1.7.6 release

1.7.6 release

README.md

@@ -1,14 +1,10 @@
 # packetevents 
 
-A Spigot packet API with some nice utlities.
+A spigot Packet API with some nice utlities.
 
 ## About
 
-This packetlistener is **only** supported on Spigot servers and has been tested to work on these Spigot forks: PaperMC, Tuinity
-
-* No dependencies
-
-* Licensed under the MIT license
+This API is **only** supported on Spigot servers and has been tested to work on these Spigot forks: Paper, Tuinity, Purpur
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 
@@ -16,5 +12,3 @@ Our discord server: https://discord.me/packetevents
 
 [![](https://jitpack.io/v/retrooper/packetevents.svg)](https://jitpack.io/#retrooper/packetevents)
 
-[![](https://jitci.com/gh/retrooper/packetevents/svg)](https://jitci.com/gh/retrooper/packetevents)
-

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>io.github.retrooper</groupId>
     <artifactId>packetevents</artifactId>
-    <version>1.7.3</version>
+    <version>1.7.6</version>
 
     <!-- You can build the project with this: "mvn clean compile assembly:single" -->
     <build>
@@ -122,21 +122,6 @@
             <version>4.5.0</version>
             <scope>provided</scope>
         </dependency>
-
-        <dependency>
-            <groupId>us.myles</groupId>
-            <artifactId>viaversion</artifactId>
-            <version>3.0.1</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.github.ProtocolSupport</groupId>
-            <artifactId>ProtocolSupport</artifactId>
-            <version>4fdd683</version>
-            <scope>provided</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>

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

@@ -26,8 +26,8 @@ package io.github.retrooper.packetevents;
 
 import io.github.retrooper.packetevents.bungee.BungeePluginMessageListener;
 import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.exceptions.PacketEventsLoadFailureException;
 import io.github.retrooper.packetevents.packetmanager.PacketManager;
-import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.settings.PacketEventsSettings;
@@ -37,10 +37,11 @@ import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.player.ClientVersion;
 import io.github.retrooper.packetevents.utils.server.PEVersion;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
+import io.github.retrooper.packetevents.utils.v_1_7_10.ProtocolVersionAccessor_v_1_7;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerLoginEvent;
@@ -48,6 +49,8 @@ import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.plugin.Plugin;
 
 import java.util.ArrayList;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 
 public final class PacketEvents implements Listener {
@@ -55,9 +58,15 @@ public final class PacketEvents implements Listener {
     private static final PacketEvents instance = new PacketEvents();
     private static final ArrayList<Plugin> plugins = new ArrayList<>(1);
     private static boolean loaded, initialized;
-    private static final PEVersion version = new PEVersion(1, 7, 3);
+    private static final PEVersion version = new PEVersion(1, 7, 6);
 
     private static PacketEventsSettings settings = new PacketEventsSettings();
+    /**
+     * General executor service, basically for anything that the packet executor service doesn't do.
+     */
+    public static ExecutorService generalExecutorService = Executors.newSingleThreadExecutor();
+    //Executor used for player injecting/ejecting and for packet processing/event calling
+    public static ExecutorService packetHandlingExecutorService = Executors.newSingleThreadExecutor();
 
     /**
      * This loads the PacketEvents API.
@@ -98,7 +107,7 @@ public final class PacketEvents implements Listener {
 
                 WrappedPacket.loadAllWrappers();
             } catch (Exception ex) {
-                throw new IllegalStateException("PacketEvents failed to successfully load...", ex);
+                throw new PacketEventsLoadFailureException();
             }
             loaded = true;
         }
@@ -128,6 +137,14 @@ public final class PacketEvents implements Listener {
         load();
         if (!initialized) {
             settings = packetEventsSettings;
+            int packetHandlingThreadCount = settings.getPacketHandlingThreadCount();
+            //if the count is 1 or is invalid
+            if(packetHandlingThreadCount == 1 || packetHandlingThreadCount < 0) {
+                packetHandlingExecutorService = Executors.newSingleThreadExecutor();
+            }
+            else {
+                packetHandlingExecutorService = Executors.newFixedThreadPool(packetHandlingThreadCount);
+            }
             plugins.add(pl);
 
             //Register Bukkit listener
@@ -139,12 +156,7 @@ public final class PacketEvents implements Listener {
             }
 
             if (settings.shouldCheckForUpdates()) {
-                Future<?> future = NettyPacketManager.executorService.submit(new Runnable() {
-                    @Override
-                    public void run() {
-                        new UpdateChecker().handleUpdate();
-                    }
-                });
+               PacketEvents.generalExecutorService.execute(() -> new UpdateChecker().handleUpdate());
             }
 
             if (getAPI().getServerUtils().isBungeeCordEnabled()) {
@@ -169,7 +181,8 @@ public final class PacketEvents implements Listener {
                 PacketEvents.getAPI().packetManager.tinyProtocol.unregisterChannelHandler();
             }
             getAPI().getEventManager().unregisterAllListeners();
-            NettyPacketManager.executorService.shutdownNow();
+            PacketEvents.generalExecutorService.shutdownNow();
+            PacketEvents.packetHandlingExecutorService.shutdownNow();
             initialized = false;
         }
     }
@@ -203,7 +216,7 @@ public final class PacketEvents implements Listener {
         return version;
     }
 
-    @EventHandler
+    @EventHandler(priority = EventPriority.LOW)
     public void onLogin(PlayerLoginEvent e) {
         if (PacketEvents.getSettings().shouldInjectEarly()) {
             assert getAPI().packetManager.tinyProtocol != null;
@@ -217,20 +230,14 @@ public final class PacketEvents implements Listener {
         }
     }
 
-    @EventHandler
+    @EventHandler(priority = EventPriority.LOW)
     public void onJoin(final PlayerJoinEvent e) {
-        if (!VersionLookupUtils.hasHandledLoadedDependencies()) {
-            VersionLookupUtils.handleLoadedDependencies();
+        if(PacketEvents.getAPI().getServerUtils().getVersion() == ServerVersion.v_1_7_10) {
+            Object channel = NMSUtils.getChannel(e.getPlayer());
+            ClientVersion version = ClientVersion.getClientVersion(ProtocolVersionAccessor_v_1_7.getProtocolVersion(e.getPlayer()));
+            PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.put(channel, version);
         }
-        Object channel = NMSUtils.getChannel(e.getPlayer());
         //Waiting for the BungeeCord server to send their plugin message with your version,
-        //So we leave bungee alone
-        if (!PacketEvents.getAPI().getServerUtils().isBungeeCordEnabled()) {
-            if (VersionLookupUtils.isDependencyAvailable()) {
-                ClientVersion version = ClientVersion.getClientVersion(VersionLookupUtils.getProtocolVersion(e.getPlayer()));
-                PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.put(channel, version);
-            }
-        }
         if (!PacketEvents.getSettings().shouldInjectEarly()) {
             if (getAPI().packetManager.canInject(e.getPlayer())) {
                 PacketEvents.getAPI().packetManager.injectPlayer(e.getPlayer());
@@ -239,7 +246,7 @@ public final class PacketEvents implements Listener {
     }
 
 
-    @EventHandler
+    @EventHandler(priority = EventPriority.HIGHEST)
     public void onQuit(final PlayerQuitEvent e) {
         PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.remove(e.getPlayer().getUniqueId());
     }

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

@@ -35,7 +35,7 @@ import org.bukkit.plugin.messaging.PluginMessageListener;
 import java.util.UUID;
 
 public class BungeePluginMessageListener implements PluginMessageListener {
-    public static String tagName = "packetevents";
+    public static String tagName = "packetevents:channel";
 
     @Override
     public void onPluginMessageReceived(String tag, Player player, byte[] bytes) {

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

@@ -25,15 +25,33 @@
 package io.github.retrooper.packetevents.enums;
 
 public enum Direction {
-    DOWN, UP, NORTH, SOUTH, WEST, EAST, NORTH_EAST,
-    NORTH_WEST, SOUTH_EAST,
-    SOUTH_WEST, WEST_NORTH_WEST,
-    NORTH_NORTH_WEST, NORTH_NORTH_EAST,
-    EAST_NORTH_EAST, EAST_SOUTH_EAST,
-    SOUTH_SOUTH_EAST, SOUTH_SOUTH_WEST,
-    WEST_SOUTH_WEST, SELF, NULL;
+    /**
+     * -Y offset
+     */
+    DOWN,
 
