updated credits to fit latest commit

Completely removed TinyProtocol, please test it, I will be able to fix any bugs tomorrow!

README.md

@@ -2,12 +2,11 @@
 
 A lightweight spigot packetlistener & packetsender coded by retrooper.
 
-## Credit:
+## Credit
 
-PacketEvents uses a modified version of [TinyProtocol](http://github.com/dmulloy2/ProtocolLib/blob/master/TinyProtocol/src/main/java/com/comphenix/tinyprotocol/TinyProtocol.java) by [@DeprecatedLuke](https://github.com/DeprecatedLuke) to support 1.7.10 & 1.8.
-I modified DeprecatedLuke's version of TinyProtocol and added support for 1.9+ versions.
+PacketEvents took TinyProtocol's [Reflection](https://github.com/dmulloy2/ProtocolLib/blob/master/TinyProtocol/src/main/java/com/comphenix/tinyprotocol/Reflection.java) util class.
 
-PacketEvents also took Atlas' Packet class.(all the packet names)
+PacketEvents also took some parts of Atlas' [Packet](https://github.com/funkemunky/Atlas/blob/master/AtlasParent/Atlas/src/main/java/cc/funkemunky/api/tinyprotocol/api/Packet.java) class.
 
 ## About
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>io.github.retrooper</groupId>
     <artifactId>packetevents</artifactId>
-    <version>1.3.2</version>
+    <version>1.3.4.1</version>
     <packaging>jar</packaging>
     <name>packetevents</name>
     <properties>

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

@@ -1,50 +1,38 @@
 package io.github.retrooper.packetevents;
 
+import io.github.retrooper.packetevents.annotations.NotNull;
+import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.annotations.PacketHandler;
 import io.github.retrooper.packetevents.enums.ClientVersion;
 import io.github.retrooper.packetevents.enums.ServerVersion;
-import io.github.retrooper.packetevents.annotations.PacketHandler;
 import io.github.retrooper.packetevents.event.PacketListener;
-import io.github.retrooper.packetevents.event.impl.PacketLoginEvent;
-import io.github.retrooper.packetevents.event.impl.PlayerInjectEvent;
-import io.github.retrooper.packetevents.event.impl.PostPlayerInjectEvent;
-import io.github.retrooper.packetevents.event.impl.ServerTickEvent;
+import io.github.retrooper.packetevents.event.impl.*;
 import io.github.retrooper.packetevents.event.manager.EventManager;
-import io.github.retrooper.packetevents.handler.TinyProtocolHandler;
+import io.github.retrooper.packetevents.handler.NettyPacketHandler;
 import io.github.retrooper.packetevents.packet.Packet;
 import io.github.retrooper.packetevents.packetwrappers.Sendable;
-import io.github.retrooper.packetevents.packetwrappers.login.WrappedPacketLoginHandshake;
 import io.github.retrooper.packetevents.utils.NMSUtils;
 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.plugin.Plugin;
 import org.bukkit.scheduler.BukkitTask;
 
-import io.github.retrooper.packetevents.annotations.Nullable;
 import java.lang.reflect.InvocationTargetException;
 import java.util.HashMap;
 
-public final class PacketEvents implements PacketListener{
-
-
-    /*
-     * Login wrappers TODO
-     * PacketLoginInStart
-     * PacketLoginInEncryptionBegin
-     */
-
-    private static boolean hasRegistered;
+public final class PacketEvents implements PacketListener, Listener {
 
     private static final ServerVersion version = ServerVersion.getVersion();
-    private static PacketEvents instance;
     private static final EventManager eventManager = new EventManager();
-
+    private static boolean hasRegistered;
+    private static PacketEvents instance;
     private static int currentTick;
-
     private static BukkitTask serverTickTask;
-
-    private static final HashMap<Object, ClientVersion> clientVersionLookup = new HashMap<Object, ClientVersion>();
+    private static boolean kickOnRestart;
 
     public static EventManager getEventManager() {
         return eventManager;
@@ -61,14 +49,13 @@ public final class PacketEvents implements PacketListener{
             //Register Bukkit and PacketListener
             getEventManager().registerListener(getInstance());
 
-            //Initialize the TinyProtocolHandler
-            TinyProtocolHandler.initTinyProtocol(plugin);
+            Bukkit.getPluginManager().registerEvents(getInstance(), plugin);
 
             //Start the server tick task
             final Runnable tickRunnable = new Runnable() {
                 @Override
                 public void run() {
-                    getEventManager().callEvent(new ServerTickEvent(currentTick++, PacketEvents.currentCalculatedMS()));
+                    getEventManager().callEvent(new ServerTickEvent(currentTick++, highlyPreciseMillis()));
                 }
             };
             serverTickTask = Bukkit.getScheduler().runTaskTimerAsynchronously(plugin, tickRunnable, 0L, 1L);
@@ -77,13 +64,20 @@ public final class PacketEvents implements PacketListener{
     }
 
     /**
-     * Stop all tasks and unregisters all packetevent listeners
+     * Stop all tasks and unregisters all PacketEvents' listeners
      */
     public static void stop() {
         if (serverTickTask != null) {
             serverTickTask.cancel();
         }
         getEventManager().unregisterAllListeners();
+        if (shouldKickOnStop()) {
+            for (final Player p : Bukkit.getOnlinePlayers()) {
+                if (p != null) {
+                    p.kickPlayer("Please wait till the server finishes reloading/restarting.");
+                }
+            }
+        }
     }
 
     /**
@@ -120,7 +114,7 @@ public final class PacketEvents implements PacketListener{
     /**
      * Get the server's recent TPS values
      * TPS stands for ticks per second.
-     * Learn more about ticks <a href="https://apexminecrafthosting.com/what-is-minecraft-tps/">"https://apexminecrafthosting.com/what-is-minecraft-tps/"</a>
+     * See to learn more about TPS<a href="https://apexminecrafthosting.com/what-is-minecraft-tps/">"https://apexminecrafthosting.com/what-is-minecraft-tps/"</a>
      *
      * @return recentTPS[]
      */
@@ -137,9 +131,9 @@ public final class PacketEvents implements PacketListener{
     /**
      * Get the server's current TPS
      * TPS stands for ticks per second.
-     * Learn more about ticks <a href="https://apexminecrafthosting.com/what-is-minecraft-tps/">"https://apexminecrafthosting.com/what-is-minecraft-tps/"</a>
+     * See to learn more about TPS <a href="https://apexminecrafthosting.com/what-is-minecraft-tps/">"https://apexminecrafthosting.com/what-is-minecraft-tps/"</a>
      *
-     * @return currentTPS / recentTPS[0]
+     * @return {@link PacketEvents#getRecentServerTPS()[0]}
      */
     public static double getCurrentServerTPS() {
         return getRecentServerTPS()[0];
@@ -152,57 +146,91 @@ public final class PacketEvents implements PacketListener{
      * @param player
      * @return ping
      */
-    public static int getPing(final Player player) {
+    public static int getPing(@NotNull final Player player) {
         return NMSUtils.getPlayerPing(player);
     }
 
     /**
-     * Should I use this over System.currentTimeMillis()?
-     * <p>
-     * 1. System.currentTimeMillis() isn't supported on all machines
-     * 2. This is way more accurate than System.currentTimeMillis()
-     * 3. System.currentTimeMillis() can be up to 50ms off, depending on the operating system.
+     * When to use this(nano / 1 million) over {@link System#currentTimeMillis()}
+     * This is preciser than System.currentTimeMillis(), System.currentTimeMillis() can be up to 50ms off on some operating systems, but using this isn't cheap.
+     * Java documentation recommend using nano time if you are measuring elapsed time.
+     * In this function nanoTime is divided by 1 million giving us milliseconds.
+     * It is also important to mention that using this method doesn't guarantee thread safety.
      *
      * @return nanoTime / 1 million
      */
+    public static long highlyPreciseMillis() {
+        return System.nanoTime() / 1000000;
+    }
+
+    /**
+     * This is deprecated, use {@link #highlyPreciseMillis()} as they do the same thing, this is basically just a method rename.
+     */
+    @Deprecated
     public static long currentCalculatedMS() {
         return System.nanoTime() / 1000000;
     }
 
+
     /**
      * Get the player's version.
      * Do not call this method in the PlayerInjectEvent, it is safe to call it in the PostPlayerInjectEvent.
      * The EntityPlayer object is null at that time, resulting in the version lookup to fail.
      *
-     * @param player
+     * / / @param player
      * @return ClientVersion
-     */
+
     @Nullable
-    public static ClientVersion getClientVersion(final Player player) {
+    public static ClientVersion getClientVersion(@NotNull final Player player) {
         final Object channel = TinyProtocolHandler.getPlayerChannel(player);
         return clientVersionLookup.get(channel);
     }
+*/
 
-    /**
-     * Get the players' client version
-     * Do not call this method in the PlayerInjectEvent, it is safe to call it in the PostPlayerInjectEvent.
-     * The EntityPlayer object is null at that time, resulting in the version lookup to fail.
-     *
-     * @param channel
-     * @return ClientVersion
-     */
-    @Nullable
-    public static ClientVersion getClientVersion(final Object channel) {
-        return clientVersionLookup.get(channel);
+    public static boolean shouldKickOnStop() {
+        return kickOnRestart;
     }
 
-    @PacketHandler
-    public void onLogin(final PacketLoginEvent e) {
-        if (e.getPacketName().equals(Packet.Login.HANDSHAKE)) {
-            final WrappedPacketLoginHandshake handshake = new WrappedPacketLoginHandshake(e.getPacket());
-            final ClientVersion clientVersion = ClientVersion.fromProtocolVersion(handshake.getProtocolVersion());
-            clientVersionLookup.put(e.getNettyChannel(), clientVersion);
-        }
+    public static void setShouldKickOnRestart(final boolean val) {
+        kickOnRestart = val;
+    }
+
+    /**
+     * Version independent player injection
+     *
+     * @param player
+     */
+    public static void injectPlayer(final Player player) {
+        NettyPacketHandler.injectPlayer(player);
+    }
+
+    /**
+     * Version independant player injection
+     *
+     * @param player
+     */
+    public static void uninjectPlayer(final Player player) {
+        NettyPacketHandler.uninjectPlayer(player);
+    }
+
+    /**
+     * Returns whether we have injected the player
+     *
+     * @param player
+     * @return hasInjected
+     */
+    public static boolean hasInjected(final Player player) {
+        return NettyPacketHandler.hasInjected(player);
+    }
+
+    /**
+     * Send a wrapped sendable packet to a player
+     *
+     * @param player
+     * @param sendable
+     */
+    public static void sendPacket(final Player player, final Sendable sendable) {
+        NMSUtils.sendSendableWrapper(player, sendable);
     }
 
     /**
@@ -219,53 +247,30 @@ public final class PacketEvents implements PacketListener{
 
     /**
      * Called after the PlayerJoinEvent ONLY if the player has been injected!
+     *
      * @param e
      */
     @PacketHandler
     public void onPostInject(final PostPlayerInjectEvent e) {
-        //It is safe to get his client version in here.
-        final ClientVersion clientVersion = PacketEvents.getClientVersion(e.getPlayer());
+
     }
 
     @EventHandler
-    public void onJoin(PlayerJoinEvent e) {
-        if (hasInjected(e.getPlayer())) {
-            PacketEvents.getEventManager().callEvent(new PostPlayerInjectEvent(e.getPlayer()));
+    public void onJoin(final PlayerJoinEvent e) {
+        if (!hasInjected(e.getPlayer())) {
+
+            PlayerInjectEvent injectEvent = new PlayerInjectEvent(e.getPlayer());
+            PacketEvents.getEventManager().callEvent(injectEvent);
+            if(!injectEvent.isCancelled()) {
+                injectPlayer(e.getPlayer());
+                PacketEvents.getEventManager().callEvent(new PostPlayerInjectEvent(e.getPlayer()));
+            }
+
         }
     }
 
-    /**
-     * Version independant player injection
-     * @param player
-     */
-    public static void injectPlayer(final Player player) {
-        TinyProtocolHandler.inject(player);
-    }
-
-    /**
-     * Version independant player injection
-     * @param player
-     */
-    public static void uninjectPlayer(final Player player) {
-        TinyProtocolHandler.uninject(player);
-    }
-
-    /**
-     * Returns whether we have injected the player
-     * @param player
-     * @return hasInjected
-     */
-    public static boolean hasInjected(final Player player) {
-        return TinyProtocolHandler.hasInjected(player);
-    }
-
-    /**
-     * Send a wrapped sendable packet to a player
-     *
-     * @param player
-     * @param sendable
-     */
-    public static void sendPacket(final Player player, final Sendable sendable) {
-        NMSUtils.sendSendableWrapper(player, sendable);
+    @EventHandler
+    public void onMove(final PlayerMoveEvent e) {
+        PacketEvents.getEventManager().callEvent(new BukkitMoveEvent(e));
     }
 }

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

@@ -1,9 +1,12 @@
 package io.github.retrooper.packetevents.annotations;
 
 
-import java.lang.annotation.*;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
- *  Is for sure not null.
+ * Is for sure not null.
  */
 @Documented
 @Retention(RetentionPolicy.RUNTIME)

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

@@ -6,7 +6,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
 /**
- *  Could be null.
+ * Could be null.
  */
 @Documented
 @Retention(RetentionPolicy.RUNTIME)

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

@@ -59,7 +59,7 @@ public enum ClientVersion {
             default:
                 remainder = protocolVersion;
         }
-        if(remainder > 578) {
+        if (remainder > 578) {
             return HIGHER_THAN_V_1_15_2;
         }
         return INVALID;
@@ -78,18 +78,18 @@ public enum ClientVersion {
 
     /**
      * 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;
+        if (version == this) return false;
         byte len = (byte) values().length;
         for (byte i = 0; i < len; i++) {
             final ClientVersion v = values()[i];
-            if(v == this) {
+            if (v == this) {
                 return true;
-            }
-            else if(v == version) {
+            } else if (v == version) {
                 return false;
             }
         }

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

@@ -1,9 +1,7 @@
 package io.github.retrooper.packetevents.enums;
 
 public enum Direction {
-    DOWN, UP, NORTH, SOUTH, WEST, EAST
-
-    ,NORTH_EAST,
+    DOWN, UP, NORTH, SOUTH, WEST, EAST, NORTH_EAST,
     NORTH_WEST, SOUTH_EAST,
     SOUTH_WEST, WEST_NORTH_WEST,
     NORTH_NORTH_WEST, NORTH_NORTH_EAST,

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

@@ -8,9 +8,9 @@ public enum EntityAnimationType {
     }
 
     public final int getIndex() {
-        for(int i = 0; i < values().length; i++) {
+        for (int i = 0; i < values().length; i++) {
             final EntityAnimationType curType = values()[0];
-            if(curType == this) {
+            if (curType == this) {
                 return i;
             }
         }

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

@@ -2,5 +2,5 @@ package io.github.retrooper.packetevents.enums;
 
 public enum Hand {
     MAIN_HAND,
-    OFF_HAND;
+    OFF_HAND
 }

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

@@ -9,6 +9,8 @@ public enum ServerVersion {
     ERROR;
 
 
+    private static final String nmsVersionSuffix = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
+
     public static ServerVersion getVersion() {
         ServerVersion[] vals = values();
         ArrayUtils.reverse(vals);
@@ -21,8 +23,6 @@ public enum ServerVersion {
         return ERROR;
     }
 
