
+     * Retrieve a field accessor for a specific field type and name.
+     *
+     * @param target - the target type.
+     * @param fieldType - a compatible field type.
+     * @param index - the number of compatible fields to skip.
+     * @return The field accessor.
+     */
+    public static <T> FieldAccessor<T> getField(Class<?> target, Class<T> fieldType, int index) {
+        return getField(target, null, fieldType, index);
+    }
+
+    /**
+     * Retrieve a field accessor for a specific field type and name.
+     *
+     * @param className - lookup name of the class, see {@link #getClass(String)}.
+     * @param fieldType - a compatible field type.
+     * @param index - the number of compatible fields to skip.
+     * @return The field accessor.
+     */
+    public static <T> FieldAccessor<T> getField(String className, Class<T> fieldType, int index) {
+        return getField(getClass(className), fieldType, index);
+    }
+
+    // Common method
+    private static <T> FieldAccessor<T> getField(Class<?> target, String name, Class<T> fieldType, int index) {
+        for (final Field field : target.getDeclaredFields()) {
+            if ((name == null || field.getName().equals(name)) && fieldType.isAssignableFrom(field.getType()) && index-- <= 0) {
+                field.setAccessible(true);
+
+                // A function for retrieving a specific field value
+                return new FieldAccessor<T>() {
+
+                    @Override
+                    @SuppressWarnings("unchecked")
+                    public T get(Object target) {
+                        try {
+                            return (T) field.get(target);
+                        } catch (IllegalAccessException e) {
+                            throw new RuntimeException("Cannot access reflection.", e);
+                        }
+                    }
+
+                    @Override
+                    public void set(Object target, Object value) {
+                        try {
+                            field.set(target, value);
+                        } catch (IllegalAccessException e) {
+                            throw new RuntimeException("Cannot access reflection.", e);
+                        }
+                    }
+
+                    @Override
+                    public boolean hasField(Object target) {
+                        // target instanceof DeclaringClass
+                        return field.getDeclaringClass().isAssignableFrom(target.getClass());
+                    }
+                };
+            }
+        }
+
+        // Search in parent classes
+        if (target.getSuperclass() != null)
+            return getField(target.getSuperclass(), name, fieldType, index);
+
+        throw new IllegalArgumentException("Cannot find field with type " + fieldType);
+    }
+
+    /**
+     * Search for the first publicly and privately defined method of the given name and parameter count.
+     *
+     * @param className - lookup name of the class, see {@link #getClass(String)}.
+     * @param methodName - the method name, or NULL to skip.
+     * @param params - the expected parameters.
+     * @return An object that invokes this specific method.
+     * @throws IllegalStateException If we cannot find this method.
+     */
+    public static MethodInvoker getMethod(String className, String methodName, Class<?>... params) {
+        return getTypedMethod(getClass(className), methodName, null, params);
+    }
+
+    /**
+     * Search for the first publicly and privately defined method of the given name and parameter count.
+     *
+     * @param clazz - a class to start with.
+     * @param methodName - the method name, or NULL to skip.
+     * @param params - the expected parameters.
+     * @return An object that invokes this specific method.
+     * @throws IllegalStateException If we cannot find this method.
+     */
+    public static MethodInvoker getMethod(Class<?> clazz, String methodName, Class<?>... params) {
+        return getTypedMethod(clazz, methodName, null, params);
+    }
+
+    /**
+     * Search for the first publicly and privately defined method of the given name and parameter count.
+     *
+     * @param clazz - a class to start with.
+     * @param methodName - the method name, or NULL to skip.
+     * @param returnType - the expected return type, or NULL to ignore.
+     * @param params - the expected parameters.
+     * @return An object that invokes this specific method.
+     * @throws IllegalStateException If we cannot find this method.
+     */
+    public static MethodInvoker getTypedMethod(Class<?> clazz, String methodName, Class<?> returnType, Class<?>... params) {
+        for (final Method method : clazz.getDeclaredMethods()) {
+            if ((methodName == null || method.getName().equals(methodName))
+                    && (returnType == null || method.getReturnType().equals(returnType))
+                    && Arrays.equals(method.getParameterTypes(), params)) {
+                method.setAccessible(true);
+
+                return new MethodInvoker() {
+
+                    @Override
+                    public Object invoke(Object target, Object... arguments) {
+                        try {
+                            return method.invoke(target, arguments);
+                        } catch (Exception e) {
+                            throw new RuntimeException("Cannot invoke method " + method, e);
+                        }
+                    }
+
+                };
+            }
+        }
+
+        // Search in every superclass
+        if (clazz.getSuperclass() != null)
+            return getMethod(clazz.getSuperclass(), methodName, params);
+
+        throw new IllegalStateException(String.format("Unable to find method %s (%s).", methodName, Arrays.asList(params)));
+    }
+
+    /**
+     * Search for the first publically and privately defined constructor of the given name and parameter count.
+     *
+     * @param className - lookup name of the class, see {@link #getClass(String)}.
+     * @param params - the expected parameters.
+     * @return An object that invokes this constructor.
+     * @throws IllegalStateException If we cannot find this method.
+     */
+    public static ConstructorInvoker getConstructor(String className, Class<?>... params) {
+        return getConstructor(getClass(className), params);
+    }
+
+    /**
+     * Search for the first publically and privately defined constructor of the given name and parameter count.
+     *
+     * @param clazz - a class to start with.
+     * @param params - the expected parameters.
+     * @return An object that invokes this constructor.
+     * @throws IllegalStateException If we cannot find this method.
+     */
+    public static ConstructorInvoker getConstructor(Class<?> clazz, Class<?>... params) {
+        for (final Constructor<?> constructor : clazz.getDeclaredConstructors()) {
+            if (Arrays.equals(constructor.getParameterTypes(), params)) {
+                constructor.setAccessible(true);
+
+                return new ConstructorInvoker() {
+
+                    @Override
+                    public Object invoke(Object... arguments) {
+                        try {
+                            return constructor.newInstance(arguments);
+                        } catch (Exception e) {
+                            throw new RuntimeException("Cannot invoke constructor " + constructor, e);
+                        }
+                    }
+
+                };
+            }
+        }
+
+        throw new IllegalStateException(String.format("Unable to find constructor for %s (%s).", clazz, Arrays.asList(params)));
+    }
+
+    /**
+     * Retrieve a class from its full name, without knowing its type on compile time.
+     * <p>
+     * This is useful when looking up fields by a NMS or OBC type.
+     * <p>
+     *
+     * See {@link #getClass()} for more information.
+     * @param lookupName - the class name with variables.
+     * @return The class.
+     */
+    public static Class<Object> getUntypedClass(String lookupName) {
+        @SuppressWarnings({ "rawtypes", "unchecked" })
+        Class<Object> clazz = (Class) getClass(lookupName);
+        return clazz;
+    }
+
+
+    public static Class<?> getClass(String lookupName) {
+        return getCanonicalClass(expandVariables(lookupName));
+    }
+
+    /**
+     * Retrieve a class in the net.minecraft.server.VERSION.* package.
+     *
+     * @param name - the name of the class, excluding the package.
+     * @throws IllegalArgumentException If the class doesn't exist.
+     */
+    public static Class<?> getMinecraftClass(String name) {
+        return getCanonicalClass(NMS_PREFIX + "." + name);
+    }
+
+    /**
+     * Retrieve a class in the org.bukkit.craftbukkit.VERSION.* package.
+     *
+     * @param name - the name of the class, excluding the package.
+     * @throws IllegalArgumentException If the class doesn't exist.
+     */
+    public static Class<?> getCraftBukkitClass(String name) {
+        return getCanonicalClass(OBC_PREFIX + "." + name);
+    }
+
+    /**
+     * Retrieve a class by its canonical name.
+     *
+     * @param canonicalName - the canonical name.
+     * @return The class.
+     */
+    private static Class<?> getCanonicalClass(String canonicalName) {
+        try {
+            return Class.forName(canonicalName);
+        } catch (ClassNotFoundException e) {
+            throw new IllegalArgumentException("Cannot find " + canonicalName, e);
+        }
+    }
+
+    /**
+     * Expand variables such as "{nms}" and "{obc}" to their corresponding packages.
+     *
+     * @param name - the full name of the class.
+     * @return The expanded string.
+     */
+    private static String expandVariables(String name) {
+        StringBuffer output = new StringBuffer();
+        Matcher matcher = MATCH_VARIABLE.matcher(name);
+
+        while (matcher.find()) {
+            String variable = matcher.group(1);
+            String replacement = "";
+
+            // Expand all detected variables
+            if ("nms".equalsIgnoreCase(variable))
+                replacement = NMS_PREFIX;
+            else if ("obc".equalsIgnoreCase(variable))
+                replacement = OBC_PREFIX;
+            else if ("version".equalsIgnoreCase(variable))
+                replacement = VERSION;
+            else
+                throw new IllegalArgumentException("Unknown variable: " + variable);
+
+            // Assume the expanded variables are all packages, and append a dot
+            if (replacement.length() > 0 && matcher.end() < name.length() && name.charAt(matcher.end()) != '.')
+                replacement += ".";
+            matcher.appendReplacement(output, Matcher.quoteReplacement(replacement));
+        }
+
+        matcher.appendTail(output);
+        return output.toString();
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/tinyprotocol/TinyProtocol.java

@@ -0,0 +1,125 @@
+/*
+ * 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.packetmanager.tinyprotocol;
+
+import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+public class TinyProtocol {
+    private final Object tinyProt;
+
+    public TinyProtocol(Plugin plugin) {
+        if (NettyPacketManager.v1_7_nettyMode) {
+            tinyProt = new TinyProtocol7(plugin);
+        } else {
+            tinyProt = new TinyProtocol8(plugin);
+        }
+    }
+
+    public void injectPlayer(Player player) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.injectPlayer(player);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.injectPlayer(player);
+        }
+    }
+
+    public void injectPlayerAsync(Player player) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.injectPlayerAsync(player);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.injectPlayerAsync(player);
+        }
+    }
+
+    public void ejectPlayer(Player player) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.uninjectPlayer(player);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.uninjectPlayer(player);
+        }
+    }
+
+    public void ejectPlayerAsync(Player player) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.uninjectPlayerAsync(player);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.uninjectPlayerAsync(player);
+        }
+    }
+
+    public void ejectChannelSync(Object channel) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.ejectChannelSync(channel);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.ejectChannelSync(channel);
+        }
+    }
+
+    public void ejectChannelAsync(Object channel) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.ejectChannelAsync(channel);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.ejectChannelAsync(channel);
+        }
+    }
+
+    public void sendPacket(Object channel, Object packet) {
+        if (!NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            tp8.sendPacket(channel, packet);
+        } else {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            tp7.sendPacket(channel, packet);
+        }
+    }
+
+    public Object getChannel(Player player) {
+        if (NettyPacketManager.v1_7_nettyMode) {
+            TinyProtocol7 tp7 = (TinyProtocol7) tinyProt;
+            return tp7.getChannel(player);
+        } else {
+            TinyProtocol8 tp8 = (TinyProtocol8) tinyProt;
+            return tp8.getChannel(player);
+        }
+    }
+
+    public void unregisterChannelHandler() {
+
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/tinyprotocol/TinyProtocol7.java

@@ -0,0 +1,507 @@
+package io.github.retrooper.packetevents.packetmanager.tinyprotocol;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
+import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.FieldAccessor;
+import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.MethodInvoker;
+import net.minecraft.util.com.google.common.collect.Lists;
+import net.minecraft.util.com.google.common.collect.MapMaker;
+import net.minecraft.util.com.mojang.authlib.GameProfile;
+import net.minecraft.util.io.netty.channel.*;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.Listener;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import java.util.*;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.logging.Level;
+
+/**
+ * Represents a very tiny alternative to ProtocolLib.
+ * <p>
+ * It now supports intercepting packets during login and status ping (such as OUT_SERVER_PING)!
+ *
+ * @author Kristian
+ */
+
+//BROKEN: NPEs when player joins while server is starting, and using PlayerJoinEvent instead will cause NPE for protocol version lookup.
+//Protocol version number lookup method from DeprecatedLuke's version of TinyProtocol
+public class TinyProtocol7 {
+    private static final AtomicInteger ID = new AtomicInteger();
+
+    // Used in order to lookup a channel
+    private static final MethodInvoker getPlayerHandle = Reflection.getMethod("{obc}.entity.CraftPlayer", "getHandle");
+    private static final FieldAccessor<Object> getConnection = Reflection.getField("{nms}.EntityPlayer", "playerConnection", Object.class);
+    private static final FieldAccessor<Object> getManager = Reflection.getField("{nms}.PlayerConnection", "networkManager", Object.class);
+    private static final FieldAccessor<Channel> getChannel = Reflection.getField("{nms}.NetworkManager", Channel.class, 0);
+
+    // Looking up ServerConnection
+    private static final Class<Object> minecraftServerClass = Reflection.getUntypedClass("{nms}.MinecraftServer");
+    private static final Class<Object> serverConnectionClass = Reflection.getUntypedClass("{nms}.ServerConnection");
+    private static final FieldAccessor<Object> getMinecraftServer = Reflection.getField("{obc}.CraftServer", minecraftServerClass, 0);
+    private static final FieldAccessor<Object> getServerConnection = Reflection.getField(minecraftServerClass, serverConnectionClass, 0);
+    private static final MethodInvoker getNetworkMarkers = Reflection.getTypedMethod(serverConnectionClass, null, List.class, serverConnectionClass);
+
+    // Packets we have to intercept
+    private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getMinecraftClass("PacketLoginInStart");
+    private static final Class<?> PACKET_HANDSHAKING_IN_SET_PROTOCOL = Reflection.getMinecraftClass("PacketHandshakingInSetProtocol");
+    private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
+
+    // Speedup channel/protocol lookup
+    private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
+
+    // List of network markers
+    private List<Object> networkManagers;
+
+    // Injected channel handlers
+    private final List<Channel> serverChannels = Lists.newArrayList();
+    private ChannelInboundHandlerAdapter serverChannelHandler;
+    private ChannelInitializer<Channel> beginInitProtocol;
+    private ChannelInitializer<Channel> endInitProtocol;
+
+    // Current handler name
+    private final String handlerName;
+
+    protected volatile boolean closed;
+    protected Plugin plugin;
+
+    /**
+     * Construct a new instance of TinyProtocol, and start intercepting packets for all connected clients and future clients.
+     * <p>
+     * You can construct multiple instances per plugin.
+     *
+     * @param plugin - the plugin.
+     */
+    public TinyProtocol7(final Plugin plugin) {
+        this.plugin = plugin;
+
+        // Compute handler name
+        this.handlerName = getHandlerName();
+
+        try {
+            registerChannelHandler();
+            registerPlayers(plugin);
+        } catch (IllegalArgumentException ex) {
+            // Damn you, late bind
+            plugin.getLogger().info("Delaying server channel injection due to late bind.");
+
+            new BukkitRunnable() {
+                @Override
+                public void run() {
+                    registerChannelHandler();
+                    registerPlayers(plugin);
+                    plugin.getLogger().info("Late bind injection successful.");
+                }
+            }.runTask(plugin);
+        }
+    }
+
+    private void createServerChannelHandler() {
+        // Handle connected channels
+        endInitProtocol = new ChannelInitializer<Channel>() {
+
+            @Override
+            protected void initChannel(Channel channel) throws Exception {
+                try {
+                    // This can take a while, so we need to stop the main thread from interfering
+                    synchronized (networkManagers) {
+                        // Stop injecting channels
+                        if (!closed) {
+                            channel.eventLoop().submit(() -> injectChannelInternal(channel));
+                        }
+                    }
+                } catch (Exception e) {
+                    plugin.getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
+                }
+            }
+
+        };
+
+        // This is executed before Minecraft's channel handler
+        beginInitProtocol = new ChannelInitializer<Channel>() {
+
+            @Override
+            protected void initChannel(Channel channel) throws Exception {
+                channel.pipeline().addLast(endInitProtocol);
+            }
+
+        };
+
+        serverChannelHandler = new ChannelInboundHandlerAdapter() {
+
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Channel channel = (Channel) msg;
+
+                // Prepare to initialize ths channel
+                channel.pipeline().addFirst(beginInitProtocol);
+                ctx.fireChannelRead(msg);
+            }
+
+        };
+    }
+
+
+    @SuppressWarnings("unchecked")
+    private void registerChannelHandler() {
+        Object mcServer = getMinecraftServer.get(Bukkit.getServer());
+        Object serverConnection = getServerConnection.get(mcServer);
+        boolean looking = true;
+
+        // We need to synchronize against this list
+        networkManagers = (List<Object>) getNetworkMarkers.invoke(null, serverConnection);
+        createServerChannelHandler();
+
+        // Find the correct list, or implicitly throw an exception
+        for (int i = 0; looking; i++) {
+            List<Object> list = Reflection.getField(serverConnection.getClass(), List.class, i).get(serverConnection);
+
+            for (Object item : list) {
+                if (!(item instanceof ChannelFuture))
+                    break;
+
+                // Channel future that contains the server connection
+                Channel serverChannel = ((ChannelFuture) item).channel();
+
+                serverChannels.add(serverChannel);
+                serverChannel.pipeline().addFirst(serverChannelHandler);
+                looking = false;
+            }
+        }
+    }
+
+    private void unregisterChannelHandler() {
+        if (serverChannelHandler == null)
+            return;
+
+        for (Channel serverChannel : serverChannels) {
+            final ChannelPipeline pipeline = serverChannel.pipeline();
+
+            // Remove channel handler
+            serverChannel.eventLoop().execute(new Runnable() {
+
+                @Override
+                public void run() {
+                    try {
+                        pipeline.remove(serverChannelHandler);
+                    } catch (NoSuchElementException e) {
+                        // That's fine
+                    }
+                }
+
+            });
+        }
+    }
+
+    private void registerPlayers(Plugin plugin) {
+        for (Player player : plugin.getServer().getOnlinePlayers()) {
+            injectPlayer(player);
+        }
+    }
+
+    /**
+     * Invoked when the server is starting to send a packet to a player.
+     * <p>
+     * Note that this is not executed on the main thread.
+     *
+     * @param receiver - the receiving player, NULL for early login/status packets.
+     * @param channel  - the channel that received the packet. Never NULL.
+     * @param packet   - the packet being sent.
+     * @return The packet to send instead, or NULL to cancel the transmission.
+     */
+    public Object onPacketOutAsync(Player receiver, Channel channel, Object packet) {
+        return PacketEvents.getAPI().packetManager.write(receiver, channel, packet);
+    }
+
+    /**
+     * Invoked when the server has received a packet from a given player.
+     * <p>
+     * Use {@link Channel#remoteAddress()} to get the remote address of the client.
+     *
+     * @param sender  - the player that sent the packet, NULL for early login/status packets.
+     * @param channel - channel that received the packet. Never NULL.
+     * @param packet  - the packet being received.
+     * @return The packet to recieve instead, or NULL to cancel.
+     */
+    public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
+        return PacketEvents.getAPI().packetManager.read(sender, channel, packet);
+    }
+
+    /**
+     * Send a packet to a particular player.
+     * <p>
+     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param player - the destination player.
+     * @param packet - the packet to send.
+     */
+    public void sendPacket(Player player, Object packet) {
+        sendPacket(getChannel(player), packet);
+    }
+
+    /**
+     * Send a packet to a particular client.
+     * <p>
+     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param channel - client identified by a channel.
+     * @param packet  - the packet to send.
+     */
+    public void sendPacket(Channel channel, Object packet) {
+        channel.pipeline().writeAndFlush(packet);
+    }
+
+    public void sendPacket(Object channel, Object packet) {
+        sendPacket((Channel) channel, packet);
+    }
+
+    /**
+     * Pretend that a given packet has been received from a player.
+     * <p>
+     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param player - the player that sent the packet.
+     * @param packet - the packet that will be received by the server.
+     */
+    public void receivePacket(Player player, Object packet) {
+        receivePacket(getChannel(player), packet);
+    }
+
+    /**
+     * Pretend that a given packet has been received from a given client.
+     * <p>
+     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param channel - client identified by a channel.
+     * @param packet  - the packet that will be received by the server.
+     */
+    public void receivePacket(Channel channel, Object packet) {
+        channel.pipeline().context("encoder").fireChannelRead(packet);
+    }
+
+    /**
+     * Retrieve the name of the channel injector, default implementation is "tiny-" + plugin name + "-" + a unique ID.
+     * <p>
+     * Note that this method will only be invoked once. It is no longer necessary to override this to support multiple instances.
+     *
+     * @return A unique channel handler name.
+     */
+    protected String getHandlerName() {
+        return "PacketEvents-" + ID.incrementAndGet();
+    }
+
+    /**
+     * Add a custom channel handler to the given player's channel pipeline, allowing us to intercept sent and received packets.
+     * <p>
+     * This will automatically be called when a player has logged in.
+     *
+     * @param player - the player to inject.
+     */
+    public void injectPlayer(Player player) {
+        injectChannelInternal(getChannel(player)).player = player;
+    }
+
+    public void injectPlayerAsync(Player player) {
+        Channel channel = getChannel(player);
+        injectChannelInternalAsync(channel).player = player;
+    }
+
+    /**
+     * Add a custom channel handler to the given channel.
+     *
+     * @param channel - the channel to inject.
+     */
+    public void injectChannel(Channel channel) {
+        injectChannelInternal(channel);
+    }
+
+    public void injectChannelAsync(Channel channel) {
+        injectChannelInternalAsync(channel);
+    }
+
+    /**
+     * Add a custom channel handler to the given channel.
+     *
+     * @param channel - the channel to inject.
+     * @return The packet interceptor.
+     */
+    private PacketInterceptor injectChannelInternal(Channel channel) {
+        try {
+            PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
+
+            // Inject our packet interceptor
+            if (interceptor == null) {
+                interceptor = new PacketInterceptor();
+                channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
+            }
+
+            return interceptor;
+        } catch (IllegalArgumentException e) {
+            // Try again
+            return (PacketInterceptor) channel.pipeline().get(handlerName);
+        }
+    }
+
+    private PacketInterceptor injectChannelInternalAsync(Channel channel) {
+        try {
+            PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
+
+            // Inject our packet interceptor
+            if (interceptor == null) {
+                interceptor = new PacketInterceptor();
+                final PacketInterceptor pi = interceptor;
+                PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
+                    @Override
+                    public void run() {
+                        channel.pipeline().addBefore("packet_handler", handlerName, pi);
+                    }
+                });
+            }
+
+            return interceptor;
+        } catch (IllegalArgumentException e) {
+            // Try again
+            return (PacketInterceptor) channel.pipeline().get(handlerName);
+        }
+    }
+
+    /**
+     * Retrieve the Netty channel associated with a player. This is cached.
+     *
+     * @param player - the player.
+     * @return The Netty channel.
+     */
+    public Channel getChannel(Player player) {
+        Channel channel = channelLookup.get(player.getName());
+
+        // Lookup channel again
+        if (channel == null) {
+            Object connection = getConnection.get(getPlayerHandle.invoke(player));
+            Object manager = getManager.get(connection);
+
+            channelLookup.put(player.getName(), channel = getChannel.get(manager));
+        }
+
+        return channel;
+    }
+
+    /**
+     * Uninject a specific player.
+     *
+     * @param player - the injected player.
+     */
+    public void uninjectPlayer(Player player) {
+        uninjectChannel(getChannel(player));
+    }
+
+    public void uninjectPlayerAsync(Player player) {
+        Channel channel = getChannel(player);
+        uninjectChannelAsync(channel);
+    }
+
+    public void ejectChannelSync(Object ch) {
+        uninjectChannel((Channel)ch);
+    }
+
+    public void ejectChannelAsync(Object ch) {
+        uninjectChannelAsync((Channel)ch);
+    }
+
+    /**
+     * Uninject a specific channel.
+     * <p>
+     * This will also disable the automatic channel injection that occurs when a player has properly logged in.
+     *
+     * @param channel - the injected channel.
+     */
+    public void uninjectChannel(final Channel channel) {
+        // See ChannelInjector in ProtocolLib, line 590
+        channel.pipeline().remove(handlerName);
+    }
+
+    public void uninjectChannelAsync(Channel channel) {
+        // See ChannelInjector in ProtocolLib, line 590
+        PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
+            @Override
+            public void run() {
+                channel.pipeline().remove(handlerName);
+            }
+        });
+    }
+
+    /**
+     * Determine if the given player has been injected by TinyProtocol.
+     *
+     * @param player - the player.
+     * @return TRUE if it is, FALSE otherwise.
+     */
+    public boolean hasInjected(Player player) {
+        return hasInjected(getChannel(player));
+    }
+
+    /**
+     * Determine if the given channel has been injected by TinyProtocol.
+     *
+     * @param channel - the channel.
+     * @return TRUE if it is, FALSE otherwise.
+     */
+    public boolean hasInjected(Channel channel) {
+        return channel.pipeline().get(handlerName) != null;
+    }
+
+    /**
+     * Cease listening for packets. This is called automatically when your plugin is disabled.
+     */
+
+    /**
+     * Channel handler that is inserted into the player's channel pipeline, allowing us to intercept sent and received packets.
+     *
+     * @author Kristian
+     */
+    private final class PacketInterceptor extends ChannelDuplexHandler {
+        // Updated by the login event
+        public volatile Player player;
+
+        @Override
+        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+            // Intercept channel
+            final Channel channel = ctx.channel();
+            handleLoginStart(channel, msg);
+
+            try {
+                msg = onPacketInAsync(player, channel, msg);
+            } catch (Exception e) {
+                plugin.getLogger().log(Level.SEVERE, "Error in onPacketInAsync().", e);
+            }
+
+            if (msg != null) {
+                super.channelRead(ctx, msg);
+                PacketEvents.getAPI().packetManager.postRead(player, msg);
+            }
+        }
+
+        @Override
+        public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+            try {
+                msg = onPacketOutAsync(player, ctx.channel(), msg);
+            } catch (Exception e) {
+                plugin.getLogger().log(Level.SEVERE, "Error in onPacketOutAsync().", e);
+            }
+
+            if (msg != null) {
+                super.write(ctx, msg, promise);
+                PacketEvents.getAPI().packetManager.postWrite(player, msg);
+            }
+        }
+
+        private void handleLoginStart(Channel channel, Object packet) {
+            if (PACKET_LOGIN_IN_START.isInstance(packet)) {
+                GameProfile profile = getGameProfile.get(packet);
+                channelLookup.put(profile.getName(), channel);
+            }
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetmanager/tinyprotocol/TinyProtocol8.java