-    public static Direction get(final int i) {
-        return values()[i];
-    }
+    /**
+     * +Y offset
+     */
+    UP,
+
+    /**
+     * -Z offset
+     */
+    NORTH,
+
+    /**
+     * +Z offset
+     */
+    SOUTH,
+
+    /**
+     * -X offset
+     */
+    WEST,
+
+    /**
+     * +X offset
+     */
+    EAST;
 }

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

@@ -28,5 +28,6 @@ package io.github.retrooper.packetevents.event;
  * A Packet listener.
  * Implement this interface in your listeners.
  */
+@Deprecated
 public interface PacketListener {
 }

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

@@ -22,13 +22,44 @@
  * SOFTWARE.
  */
 
-package io.github.retrooper.packetevents.utils.protocolsupport;
+package io.github.retrooper.packetevents.event;
 
-import org.bukkit.entity.Player;
-import protocolsupport.api.ProtocolSupportAPI;
+import io.github.retrooper.packetevents.event.impl.*;
 
-class ProtocolSupportAPIAccessor {
-    public static int getProtocolVersion(final Player player) {
-        return ProtocolSupportAPI.getProtocolVersion(player).getId();
+public abstract class PacketListenerDynamic {
+    private final byte priority;
+    public PacketListenerDynamic(final byte priority) {
+        this.priority = priority;
+    }
+
+    public final byte getPriority() {
+        return priority;
+    }
+
+    public void onPacketStatus(PacketStatusEvent event) {
+    }
+
+    public void onPacketLogin(PacketLoginEvent event) {
+    }
+
+    public void onPacketReceive(PacketReceiveEvent event) {
+    }
+
+    public void onPacketSend(PacketSendEvent event) {
+    }
+
+    public void onPostPacketReceive(PostPacketReceiveEvent event) {
+    }
+
+    public void onPostPacketSend(PostPacketSendEvent event) {
+    }
+
+    public void onPlayerInject(PlayerInjectEvent event) {
+    }
+
+    public void onPlayerEject(PlayerEjectEvent event) {
+    }
+
+    public void onPacketEvent(PacketEvent event) {
     }
 }

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

@@ -26,14 +26,10 @@ package io.github.retrooper.packetevents.event.annotation;
 
 import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
 
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
+import java.lang.annotation.*;
 
-@Target(ElementType.METHOD)
+@Target({ElementType.METHOD})
 @Retention(RetentionPolicy.RUNTIME)
-
 public @interface PacketHandler {
     byte priority() default PacketEventPriority.NORMAL;
 }

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

@@ -24,98 +24,57 @@
 
 package io.github.retrooper.packetevents.event.manager;
 
-import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.event.PacketEvent;
 import io.github.retrooper.packetevents.event.PacketListener;
-import io.github.retrooper.packetevents.event.annotation.PacketHandler;
-import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
-import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
-import io.github.retrooper.packetevents.utils.protocollib.ProtocolLibAPIListener;
-import io.github.retrooper.packetevents.utils.protocollib.ProtocolLibUtils;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentLinkedQueue;
+import io.github.retrooper.packetevents.event.PacketListenerDynamic;
 
 public final class EventManager {
-    private final ConcurrentHashMap<PacketListener, ConcurrentLinkedQueue<Method>> registeredMethods = new ConcurrentHashMap<>();
+    private final EventManagerLegacy legacyEventManager = new EventManagerLegacy();
+    private final EventManagerDynamic dynamicEventManager = new EventManagerDynamic();
 
-    public void callEvent(final PacketEvent e) {
-        for (final PacketListener listener : registeredMethods.keySet()) {
-            ConcurrentLinkedQueue<Method> methods = registeredMethods.get(listener);
-            final boolean[] isCancelled = {false};
-            final byte[] eventPriority = {PacketEventPriority.LOWEST};
-            for (Method method : methods) {
-                Class<?> parameterType = method.getParameterTypes()[0];
-                if (parameterType.equals(PacketEvent.class)
-                        || parameterType.isInstance(e)) {
-
-                    PacketHandler annotation = method.getAnnotation(PacketHandler.class);
-                    try {
-                        method.invoke(listener, e);
-                    } catch (IllegalAccessException | InvocationTargetException ex) {
-                        ex.printStackTrace();
-                    }
-                    if (e instanceof CancellableEvent) {
-                        CancellableEvent ce = (CancellableEvent) e;
-                        if (annotation.priority() >= eventPriority[0]) {
-                            eventPriority[0] = annotation.priority();
-                            isCancelled[0] = ce.isCancelled();
-                        }
-                    }
-                    if (e instanceof CancellableEvent) {
-                        CancellableEvent cancellableEvent = (CancellableEvent) e;
-                        cancellableEvent.setCancelled(isCancelled[0]);
-                    }
-                }
-            }
-        }
+    public void callEvent(PacketEvent event) {
+        dynamicEventManager.callEvent(event);
+        legacyEventManager.callEvent(event);
     }
 
-    public void registerListener(final PacketListener listener) {
-        final ConcurrentLinkedQueue<Method> methods = new ConcurrentLinkedQueue<>();
-        for (final Method m : listener.getClass().getDeclaredMethods()) {
-            if (!m.isAccessible()) {
-                m.setAccessible(true);
-            }
-            if (m.isAnnotationPresent(PacketHandler.class)
-                    && m.getParameterTypes().length == 1) {
-                methods.add(m);
-            }
-        }
-
-        if (!methods.isEmpty()) {
-            if (ProtocolLibUtils.isAvailable()
-                    && PacketEvents.getSettings().shouldUseProtocolLibIfAvailable()) {
-                ProtocolLibAPIListener.registerProtocolLibListener(listener, methods);
-            } else {
-                registeredMethods.put(listener, methods);
-            }
-        }
+    @Deprecated
+    public void registerListener(PacketListener listener) {
+        legacyEventManager.registerListener(listener);
     }
 
-    public void registerListeners(final PacketListener... listeners) {
-        for (final PacketListener listener : listeners) {
-            registerListener(listener);
-        }
+    @Deprecated
+    public void registerListeners(PacketListener... listeners) {
+        legacyEventManager.registerListeners(listeners);
     }
 
-    public void unregisterListener(final PacketListener e) {
-        registeredMethods.remove(e);
+    @Deprecated
+    public void unregisterListener(PacketListener listener) {
+        legacyEventManager.unregisterListener(listener);
     }
 
-    public void unregisterListeners(final PacketListener... listeners) {
-        for (final PacketListener listener : listeners) {
-            unregisterListener(listener);
-        }
+    @Deprecated
+    public void unregisterListeners(PacketListener... listeners) {
+        legacyEventManager.unregisterListeners(listeners);
+    }
+
+    public void registerListener(PacketListenerDynamic listener) {
+        dynamicEventManager.registerListener(listener);
+    }
+
+    public void registerListeners(PacketListenerDynamic... listeners) {
+        dynamicEventManager.registerListeners(listeners);
+    }
+
+    public void unregisterListener(PacketListenerDynamic listener) {
+        dynamicEventManager.unregisterListener(listener);
+    }
+
+    public void unregisterListeners(PacketListenerDynamic... listeners) {
+        dynamicEventManager.unregisterListeners(listeners);
     }
 
     public void unregisterAllListeners() {
-        registeredMethods.clear();
-    }
-
-    public boolean isRegistered(final PacketListener listener) {
-        return registeredMethods.containsKey(listener);
+        dynamicEventManager.unregisterAllListeners();
+        legacyEventManager.unregisterAllListeners();
     }
 }