-    private static final String nmsVersionSuffix = Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
-
     public static String getNmsSuffix() {
         return nmsVersionSuffix;
     }
@@ -53,14 +53,13 @@ public enum ServerVersion {
      * @return
      */
     public boolean isLowerThan(final ServerVersion version) {
-        if(version == this) return false;
+        if (version == this) return false;
         byte len = (byte) values().length;
         for (byte i = 0; i < len; i++) {
             final ServerVersion v = values()[i];
-            if(v == this) {
+            if (v == this) {
                 return true;
-            }
-            else if(v == version) {
+            } else if (v == version) {
                 return false;
             }
         }

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

@@ -9,11 +9,12 @@ import io.github.retrooper.packetevents.enums.ServerVersion;
  * recommended to avoid non thread safe bukkit operations
  */
 public class PacketEvent {
-    protected long timestamp = PacketEvents.currentCalculatedMS();
     protected static ServerVersion version = PacketEvents.getServerVersion();
+    protected long timestamp = PacketEvents.highlyPreciseMillis();
 
     /**
      * Timestamp of the packet
+     *
      * @return
      */
     public long getTimestamp() {

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

@@ -1,4 +1,4 @@
 package io.github.retrooper.packetevents.event;
 
-public interface PacketListener  {
+public interface PacketListener {
 }

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

@@ -0,0 +1,35 @@
+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

@@ -1,26 +0,0 @@
-package io.github.retrooper.packetevents.event.impl;
-
-import io.github.retrooper.packetevents.event.PacketEvent;
-
-public final class PacketLoginEvent extends PacketEvent {
-    private final Object channel;
-    private final String name;
-    private final Object packet;
-    public PacketLoginEvent(final Object channel, final String packetName, final Object packet) {
-        this.channel =channel;
-        this.name = packetName;
-        this.packet = packet;
-    }
-
-    public Object getNettyChannel() {
-        return channel;
-    }
-
-    public String getPacketName() {
-        return name;
-    }
-
-    public Object getPacket() {
-        return packet;
-    }
-}

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

@@ -42,15 +42,6 @@ public final class PacketReceiveEvent extends PacketEvent {
         return this.packet;
     }
 
-    /**
-     * Cancel the packet
-     *
-     * @param cancelled
-     */
-    public void setCancelled(boolean cancelled) {
-        this.cancelled = cancelled;
-    }
-
     /**
      * Returns if the packet has been cancelled
      *
@@ -59,4 +50,13 @@ public final class PacketReceiveEvent extends PacketEvent {
     public boolean isCancelled() {
         return cancelled;
     }
+
+    /**
+     * Cancel the packet
+     *
+     * @param cancelled
+     */
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
 }

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

@@ -35,13 +35,12 @@ public final class PacketSendEvent extends PacketEvent {
         return this.packet;
     }
 
+    public boolean isCancelled() {
+        return cancelled;
+    }
 
     public void setCancelled(boolean cancelled) {
         this.cancelled = cancelled;
     }
-
-    public boolean isCancelled() {
-        return cancelled;
-    }
 }
 

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

@@ -6,6 +6,7 @@ import org.bukkit.entity.Player;
 public final class PlayerInjectEvent extends PacketEvent {
     private final Player player;
     private boolean cancelled;
+
     public PlayerInjectEvent(final Player player) {
         this.player = player;
     }

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

@@ -7,7 +7,7 @@ public final class PlayerUninjectEvent extends PacketEvent {
     private final Player player;
 
     public PlayerUninjectEvent(final Player player) {
-        this.player =player;
+        this.player = player;
     }
 
     public Player getPlayer() {

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

@@ -3,6 +3,10 @@ package io.github.retrooper.packetevents.event.impl;
 import io.github.retrooper.packetevents.event.PacketEvent;
 import org.bukkit.entity.Player;
 
+/**
+ * It is now safe to use PlayerInjectEvent
+ */
+@Deprecated
 public final class PostPlayerInjectEvent extends PacketEvent {
     private final Player player;
 

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

@@ -6,6 +6,7 @@ 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;
         this.timestamp = timestamp;

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

@@ -1,7 +1,7 @@
 package io.github.retrooper.packetevents.event.manager;
 
-import io.github.retrooper.packetevents.event.PacketEvent;
 import io.github.retrooper.packetevents.annotations.PacketHandler;
+import io.github.retrooper.packetevents.event.PacketEvent;
 import io.github.retrooper.packetevents.event.PacketListener;
 
 import java.lang.reflect.InvocationTargetException;
@@ -9,18 +9,22 @@ 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;
 
 public final class EventManager {
 
-    private HashMap<PacketListener, List<Method>> registeredMethods = new HashMap<PacketListener, List<Method>>();
+    private static final ExecutorService executorService = Executors.newCachedThreadPool();
+    private final HashMap<PacketListener, List<Method>> registeredMethods = new HashMap<PacketListener, List<Method>>();
 
     public void callEvent(final PacketEvent e) {
         for (final PacketListener listener : registeredMethods.keySet()) {
             //Annotated methods
             final List<Method> methods = registeredMethods.get(listener);
             for (final Method method : methods) {
-                if (method.getParameterTypes()[0].equals(PacketEvent.class)
-                        || method.getParameterTypes()[0].getSimpleName().equals(e.getClass().getSimpleName())) {
+                final Class<?> parameterType = method.getParameterTypes()[0];
+                if (parameterType.equals(PacketEvent.class)
+                        || parameterType.isInstance(e)) {
                     try {
                         method.invoke(listener, e);
                     } catch (IllegalAccessException | InvocationTargetException ex) {
@@ -31,15 +35,20 @@ public final class EventManager {
         }
     }
 
-
     public void registerListener(final PacketListener e) {
+        if (registeredMethods.containsKey(e)) {
+            return;
+        }
         final List<Method> methods = new ArrayList<Method>();
         for (final Method m : e.getClass().getMethods()) {
-            if (m.isAnnotationPresent(PacketHandler.class)) {
+            if (m.isAnnotationPresent(PacketHandler.class)
+                    && m.getParameterTypes().length == 1) {
                 methods.add(m);
             }
         }
-        registeredMethods.put(e, methods);
+        if (!methods.isEmpty()) {
+            registeredMethods.put(e, methods);
+        }
     }
 
     public void unregisterListener(final PacketListener e) {
@@ -50,7 +59,7 @@ public final class EventManager {
         registeredMethods.clear();
     }
 
-    public boolean hasRegistered(final PacketListener listener) {
+    public boolean isRegistered(final PacketListener listener) {
         return registeredMethods.containsKey(listener);
     }
 }

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

@@ -0,0 +1,24 @@
+package io.github.retrooper.packetevents.example;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import org.bukkit.plugin.java.JavaPlugin;
+
+public class MainExample extends JavaPlugin {
+
+    @Override
+    public void onEnable() {
+        PacketEvents.start(this);
+
+        PacketEvents.getServerTickTask().cancel();
+
+        //To fix bugs it is recommend to set this to TRUE
+        PacketEvents.setShouldKickOnRestart(true);
+    }
+
+    @Override
+    public void onDisable() {
+        PacketEvents.stop(); //it kicks when you call the stop() function
+    }
+
+
+}

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

@@ -0,0 +1,67 @@
+package io.github.retrooper.packetevents.handler;
+
+import io.github.retrooper.packetevents.PacketEvents;
+import io.github.retrooper.packetevents.enums.ServerVersion;
+import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
+import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
+import org.bukkit.entity.Player;
+
+import java.util.HashSet;
+import java.util.UUID;
+import java.util.concurrent.Future;
+
+public class NettyPacketHandler {
+    public static final String handlerName = "PacketEventsListener";
+    private static final ServerVersion version = PacketEvents.getServerVersion();
+
+    public static final HashSet<UUID> injectedList = new HashSet<UUID>();
+
+    public static void injectPlayer(final Player player) {
+        if (!hasInjected(player)) {
+            if (version.isLowerThan(ServerVersion.v_1_8)) {
+                NettyPacketHandler_7.injectPlayer(player);
+            } else {
+                NettyPacketHandler_8.injectPlayer(player);
+            }
+            injectedList.add(player.getUniqueId());
+        }
+    }
+
+    public static Future<?> uninjectPlayer(final Player player) {
+        if (hasInjected(player)) {
+            injectedList.remove(player.getUniqueId());
+            if (version.isLowerThan(ServerVersion.v_1_8)) {
+                return NettyPacketHandler_7.uninjectPlayer(player);
+            } else {
+                return NettyPacketHandler_8.uninjectPlayer(player);
+            }
+        }
+        return null;
+    }
+
+    public static boolean hasInjected(final Player player) {
+        return injectedList.contains(player.getUniqueId());
+    }
+
+    public static Object read(final Player receiver, final Object packet) {
+        final String packetName = packet.getClass().getSimpleName();
+        final PacketSendEvent packetSendEvent = new PacketSendEvent(receiver, packetName, packet);
+        PacketEvents.getEventManager().callEvent(packetSendEvent);
+        if (!packetSendEvent.isCancelled()) {
+            return packet;
+        }
+        return null;
+    }
+
+    public static Object write(final Player sender, final Object packet) {
+        final String packetName = packet.getClass().getSimpleName();
+        final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(sender, packetName, packet);
+        PacketEvents.getEventManager().callEvent(packetReceiveEvent);
+        if (!packetReceiveEvent.isCancelled()) {
+            return packet;
+        }
+        return null;
+    }
+
+
+}

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

@@ -0,0 +1,44 @@
+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

@@ -0,0 +1,43 @@
+package io.github.retrooper.packetevents.handler;
+
+import io.github.retrooper.packetevents.utils.NMSUtils;
+import io.netty.channel.*;
+import org.bukkit.entity.Player;
+
+import java.util.concurrent.Future;
+
+final class NettyPacketHandler_8 {
+    public static void injectPlayer(final Player player) {
+        final ChannelDuplexHandler channelDuplexHandler = new ChannelDuplexHandler() {
+            @Override
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                Object packet = NettyPacketHandler.read(player, msg);
+                if(packet == null) {
+                    return;
+                }
+                super.channelRead(ctx, msg);
+            }
+
+            @Override
+            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                Object packet = NettyPacketHandler.write(player, msg);
+                if(packet == null) {
+                    return;
+                }
+                super.write(ctx, msg, promise);
+            }
+        };
+        final ChannelPipeline pipeline = ((Channel) NMSUtils.getChannel(player)).pipeline();
+        pipeline.addBefore(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/TinyProtocolHandler.java

@@ -1,92 +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.tinyprotocol.Reflection;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection.FieldAccessor;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
-
-public final class TinyProtocolHandler {
-    private static final ServerVersion version = PacketEvents.getServerVersion();
-
-    private static Object tinyProtocol;
-
-    public static void initTinyProtocol(final Plugin plugin) {
-        if (version.isLowerThan(ServerVersion.v_1_8)) {
-            TinyProtocolHandler_1_7 tiny = new TinyProtocolHandler_1_7(plugin);
-            tiny.initTinyProtocol();
-            tinyProtocol = tiny;
-        } else {
-            TinyProtocolHandler_1_8 tiny = new TinyProtocolHandler_1_8(plugin);
-            tiny.initTinyProtocol();
-            tinyProtocol = tiny;
-        }
-    }
-
-    public static boolean hasInjected(final Player player) {
-        if (version.isLowerThan(ServerVersion.v_1_8)) {
-            TinyProtocolHandler_1_7 tiny = (TinyProtocolHandler_1_7) tinyProtocol;
-            assert tiny.tinyProtocol != null;
-            return tiny.tinyProtocol.hasInjected(player);
-        } else {
-            TinyProtocolHandler_1_8 tiny = (TinyProtocolHandler_1_8) tinyProtocol;
-            assert tiny.tinyProtocol != null;
-            return tiny.tinyProtocol.hasInjected(player);
-        }
-    }
-
-    public static void inject(final Player player) {
-        if (version.isLowerThan(ServerVersion.v_1_8)) {
-            TinyProtocolHandler_1_7 tiny = (TinyProtocolHandler_1_7) tinyProtocol;
-            assert tiny.tinyProtocol != null;
-            tiny.tinyProtocol.injectPlayer(player);
-        } else {
-            TinyProtocolHandler_1_8 tiny = (TinyProtocolHandler_1_8) tinyProtocol;
-            assert tiny.tinyProtocol != null;
-            tiny.tinyProtocol.injectPlayer(player);
-        }
-    }
-
-    public static void uninject(final Player player) {
-        if (version.isLowerThan(ServerVersion.v_1_8)) {
-            TinyProtocolHandler_1_7 tiny = (TinyProtocolHandler_1_7) tinyProtocol;
-            assert tiny.tinyProtocol != null;
-            tiny.tinyProtocol.uninjectPlayer(player);
-        } else {
-            TinyProtocolHandler_1_8 tiny = (TinyProtocolHandler_1_8) tinyProtocol;
-            assert tiny.tinyProtocol != null;
-            tiny.tinyProtocol.uninjectPlayer(player);
-        }
-    }
-
-
-    public static Object getPlayerChannel(final Player player) {
-        final Object entityPlayer = NMSUtils.getEntityPlayer(player);
-        final Object playerConnection = playerConnectionAccessor.get(entityPlayer);
-        final Object networkManager = networkManagerAccessor.get(playerConnection);
-        return nettyChannelAccessor.get(networkManager);
-    }
-
-
-    private static Class<?> networkManagerClass;
-
-    private static final FieldAccessor<?> playerConnectionAccessor, networkManagerAccessor, nettyChannelAccessor;
-
-    private static Class<?> channelClass;
-
-    static {
-        try {
-            networkManagerClass = NMSUtils.getNMSClass("NetworkManager");
-            channelClass = NMSUtils.getNettyClass("channel.Channel");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        playerConnectionAccessor = Reflection.getField(NMSUtils.entityPlayerClass, NMSUtils.playerConnectionClass, 0);
-        networkManagerAccessor = Reflection.getField(NMSUtils.playerConnectionClass, networkManagerClass, 0);
-        nettyChannelAccessor = Reflection.getField(networkManagerClass, channelClass, 0);
-    }
-}

src/main/java/io/github/retrooper/packetevents/handler/TinyProtocolHandler_1_7.java

@@ -1,60 +0,0 @@
-package io.github.retrooper.packetevents.handler;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.impl.PacketLoginEvent;
-import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
-import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
-import io.github.retrooper.packetevents.packet.Packet;
-import io.github.retrooper.packetevents.tinyprotocol.TinyProtocol7;
-import net.minecraft.util.io.netty.channel.Channel;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
-
-import io.github.retrooper.packetevents.annotations.Nullable;
-
-public final class TinyProtocolHandler_1_7 {
-    private final Plugin plugin;
-
-    public TinyProtocolHandler_1_7(final Plugin plugin) {
-        this.plugin = plugin;
-    }
-
-    @Nullable
-    public TinyProtocol7 tinyProtocol;
-
-    public void initTinyProtocol() {
-        tinyProtocol = new TinyProtocol7(getPlugin()) {
-            @Override
-            public Object onPacketOutAsync(Player receiver, Channel channel, Object packet) {
-                final String packetName = packet.getClass().getSimpleName();
-                final PacketSendEvent packetSendEvent = new PacketSendEvent(receiver, packetName, packet);
-                PacketEvents.getEventManager().callEvent(packetSendEvent);
-                if (!packetSendEvent.isCancelled()) {
-                    return packet;
-                }
-                return null;
-            }
-
-            @Override
-            public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
-                final String packetName = packet.getClass().getSimpleName();
-                for(final String loginPacket : Packet.Login.LOGIN_PACKETS) {
-                    if(packetName.equals(loginPacket)) {
-                        PacketEvents.getEventManager().callEvent(new PacketLoginEvent(channel, packetName, packet));
-                        return packet;
-                    }
-                }
-                final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(sender, packetName, packet);
-                PacketEvents.getEventManager().callEvent(packetReceiveEvent);
-                if (!packetReceiveEvent.isCancelled()) {
-                    return packet;
-                }
-                return null;
-            }
-        };
-    }
-
-    public Plugin getPlugin() {
-        return plugin;
-    }
-}

src/main/java/io/github/retrooper/packetevents/handler/TinyProtocolHandler_1_8.java