@@ -0,0 +1,538 @@
+package io.github.retrooper.packetevents.packetmanager.tinyprotocol;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.MapMaker;
+import com.mojang.authlib.GameProfile;
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
+import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.FieldAccessor;
+import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.MethodInvoker;
+import io.netty.channel.*;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.logging.Level;
+
+/**
+ * Represents a very tiny alternative to ProtocolLib.
+ * <p>
+ * It now supports intercepting packets during login and status ping (such as OUT_SERVER_PING)!
+ *
+ * @author Kristian
+ */
+
+//BROKEN: NPEs when player joins while server is starting, and using PlayerJoinEvent instead will cause NPE for protocol version lookup.
+//Protocol version number lookup method from DeprecatedLuke's version of TinyProtocol
+public class TinyProtocol8 {
+    private static final AtomicInteger ID = new AtomicInteger();
+
+    // Used in order to lookup a channel
+    private static final MethodInvoker getPlayerHandle = Reflection.getMethod("{obc}.entity.CraftPlayer", "getHandle");
+    private static final FieldAccessor<Object> getConnection = Reflection.getField("{nms}.EntityPlayer", "playerConnection", Object.class);
+    private static final FieldAccessor<Object> getManager = Reflection.getField("{nms}.PlayerConnection", "networkManager", Object.class);
+    private static final FieldAccessor<Channel> getChannel = Reflection.getField("{nms}.NetworkManager", Channel.class, 0);
+
+    // Looking up ServerConnection
+    private static final Class<Object> minecraftServerClass = Reflection.getUntypedClass("{nms}.MinecraftServer");
+    private static final Class<Object> serverConnectionClass = Reflection.getUntypedClass("{nms}.ServerConnection");
+    private static final FieldAccessor<Object> getMinecraftServer = Reflection.getField("{obc}.CraftServer", minecraftServerClass, 0);
+    private static final FieldAccessor<Object> getServerConnection = Reflection.getField(minecraftServerClass, serverConnectionClass, 0);
+    private static final MethodInvoker getNetworkMarkers;
+
+    // Packets we have to intercept
+    private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getMinecraftClass("PacketLoginInStart");
+    private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
+
+    static {
+        MethodInvoker tempNetworkMarkers;
+        try {
+            tempNetworkMarkers = Reflection.getTypedMethod(serverConnectionClass, null, List.class, serverConnectionClass);
+        } catch (Exception ex) {
+            tempNetworkMarkers = null;
+        }
+        getNetworkMarkers = tempNetworkMarkers;
+    }
+
+    // Speedup channel/protocol lookup
+    private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
+
+    // List of network markers
+    private List<Object> networkManagers;
+
+    // Injected channel handlers
+    private final List<Channel> serverChannels = Lists.newArrayList();
+    private ChannelInboundHandlerAdapter serverChannelHandler;
+    private ChannelInitializer<Channel> beginInitProtocol;
+    private ChannelInitializer<Channel> endInitProtocol;
+
+    // Current handler name
+    private final String handlerName;
+
+    protected volatile boolean closed;
+    protected Plugin plugin;
+
+    /**
+     * Construct a new instance of TinyProtocol, and start intercepting packets for all connected clients and future clients.
+     * <p>
+     * You can construct multiple instances per plugin.
+     *
+     * @param plugin - the plugin.
+     */
+    public TinyProtocol8(final Plugin plugin) {
+        this.plugin = plugin;
+
+        // Compute handler name
+        this.handlerName = getHandlerName();
+
+        try {
+            registerChannelHandler();
+            registerPlayers(plugin);
+        } catch (IllegalArgumentException ex) {
+            // Damn you, late bind
+            plugin.getLogger().info("Delaying server channel injection due to late bind.");
+
+            new BukkitRunnable() {
+                @Override
+                public void run() {
+                    registerChannelHandler();
+                    registerPlayers(plugin);
+                    plugin.getLogger().info("Late bind injection successful.");
+                }
+            }.runTask(plugin);
+        }
+    }
+
+    private void createServerChannelHandler() {
+        // Handle connected channels
+        endInitProtocol = new ChannelInitializer<Channel>() {
+
+            @Override
+            protected void initChannel(Channel channel) throws Exception {
+                try {
+                    // This can take a while, so we need to stop the main thread from interfering
+                    synchronized (networkManagers) {
+                        // Stop injecting channels
+                        if (!closed) {
+                            channel.eventLoop().submit(() -> injectChannelInternal(channel));
+                        }
+                    }
+                } catch (Exception e) {
+                    plugin.getLogger().log(Level.SEVERE, "Cannot inject incoming channel " + channel, e);
+                }
+            }
+
+        };
+
+        // This is executed before Minecraft's channel handler
+        beginInitProtocol = new ChannelInitializer<Channel>() {
+
+            @Override
+            protected void initChannel(Channel channel) throws Exception {
+                channel.pipeline().addLast(endInitProtocol);
+            }
+
+        };
+
+        serverChannelHandler = new ChannelInboundHandlerAdapter() {
+
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Channel channel = (Channel) msg;
+
+                // Prepare to initialize ths channel
+                channel.pipeline().addFirst(beginInitProtocol);
+                ctx.fireChannelRead(msg);
+            }
+
+        };
+    }
+
+    /**
+     * Register bukkit events.
+     */
+
+    @SuppressWarnings("unchecked")
+    private void registerChannelHandler() {
+        Object mcServer = getMinecraftServer.get(Bukkit.getServer());
+        Object serverConnection = getServerConnection.get(mcServer);
+        boolean looking = true;
+
+        // We need to synchronize against this list
+        if(getNetworkMarkers != null) {
+        networkManagers = (List<Object>) getNetworkMarkers.invoke(null, serverConnection);}
+        else {
+            networkManagers = new ArrayList<>();
+        }
+        createServerChannelHandler();
+
+        // Find the correct list, or implicitly throw an exception
+        for (int i = 0; looking; i++) {
+            List<Object> list = Reflection.getField(serverConnection.getClass(), List.class, i).get(serverConnection);
+
+            for (Object item : list) {
+                if (!(item instanceof ChannelFuture))
+                    break;
+
+                // Channel future that contains the server connection
+                Channel serverChannel = ((ChannelFuture) item).channel();
+
+                serverChannels.add(serverChannel);
+                serverChannel.pipeline().addFirst(serverChannelHandler);
+                looking = false;
+            }
+        }
+    }
+
+    private void unregisterChannelHandler() {
+        if (serverChannelHandler == null)
+            return;
+
+        for (Channel serverChannel : serverChannels) {
+            final ChannelPipeline pipeline = serverChannel.pipeline();
+
+            // Remove channel handler
+            serverChannel.eventLoop().execute(new Runnable() {
+
+                @Override
+                public void run() {
+                    try {
+                        pipeline.remove(serverChannelHandler);
+                    } catch (NoSuchElementException e) {
+                        // That's fine
+                    }
+                }
+
+            });
+        }
+    }
+
+    private void registerPlayers(Plugin plugin) {
+        for (Player player : plugin.getServer().getOnlinePlayers()) {
+            injectPlayer(player);
+        }
+    }
+
+    /**
+     * Invoked when the server is starting to send a packet to a player.
+     * <p>
+     * Note that this is not executed on the main thread.
+     *
+     * @param receiver - the receiving player, NULL for early login/status packets.
+     * @param channel  - the channel that received the packet. Never NULL.
+     * @param packet   - the packet being sent.
+     * @return The packet to send instead, or NULL to cancel the transmission.
+     */
+    public Object onPacketOutAsync(Player receiver, Channel channel, Object packet) {
+        return PacketEvents.getAPI().packetManager.write(receiver, channel, packet);
+    }
+
+    /**
+     * Invoked when the server has received a packet from a given player.
+     * <p>
+     * Use {@link Channel#remoteAddress()} to get the remote address of the client.
+     *
+     * @param sender  - the player that sent the packet, NULL for early login/status packets.
+     * @param channel - channel that received the packet. Never NULL.
+     * @param packet  - the packet being received.
+     * @return The packet to recieve instead, or NULL to cancel.
+     */
+    public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
+        return PacketEvents.getAPI().packetManager.read(sender, channel, packet);
+    }
+
+    /**
+     * Send a packet to a particular player.
+     * <p>
+     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param player - the destination player.
+     * @param packet - the packet to send.
+     */
+    public void sendPacket(Player player, Object packet) {
+        sendPacket(getChannel(player), packet);
+    }
+
+    /**
+     * Send a packet to a particular client.
+     * <p>
+     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param channel - client identified by a channel.
+     * @param packet  - the packet to send.
+     */
+    public void sendPacket(Channel channel, Object packet) {
+        channel.pipeline().writeAndFlush(packet);
+    }
+
+    public void sendPacket(Object channel, Object packet) {
+        sendPacket((Channel) channel, packet);
+    }
+
+    /**
+     * Pretend that a given packet has been received from a player.
+     * <p>
+     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param player - the player that sent the packet.
+     * @param packet - the packet that will be received by the server.
+     */
+    public void receivePacket(Player player, Object packet) {
+        receivePacket(getChannel(player), packet);
+    }
+
+    /**
+     * Pretend that a given packet has been received from a given client.
+     * <p>
+     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
+     *
+     * @param channel - client identified by a channel.
+     * @param packet  - the packet that will be received by the server.
+     */
+    public void receivePacket(Channel channel, Object packet) {
+        channel.pipeline().context("encoder").fireChannelRead(packet);
+    }
+
+    /**
+     * Retrieve the name of the channel injector, default implementation is "tiny-" + plugin name + "-" + a unique ID.
+     * <p>
+     * Note that this method will only be invoked once. It is no longer necessary to override this to support multiple instances.
+     *
+     * @return A unique channel handler name.
+     */
+    protected String getHandlerName() {
+        return "PacketEvents-" + ID.incrementAndGet();
+    }
+
+    /**
+     * Add a custom channel handler to the given player's channel pipeline, allowing us to intercept sent and received packets.
+     * <p>
+     * This will automatically be called when a player has logged in.
+     *
+     * @param player - the player to inject.
+     */
+    public void injectPlayer(Player player) {
+        injectChannelInternal(getChannel(player)).player = player;
+    }
+
+    public void injectPlayerAsync(Player player) {
+        Channel channel = getChannel(player);
+        injectChannelInternalAsync(channel).player = player;
+    }
+
+    /**
+     * Add a custom channel handler to the given channel.
+     *
+     * @param channel - the channel to inject.
+     */
+    public void injectChannel(Channel channel) {
+        injectChannelInternal(channel);
+    }
+
+    public void injectChannelAsync(Channel channel) {
+        injectChannelInternalAsync(channel);
+    }
+
+    /**
+     * Add a custom channel handler to the given channel.
+     *
+     * @param channel - the channel to inject.
+     * @return The packet interceptor.
+     */
+    private PacketInterceptor injectChannelInternal(Channel channel) {
+        try {
+            PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
+
+            // Inject our packet interceptor
+            if (interceptor == null) {
+                interceptor = new PacketInterceptor();
+                channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
+            }
+
+            return interceptor;
+        } catch (IllegalArgumentException e) {
+            // Try again
+            return (PacketInterceptor) channel.pipeline().get(handlerName);
+        }
+    }
+
+    private PacketInterceptor injectChannelInternalAsync(Channel channel) {
+        try {
+            PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
+
+            // Inject our packet interceptor
+            if (interceptor == null) {
+                interceptor = new PacketInterceptor();
+                final PacketInterceptor pi = interceptor;
+                PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
+                    @Override
+                    public void run() {
+                        channel.pipeline().addBefore("packet_handler", handlerName, pi);
+                    }
+                });
+            }
+
+            return interceptor;
+        } catch (IllegalArgumentException e) {
+            // Try again
+            return (PacketInterceptor) channel.pipeline().get(handlerName);
+        }
+    }
+
+    /**
+     * Retrieve the Netty channel associated with a player. This is cached.
+     *
+     * @param player - the player.
+     * @return The Netty channel.
+     */
+    public Channel getChannel(Player player) {
+        Channel channel = channelLookup.get(player.getName());
+
+        // Lookup channel again
+        if (channel == null) {
+            Object connection = getConnection.get(getPlayerHandle.invoke(player));
+            Object manager = getManager.get(connection);
+
+            channelLookup.put(player.getName(), channel = getChannel.get(manager));
+        }
+
+        return channel;
+    }
+
+    /**
+     * Uninject a specific player.
+     *
+     * @param player - the injected player.
+     */
+    public void uninjectPlayer(Player player) {
+        uninjectChannel(getChannel(player));
+    }
+
+    public void uninjectPlayerAsync(Player player) {
+        Channel channel = getChannel(player);
+        uninjectChannelAsync(channel);
+    }
+
+    public void ejectChannelSync(Object ch) {
+        uninjectChannel((Channel) ch);
+    }
+
+    public void ejectChannelAsync(Object ch) {
+        uninjectChannelAsync((Channel) ch);
+    }
+
+    /**
+     * Uninject a specific channel.
+     * <p>
+     * This will also disable the automatic channel injection that occurs when a player has properly logged in.
+     *
+     * @param channel - the injected channel.
+     */
+    public void uninjectChannel(final Channel channel) {
+        // See ChannelInjector in ProtocolLib, line 590
+        channel.pipeline().remove(handlerName);
+    }
+
+    public void uninjectChannelAsync(Channel channel) {
+        // See ChannelInjector in ProtocolLib, line 590
+        PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
+            @Override
+            public void run() {
+                channel.pipeline().remove(handlerName);
+            }
+        });
+
+    }
+
+    /**
+     * Determine if the given player has been injected by TinyProtocol.
+     *
+     * @param player - the player.
+     * @return TRUE if it is, FALSE otherwise.
+     */
+    public boolean hasInjected(Player player) {
+        return hasInjected(getChannel(player));
+    }
+
+    /**
+     * Determine if the given channel has been injected by TinyProtocol.
+     *
+     * @param channel - the channel.
+     * @return TRUE if it is, FALSE otherwise.
+     */
+    public boolean hasInjected(Channel channel) {
+        return channel.pipeline().get(handlerName) != null;
+    }
+
+    /**
+     * Cease listening for packets. This is called automatically when your plugin is disabled.
+     */
+    public final void close() {
+        if (!closed) {
+            closed = true;
+
+            // Remove our handlers
+            for (Player player : plugin.getServer().getOnlinePlayers()) {
+                uninjectPlayer(player);
+            }
+
+            // Clean up Bukkit
+            unregisterChannelHandler();
+        }
+    }
+
+    /**
+     * Channel handler that is inserted into the player's channel pipeline, allowing us to intercept sent and received packets.
+     *
+     * @author Kristian
+     */
+    private final class PacketInterceptor extends ChannelDuplexHandler {
+        // Updated by the login event
+        public volatile Player player;
+
+        @Override
+        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+            // Intercept channel
+            final Channel channel = ctx.channel();
+            handleLoginStart(channel, msg);
+
+            try {
+                msg = onPacketInAsync(player, channel, msg);
+            } catch (Exception e) {
+                plugin.getLogger().log(Level.SEVERE, "Error in onPacketInAsync().", e);
+            }
+
+            if (msg != null) {
+                super.channelRead(ctx, msg);
+                PacketEvents.getAPI().packetManager.postRead(player, msg);
+            }
+        }
+
+        @Override
+        public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+            try {
+                msg = onPacketOutAsync(player, ctx.channel(), msg);
+            } catch (Exception e) {
+                plugin.getLogger().log(Level.SEVERE, "Error in onPacketOutAsync().", e);
+            }
+
+            if (msg != null) {
+                super.write(ctx, msg, promise);
+                PacketEvents.getAPI().packetManager.postWrite(player, msg);
+            }
+        }
+
+        private void handleLoginStart(Channel channel, Object packet) {
+            if (PACKET_LOGIN_IN_START.isInstance(packet)) {
+                GameProfile profile = getGameProfile.get(packet);
+                channelLookup.put(profile.getName(), channel);
+            }
+        }
+    }
+}

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

@@ -1,24 +1,65 @@
-package io.github.retrooper.packetevents.packet;
+/*
+ * 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.packettype;
 
 import java.util.HashMap;
 import java.util.Map;
 
 public class PacketType {
+    public static class Status {
+        public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
+        public static final byte IN_START = 0, PING = 1, PONG = 2, SERVER_INFO = 3;
 