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

@@ -0,0 +1,120 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 retrooper
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package io.github.retrooper.packetevents.event.manager;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.PacketListenerDynamic;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.event.impl.*;
+import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
+import io.github.retrooper.packetevents.exceptions.PacketEventsMethodInvokeException;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+class EventManagerDynamic {
+    private final Map<Byte, List<PacketListenerDynamic>> map = new HashMap<>();
+
+    public void callEvent(PacketEvent event) {
+        boolean isCancelled = false;
+        for (byte i = PacketEventPriority.LOWEST; i <= PacketEventPriority.MONITOR; i++) {
+            if (map.get(i) != null) {
+                for (PacketListenerDynamic listener : map.get(i)) {
+                    try {
+                        listener.onPacketEvent(event);
+                        if (event instanceof PacketStatusEvent) {
+                            listener.onPacketStatus((PacketStatusEvent) event);
+                        } else if (event instanceof PacketLoginEvent) {
+                            listener.onPacketLogin((PacketLoginEvent) event);
+                        } else if (event instanceof PacketReceiveEvent) {
+                            listener.onPacketReceive((PacketReceiveEvent) event);
+                        } else if (event instanceof PacketSendEvent) {
+                            listener.onPacketSend((PacketSendEvent) event);
+                        } else if (event instanceof PostPacketReceiveEvent) {
+                            listener.onPostPacketReceive((PostPacketReceiveEvent) event);
+                        } else if (event instanceof PostPacketSendEvent) {
+                            listener.onPostPacketSend((PostPacketSendEvent) event);
+                        } else if (event instanceof PlayerInjectEvent) {
+                            listener.onPlayerInject((PlayerInjectEvent) event);
+                        } else if (event instanceof PlayerEjectEvent) {
+                            listener.onPlayerEject((PlayerEjectEvent) event);
+                        }
+
+                    } catch (Exception ex) {
+                        throw new PacketEventsMethodInvokeException("PacketEvents " +
+                                "failed to call an event method in the " +
+                                "dynamic packet listener. Event type: "
+                                + ClassUtil.getClassSimpleName(event.getClass()));
+                    }
+
+                    if (event instanceof CancellableEvent) {
+                        CancellableEvent ce = (CancellableEvent) event;
+                        isCancelled = ce.isCancelled();
+                    }
+                }
+            }
+        }
+        if (event instanceof CancellableEvent) {
+            CancellableEvent ce = (CancellableEvent) event;
+            ce.setCancelled(isCancelled);
+        }
+    }
+
+    public void registerListener(PacketListenerDynamic listener) {
+            List<PacketListenerDynamic> listeners = map.get(listener.getPriority());
+            if (listeners == null) {
+                map.put(listener.getPriority(), new ArrayList<>());
+                listeners = map.get(listener.getPriority());
+            }
+            listeners.add(listener);
+    }
+
+    public void registerListeners(PacketListenerDynamic... listeners) {
+        for (PacketListenerDynamic listener : listeners) {
+            registerListener(listener);
+        }
+    }
+
+    public void unregisterListener(PacketListenerDynamic listener) {
+        List<PacketListenerDynamic> listeners = map.get(listener.getPriority());
+        if (listeners == null) {
+            return;
+        }
+        listeners.remove(listener);
+    }
+
+    public void unregisterListeners(PacketListenerDynamic... listeners) {
+        for (PacketListenerDynamic listener : listeners) {
+            unregisterListener(listener);
+        }
+    }
+
+    public void unregisterAllListeners() {
+        map.clear();
+    }
+}

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

@@ -0,0 +1,112 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 retrooper
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package io.github.retrooper.packetevents.event.manager;
+
+import io.github.retrooper.packetevents.event.PacketEvent;
+import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.event.annotation.PacketHandler;
+import io.github.retrooper.packetevents.event.eventtypes.CancellableEvent;
+import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+class EventManagerLegacy {
+    private final Map<PacketListener, List<Method>> staticRegisteredMethods = new HashMap<>();
+    public void callEvent(final PacketEvent e) {
+        boolean isCancelled = false;
+        byte eventPriority = PacketEventPriority.LOWEST;
+        //STATIC LISTENERS
+        for (final PacketListener listener : staticRegisteredMethods.keySet()) {
+            List<Method> methods = staticRegisteredMethods.get(listener);
+
+            for (Method method : methods) {
+                Class<?> parameterType = method.getParameterTypes()[0];
+                if (parameterType.equals(PacketEvent.class)
+                        || parameterType.isInstance(e)) {
+
+                    PacketHandler annotation = method.getAnnotation(PacketHandler.class);
+                    try {
+                        method.invoke(listener, e);
+                    } catch (IllegalAccessException | InvocationTargetException ex) {
+                        ex.printStackTrace();
+                    }
+                    if (e instanceof CancellableEvent) {
+                        CancellableEvent ce = (CancellableEvent) e;
+                        if (annotation.priority() >= eventPriority) {
+                            eventPriority = annotation.priority();
+                            isCancelled = ce.isCancelled();
+                        }
+                    }
+                }
+            }
+        }
+        if(e instanceof CancellableEvent) {
+            CancellableEvent ce = (CancellableEvent)e;
+            ce.setCancelled(isCancelled);
+        }
+    }
+
+    public void registerListener(final PacketListener listener) {
+        final List<Method> methods = new ArrayList<>();
+        for (final Method m : listener.getClass().getDeclaredMethods()) {
+            if (!m.isAccessible()) {
+                m.setAccessible(true);
+            }
+            if (m.isAnnotationPresent(PacketHandler.class)
+                    && m.getParameterTypes().length == 1) {
+                methods.add(m);
+            }
+        }
+
+        if (!methods.isEmpty()) {
+            staticRegisteredMethods.put(listener, methods);
+        }
+    }
+
+    public void registerListeners(final PacketListener... listeners) {
+        for (final PacketListener listener : listeners) {
+            registerListener(listener);
+        }
+    }
+
+    public void unregisterListener(final PacketListener e) {
+        staticRegisteredMethods.remove(e);
+    }
+
+    public void unregisterListeners(final PacketListener... listeners) {
+        for (final PacketListener listener : listeners) {
+            unregisterListener(listener);
+        }
+    }
+
+    public void unregisterAllListeners() {
+        staticRegisteredMethods.clear();
+    }
+}

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

@@ -25,16 +25,10 @@
 package io.github.retrooper.packetevents.example;
 
 import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.PacketListener;
-import io.github.retrooper.packetevents.event.annotation.PacketHandler;
-import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
-import io.github.retrooper.packetevents.packettype.PacketType;
-import io.github.retrooper.packetevents.packetwrappers.in.chat.WrappedPacketInChat;
-import io.github.retrooper.packetevents.utils.player.ClientVersion;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
 import org.bukkit.plugin.java.JavaPlugin;
 
-public class MainExample extends JavaPlugin implements PacketListener {
+public class MainExample extends JavaPlugin {
 
     @Override
     public void onLoad() {
@@ -44,9 +38,13 @@ public class MainExample extends JavaPlugin implements PacketListener {
     @Override
     public void onEnable() {
         PacketEvents.getSettings().injectAsync(true).ejectAsync(true)
-                .backupServerVersion(ServerVersion.v_1_7_10).
-                useProtocolLibIfAvailable(true).checkForUpdates(true).injectEarly(true);
-        PacketEvents.getAPI().getEventManager().registerListener(this);
+                .backupServerVersion(ServerVersion.v_1_7_10).checkForUpdates(true).injectEarly(true).
+                packetHandlingThreadCount(1);
         PacketEvents.init(this);
     }
+
+    @Override
+    public void onDisable() {
+        PacketEvents.stop();
+    }
 }

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

@@ -22,12 +22,14 @@
  * SOFTWARE.
  */
 
-package io.github.retrooper.packetevents.utils.protocollib;
+package io.github.retrooper.packetevents.exceptions;
 
-import org.bukkit.Bukkit;
+public class PacketEventsLoadFailureException extends RuntimeException {
+    public PacketEventsLoadFailureException(String message) {
+        super(message);
+    }
 
-public class ProtocolLibUtils {
-    public static boolean isAvailable() {
-        return Bukkit.getPluginManager().isPluginEnabled("ProtocolLib");
+    public PacketEventsLoadFailureException() {
+        this("PacketEvents failed to successfully load...");
     }
 }

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

@@ -22,17 +22,20 @@
  * SOFTWARE.
  */
 
-package io.github.retrooper.packetevents.utils.protocolsupport;
+package io.github.retrooper.packetevents.exceptions;
 
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
+import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
 
-public class ProtocolSupportUtils {
-    public static boolean isAvailable() {
-        return Bukkit.getPluginManager().isPluginEnabled("ProtocolSupport");
+import java.lang.reflect.Method;
+
+public class PacketEventsMethodAccessException extends RuntimeException {
+    public PacketEventsMethodAccessException(String message) {
+        super(message);
     }
 
-    public static int getProtocolVersion(final Player player) {
-        return ProtocolSupportAPIAccessor.getProtocolVersion(player);
+    public PacketEventsMethodAccessException(Method method, PacketListener listener) {
+        this("PacketEvents failed to access the "
+                + method.getName() + " method in " + ClassUtil.getClassSimpleName(listener.getClass()));
     }
 }

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

@@ -22,18 +22,20 @@
  * SOFTWARE.
  */
 
-package io.github.retrooper.packetevents.utils.viaversion;
+package io.github.retrooper.packetevents.exceptions;
 
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
+import io.github.retrooper.packetevents.event.PacketListener;
+import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
 
+import java.lang.reflect.Method;
 