@@ -1,85 +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.event.impl.PacketLoginEvent;
-import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
-import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
-import io.github.retrooper.packetevents.packet.Packet;
-import io.github.retrooper.packetevents.tinyprotocol.TinyProtocol8;
-import io.netty.channel.Channel;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
-
-import io.github.retrooper.packetevents.annotations.Nullable;
-
-public final class TinyProtocolHandler_1_8 {
-    private static final ServerVersion version = PacketEvents.getServerVersion();
-    private final Plugin plugin;
-
-    public TinyProtocolHandler_1_8(final Plugin plugin) {
-        this.plugin = plugin;
-    }
-
-
-
-    @Nullable
-    public TinyProtocol8 tinyProtocol;
-
-
-    public void initTinyProtocol() {
-        tinyProtocol = new TinyProtocol8(getPlugin()) {
-            @Override
-            public Object onPacketOutAsync(Player receiver, Channel channel, Object packet) {
-                final String packetName = packet.getClass().getSimpleName();
-                final PacketSendEvent packetSendEvent = new PacketSendEvent(receiver, packetName, packet);
-                PacketEvents.getEventManager().callEvent(packetSendEvent);
-                if (!packetSendEvent.isCancelled()) {
-                    return packet;
-                }
-                return null;
-            }
-
-            @Override
-            public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
-                final String packetName = packet.getClass().getSimpleName();
-                for (final String loginPacket : Packet.Login.LOGIN_PACKETS) {
-                    if (packetName.equals(loginPacket)) {
-                        PacketEvents.getEventManager().callEvent(new PacketLoginEvent(channel, packetName, packet));
-                        return packet;
-                    }
-                }
-                final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(sender, packetName, packet);
-                PacketEvents.getEventManager().callEvent(packetReceiveEvent);
-                if (!packetReceiveEvent.isCancelled()) {
-                    return packet;
-                }
-
-                return null;
-            }
-        };
-    }
-
-    public static String getNetworkManagersFieldName() {
-        //1.8
-        if (version.equals(ServerVersion.v_1_8)) {
-            return "g";
-        }
-        //1.8.3->1.12
-        else if (version.isLowerThan(ServerVersion.v_1_13)) {
-            return "h";
-        }
-        //1.13->1.14
-        else if (version.isLowerThan(ServerVersion.v_1_15)) {
-            return "g";
-        }
-        //1.15
-        else {
-            return "listeningChannels";
-        }
-    }
-
-    public Plugin getPlugin() {
-        return plugin;
-    }
-}

src/main/java/io/github/retrooper/packetevents/mojang/GameProfile.java

@@ -0,0 +1,82 @@
+package io.github.retrooper.packetevents.mojang;
+
+import com.mojang.authlib.properties.PropertyMap;
+import org.bukkit.craftbukkit.libs.org.apache.commons.lang3.StringUtils;
+import org.bukkit.craftbukkit.libs.org.apache.commons.lang3.builder.ToStringBuilder;
+
+import java.util.UUID;
+
+public class GameProfile {
+    private final UUID id;
+    private final String name;
+    private final PropertyMap properties = new PropertyMap();
+    private boolean legacy;
+
+    public GameProfile(UUID id, String name) {
+        if (id == null && StringUtils.isBlank(name)) {
+            throw new IllegalArgumentException("Name and ID cannot both be blank");
+        } else {
+            this.id = id;
+            this.name = name;
+        }
+    }
+
+    public UUID getId() {
+        return this.id;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public PropertyMap getProperties() {
+        return this.properties;
+    }
+
+    public boolean isComplete() {
+        return this.id != null && StringUtils.isNotBlank(this.getName());
+    }
+
+    public boolean equalsMojangGameProfile(com.mojang.authlib.GameProfile profile) {
+        if (profile != null) {
+            return profile.getId() != null && getId() != null && profile.getId() == getId()
+                    && profile.getName() != null && getName() != null && profile.getName().equals(getName());
+        }
+        return false;
+    }
+
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        } else if (o != null && this.getClass() == o.getClass()) {
+            GameProfile that = (GameProfile) o;
+            if (this.id != null) {
+                if (!this.id.equals(that.id)) {
+                    return false;
+                }
+            } else if (that.id != null) {
+                return false;
+            }
+
+            if (this.name != null) {
+                return this.name.equals(that.name);
+            } else return that.name == null;
+        } else {
+            return false;
+        }
+    }
+
+    public int hashCode() {
+        int result = this.id != null ? this.id.hashCode() : 0;
+        result = 31 * result + (this.name != null ? this.name.hashCode() : 0);
+        return result;
+    }
+
+    public String toString() {
+        return (new ToStringBuilder(this)).append("id", this.id).append("name", this.name).append("properties", this.properties).append("legacy", this.legacy).toString();
+    }
+
+    public boolean isLegacy() {
+        return this.legacy;
+    }
+}

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

@@ -5,6 +5,58 @@ import io.github.retrooper.packetevents.utils.NMSUtils;
 
 public abstract class Packet {
 
+    private static Class<?> packetPlayInFlying, packetPlayInPosition, packetPlayInPositionLook, packetPlayInLook;
+
+    static {
+        try {
+            packetPlayInFlying = NMSUtils.getNMSClass(Client.FLYING);
+        } catch (ClassNotFoundException e) {
+            //That is fine, they are on 1.9+ so we just initiate the rest of the variables
+            try {
+                packetPlayInPosition = NMSUtils.getNMSClass(Client.POSITION);
+                packetPlayInPositionLook = NMSUtils.getNMSClass(Client.POSITION_LOOK);
+                packetPlayInLook = NMSUtils.getNMSClass(Client.LOOK);
+            } catch (ClassNotFoundException e2) {
+                e2.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * Is this NMS packet an instanceof the "PacketPlayInFlying" packet in the 1.8 protocol?
+     * Supports 1.9->1.15.2 too!
+     *
+     * @param nmsPacket
+     * @return If the nms packet provided is an instanceof the "PacketPlayInFlying" packet in the 1.8 protocol!
+     */
+    public static boolean isInstanceOfFlyingPacket(Object nmsPacket) {
+        //1.7->1.8.8
+        if (packetPlayInFlying != null) {
+            return packetPlayInFlying.isInstance(nmsPacket);
+        } else {
+            //1.9->1.15.2
+            return packetPlayInPosition.isInstance(nmsPacket)
+                    || packetPlayInPositionLook.isInstance(nmsPacket)
+                    || packetPlayInLook.isInstance(nmsPacket);
+        }
+    }
+
+    /**
+     * Use isInstanceOfFlyingPacket(nmsPacketObject) instead of this, as the flying packet is the only packet that has subclasses (in 1.8 atleast).
+     * Will be removed in newer versions of PacketEvents!
+     *
+     * @param fatherPacket
+     * @param childPacket
+     * @return isInstanceOf
+     */
+    @Deprecated
+    public static boolean isInstanceOf(String fatherPacket, String childPacket) {
+        if (fatherPacket.equals(Client.FLYING) && childPacket.equals(Client.POSITION) || childPacket.equals(Client.POSITION_LOOK) || childPacket.equals(Client.LOOK)) {
+            return true;
+        }
+        return fatherPacket.equals(childPacket);
+    }
+
     public static class Client {
         private static final String c = "PacketPlayIn";
 
@@ -77,58 +129,10 @@ public abstract class Packet {
         public static final String PING = "PacketStatusInPing";
         public static final String START = "PacketStatusInStart";
         public static final String SUCCESS = "PacketLoginOutSuccess";
+        public static final String ENCRYPTION_BEGIN_IN = "PacketLoginInEncryptionBegin";
+        public static final String ENCRYPTION_BEGIN_OUT = "PacketLoginOutEncryptionBegin";
 
         public static final String[] LOGIN_PACKETS = new String[]{"PacketHandshakingInSetProtocol", "PacketLoginInStart", "PacketLoginInEncryptionBegin"};
     }
 
-    /**
-     * Is this NMS packet an instanceof the "PacketPlayInFlying" packet in the 1.8 protocol?
-     * Supports 1.9->1.15.2 too!
-     * @param nmsPacket
-     * @return If the nms packet provided is an instanceof the "PacketPlayInFlying" packet in the 1.8 protocol!
-     */
-    public static boolean isInstanceOfFlyingPacket(Object nmsPacket) {
-        //1.7->1.8.8
-        if (packetPlayInFlying != null) {
-            return packetPlayInFlying.isInstance(nmsPacket);
-        } else {
-            //1.9->1.15.2
-            return packetPlayInPosition.isInstance(nmsPacket)
-                    || packetPlayInPositionLook.isInstance(nmsPacket)
-                    || packetPlayInLook.isInstance(nmsPacket);
-        }
-    }
-
-    /**
-     * Use isInstanceOfFlyingPacket(nmsPacketObject) instead of this, as the flying packet is the only packet that has subclasses (in 1.8 atleast).
-     * Will be removed in newer versions of PacketEvents!
-     * @param fatherPacket
-     * @param childPacket
-     * @return isInstanceOf
-     */
-    @Deprecated
-    public static boolean isInstanceOf(String fatherPacket, String childPacket) {
-        if (fatherPacket.equals(Client.FLYING) && childPacket.equals(Client.POSITION) || childPacket.equals(Client.POSITION_LOOK) || childPacket.equals(Client.LOOK)) {
-            return true;
-        }
-        return fatherPacket.equals(childPacket);
-    }
-
-    private static Class<?> packetPlayInFlying, packetPlayInPosition, packetPlayInPositionLook, packetPlayInLook;
-
-    static {
-        try {
-            packetPlayInFlying = NMSUtils.getNMSClass(Client.FLYING);
-        } catch (ClassNotFoundException e) {
-            //That is fine, they are on 1.9+ so we just initiate the rest of the variables
-            try {
-                packetPlayInPosition = NMSUtils.getNMSClass(Client.POSITION);
-                packetPlayInPositionLook = NMSUtils.getNMSClass(Client.POSITION_LOOK);
-                packetPlayInLook = NMSUtils.getNMSClass(Client.LOOK);
-            } catch (ClassNotFoundException e2) {
-                e2.printStackTrace();
-            }
-        }
-    }
-
 }

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

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

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

@@ -4,13 +4,13 @@ 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;
-    protected static ServerVersion version = ServerVersion.getVersion();
 
     public WrappedPacket(final Object packet) {
         this.player = null;
-        if(packet == null)return;
+        if (packet == null) return;
         this.packet = packet;
         try {
             setup();
@@ -21,7 +21,7 @@ public class WrappedPacket {
 
     public WrappedPacket(final Player player, final Object packet) {
         this.player = player;
-        if(packet == null)return;
+        if (packet == null) return;
         this.packet = packet;
         try {
             setup();
@@ -30,7 +30,7 @@ public class WrappedPacket {
         }
     }
 
-    protected void setup()  {
+    protected void setup() {
 
     }
 

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

@@ -6,6 +6,36 @@ import io.github.retrooper.packetevents.utils.NMSUtils;
 import java.lang.reflect.Field;
 
 public final class WrappedPacketInAbilities extends WrappedPacket {
+    private static Class<?> abilitiesClass;
+    private static final Field[] fields = new Field[6];
+
+    static {
+
+        try {
+            abilitiesClass = NMSUtils.getNMSClass("PacketPlayInAbilities");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+
+        try {
+            fields[0] = abilitiesClass.getDeclaredField("a");
+            fields[1] = abilitiesClass.getDeclaredField("b");
+            fields[2] = abilitiesClass.getDeclaredField("c");
+            fields[3] = abilitiesClass.getDeclaredField("d");
+            fields[4] = abilitiesClass.getDeclaredField("e");
+            fields[5] = abilitiesClass.getDeclaredField("f");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+
+        for (Field f : fields) {
+            if (f != null) {
+                f.setAccessible(true);
+            }
+        }
+    }
+
     private boolean isVulnerable;
     private boolean isFlying;
     private boolean allowFly;
@@ -39,6 +69,15 @@ public final class WrappedPacketInAbilities extends WrappedPacket {
         return isFlying;
     }
 
+    public boolean isFlightAllowed() {
+        return allowFly;
+    }
+
+    /**
+     * Use {@link WrappedPacketInAbilities#isFlightAllowed()}
+     * @return
+     */
+    @Deprecated
     public boolean canFly() {
         return allowFly;
     }
@@ -54,35 +93,4 @@ public final class WrappedPacketInAbilities extends WrappedPacket {
     public float getWalkSpeed() {
         return walkSpeed;
     }
-
-    private static Class<?> abilitiesClass;
-
-    private static Field[] fields = new Field[6];
-
-    static {
-
-        try {
-            abilitiesClass = NMSUtils.getNMSClass("PacketPlayInAbilities");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-
-        try {
-            fields[0] = abilitiesClass.getDeclaredField("a");
-            fields[1] = abilitiesClass.getDeclaredField("b");
-            fields[2] = abilitiesClass.getDeclaredField("c");
-            fields[3] = abilitiesClass.getDeclaredField("d");
-            fields[4] = abilitiesClass.getDeclaredField("e");
-            fields[5] = abilitiesClass.getDeclaredField("f");
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
-        }
-
-        for (Field f : fields) {
-            if (f != null) {
-                f.setAccessible(true);
-            }
-        }
-    }
 }

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

@@ -4,86 +4,21 @@ import io.github.retrooper.packetevents.enums.Direction;
 import io.github.retrooper.packetevents.enums.PlayerDigType;
 import io.github.retrooper.packetevents.enums.ServerVersion;
 import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
 import io.github.retrooper.packetevents.utils.NMSUtils;
 import io.github.retrooper.packetevents.utils.vector.Vector3i;
 
 import java.lang.reflect.Field;
 
 public final class WrappedPacketInBlockDig extends WrappedPacket {
-    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 == ServerVersion.v_1_7_10) {
-                final int x = fields[0].getInt(packet);
-                final int y = fields[1].getInt(packet);
-                final int z = fields[2].getInt(packet);
-
-                this.blockPosition = new Vector3i(x, y, z);
-
-                enumDirection = Direction.get((byte) face.getInt(packet));
-                enumDigType = PlayerDigType.get((byte) e.getInt(packet));
-            } else {
-                //1.8+
-                final Object blockPosObj = fields[0].get(packet);
-                final Object enumDirectionObj = fields[1].get(packet);
-                final Object digTypeObj = fields[2].get(packet);
-
-                final int x = blockPosXYZ[0].get(blockPosObj);
-                final int y = blockPosXYZ[1].get(blockPosObj);
-                final int z = blockPosXYZ[2].get(blockPosObj);
-
-                this.blockPosition = new Vector3i(x, y, z);
-
-                enumDirection = Direction.valueOf(((Enum) enumDirectionObj).name());
-                enumDigType = PlayerDigType.valueOf(((Enum) digTypeObj).name());
-            }
-        }
-        catch(IllegalAccessException e) {
-            e.printStackTrace();
-        }
-        this.direction =  enumDirection;
-        this.digType = enumDigType;
-    }
-
-    public Vector3i getBlockPosition() {
-        return blockPosition;
-    }
-
-    public Direction getDirection() {
-        return direction;
-    }
-
-    public PlayerDigType getDigType() {
-        return digType;
-    }
-
     //ALL
     private static Class<?> blockDigClass;
-
-
     //1.8
-    private static Field[] fields = new Field[3];
-
+    private static final Field[] fields = new Field[3];
     private static Class<?> blockPositionClass;
-
-    private static Reflection.FieldAccessor<Integer>[] blockPosXYZ = new Reflection.FieldAccessor[3];
-
+    private static final Reflection.FieldAccessor<Integer>[] blockPosXYZ = new Reflection.FieldAccessor[3];
     //1.7
     private static Field face;
-
     private static Field e;
 
     static {
@@ -118,20 +53,77 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
             e.printStackTrace();
         }
 