+        public static void init() {
+            packetIds.put(PacketTypeClasses.Status.IN_START, IN_START);
+            packetIds.put(PacketTypeClasses.Status.PING, PING);
+            packetIds.put(PacketTypeClasses.Status.PONG, PONG);
+            packetIds.put(PacketTypeClasses.Status.SERVER_INFO, SERVER_INFO);
+        }
+    }
+    public static class Login {
+        public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
+        public static final byte HANDSHAKE = 0,
+        IN_CUSTOM_PAYLOAD = 1, OUT_CUSTOM_PAYLOAD = 2,IN_START = 3, IN_ENCRYPTION_BEGIN = 4,
+        DISCONNECT = 5, OUT_ENCRYPTION_BEGIN = 6, OUT_SUCCESS = 7;
+
+        public static void init() {
+            packetIds.put(PacketTypeClasses.Login.HANDSHAKE, HANDSHAKE);
+            packetIds.put(PacketTypeClasses.Login.IN_CUSTOM_PAYLOAD, IN_CUSTOM_PAYLOAD);
+            packetIds.put(PacketTypeClasses.Login.OUT_CUSTOM_PAYLOAD, OUT_CUSTOM_PAYLOAD);
+            packetIds.put(PacketTypeClasses.Login.IN_START, IN_START);
+            packetIds.put(PacketTypeClasses.Login.IN_ENCRYPTION_BEGIN, IN_ENCRYPTION_BEGIN);
+            packetIds.put(PacketTypeClasses.Login.DISCONNECT, DISCONNECT);
+            packetIds.put(PacketTypeClasses.Login.OUT_ENCRYPTION_BEGIN, OUT_ENCRYPTION_BEGIN);
+            packetIds.put(PacketTypeClasses.Login.OUT_SUCCESS, OUT_SUCCESS);
+        }
+    }
 
     public static class Client {
-        public static class Util {
-            public static boolean isInstanceOfFlying(final int packetId) {
-                return packetId == FLYING
-                        || packetId == POSITION
-                        || packetId == POSITION_LOOK
-                        || packetId == LOOK;
-            }
-        }
-
-        public static final Map<Class<?>, Integer> packetIds = new HashMap<Class<?>, Integer>();
-
-        public static final int TELEPORT_ACCEPT = 0,
+        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,
@@ -81,11 +122,26 @@ public class PacketType {
             packetIds.put(PacketTypeClasses.Client.USE_ITEM, USE_ITEM);
             packetIds.put(PacketTypeClasses.Client.BLOCK_PLACE, BLOCK_PLACE);
         }
+
+        public static class Util {
+            /**
+             * Is the packet an instance of the PacketPlayInFlying packet?
+             *
+             * @param packetID
+             * @return packetID == FLYING or POSITION or POSITION_LOOK or LOOK
+             */
+            public static boolean isInstanceOfFlying(final byte packetID) {
+                return packetID == FLYING
+                        || packetID == POSITION
+                        || packetID == POSITION_LOOK
+                        || packetID == LOOK;
+            }
+        }
     }
 
     public static class Server {
-        public static final Map<Class<?>, Integer> packetIds = new HashMap<Class<?>, Integer>();
-        public static int SPAWN_ENTITY = 0, SPAWN_ENTITY_EXPERIENCE_ORB = 1, SPAWN_ENTITY_WEATHER = 2, SPAWN_ENTITY_LIVING = 3,
+        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,
@@ -135,6 +191,7 @@ public class PacketType {
             packetIds.put(PacketTypeClasses.Server.WINDOW_ITEMS, WINDOW_ITEMS);
             packetIds.put(PacketTypeClasses.Server.WINDOW_DATA, WINDOW_DATA);
             packetIds.put(PacketTypeClasses.Server.SET_SLOT, SET_SLOT);
+            packetIds.put(PacketTypeClasses.Server.SET_COOLDOWN, SET_COOLDOWN);
             packetIds.put(PacketTypeClasses.Server.CUSTOM_PAYLOAD, CUSTOM_PAYLOAD);
             packetIds.put(PacketTypeClasses.Server.CUSTOM_SOUND_EFFECT, CUSTOM_SOUND_EFFECT);
             packetIds.put(PacketTypeClasses.Server.KICK_DISCONNECT, KICK_DISCONNECT);
@@ -145,6 +202,7 @@ public class PacketType {
             packetIds.put(PacketTypeClasses.Server.OPEN_WINDOW_HORSE, OPEN_WINDOW_HORSE);
             packetIds.put(PacketTypeClasses.Server.KEEP_ALIVE, KEEP_ALIVE);
             packetIds.put(PacketTypeClasses.Server.MAP_CHUNK, MAP_CHUNK);
+            packetIds.put(PacketTypeClasses.Server.WORLD_EVENT, WORLD_EVENT);
             packetIds.put(PacketTypeClasses.Server.WORLD_EVENT, SPAWN_ENTITY);
             packetIds.put(PacketTypeClasses.Server.WORLD_PARTICLES, WORLD_PARTICLES);
             packetIds.put(PacketTypeClasses.Server.LIGHT_UPDATE, LIGHT_UPDATE);
@@ -205,6 +263,19 @@ public class PacketType {
             packetIds.put(PacketTypeClasses.Server.TAGS, TAGS);
             packetIds.put(PacketTypeClasses.Server.MAP_CHUNK_BULK, MAP_CHUNK_BULK);
         }
+
+        public static class Util {
+            /**
+             * Is the packet an instance of the PacketPlayOutEntity packet?
+             *
+             * @param packetID
+             * @return packetID == ENTITY or REL_ENTITY_MOVE or REL_ENTITY_MOVE_LOOK or ENTITY_LOOK
+             */
+            public static boolean isInstanceOfEntity(final byte packetID) {
+                return packetID == ENTITY || packetID == REL_ENTITY_MOVE ||
+                        packetID == REL_ENTITY_MOVE_LOOK || packetID == ENTITY_LOOK;
+            }
+        }
     }
 
 

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

@@ -1,12 +1,66 @@
-package io.github.retrooper.packetevents.packet;
+/*
+ * 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.
+ */
 
-import io.github.retrooper.packetevents.annotations.Nullable;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+package io.github.retrooper.packetevents.packettype;
+
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 
 public class PacketTypeClasses {
+    public static class Status {
+        public static Class<?> IN_START, PING, PONG, SERVER_INFO;
+
+        public static void load() {
+            IN_START = NMSUtils.getNMSClassWithoutException("PacketStatusInStart");
+            PING = NMSUtils.getNMSClassWithoutException("PacketStatusInPing");
+            PONG = NMSUtils.getNMSClassWithoutException("PacketStatusOutPong");
+            SERVER_INFO = NMSUtils.getNMSClassWithoutException("PacketStatusOutServerInfo");
+            PacketType.Status.init();
+        }
+    }
+    public static class Login {
+        public static Class<?>  HANDSHAKE,
+                IN_CUSTOM_PAYLOAD, OUT_CUSTOM_PAYLOAD,IN_START, IN_ENCRYPTION_BEGIN,
+                DISCONNECT, OUT_ENCRYPTION_BEGIN, OUT_SUCCESS;
+
+        public static void load() {
+            HANDSHAKE = NMSUtils.getNMSClassWithoutException("PacketHandshakingInSetProtocol");
+            //In and Out custom payload login packets have been here since AROUND 1.13.2.
+            IN_CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginInCustomPayload");
+            OUT_CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginOutCustomPayload");
+            IN_START = NMSUtils.getNMSClassWithoutException("PacketLoginInStart");
+            IN_ENCRYPTION_BEGIN = NMSUtils.getNMSClassWithoutException("PacketLoginInEncryptionBegin");
+            DISCONNECT = NMSUtils.getNMSClassWithoutException("PacketLoginOutDisconnect");
+            OUT_ENCRYPTION_BEGIN = NMSUtils.getNMSClassWithoutException("PacketLoginOutEncryptionBegin");
+            OUT_SUCCESS = NMSUtils.getNMSClassWithoutException("PacketLoginOutSuccess");
+            PacketType.Login.init();
+        }
+    }
+
     public static class Client {
-        public static Class<?> POSITION, POSITION_LOOK, LOOK, CLIENT_COMMAND,
+        private static final String c = "PacketPlayIn";
+        public static Class<?> FLYING, POSITION, POSITION_LOOK, LOOK, CLIENT_COMMAND,
                 TRANSACTION, BLOCK_DIG, ENTITY_ACTION, USE_ENTITY,
                 WINDOW_CLICK, STEER_VEHICLE, CUSTOM_PAYLOAD, ARM_ANIMATION,
                 BLOCK_PLACE, USE_ITEM, ABILITIES, HELD_ITEM_SLOT,
@@ -17,19 +71,20 @@ public class PacketTypeClasses {
                 AUTO_RECIPE, RECIPE_DISPLAYED, ITEM_NAME, RESOURCE_PACK_STATUS,
                 ADVANCEMENTS, TR_SEL, BEACON, SET_COMMAND_BLOCK,
                 SET_COMMAND_MINECART, SET_JIGSAW, STRUCT, UPDATE_SIGN, SPECTATE;
-        private static final String c = "PacketPlayIn";
-        @Nullable
-        public static final Class<?> FLYING = NMSUtils.getNMSClassWithoutException(c + "Flying");
 
+        /**
+         * Initiate all server-bound packet classes.
+         */
         public static void load() {
+            FLYING = NMSUtils.getNMSClassWithoutException(c + "Flying");
             try {
                 POSITION = NMSUtils.getNMSClass(c + "Position");
                 POSITION_LOOK = NMSUtils.getNMSClass(c + "PositionLook");
                 LOOK = NMSUtils.getNMSClass(c + "Look");
             } catch (ClassNotFoundException e) {
-                POSITION = Reflection.getSubClass(FLYING, c + "Position");
-                POSITION_LOOK = Reflection.getSubClass(FLYING, c + "PositionLook");
-                LOOK = Reflection.getSubClass(FLYING, c + "Look");
+                POSITION = SubclassUtil.getSubClass(FLYING, c + "Position");
+                POSITION_LOOK = SubclassUtil.getSubClass(FLYING, c + "PositionLook");
+                LOOK = SubclassUtil.getSubClass(FLYING, c + "Look");
             }
 
             try {
@@ -81,23 +136,16 @@ public class PacketTypeClasses {
             } catch (ClassNotFoundException e) {
                 e.printStackTrace();
             }
-            //Block place
+
             try {
                 BLOCK_PLACE = NMSUtils.getNMSClass(c + "BlockPlace");
-            } catch (ClassNotFoundException e) {
-                //They are just on a newer version
-                try {
-                    USE_ITEM = NMSUtils.getNMSClass(c + "UseItem");
-                } catch (ClassNotFoundException e2) {
-                    e.printStackTrace();
-                    e2.printStackTrace();
-                }
-            }
+                USE_ITEM = NMSUtils.getNMSClass(c + "UseItem");
+            } catch (ClassNotFoundException ignored) {
 
+            }
 
             PacketType.Client.init();
         }
-
     }
 
     public static class Server {
@@ -126,6 +174,9 @@ public class PacketTypeClasses {
                 NBT_QUERY, COLLECT, ENTITY_TELEPORT, ADVANCEMENTS, UPDATE_ATTRIBUTES,
                 ENTITY_EFFECT, RECIPE_UPDATE, TAGS, MAP_CHUNK_BULK;
 
+        /**
+         * Initiate all client-bound packet classes.
+         */
         public static void load() {
             SPAWN_ENTITY = NMSUtils.getNMSClassWithoutException(s + "SpawnEntity");
             SPAWN_ENTITY_EXPERIENCE_ORB = NMSUtils.getNMSClassWithoutException(s + "SpawnEntityExperienceOrb");
@@ -169,9 +220,9 @@ public class PacketTypeClasses {
             MAP = NMSUtils.getNMSClassWithoutException(s + "Map");
             OPEN_WINDOW_MERCHANT = NMSUtils.getNMSClassWithoutException(s + "OpenWindowMerchant");
             ENTITY = NMSUtils.getNMSClassWithoutException(s + "Entity");
-            REL_ENTITY_MOVE = Reflection.getSubClass(ENTITY, s + "RelEntityMove");
-            REL_ENTITY_MOVE_LOOK = Reflection.getSubClass(ENTITY, s + "RelEntityMoveLook");
-            ENTITY_LOOK = Reflection.getSubClass(ENTITY, s + "EntityLook");
+            REL_ENTITY_MOVE = SubclassUtil.getSubClass(ENTITY, s + "RelEntityMove");
+            REL_ENTITY_MOVE_LOOK = SubclassUtil.getSubClass(ENTITY, s + "RelEntityMoveLook");
+            ENTITY_LOOK = SubclassUtil.getSubClass(ENTITY, s + "EntityLook");
             if (REL_ENTITY_MOVE == null) {
                 //is not a subclass and should be accessed normally
                 REL_ENTITY_MOVE = NMSUtils.getNMSClassWithoutException(s + "RelEntityMove");

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

@@ -1,5 +0,0 @@
-package io.github.retrooper.packetevents.packetwrappers;
-
-public interface Sendable {
-    Object asNMSPacket();
-}

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

@@ -0,0 +1,32 @@
+/*
+ * 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

@@ -0,0 +1,646 @@
+/*
+ * 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;
+
+import io.github.retrooper.packetevents.exceptions.WrapperFieldNotFoundException;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.in.blockdig.WrappedPacketInBlockDig;
+import io.github.retrooper.packetevents.packetwrappers.in.blockplace.WrappedPacketInBlockPlace;
+import io.github.retrooper.packetevents.packetwrappers.in.clientcommand.WrappedPacketInClientCommand;
+import io.github.retrooper.packetevents.packetwrappers.in.custompayload.WrappedPacketInCustomPayload;
+import io.github.retrooper.packetevents.packetwrappers.in.entityaction.WrappedPacketInEntityAction;
+import io.github.retrooper.packetevents.packetwrappers.in.keepalive.WrappedPacketInKeepAlive;
+import io.github.retrooper.packetevents.packetwrappers.in.settings.WrappedPacketInSettings;
+import io.github.retrooper.packetevents.packetwrappers.in.updatesign.WrappedPacketInUpdateSign;
+import io.github.retrooper.packetevents.packetwrappers.in.useentity.WrappedPacketInUseEntity;
+import io.github.retrooper.packetevents.packetwrappers.in.windowclick.WrappedPacketInWindowClick;
+import io.github.retrooper.packetevents.packetwrappers.out.abilities.WrappedPacketOutAbilities;
+import io.github.retrooper.packetevents.packetwrappers.out.animation.WrappedPacketOutAnimation;
+import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
+import io.github.retrooper.packetevents.packetwrappers.out.custompayload.WrappedPacketOutCustomPayload;
+import io.github.retrooper.packetevents.packetwrappers.out.entity.WrappedPacketOutEntity;
+import io.github.retrooper.packetevents.packetwrappers.out.entitystatus.WrappedPacketOutEntityStatus;
+import io.github.retrooper.packetevents.packetwrappers.out.entityteleport.WrappedPacketOutEntityTeleport;
+import io.github.retrooper.packetevents.packetwrappers.out.entityvelocity.WrappedPacketOutEntityVelocity;
+import io.github.retrooper.packetevents.packetwrappers.out.experience.WrappedPacketOutExperience;
+import io.github.retrooper.packetevents.packetwrappers.out.explosion.WrappedPacketOutExplosion;
+import io.github.retrooper.packetevents.packetwrappers.out.gamestatechange.WrappedPacketOutGameStateChange;
+import io.github.retrooper.packetevents.packetwrappers.out.helditemslot.WrappedPacketOutHeldItemSlot;
+import io.github.retrooper.packetevents.packetwrappers.out.keepalive.WrappedPacketOutKeepAlive;
+import io.github.retrooper.packetevents.packetwrappers.out.kickdisconnect.WrappedPacketOutKickDisconnect;
+import io.github.retrooper.packetevents.packetwrappers.out.position.WrappedPacketOutPosition;
+import io.github.retrooper.packetevents.packetwrappers.out.transaction.WrappedPacketOutTransaction;
+import io.github.retrooper.packetevents.packetwrappers.out.updatehealth.WrappedPacketOutUpdateHealth;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
+    private static final Map<Class<?>, Map<Class<?>, Field[]>> fieldCache = new HashMap<>();
+    public static ServerVersion version;
+    protected Object packet;
+    private Class<?> packetClass;
+
+    public WrappedPacket() {
+
+    }
+
+    public WrappedPacket(final Object packet) {
+        this(packet, packet.getClass());
+    }
+
+    public WrappedPacket(final Object packet, Class<?> packetClass) {
+        if (packet.getClass().getSuperclass().equals(PacketTypeClasses.Client.FLYING)) {
+            packetClass = PacketTypeClasses.Client.FLYING;
+        } else if (packet.getClass().getSuperclass().equals(PacketTypeClasses.Server.ENTITY)) {
+            packetClass = PacketTypeClasses.Server.ENTITY;
+        }
+        this.packetClass = packetClass;
+
+
+        if (!fieldCache.containsKey(packetClass)) {
+            final Field[] declaredFields = packetClass.getDeclaredFields();
+            for (Field f : declaredFields) {
+                f.setAccessible(true);
+            }
+            List<Field> boolFields = getFields(boolean.class, declaredFields);
+            List<Field> byteFields = getFields(byte.class, declaredFields);
+            List<Field> shortFields = getFields(short.class, declaredFields);
+            List<Field> intFields = getFields(int.class, declaredFields);
+            ;
+            List<Field> longFields = getFields(long.class, declaredFields);
+            ;
+            List<Field> floatFields = getFields(float.class, declaredFields);
+            ;
+            List<Field> doubleFields = getFields(double.class, declaredFields);
+            ;
+            List<Field> stringFields = getFields(String.class, declaredFields);
+            ;
+
+            List<Field> boolArrayFields = getFields(boolean[].class, declaredFields);
+            ;
+            List<Field> byteArrayFields = getFields(byte[].class, declaredFields);
+            ;
+            List<Field> shortArrayFields = getFields(short[].class, declaredFields);
+            ;
+            List<Field> intArrayFields = getFields(int[].class, declaredFields);
+            ;
+            List<Field> longArrayFields = getFields(long[].class, declaredFields);
+            ;
+            List<Field> floatArrayFields = getFields(float[].class, declaredFields);
+            ;
+            List<Field> doubleArrayFields = getFields(double[].class, declaredFields);
+            ;
+            List<Field> stringArrayFields = getFields(String[].class, declaredFields);
+            ;
+
+            Field[] tmp = new Field[0];
+
+            Map<Class<?>, Field[]> map = new HashMap<>();
+            if (boolFields != null) {
+                map.put(boolean.class, boolFields.toArray(tmp));
+            }
+
+            if (byteFields != null) {
+                map.put(byte.class, byteFields.toArray(tmp));
+            }
+
+            if (shortFields != null) {
+                map.put(short.class, shortFields.toArray(tmp));
+            }
+
+            if (intFields != null) {
+                map.put(int.class, intFields.toArray(tmp));
+            }
+
+            if (longFields != null) {
+                map.put(long.class, longFields.toArray(tmp));
+            }
+
+            if (floatFields != null) {
+                map.put(float.class, floatFields.toArray(tmp));
+            }
+
+            if (doubleFields != null) {
+                map.put(double.class, doubleFields.toArray(tmp));
+            }
+
+            if (stringFields != null) {
+                map.put(String.class, stringFields.toArray(tmp));
+            }
+
+            if (boolArrayFields != null) {
+                map.put(boolean[].class, boolArrayFields.toArray(tmp));
+            }
+
+            if (byteArrayFields != null) {
+                map.put(byte[].class, byteArrayFields.toArray(tmp));
+            }
+
+            if (shortArrayFields != null) {
+                map.put(short[].class, shortArrayFields.toArray(tmp));
+            }
+
+            if (intArrayFields != null) {
+                map.put(int[].class, intArrayFields.toArray(tmp));
+            }
+
+            if (longArrayFields != null) {
+                map.put(long[].class, longArrayFields.toArray(tmp));
+            }
+
+            if (floatArrayFields != null) {
+                map.put(float[].class, floatArrayFields.toArray(tmp));
+            }
+
+            if (doubleArrayFields != null) {
+                map.put(double[].class, doubleArrayFields.toArray(tmp));
+            }
+
+            if (stringArrayFields != null) {
+                map.put(String[].class, stringArrayFields.toArray(tmp));
+            }
+            fieldCache.put(packetClass, map);
+        }
+        this.packet = packet;
+        setup();
+    }
+
+    public static void loadAllWrappers() {
+        //SERVER BOUND
+        WrappedPacketInBlockDig.load();
+        WrappedPacketInBlockPlace.load();
+        WrappedPacketInClientCommand.load();
+        WrappedPacketInCustomPayload.load();
+        WrappedPacketInEntityAction.load();
+        WrappedPacketInKeepAlive.load();
+        WrappedPacketInSettings.load();
+        WrappedPacketInUseEntity.load();
+        WrappedPacketInUpdateSign.load();
+        WrappedPacketInWindowClick.load();
+
+        //CLIENTBOUND
+        WrappedPacketOutAbilities.load();
+        WrappedPacketOutAnimation.load();
+        WrappedPacketOutChat.load();
+        WrappedPacketOutEntity.load();
+        WrappedPacketOutEntityVelocity.load();
+        WrappedPacketOutEntityTeleport.load();
+        WrappedPacketOutKeepAlive.load();
+        WrappedPacketOutKickDisconnect.load();
+        WrappedPacketOutPosition.load();
+        WrappedPacketOutTransaction.load();
+        WrappedPacketOutUpdateHealth.load();
+        WrappedPacketOutGameStateChange.load();
+        WrappedPacketOutCustomPayload.load();
+        WrappedPacketOutExplosion.load();
+        WrappedPacketOutEntityStatus.load();
+        WrappedPacketOutExperience.load();
+        WrappedPacketOutHeldItemSlot.load();
+    }
+
+    protected void setup() {
+
+    }
+
+    @Override
+    public boolean readBoolean(int index) {
+        return (boolean) read(boolean.class, index);
+    }
+
+    @Override
+    public byte readByte(int index) {
+        return (byte) read(byte.class, index);
+    }
+
+    @Override
+    public short readShort(int index) {
+        return (short) read(short.class, index);
+    }
+
+    @Override
+    public int readInt(int index) {
+        return (int) read(int.class, index);
+    }
+
+    @Override
+    public long readLong(int index) {
+        return (long) read(long.class, index);
+    }
+
+    @Override
+    public float readFloat(int index) {
+        return (float) read(float.class, index);
+    }
+
+    @Override
+    public double readDouble(int index) {
+        return (double) read(double.class, index);
+    }
+
+    @Override
+    public boolean[] readBooleanArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (boolean[]) cached.get(boolean[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (boolean[].class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (boolean[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, boolean[].class, index);
+    }
+
+    @Override
+    public byte[] readByteArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (byte[]) cached.get(byte[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (byte[].class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (byte[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, byte[].class, index);
+    }
+
+    @Override
+    public short[] readShortArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (short[]) cached.get(short[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (short[].class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (short[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, short[].class, index);
+    }
+
+    @Override
+    public int[] readIntArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (int[]) cached.get(int[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (int[].class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (int[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, int[].class, index);
+    }
+
+    @Override
+    public long[] readLongArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (long[]) cached.get(long[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (long[].class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (long[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, long[].class, index);
+    }
+
+    @Override
+    public float[] readFloatArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (float[]) cached.get(float[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (float.class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (float[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, float[].class, index);
+    }
+
+    @Override
+    public double[] readDoubleArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                return (double[]) cached.get(double[].class)[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        int currentIndex = 0;
+        for (Field f : packetClass.getDeclaredFields()) {
+            f.setAccessible(true);
+            if (double[].class.isAssignableFrom(f.getType())) {
+                if (index == currentIndex++) {
+                    try {
+                        return (double[]) f.get(packet);
+                    } catch (IllegalAccessException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, double[].class, index);
+    }
+
+    @Override
+    public String[] readStringArray(int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            try {
+                Object[] array = (Object[]) cached.get(String[].class)[index].get(packet);
+                int len = array.length;
+                String[] stringArray = new String[len];
+                for (int i = 0; i < len; i++) {
+                    stringArray[i] = array[i].toString();
+                }
+                return stringArray;
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, String[].class, index);
+    }
+
+    @Override
+    public String readString(int index) {
+        return (String) read(String.class, index);
+    }
+
+    public Object readAnyObject(int index) {
+        try {
+            Field f = packetClass.getDeclaredFields()[index];
+            if (!f.isAccessible()) {
+                f.setAccessible(true);
+            }
+            try {
+                return f.get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        } catch (ArrayIndexOutOfBoundsException e) {
+            throw new WrapperFieldNotFoundException("PacketEvents failed to find any field indexed " + index + " in the " + ClassUtil.getClassSimpleName(packetClass) + " class!");
+        }
+        return null;
+    }
+
+    public Object readObject(int index, Class<?> type) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached != null) {
+            Field[] cachedFields = cached.get(type);
+            if (cachedFields == null) {
+                List<Field> typeFields = new ArrayList<>();
+                for (Field f : packetClass.getDeclaredFields()) {
+                    f.setAccessible(true);
+                    if (f.getType().equals(type)) {
+                        typeFields.add(f);
+                    }
+                }
+                if (!typeFields.isEmpty()) {
+                    cached.put(type, typeFields.toArray(new Field[0]));
+                    cachedFields = cached.get(type);
+                }
+                else {
+                    throw new WrapperFieldNotFoundException("The class you are trying to read fields from does not contain any fields!");
+                }
+            }
+            try {
+                return cachedFields[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
+        throw new WrapperFieldNotFoundException(packetClass, type, index);
+    }
+
+    public Object[] readObjectArray(int index, Class<?> type) {
+        if (type.equals(String.class)) {
+            return readStringArray(index);
+        }
+        try {
+            return (Object[]) readObject(index, getArrayClass(type));
+        } catch (ClassNotFoundException e) {
+            throw new IllegalStateException("PacketEvents failed to find the array class of type " + type.getName());
+        }
+    }
+
+    @Override
+    public void writeBoolean(int index, boolean value) {
+        write(boolean.class, index, value);
+    }
+
+    @Override
+    public void writeByte(int index, byte value) {
+        write(byte.class, index, value);
+    }
+
+    @Override
+    public void writeShort(int index, short value) {
+        write(short.class, index, value);
+    }
+
+    @Override
+    public void writeInt(int index, int value) {
+        write(int.class, index, value);
+    }
+
+    @Override
+    public void writeLong(int index, long value) {
+        write(long.class, index, value);
+    }
+
+    @Override
+    public void writeFloat(int index, float value) {
+        write(float.class, index, value);
+    }
+
+    @Override
+    public void writeDouble(int index, double value) {
+        write(double.class, index, value);
+    }
+
+    @Override
+    public void writeString(int index, String value) {
+        write(String.class, index, value);
+    }
+
+    private void write(Class<?> type, int index, Object value) throws WrapperFieldNotFoundException {
+        Field field = getField(type, index);
+        if (field == null) {
+            throw new WrapperFieldNotFoundException(packetClass, type, index);
+        }
+        try {
+            field.set(packet, value);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private Object read(Class<?> type, int index) throws WrapperFieldNotFoundException {
+        Field field = getField(type, index);
+        if (field == null) {
+            throw new WrapperFieldNotFoundException(packetClass, type, index);
+        }
+        try {
+            return field.get(packet);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    private Field getField(Class<?> type, int index) {
+        Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
+        if (cached == null) {
+            return null;
+        }
+        Field[] fields = cached.get(type);
+        if (fields != null) {
+            return fields[index];
+        }
+        return null;
+    }
+
+    private List<Field> getFields(Class<?> type, Field[] fields) {
+        List<Field> ret = new ArrayList<>();
+        for (Field field : fields) {
+            if (field.getType() == type) {
+                ret.add(field);
+            }
+        }
+        return ret;
+    }
+
+    private Class<?> getArrayClass(Class<?> componentType) throws ClassNotFoundException {
+        ClassLoader classLoader = componentType.getClassLoader();
+        String name;
+        if (componentType.isArray()) {
+            // just add a leading "["
+            name = "[" + componentType.getName();
+        } else if (componentType == boolean.class) {
+            name = "[Z";
+        } else if (componentType == byte.class) {
+            name = "[B";
+        } else if (componentType == char.class) {
+            name = "[C";
+        } else if (componentType == double.class) {
+            name = "[D";
+        } else if (componentType == float.class) {
+            name = "[F";
+        } else if (componentType == int.class) {
+            name = "[I";
+        } else if (componentType == long.class) {
+            name = "[J";
+        } else if (componentType == short.class) {
+            name = "[S";
+        } else {
+            // must be an object non-array class
+            name = "[L" + componentType.getName() + ";";
+        }
+        return classLoader != null ? classLoader.loadClass(name) : Class.forName(name);
+    }
+}