-public class ViaUtils {
-    public static int getProtocolVersion(final Player player) {
-        return ViaAPIAccessor.getProtocolVersion(player);
+public class PacketEventsMethodInvokeException extends RuntimeException {
+    public PacketEventsMethodInvokeException(String message) {
+        super(message);
     }
 
-    public static boolean isAvailable() {
-        return Bukkit.getPluginManager().isPluginEnabled("ViaVersion");
+    public PacketEventsMethodInvokeException(Method method, PacketListener listener) {
+        this("PacketEvents failed to call the " + method.getName() + " method in "
+                + ClassUtil.getClassSimpleName(listener.getClass()));
     }
 }

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

@@ -22,19 +22,14 @@
  * SOFTWARE.
  */
 
-package io.github.retrooper.packetevents.utils.viaversion;
+package io.github.retrooper.packetevents.exceptions;
 
-import org.bukkit.entity.Player;
-import us.myles.ViaVersion.api.Via;
-
-import java.util.UUID;
-
-class ViaAPIAccessor {
-    public static int getProtocolVersion(final Player player) {
-        return getProtocolVersion(player.getUniqueId());
+public class PacketEventsNMSCachedEntityNotFoundException extends RuntimeException {
+    public PacketEventsNMSCachedEntityNotFoundException(String message) {
+        super(message);
     }
 
-    public static int getProtocolVersion(final UUID uuid) {
-        return Via.getAPI().getPlayerVersion(uuid);
+    public PacketEventsNMSCachedEntityNotFoundException(int entityID) {
+        this("PacketEvents failed to find an entity with ID " + entityID + " in NMS' entity cache map!");
     }
 }

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

@@ -30,27 +30,25 @@ import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
 import io.github.retrooper.packetevents.packetmanager.tinyprotocol.TinyProtocol;
 import io.github.retrooper.packetevents.packettype.PacketType;
 import io.github.retrooper.packetevents.packetwrappers.login.in.WrappedPacketLoginHandshake;
-import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.player.ClientVersion;
 import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
-import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
 
 import java.util.HashMap;
 import java.util.UUID;
-import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.atomic.AtomicInteger;
 
 public class PacketManager {
-    private static AtomicInteger handlerID = new AtomicInteger(0);
-    private int handlerNumber = handlerID.getAndIncrement();
+
+    private static final AtomicInteger handlerID = new AtomicInteger();
+    private final int handlerNumber = handlerID.getAndIncrement();
     private final Plugin plugin;
     private final boolean tinyProtocolMode;
     public final TinyProtocol tinyProtocol;
     public final NettyPacketManager nettyProtocol;
     private final HashMap<UUID, Long> keepAliveMap = new HashMap<>();
-    public final ConcurrentLinkedQueue<Object> queuedEjectionChannels = new ConcurrentLinkedQueue<>();
 
     public PacketManager(Plugin plugin, boolean tinyProtocolMode) {
         this.plugin = plugin;
@@ -72,10 +70,6 @@ public class PacketManager {
         }
     }
 
-    public void schedulePlayerEjection(Player player) {
-        queuedEjectionChannels.add(NMSUtils.getChannel(player));
-    }
-
     public void ejectPlayer(Player player) {
         if (PacketEvents.getSettings().shouldEjectAsync()) {
             ejectPlayerAsync(player);
@@ -135,28 +129,25 @@ public class PacketManager {
     }
 
     public void ejectChannel(Object channel) {
-        if(!PacketEvents.getSettings().shouldEjectAsync()) {
-           ejectChannelSync(channel);
-        }
-        else {
+        if (!PacketEvents.getSettings().shouldEjectAsync()) {
+            ejectChannelSync(channel);
+        } else {
             ejectChannelAsync(channel);
         }
     }
 
     public void ejectChannelSync(Object channel) {
-        if(tinyProtocolMode) {
+        if (tinyProtocolMode) {
             tinyProtocol.ejectChannelSync(channel);
-        }
-        else {
+        } else {
             nettyProtocol.ejectChannelSync(channel);
         }
     }
 
     public void ejectChannelAsync(Object channel) {
-        if(tinyProtocolMode) {
+        if (tinyProtocolMode) {
             tinyProtocol.ejectChannelAsync(channel);
-        }
-        else {
+        } else {
             nettyProtocol.ejectChannelAsync(channel);
         }
     }
@@ -170,11 +161,7 @@ public class PacketManager {
     }
 
     public boolean canInject(Player player) {
-        Object channel = NMSUtils.getChannel(player);
-        if(channel == null) {
-            return true;
-        }
-        return !queuedEjectionChannels.contains(channel);
+       return true;
     }
 
     public String getNettyHandlerName() {
@@ -182,70 +169,65 @@ public class PacketManager {
     }
 
     public Object read(Player player, Object channel, Object packet) {
-        switch (ClassUtil.getClassSimpleName(packet.getClass())) {
-            case "PacketHandshakingInSetProtocol":
-            case "PacketLoginInCustomPayload":
-            case "PacketLoginInStart":
-            case "PacketLoginInEncryptionBegin":
-                final PacketLoginEvent packetLoginEvent = new PacketLoginEvent(channel, packet);
-                PacketEvents.getAPI().getEventManager().callEvent(packetLoginEvent);
-                interceptLogin(packetLoginEvent);
-                if (packetLoginEvent.isCancelled()) {
-                    packet = null;
-                }
-                break;
-            case "PacketStatusInPing":
+        if (player == null) {
+            String simpleClassName = ClassUtil.getClassSimpleName(packet.getClass());
+            //Status packet
+            if (simpleClassName.startsWith("PacketS")) {
                 final PacketStatusEvent packetStatusEvent = new PacketStatusEvent(channel, packet);
                 PacketEvents.getAPI().getEventManager().callEvent(packetStatusEvent);
                 interceptStatus(packetStatusEvent);
                 if (packetStatusEvent.isCancelled()) {
                     packet = null;
                 }
-                break;
-            default:
-                final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(player, packet);
-                PacketEvents.getAPI().getEventManager().callEvent(packetReceiveEvent);
-                interceptRead(packetReceiveEvent);
-                if (packetReceiveEvent.isCancelled()) {
+            } else {
+                //Login packet
+                final PacketLoginEvent packetLoginEvent = new PacketLoginEvent(channel, packet);
+                PacketEvents.getAPI().getEventManager().callEvent(packetLoginEvent);
+                interceptLogin(packetLoginEvent);
+                if (packetLoginEvent.isCancelled()) {
                     packet = null;
                 }
-                break;
+            }
+        } else {
+            final PacketReceiveEvent packetReceiveEvent = new PacketReceiveEvent(player, packet);
+            PacketEvents.getAPI().getEventManager().callEvent(packetReceiveEvent);
+            interceptRead(packetReceiveEvent);
+            if (packetReceiveEvent.isCancelled()) {
+                packet = null;
+            }
         }
         return packet;
     }
 
     public Object write(Player player, Object channel, Object packet) {
-        switch (ClassUtil.getClassSimpleName(packet.getClass())) {
-            case "PacketLoginOutDisconnect":
-            case "PacketLoginOutEncryptionBegin":
-            case "PacketLoginOutSetCompression":
-            case "PacketLoginOutSuccess":
-                final PacketLoginEvent packetLoginEvent = new PacketLoginEvent(channel, packet);
-                PacketEvents.getAPI().getEventManager().callEvent(packetLoginEvent);
-                interceptLogin(packetLoginEvent);
-                if (packetLoginEvent.isCancelled()) {
-                    packet = null;
-                }
-                break;
-            case "PacketStatusOutPong":
-            case "PacketStatusOutServerInfo":
+        if (player == null) {
+            String simpleClassName = ClassUtil.getClassSimpleName(packet.getClass());
+            //Status packet
+            if (simpleClassName.startsWith("PacketS")) {
                 final PacketStatusEvent packetStatusEvent = new PacketStatusEvent(channel, packet);
                 PacketEvents.getAPI().getEventManager().callEvent(packetStatusEvent);
                 interceptStatus(packetStatusEvent);
                 if (packetStatusEvent.isCancelled()) {
                     packet = null;
                 }
-                break;
-            default:
-                final PacketSendEvent packetSendEvent = new PacketSendEvent(player, packet);
-                PacketEvents.getAPI().getEventManager().callEvent(packetSendEvent);
-                interceptWrite(packetSendEvent);
-                if (packetSendEvent.isCancelled()) {
+            }
+            //Login packet
+            else {
+                final PacketLoginEvent packetLoginEvent = new PacketLoginEvent(channel, packet);
+                PacketEvents.getAPI().getEventManager().callEvent(packetLoginEvent);
+                interceptLogin(packetLoginEvent);
+                if (packetLoginEvent.isCancelled()) {
                     packet = null;
                 }
-                break;
+            }
+        } else {
+            final PacketSendEvent packetSendEvent = new PacketSendEvent(player, packet);
+            PacketEvents.getAPI().getEventManager().callEvent(packetSendEvent);
+            interceptWrite(packetSendEvent);
+            if (packetSendEvent.isCancelled()) {
+                packet = null;
+            }
         }
-
         return packet;
     }
 