-        for(Field f : fields) {
-            if(f != null) {
+        for (Field f : fields) {
+            if (f != null) {
                 f.setAccessible(true);
             }
         }
 
-        if(e != null) {
+        if (e != null) {
             e.setAccessible(true);
         }
 
-        if(face != null) {
+        if (face != null) {
             face.setAccessible(true);
         }
     }
 
+    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 == ServerVersion.v_1_7_10) {
+                final int x = fields[0].getInt(packet);
+                final int y = fields[1].getInt(packet);
+                final int z = fields[2].getInt(packet);
+
+                this.blockPosition = new Vector3i(x, y, z);
+
+                enumDirection = Direction.get((byte) face.getInt(packet));
+                enumDigType = PlayerDigType.get((byte) e.getInt(packet));
+            } else {
+                //1.8+
+                final Object blockPosObj = fields[0].get(packet);
+                final Object enumDirectionObj = fields[1].get(packet);
+                final Object digTypeObj = fields[2].get(packet);
+
+                final int x = blockPosXYZ[0].get(blockPosObj);
+                final int y = blockPosXYZ[1].get(blockPosObj);
+                final int z = blockPosXYZ[2].get(blockPosObj);
+
+                this.blockPosition = new Vector3i(x, y, z);
+
+                enumDirection = Direction.valueOf(((Enum) enumDirectionObj).name());
+                enumDigType = PlayerDigType.valueOf(((Enum) digTypeObj).name());
+            }
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        this.direction = enumDirection;
+        this.digType = enumDigType;
+    }
+
+    public Vector3i getBlockPosition() {
+        return blockPosition;
+    }
+
+    public Direction getDirection() {
+        return direction;
+    }
+
+    public PlayerDigType getDigType() {
+        return digType;
+    }
+
 
 }

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

@@ -22,22 +22,28 @@ public final class WrappedPacketInBlockPlace extends WrappedPacket {
         Vector3i position = null;
         ItemStack itemStack = null;
         try {
-        if (version.isHigherThan(ServerVersion.v_1_8_8)) {
-            final WrappedPacketInBlockPlace_1_9 updatedBlockPlace = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
-            final Block block = updatedBlockPlace.getBlock();
-            position = new Vector3i(block.getX(), block.getY(), block.getZ());
-            itemStack = new ItemStack(block.getType());
-        } else {
-            final WrappedPacketInBlockPlace_1_8 legacyBlockPlace = new WrappedPacketInBlockPlace_1_8(packet);
-            position = legacyBlockPlace.getBlockPosition();
-            itemStack = legacyBlockPlace.getItemStack();
-        } }
-        catch(IllegalArgumentException e) {
+            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();
         }
         this.blockPosition = position;
         this.itemStack = itemStack;
     }
+
     public Player getPlayer() {
         return this.player;
     }
@@ -53,7 +59,7 @@ public final class WrappedPacketInBlockPlace extends WrappedPacket {
     static {
         if (version.isHigherThan(ServerVersion.v_1_8_8)) {
             WrappedPacketInBlockPlace_1_9.initStatic();
-        } else if(version.isLowerThan(ServerVersion.v_1_9) && version.isHigherThan(ServerVersion.v_1_7_10)){
+        } else if (version.isHigherThan(ServerVersion.v_1_7_10)) {
             WrappedPacketInBlockPlace_1_8.initStatic();
         }
     }

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

@@ -10,6 +10,7 @@ final class WrappedPacketInBlockPlace_1_7_10 extends WrappedPacket {
     private Vector3i blockPosition;
     private ItemStack itemStack;
     private int blockFace;
+
     WrappedPacketInBlockPlace_1_7_10(final Player player, final Object packet) {
         super(player, packet);
     }
@@ -17,14 +18,14 @@ final class WrappedPacketInBlockPlace_1_7_10 extends WrappedPacket {
 
     @Override
     protected void setup() {
-        final PacketPlayInBlockPlace blockPlace = (PacketPlayInBlockPlace)packet;
+        final PacketPlayInBlockPlace blockPlace = (PacketPlayInBlockPlace) packet;
 
         this.blockPosition = new Vector3i(blockPlace.c(), blockPlace.d(), blockPlace.e());
 
         this.blockFace = blockPlace.d();
 
         net.minecraft.server.v1_7_R4.ItemStack stack = blockPlace.getItemStack();
-       this.itemStack = org.bukkit.craftbukkit.v1_7_R4.inventory.CraftItemStack.asBukkitCopy(stack);
+        this.itemStack = org.bukkit.craftbukkit.v1_7_R4.inventory.CraftItemStack.asBukkitCopy(stack);
     }
 
     public Vector3i getBlockPosition() {

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

@@ -1,18 +1,40 @@
 package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
 
 import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
 import io.github.retrooper.packetevents.utils.NMSUtils;
 import io.github.retrooper.packetevents.utils.vector.Vector3i;
 import org.bukkit.inventory.ItemStack;
 
 final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
+    private static final Reflection.MethodInvoker[] blockPositionXYZInvoker = new Reflection.MethodInvoker[3];
+    private static Class<?> blockPlaceClass, blockPositionClass;
+    private static Reflection.FieldAccessor<?> blockPositionAccessor, itemStackFieldAccessor;
     private Vector3i blockPosition;
     private ItemStack itemStack;
+
     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();
+        }
+
+        itemStackFieldAccessor = Reflection.getField(blockPlaceClass, NMSUtils.nmsItemStackClass, 0);
+
+        blockPositionAccessor = Reflection.getField(blockPlaceClass, blockPositionClass, 1);
+
+        blockPositionXYZInvoker[0] = Reflection.getMethod(blockPositionClass.getSuperclass(), "getX");
+        blockPositionXYZInvoker[1] = Reflection.getMethod(blockPositionClass.getSuperclass(), "getY");
+        blockPositionXYZInvoker[2] = Reflection.getMethod(blockPositionClass.getSuperclass(), "getZ");
+    }
+
     @Override
     protected void setup() {
         Object nmsBlockPos = blockPositionAccessor.get(packet);
@@ -33,27 +55,4 @@ final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
     public ItemStack getItemStack() {
         return itemStack;
     }
-
-    private static Class<?> blockPlaceClass, blockPositionClass;
-
-    private static Reflection.FieldAccessor<?> blockPositionAccessor, itemStackFieldAccessor;
-    private static final Reflection.MethodInvoker[] blockPositionXYZInvoker = new Reflection.MethodInvoker[3];
-
-    protected static void initStatic(){
-        try {
-            blockPlaceClass = NMSUtils.getNMSClass("PacketPlayInBlockPlace");
-
-            blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        itemStackFieldAccessor = Reflection.getField(blockPlaceClass, NMSUtils.nmsItemStackClass, 0);
-
-        blockPositionAccessor = Reflection.getField(blockPlaceClass, blockPositionClass, 1);
-
-        blockPositionXYZInvoker[0] = Reflection.getMethod(blockPositionClass.getSuperclass(), "getX");
-        blockPositionXYZInvoker[1] = Reflection.getMethod(blockPositionClass.getSuperclass(), "getY");
-        blockPositionXYZInvoker[2] = Reflection.getMethod(blockPositionClass.getSuperclass(), "getZ");
-    }
 }

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

@@ -10,15 +10,24 @@ import org.bukkit.entity.Player;
 import java.util.HashSet;
 
 final class WrappedPacketInBlockPlace_1_9 extends WrappedPacket {
+    private static Class<?> blockPlaceClass_1_9;
     private Block block;
 
     public WrappedPacketInBlockPlace_1_9(final Player player, final Object packet) {
         super(player, packet);
     }
 
+    protected static void initStatic() {
+        try {
+            blockPlaceClass_1_9 = NMSUtils.getNMSClass("PacketPlayInUseItem");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+
     @Override
     protected void setup() {
-        this.block = getPlayer().getTargetBlock((HashSet<Material>)null, 3);
+        this.block = getPlayer().getTargetBlock((HashSet<Material>) null, 3);
 
     }
 
@@ -30,14 +39,5 @@ final class WrappedPacketInBlockPlace_1_9 extends WrappedPacket {
         return block;
     }
 
-    private static Class<?> blockPlaceClass_1_9;
-    protected static void initStatic() {
-        try {
-            blockPlaceClass_1_9 = NMSUtils.getNMSClass("PacketPlayInUseItem");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-
 
 }

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

@@ -7,28 +7,7 @@ import io.github.retrooper.packetevents.utils.NMSUtils;
 import java.lang.reflect.Field;
 
 public final class WrappedPacketInChat extends WrappedPacket {
-    private String message;
-
-    public WrappedPacketInChat(Object packet) {
-        super(packet);
-    }
-
-    @Override
-    protected void setup() {
-        try {
-            final Object obj = field.get(packet);
-            this.message = obj.toString();
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
-    public String getMessage() {
-        return message;
-    }
-
     private static Class<?> chatPacketClass;
-
     private static Field field;
 
     static {
@@ -48,10 +27,30 @@ public final class WrappedPacketInChat extends WrappedPacket {
         field.setAccessible(true);
     }
 
+    private String message;
+
+    public WrappedPacketInChat(Object packet) {
+        super(packet);
+    }
+
     private static String getChatFieldName() {
         if (version == ServerVersion.v_1_7_10) {
             return "message";
         }
         return "a";
     }
+
+    @Override
+    protected void setup() {
+        try {
+            final Object obj = field.get(packet);
+            this.message = obj.toString();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public String getMessage() {
+        return message;
+    }
 }

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

@@ -1,15 +1,49 @@
 package io.github.retrooper.packetevents.packetwrappers.in.entityaction;
 
+import io.github.retrooper.packetevents.annotations.Nullable;
 import io.github.retrooper.packetevents.enums.PlayerAction;
 import io.github.retrooper.packetevents.enums.ServerVersion;
 import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
 import io.github.retrooper.packetevents.utils.NMSUtils;
 import org.bukkit.entity.Entity;
 
-import io.github.retrooper.packetevents.annotations.Nullable;
 import java.lang.reflect.Field;
 
 public final class WrappedPacketInEntityAction extends WrappedPacket {
+    private static Class<?> entityActionClass;
+    @Nullable
+    private static Class<?> enumPlayerActionClass;
+    private static final Field[] fields = new Field[3];
+    @Nullable
+    private static Object[] enumPlayerActionConstants;
+
+    static {
+        try {
+            entityActionClass = NMSUtils.getNMSClass("PacketPlayInEntityAction");
+            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
+                enumPlayerActionClass = NMSUtils.getNMSClass("PacketPlayInEntityAction$EnumPlayerAction");
+            }
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            //ints in 1.7.10, EnumPlayerAction in 1.8+
+            fields[0] = entityActionClass.getDeclaredField("a");
+            fields[1] = entityActionClass.getDeclaredField("animation");
+            fields[2] = entityActionClass.getDeclaredField("c");
+            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
+                enumPlayerActionConstants = enumPlayerActionClass.getEnumConstants();
+            }
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+
+        for (final Field f : fields) {
+            f.setAccessible(true);
+        }
+    }
+
     private Entity entity;
     private int entityId;
     private PlayerAction action;
@@ -71,41 +105,4 @@ public final class WrappedPacketInEntityAction extends WrappedPacket {
     public int getJumpBoost() {
         return jumpBoost;
     }
-
-    private static Class<?> entityActionClass;
-
-    @Nullable
-    private static Class<?> enumPlayerActionClass;
-
-    private static Field[] fields = new Field[3];
-
-    @Nullable
-    private static Object[] enumPlayerActionConstants;
-
-    static {
-        try {
-            entityActionClass = NMSUtils.getNMSClass("PacketPlayInEntityAction");
-            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
-                enumPlayerActionClass = NMSUtils.getNMSClass("PacketPlayInEntityAction$EnumPlayerAction");
-            }
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            //ints in 1.7.10, EnumPlayerAction in 1.8+
-            fields[0] = entityActionClass.getDeclaredField("a");
-            fields[1] = entityActionClass.getDeclaredField("animation");
-            fields[2] = entityActionClass.getDeclaredField("c");
-            if (version.isHigherThan(ServerVersion.v_1_7_10)) {
-                enumPlayerActionConstants = enumPlayerActionClass.getEnumConstants();
-            }
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
-        }
-
-        for (final Field f : fields) {
-            f.setAccessible(true);
-        }
-    }
 }

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

@@ -8,6 +8,38 @@ import io.github.retrooper.packetevents.utils.NMSUtils;
 import java.lang.reflect.Field;
 
 public class WrappedPacketInFlying extends WrappedPacket {
+    private static Class<?> flyingClass;
+    private static final Field[] fields = new Field[8]; //x, y, z, yaw pitch, onGround, isPositionPacket, isLookPacket
+
+    static {
+
+        try {
+            flyingClass = NMSUtils.getNMSClass("PacketPlayInFlying");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+
+        try {
+            fields[0] = flyingClass.getDeclaredField("x");
+            fields[1] = flyingClass.getDeclaredField("y");
+            fields[2] = flyingClass.getDeclaredField("z");
+            fields[3] = flyingClass.getDeclaredField("yaw");
+            fields[4] = flyingClass.getDeclaredField("pitch");
+            fields[5] = flyingClass.getDeclaredField(getOnGroundFieldName());
+            fields[6] = flyingClass.getDeclaredField("hasPos");
+            fields[7] = flyingClass.getDeclaredField("hasLook");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+
+        for (Field f : fields) {
+            if (f != null) {
+                f.setAccessible(true);
+            }
+        }
+    }
+
     private double x;
     private double y;
     private double z;
@@ -21,6 +53,13 @@ public class WrappedPacketInFlying extends WrappedPacket {
         super(packet);
     }
 
+    private static String getOnGroundFieldName() {
+        if (version == ServerVersion.v_1_7_10) {
+            return "g";
+        }
+        return "f";
+    }
+
     @Override
     protected void setup() {
         try {
@@ -40,38 +79,6 @@ public class WrappedPacketInFlying extends WrappedPacket {
         }
     }
 
-    public static class WrappedPacketInPosition extends WrappedPacketInFlying {
-        public WrappedPacketInPosition(Object packet) {
-            super(packet);
-        }
-
-        @Override
-        public boolean isPosition() {
-            return true;
-        }
-
-        @Override
-        public boolean isLook() {
-            return false;
-        }
-    }
-
-    public static class WrappedPacketInPosition_Look extends WrappedPacketInFlying {
-        public WrappedPacketInPosition_Look(Object packet) {
-            super(packet);
-        }
-
-        @Override
-        public boolean isLook() {
-            return true;
-        }
-
-        @Override
-        public boolean isPosition() {
-            return false;
-        }
-    }
-
     public final double getX() {
         return x;
     }
@@ -104,44 +111,36 @@ public class WrappedPacketInFlying extends WrappedPacket {
         return isLook;
     }
 
-    private static Class<?> flyingClass;
-
-    private static Field[] fields = new Field[8]; //x, y, z, yaw pitch, onGround, isPositionPacket, isLookPacket
-
-    static {
-
-        try {
-            flyingClass = NMSUtils.getNMSClass("PacketPlayInFlying");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
+    public static class WrappedPacketInPosition extends WrappedPacketInFlying {
+        public WrappedPacketInPosition(Object packet) {
+            super(packet);
         }
 