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

@@ -0,0 +1,66 @@
+/*
+ * 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);
+
+    Object[] readObjectArray(int index, Class<?> type);
+}

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

@@ -0,0 +1,45 @@
+/*
+ * 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);
+}

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

@@ -1,37 +0,0 @@
-package io.github.retrooper.packetevents.packetwrappers.api;
-
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import org.bukkit.entity.Player;
-
-public class WrappedPacket {
-    protected static ServerVersion version = ServerVersion.getVersion();
-    protected final Player player;
-    protected Object packet;
-
-    public WrappedPacket(final Object packet) {
-        this.player = null;
-        if (packet == null) return;
-        this.packet = packet;
-        try {
-            setup();
-        } catch (final Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    public WrappedPacket(final Player player, final Object packet) {
-        this.player = player;
-        if (packet == null) return;
-        this.packet = packet;
-        try {
-            setup();
-        } catch (final Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    protected void setup() {
-
-    }
-
-}

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

@@ -1,67 +1,95 @@
+/*
+ * 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.in.abilities;
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.annotations.NotNull;
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public final class WrappedPacketInAbilities extends WrappedPacket {
-    private static Class<?> abilitiesClass;
-
-    static {
-
-        try {
-            abilitiesClass = NMSUtils.getNMSClass("PacketPlayInAbilities");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private boolean isVulnerable;
-    private boolean isFlying;
-    private boolean allowFly;
-    private boolean instantBuild;
-    private float flySpeed;
-    private float walkSpeed;
 
     public WrappedPacketInAbilities(Object packet) {
         super(packet);
     }
-
-    @Override
-    protected void setup() {
-        try {
-            this.isVulnerable = Reflection.getField(abilitiesClass, boolean.class, 0).getBoolean(packet);
-            this.isFlying = Reflection.getField(abilitiesClass, boolean.class, 1).getBoolean(packet);
-            this.allowFly = Reflection.getField(abilitiesClass, boolean.class, 2).getBoolean(packet);
-            this.instantBuild = Reflection.getField(abilitiesClass, boolean.class, 3).getBoolean(packet);
-            this.flySpeed = Reflection.getField(abilitiesClass, float.class, 0).getFloat(packet);
-            this.walkSpeed = Reflection.getField(abilitiesClass, float.class, 1).getFloat(packet);
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return Whether the player is vulnerable to damage or not.
+     */
+    @Deprecated
+    @Nullable
     public boolean isVulnerable() {
-        return isVulnerable;
+        return readBoolean(0);
     }
 
+    @NotNull
     public boolean isFlying() {
-        return isFlying;
+        return readBoolean(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
+    @Nullable
     public boolean isFlightAllowed() {
-        return allowFly;
+        return readBoolean(2);
     }
 
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return Whether or not the player can break blocks instantly.
+     */
+    @Deprecated
+    @Nullable
     public boolean canInstantlyBuild() {
-        return instantBuild;
+        return readBoolean(3);
     }
 
+    /**
+     * This will return null if the server version is not available in 1.16.x and above
+     *
+     * @return The speed at which the player can fly, as a float.
+     */
+    @Deprecated
+    @Nullable
     public float getFlySpeed() {
-        return flySpeed;
+        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
+    @Nullable
     public float getWalkSpeed() {
-        return walkSpeed;
+        return readFloat(1);
     }
 }

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

@@ -1,20 +1,52 @@
+/*
+ * 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.in.blockdig;
 
 import io.github.retrooper.packetevents.enums.Direction;
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.enums.minecraft.PlayerDigType;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+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 java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketInBlockDig extends WrappedPacket {
     private static Class<?> blockDigClass, blockPositionClass, enumDirectionClass, digTypeClass;
+    private static boolean isVersionLowerThan_v_1_8;
+    private Object blockPosObj;
+    private Object enumDirObj;
 
-    static {
+    public WrappedPacketInBlockDig(Object packet) {
+        super(packet);
+    }
 
+    public static void load() {
+        blockDigClass = PacketTypeClasses.Client.BLOCK_DIG;
         try {
-            blockDigClass = NMSUtils.getNMSClass("PacketPlayInBlockDig");
             if (version.isHigherThan(ServerVersion.v_1_7_10)) {
                 blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
                 enumDirectionClass = NMSUtils.getNMSClass("EnumDirection");
@@ -22,71 +54,119 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
         }
+        isVersionLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
 
-        try {
-            digTypeClass = NMSUtils.getNMSClass("EnumPlayerDigType");
-        } catch (ClassNotFoundException e) {
-            //It is probably a subclass
-            digTypeClass = Reflection.getSubClass(blockDigClass, "EnumPlayerDigType");
-        }
-    }
-
-    private Vector3i blockPosition;
-    private Direction direction;
-    private PlayerDigType digType;
-
-    public WrappedPacketInBlockDig(Object packet) {
-        super(packet);
-    }
-
-    @Override
-    protected void setup() {
-        Direction enumDirection = null;
-        PlayerDigType enumDigType = null;
-        //1.7.10
-        try {
-            if (version.isLowerThan(ServerVersion.v_1_8)) {
-                setupCoordinates(blockDigClass, packet);
-                enumDirection = Direction.get(Reflection.getField(digTypeClass, int.class, 3).getInt(packet));
-                enumDigType = PlayerDigType.get(Reflection.getField(digTypeClass, int.class, 4).getInt(packet));
-            } else {
-                //1.8+
-                final Object blockPosObj = Reflection.getField(blockDigClass, blockPositionClass, 0).get(packet);
-                final Object enumDirectionObj = Reflection.getField(blockDigClass, enumDirectionClass, 0).get(packet);
-                final Object digTypeObj = Reflection.getField(blockDigClass, digTypeClass, 0).get(packet);
-
-                Class<?> blockPosSuper = blockPositionClass;
-                setupCoordinates(blockPosSuper, blockPosObj);
-
-                enumDirection = Direction.valueOf(((Enum) enumDirectionObj).name());
-                enumDigType = PlayerDigType.valueOf(((Enum) digTypeObj).name());
+        if (version != ServerVersion.v_1_7_10) {
+            try {
+                digTypeClass = NMSUtils.getNMSClass("EnumPlayerDigType");
+            } catch (ClassNotFoundException e) {
+                //It is probably a subclass
+                digTypeClass = SubclassUtil.getSubClass(blockDigClass, "EnumPlayerDigType");
             }
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
         }
-        this.direction = enumDirection;
-        this.digType = enumDigType;
     }
 
-    private void setupCoordinates(final Class<?> cls, final Object object) throws IllegalAccessException {
-        final int x = Reflection.getField(cls, int.class, 0).getInt(object);
-        final int y = Reflection.getField(cls, int.class, 1).getInt(object);
-        final int z = Reflection.getField(cls, int.class, 2).getInt(object);
-
-        this.blockPosition = new Vector3i(x, y, z);
+    /**
+     * Get X position of the block
+     * @return Block Position X
+     */
+    public int getX() {
+        if(isVersionLowerThan_v_1_8) {
+            return readInt(0);
+        }
+        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;
+        }
     }
 
-    public Vector3i getBlockPosition() {
-        return blockPosition;
+    /**
+     * Get Y position of the block
+     * @return Block Position Y
+     */
+    public int getY() {
+        if(isVersionLowerThan_v_1_8) {
+            return readInt(1);
+        }
+        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;
+        }
+    }
+
+    /**
+     * Get the direction / Get the face.
+     * @return Direction
+     */
     public Direction getDirection() {
-        return direction;
+        if(isVersionLowerThan_v_1_8) {
+            return Direction.values()[readInt(3)];
+        }
+        else {
+            if(enumDirObj == null) {
+                enumDirObj = readObject(0, enumDirectionClass);
+            }
+            return Direction.valueOf(((Enum)enumDirObj).name());
+        }
     }
 
+    /**
+     * Get the PlayerDigType enum sent in this packet.
+     * @return Dig Type
+     */
     public PlayerDigType getDigType() {
-        return digType;
+        if(isVersionLowerThan_v_1_8) {
+            return PlayerDigType.values()[readInt(4)];
+        }
+        else {
+            return PlayerDigType.valueOf(((Enum)readObject(0, digTypeClass)).name());
+        }
     }
 
-
+    public enum PlayerDigType {
+        START_DESTROY_BLOCK,
+        ABORT_DESTROY_BLOCK,
+        STOP_DESTROY_BLOCK,
+        DROP_ALL_ITEMS,
+        DROP_ITEM,
+        RELEASE_USE_ITEM,
+        SWAP_HELD_ITEMS,
+        SWAP_ITEM_WITH_OFFHAND,
+        WRONG_PACKET
+    }
 }

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

@@ -1,64 +1,98 @@
+/*
+ * 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.in.blockplace;
 
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.utils.vector.Vector3i;
-import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.ItemStack;
+import io.github.retrooper.packetevents.enums.Direction;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
 
 
 public final class WrappedPacketInBlockPlace extends WrappedPacket {
-    static {
-        if (version.isHigherThan(ServerVersion.v_1_7_10)) {
-            WrappedPacketInBlockPlace_1_8.initStatic();
+    private static boolean isHigherThan_v_1_8_8, isHigherThan_v_1_7_10;
+
+    public WrappedPacketInBlockPlace(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        isHigherThan_v_1_8_8 = version.isHigherThan(ServerVersion.v_1_8_8);
+        isHigherThan_v_1_7_10 = version.isHigherThan(ServerVersion.v_1_7_10);
+        WrappedPacketInBlockPlace_1_9.load();
+    }
+
+    public Direction getDirection() {
+        if (isHigherThan_v_1_8_8) {
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
+            return Direction.valueOf(((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 Direction.values()[blockPlace_1_8.getFace()];
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            return Direction.values()[blockPlace_1_7_10.face];
         }
     }
 
-    private Vector3i blockPosition;
-    private ItemStack itemStack;
-
-    public WrappedPacketInBlockPlace(final Player player, final Object packet) {
-        super(player, packet);
-    }
-
-    @Override
-    protected void setup() {
-        //1.7.10
-        Vector3i position = null;
-        ItemStack itemStack = null;
-        try {
-            if (version.isHigherThan(ServerVersion.v_1_8_8)) {
-                final WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
-                final Block block = blockPlace_1_9.getBlock();
-                position = new Vector3i(block.getX(), block.getY(), block.getZ());
-                itemStack = new ItemStack(block.getType());
-            } else if (version.isHigherThan(ServerVersion.v_1_7_10)) {
-                final WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-                position = blockPlace_1_8.getBlockPosition();
-                itemStack = blockPlace_1_8.getItemStack();
-            } else {
-                final WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(getPlayer(), packet);
-                position = blockPlace_1_7_10.getBlockPosition();
-                this.itemStack = blockPlace_1_7_10.getItemStack();
-            }
-        } catch (IllegalArgumentException e) {
-            e.printStackTrace();
+    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();
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            return blockPlace_1_7_10.x;
         }
-        this.blockPosition = position;
-        this.itemStack = itemStack;
     }
 
-    public Player getPlayer() {
-        return this.player;
+    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 Vector3i getBlockPosition() {
-        return blockPosition;
-    }
-
-    public ItemStack getItemStack() {
-        return itemStack;
+    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();
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            return blockPlace_1_7_10.z;
+        }
     }
 
 }

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

@@ -1,42 +1,54 @@
+/*
+ * 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.in.blockplace;
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.utils.vector.Vector3i;
-import net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace;
-import org.bukkit.entity.Player;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import org.bukkit.inventory.ItemStack;
 
 final class WrappedPacketInBlockPlace_1_7_10 extends WrappedPacket {
-    private Vector3i blockPosition;
-    private ItemStack itemStack;
-    private int blockFace;
+    public int x, y, z;
+    public ItemStack itemStack;
+    public int face;
 
-    WrappedPacketInBlockPlace_1_7_10(final Player player, final Object packet) {
-        super(player, packet);
+    WrappedPacketInBlockPlace_1_7_10(final Object packet) {
+        super(packet);
     }
 
 
     @Override
     protected void setup() {
-        final PacketPlayInBlockPlace blockPlace = (PacketPlayInBlockPlace) packet;
+        final net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace blockPlace =
+                (net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace) packet;
 
-        this.blockPosition = new Vector3i(blockPlace.c(), blockPlace.d(), blockPlace.e());
+        x = blockPlace.c();
+        y = blockPlace.d();
+        z = blockPlace.e();
 
-        this.blockFace = blockPlace.d();
+        this.face = blockPlace.d();
 
         net.minecraft.server.v1_7_R4.ItemStack stack = blockPlace.getItemStack();
         this.itemStack = org.bukkit.craftbukkit.v1_7_R4.inventory.CraftItemStack.asBukkitCopy(stack);
     }
-
-    public Vector3i getBlockPosition() {
-        return blockPosition;
-    }
-
-    public ItemStack getItemStack() {
-        return itemStack;
-    }
-
-    public int getBlockFace() {
-        return blockFace;
-    }
 }

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

@@ -1,56 +1,85 @@
+/*
+ * 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.in.blockplace;
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-import io.github.retrooper.packetevents.utils.vector.Vector3i;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import org.bukkit.inventory.ItemStack;
 
 import java.lang.reflect.InvocationTargetException;
 
 final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
-    private static Class<?> blockPlaceClass, blockPositionClass;
-    private Vector3i blockPosition;
-    private ItemStack itemStack;
+    private Object blockPosObj;
 
     WrappedPacketInBlockPlace_1_8(final Object packet) {
         super(packet);
     }
 
-    protected static void initStatic() {
-        try {
-            blockPlaceClass = NMSUtils.getNMSClass("PacketPlayInBlockPlace");
-
-            blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
+    public int getX() {
+        if(blockPosObj == null) {
+            blockPosObj = readObject(1, NMSUtils.blockPosClass);
         }
-    }
-
-    @Override
-    protected void setup() {
         try {
-            Object nmsBlockPos = Reflection.getField(blockPlaceClass, blockPositionClass, 1).get(packet);
-
-            final int[] coords = new int[3];
-            for (int i = 0; i < 3; i++) {
-                final String s = "get" + (i == 0 ? "X" : i == 1 ? "Y" : "Z");
-                coords[i] = (int) Reflection.getMethod(blockPositionClass.getSuperclass(), s, 0).invoke(nmsBlockPos);
-            }
-
-            this.blockPosition = new Vector3i(coords[0], coords[1], coords[2]);
-
-            this.itemStack = NMSUtils.toBukkitItemStack(Reflection.getField(blockPlaceClass, NMSUtils.nmsItemStackClass, 0).get(packet));
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
+        return -1;
+    }
+    
+
+    public int getY() {
+        if(blockPosObj == null) {
+            blockPosObj = readObject(1, NMSUtils.blockPosClass);
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return -1;
     }
 