@@ -285,7 +267,7 @@ public class PacketManager {
             long timestamp = keepAliveMap.getOrDefault(uuid, event.getTimestamp());
             long currentTime = event.getTimestamp();
             long ping = currentTime - timestamp;
-            long smoothedPing = ((PacketEvents.getAPI().getPlayerUtils().getSmoothedPing(event.getPlayer()) * 3) + ping) / 4;
+            long smoothedPing = (PacketEvents.getAPI().getPlayerUtils().getSmoothedPing(event.getPlayer()) * 3 + ping) / 4;
             PacketEvents.getAPI().getPlayerUtils().playerPingMap.put(uuid, (short) ping);
             PacketEvents.getAPI().getPlayerUtils().playerSmoothedPingMap.put(uuid, (short) smoothedPing);
         }
@@ -298,13 +280,12 @@ public class PacketManager {
     }
 
     private void interceptLogin(PacketLoginEvent event) {
-        if (event.getPacketId() == PacketType.Login.HANDSHAKE) {
-            if (!VersionLookupUtils.isDependencyAvailable()) {
+        if (event.getPacketId() == PacketType.Login.HANDSHAKE &&
+        PacketEvents.getAPI().getServerUtils().getVersion() != ServerVersion.v_1_7_10) {
                 WrappedPacketLoginHandshake handshake = new WrappedPacketLoginHandshake(event.getNMSPacket());
                 int protocolVersion = handshake.getProtocolVersion();
                 ClientVersion version = ClientVersion.getClientVersion(protocolVersion);
                 PacketEvents.getAPI().getPlayerUtils().clientVersionsMap.put(event.getChannel(), version);
-            }
         }
     }
 

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

@@ -24,6 +24,7 @@
 
 package io.github.retrooper.packetevents.packetmanager.netty;
 
+import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;
@@ -33,9 +34,6 @@ import java.util.concurrent.Executors;
 
 public class NettyPacketManager {
     public static final boolean v1_7_nettyMode;
-    public static final ExecutorService
-            executorService =
-            Executors.newFixedThreadPool(Math.max(Runtime.getRuntime().availableProcessors(), 64));
 
     static {
         boolean v1_7_nettyMode1;
@@ -48,11 +46,9 @@ public class NettyPacketManager {
         v1_7_nettyMode = v1_7_nettyMode1;
     }
 
-    private Plugin plugin;
-    private Object npm;
+    private final Object npm;
 
     public NettyPacketManager(Plugin plugin) {
-        this.plugin = plugin;
         if (v1_7_nettyMode) {
             npm = new NettyPacketManager_7();
         } else {
@@ -83,7 +79,7 @@ public class NettyPacketManager {
     public void injectPlayerAsync(final Player player) {
         //Redundant channel variable created just so we can cache it synchronously.
         Object channel = NMSUtils.getChannel(player);
-        executorService.execute(() -> {
+        PacketEvents.packetHandlingExecutorService.execute(() -> {
             if (v1_7_nettyMode) {
                 NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
                 npm_7.injectPlayer(player);
@@ -115,7 +111,7 @@ public class NettyPacketManager {
      * @param player
      */
     public void ejectPlayerAsync(final Player player) {
-        executorService.execute(() -> {
+        PacketEvents.packetHandlingExecutorService.execute(() -> {
             if (v1_7_nettyMode) {
                 NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
                 npm_7.ejectPlayer(player);
@@ -137,7 +133,7 @@ public class NettyPacketManager {
     }
 
     public void ejectChannelAsync(Object channel) {
-        executorService.execute(() -> {
+        PacketEvents.packetHandlingExecutorService.execute(() -> {
             if (v1_7_nettyMode) {
                 NettyPacketManager_7 npm_7 = (NettyPacketManager_7) npm;
                 npm_7.ejectChannel(channel);

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

@@ -68,18 +68,18 @@ final class NettyPacketManager_7 {
     }
 
     public void ejectPlayer(Player player) {
-        Channel channel = (Channel)NMSUtils.getChannel(player);
+        Channel channel = (Channel) NMSUtils.getChannel(player);
         assert channel != null;
         ejectChannel(channel);
     }
 
    public void ejectChannel(Object ch) {
-        Channel channel = (Channel)ch;
+        Channel channel = (Channel) ch;
         channel.pipeline().remove(PacketEvents.getAPI().packetManager.getNettyHandlerName());
    }
 
     public void sendPacket(Object rawChannel, Object packet) {
-        Channel channel = (Channel)rawChannel;
+        Channel channel = (Channel) rawChannel;
         channel.pipeline().writeAndFlush(packet);
     }
 }

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

@@ -24,7 +24,6 @@
 
 package io.github.retrooper.packetevents.packetmanager.tinyprotocol;
 
-import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.Plugin;

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

@@ -1,24 +1,6 @@
-/*
- * 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.packetmanager.tinyprotocol;
 
 import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
 import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.FieldAccessor;
 import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.MethodInvoker;
 import net.minecraft.util.com.google.common.collect.Lists;
@@ -27,12 +9,12 @@ import net.minecraft.util.com.mojang.authlib.GameProfile;
 import net.minecraft.util.io.netty.channel.*;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
-import org.bukkit.event.HandlerList;
-import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.scheduler.BukkitRunnable;
 
-import java.util.*;
+import java.util.List;
+import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Level;
 
@@ -68,20 +50,19 @@ public class TinyProtocol7 {
     private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
 
     // Speedup channel/protocol lookup
-    private Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
-    private Listener listener;
+    private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
 
     // List of network markers
     private List<Object> networkManagers;
 
     // Injected channel handlers
-    private List<Channel> serverChannels = Lists.newArrayList();
+    private final List<Channel> serverChannels = Lists.newArrayList();
     private ChannelInboundHandlerAdapter serverChannelHandler;
     private ChannelInitializer<Channel> beginInitProtocol;
     private ChannelInitializer<Channel> endInitProtocol;
 
     // Current handler name
-    private String handlerName;
+    private final String handlerName;
 
     protected volatile boolean closed;
     protected Plugin plugin;
@@ -371,7 +352,7 @@ public class TinyProtocol7 {
             if (interceptor == null) {
                 interceptor = new PacketInterceptor();
                 final PacketInterceptor pi = interceptor;
-                NettyPacketManager.executorService.execute(new Runnable() {
+                PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
                     @Override
                     public void run() {
                         channel.pipeline().addBefore("packet_handler", handlerName, pi);
@@ -421,11 +402,11 @@ public class TinyProtocol7 {
     }
 
     public void ejectChannelSync(Object ch) {
-        uninjectChannel((Channel)ch);
+        uninjectChannel((Channel) ch);
     }
 
     public void ejectChannelAsync(Object ch) {
-        uninjectChannelAsync((Channel)ch);
+        uninjectChannelAsync((Channel) ch);
     }
 
     /**
@@ -442,7 +423,7 @@ public class TinyProtocol7 {
 
     public void uninjectChannelAsync(Channel channel) {
         // See ChannelInjector in ProtocolLib, line 590
-        NettyPacketManager.executorService.execute(new Runnable() {
+        PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
             @Override
             public void run() {
                 channel.pipeline().remove(handlerName);
@@ -489,11 +470,7 @@ public class TinyProtocol7 {
             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);
-            }
+            msg = onPacketInAsync(player, channel, msg);
 
             if (msg != null) {
                 super.channelRead(ctx, msg);
@@ -503,12 +480,7 @@ public class TinyProtocol7 {
 
         @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);
-            }
-
+            msg = onPacketOutAsync(player, ctx.channel(), msg);
             if (msg != null) {
                 super.write(ctx, msg, promise);
                 PacketEvents.getAPI().packetManager.postWrite(player, msg);

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

@@ -1,39 +1,21 @@
-/*
- * 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.packetmanager.tinyprotocol;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.MapMaker;
 import com.mojang.authlib.GameProfile;
 import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
 import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.FieldAccessor;
 import io.github.retrooper.packetevents.packetmanager.tinyprotocol.Reflection.MethodInvoker;
 import io.netty.channel.*;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
-import org.bukkit.event.HandlerList;
-import org.bukkit.event.Listener;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.scheduler.BukkitRunnable;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Level;
 