-
-        try {
-            fields[0] = flyingClass.getDeclaredField("x");
-            fields[1] = flyingClass.getDeclaredField("y");
-            fields[2] = flyingClass.getDeclaredField("z");
-            fields[3] = flyingClass.getDeclaredField("yaw");
-            fields[4] = flyingClass.getDeclaredField("pitch");
-            fields[5] = flyingClass.getDeclaredField(getOnGroundFieldName());
-            fields[6] = flyingClass.getDeclaredField("hasPos");
-            fields[7] = flyingClass.getDeclaredField("hasLook");
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
+        @Override
+        public boolean isPosition() {
+            return true;
         }
 
-        for (Field f : fields) {
-            if (f != null) {
-                f.setAccessible(true);
-            }
+        @Override
+        public boolean isLook() {
+            return false;
         }
     }
 
-    private static String getOnGroundFieldName() {
-        if (version == ServerVersion.v_1_7_10) {
-            return "g";
+    public static class WrappedPacketInPosition_Look extends WrappedPacketInFlying {
+        public WrappedPacketInPosition_Look(Object packet) {
+            super(packet);
+        }
+
+        @Override
+        public boolean isLook() {
+            return true;
+        }
+
+        @Override
+        public boolean isPosition() {
+            return false;
         }
-        return "f";
     }
 
 }

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

@@ -7,12 +7,31 @@ import io.github.retrooper.packetevents.utils.NMSUtils;
 import java.lang.reflect.Field;
 
 public final class WrappedPacketInKeepAlive extends WrappedPacket {
-    public WrappedPacketInKeepAlive(final Object packet) {
-        super(packet);
+    private static Class<?> keepAliveClass;
+    //1.7.10->1.12.2 has int field "a", rest as long field "a"
+    private static Field idField;
+
+    static {
+        try {
+            keepAliveClass = NMSUtils.getNMSClass("PacketPlayInKeepAlive");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            idField = keepAliveClass.getDeclaredField("a");
+            idField.setAccessible(true);
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
     }
 
     private long id;
 
+    public WrappedPacketInKeepAlive(final Object packet) {
+        super(packet);
+    }
+
     @Override
     protected void setup() {
         try {
@@ -35,24 +54,4 @@ public final class WrappedPacketInKeepAlive extends WrappedPacket {
     public long getId() {
         return id;
     }
-
-    private static Class<?> keepAliveClass;
-
-    //1.7.10->1.12.2 has int field "a", rest as long field "a"
-    private static Field idField;
-
-    static {
-        try {
-            keepAliveClass = NMSUtils.getNMSClass("PacketPlayInKeepAlive");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            idField = keepAliveClass.getDeclaredField("a");
-            idField.setAccessible(true);
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
-        }
-    }
 }

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

@@ -0,0 +1,51 @@
+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;
+
+public final class WrappedPacketInTransaction extends WrappedPacket {
+    private int windowId;
+    private short actionNumber;
+    private boolean accepted;
+    public WrappedPacketInTransaction(final Object packet) {
+        super(packet);
+    }
+
+    @Override
+    protected void setup() {
+        this.windowId = windowIdAccessor.get(packet);
+        this.actionNumber = actionNumberAccessor.get(packet);
+        this.accepted = acceptedAccessor.get(packet);
+    }
+
+    public int getWindowId() {
+        return windowId;
+    }
+
+    public short getActionNumber() {
+        return actionNumber;
+    }
+
+    public boolean isAccepted() {
+        return accepted;
+    }
+
+    private static Class<?> packetClass;
+
+    private static final Reflection.FieldAccessor<Integer> windowIdAccessor;
+    private static final Reflection.FieldAccessor<Short> actionNumberAccessor;
+    private static final Reflection.FieldAccessor<Boolean> acceptedAccessor;
+
+    static {
+        try {
+            packetClass = NMSUtils.getNMSClass("PacketPlayInTransaction");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        windowIdAccessor = Reflection.getField(packetClass, int.class, 0);
+        actionNumberAccessor = Reflection.getField(packetClass, short.class, 0);
+        acceptedAccessor= Reflection.getField(packetClass, boolean.class, 0);
+    }
+}

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

@@ -8,46 +8,9 @@ import org.bukkit.entity.Entity;
 import java.lang.reflect.Field;
 
 public final class WrappedPacketInUseEntity extends WrappedPacket {
-    private int entityId;
-    private Entity entity;
-    private EntityUseAction action;
-
-    public WrappedPacketInUseEntity(final Object packet) {
-        super(packet);
-    }
-
-
-    @Override
-    protected void setup() {
-        try {
-            this.entityId = fields[0].getInt(packet);
-            this.entity = NMSUtils.getEntityById(this.entityId);
-            final Object useActionEnum = fields[1].get(packet);
-            this.action = EntityUseAction.valueOf(useActionEnum.toString());
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
-        }
-    }
-
-
-    public Entity getEntity() {
-        return entity;
-    }
-
-    public int getEntityId() {
-        return entityId;
-    }
-
-    public EntityUseAction getAction() {
-        return action;
-    }
-
     private static Class<?> useEntityClass;
-
     private static Class<?> entityClass;
-
-
-    private static Field[] fields = new Field[2];
+    private static final Field[] fields = new Field[2];
 
     static {
 
@@ -75,4 +38,36 @@ public final class WrappedPacketInUseEntity extends WrappedPacket {
         }
 
     }
+
+    private int entityId;
+    private Entity entity;
+    private EntityUseAction action;
+
+    public WrappedPacketInUseEntity(final Object packet) {
+        super(packet);
+    }
+
+    @Override
+    protected void setup() {
+        try {
+            this.entityId = fields[0].getInt(packet);
+            this.entity = NMSUtils.getEntityById(this.entityId);
+            final Object useActionEnum = fields[1].get(packet);
+            this.action = EntityUseAction.valueOf(useActionEnum.toString());
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public Entity getEntity() {
+        return entity;
+    }
+
+    public int getEntityId() {
+        return entityId;
+    }
+
+    public EntityUseAction getAction() {
+        return action;
+    }
 }

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

@@ -1,55 +0,0 @@
-package io.github.retrooper.packetevents.packetwrappers.login;
-
-import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection.FieldAccessor;
-import io.github.retrooper.packetevents.utils.NMSUtils;
-
-
-public final class WrappedPacketLoginHandshake extends WrappedPacket {
-    private int protocolVersion, port;
-    private String hostname;
-
-    public WrappedPacketLoginHandshake(final Object packet) {
-        super(packet);
-    }
-
-    @Override
-    protected void setup() {
-        final Object protocolVersionObj = fields[0].get(packet);
-        final Object hostNameObj = fields[1].get(packet);
-        final Object portObj = fields[2].get(packet);
-
-        this.protocolVersion = (int)protocolVersionObj;
-        this.hostname = hostNameObj.toString();
-        this.port = (int)portObj;
-    }
-
-    public int getProtocolVersion() {
-        return protocolVersion;
-    }
-
-    public String getHostname() {
-        return hostname;
-    }
-
-    public int getPort() {
-        return port;
-    }
-
-    private static Class<?> loginHandshakeClass;
-
-    private static FieldAccessor<?>[] fields = new FieldAccessor[3];
-
-    static {
-        try {
-            loginHandshakeClass = NMSUtils.getNMSClass("PacketHandshakingInSetProtocol");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        fields[0] = Reflection.getField(loginHandshakeClass, int.class, 0);
-        fields[1] = Reflection.getField(loginHandshakeClass, String.class, 0);
-        fields[2] = Reflection.getField(loginHandshakeClass, int.class, 1);
-    }
-}

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

@@ -0,0 +1,52 @@
+package io.github.retrooper.packetevents.packetwrappers.out.abilities;
+
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class PlayerAbilitiesUtils {
+
+    public static Class<?> playerAbilitiesClass;
+
+    public static Constructor<?> playerAbilitiesConstructor;
+
+    private static final Reflection.FieldAccessor<Boolean>[] booleanFieldAccessors = new Reflection.FieldAccessor[4];
+    private static final Reflection.FieldAccessor<Float>[] floatFieldAccessors = new Reflection.FieldAccessor[2];
+
+    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();
+        booleanFieldAccessors[0].set(instance, isVulnerable);
+        booleanFieldAccessors[1].set(instance, isFlying);
+        booleanFieldAccessors[2].set(instance, allowFlight);
+        booleanFieldAccessors[3].set(instance, canBuildInstantly);
+
+        floatFieldAccessors[0].set(instance, flySpeed);
+        floatFieldAccessors[1].set(instance, walkSpeed);
+
+        return instance;
+    }
+
+    static {
+        try {
+            playerAbilitiesClass = NMSUtils.getNMSClass("PlayerAbilities");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+        try {
+            playerAbilitiesConstructor = playerAbilitiesClass.getConstructor();
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+        for (byte i = 0; i < booleanFieldAccessors.length; i++) {
+            booleanFieldAccessors[i] = Reflection.getField(playerAbilitiesClass, boolean.class, i);
+        }
+
+        for (byte i = 0; i < floatFieldAccessors.length; i++) {
+            floatFieldAccessors[i] = Reflection.getField(playerAbilitiesClass, float.class, i);
+        }
+    }
+}

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

@@ -0,0 +1,102 @@
+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 java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class WrappedPacketOutAbilities extends WrappedPacket implements Sendable {
+    private boolean vulnerable, flying, allowFlight, instantBuild;
+    private float flySpeed, walkSpeed;
+
+    public WrappedPacketOutAbilities(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutAbilities(final boolean isVulnerable, final boolean isFlying, final boolean allowFlight, final boolean canBuildInstantly,
+                                     final float flySpeed, final float walkSpeed) {
+        super(null);
+        this.vulnerable = isVulnerable;
+        this.flying = isFlying;
+        this.allowFlight = allowFlight;
+        this.instantBuild = canBuildInstantly;
+        this.flySpeed = flySpeed;
+        this.walkSpeed = walkSpeed;
+    }
+
+    @Override
+    protected void setup() {
+        this.vulnerable = booleanFieldAccessors[0].get(packet);
+        this.flying = booleanFieldAccessors[1].get(packet);
+        this.allowFlight = booleanFieldAccessors[2].get(packet);
+        this.instantBuild = booleanFieldAccessors[3].get(packet);
+
+        this.flySpeed = floatFieldAccessors[0].get(packet);
+        this.walkSpeed = floatFieldAccessors[1].get(packet);
+    }
+
+    public boolean isVulnerable() {
+        return vulnerable;
+    }
+
+    public boolean isFlying() {
+        return flying;
+    }
+
+    public boolean isFlightAllowed() {
+        return allowFlight;
+    }
+
+    public boolean canInstantlyBuild() {
+        return instantBuild;
+    }
+
+    public float getFlySpeed() {
+        return flySpeed;
+    }
+
+    public float getWalkSpeed() {
+        return walkSpeed;
+    }
+
+    private static Class<?> packetClass;
+
+    private static Constructor<?> packetConstructor;
+
+    private static final Reflection.FieldAccessor<Boolean>[] booleanFieldAccessors = new Reflection.FieldAccessor[4];
+    private static final Reflection.FieldAccessor<Float>[] floatFieldAccessors = new Reflection.FieldAccessor[2];
+
+    static {
+        try {
+            packetClass = NMSUtils.getNMSClass("PacketPlayOutAbilities");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            packetConstructor = packetClass.getConstructor(PlayerAbilitiesUtils.playerAbilitiesClass);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+        for (byte i = 0; i < booleanFieldAccessors.length; i++) {
+            booleanFieldAccessors[i] = Reflection.getField(packetClass, boolean.class, i);
+        }
+
+        for (byte i = 0; i < floatFieldAccessors.length; i++) {
+            floatFieldAccessors[i] = Reflection.getField(packetClass, float.class, i);
+        }
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(PlayerAbilitiesUtils.getPlayerAbilities(vulnerable, flying, allowFlight, instantBuild, flySpeed, walkSpeed));
+        } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

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

@@ -11,6 +11,36 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutAnimation extends WrappedPacket implements Sendable {
+    private static Class<?> animationClass, nmsEntityClass;
+    private static Constructor<?> animationConstructor;
+    private static final Field[] fields = new Field[2];
+
+    static {
+        try {
+            animationClass = NMSUtils.getNMSClass("PacketPlayOutAnimation");
+            nmsEntityClass = NMSUtils.getNMSClass("Entity");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            animationConstructor = animationClass.getConstructor(nmsEntityClass, int.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+        try {
+            fields[0] = animationClass.getDeclaredField("a");
+            fields[1] = animationClass.getDeclaredField("b");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+
+        for (final Field f : fields) {
+            f.setAccessible(true);
+        }
+
+    }
+
     private Entity entity;
     private int entityID;
     private EntityAnimationType type;
@@ -52,7 +82,6 @@ public final class WrappedPacketOutAnimation extends WrappedPacket implements Se
         return type;
     }
 
-
     @Override
     public Object asNMSPacket() {
         final Object nmsEntity = NMSUtils.getNMSEntity(this.entity);
@@ -64,35 +93,4 @@ public final class WrappedPacketOutAnimation extends WrappedPacket implements Se
         }
         return null;
     }
-
-    private static Class<?> animationClass, nmsEntityClass;
-    private static Constructor<?> animationConstructor;
-
-    private static Field[] fields = new Field[2];
-
-    static {
-        try {
-            animationClass = NMSUtils.getNMSClass("PacketPlayOutAnimation");
-            nmsEntityClass = NMSUtils.getNMSClass("Entity");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            animationConstructor = animationClass.getConstructor(nmsEntityClass, int.class);
-        } catch (NoSuchMethodException e) {
-            e.printStackTrace();
-        }
-        try {
-            fields[0] = animationClass.getDeclaredField("a");
-            fields[1] = animationClass.getDeclaredField("b");
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
-        }
-
-        for (final Field f : fields) {
-            f.setAccessible(true);
-        }
-
-    }
 }

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

@@ -11,71 +11,9 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 public final class WrappedPacketOutChat extends WrappedPacket implements Sendable {
-    private String message;
-
-    public WrappedPacketOutChat(final Object packet) {
-        super(packet);
-    }
-
-    public WrappedPacketOutChat(final String message) {
-        super(null);
-        this.message = "{\"text\": \"" + message + "\"}";
-    }
-
-    @Override
-    protected void setup() {
-        //all fields are IChatBaseComponents, and named 'a'
-
-        try {
-            Object iChatBaseObj = iChatBaseField.get(packet);
-
-            Object contentString = getStringOfIChatBase.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();
-        }
-
-        return null;
-    }
-
-    public static String toStringFromIChatBaseComponent(Object obj) {
-        try {
-            return getStringOfIChatBase.invoke(obj).toString();
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-        return null;
-    }
-
-    public static Object toIChatBaseComponent(String msg) {
-        try {
-            return serialize.invoke(null, msg);
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-        return null;
-    }
-
-    public String getMessage() {
-        return this.message;
-    }
-
     private static Constructor<?> chatClassConstructor;
-
     private static Class<?> chatClass, iChatBaseComponentClass, chatSerializerClass;
-
     private static Field iChatBaseField;
-
     private static Method serialize, getStringOfIChatBase;
 
     static {
@@ -84,15 +22,14 @@ public final class WrappedPacketOutChat extends WrappedPacket implements Sendabl
             iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
 