-    public Vector3i getBlockPosition() {
-        return blockPosition;
+    public int getZ() {
+        if(blockPosObj == null) {
+            blockPosObj = readObject(1, NMSUtils.blockPosClass);
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return -1;
     }
 
     public ItemStack getItemStack() {
-        return itemStack;
+        return NMSUtils.toBukkitItemStack(readObject(0, NMSUtils.nmsItemStackClass));
+    }
+
+    public int getFace() {
+        return readInt(0);
     }
 }

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

@@ -1,31 +1,109 @@
+/*
+ * 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.in.blockplace;
 
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.utils.BlockIteratorUtils;
-import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+
+import java.lang.reflect.InvocationTargetException;
 
 final class WrappedPacketInBlockPlace_1_9 extends WrappedPacket {
-    private Block block;
+    private Object blockPosObj;
+    private static Class<?> movingObjectPositionBlockClass;
 
-    public WrappedPacketInBlockPlace_1_9(final Player player, final Object packet) {
-        super(player, packet);
+    public static void load() {
+        movingObjectPositionBlockClass = NMSUtils.getNMSClassWithoutException("MovingObjectPositionBlock");
     }
 
-
-    @Override
-    protected void setup() {
-        this.block = BlockIteratorUtils.getBlockLookingAt(getPlayer(), 3);
+    public WrappedPacketInBlockPlace_1_9(final Object packet) {
+        super(packet);
     }
 
-    public Player getPlayer() {
-        return this.player;
+    public int getX() {
+        if (blockPosObj == null) {
+            if (movingObjectPositionBlockClass == null) {
+                blockPosObj = readObject(0, NMSUtils.blockPosClass);
+            } else {
+                Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+                WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+                blockPosObj = movingObjectPosWrapper.readObject(0, NMSUtils.blockPosClass);
+            }
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return -1;
     }
 
-    public Block getBlock() {
-        return block;
+    public int getY() {
+        if (blockPosObj == null) {
+            if (movingObjectPositionBlockClass == null) {
+                blockPosObj = readObject(0, NMSUtils.blockPosClass);
+            } else {
+                Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+                WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+                blockPosObj = movingObjectPosWrapper.readObject(0, NMSUtils.blockPosClass);
+            }
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return -1;
     }
 
+    public int getZ() {
+        if (blockPosObj == null) {
+            if (movingObjectPositionBlockClass == null) {
+                blockPosObj = readObject(0, NMSUtils.blockPosClass);
+            } else {
+                Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+                WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+                blockPosObj = movingObjectPosWrapper.readObject(0, NMSUtils.blockPosClass);
+            }
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return -1;
+    }
 
+    public Object getEnumDirectionObject() {
+        if (movingObjectPositionBlockClass == null) {
+            return readObject(0, NMSUtils.enumDirectionClass);
+        } else {
+            Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+            WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+            return movingObjectPosWrapper.readObject(0, NMSUtils.enumDirectionClass);
+        }
+    }
 }

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

@@ -1,38 +1,42 @@
+/*
+ * 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.in.chat;
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public final class WrappedPacketInChat extends WrappedPacket {
-    private static Class<?> chatPacketClass;
-
-    static {
-        try {
-            chatPacketClass = NMSUtils.getNMSClass("PacketPlayInChat");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private String message;
-
     public WrappedPacketInChat(Object packet) {
         super(packet);
     }
 
-
-    @Override
-    protected void setup() {
-        try {
-            final Object obj = Reflection.getField(chatPacketClass, String.class, 0).get(packet);
-            this.message = obj.toString();
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
+    /**
+     * Get the message.
+     *
+     * @return Chat Message
+     */
     public String getMessage() {
-        return message;
+        return readString(0);
     }
 }

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

@@ -0,0 +1,69 @@
+/*
+ * 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.in.clientcommand;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
+
+public final class WrappedPacketInClientCommand extends WrappedPacket {
+    private static Class<?> enumClientCommandClass;
+    private Object enumObj;
+
+    public WrappedPacketInClientCommand(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Client.CLIENT_COMMAND;
+
+        try {
+            enumClientCommandClass = NMSUtils.getNMSClass("EnumClientCommand");
+        } catch (ClassNotFoundException e) {
+            //Probably a subclass
+            enumClientCommandClass = SubclassUtil.getSubClass(packetClass, "EnumClientCommand");
+        }
+    }
+
+    /**
+     * Get the Client Command enum sent in the packet
+     *
+     * @return ClientCommand
+     */
+    public ClientCommand getClientCommand() {
+        if(enumObj == null) {
+            enumObj = readObject(0, enumClientCommandClass);
+        }
+        return ClientCommand.valueOf(enumObj.toString());
+    }
+
+    public enum ClientCommand {
+        PERFORM_RESPAWN,
+        REQUEST_STATS,
+        OPEN_INVENTORY_ACHIEVEMENT
+    }
+
+}

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

@@ -0,0 +1,82 @@
+/*
+ * 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.in.custompayload;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.bytebuf.ByteBufUtil;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+
+public final class WrappedPacketInCustomPayload extends WrappedPacket {
+    private static Class<?> nmsMinecraftKey, packetDataSerializerClass, byteBufClass;
+
+    private static boolean strPresent, byteArrayPresent;
+
+    public WrappedPacketInCustomPayload(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Client.CUSTOM_PAYLOAD;
+        strPresent = Reflection.getField(packetClass, String.class, 0) != null;
+        byteArrayPresent = Reflection.getField(packetClass, byte[].class, 0) != null;
+        packetDataSerializerClass = NMSUtils.getNMSClassWithoutException("PacketDataSerializer");
+        try {
+            byteBufClass = NMSUtils.getNettyClass("buffer.ByteBuf");
+        } catch (ClassNotFoundException ignored) {
+
+        }
+        try {
+            //Only on 1.13+
+            nmsMinecraftKey = NMSUtils.getNMSClass("MinecraftKey");
+        } catch (ClassNotFoundException e) {
+            //Its okay, this means they are on versions 1.7.10 - 1.12.2
+        }
+    }
+
+    public String getTag() {
+        if (strPresent) {
+            return readString(0);
+        } else {
+            Object minecraftKey = readObject(0, nmsMinecraftKey);
+            WrappedPacket minecraftKeyWrapper = new WrappedPacket(minecraftKey);
+            return minecraftKeyWrapper.readString(1);
+        }
+    }
+
+    public byte[] getData() {
+        if (byteArrayPresent) {
+            return readByteArray(0);
+        } else {
+            Object dataSerializer = readObject(0, packetDataSerializerClass);
+            WrappedPacket byteBufWrapper = new WrappedPacket(dataSerializer);
+
+            Object byteBuf = byteBufWrapper.readObject(0, byteBufClass);
+
+            return ByteBufUtil.getBytes(byteBuf);
+        }
+    }
+}

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

@@ -1,98 +1,140 @@
+/*
+ * 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.in.entityaction;
 
 import io.github.retrooper.packetevents.annotations.Nullable;
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.enums.minecraft.PlayerAction;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 import org.bukkit.entity.Entity;
 
+import java.util.HashMap;
+
 public final class WrappedPacketInEntityAction extends WrappedPacket {
-    private static Class<?> entityActionClass;
+    private static final HashMap<String, PlayerAction> cachedPlayerActionNames = new HashMap<>();
+    private static final HashMap<Integer, PlayerAction> cachedPlayerActionIDs = new HashMap<>();
     @Nullable
     private static Class<?> enumPlayerActionClass;
-
-    static {
-        try {
-            entityActionClass = NMSUtils.getNMSClass("PacketPlayInEntityAction");
-            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
-                for (final Class<?> sub : entityActionClass.getDeclaredClasses()) {
-                    if (sub.getSimpleName().equals("EnumPlayerAction")) {
-                        enumPlayerActionClass = sub;
-                        break;
-                    }
-                }
-            } else {
-                enumPlayerActionClass = NMSUtils.getNMSClass("EnumPlayerAction");
-            }
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
+    private static boolean isLowerThan_v_1_8;
     private Entity entity;
-    private int entityId;
-    private PlayerAction action;
-    private int jumpBoost;
+    private int entityId = -1;
 
     public WrappedPacketInEntityAction(final Object packet) {
         super(packet);
     }
 
-    @Override
-    protected void setup() {
-        try {
-            final int entityId = Reflection.getField(entityActionClass, int.class, 0).getInt(packet);
-            final int jumpBoost;
-            if (version.isLowerThan(ServerVersion.v_1_8)) {
-                jumpBoost = Reflection.getField(entityActionClass, int.class, 2).getInt(packet);
-            } else {
-                jumpBoost = Reflection.getField(entityActionClass, int.class, 1).getInt(packet);
-            }
-
-            int animationIndex = -1;
-
-            //1.7.10
-            if (version.isLowerThan(ServerVersion.v_1_8)) {
-                animationIndex = Reflection.getField(entityActionClass, int.class, 1).getInt(packet);
-            } else {
-                final Object enumObj = Reflection.getField(entityActionClass, enumPlayerActionClass, 0).get(packet);
-                final String enumValue = enumObj.toString();
-                try {
-                    this.action = PlayerAction.valueOf(enumValue);
-                } catch (IllegalArgumentException e) {
-                    //They aren't on a legacy version and the enum has changed
-                    final PlayerAction.UpdatedPlayerAction updatedPlayerAction = PlayerAction.UpdatedPlayerAction.valueOf(enumValue);
-                    this.action = PlayerAction.get(updatedPlayerAction.getIndex());
-                }
-            }
-
-
-            this.entityId = entityId;
-            this.jumpBoost = jumpBoost;
-            if (animationIndex != -1) {
-                this.action = PlayerAction.get(animationIndex);
-            }
-            this.entity = NMSUtils.getEntityById(this.entityId);
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
+    public static void load() {
+        Class<?> entityActionClass = NMSUtils.getNMSClassWithoutException("PacketPlayInEntityAction");
+        isLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
+        if (!isLowerThan_v_1_8) {
+            enumPlayerActionClass = SubclassUtil.getSubClass(entityActionClass, "EnumPlayerAction");
+        }
+        //All the already existing values
+        for (PlayerAction val : PlayerAction.values()) {
+            cachedPlayerActionNames.put(val.name(), val);
         }
-    }
 
+        cachedPlayerActionNames.put("PRESS_SHIFT_KEY", PlayerAction.START_SNEAKING);
+        cachedPlayerActionNames.put("RELEASE_SHIFT_KEY", PlayerAction.STOP_SNEAKING);
+        cachedPlayerActionNames.put("RIDING_JUMP", PlayerAction.START_RIDING_JUMP);
+
+        cachedPlayerActionIDs.put(1, PlayerAction.START_SNEAKING);
+        cachedPlayerActionIDs.put(2, PlayerAction.STOP_SNEAKING);
+        cachedPlayerActionIDs.put(3, PlayerAction.STOP_SLEEPING);
+        cachedPlayerActionIDs.put(4, PlayerAction.START_SPRINTING);
+        cachedPlayerActionIDs.put(5, PlayerAction.STOP_SPRINTING);
+        cachedPlayerActionIDs.put(6, PlayerAction.START_RIDING_JUMP); //riding jump
+        cachedPlayerActionIDs.put(7, PlayerAction.OPEN_INVENTORY); //horse interaction
+
+    }
+    /**
+     * Lookup the associated entity by the ID that was sent in the packet.
+     *
+     * @return Entity
+     */
     public Entity getEntity() {
+        if(entity == null) {
+            return entity = NMSUtils.getEntityById(getEntityId());
+        }
         return entity;
     }
 
+    /**
+     * Get the ID of the entity.
+     * If you do not want to use {@link #getEntity()},
+     * you lookup the entity by yourself with this entity ID.
+     *
+     * @return Entity ID
+     */
     public int getEntityId() {
+        if(entityId == -1) {
+            entityId = readInt(0);
+        }
         return entityId;
     }
 
+    /**
+     * Get the player action.
+     *
+     * @return Player Action
+     */
     public PlayerAction getAction() {
-        return action;
+        if (isLowerThan_v_1_8) {
+            int animationIndex = readInt(1);
+            return cachedPlayerActionIDs.get(animationIndex);
+        } else {
+            final Object enumObj = readObject(0, enumPlayerActionClass);
+            final String enumValueName = enumObj.toString();
+            return cachedPlayerActionNames.get(enumValueName);
+        }
     }
 
+    /**
+     * Get the jump boost integer.
+     *
+     * @return Jump Boost
+     */
     public int getJumpBoost() {
-        return jumpBoost;
+        if (isLowerThan_v_1_8) {
+            return readInt(2);
+        } else {
+            return readInt(1);
+        }
     }
+
+    public enum PlayerAction {
+        START_SNEAKING,
+        STOP_SNEAKING,
+        STOP_SLEEPING,
+        START_SPRINTING,
+        STOP_SPRINTING,
+        START_RIDING_JUMP,
+        STOP_RIDING_JUMP,
+        OPEN_INVENTORY,
+        START_FALL_FLYING
+    }
+
 }

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

@@ -1,164 +1,66 @@
+/*
+ * 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.in.flying;
 
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public class WrappedPacketInFlying extends WrappedPacket {
-    private static Class<?> flyingClass;
-
-    static {
-
-        try {
-            flyingClass = NMSUtils.getNMSClass("PacketPlayInFlying");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private double x;
-    private double y;
-    private double z;
-    private float yaw;
-    private float pitch;
-    private boolean onGround;
-    private boolean isPosition;
-    private boolean isLook;
-
     public WrappedPacketInFlying(Object packet) {
         super(packet);
     }
-
-    @Override
-    protected void setup() {
-        try {
-            //x, y, z, yaw pitch, onGround, isPosition, isLook
-            this.x = Reflection.getField(flyingClass, double.class, 0).getDouble(packet);
-            this.y = Reflection.getField(flyingClass, double.class, 1).getDouble(packet);
-            this.z = Reflection.getField(flyingClass, double.class, 2).getDouble(packet);
-
-            this.yaw = Reflection.getField(flyingClass, float.class, 0).getFloat(packet);
-            this.pitch = Reflection.getField(flyingClass, float.class, 1).getFloat(packet);
-
-            this.onGround = Reflection.getField(flyingClass, boolean.class, 0).getBoolean(packet);
-
-            this.isPosition = Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
-            this.isLook = Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
+    
+    public double getX() {
+        return readDouble(0);
     }
 
-    public final double getX() {
-        return x;
+    public double getY() {
+        return readDouble(1);
     }
 
-    public final double getY() {
-        return y;
+    public double getZ() {
+        return readDouble(2);
     }
 
-    public final double getZ() {
-        return z;
+    public float getYaw() {
+        return readFloat(0);
     }
 
-    public final float getYaw() {
-        return yaw;
+    public float getPitch() {
+        return readFloat(1);
     }
 
-    public final float getPitch() {
-        return pitch;
+    public boolean isOnGround() {
+        return readBoolean(0);
     }
 
-    public final boolean isOnGround() {
-        return onGround;
+    public final boolean isPosition() {
+        return readBoolean(1);
     }
 
-    public boolean isPosition() {
-        return isPosition;
+    public final boolean isLook() {
+        return readBoolean(2);
     }
-
-    public boolean isLook() {
-        return isLook;
-    }
-
-    public static class WrappedPacketInPosition extends WrappedPacketInFlying {
-        public WrappedPacketInPosition(Object packet) {
-            super(packet);
-        }
-
-        @Override
-        public boolean isPosition() {
-            try {
-                return Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
-            } catch (IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            return true;
-        }
-
-        @Override
-        public boolean isLook() {
-            try {
-                return Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
-            } catch (IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            return false;
-        }
-    }
-
-    public static class WrappedPacketInPosition_Look extends WrappedPacketInFlying {
-        public WrappedPacketInPosition_Look(Object packet) {
-            super(packet);
-        }
-
-        @Override
-        public boolean isPosition() {
-            try {
-                return Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
-            } catch (IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            return true;
-        }
-
-        @Override
-        public boolean isLook() {
-            try {
-                return Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
-            } catch (IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            return true;
-        }
-    }
-
-    public static class WrappedPacketInLook extends WrappedPacketInFlying {
-
-        public WrappedPacketInLook(Object packet) {
-            super(packet);
-        }
-
-        @Override
-        public boolean isPosition() {
-            try {
-                return Reflection.getField(flyingClass, boolean.class, 1).getBoolean(packet);
-            } catch (IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            return false;
-        }
-
-        @Override
-        public boolean isLook() {
-            try {
-                return Reflection.getField(flyingClass, boolean.class, 2).getBoolean(packet);
-            } catch (IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            return true;
-        }
-    }
-
 }

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

@@ -0,0 +1,42 @@
+/*
+ * 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.in.helditemslot;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public final class WrappedPacketInHeldItemSlot extends WrappedPacket {
+    public WrappedPacketInHeldItemSlot(Object packet) {
+        super(packet);
+    }
+
+    /**
+     * Get the index of the item we currently have in hand.
+     * @return Item in hand Index
+     */
+    public int getCurrentSelectedSlot() {
+        return readInt(0);
+    }
+
+}

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

@@ -1,47 +1,58 @@
+/*
+ * 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.in.keepalive;
 
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
 
 public final class WrappedPacketInKeepAlive extends WrappedPacket {
-    private static Class<?> keepAliveClass;
-
-    static {
-        try {
-            keepAliveClass = NMSUtils.getNMSClass("PacketPlayInKeepAlive");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private long id;
+    private static boolean integerPresentInIndex0;
 
     public WrappedPacketInKeepAlive(final Object packet) {
         super(packet);
     }
 
-    @Override
-    protected void setup() {
-        try {
-            if (version.isHigherThan(ServerVersion.v_1_12)) {
-                this.id = Reflection.getField(keepAliveClass, long.class, 0).getLong(packet);
-            } else {
-                this.id = Reflection.getField(keepAliveClass, int.class, 0).getInt(packet);
-            }
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Client.KEEP_ALIVE;
+        integerPresentInIndex0 = Reflection.getField(packetClass, int.class, 0) != null;
     }
 
     /**
-     * Cast this long to an integer if you are using 1.7.10->1.12.2!
-     * In 1.13.2->1.15.2 a long is sent
+     * Get the ID response from the client.
      *
-     * @return
+     * You may cast this down to an int if you are on 1.7.10 - 1.12.2.
+     * On 1.13.2 - 1.16.3 a long is sent.
+     * @return response ID
      */
     public long getId() {
-        return id;
+        if(!integerPresentInIndex0) {
+            return readLong(0);
+        }
+        else {
+            return readInt(0);
+        }
     }
 }

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

@@ -0,0 +1,170 @@
+/*
+ * 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.in.settings;
+
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+
+import java.util.HashMap;
+
+public class WrappedPacketInSettings extends WrappedPacket {
+    private static Class<?> chatVisibilityEnumClass;
+
+    private static boolean isLowerThan_v_1_8;
+    private Object chatVisibilityEnumObj;
+    private HashMap<DisplayedSkinPart, Boolean> displayedSkinParts = new HashMap<>();
+
+    public WrappedPacketInSettings(final Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+
+        isLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
+
+        try {
+            chatVisibilityEnumClass = NMSUtils.getNMSClass("EnumChatVisibility");
+        } catch (ClassNotFoundException e) {
+            Class<?> entityHumanClass = NMSUtils.getNMSClassWithoutException("EntityHuman");
+            //They are just on an outdated version
+            assert entityHumanClass != null;
+            chatVisibilityEnumClass = SubclassUtil.getSubClass(entityHumanClass, "EnumChatVisibility");
+        }
+    }
+
+    /**
+     * Get language client setting
+     *
+     * @return String Locale
+     */
+    public String getLocale() {
+        return readString(0);
+    }
+
+    /**
+     * Get client view distance.
+     *
+     * @return View Distance
+     */
+    public int getViewDistance() {
+        return readInt(0);
+    }
+
+    /**
+     * Get Chat Visibility
+     *
+     * @return Chat Visibility
+     */
+    public ChatVisibility getChatVisibility() {
+        if (chatVisibilityEnumObj == null) {
+            chatVisibilityEnumObj = readObject(0, chatVisibilityEnumClass);
+        }
+        String enumValueAsString = chatVisibilityEnumObj.toString();
+        if (enumValueAsString.equals("FULL")) {
+            return ChatVisibility.ENABLED;
+        } else if (enumValueAsString.equals("SYSTEM")) {
+            return ChatVisibility.COMMANDS_ONLY;
+        } else {
+            return ChatVisibility.HIDDEN;
+        }
+    }
+
+    /**
+     * Is chat colors
+     *
+     * @return Chat Colors
+     */
+    public boolean isChatColors() {
+        return readBoolean(0);
+    }
+
+    /**
+     * Get Displayed skin parts.
+     * <p>
+     * It is possible for some keys to not exist.
+     * If that is the case, the server version is 1.7.10.
+     * 1.7.10 only sends the cape skin part.
+     *
+     * @return A map with a Skin Parts as a key, and a boolean as a value.
+     */
+    @Nullable
+    public HashMap<DisplayedSkinPart, Boolean> getDisplayedSkinPartsMap() {
+        if (displayedSkinParts.isEmpty()) {
+            if (isLowerThan_v_1_8) {
+                //in 1.7.10 only the cape display skin part is sent
+                boolean capeEnabled = readBoolean(1);
+                displayedSkinParts.put(DisplayedSkinPart.CAPE, capeEnabled);
+            } else {
+                //in 1.8, all the skin parts are sent
+                int skinPartFlags = readInt(1);
+                displayedSkinParts.put(DisplayedSkinPart.CAPE, (skinPartFlags & 0x01) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.JACKET, (skinPartFlags & 0x02) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.LEFT_SLEEVE, (skinPartFlags & 0x04) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.RIGHT_SLEEVE, (skinPartFlags & 0x08) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.LEFT_PANTS, (skinPartFlags & 0x10) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.RIGHT_PANTS, (skinPartFlags & 0x20) != 0);
+                displayedSkinParts.put(DisplayedSkinPart.HAT, (skinPartFlags & 0x40) != 0);
+            }
+        }
+        return displayedSkinParts;
+    }
+
+    /**
+     * Is the skin part enabled.
+     * <p>
+     * On 1.7.10, some skin parts will default to 'false' as 1.7.10
+     * only sends the 'cape' skin part.
+     *
+     * @param part The skin part to check the status of.
+     * @return Is the skin part enabled
+     */
+    public boolean isDisplaySkinPartEnabled(DisplayedSkinPart part) {
+        if(displayedSkinParts.isEmpty()) {
+            displayedSkinParts = getDisplayedSkinPartsMap();
+        }
+        //1.7.10, we will default the other skin parts to return false.
+        if (!displayedSkinParts.containsKey(part)) {
+            return false;
+        }
+        return displayedSkinParts.get(part);
+    }
+
+    /**
+     * Enum for the client chat visibility setting
+     */
+    public enum ChatVisibility {
+        ENABLED, COMMANDS_ONLY, HIDDEN
+    }
+
+    /**
+     * Enum for the client displayed skin parts settings
+     */
+    public enum DisplayedSkinPart {
+        CAPE, JACKET, LEFT_SLEEVE, RIGHT_SLEEVE, LEFT_PANTS, RIGHT_PANTS, HAT
+    }
+}