@@ -61,30 +43,36 @@ public class TinyProtocol8 {
     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);
+    private static final MethodInvoker getNetworkMarkers;
 
     // Packets we have to intercept
     private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getMinecraftClass("PacketLoginInStart");
-    private static final Class<?> PACKET_HANDSHAKING_IN_SET_PROTOCOL = Reflection.getMinecraftClass("PacketHandshakingInSetProtocol");
     private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
-    private static final FieldAccessor<Integer> protocolId = Reflection.getField(PACKET_HANDSHAKING_IN_SET_PROTOCOL, int.class, 0);
-    private static final FieldAccessor<Enum> protocolType = Reflection.getField(PACKET_HANDSHAKING_IN_SET_PROTOCOL, Enum.class, 0);
+
+    static {
+        MethodInvoker tempNetworkMarkers;
+        try {
+            tempNetworkMarkers = Reflection.getTypedMethod(serverConnectionClass, null, List.class, serverConnectionClass);
+        } catch (Exception ex) {
+            tempNetworkMarkers = null;
+        }
+        getNetworkMarkers = tempNetworkMarkers;
+    }
 
     // Speedup channel/protocol lookup
-    private Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
-    private Listener listener;
+    private final Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
 
     // List of network markers
     private List<Object> networkManagers;
 
     // Injected channel handlers
-    private List<Channel> serverChannels = Lists.newArrayList();
+    private final List<Channel> serverChannels = Lists.newArrayList();
     private ChannelInboundHandlerAdapter serverChannelHandler;
     private ChannelInitializer<Channel> beginInitProtocol;
     private ChannelInitializer<Channel> endInitProtocol;
 
     // Current handler name
-    private String handlerName;
+    private final String handlerName;
 
     protected volatile boolean closed;
     protected Plugin plugin;
@@ -135,7 +123,7 @@ public class TinyProtocol8 {
                         }
                     }
                 } catch (Exception e) {
-                    plugin.getLogger().log(Level.SEVERE, "Cannot inject incomming channel " + channel, e);
+                    plugin.getLogger().log(Level.SEVERE, "Cannot inject incoming channel " + channel, e);
                 }
             }
 
@@ -176,7 +164,11 @@ public class TinyProtocol8 {
         boolean looking = true;
 
         // We need to synchronize against this list
-        networkManagers = (List<Object>) getNetworkMarkers.invoke(null, serverConnection);
+        if (getNetworkMarkers != null) {
+            networkManagers = (List<Object>) getNetworkMarkers.invoke(null, serverConnection);
+        } else {
+            networkManagers = new ArrayList<>();
+        }
         createServerChannelHandler();
 
         // Find the correct list, or implicitly throw an exception
@@ -377,7 +369,7 @@ public class TinyProtocol8 {
             if (interceptor == null) {
                 interceptor = new PacketInterceptor();
                 final PacketInterceptor pi = interceptor;
-                NettyPacketManager.executorService.execute(new Runnable() {
+                PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
                     @Override
                     public void run() {
                         channel.pipeline().addBefore("packet_handler", handlerName, pi);
@@ -427,12 +419,13 @@ public class TinyProtocol8 {
     }
 
     public void ejectChannelSync(Object ch) {
-        uninjectChannel((Channel)ch);
+        uninjectChannel((Channel) ch);
     }
 
     public void ejectChannelAsync(Object ch) {
-        uninjectChannelAsync((Channel)ch);
+        uninjectChannelAsync((Channel) ch);
     }
+
     /**
      * Uninject a specific channel.
      * <p>
@@ -447,7 +440,7 @@ public class TinyProtocol8 {
 
     public void uninjectChannelAsync(Channel channel) {
         // See ChannelInjector in ProtocolLib, line 590
-        NettyPacketManager.executorService.execute(new Runnable() {
+        PacketEvents.packetHandlingExecutorService.execute(new Runnable() {
             @Override
             public void run() {
                 channel.pipeline().remove(handlerName);
@@ -489,7 +482,6 @@ public class TinyProtocol8 {
             }
 
             // Clean up Bukkit
-            HandlerList.unregisterAll(listener);
             unregisterChannelHandler();
         }
     }
@@ -509,11 +501,7 @@ public class TinyProtocol8 {
             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);
-            }
+            msg = onPacketInAsync(player, channel, msg);
 
             if (msg != null) {
                 super.channelRead(ctx, msg);
@@ -523,11 +511,7 @@ public class TinyProtocol8 {
 
         @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);
-            }
+            msg = onPacketOutAsync(player, ctx.channel(), msg);
 
             if (msg != null) {
                 super.write(ctx, msg, promise);

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

@@ -30,19 +30,21 @@ import java.util.Map;
 public class PacketType {
     public static class Status {
         public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
-        public static final byte PING = 0, PONG = 1, SERVER_INFO = 2;
+        public static final byte IN_START = 0, PING = 1, PONG = 2, SERVER_INFO = 3;
 
         public static void init() {
+            packetIds.put(PacketTypeClasses.Status.IN_START, IN_START);
             packetIds.put(PacketTypeClasses.Status.PING, PING);
             packetIds.put(PacketTypeClasses.Status.PONG, PONG);
             packetIds.put(PacketTypeClasses.Status.SERVER_INFO, SERVER_INFO);
         }
     }
+
     public static class Login {
         public static final Map<Class<?>, Byte> packetIds = new HashMap<>();
         public static final byte HANDSHAKE = 0,
-        IN_CUSTOM_PAYLOAD = 1, OUT_CUSTOM_PAYLOAD = 2,IN_START = 3, IN_ENCRYPTION_BEGIN = 4,
-        DISCONNECT = 5, OUT_ENCRYPTION_BEGIN = 6, OUT_SUCCESS = 7;
+                IN_CUSTOM_PAYLOAD = 1, OUT_CUSTOM_PAYLOAD = 2, IN_START = 3, IN_ENCRYPTION_BEGIN = 4,
+                DISCONNECT = 5, OUT_ENCRYPTION_BEGIN = 6, OUT_SUCCESS = 7;
 
         public static void init() {
             packetIds.put(PacketTypeClasses.Login.HANDSHAKE, HANDSHAKE);

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

@@ -29,23 +29,25 @@ import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 
 public class PacketTypeClasses {
     public static class Status {
-        public static Class<?> PING, PONG, SERVER_INFO;
+        public static Class<?> IN_START, PING, PONG, SERVER_INFO;
 
         public static void load() {
+            IN_START = NMSUtils.getNMSClassWithoutException("PacketStatusInStart");
             PING = NMSUtils.getNMSClassWithoutException("PacketStatusInPing");
             PONG = NMSUtils.getNMSClassWithoutException("PacketStatusOutPong");
             SERVER_INFO = NMSUtils.getNMSClassWithoutException("PacketStatusOutServerInfo");
             PacketType.Status.init();
         }
     }
+
     public static class Login {
-        public static Class<?>  HANDSHAKE,
-                IN_CUSTOM_PAYLOAD, OUT_CUSTOM_PAYLOAD,IN_START, IN_ENCRYPTION_BEGIN,
+        public static Class<?> HANDSHAKE,
+                IN_CUSTOM_PAYLOAD, OUT_CUSTOM_PAYLOAD, IN_START, IN_ENCRYPTION_BEGIN,
                 DISCONNECT, OUT_ENCRYPTION_BEGIN, OUT_SUCCESS;
 
         public static void load() {
             HANDSHAKE = NMSUtils.getNMSClassWithoutException("PacketHandshakingInSetProtocol");
-            //In and Out custom payload login packets have been here since AROUND 1.13.2?
+            //In and Out custom payload login packets have been here since AROUND 1.13.2.
             IN_CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginInCustomPayload");
             OUT_CUSTOM_PAYLOAD = NMSUtils.getNMSClassWithoutException("PacketLoginOutCustomPayload");
             IN_START = NMSUtils.getNMSClassWithoutException("PacketLoginInStart");
@@ -138,12 +140,8 @@ public class PacketTypeClasses {
 
             try {
                 BLOCK_PLACE = NMSUtils.getNMSClass(c + "BlockPlace");
-            } catch (ClassNotFoundException e) {
-
-            }
-            try {
                 USE_ITEM = NMSUtils.getNMSClass(c + "UseItem");
-            } catch (ClassNotFoundException e2) {
+            } catch (ClassNotFoundException ignored) {
 