             //In 1.8.3+ the ChatSerializer class is declared in the IChatBaseComponent class, so we have to handle tahat
-            if(version.isHigherThan(ServerVersion.v_1_8)) {
-                for(final Class<?> cls : iChatBaseComponentClass.getDeclaredClasses()) {
-                    if(cls.getSimpleName().equals("ChatSerializer")) {
+            if (version.isHigherThan(ServerVersion.v_1_8)) {
+                for (final Class<?> cls : iChatBaseComponentClass.getDeclaredClasses()) {
+                    if (cls.getSimpleName().equals("ChatSerializer")) {
                         chatSerializerClass = cls;
                         break;
                     }
                 }
-            }
-            else {
+            } else {
                 chatSerializerClass = NMSUtils.getNMSClass("ChatSerializer");
             }
         } catch (ClassNotFoundException e) {
@@ -121,6 +58,35 @@ public final class WrappedPacketOutChat extends WrappedPacket implements Sendabl
 
     }
 
+    private String message;
+
+    public WrappedPacketOutChat(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutChat(final String message) {
+        super(null);
+        this.message = "{\"text\": \"" + message + "\"}";
+    }
+
+    public static String toStringFromIChatBaseComponent(Object obj) {
+        try {
+            return getStringOfIChatBase.invoke(obj).toString();
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object toIChatBaseComponent(String msg) {
+        try {
+            return serialize.invoke(null, msg);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
     private static String getTextMethodName() {
         //1.7.10
         if (version.isLowerThan(ServerVersion.v_1_8)) {
@@ -129,4 +95,34 @@ public final class WrappedPacketOutChat extends WrappedPacket implements Sendabl
             return "getText";
         }
     }
+
+    @Override
+    protected void setup() {
+        //all fields are IChatBaseComponents, and named 'a'
+
+        try {
+            Object iChatBaseObj = iChatBaseField.get(packet);
+
+            Object contentString = getStringOfIChatBase.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();
+        }
+
+        return null;
+    }
+
+    public String getMessage() {
+        return this.message;
+    }
 }

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

@@ -11,6 +11,58 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutEntityVelocity extends WrappedPacket implements Sendable {
+    private static Constructor<?> velocityConstructor, vec3dConstructor;
+    private static Class<?> velocityClass, vec3dClass;
+    private static final Field[] fields = new Field[4];
+
+    /**
+     * Velocity Constructor parameter types:
+     * 1.7.10->1.13.2 use int, double, double, double style,
+     * 1.14+ use int, Vec3D style
+     */
+    static {
+        try {
+
+            velocityClass = NMSUtils.getNMSClass("PacketPlayOutEntityVelocity");
+            if (version.isHigherThan(ServerVersion.v_1_13_2)) {
+                vec3dClass = NMSUtils.getNMSClass("Vec3D");
+            }
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            if (version.isHigherThan(ServerVersion.v_1_13_2)) {
+                velocityConstructor = velocityClass.getConstructor(int.class, vec3dClass);
+                //vec3d constructor
+                vec3dConstructor = vec3dClass.getConstructor(double.class, double.class, double.class);
+            } else {
+                velocityConstructor = velocityClass.getConstructor(int.class, double.class, double.class, double.class);
+            }
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            //entity id
+            fields[0] = velocityClass.getDeclaredField("a");
+            //x
+            fields[1] = velocityClass.getDeclaredField("b");
+            //y
+            fields[2] = velocityClass.getDeclaredField("c");
+            //z
+            fields[3] = velocityClass.getDeclaredField("d");
+        } catch (NoSuchFieldException e) {
+            e.printStackTrace();
+        }
+
+        for (final Field f : fields) {
+            f.setAccessible(true);
+        }
+
+
+    }
+
     private Entity entity;
     private int entityId;
     private double velocityX, velocityY, velocityZ;
@@ -87,59 +139,4 @@ public final class WrappedPacketOutEntityVelocity extends WrappedPacket implemen
         return null;
     }
 
-
-    private static Constructor<?> velocityConstructor, vec3dConstructor;
-    private static Class<?> velocityClass, vec3dClass;
-
-    private static Field[] fields = new Field[4];
-
-
-    /**
-     * Velocity Constructor parameter types:
-     * 1.7.10->1.13.2 use int, double, double, double style,
-     * 1.14+ use int, Vec3D style
-     */
-    static {
-        try {
-
-            velocityClass = NMSUtils.getNMSClass("PacketPlayOutEntityVelocity");
-            if (version.isHigherThan(ServerVersion.v_1_13_2)) {
-                vec3dClass = NMSUtils.getNMSClass("Vec3D");
-            }
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            if (version.isHigherThan(ServerVersion.v_1_13_2)) {
-                velocityConstructor = velocityClass.getConstructor(int.class, vec3dClass);
-                //vec3d constructor
-                vec3dConstructor = vec3dClass.getConstructor(double.class, double.class, double.class);
-            } else {
-                velocityConstructor = velocityClass.getConstructor(int.class, double.class, double.class, double.class);
-            }
-        } catch (NoSuchMethodException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            //entity id
-            fields[0] = velocityClass.getDeclaredField("a");
-            //x
-            fields[1] = velocityClass.getDeclaredField("b");
-            //y
-            fields[2] = velocityClass.getDeclaredField("c");
-            //z
-            fields[3] = velocityClass.getDeclaredField("d");
-        } catch (NoSuchFieldException e) {
-            e.printStackTrace();
-        }
-
-        for (final Field f : fields) {
-            f.setAccessible(true);
-        }
-
-
-    }
-
 }

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

@@ -3,13 +3,33 @@ package io.github.retrooper.packetevents.packetwrappers.out.kickdisconnect;
 import io.github.retrooper.packetevents.packetwrappers.Sendable;
 import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
 import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOutChat;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
 import io.github.retrooper.packetevents.utils.NMSUtils;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutKickDisconnect extends WrappedPacket implements Sendable {
+    private static final Reflection.FieldAccessor<?> iChatBaseComponentAccessor;
+    private static Class<?> packetClass, iChatBaseComponentClass;
+    private static Constructor<?> kickDisconnectConstructor;
+
+    static {
+        try {
+            packetClass = NMSUtils.getNMSClass("PacketPlayOutKickDisconnect");
+            iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            kickDisconnectConstructor = packetClass.getConstructor(iChatBaseComponentClass);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+        iChatBaseComponentAccessor = Reflection.getField(packetClass, iChatBaseComponentClass, 0);
+    }
+
     private String kickMessage;
 
     public WrappedPacketOutKickDisconnect(final Object packet) {
@@ -39,26 +59,4 @@ public final class WrappedPacketOutKickDisconnect extends WrappedPacket implemen
         }
         return null;
     }
-
-    private static Class<?> packetClass, iChatBaseComponentClass;
-
-    private static Constructor<?> kickDisconnectConstructor;
-
-    private static final Reflection.FieldAccessor<?> iChatBaseComponentAccessor;
-
-    static {
-        try {
-            packetClass = NMSUtils.getNMSClass("PacketPlayOutKickDisconnect");
-            iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        try {
-            kickDisconnectConstructor = packetClass.getConstructor(iChatBaseComponentClass);
-        } catch (NoSuchMethodException e) {
-            e.printStackTrace();
-        }
-        iChatBaseComponentAccessor = Reflection.getField(packetClass, iChatBaseComponentClass, 0);
-    }
 }

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

@@ -0,0 +1,80 @@
+package io.github.retrooper.packetevents.packetwrappers.out.transaction;
+
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutTransaction extends WrappedPacket implements Sendable {
+    private int windowId;
+    private short actionNumber;
+    private boolean accepted;
+    public WrappedPacketOutTransaction(final Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutTransaction(final int windowId, final short actionNumber, final boolean accepted) {
+        super(null);
+        this.windowId = windowId;
+        this.actionNumber = actionNumber;
+        this.accepted = accepted;
+    }
+    @Override
+    protected void setup() {
+        this.windowId = windowIdAccessor.get(packet);
+        this.actionNumber = actionNumberAccessor.get(packet);
+        this.accepted = acceptedAccessor.get(packet);
+    }
+
+    public int getWindowId() {
+        return windowId;
+    }
+
+    public short getActionNumber() {
+        return actionNumber;
+    }
+
+    public boolean isAccepted() {
+        return accepted;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(windowId, actionNumber, accepted);
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    private static Class<?> packetClass;
+
+    private static Constructor<?> packetConstructor;
+
+    private static final Reflection.FieldAccessor<Integer> windowIdAccessor;
+    private static final Reflection.FieldAccessor<Short> actionNumberAccessor;
+    private static final Reflection.FieldAccessor<Boolean> acceptedAccessor;
+
+    static {
+        try {
+            packetClass = NMSUtils.getNMSClass("PacketPlayOutTransaction");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            packetConstructor = packetClass.getConstructor(int.class, short.class, boolean.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+        windowIdAccessor = Reflection.getField(packetClass, int.class, 0);
+        actionNumberAccessor = Reflection.getField(packetClass, short.class, 0);
+        acceptedAccessor= Reflection.getField(packetClass, boolean.class, 0);
+    }
+
+}

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

@@ -0,0 +1,85 @@
+package io.github.retrooper.packetevents.packetwrappers.out.updatehealth;
+
+import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.packetwrappers.api.WrappedPacket;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
+import io.github.retrooper.packetevents.utils.NMSUtils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public final class WrappedPacketOutUpdateHealth extends WrappedPacket implements Sendable {
+    private float health, foodSaturation;
+    private int food;
+    public WrappedPacketOutUpdateHealth(final Object packet) {
+        super(packet);
+    }
+
+    /**
+     * See https://wiki.vg/Protocol#Update_Health
+     * @param health
+     * @param food
+     * @param foodSaturation
+     */
+    public WrappedPacketOutUpdateHealth(final float health, final int food, final float foodSaturation) {
+        super(null);
+        this.health= health;
+        this.food = food;
+        this.foodSaturation = foodSaturation;
+    }
+
+    @Override
+    protected void setup() {
+        this.health = healthAccessor.get(packet);
+        this.foodSaturation = foodSaturationAccessor.get(packet);
+        this.food = foodAccessor.get(packet);
+    }
+
+    public float getHealth() {
+        return health;
+    }
+
+    public float getFoodSaturation() {
+        return foodSaturation;
+    }
+
+    public int getFood() {
+        return food;
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(health, food, foodSaturation);
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    private static Class<?> packetClass;
+
+    private static Constructor<?> packetConstructor;
+
+    private static final Reflection.FieldAccessor<Float> healthAccessor, foodSaturationAccessor;
+
+    private static final Reflection.FieldAccessor<Integer> foodAccessor;
+
+    static {
+        try {
+            packetClass = NMSUtils.getNMSClass("PacketPlayOutUpdateHealth");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            packetConstructor = packetClass.getConstructor(float.class, int.class, float.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+
+        healthAccessor = Reflection.getField(packetClass, float.class, 0);
+        foodSaturationAccessor = Reflection.getField(packetClass, float.class, 1);
+        foodAccessor = Reflection.getField(packetClass, int.class, 0);
+    }
+}

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

@@ -1,4 +1,4 @@
-package io.github.retrooper.packetevents.tinyprotocol;
+package io.github.retrooper.packetevents.reflectionutils;
 
 import org.bukkit.Bukkit;
 
@@ -15,72 +15,12 @@ import java.util.regex.Pattern;
  * @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(".", "");
-
+    private static final String OBC_PREFIX = Bukkit.getServer().getClass().getPackage().getName();
+    private static final String NMS_PREFIX = OBC_PREFIX.replace("org.bukkit.craftbukkit", "net.minecraft.server");
+    private static final String VERSION = OBC_PREFIX.replace("org.bukkit.craftbukkit", "").replace(".", "");
     // Variable replacement
-    private static Pattern MATCH_VARIABLE = Pattern.compile("\\{([^\\}]+)\\}");
-
+    private static final Pattern MATCH_VARIABLE = Pattern.compile("\\{([^\\}]+)\\}");
     private Reflection() {
         // Seal class
     }
@@ -88,8 +28,8 @@ public final class Reflection {
     /**
      * 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 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.
      */
@@ -101,7 +41,7 @@ public final class Reflection {
      * 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 name      - the name of the field, or NULL to ignore.
      * @param fieldType - a compatible field type.
      * @return The field accessor.
      */
@@ -112,9 +52,9 @@ public final class Reflection {
     /**
      * Retrieve a field accessor for a specific field type and name.
      *
-     * @param target - the target type.
+     * @param target    - the target type.
      * @param fieldType - a compatible field type.
-     * @param index - the number of compatible fields to skip.
+     * @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) {
@@ -126,7 +66,7 @@ public final class Reflection {
      *
      * @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.
+     * @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) {
@@ -180,9 +120,9 @@ public final class Reflection {
     /**
      * 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 className  - lookup name of the class, see {@link #getClass(String)}.
      * @param methodName - the method name, or NULL to skip.
-     * @param params - the expected parameters.
+     * @param params     - the expected parameters.
      * @return An object that invokes this specific method.
      * @throws IllegalStateException If we cannot find this method.
      */
@@ -193,9 +133,9 @@ public final class Reflection {
     /**
      * Search for the first publicly and privately defined method of the given name and parameter count.
      *
-     * @param clazz - a class to start with.
+     * @param clazz      - a class to start with.
      * @param methodName - the method name, or NULL to skip.
-     * @param params - the expected parameters.
+     * @param params     - the expected parameters.
      * @return An object that invokes this specific method.
      * @throws IllegalStateException If we cannot find this method.
      */
@@ -206,10 +146,10 @@ public final class Reflection {
     /**
      * Search for the first publicly and privately defined method of the given name and parameter count.
      *
-     * @param clazz - a class to start with.
+     * @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.
+     * @param params     - the expected parameters.
      * @return An object that invokes this specific method.
      * @throws IllegalStateException If we cannot find this method.
      */
@@ -246,7 +186,7 @@ public final class Reflection {
      * 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.
+     * @param params    - the expected parameters.
      * @return An object that invokes this constructor.
      * @throws IllegalStateException If we cannot find this method.
      */
@@ -257,7 +197,7 @@ public final class Reflection {
     /**
      * Search for the first publically and privately defined constructor of the given name and parameter count.
      *
-     * @param clazz - a class to start with.
+     * @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.
@@ -291,12 +231,12 @@ public final class Reflection {
      * 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.
+     * @see {@link #getClass()} for more information.
      */
     public static Class<Object> getUntypedClass(String lookupName) {
-        @SuppressWarnings({ "rawtypes", "unchecked" })
+        @SuppressWarnings({"rawtypes", "unchecked"})
         Class<Object> clazz = (Class) getClass(lookupName);
         return clazz;
     }
@@ -400,4 +340,62 @@ public final class Reflection {
         matcher.appendTail(output);
         return output.toString();
     }
+
+    /**
+     * 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);
+    }
 }