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

@@ -1,55 +1,73 @@
+/*
+ * 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.in.steervehicle;
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public class WrappedPacketInSteerVehicle extends WrappedPacket {
-    private static Class<?> packetClass;
-
-    static {
-        try {
-            packetClass = NMSUtils.getNMSClass("PacketPlayInSteerVehicle");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private float side, forward;
-    private boolean jump, unmount;
-
     public WrappedPacketInSteerVehicle(Object packet) {
         super(packet);
     }
 
-    @Override
-    protected void setup() {
-        try {
-            this.side = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
-            this.forward = Reflection.getField(packetClass, float.class, 1).getFloat(packet);
-
-            this.jump = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
-            this.unmount = Reflection.getField(packetClass, boolean.class, 1).getBoolean(packet);
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
-    //Positive side value means left, negative means right
+    /**
+     * Get the side value.
+     * <p>
+     * If positive, they are moving to the left, if negative, they are moving to the right.
+     *
+     * @return Side Value
+     */
     public float getSideValue() {
-        return side;
+        return readFloat(0);
     }
 
-    //Positive forward value means forward, negative is backwards
+    /**
+     * Get the forward value.
+     * <p>
+     * If positive, they are moving forward, if negative, they are moving backwards.
+     *
+     * @return Forward Value
+     */
     public float getForwardValue() {
-        return forward;
+        return readFloat(1);
     }
 
+    /**
+     * Is a Jump
+     *
+     * @return Is Jump
+     */
     public boolean isJump() {
-        return jump;
+        return readBoolean(0);
     }
 
+    /**
+     * Is an unmount
+     *
+     * @return Is Unmounting
+     */
     public boolean isUnmount() {
-        return unmount;
+        return readBoolean(1);
     }
 }

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

@@ -1,49 +1,60 @@
+/*
+ * 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.in.transaction;
 
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public final class WrappedPacketInTransaction extends WrappedPacket {
-    private static Class<?> packetClass;
-
-    static {
-        try {
-            packetClass = NMSUtils.getNMSClass("PacketPlayInTransaction");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
-    private int windowId;
-    private short actionNumber;
-    private boolean accepted;
-
     public WrappedPacketInTransaction(final Object packet) {
         super(packet);
     }
 
-    @Override
-    protected void setup() {
-        try {
-            this.windowId = Reflection.getField(packetClass, int.class, 0).getInt(packet);
-            this.actionNumber = Reflection.getField(packetClass, short.class, 0).getShort(packet);
-            this.accepted = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-
-    }
-
+    /**
+     * Get the window ID.
+     *
+     * @return Window ID
+     */
     public int getWindowId() {
-        return windowId;
+        return readInt(0);
     }
 
+    /**
+     * Get the action number.
+     *
+     * @return Action number
+     */
     public short getActionNumber() {
-        return actionNumber;
+        return readShort(0);
     }
 
+    /**
+     * Is transaction accepted.
+     *
+     * @return Transaction Accepted
+     */
     public boolean isAccepted() {
-        return accepted;
+        return readBoolean(0);
     }
 }

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/updatesign/WrappedPacketInUpdateSign.java

@@ -0,0 +1,129 @@
+/*
+ * 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.in.updatesign;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketInUpdateSign extends WrappedPacket {
+    private static boolean v_1_7_mode, strArrayMode;
+    private static Class<?> blockPosClass, iChatBaseComponentClass;
+
+    private Object blockPosObj;
+
+    public static void load() {
+        v_1_7_mode = Reflection.getField(PacketTypeClasses.Client.UPDATE_SIGN, int.class, 0) != null;
+        strArrayMode = Reflection.getField(PacketTypeClasses.Client.UPDATE_SIGN, String[].class, 0) != null;
+
+        try {
+            blockPosClass = NMSUtils.getNMSClass("BlockPosition");
+        } catch (ClassNotFoundException e) {
+            if (!v_1_7_mode) {
+                e.printStackTrace();
+            }
+        }
+        try {
+            iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public WrappedPacketInUpdateSign(Object packet) {
+        super(packet);
+    }
+
+    public int getX() {
+        if (v_1_7_mode) {
+            return readInt(0);
+        } else {
+            if (blockPosObj == null) {
+                blockPosObj = readObject(0, blockPosClass);
+
+            }
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
+        }
+    }
+
+    public int getY() {
+        if (v_1_7_mode) {
+            return readInt(1);
+        } else {
+            if (blockPosObj == null) {
+                blockPosObj = readObject(0, blockPosClass);
+
+            }
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
+        }
+    }
+
+    public int getZ() {
+        if (v_1_7_mode) {
+            return readInt(2);
+        } else {
+            if (blockPosObj == null) {
+                blockPosObj = readObject(0, blockPosClass);
+
+            }
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
+        }
+    }
+
+    public String[] getTextLines() {
+        if (strArrayMode) {
+            //1.7.10 and the newest versions use this
+            return readStringArray(0);
+        } else {
+            //1.8 uses this for example
+            Object[] iChatComponents = (Object[]) readAnyObject(1);
+            String[] lines = new String[iChatComponents.length];
+            for (int i = 0; i < iChatComponents.length; i++) {
+                lines[i] = WrappedPacketOutChat.
+                        toStringFromIChatBaseComponent(iChatComponents[i]);
+            }
+            return lines;
+        }
+    }
+}

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

@@ -1,65 +1,93 @@
+/*
+ * 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.in.useentity;
 
-import io.github.retrooper.packetevents.enums.minecraft.EntityUseAction;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 import org.bukkit.entity.Entity;
 
 public final class WrappedPacketInUseEntity extends WrappedPacket {
-    private static Class<?> useEntityClass, entityClass, enumEntityUseActionClass;
-
-    static {
-
-        try {
-            useEntityClass = NMSUtils.getNMSClass("PacketPlayInUseEntity");
-            entityClass = NMSUtils.getNMSClass("Entity");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            enumEntityUseActionClass = NMSUtils.getNMSClass("EnumEntityUseAction");
-        } catch (ClassNotFoundException e) {
-            //That is fine, it is probably a subclass
-            for (final Class<?> sub : useEntityClass.getDeclaredClasses()) {
-                if (sub.getSimpleName().equals("EnumEntityUseAction")) {
-                    enumEntityUseActionClass = sub;
-                    break;
-                }
-            }
-        }
-    }
-
-    private int entityId;
+    private static Class<?> enumEntityUseActionClass;
     private Entity entity;
-    private EntityUseAction action;
-
+    private int entityID = -1;
     public WrappedPacketInUseEntity(final Object packet) {
         super(packet);
     }
 
-    @Override
-    protected void setup() {
+    public static void load() {
+        //System.out.println("USE ENTITY HAS BEEN LOADED BROOOIOII");
+        Class<?> useEntityClass = NMSUtils.getNMSClassWithoutException("PacketPlayInUseEntity");
+        /*if(useEntityClass == null) {
+            System.out.println("failed to init use entity wtfffff");
+        }*/
         try {
-            this.entityId = Reflection.getField(useEntityClass, int.class, 0).getInt(packet);
-            this.entity = NMSUtils.getEntityById(this.entityId);
-            final Object useActionEnum = Reflection.getField(useEntityClass, enumEntityUseActionClass, 0).get(packet);
-            this.action = EntityUseAction.valueOf(useActionEnum.toString());
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
+            enumEntityUseActionClass = NMSUtils.getNMSClass("EnumEntityUseAction");
+        } catch (ClassNotFoundException e) {
+            //That is fine, it is probably a subclass
+            enumEntityUseActionClass = SubclassUtil.getSubClass(useEntityClass, "EnumEntityUseAction");
         }
     }
 
+
+    /**
+     * Lookup the associated entity by the ID that was sent in the packet.
+     * @return Entity
+     */
     public Entity getEntity() {
-        return entity;
+        if(entity != null) {
+            return entity;
+        }
+        return entity = NMSUtils.getEntityById(getEntityID());
     }
 
-    public int getEntityId() {
-        return entityId;
+    /**
+     * Get the ID of the entity.
+     * If you do not want to use {@link #getEntity()},
+     * you lookup the entity by yourself with this entity ID.
+     * @return Entity ID
+     */
+    public int getEntityID() {
+        if(entityID != -1) {
+            return entityID;
+        }
+        else {
+            return entityID = readInt(0);
+        }
     }
 
+    /**
+     * Get the associated action.
+     * @return Get EntityUseAction
+     */
     public EntityUseAction getAction() {
-        return action;
+        final Object useActionEnum = readObject(0, enumEntityUseActionClass);
+        return EntityUseAction.valueOf(useActionEnum.toString());
+    }
+
+    public enum EntityUseAction {
+        INTERACT, INTERACT_AT, ATTACK, INVALID
     }
 }

src/main/java/io/github/retrooper/packetevents/packetwrappers/in/vehiclemove/WrappedPacketInVehicleMove.java

@@ -0,0 +1,53 @@
+/*
+ * 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.in.vehiclemove;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public class WrappedPacketInVehicleMove extends WrappedPacket {
+    public WrappedPacketInVehicleMove(Object packet) {
+        super(packet);
+    }
+
+    public double getX() {
+        return readDouble(0);
+    }
+
+    public double getY() {
+        return readDouble(1);
+    }
+
+    public double getZ() {
+        return readDouble(2);
+    }
+
+    public float getYaw() {
+        return readFloat(0);
+    }
+
+    public float getPitch() {
+        return readFloat(1);
+    }
+}

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

@@ -0,0 +1,222 @@
+/*
+ * 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.in.windowclick;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+
+public class WrappedPacketInWindowClick extends WrappedPacket {
+    private static final HashMap<String, Integer> invClickTypeMapCache = new HashMap<>();
+    private static final HashMap<Integer, ArrayList<WindowClickType>> windowClickTypeCache = new HashMap<>();
+    private static Class<?> invClickTypeClass;
+    private static boolean isClickModePrimitive;
+    // TODO: All the fields below are useless cuz there is never a value assigned to them - change this
+    private int id;
+    private int slot;
+    private int button;
+    private short actionNumber;
+    private int mode;
+    private ItemStack clickedItem;
+
+    public WrappedPacketInWindowClick(Object packet) {
+        super(packet);
+    }
+
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Client.WINDOW_CLICK;
+        invClickTypeClass = NMSUtils.getNMSClassWithoutException("InventoryClickType");
+
+        invClickTypeMapCache.put("PICKUP", 0);
+        invClickTypeMapCache.put("QUICK_MOVE", 1);
+        invClickTypeMapCache.put("SWAP", 2);
+        invClickTypeMapCache.put("CLONE", 3);
+        invClickTypeMapCache.put("THROW", 4);
+        invClickTypeMapCache.put("QUICK_CRAFT", 5);
+        invClickTypeMapCache.put("PICKUP_ALL", 6);
+
+        //MODE 0
+        windowClickTypeCache.put(0, getArrayListOfWindowClickTypes(WindowClickType.LEFT_MOUSE_CLICK,
+                WindowClickType.RIGHT_MOUSE_CLICK));
+
+        //MODE 1
+        windowClickTypeCache.put(1, getArrayListOfWindowClickTypes(WindowClickType.SHIFT_LEFT_MOUSE_CLICK,
+                WindowClickType.SHIFT_RIGHT_MOUSE_CLICK));
+
+        //MODE 2
+        windowClickTypeCache.put(2, getArrayListOfWindowClickTypes(
+                WindowClickType.KEY_NUMBER1,
+                WindowClickType.KEY_NUMBER2,
+                WindowClickType.KEY_NUMBER3,
+                WindowClickType.KEY_NUMBER4,
+                WindowClickType.KEY_NUMBER5,
+                WindowClickType.KEY_NUMBER6,
+                WindowClickType.KEY_NUMBER7,
+                WindowClickType.KEY_NUMBER8,
+                WindowClickType.KEY_NUMBER9));
+
+        //MODE 3
+        windowClickTypeCache.put(3, getArrayListOfWindowClickTypes(WindowClickType.UNKNOWN, WindowClickType.UNKNOWN, WindowClickType.CREATIVE_MIDDLE_CLICK));
+
+        //MODE 4
+        windowClickTypeCache.put(4, getArrayListOfWindowClickTypes(WindowClickType.KEY_DROP,
+                WindowClickType.KEY_DROP_STACK));
+
+        //MODE 5
+        windowClickTypeCache.put(5, getArrayListOfWindowClickTypes(
+                WindowClickType.STARTING_LEFT_MOUSE_DRAG,
+                WindowClickType.ADD_SLOT_LEFT_MOUSE_DRAG,
+                WindowClickType.ENDING_LEFT_MOUSE_DRAG,
+                WindowClickType.UNKNOWN,
+                WindowClickType.STARTING_RIGHT_MOUSE_DRAG,
+                WindowClickType.ADD_SLOT_RIGHT_MOUSE_DRAG,
+                WindowClickType.CREATIVE_STARTING_MIDDLE_MOUSE_DRAG,
+                WindowClickType.ADD_SLOT_MIDDLE_MOUSE_DRAG,
+                WindowClickType.ENDING_MIDDLE_MOUSE_DRAG));
+
+        windowClickTypeCache.put(6, getArrayListOfWindowClickTypes(WindowClickType.DOUBLE_CLICK));
+        isClickModePrimitive = Reflection.getField(packetClass, int.class, 3) != null;
+        invClickTypeClass = NMSUtils.getNMSClassWithoutException("InventoryClickType");
+    }
+
+    private static ArrayList<WindowClickType> getArrayListOfWindowClickTypes(WindowClickType... types) {
+        ArrayList<WindowClickType> arrayList = new ArrayList<WindowClickType>(types.length);
+        arrayList.addAll(Arrays.asList(types));
+        return arrayList;
+    }
+
+    /**
+     * Get the Window ID.
+     * @return Get Window ID
+     */
+    public int getWindowID() {
+        return readInt(0);
+    }
+
+    /**
+     * Get the Window slot.
+     * @return Get Window Slot
+     */
+    public int getWindowSlot() {
+        return readInt(1);
+    }
+
+    /**
+     * Get the Window button.
+     * @return Get Window Button
+     */
+    public int getWindowButton() {
+        return readInt(2);
+    }
+
+    /**
+     * Get the action number.
+     * @return Get Action Number
+     */
+    public short getActionNumber() {
+        return readShort(0);
+    }
+
+    /**
+     * Get the window click type.
+     * @return Get Window Click Type
+     */
+    public WindowClickType getWindowClickType() {
+        if (windowClickTypeCache.get(mode) == null) {
+            return WindowClickType.UNKNOWN;
+        }
+        if (button + 1 > windowClickTypeCache.size()) {
+            return WindowClickType.UNKNOWN;
+        }
+
+        // TODO: This has no use cuz the fields used are never getting assigned a value to them
+        if (mode == 4) {
+            if (slot == -999) {
+                if (button == 0) {
+                    return WindowClickType.LEFT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING;
+                } else if (button == 1) {
+                    return WindowClickType.RIGHT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING;
+                }
+            }
+        }
+        return windowClickTypeCache.get(mode).get(button);
+    }
+
+    /**
+     * Get the Window mode.
+     * @return Get Window Mode.
+     */
+    public int getMode() {
+        if (isClickModePrimitive) {
+            return readInt(3);
+        } else {
+            return invClickTypeMapCache.get(readObject(5, invClickTypeClass).toString());
+        }
+    }
+
+    /**
+     * Get the clicked item.
+     * @return Get Clicked ItemStack
+     */
+    public ItemStack getClickedItem() {
+        Object nmsItemStack = readObject(0, NMSUtils.nmsItemStackClass);
+        return NMSUtils.toBukkitItemStack(nmsItemStack);
+    }
+
+    public enum WindowClickType {
+        LEFT_MOUSE_CLICK, RIGHT_MOUSE_CLICK,
+        SHIFT_LEFT_MOUSE_CLICK, SHIFT_RIGHT_MOUSE_CLICK,
+
+        CREATIVE_MIDDLE_CLICK, CREATIVE_STARTING_MIDDLE_MOUSE_DRAG,
+
+        KEY_NUMBER1, KEY_NUMBER2, KEY_NUMBER3, KEY_NUMBER4,
+        KEY_NUMBER5, KEY_NUMBER6, KEY_NUMBER7, KEY_NUMBER8,
+        KEY_NUMBER9, KEY_DROP, KEY_DROP_STACK,
+
+        LEFT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING,
+        RIGHT_CLICK_OUTSIDE_WINDOW_HOLDING_NOTHING,
+
+        STARTING_LEFT_MOUSE_DRAG,
+        STARTING_RIGHT_MOUSE_DRAG,
+
+        ADD_SLOT_LEFT_MOUSE_DRAG,
+        ADD_SLOT_RIGHT_MOUSE_DRAG,
+        ADD_SLOT_MIDDLE_MOUSE_DRAG,
+
+        ENDING_LEFT_MOUSE_DRAG,
+        ENDING_RIGHT_MOUSE_DRAG,
+        ENDING_MIDDLE_MOUSE_DRAG,
+
+        DOUBLE_CLICK,
+
+        UNKNOWN
+    }
+}

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

@@ -0,0 +1,45 @@
+/*
+ * 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;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public class WrappedPacketLoginHandshake extends WrappedPacket {
+    public WrappedPacketLoginHandshake(Object packet) {
+        super(packet);
+    }
+
+    public int getProtocolVersion() {
+        return readInt(0);
+    }
+
+    public String getHostName() {
+        return readString(0);
+    }
+
+    public int getPort() {
+        return readInt(1);
+    }
+}

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

@@ -0,0 +1,42 @@
+/*
+ * 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;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public class WrappedPacketLoginInCustomPayload extends WrappedPacket {
+    public WrappedPacketLoginInCustomPayload(Object packet) {
+        super(packet);
+    }
+
+
+    /* TODO wrappers
+     * net.minecraft.server.v1_16_R2.PacketLoginInCustomPayload inCP;
+     * net.minecraft.server.v1_16_R2.PacketLoginOutCustomPayload outCP;
+     * net.minecraft.server.v1_16_R2.PacketPlayOutLogin outLogin;
+     * Find out about the Status Response packet
+     */
+}
+

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

@@ -0,0 +1,40 @@
+/*
+ * 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;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+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 WrappedPacketLoginInStart extends WrappedPacket {
+    public WrappedPacketLoginInStart(Object packet) {
+        super(packet);
+    }
+
+    public WrappedGameProfile getGameProfile() {
+        return GameProfileUtil.getWrappedGameProfile(readObject(0, NMSUtils.gameProfileClass));
+    }
+}

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

@@ -0,0 +1,41 @@
+/*
+ * 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;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public class WrapppedPacketLoginInEncryptionBegin extends WrappedPacket {
+    public WrapppedPacketLoginInEncryptionBegin(Object packet) {
+        super(packet);
+    }
+
+    public byte[] getPublicKey() {
+        return readByteArray(0);
+    }
+
+    public byte[] getVerifyToken() {
+        return readByteArray(1);
+    }
+}

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

@@ -0,0 +1,40 @@
+/*
+ * 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.out;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+
+public class WrappedPacketLoginDisconnect extends WrappedPacket {
+    public WrappedPacketLoginDisconnect(Object packet) {
+        super(packet);
+    }
+
+    public String getReason() {
+        Object iChatBaseComponent = readObject(0, NMSUtils.iChatBaseComponentClass);
+        return WrappedPacketOutChat.toStringFromIChatBaseComponent(iChatBaseComponent);
+    }
+}