             }
 

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

@@ -47,6 +47,7 @@ import io.github.retrooper.packetevents.packetwrappers.out.entityvelocity.Wrappe
 import io.github.retrooper.packetevents.packetwrappers.out.experience.WrappedPacketOutExperience;
 import io.github.retrooper.packetevents.packetwrappers.out.explosion.WrappedPacketOutExplosion;
 import io.github.retrooper.packetevents.packetwrappers.out.gamestatechange.WrappedPacketOutGameStateChange;
+import io.github.retrooper.packetevents.packetwrappers.out.helditemslot.WrappedPacketOutHeldItemSlot;
 import io.github.retrooper.packetevents.packetwrappers.out.keepalive.WrappedPacketOutKeepAlive;
 import io.github.retrooper.packetevents.packetwrappers.out.kickdisconnect.WrappedPacketOutKickDisconnect;
 import io.github.retrooper.packetevents.packetwrappers.out.position.WrappedPacketOutPosition;
@@ -54,7 +55,6 @@ import io.github.retrooper.packetevents.packetwrappers.out.transaction.WrappedPa
 import io.github.retrooper.packetevents.packetwrappers.out.updatehealth.WrappedPacketOutUpdateHealth;
 import io.github.retrooper.packetevents.utils.reflection.ClassUtil;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import org.bukkit.entity.Player;
 
 import java.lang.reflect.Field;
 import java.util.ArrayList;
@@ -65,31 +65,18 @@ import java.util.Map;
 public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
     private static final Map<Class<?>, Map<Class<?>, Field[]>> fieldCache = new HashMap<>();
     public static ServerVersion version;
-    protected final Player player;
     protected Object packet;
     private Class<?> packetClass;
 
     public WrappedPacket() {
-        this.player = null;
+
     }
 
     public WrappedPacket(final Object packet) {
         this(packet, packet.getClass());
     }
 
-    public WrappedPacket(final Object packet, final Class<?> packetClass) {
-        this(null, packet, packetClass);
-    }
-
-    public WrappedPacket(final Player player, final Object packet) {
-        this(player, packet, packet.getClass());
-    }
-
-    public WrappedPacket(final Player player, final Object packet, Class<?> packetClass) {
-        if (packet == null) {
-            this.player = null;
-            return;
-        }
+    public WrappedPacket(final Object packet, Class<?> packetClass) {
         if (packet.getClass().getSuperclass().equals(PacketTypeClasses.Client.FLYING)) {
             packetClass = PacketTypeClasses.Client.FLYING;
         } else if (packet.getClass().getSuperclass().equals(PacketTypeClasses.Server.ENTITY)) {
@@ -100,128 +87,108 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
 
         if (!fieldCache.containsKey(packetClass)) {
             final Field[] declaredFields = packetClass.getDeclaredFields();
-            List<Field> boolFields = new ArrayList<>();
-            List<Field> byteFields = new ArrayList<>();
-            List<Field> shortFields = new ArrayList<>();
-            List<Field> intFields = new ArrayList<>();
-            List<Field> longFields = new ArrayList<>();
-            List<Field> floatFields = new ArrayList<>();
-            List<Field> doubleFields = new ArrayList<>();
-            List<Field> stringFields = new ArrayList<>();
-
-            List<Field> boolArrayFields = new ArrayList<>();
-            List<Field> byteArrayFields = new ArrayList<>();
-            List<Field> shortArrayFields = new ArrayList<>();
-            List<Field> intArrayFields = new ArrayList<>();
-            List<Field> longArrayFields = new ArrayList<>();
-            List<Field> floatArrayFields = new ArrayList<>();
-            List<Field> doubleArrayFields = new ArrayList<>();
-            List<Field> stringArrayFields = new ArrayList<>();
-
             for (Field f : declaredFields) {
                 f.setAccessible(true);
-                if (f.getType().equals(boolean.class)) {
-                    boolFields.add(f);
-                } else if (f.getType().equals(byte.class)) {
-                    byteFields.add(f);
-                } else if (f.getType().equals(short.class)) {
-                    shortFields.add(f);
-                } else if (f.getType().equals(int.class)) {
-                    intFields.add(f);
-                } else if (f.getType().equals(long.class)) {
-                    longFields.add(f);
-                } else if (f.getType().equals(float.class)) {
-                    floatFields.add(f);
-                } else if (f.getType().equals(double.class)) {
-                    doubleFields.add(f);
-                } else if (f.getType().equals(String.class)) {
-                    stringFields.add(f);
-                } else if (f.getType().equals(boolean[].class)) {
-                    boolArrayFields.add(f);
-                } else if (f.getType().equals(byte[].class)) {
-                    byteArrayFields.add(f);
-                } else if (f.getType().equals(short[].class)) {
-                    shortArrayFields.add(f);
-                } else if (f.getType().equals(int[].class)) {
-                    intArrayFields.add(f);
-                } else if (f.getType().equals(long[].class)) {
-                    longArrayFields.add(f);
-                } else if (f.getType().equals(float[].class)) {
-                    floatArrayFields.add(f);
-                } else if (f.getType().equals(double[].class)) {
-                    doubleArrayFields.add(f);
-                } else if (f.getType().equals(String[].class)) {
-                    stringArrayFields.add(f);
-                }
             }
+            List<Field> boolFields = getFields(boolean.class, declaredFields);
+            List<Field> byteFields = getFields(byte.class, declaredFields);
+            List<Field> shortFields = getFields(short.class, declaredFields);
+            List<Field> intFields = getFields(int.class, declaredFields);
+            ;
+            List<Field> longFields = getFields(long.class, declaredFields);
+            ;
+            List<Field> floatFields = getFields(float.class, declaredFields);
+            ;
+            List<Field> doubleFields = getFields(double.class, declaredFields);
+            ;
+            List<Field> stringFields = getFields(String.class, declaredFields);
+            ;
+
+            List<Field> boolArrayFields = getFields(boolean[].class, declaredFields);
+            ;
+            List<Field> byteArrayFields = getFields(byte[].class, declaredFields);
+            ;
+            List<Field> shortArrayFields = getFields(short[].class, declaredFields);
+            ;
+            List<Field> intArrayFields = getFields(int[].class, declaredFields);
+            ;
+            List<Field> longArrayFields = getFields(long[].class, declaredFields);
+            ;
+            List<Field> floatArrayFields = getFields(float[].class, declaredFields);
+            ;
+            List<Field> doubleArrayFields = getFields(double[].class, declaredFields);
+            ;
+            List<Field> stringArrayFields = getFields(String[].class, declaredFields);
+            ;
+
+            Field[] tmp = new Field[0];
 
             Map<Class<?>, Field[]> map = new HashMap<>();
-            if (!boolFields.isEmpty()) {
-                map.put(boolean.class, boolFields.toArray(new Field[0]));
+            if (boolFields != null) {
+                map.put(boolean.class, boolFields.toArray(tmp));
             }
 
-            if (!byteFields.isEmpty()) {
-                map.put(byte.class, byteFields.toArray(new Field[0]));
+            if (byteFields != null) {
+                map.put(byte.class, byteFields.toArray(tmp));
             }
 
-            if (!shortFields.isEmpty()) {
-                map.put(short.class, shortFields.toArray(new Field[0]));
+            if (shortFields != null) {
+                map.put(short.class, shortFields.toArray(tmp));
             }
 
-            if (!intFields.isEmpty()) {
-                map.put(int.class, intFields.toArray(new Field[0]));
+            if (intFields != null) {
+                map.put(int.class, intFields.toArray(tmp));
             }
 
-            if (!longFields.isEmpty()) {
-                map.put(long.class, longFields.toArray(new Field[0]));
+            if (longFields != null) {
+                map.put(long.class, longFields.toArray(tmp));
             }
 
-            if (!floatFields.isEmpty()) {
-                map.put(float.class, floatFields.toArray(new Field[0]));
+            if (floatFields != null) {
+                map.put(float.class, floatFields.toArray(tmp));
             }
 
-            if (!doubleFields.isEmpty()) {
-                map.put(double.class, doubleFields.toArray(new Field[0]));
+            if (doubleFields != null) {
+                map.put(double.class, doubleFields.toArray(tmp));
             }
 
-            if (!stringFields.isEmpty()) {
-                map.put(String.class, stringFields.toArray(new Field[0]));
+            if (stringFields != null) {
+                map.put(String.class, stringFields.toArray(tmp));
             }
 
-            if (!boolArrayFields.isEmpty()) {
-                map.put(boolean[].class, boolArrayFields.toArray(new Field[0]));
+            if (boolArrayFields != null) {
+                map.put(boolean[].class, boolArrayFields.toArray(tmp));
             }
 