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

@@ -1,544 +0,0 @@
-/*
- * This file is part of Hawk Anticheat.
- * Copyright (C) 2018 Hawk Development Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package io.github.retrooper.packetevents.tinyprotocol;
-
-import io.github.retrooper.packetevents.PacketEvents;
-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 io.github.retrooper.packetevents.tinyprotocol.Reflection.FieldAccessor;
-import io.github.retrooper.packetevents.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.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.HandlerList;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerLoginEvent;
-import org.bukkit.event.server.PluginDisableEvent;
-import org.bukkit.plugin.Plugin;
-import org.bukkit.scheduler.BukkitRunnable;
-
-import 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 abstract class TinyProtocol7 {
-    private static final AtomicInteger ID = new AtomicInteger(0);
-
-    // Used in order to lookup a channel
-    private static final MethodInvoker getPlayerHandle = Reflection.getMethod("{obc}.entity.CraftPlayer", "getHandle");
-    private static final FieldAccessor<Object> getConnection = Reflection.getField("{nms}.EntityPlayer", "playerConnection", Object.class);
-    private static final FieldAccessor<Object> getManager = Reflection.getField("{nms}.PlayerConnection", "networkManager", Object.class);
-    private static final FieldAccessor<Channel> getChannel = Reflection.getField("{nms}.NetworkManager", Channel.class, 0);
-
-    // Looking up ServerConnection
-    private static final Class<Object> minecraftServerClass = Reflection.getUntypedClass("{nms}.MinecraftServer");
-    private static final Class<Object> serverConnectionClass = Reflection.getUntypedClass("{nms}.ServerConnection");
-    private static final FieldAccessor<Object> getMinecraftServer = Reflection.getField("{obc}.CraftServer", minecraftServerClass, 0);
-    private static final FieldAccessor<Object> getServerConnection = Reflection.getField(minecraftServerClass, serverConnectionClass, 0);
-    private static final MethodInvoker getNetworkMarkers = Reflection.getTypedMethod(serverConnectionClass, null, List.class, serverConnectionClass);
-
-    // Packets we have to intercept
-    private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getMinecraftClass("PacketLoginInStart");
-    private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
-
-    // Speedup channel/protocol lookup
-    private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
-    private Listener listener;
-
-    // Channels that have already been removed
-    private final Set<Channel> uninjectedChannels = Collections.newSetFromMap(new MapMaker().weakKeys().<Channel, Boolean>makeMap());
-
-    // List of network markers
-    private List<Object> networkManagers;
-
-    // Injected channel handlers
-    private List<Channel> serverChannels = Lists.newArrayList();
-    private ChannelInboundHandlerAdapter serverChannelHandler;
-    private ChannelInitializer<Channel> beginInitProtocol;
-    private ChannelInitializer<Channel> endInitProtocol;
-
-    // Current handler name
-    private String handlerName;
-
-    protected volatile boolean closed;
-    protected Plugin plugin;
-
-    /**
-     * Construct a new instance of TinyProtocol, and start intercepting packets for all connected clients and future clients.
-     * <p>
-     * You can construct multiple instances per plugin.
-     *
-     * @param plugin - the plugin.
-     */
-    public TinyProtocol7(final Plugin plugin) {
-        this.plugin = plugin;
-
-        // Compute handler name
-        this.handlerName = getHandlerName();
-
-        // Prepare existing players
-        registerBukkitEvents();
-
-        try {
-            registerChannelHandler();
-            registerPlayers(plugin);
-        } catch (IllegalArgumentException ex) {
-            // Damn you, late bind
-            plugin.getLogger().info("[TinyProtocol] Delaying server channel injection due to late bind.");
-
-            new BukkitRunnable() {
-                @Override
-                public void run() {
-                    registerChannelHandler();
-                    registerPlayers(plugin);
-                    plugin.getLogger().info("[TinyProtocol] Late bind injection successful.");
-                }
-            }.runTask(plugin);
-        }
-    }
-
-    private void createServerChannelHandler() {
-        // Handle connected channels
-        endInitProtocol = new ChannelInitializer<Channel>() {
-
-            @Override
-            protected void initChannel(Channel channel) throws Exception {
-                try {
-                    // This can take a while, so we need to stop the main thread from interfering
-                    synchronized (networkManagers) {
-                        // Stop injecting channels
-                        if (!closed) {
-                            channel.eventLoop().submit(() -> injectChannelInternal(channel));
-                        }
-                    }
-                } catch (Exception e) {
-                    plugin.getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
-                }
-            }
-
-        };
-
-        // This is executed before Minecraft's channel handler
-        beginInitProtocol = new ChannelInitializer<Channel>() {
-
-            @Override
-            protected void initChannel(Channel channel) throws Exception {
-                channel.pipeline().addLast(endInitProtocol);
-            }
-
-        };
-
-        serverChannelHandler = new ChannelInboundHandlerAdapter() {
-
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-                Channel channel = (Channel) msg;
-
-                // Prepare to initialize ths channel
-                channel.pipeline().addFirst(beginInitProtocol);
-                ctx.fireChannelRead(msg);
-            }
-
-        };
-    }
-
-    /**
-     * Register bukkit events.
-     */
-    private void registerBukkitEvents() {
-        listener = new Listener() {
-
-            @EventHandler(priority = EventPriority.LOWEST)
-            public final void onPlayerLogin(PlayerLoginEvent e) {
-                if (closed)
-                    return;
-
-                Channel channel = getChannel(e.getPlayer());
-
-                // Don't inject players that have been explicitly uninjected
-                if (!uninjectedChannels.contains(channel)) {
-                    injectPlayer(e.getPlayer());
-                }
-            }
-
-            @EventHandler
-            public final void onPluginDisable(PluginDisableEvent e) {
-                if (e.getPlugin().equals(plugin)) {
-                    close();
-                }
-            }
-
-        };
-
-        plugin.getServer().getPluginManager().registerEvents(listener, plugin);
-    }
-
-    @SuppressWarnings("unchecked")
-    private void registerChannelHandler() {
-        Object mcServer = getMinecraftServer.get(Bukkit.getServer());
-        Object serverConnection = getServerConnection.get(mcServer);
-        boolean looking = true;
-
-        // We need to synchronize against this list
-        networkManagers = (List<Object>) getNetworkMarkers.invoke(null, serverConnection);
-        createServerChannelHandler();
-
-        // Find the correct list, or implicitly throw an exception
-        for (int i = 0; looking; i++) {
-            List<Object> list = Reflection.getField(serverConnection.getClass(), List.class, i).get(serverConnection);
-
-            for (Object item : list) {
-                if (!(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) {
-        final String packetName = packet.getClass().getSimpleName();
-        final PacketSendEvent packetSendEvent = new PacketSendEvent(receiver, packetName, packet);
-        PacketEvents.getEventManager().callEvent(packetSendEvent);
-        if (!packetSendEvent.isCancelled()) {
-            return packet;
-        }
-        return null;
-    }
-
-    /**
-     * Invoked when the server has received a packet from a given player.
-     * <p>
-     * Use {@link Channel#remoteAddress()} to get the remote address of the client.
-     *
-     * @param sender  - the player that sent the packet, NULL for early login/status packets.
-     * @param channel - channel that received the packet. Never NULL.
-     * @param packet  - the packet being received.
-     * @return The packet to recieve instead, or NULL to cancel.
-     */
-    public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
-        return packet;
-    }
-
-    /**
-     * Send a packet to a particular player.
-     * <p>
-     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param player - the destination player.
-     * @param packet - the packet to send.
-     */
-    public void sendPacket(Player player, Object packet) {
-        sendPacket(getChannel(player), packet);
-    }
-
-    /**
-     * Send a packet to a particular client.
-     * <p>
-     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param channel - client identified by a channel.
-     * @param packet  - the packet to send.
-     */
-    public void sendPacket(Channel channel, Object packet) {
-        channel.pipeline().writeAndFlush(packet);
-    }
-
-    /**
-     * Pretend that a given packet has been received from a player.
-     * <p>
-     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param player - the player that sent the packet.
-     * @param packet - the packet that will be received by the server.
-     */
-    public void receivePacket(Player player, Object packet) {
-        receivePacket(getChannel(player), packet);
-    }
-
-    /**
-     * Pretend that a given packet has been received from a given client.
-     * <p>
-     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param channel - client identified by a channel.
-     * @param packet  - the packet that will be received by the server.
-     */
-    public void receivePacket(Channel channel, Object packet) {
-        channel.pipeline().context("encoder").fireChannelRead(packet);
-    }
-
-
-    /**
-     * Changed from "tiny-" to "packetevents"
-     * @return handlerName
-     */
-    protected String getHandlerName() {
-        return "packetevents-" + plugin.getName() + "-" + ID.incrementAndGet();
-    }
-
-    /**
-     * Add a custom channel handler to the given player's channel pipeline, allowing us to intercept sent and received packets.
-     * <p>
-     * This will automatically be called when a player has logged in.
-     *
-     * @param player - the player to inject.
-     */
-    public void injectPlayer(Player player) {
-        final PlayerInjectEvent playerInjectEvent = new PlayerInjectEvent(player);
-        PacketEvents.getEventManager().callEvent(playerInjectEvent);
-        if (!playerInjectEvent.isCancelled()) {
-            injectChannelInternal(getChannel(player)).player = player;
-        }
-    }
-
-    /**
-     * Add a custom channel handler to the given channel.
-     *
-     * @param channel - the channel to inject.
-     * @return The intercepted channel, or NULL if it has already been injected.
-     */
-    public void injectChannel(Channel channel) {
-        injectChannelInternal(channel);
-    }
-
-    /**
-     * Add a custom channel handler to the given channel.
-     *
-     * @param channel - the channel to inject.
-     * @return The packet interceptor.
-     */
-    private PacketInterceptor injectChannelInternal(Channel channel) {
-        try {
-            PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
-
-            // Inject our packet interceptor
-            if (interceptor == null) {
-                interceptor = new PacketInterceptor();
-                channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
-                uninjectedChannels.remove(channel);
-            }
-
-            return interceptor;
-        } catch (IllegalArgumentException e) {
-            // Try again
-            return (PacketInterceptor) channel.pipeline().get(handlerName);
-        }
-    }
-
-    /**
-     * Retrieve the Netty channel associated with a player. This is cached.
-     *
-     * @param player - the player.
-     * @return The Netty channel.
-     */
-    public Channel getChannel(Player player) {
-        Channel channel = channelLookup.get(player.getName());
-
-        // Lookup channel again
-        if (channel == null) {
-            Object connection = getConnection.get(getPlayerHandle.invoke(player));
-            Object manager = getManager.get(connection);
-
-            channelLookup.put(player.getName(), channel = getChannel.get(manager));
-        }
-
-        return channel;
-    }
-
-    /**
-     * Uninject a specific player.
-     *
-     * @param player - the injected player.
-     */
-    public void uninjectPlayer(Player player) {
-        uninjectChannel(getChannel(player));
-        PacketEvents.getEventManager().callEvent(new PlayerUninjectEvent(player));
-    }
-
-    /**
-     * Uninject a specific channel.
-     * <p>
-     * This will also disable the automatic channel injection that occurs when a player has properly logged in.
-     *
-     * @param channel - the injected channel.
-     */
-    public void uninjectChannel(final Channel channel) {
-        // No need to guard against this if we're closing
-        if (!closed) {
-            uninjectedChannels.add(channel);
-        }
-
-        // See ChannelInjector in ProtocolLib, line 590
-        channel.eventLoop().execute(new Runnable() {
-
-            @Override
-            public void run() {
-                channel.pipeline().remove(handlerName);
-            }
-
-        });
-    }
-
-    /**
-     * Determine if the given player has been injected by TinyProtocol.
-     *
-     * @param player - the player.
-     * @return TRUE if it is, FALSE otherwise.
-     */
-    public boolean hasInjected(Player player) {
-        return hasInjected(getChannel(player));
-    }
-
-    /**
-     * Determine if the given channel has been injected by TinyProtocol.
-     *
-     * @param channel - the channel.
-     * @return TRUE if it is, FALSE otherwise.
-     */
-    public boolean hasInjected(Channel channel) {
-        return channel.pipeline().get(handlerName) != null;
-    }
-
-    /**
-     * Cease listening for packets. This is called automatically when your plugin is disabled.
-     */
-    public final void close() {
-        if (!closed) {
-            closed = true;
-
-            // Remove our handlers
-            for (Player player : plugin.getServer().getOnlinePlayers()) {
-                uninjectPlayer(player);
-            }
-
-            // Clean up Bukkit
-            HandlerList.unregisterAll(listener);
-            unregisterChannelHandler();
-        }
-    }
-
-    /**
-     * Channel handler that is inserted into the player's channel pipeline, allowing us to intercept sent and received packets.
-     *
-     * @author Kristian
-     */
-    private final class PacketInterceptor extends ChannelDuplexHandler {
-        // Updated by the login event
-        public volatile Player player;
-
-        @Override
-        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-            // Intercept channel
-            final Channel channel = ctx.channel();
-            handleLoginStart(channel, msg);
-
-            try {
-                msg = onPacketInAsync(player, channel, msg);
-            } catch (Exception e) {
-                plugin.getLogger().log(Level.SEVERE, "Error in onPacketInAsync().", e);
-            }
-
-            if (msg != null) {
-                super.channelRead(ctx, msg);
-            }
-        }
-
-        @Override
-        public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
-            try {
-                msg = onPacketOutAsync(player, ctx.channel(), msg);
-            } catch (Exception e) {
-                plugin.getLogger().log(Level.SEVERE, "Error in onPacketOutAsync().", e);
-            }
-
-            if (msg != null) {
-                super.write(ctx, msg, promise);
-            }
-        }
-
-        private void handleLoginStart(Channel channel, Object packet) {
-            if (PACKET_LOGIN_IN_START.isInstance(packet)) {
-                GameProfile profile = getGameProfile.get(packet);
-                channelLookup.put(profile.getName(), channel);
-            }
-        }
-    }
-}