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

@@ -0,0 +1,47 @@
+/*
+ * 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.out;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+import java.security.PublicKey;
+
+public class WrappedPacketLoginOutEncryptionBegin extends WrappedPacket {
+    public WrappedPacketLoginOutEncryptionBegin(Object packet) {
+        super(packet);
+    }
+
+    public String getEncodedString() {
+        return readString(0);
+    }
+
+    public PublicKey getPublicKey() {
+        return (PublicKey) readObject(1, PublicKey.class);
+    }
+
+    public byte[] getByteArray() {
+        return readByteArray(0);
+    }
+}

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

@@ -0,0 +1,41 @@
+/*
+ * 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.out;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+//This packet does not exist on 1.7.10
+public class WrappedPacketLoginOutSetCompression extends WrappedPacket {
+    public WrappedPacketLoginOutSetCompression(Object packet) {
+        super(packet);
+    }
+
+    /**
+     * Maximum size of a packet before it can be compressed.
+     */
+    public int getThreshold() {
+        return readInt(0);
+    }
+}

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

@@ -0,0 +1,40 @@
+/*
+ * 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.out;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+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(Object packet) {
+        super(packet);
+    }
+
+    public WrappedGameProfile getGameProfile() {
+        return GameProfileUtil.getWrappedGameProfile(readObject(0, NMSUtils.gameProfileClass));
+    }
+}

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

@@ -1,7 +1,31 @@
+/*
+ * 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.out.abilities;
 
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
@@ -26,13 +50,13 @@ final class PlayerAbilitiesUtils {
     public static Object getPlayerAbilities(final boolean isVulnerable, final boolean isFlying, final boolean allowFlight, final boolean canBuildInstantly,
                                             final float flySpeed, final float walkSpeed) throws IllegalAccessException, InvocationTargetException, InstantiationException {
         final Object instance = playerAbilitiesConstructor.newInstance();
-        Reflection.getField(playerAbilitiesClass, boolean.class, 0).setBoolean(instance, isVulnerable);
-        Reflection.getField(playerAbilitiesClass, boolean.class, 1).setBoolean(instance, isFlying);
-        Reflection.getField(playerAbilitiesClass, boolean.class, 2).setBoolean(instance, allowFlight);
-        Reflection.getField(playerAbilitiesClass, boolean.class, 3).setBoolean(instance, canBuildInstantly);
-
-        Reflection.getField(playerAbilitiesClass, float.class, 0).setFloat(instance, flySpeed);
-        Reflection.getField(playerAbilitiesClass, float.class, 1).setFloat(instance, walkSpeed);
+        WrappedPacket wrapper = new WrappedPacket(instance);
+        wrapper.writeBoolean(0, isVulnerable);
+        wrapper.writeBoolean(1, isFlying);
+        wrapper.writeBoolean(2, allowFlight);
+        wrapper.writeBoolean(3, canBuildInstantly);
+        wrapper.writeFloat(0, flySpeed);
+        wrapper.writeFloat(1, walkSpeed);
         return instance;
     }
 }

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

@@ -1,41 +1,50 @@
+/*
+ * 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.out.abilities;
 
-import io.github.retrooper.packetevents.packetwrappers.Sendable;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
-public final class WrappedPacketOutAbilities extends WrappedPacket implements Sendable {
-    private static Class<?> packetClass;
+public final class WrappedPacketOutAbilities extends WrappedPacket implements SendableWrapper {
     private static Constructor<?> packetConstructor;
-
-    static {
-        try {
-            packetClass = NMSUtils.getNMSClass("PacketPlayOutAbilities");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            packetConstructor = packetClass.getConstructor(PlayerAbilitiesUtils.playerAbilitiesClass);
-        } catch (NoSuchMethodException e) {
-            e.printStackTrace();
-        }
-    }
-
+    private boolean isListening;
     private boolean vulnerable, flying, allowFlight, instantBuild;
     private float flySpeed, walkSpeed;
 
     public WrappedPacketOutAbilities(final Object packet) {
         super(packet);
+        isListening = true;
     }
 
     public WrappedPacketOutAbilities(final boolean isVulnerable, final boolean isFlying, final boolean allowFlight, final boolean canBuildInstantly,
                                      final float flySpeed, final float walkSpeed) {
-        super(null);
+        super();
         this.vulnerable = isVulnerable;
         this.flying = isFlying;
         this.allowFlight = allowFlight;
@@ -44,44 +53,92 @@ public final class WrappedPacketOutAbilities extends WrappedPacket implements Se
         this.walkSpeed = walkSpeed;
     }
 
-    @Override
-    protected void setup() {
-        try {
-            this.vulnerable = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
-            this.flying = Reflection.getField(packetClass, boolean.class, 1).getBoolean(packet);
-            this.allowFlight = Reflection.getField(packetClass, boolean.class, 2).getBoolean(packet);
-            this.instantBuild = Reflection.getField(packetClass, boolean.class, 3).getBoolean(packet);
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Server.ABILITIES;
 
-            this.flySpeed = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
-            this.walkSpeed = Reflection.getField(packetClass, float.class, 0).getFloat(packet);
-        } catch (IllegalAccessException e) {
+        try {
+            packetConstructor = packetClass.getConstructor(PlayerAbilitiesUtils.playerAbilitiesClass);
+        } catch (NoSuchMethodException e) {
             e.printStackTrace();
         }
-
     }
 
+    /**
+     * Should the client be vulnerable?
+     *
+     * @return Is Vulnerable
+     */
     public boolean isVulnerable() {
-        return vulnerable;
+        if (isListening) {
+            return readBoolean(0);
+        } else {
+            return vulnerable;
+        }
     }
 
+    /**
+     * Should the client be flying?
+     *
+     * @return Is Flying
+     */
     public boolean isFlying() {
-        return flying;
+        if (isListening) {
+            return readBoolean(1);
+        } else {
+            return flying;
+        }
     }
 
+    /**
+     * Should the client be allowed to fly?
+     *
+     * @return Is Allowed To Fly
+     */
     public boolean isFlightAllowed() {
-        return allowFlight;
+        if (isListening) {
+            return readBoolean(2);
+        } else {
+            return allowFlight;
+        }
     }
 
+    /**
+     * Should the client be able to build instantly?
+     *
+     * @return Is Allowed To Build Instantly
+     */
     public boolean canInstantlyBuild() {
-        return instantBuild;
+        if (isListening) {
+            return readBoolean(3);
+        } else {
+            return instantBuild;
+        }
     }
 
+    /**
+     * Get the client's defined fly speed.
+     *
+     * @return Get Fly Speed
+     */
     public float getFlySpeed() {
-        return flySpeed;
+        if (isListening) {
+            return readFloat(0);
+        } else {
+            return flySpeed;
+        }
     }
 
+    /**
+     * Get the client's defined walk speed.
+     *
+     * @return Get Walk Speed
+     */
     public float getWalkSpeed() {
-        return walkSpeed;
+        if (isListening) {
+            return readFloat(1);
+        } else {
+            return walkSpeed;
+        }
     }
 
     @Override

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

@@ -1,22 +1,66 @@
+/*
+ * 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.out.animation;
 
-import io.github.retrooper.packetevents.enums.minecraft.EntityAnimationType;
-import io.github.retrooper.packetevents.packetwrappers.Sendable;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import org.bukkit.entity.Entity;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.Map;
 
-public final class WrappedPacketOutAnimation extends WrappedPacket implements Sendable {
-    private static Class<?> animationClass, nmsEntityClass;
+public final class WrappedPacketOutAnimation extends WrappedPacket implements SendableWrapper {
+    private static Class<?> nmsEntityClass;
     private static Constructor<?> animationConstructor;
 
-    static {
+    private static final Map<Integer, EntityAnimationType> cachedAnimationIDS = new HashMap<>();
+    private static final Map<EntityAnimationType, Integer> cachedAnimations = new HashMap<>();
+    private Entity entity;
+    private int entityID = -1;
+    private EntityAnimationType type;
+    private boolean isListening = false;
+
+    public WrappedPacketOutAnimation(final Object packet) {
+        super(packet);
+        isListening = true;
+    }
+
+    public WrappedPacketOutAnimation(final Entity target, final EntityAnimationType type) {
+        super();
+        this.entityID = target.getEntityId();
+        this.entity = target;
+        this.type = type;
+    }
+
+    public static void load() {
+        Class<?> animationClass = PacketTypeClasses.Server.ANIMATION;
         try {
-            animationClass = NMSUtils.getNMSClass("PacketPlayOutAnimation");
             nmsEntityClass = NMSUtils.getNMSClass("Entity");
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
@@ -27,53 +71,64 @@ public final class WrappedPacketOutAnimation extends WrappedPacket implements Se
         } catch (NoSuchMethodException e) {
             e.printStackTrace();
         }
+        cachedAnimationIDS.put(0, EntityAnimationType.SWING_MAIN_ARM);
+        cachedAnimationIDS.put(1, EntityAnimationType.TAKE_DAMAGE);
+        cachedAnimationIDS.put(2, EntityAnimationType.LEAVE_BED);
+        cachedAnimationIDS.put(3, EntityAnimationType.SWING_OFFHAND);
+        cachedAnimationIDS.put(4, EntityAnimationType.CRITICAL_EFFECT);
+        cachedAnimationIDS.put(5, EntityAnimationType.MAGIC_CRITICAL_EFFECT);
+
+        cachedAnimations.put(EntityAnimationType.SWING_MAIN_ARM, 0);
+        cachedAnimations.put(EntityAnimationType.TAKE_DAMAGE, 1);
+        cachedAnimations.put(EntityAnimationType.LEAVE_BED, 2);
+        cachedAnimations.put(EntityAnimationType.SWING_OFFHAND, 3);
+        cachedAnimations.put(EntityAnimationType.CRITICAL_EFFECT, 4);
+        cachedAnimations.put(EntityAnimationType.MAGIC_CRITICAL_EFFECT, 5);
     }
 
-    private Entity entity;
-    private int entityID;
-    private EntityAnimationType type;
-
-    public WrappedPacketOutAnimation(final Object packet) {
-        super(packet);
-    }
-
-    public WrappedPacketOutAnimation(final Entity target, final EntityAnimationType type) {
-        super(null);
-        this.entityID = target.getEntityId();
-        this.entity = target;
-        this.type = type;
-    }
-
-    @Override
-    protected void setup() {
-        try {
-            //a - ID
-            //b - TYPE
-            this.entityID = Reflection.getField(animationClass, int.class, 0).getInt(packet);
-            this.entity = NMSUtils.getEntityById(this.entityID);
-            this.type = EntityAnimationType.get(Reflection.getField(animationClass, int.class, 1).getInt(packet));
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-
-    }
-
+    /**
+     * Lookup the associated entity by the ID that was sent in the packet.
+     *
+     * @return Entity
+     */
     public Entity getEntity() {
-        return this.entity;
+        if (entity != null) {
+            return entity;
+        }
+        return entity = NMSUtils.getEntityById(getEntityId());
     }
 
+    /**
+     * Get the ID of the entity.
+     * If you do not want to use {@link #getEntity()},
+     * you lookup the entity by yourself with this entity ID.
+     *
+     * @return Entity ID
+     */
     public int getEntityId() {
-        return this.entityID;
+        if (entityID == -1) {
+            entityID = readInt(0);
+        }
+        return entityID;
     }
 
+    /**
+     * Get the entity animation type.
+     *
+     * @return Get Entity Animation Type
+     */
     public EntityAnimationType getAnimationType() {
-        return type;
+        if (isListening) {
+            return cachedAnimationIDS.get(readInt(1));
+        } else {
+            return type;
+        }
     }
 
     @Override
     public Object asNMSPacket() {
         final Object nmsEntity = NMSUtils.getNMSEntity(this.entity);
-        final int index = type.getIndex();
+        final int index = cachedAnimations.get(type);
         try {
             return animationConstructor.newInstance(nmsEntity, index);
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
@@ -81,4 +136,8 @@ public final class WrappedPacketOutAnimation extends WrappedPacket implements Se
         }
         return null;
     }
+
+    public enum EntityAnimationType {
+        SWING_MAIN_ARM, TAKE_DAMAGE, LEAVE_BED, SWING_OFFHAND, CRITICAL_EFFECT, MAGIC_CRITICAL_EFFECT
+    }
 }

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

@@ -1,20 +1,96 @@
+/*
+ * 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.out.chat;
 
-import io.github.retrooper.packetevents.packetwrappers.Sendable;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.annotations.Beta;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.UUID;
 
-public final class WrappedPacketOutChat extends WrappedPacket implements Sendable {
+/**
+ * This wrapper MIGHT not be stable
+ */
+@Beta
+public final class WrappedPacketOutChat extends WrappedPacket implements SendableWrapper {
     private static Constructor<?> chatClassConstructor;
-    private static Class<?> chatClass, iChatBaseComponentClass, chatSerializerClass;
+    private static Class<?> packetClass, iChatBaseComponentClass, chatSerializerClass, chatMessageTypeEnum;
+    private static Method chatMessageTypeCreatorMethod;
+    //0 = IChatBaseComponent, Byte
+    //1 = IChatBaseComponent, Int
+    //2 = IChatBaseComponent, ChatMessageType
+    //3 = IChatBaseComponent, ChatMessageType, UUID
+    private static byte constructorMode;
 
-    static {
+    //0 = Byte
+    //1 = Byte, Boolean
+    private static byte chatTypeMessageEnumConstructorMode;
+    private static final HashMap<ChatPosition, Byte> cachedChatPositions = new HashMap<>();
+    private static final HashMap<Byte, ChatPosition> cachedChatPositionIntegers = new HashMap<>();
+    private static final HashMap<String, Byte> cachedChatMessageTypeIntegers = new HashMap<>();
+    private String message;
+    private ChatPosition chatPosition;
+    private UUID uuid;
+    private boolean isListening = false;
+
+    @Deprecated
+    public WrappedPacketOutChat(String message) {
+        this(message, null);
+    }
+
+    public WrappedPacketOutChat(final Object packet) {
+        super(packet);
+        isListening = true;
+    }
+
+    public WrappedPacketOutChat(String message, UUID uuid) {
+        this(message, ChatPosition.CHAT, uuid);
+    }
+
+    public WrappedPacketOutChat(String message, ChatPosition chatPosition, UUID uuid) {
+        this.uuid = uuid;
+        this.message = message;
+        this.chatPosition = chatPosition;
+    }
+
+    public enum ChatPosition {
+        CHAT, SYSTEM_MESSAGE, GAME_INFO
+    }
+
+
+    public static void load() {
         try {
-            chatClass = NMSUtils.getNMSClass("PacketPlayOutChat");
+            packetClass = PacketTypeClasses.Server.CHAT;
             iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
@@ -25,27 +101,65 @@ public final class WrappedPacketOutChat extends WrappedPacket implements Sendabl
             chatSerializerClass = NMSUtils.getNMSClass("ChatSerializer");
         } catch (ClassNotFoundException e) {
             //That is fine, it is probably a subclass
-            chatSerializerClass = Reflection.getSubClass(iChatBaseComponentClass, "ChatSerializer");
+            chatSerializerClass = SubclassUtil.getSubClass(iChatBaseComponentClass, "ChatSerializer");
         }
 
+
+        boolean isVeryOutdated = false;
         try {
-            chatClassConstructor = chatClass.getConstructor(iChatBaseComponentClass);
-        } catch (NoSuchMethodException e) {
-            e.printStackTrace();
+            chatMessageTypeEnum = NMSUtils.getNMSClass("ChatMessageType");
+        } catch (ClassNotFoundException e) {
+            isVeryOutdated = true;
         }
 
+        if (!isVeryOutdated) {
+            chatMessageTypeCreatorMethod = Reflection.getMethod(chatMessageTypeEnum, 0, byte.class);
+
+            try {
+                chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, chatMessageTypeEnum);
+                constructorMode = 2;
+            } catch (NoSuchMethodException e) {
+                //Just a much newer version(1.16.x and above right now)
+                try {
+                    chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, chatMessageTypeEnum, UUID.class);
+                    constructorMode = 3;
+                } catch (NoSuchMethodException e2) {
+                    //Failed to resolve the constructor
+                    e2.printStackTrace();
+                }
+            }
+        } else {
+            try {
+                chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, byte.class);
+                constructorMode = 0;
+            } catch (NoSuchMethodException e) {
+                //That is fine, they are most likely on an older version.
+                try {
+                    chatClassConstructor = packetClass.getConstructor(iChatBaseComponentClass, int.class);
+                    constructorMode = 1;
+                } catch (NoSuchMethodException e2) {
+                    e2.printStackTrace();
+                }
+            }
+        }
+
+        cachedChatPositions.put(ChatPosition.CHAT, (byte) 0);
+        cachedChatPositions.put(ChatPosition.SYSTEM_MESSAGE, (byte) 1);
+        cachedChatPositions.put(ChatPosition.GAME_INFO, (byte) 2);
+
+        cachedChatPositionIntegers.put((byte) 0, ChatPosition.CHAT);
+        cachedChatPositionIntegers.put((byte) 1, ChatPosition.SYSTEM_MESSAGE);
+        cachedChatPositionIntegers.put((byte) 2, ChatPosition.GAME_INFO);
+
+
+        cachedChatMessageTypeIntegers.put("CHAT", (byte) 0);
+        cachedChatMessageTypeIntegers.put("SYSTEM", (byte) 1);
+        cachedChatMessageTypeIntegers.put("GAME_INFO", (byte) 2);
 
     }
 
-    private String message;
-
-    public WrappedPacketOutChat(final Object packet) {
-        super(packet);
-    }
-
-    public WrappedPacketOutChat(final String message) {
-        super(null);
-        this.message = "{\"text\": \"" + message + "\"}";
+    public static String fromStringToJSON(String message) {
+        return "{\"text\": \"" + message + "\"}";
     }
 
     public static String toStringFromIChatBaseComponent(Object obj) {
@@ -66,32 +180,107 @@ public final class WrappedPacketOutChat extends WrappedPacket implements Sendabl
         return null;
     }
 
-
-    @Override
-    protected void setup() {
-        try {
-            final Object iChatBaseObj = Reflection.getField(chatClass, iChatBaseComponentClass, 0).get(packet);
-
-            final Object contentString = Reflection.getMethod(iChatBaseComponentClass, String.class, 0).invoke(iChatBaseObj);
-
-            this.message = contentString.toString();
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-    }
-
     @Override
     public Object asNMSPacket() {
-        try {
-            return chatClassConstructor.newInstance(toIChatBaseComponent(this.message));
-        } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
-            e.printStackTrace();
+        int integerChatPos = cachedChatPositions.get(chatPosition);
+        Object chatMessageTypeInstance = null;
+        if (chatMessageTypeEnum != null) {
+            if (chatTypeMessageEnumConstructorMode == 0) {
+                try {
+                    chatMessageTypeInstance = chatMessageTypeCreatorMethod.invoke(null, (byte) integerChatPos);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+            } else if (chatTypeMessageEnumConstructorMode == 1) {
+                try {
+                    chatMessageTypeInstance = chatMessageTypeCreatorMethod.invoke(null, (byte) integerChatPos);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        switch (constructorMode) {
+            case 0:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), (byte) integerChatPos);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 1:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), integerChatPos);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 2:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), chatMessageTypeInstance);
+                } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 3:
+                try {
+                    return chatClassConstructor.newInstance(toIChatBaseComponent(this.message), chatMessageTypeInstance, uuid);
+                } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+                break;
         }
-
         return null;
     }
 
+    /**
+     * Get the message.
+     * @return Get String Message
+     */
     public String getMessage() {
-        return this.message;
+        if(isListening) {
+            final Object iChatBaseObj = readObject(0, iChatBaseComponentClass);
+
+            try {
+                Object contentString = Reflection.getMethod(iChatBaseComponentClass, String.class, 0).invoke(iChatBaseObj);
+                return contentString.toString();
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return null;
+        }
+        else {
+            return message;
+        }
     }
+
+    /**
+     * Get the chat position.
+     *
+     * On 1.7.10, Only CHAT and SYSTEM_MESSAGE exist.
+     * If an invalid chat position is sent, it will be defaulted it to CHAT.
+     * @return ChatPosition
+     */
+    public ChatPosition getChatPosition() {
+        if(isListening) {
+            byte chatPosInteger = 0;
+            switch (constructorMode) {
+                case 0:
+                    chatPosInteger = readByte(0);
+                    break;
+                case 1:
+                    chatPosInteger = (byte) readInt(0);
+                    break;
+                case 2:
+                case 3:
+                    Object chatTypeEnumInstance = readObject(0, chatMessageTypeEnum);
+                    chatPosInteger = cachedChatMessageTypeIntegers.get(chatTypeEnumInstance.toString());
+                    break;
+            }
+            return cachedChatPositionIntegers.get(chatPosInteger);
+        }
+        else {
+            return chatPosition;
+        }
+    }
+
 }

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

@@ -0,0 +1,226 @@
+/*
+ * 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.out.custompayload;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.bytebuf.ByteBufUtil;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Modifier;
+
+public class WrappedPacketOutCustomPayload extends WrappedPacket implements SendableWrapper {
+    private static Constructor<?> constructor;
+    private static Constructor<?> packetDataSerializerConstructor;
+    private static Constructor<?> minecraftKeyConstructor;
+    private static Class<?> byteBufClass;
+    private static Class<?> packetDataSerializerClass;
+    private static Class<?> minecraftKeyClass;
+    private static int minecraftKeyIndexInClass;
+
+    private static byte constructorMode = 0;
+    private boolean isListening = false;
+
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Server.CUSTOM_PAYLOAD;
+        packetDataSerializerClass = NMSUtils.getNMSClassWithoutException("PacketDataSerializer");
+        minecraftKeyClass = NMSUtils.getNMSClassWithoutException("MinecraftKey");
+
+        try {
+            byteBufClass = NMSUtils.getNettyClass("buffer.ByteBuf");
+        } catch (ClassNotFoundException ignored) {
+
+        }
+        try {
+            packetDataSerializerConstructor = packetDataSerializerClass.getConstructor(byteBufClass);
+        } catch (NullPointerException e) {
+            //Nothing
+        } catch (NoSuchMethodException e) {
+            //also nothing
+        }
+
+        try {
+            if (minecraftKeyClass != null) {
+                minecraftKeyConstructor = minecraftKeyClass.getConstructor(String.class);
+            }
+        } catch (NoSuchMethodException e) {
+            //Nothing
+        }
+
+        //Constructors:
+
+        //String, byte[]
+
+        //String, PacketDataSerializer
+
+        //MinecraftKey, PacketDataSerializer
+        try {
+            //1.7 constructor
+            constructor = packetClass.getConstructor(String.class, byte[].class);
+            constructorMode = 0;
+        } catch (NoSuchMethodException e) {
+            //That's fine, just a newer version
+            try {
+                constructor = packetClass.getConstructor(String.class, packetDataSerializerClass);
+                constructorMode = 1;
+            } catch (NoSuchMethodException e2) {
+                //That's fine, just an even newer version
+                try {
+                    //Minecraft key exists
+
+                    for (int i = 0; i < packetClass.getDeclaredFields().length; i++) {
+                        Field f = packetClass.getDeclaredFields()[i];
+                        if (!Modifier.isStatic(f.getModifiers())) {
+                            minecraftKeyIndexInClass = i;
+                            break;
+                        }
+                    }
+                    constructor = packetClass.getConstructor(minecraftKeyClass, packetDataSerializerClass);
+                    constructorMode = 2;
+                } catch (NoSuchMethodException e3) {
+                    throw new IllegalStateException("PacketEvents is unable to resolve the PacketPlayOutCustomPayload constructor.");
+                }
+            }
+        }
+    }
+
+    private String tag;
+    private byte[] data;
+
+    public WrappedPacketOutCustomPayload(String tag, byte[] data) {
+        this.tag = tag;
+        this.data = data;
+    }
+
+
+    public WrappedPacketOutCustomPayload(Object packet) {
+        super(packet);
+        isListening = true;
+    }
+
+    @Override
+    protected void setup() {
+        switch (constructorMode) {
+            case 0:
+                this.tag = readString(0);
+                this.data = readByteArray(0);
+                break;
+            case 1:
+                this.tag = readString(0);
+                Object dataSerializer = readObject(0, packetDataSerializerClass);
+                WrappedPacket byteBufWrapper = new WrappedPacket(dataSerializer);
+
+                Object byteBuf = byteBufWrapper.readObject(0, byteBufClass);
+
+                this.data = ByteBufUtil.getBytes(byteBuf);
+                break;
+            case 2:
+                Object minecraftKey = readObject(minecraftKeyIndexInClass, minecraftKeyClass);
+                WrappedPacket minecraftKeyWrapper = new WrappedPacket(minecraftKey);
+                this.tag = minecraftKeyWrapper.readString(1);
+                Object dataSerializer2 = readObject(0, packetDataSerializerClass);
+                WrappedPacket byteBuf2Wrapper = new WrappedPacket(dataSerializer2);
+                Object byteBuf2 = byteBuf2Wrapper.readObject(0, byteBufClass);
+                this.data = ByteBufUtil.getBytes(byteBuf2);
+                break;
+        }
+    }
+
+    public String getTag() {
+        if(isListening) {
+            switch(constructorMode) {
+                case 0:
+                case 1:
+                    return readString(0);
+                case 2:
+                    Object minecraftKey = readObject(minecraftKeyIndexInClass, minecraftKeyClass);
+                    WrappedPacket minecraftKeyWrapper = new WrappedPacket(minecraftKey);
+                    return minecraftKeyWrapper.readString(1);
+            }
+        }
+        else {
+            return tag;
+        }
+        return null;
+    }
+
+    public byte[] getData() {
+        if(isListening) {
+            switch(constructorMode) {
+                case 0:
+                    return readByteArray(0);
+                case 1:
+                case 2:
+                    Object dataSerializer = readObject(0, packetDataSerializerClass);
+                    WrappedPacket byteBufWrapper = new WrappedPacket(dataSerializer);
+
+                    Object byteBuf = byteBufWrapper.readObject(0, byteBufClass);
+
+                    return ByteBufUtil.getBytes(byteBuf);
+            }
+        }
+        else {
+            return data;
+        }
+        return null;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        Object byteBufObject = ByteBufUtil.copiedBuffer(data);
+        switch (constructorMode) {
+            case 0:
+                try {
+                    return constructor.newInstance(tag, data);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 1:
+                try {
+                    Object dataSerializer = packetDataSerializerConstructor.newInstance(byteBufObject);
+                    return constructor.newInstance(tag, dataSerializer);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+            case 2:
+
+                try {
+                    Object minecraftKey = minecraftKeyConstructor.newInstance(tag);
+                    Object dataSerializer = packetDataSerializerConstructor.newInstance(byteBufObject);
+                    return constructor.newInstance(minecraftKey, dataSerializer);
+                } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+                    e.printStackTrace();
+                }
+                break;
+        }
+        return null;
+    }
+}

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

@@ -1,90 +1,264 @@
+/*
+ * 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.out.entity;
 
-import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.reflectionutils.Reflection;
-import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+import org.bukkit.entity.Entity;
 
-public class WrappedPacketOutEntity extends WrappedPacket {
-    private int entityId;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutEntity extends WrappedPacket implements SendableWrapper {
+    //Byte = 1.7.10->1.8.8, Int = 1.9->1.15.x, Short = 1.16.x
+    private static byte mode; //byte = 0, int = 1, short = 2
+    private static double dXYZDivisor;
+    private static int yawByteIndex;
+    private static int pitchByteIndex = 1;
+    private Entity entity;
+    private boolean isListening;
+    private static Constructor<?> entityPacketConstructor;
+    private int entityID;
     private double deltaX, deltaY, deltaZ;
-    private byte yaw, pitch;
+    private byte pitch, yaw;
     private boolean onGround;
+
     public WrappedPacketOutEntity(Object packet) {
         super(packet);
+        isListening = true;
+    }
+
+    public WrappedPacketOutEntity(int entityID, double deltaX, double deltaY, double deltaZ,
+                                  byte pitch, byte yaw, boolean onGround) {
+        this.entityID = entityID;
+        this.deltaX = deltaX;
+        this.deltaY = deltaY;
+        this.deltaZ = deltaZ;
+        this.pitch = pitch;
+        this.yaw = yaw;
+        this.onGround = onGround;
+        //Get entity player then pass it into the packetplayoutnamedentityspawn!
+      //  net.minecraft.server.v1_7_R4.EntityPlayer cp = null;
+        //net.minecraft.server.v1_7_R4.PacketPlayOutNamedEntitySpawn es = new net.minecraft.server.v1_7_R4.PacketPlayOutNamedEntitySpawn(cp);
+    }
+
+    public WrappedPacketOutEntity(Entity entity, double deltaX, double deltaY, double deltaZ,
+                                  byte pitch, byte yaw, boolean onGround) {
+        this(entity.getEntityId(), deltaX, deltaY, deltaZ, pitch, yaw, onGround);
+    }
+
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Server.ENTITY;
+
+        Field dxField = Reflection.getField(packetClass, 1);
+        assert dxField != null;
+        if (dxField.equals(Reflection.getField(packetClass, byte.class, 0))) {
+            mode = 0;
+            yawByteIndex = 3;
+            pitchByteIndex = 4;
+        } else if (dxField.equals(Reflection.getField(packetClass, int.class, 1))) {
+            mode = 1;
+        } else if (dxField.equals(Reflection.getField(packetClass, short.class, 0))) {
+            mode = 2;
+        }
+
+        if (mode == 0) {
+            dXYZDivisor = 32.0;
+        } else {
+            dXYZDivisor = 4096.0;
+        }
+        try {
+            entityPacketConstructor = packetClass.getConstructor(int.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    /**
+     * Get the pitch.
+     *
+     * @return Get Byte Pitch
+     */
+    public byte getPitch() {
+        if (isListening) {
+            return readByte(pitchByteIndex);
+        } else {
+            return pitch;
+        }
+    }
+
+    /**
+     * Get the Yaw.
+     *
+     * @return Get Byte Yaw
+     */
+    public byte getYaw() {
+        if (isListening) {
+            return readByte(yawByteIndex);
+        } else {
+            return yaw;
+        }
+    }
+
+    /**
+     * Get the Delta X
+     *
+     * @return Delta X
+     */
+    public double getDeltaX() {
+        if (isListening) {
+            switch (mode) {
+                case 0:
+                    return readByte(0) / dXYZDivisor;
+                case 1:
+                    return readInt(1) / dXYZDivisor;
+                case 2:
+                    return readShort(0) / dXYZDivisor;
+            }
+        } else {
+            return deltaX;
+        }
+        return 0.0;
+    }
+
+    /**
+     * Get the Delta Y
+     *
+     * @return Delta Y
+     */
+    public double getDeltaY() {
+        if (isListening) {
+            switch (mode) {
+                case 0:
+                    return readByte(1) / dXYZDivisor;
+                case 1:
+                    return readInt(2) / dXYZDivisor;
+                case 2:
+                    return readShort(1) / dXYZDivisor;
+            }
+        } else {
+            return deltaY;
+        }
+        return 0.0;
+    }
+
+    /**
+     * Get the Delta Z
+     *
+     * @return Delta Z
+     */
+    public double getDeltaZ() {
+        if (isListening) {
+            switch (mode) {
+                case 0:
+                    return readByte(2) / dXYZDivisor;
+                case 1:
+                    return readInt(3) / dXYZDivisor;
+                case 2:
+                    return readShort(2) / dXYZDivisor;
+            }
+        } else {
+            return deltaZ;
+        }
+        return 0.0;
+    }
+
+    /**
+     * Lookup the associated entity by the ID that was sent in the packet.
+     *
+     * @return Entity
+     */
+    public Entity getEntity() {
+        if (entity != null) {
+            return entity;
+        }
+        return entity = NMSUtils.getEntityById(getEntityId());
+    }
+
+    /**
+     * Get the ID of the entity.
+     * If you do not want to use {@link #getEntity()},
+     * you lookup the entity by yourself with this entity ID.
+     *
+     * @return Entity ID
+     */
+    public int getEntityId() {
+        if (entityID != -1) {
+            return entityID;
+        } else {
+            return entityID = readInt(0);
+        }
+    }
+
+    /**
+     * Is the entity on the ground?
+     *
+     * @return On Ground
+     */
+    public boolean isOnGround() {
+        if (isListening) {
+            return readBoolean(0);
+        } else {
+            return onGround;
+        }
     }
 
     @Override
-    protected void setup(){
+    public Object asNMSPacket() {
         try {
-            this.entityId = Reflection.getField(packetClass, int.class, 0).getInt(packet);
-            this.onGround = Reflection.getField(packetClass, boolean.class, 0).getBoolean(packet);
-            if(version.isLowerThan(ServerVersion.v_1_9)) {
-                 byte dX = Reflection.getField(packetClass, byte.class, 0).getByte(packet);
-                 byte dY = Reflection.getField(packetClass, byte.class, 1).getByte(packet);
-                byte dZ = Reflection.getField(packetClass, byte.class, 2).getByte(packet);
-
-                this.deltaX = dX / 32.0;
-                this.deltaY = dY / 32.0;
-                this.deltaZ = dZ / 32.0;
-
-                this.yaw = Reflection.getField(packetClass, byte.class, 3).getByte(packet);
-                this.pitch = Reflection.getField(packetClass, byte.class, 4).getByte(packet);
+            Object packetInstance = entityPacketConstructor.newInstance(entityID);
+            WrappedPacket wrapper = new WrappedPacket(packetInstance);
+            switch(mode) {
+                case 0:
+                    wrapper.writeByte(0, (byte)(deltaX * dXYZDivisor));
+                    wrapper.writeByte(1, (byte)(deltaY * dXYZDivisor));
+                    wrapper.writeByte(2, (byte)(deltaZ * dXYZDivisor));
+                    break;
+                case 1:
+                    wrapper.writeInt(1, (int)(deltaX * dXYZDivisor));
+                    wrapper.writeInt(2, (int)(deltaY * dXYZDivisor));
+                    wrapper.writeInt(3, (int)(deltaZ * dXYZDivisor));
+                    break;
+                case 2:
+                    wrapper.writeShort(0, (short)(deltaX * dXYZDivisor));
+                    wrapper.writeShort(1, (short)(deltaY * dXYZDivisor));
+                    wrapper.writeShort(2, (short)(deltaZ * dXYZDivisor));
+                    break;
             }
-            else {
-                short dX = Reflection.getField(packetClass, short.class, 0).getShort(packet);
-                short dY = Reflection.getField(packetClass, short.class, 1).getShort(packet);
-                short dZ = Reflection.getField(packetClass, short.class, 2).getShort(packet);
-
-                this.deltaX = dX / 4096.0;
-                this.deltaY = dY / 4096.0;
-                this.deltaZ = dZ / 4096.0;
-
-                this.yaw = Reflection.getField(packetClass, byte.class, 0).getByte(packet);
-                this.pitch = Reflection.getField(packetClass, byte.class, 1).getByte(packet);
-            }
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-
-    }
-
-
-    public byte getPitch() {
-        return pitch;
-    }
-
-    public byte getYaw() {
-        return yaw;
-    }
-
-    public double getDeltaZ() {
-        return deltaZ;
-    }
-
-    public double getDeltaY() {
-        return deltaY;
-    }
-
-    public double getDeltaX() {
-        return deltaX;
-    }
-
-    public int getEntityId() {
-        return entityId;
-    }
-
-    public boolean isOnGround() {
-        return onGround;
-    }
-
-    private static Class<?> packetClass;
-
-    static {
-        try {
-            packetClass = NMSUtils.getNMSClass("PacketPlayOutEntity");
-        } catch (ClassNotFoundException e) {
+            wrapper.writeByte(yawByteIndex, yaw);
+            wrapper.writeByte(pitchByteIndex, pitch);
+            wrapper.writeBoolean(0, onGround);
+            return packetInstance;
+        } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
             e.printStackTrace();
         }
+        return null;
     }
 }

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/entitymetadata/WrappedPacketOutEntityMetadata.java

@@ -0,0 +1,43 @@
+/*
+ * 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.out.entitymetadata;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+public class WrappedPacketOutEntityMetadata extends WrappedPacket {
+    private boolean isListening;
+    public WrappedPacketOutEntityMetadata(Object packet) {
+        super(packet);
+        isListening = true;
+    }
+
+    public int getEntityId() {
+        if (isListening) {
+            return readInt(0);
+        } else {
+            return 0;
+        }
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/entitystatus/WrappedPacketOutEntityStatus.java

@@ -0,0 +1,103 @@
+/*
+ * 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.out.entitystatus;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import org.bukkit.entity.Entity;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutEntityStatus extends WrappedPacket implements SendableWrapper {
+    private static Constructor<?> packetConstructor;
+
+    public static void load() {
+        try {
+            packetConstructor =
+                    PacketTypeClasses.Server.ENTITY_STATUS.getConstructor(NMSUtils.nmsEntityClass, byte.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private Entity entity;
+    private byte status;
+    private int entityID = -1;
+
+    public WrappedPacketOutEntityStatus(Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutEntityStatus(Entity entity, byte status) {
+        this.entityID = entity.getEntityId();
+        this.entity = entity;
+        this.status = status;
+    }
+
+    public WrappedPacketOutEntityStatus(int entityID, byte status) {
+        this.entityID = entityID;
+        this.status = status;
+    }
+
+    public int getEntityId() {
+        if (packet == null) {
+            if (entityID != -1) {
+                return entityID;
+            }
+            return entityID = readInt(0);
+        } else {
+            return entityID;
+        }
+    }
+
+    public Entity getEntity() {
+        if (entity == null) {
+            return entity = NMSUtils.getEntityById(getEntityId());
+        }
+        return entity;
+    }
+
+    public byte getEntityStatus() {
+        if (packet == null) {
+            return status;
+        } else {
+            return readByte(0);
+        }
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(NMSUtils.getNMSEntity(getEntity()), status);
+        } catch (InstantiationException | InvocationTargetException
+                | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/entityteleport/WrappedPacketOutEntityTeleport.java

@@ -0,0 +1,219 @@
+/*
+ * 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.out.entityteleport;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import org.bukkit.Location;
+import org.bukkit.entity.Entity;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutEntityTeleport extends WrappedPacket implements SendableWrapper {
+    private static boolean legacyVersionMode;
+    private static boolean ultraLegacyVersionMode;
+    private boolean listeningMode = false;
+    private static final float rotationMultiplier = 256.0F / 360.0F;
+    private static Constructor<?> constructor;
+    private Entity entity = null;
+    private int entityID;
+    private double x, y, z;
+    private float yaw, pitch;
+    private boolean onGround;
+
+    public static void load() {
+        Class<?> packetClass = PacketTypeClasses.Server.ENTITY_TELEPORT;
+        try {
+            constructor = packetClass.getConstructor(int.class, int.class, int.class, int.class, byte.class, byte.class, boolean.class, boolean.class);
+            ultraLegacyVersionMode = true;
+            legacyVersionMode = true;
+        } catch (NoSuchMethodException e) {
+            try {
+                constructor = packetClass.getConstructor(int.class, int.class, int.class, int.class, byte.class, byte.class, boolean.class);
+                ultraLegacyVersionMode = false;
+                legacyVersionMode = true;
+            } catch (NoSuchMethodException e2) {
+                try {
+                    constructor = packetClass.getConstructor();
+                    ultraLegacyVersionMode = false;
+                    legacyVersionMode = false;
+                } catch (NoSuchMethodException e3) {
+                    e3.printStackTrace();
+                }
+            }
+
+        }
+    }
+
+    public WrappedPacketOutEntityTeleport(Object packet) {
+        super(packet);
+        listeningMode = true;
+    }
+
+    public WrappedPacketOutEntityTeleport(int entityID, Location loc, boolean onGround) {
+        this(entityID, loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch(), onGround);
+    }
+
+    public WrappedPacketOutEntityTeleport(int entityID, double x, double y, double z, float yaw, float pitch, boolean onGround) {
+        this.entityID = entityID;
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.yaw = yaw;
+        this.pitch = pitch;
+        this.onGround = onGround;
+    }
+
+    public Entity getEntity() {
+        if(entity == null) {
+            entity = NMSUtils.getEntityById(getEntityId());
+        }
+        return entity;
+    }
+
+    public int getEntityId() {
+        if (listeningMode) {
+            if (entityID != -1) {
+                return readInt(0);
+            } else {
+                return entityID = readInt(0);
+            }
+        } else {
+            return entityID;
+        }
+    }
+
+    public double getX() {
+        if (!listeningMode) {
+            return x;
+        } else {
+            if (legacyVersionMode) {
+                return readInt(1) / 32.0D;
+            } else {
+                return readDouble(0);
+            }
+        }
+    }
+
+    public double getY() {
+        if (!listeningMode) {
+            return y;
+        } else {
+            if (legacyVersionMode) {
+                return readInt(2) / 32.0D;
+            } else {
+                return readDouble(1);
+            }
+        }
+    }
+
+    public double getZ() {
+        if (!listeningMode) {
+            return z;
+        } else {
+            if (legacyVersionMode) {
+                return readInt(3) / 32.0D;
+            } else {
+                return readDouble(2);
+            }
+        }
+    }
+
+    public float getYaw() {
+        if (!listeningMode) {
+            return yaw;
+        } else {
+            return (readByte(0) / rotationMultiplier);
+        }
+    }
+
+    public boolean isOnGround() {
+        if (listeningMode) {
+            return readBoolean(0);
+        } else {
+            return onGround;
+        }
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        if (ultraLegacyVersionMode) {
+            //1.7.10
+            try {
+                return constructor.newInstance(entityID, floor(x * 32.0D), floor(y * 32.0D), floor(z * 32.0D),
+                        (byte) ((int) yaw * rotationMultiplier), (byte) (int) (pitch * rotationMultiplier), false, false);
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        } else if (legacyVersionMode) {
+            //1.8.x
+            try {
+                return constructor.newInstance(entityID, floor(x * 32.0D), floor(y * 32.0D), floor(z * 32.0D),
+                        (byte) ((int) yaw * rotationMultiplier), (byte) (int) (pitch * rotationMultiplier), false);
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        } else {
+            //newer versions
+            Object instance = null;
+            try {
+                instance = constructor.newInstance();
+            } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+
+            WrappedPacket instanceWrapper = new WrappedPacket(instance);
+            instanceWrapper.writeInt(0, entityID);
+            instanceWrapper.writeDouble(0, x);
+            instanceWrapper.writeDouble(1, y);
+            instanceWrapper.writeDouble(2, z);
+
+            instanceWrapper.writeByte(0, (byte) (yaw * rotationMultiplier));
+            instanceWrapper.writeByte(1, (byte) (pitch * rotationMultiplier));
+            if (onGround) {
+                //default value is false, so we can save a reflection call
+                instanceWrapper.writeBoolean(0, true);
+            }
+            return instance;
+        }
+        return null;
+    }
+
+    public float getPitch() {
+        if (listeningMode) {
+            return pitch;
+        } else {
+            return (readByte(1) / rotationMultiplier);
+        }
+    }
+
+    private static int floor(double value) {
+        int i = (int) value;
+        return value < (double) i ? i - 1 : i;
+    }
+}