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

@@ -1,550 +0,0 @@
-/*
- * This file is part of Hawk Anticheat.
- * Copyright (C) 2018 Hawk Development Team
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package io.github.retrooper.packetevents.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.event.impl.PlayerInjectEvent;
-import io.github.retrooper.packetevents.event.impl.PlayerUninjectEvent;
-import io.github.retrooper.packetevents.handler.TinyProtocolHandler_1_8;
-import io.github.retrooper.packetevents.tinyprotocol.Reflection.FieldAccessor;
-import io.netty.channel.*;
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.HandlerList;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerLoginEvent;
-import org.bukkit.event.server.PluginDisableEvent;
-import org.bukkit.plugin.Plugin;
-import org.bukkit.scheduler.BukkitRunnable;
-
-import java.lang.reflect.Field;
-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 abstract class TinyProtocol8 {
-    private static final AtomicInteger ID = new AtomicInteger(0);
-
-    // Used in order to lookup a channel
-    private static final Reflection.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);
-
-    // Packets we have to intercept
-    private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getMinecraftClass("PacketLoginInStart");
-    private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
-
-    // Speedup channel/protocol lookup
-    private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
-    private Listener listener;
-
-    // Channels that have already been removed
-    private final Set<Channel> uninjectedChannels = Collections.newSetFromMap(new MapMaker().weakKeys().<Channel, Boolean>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 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();
-
-        // Prepare existing players
-        registerBukkitEvents();
-
-        try {
-            registerChannelHandler();
-            registerPlayers(plugin);
-        } catch (IllegalArgumentException | NoSuchFieldException | IllegalAccessException ex) {
-            // Damn you, late bind
-            plugin.getLogger().info("[TinyProtocol] Delaying server channel injection due to late bind.");
-
-            new BukkitRunnable() {
-                @Override
-                public void run() {
-                    try {
-                        registerChannelHandler();
-                    } catch (NoSuchFieldException | IllegalAccessException e) {
-                        e.printStackTrace();
-                    }
-                    registerPlayers(plugin);
-                    plugin.getLogger().info("[TinyProtocol] Late bind injection successful.");
-                }
-            }.runTask(plugin);
-        }
-    }
-
-    private void createServerChannelHandler() {
-        // Handle connected channels
-        endInitProtocol = new ChannelInitializer<Channel>() {
-
-            @Override
-            protected void initChannel(Channel channel) throws Exception {
-                try {
-                    // This can take a while, so we need to stop the main thread from interfering
-                    synchronized (networkManagers) {
-                        // Stop injecting channels
-                        if (!closed) {
-                            channel.eventLoop().submit(() -> injectChannelInternal(channel));
-                        }
-                    }
-                } catch (Exception e) {
-                    plugin.getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
-                }
-            }
-
-        };
-
-        // This is executed before Minecraft's channel handler
-        beginInitProtocol = new ChannelInitializer<Channel>() {
-
-            @Override
-            protected void initChannel(Channel channel) throws Exception {
-                channel.pipeline().addLast(endInitProtocol);
-            }
-
-        };
-
-        serverChannelHandler = new ChannelInboundHandlerAdapter() {
-
-            @Override
-            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-                Channel channel = (Channel) msg;
-
-                // Prepare to initialize ths channel
-                channel.pipeline().addFirst(beginInitProtocol);
-                ctx.fireChannelRead(msg);
-            }
-
-        };
-    }
-
-    /**
-     * Register bukkit events.
-     */
-    private void registerBukkitEvents() {
-        listener = new Listener() {
-
-            @EventHandler(priority = EventPriority.LOWEST)
-            public final void onPlayerLogin(PlayerLoginEvent e) {
-                if (closed)
-                    return;
-
-                Channel channel = getChannel(e.getPlayer());
-
-                // Don't inject players that have been explicitly uninjected
-                if (!uninjectedChannels.contains(channel)) {
-                    injectPlayer(e.getPlayer());
-                }
-            }
-
-            @EventHandler
-            public final void onPluginDisable(PluginDisableEvent e) {
-                if (e.getPlugin().equals(plugin)) {
-                    close();
-                }
-            }
-
-        };
-
-        plugin.getServer().getPluginManager().registerEvents(listener, plugin);
-    }
-
-    /**
-     * Function modified by Retrooper
-     *
-     * @throws NoSuchFieldException
-     * @throws IllegalAccessException
-     */
-    @SuppressWarnings("unchecked")
-    private void registerChannelHandler() throws NoSuchFieldException, IllegalAccessException {
-        Object mcServer = getMinecraftServer.get(Bukkit.getServer());
-        Object serverConnection = getServerConnection.get(mcServer);
-        boolean looking = true;
-
-        /*
-         * I am doing this so we can support 1.8->1.15.2, the previous method TinyProtocol used wasn't supported on some versions
-         * like 1.15.2
-         */
-        final Field networkManagersField = serverConnection.getClass().getDeclaredField(TinyProtocolHandler_1_8.getNetworkManagersFieldName());
-        networkManagersField.setAccessible(true);
-        networkManagers = (List<Object>) networkManagersField.get(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 packet;
-    }
-
-    /**
-     * Invoked when the server has received a packet from a given player.
-     * <p>
-     * Use {@link Channel#remoteAddress()} to get the remote address of the client.
-     *
-     * @param sender  - the player that sent the packet, NULL for early login/status packets.
-     * @param channel - channel that received the packet. Never NULL.
-     * @param packet  - the packet being received.
-     * @return The packet to recieve instead, or NULL to cancel.
-     */
-    public Object onPacketInAsync(Player sender, Channel channel, Object packet) {
-        return packet;
-    }
-
-    /**
-     * Send a packet to a particular player.
-     * <p>
-     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param player - the destination player.
-     * @param packet - the packet to send.
-     */
-    public void sendPacket(Player player, Object packet) {
-        sendPacket(getChannel(player), packet);
-    }
-
-    /**
-     * Send a packet to a particular client.
-     * <p>
-     * Note that {@link #onPacketOutAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param channel - client identified by a channel.
-     * @param packet  - the packet to send.
-     */
-    public void sendPacket(Channel channel, Object packet) {
-        channel.pipeline().writeAndFlush(packet);
-    }
-
-    /**
-     * Pretend that a given packet has been received from a player.
-     * <p>
-     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param player - the player that sent the packet.
-     * @param packet - the packet that will be received by the server.
-     */
-    public void receivePacket(Player player, Object packet) {
-        receivePacket(getChannel(player), packet);
-    }
-
-    /**
-     * Pretend that a given packet has been received from a given client.
-     * <p>
-     * Note that {@link #onPacketInAsync(Player, Channel, Object)} will be invoked with this packet.
-     *
-     * @param channel - client identified by a channel.
-     * @param packet  - the packet that will be received by the server.
-     */
-    public void receivePacket(Channel channel, Object packet) {
-        channel.pipeline().context("encoder").fireChannelRead(packet);
-    }
-
-
-    /**
-     * Changed from "tiny-" to "packetevents"
-     *
-     * @return handlerName
-     */
-    protected String getHandlerName() {
-        return "packetevents-" + plugin.getName() + "-" + ID.incrementAndGet();
-    }
-
-    /**
-     * Add a custom channel handler to the given player's channel pipeline, allowing us to intercept sent and received packets.
-     * <p>
-     * This will automatically be called when a player has logged in.
-     *
-     * @param player - the player to inject.
-     */
-    public void injectPlayer(Player player) {
-        final PlayerInjectEvent playerInjectEvent = new PlayerInjectEvent(player);
-        PacketEvents.getEventManager().callEvent(playerInjectEvent);
-        if (!playerInjectEvent.isCancelled()) {
-            injectChannelInternal(getChannel(player)).player = player;
-        }
-    }
-
-    /**
-     * Add a custom channel handler to the given channel.
-     *
-     * @param channel - the channel to inject.
-     * @return The intercepted channel, or NULL if it has already been injected.
-     */
-    public void injectChannel(Channel channel) {
-        injectChannelInternal(channel);
-    }
-
-    /**
-     * Add a custom channel handler to the given channel.
-     *
-     * @param channel - the channel to inject.
-     * @return The packet interceptor.
-     */
-    private PacketInterceptor injectChannelInternal(Channel channel) {
-        try {
-            PacketInterceptor interceptor = (PacketInterceptor) channel.pipeline().get(handlerName);
-
-            // Inject our packet interceptor
-            if (interceptor == null) {
-                interceptor = new PacketInterceptor();
-                channel.pipeline().addBefore("packet_handler", handlerName, interceptor);
-                uninjectedChannels.remove(channel);
-            }
-
-            return interceptor;
-        } catch (IllegalArgumentException e) {
-            // Try again
-            return (PacketInterceptor) channel.pipeline().get(handlerName);
-        }
-    }
-
-    /**
-     * Retrieve the Netty channel associated with a player. This is cached.
-     *
-     * @param player - the player.
-     * @return The Netty channel.
-     */
-    public Channel getChannel(Player player) {
-        Channel channel = channelLookup.get(player.getName());
-
-        // Lookup channel again
-        if (channel == null) {
-            Object connection = getConnection.get(getPlayerHandle.invoke(player));
-            Object manager = getManager.get(connection);
-
-            channelLookup.put(player.getName(), channel = getChannel.get(manager));
-        }
-
-        return channel;
-    }
-
-    /**
-     * Uninject a specific player.
-     *
-     * @param player - the injected player.
-     */
-    public void uninjectPlayer(Player player) {
-        uninjectChannel(getChannel(player));
-        PacketEvents.getEventManager().callEvent(new PlayerUninjectEvent(player));
-    }
-
-    /**
-     * Uninject a specific channel.
-     * <p>
-     * This will also disable the automatic channel injection that occurs when a player has properly logged in.
-     *
-     * @param channel - the injected channel.
-     */
-    public void uninjectChannel(final Channel channel) {
-        // No need to guard against this if we're closing
-        if (!closed) {
-            uninjectedChannels.add(channel);
-        }
-
-        // See ChannelInjector in ProtocolLib, line 590
-        channel.eventLoop().execute(new Runnable() {
-
-            @Override
-            public void run() {
-                channel.pipeline().remove(handlerName);
-            }
-
-        });
-    }
-
-    /**
-     * Determine if the given player has been injected by TinyProtocol.
-     *
-     * @param player - the player.
-     * @return TRUE if it is, FALSE otherwise.
-     */
-    public boolean hasInjected(Player player) {
-        return hasInjected(getChannel(player));
-    }
-
-    /**
-     * Determine if the given channel has been injected by TinyProtocol.
-     *
-     * @param channel - the channel.
-     * @return TRUE if it is, FALSE otherwise.
-     */
-    public boolean hasInjected(Channel channel) {
-        return channel.pipeline().get(handlerName) != null;
-    }
-
-    /**
-     * Cease listening for packets. This is called automatically when your plugin is disabled.
-     */
-    public final void close() {
-        if (!closed) {
-            closed = true;
-
-            // Remove our handlers
-            for (Player player : plugin.getServer().getOnlinePlayers()) {
-                uninjectPlayer(player);
-            }
-
-            // Clean up Bukkit
-            HandlerList.unregisterAll(listener);
-            unregisterChannelHandler();
-        }
-    }
-
-    /**
-     * Channel handler that is inserted into the player's channel pipeline, allowing us to intercept sent and received packets.
-     *
-     * @author Kristian
-     */
-    private final class PacketInterceptor extends ChannelDuplexHandler {
-        // Updated by the login event
-        public volatile Player player;
-
-        @Override
-        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-            // Intercept channel
-            final Channel channel = ctx.channel();
-            handleLoginStart(channel, msg);
-
-            try {
-                msg = onPacketInAsync(player, channel, msg);
-            } catch (Exception e) {
-                plugin.getLogger().log(Level.SEVERE, "Error in onPacketInAsync().", e);
-            }
-
-            if (msg != null) {
-                super.channelRead(ctx, msg);
-            }
-        }
-
-        @Override
-        public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
-            try {
-                msg = onPacketOutAsync(player, ctx.channel(), msg);
-            } catch (Exception e) {
-                plugin.getLogger().log(Level.SEVERE, "Error in onPacketOutAsync().", e);
-            }
-
-            if (msg != null) {
-                super.write(ctx, msg, promise);
-            }
-        }
-
-        private void handleLoginStart(Channel channel, Object packet) {
-            if (PACKET_LOGIN_IN_START.isInstance(packet)) {
-                GameProfile profile = getGameProfile.get(packet);
-                channelLookup.put(profile.getName(), channel);
-            }
-        }
-    }
-}

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

@@ -1,14 +1,15 @@
 package io.github.retrooper.packetevents.utils;
 
+import io.github.retrooper.packetevents.annotations.Nullable;
 import io.github.retrooper.packetevents.enums.ServerVersion;
 import io.github.retrooper.packetevents.packetwrappers.Sendable;
+import io.github.retrooper.packetevents.reflectionutils.Reflection;
 import io.github.retrooper.packetevents.utils.nms_entityfinder.EntityFinderUtils;
 import org.bukkit.World;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
-import io.github.retrooper.packetevents.annotations.Nullable;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -22,14 +23,18 @@ public final class NMSUtils {
     private static final String obcDir = ServerVersion.getOBCDirectory();
 
     public static Class<?> minecraftServerClass, craftWorldsClass,
-            packetClass, entityPlayerClass, playerConnectionClass, craftPlayerClass, serverConnectionClass, craftEntityClass, craftItemStack, nmsItemStackClass;
+            packetClass, entityPlayerClass, playerConnectionClass,
+            craftPlayerClass, serverConnectionClass, craftEntityClass,
+    craftItemStack, nmsItemStackClass, networkManagerClass, nettyChannelClass;
 
     private static Method getServerMethod, getCraftWorldHandleMethod, getServerConnection, getCraftPlayerHandle, getCraftEntityHandle, sendPacketMethod, asBukkitCopy;
 
     private static Field recentTPSField, entityPlayerPingField, playerConnectionField;
+    public static final Reflection.FieldAccessor<?> networkManagerFieldAccesssor, channelFieldAccessor;
 
     static {
         try {
+            nettyChannelClass = getNettyClass("channel.Channel");
             minecraftServerClass = getNMSClass("MinecraftServer");
             craftWorldsClass = getOBCClass("CraftWorld");
             craftPlayerClass = getOBCClass("entity.CraftPlayer");
@@ -40,6 +45,7 @@ public final class NMSUtils {
             craftEntityClass = getOBCClass("entity.CraftEntity");
             craftItemStack = getOBCClass("inventory.CraftItemStack");
             nmsItemStackClass = getNMSClass("ItemStack");
+            networkManagerClass = getNMSClass("NetworkManager");
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
         }
@@ -66,7 +72,8 @@ public final class NMSUtils {
             e.printStackTrace();
         }
 
-
+        networkManagerFieldAccesssor = Reflection.getField(playerConnectionClass, networkManagerClass, 0);
+        channelFieldAccessor = Reflection.getField(networkManagerClass, nettyChannelClass, 0);
     }
 
     public static Object getMinecraftServerInstance() throws InvocationTargetException, IllegalAccessException {
@@ -124,16 +131,32 @@ public final class NMSUtils {
     }
 
     public static Object getEntityPlayer(final Player player) {
-        final Object craftPlayer = getCraftPlayer(player);
         Object entityPlayer = null;
         try {
-            return getCraftPlayerHandle.invoke(craftPlayer);
+            return getCraftPlayerHandle.invoke(getCraftPlayer(player));
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
         return null;
     }
 
+    public static Object getPlayerConnection(final Player player) {
+        try {
+            return playerConnectionField.get( getEntityPlayer(player));
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static Object getNetworkManager(final Player player) {
+        return networkManagerFieldAccesssor.get(getPlayerConnection(player));
+    }
+
+    public static Object getChannel(final Player player) {
+        return channelFieldAccessor.get(getNetworkManager(player));
+    }
+
     public static int getPlayerPing(final Player player) {
         Object entityPlayer = getEntityPlayer(player);
         try {

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

@@ -13,58 +13,12 @@ import java.lang.reflect.Method;
 
 public final class EntityFinderUtils {
     @Nullable
-    private static ServerVersion version = PacketEvents.getServerVersion();
-
-
-    public static Entity getEntityById(final int id) {
-        for (final World world : Bukkit.getWorlds()) {
-            final Entity entity = getEntityByIdWithWorld(world, id);
-            if (entity != null) {
-                return entity;
-            }
-        }
-        return null;
-    }
-
-    @Nullable
-    public static Entity getEntityByIdWithWorld(final World world, final int id) {
-        if(world == null) {
-            return null;
-        }
-        Object craftWorld = craftWorldClass.cast(world);
-
-        Object worldServer = null;
-        try {
-            worldServer = craftWorldGetHandle.invoke(craftWorld);
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-
-        Object nmsEntity = null;
-        try {
-            nmsEntity = getEntityByIdMethod.invoke(worldServer, id);
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-        if(nmsEntity == null) {
-            return null;
-        }
-        try {
-            return (Entity) getBukkitEntity.invoke(nmsEntity);
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
-        return null;
-    }
-
-
+    private static final ServerVersion version = PacketEvents.getServerVersion();
     private static Class<?> worldServerClass;
     private static Class<?> craftWorldClass;
     private static Class<?> entityClass;
-
     private static Method getEntityByIdMethod;
     private static Method craftWorldGetHandle;
-
     private static Method getBukkitEntity;
 
     static {
@@ -85,6 +39,47 @@ public final class EntityFinderUtils {
         }
     }
 
+    public static Entity getEntityById(final int id) {
+        for (final World world : Bukkit.getWorlds()) {
+            final Entity entity = getEntityByIdWithWorld(world, id);
+            if (entity != null) {
+                return entity;
+            }
+        }
+        return null;
+    }
+
+    @Nullable
+    public static Entity getEntityByIdWithWorld(final World world, final int id) {
+        if (world == null) {
+            return null;
+        }
+        Object craftWorld = craftWorldClass.cast(world);
+
+        Object worldServer = null;
+        try {
+            worldServer = craftWorldGetHandle.invoke(craftWorld);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+
+        Object nmsEntity = null;
+        try {
+            nmsEntity = getEntityByIdMethod.invoke(worldServer, id);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        if (nmsEntity == null) {
+            return null;
+        }
+        try {
+            return (Entity) getBukkitEntity.invoke(nmsEntity);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
     public static String getEntityByNameMethodName() {
         if (version.isHigherThan(ServerVersion.v_1_7_10) && version.isLowerThan(ServerVersion.v_1_9)) {
             return "a";