-            if (!byteArrayFields.isEmpty()) {
-                map.put(byte[].class, byteArrayFields.toArray(new Field[0]));
+            if (byteArrayFields != null) {
+                map.put(byte[].class, byteArrayFields.toArray(tmp));
             }
 
-            if (!shortArrayFields.isEmpty()) {
-                map.put(short[].class, shortArrayFields.toArray(new Field[0]));
+            if (shortArrayFields != null) {
+                map.put(short[].class, shortArrayFields.toArray(tmp));
             }
 
-            if (!intArrayFields.isEmpty()) {
-                map.put(int[].class, intArrayFields.toArray(new Field[0]));
+            if (intArrayFields != null) {
+                map.put(int[].class, intArrayFields.toArray(tmp));
             }
 
-            if (!longArrayFields.isEmpty()) {
-                map.put(long[].class, longArrayFields.toArray(new Field[0]));
+            if (longArrayFields != null) {
+                map.put(long[].class, longArrayFields.toArray(tmp));
             }
 
-            if (!floatArrayFields.isEmpty()) {
-                map.put(float[].class, floatArrayFields.toArray(new Field[0]));
+            if (floatArrayFields != null) {
+                map.put(float[].class, floatArrayFields.toArray(tmp));
             }
 
-            if (!doubleArrayFields.isEmpty()) {
-                map.put(double[].class, doubleArrayFields.toArray(new Field[0]));
+            if (doubleArrayFields != null) {
+                map.put(double[].class, doubleArrayFields.toArray(tmp));
             }
 
-            if (!stringArrayFields.isEmpty()) {
-                map.put(String[].class, stringArrayFields.toArray(new Field[0]));
+            if (stringArrayFields != null) {
+                map.put(String[].class, stringArrayFields.toArray(tmp));
             }
             fieldCache.put(packetClass, map);
         }
-        this.player = player;
         this.packet = packet;
         setup();
     }
@@ -256,6 +223,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         WrappedPacketOutExplosion.load();
         WrappedPacketOutEntityStatus.load();
         WrappedPacketOutExperience.load();
+        WrappedPacketOutHeldItemSlot.load();
     }
 
     protected void setup() {
@@ -500,7 +468,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
 
     @Override
     public String readString(int index) {
-       return (String) read(String.class, index);
+        return (String) read(String.class, index);
     }
 
     public Object readAnyObject(int index) {
@@ -523,7 +491,8 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
     public Object readObject(int index, Class<?> type) {
         Map<Class<?>, Field[]> cached = fieldCache.get(packetClass);
         if (cached != null) {
-            if (!cached.containsKey(type)) {
+            Field[] cachedFields = cached.get(type);
+            if (cachedFields == null) {
                 List<Field> typeFields = new ArrayList<>();
                 for (Field f : packetClass.getDeclaredFields()) {
                     f.setAccessible(true);
@@ -533,20 +502,30 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
                 }
                 if (!typeFields.isEmpty()) {
                     cached.put(type, typeFields.toArray(new Field[0]));
+                    cachedFields = cached.get(type);
+                }
+                else {
+                    throw new WrapperFieldNotFoundException("The class you are trying to read fields from does not contain any fields!");
                 }
             }
-
-        }
-        try {
-            return cached.get(type)[index].get(packet);
-        } catch (IllegalAccessException e) {
-            e.printStackTrace();
+            try {
+                return cachedFields[index].get(packet);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
         }
         throw new WrapperFieldNotFoundException(packetClass, type, index);
     }
 
     public Object[] readObjectArray(int index, Class<?> type) {
-        return (Object[]) readObject(index, type);
+        if (type.equals(String.class)) {
+            return readStringArray(index);
+        }
+        try {
+            return (Object[]) readObject(index, getArrayClass(type));
+        } catch (ClassNotFoundException e) {
+            throw new IllegalStateException("PacketEvents failed to find the array class of type " + type.getName());
+        }
     }
 
     @Override
@@ -591,7 +570,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
 
     private void write(Class<?> type, int index, Object value) throws WrapperFieldNotFoundException {
         Field field = getField(type, index);
-        if(field == null) {
+        if (field == null) {
             throw new WrapperFieldNotFoundException(packetClass, type, index);
         }
         try {
@@ -603,7 +582,7 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
 
     private Object read(Class<?> type, int index) throws WrapperFieldNotFoundException {
         Field field = getField(type, index);
-        if(field == null) {
+        if (field == null) {
             throw new WrapperFieldNotFoundException(packetClass, type, index);
         }
         try {
@@ -626,4 +605,42 @@ public class WrappedPacket implements WrapperPacketReader, WrapperPacketWriter {
         return null;
     }
 
+    private List<Field> getFields(Class<?> type, Field[] fields) {
+        List<Field> ret = new ArrayList<>();
+        for (Field field : fields) {
+            if (field.getType() == type) {
+                ret.add(field);
+            }
+        }
+        return ret;
+    }
+
+    private Class<?> getArrayClass(Class<?> componentType) throws ClassNotFoundException {
+        ClassLoader classLoader = componentType.getClassLoader();
+        String name;
+        if (componentType.isArray()) {
+            // just add a leading "["
+            name = "[" + componentType.getName();
+        } else if (componentType == boolean.class) {
+            name = "[Z";
+        } else if (componentType == byte.class) {
+            name = "[B";
+        } else if (componentType == char.class) {
+            name = "[C";
+        } else if (componentType == double.class) {
+            name = "[D";
+        } else if (componentType == float.class) {
+            name = "[F";
+        } else if (componentType == int.class) {
+            name = "[I";
+        } else if (componentType == long.class) {
+            name = "[J";
+        } else if (componentType == short.class) {
+            name = "[S";
+        } else {
+            // must be an object non-array class
+            name = "[L" + componentType.getName() + ";";
+        }
+        return classLoader != null ? classLoader.loadClass(name) : Class.forName(name);
+    }
 }

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

@@ -26,7 +26,7 @@ package io.github.retrooper.packetevents.packetwrappers;
 
 public interface WrapperPacketWriter {
 
-    //TODO write for the arrays
+    // TODO write for the arrays
     void writeBoolean(int index, boolean value);
 
     void writeByte(int index, byte value);

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

@@ -26,9 +26,7 @@ package io.github.retrooper.packetevents.packetwrappers.in.abilities;
 
 import io.github.retrooper.packetevents.annotations.NotNull;
 import io.github.retrooper.packetevents.annotations.Nullable;
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.reflection.Reflection;
 
 public final class WrappedPacketInAbilities extends WrappedPacket {
 

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

@@ -25,17 +25,21 @@
 package io.github.retrooper.packetevents.packetwrappers.in.blockdig;
 
 import io.github.retrooper.packetevents.enums.Direction;
-import io.github.retrooper.packetevents.utils.server.ServerVersion;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
+import io.github.retrooper.packetevents.utils.server.ServerVersion;
+
+import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketInBlockDig extends WrappedPacket {
     private static Class<?> blockDigClass, blockPositionClass, enumDirectionClass, digTypeClass;
     private static boolean isVersionLowerThan_v_1_8;
-    private Object blockPosObj, enumDirObj, digTypeObj;
+    private Object blockPosObj;
+    private Object enumDirObj;
+
     public WrappedPacketInBlockDig(Object packet) {
         super(packet);
     }
@@ -74,8 +78,12 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
             if(blockPosObj == null) {
                 blockPosObj = readObject(0, blockPositionClass);
             }
-            WrappedPacket blockPosWrapper = new WrappedPacket(blockPosObj);
-            return blockPosWrapper.readInt(0);
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
         }
     }
 
@@ -91,8 +99,12 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
             if(blockPosObj == null) {
                 blockPosObj = readObject(0, blockPositionClass);
             }
-            WrappedPacket blockPosWrapper = new WrappedPacket(blockPosObj);
-            return blockPosWrapper.readInt(1);
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
         }
     }
 
@@ -108,19 +120,22 @@ public final class WrappedPacketInBlockDig extends WrappedPacket {
             if(blockPosObj == null) {
                 blockPosObj = readObject(0, blockPositionClass);
             }
-            WrappedPacket blockPosWrapper = new WrappedPacket(blockPosObj);
-            return blockPosWrapper.readInt(2);
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
         }
     }
 
     /**
-     * Get the direction
-     * Is Direction.NULL on 1.7.10 FOR NOW
+     * Get the direction / Get the face.
      * @return Direction
      */
     public Direction getDirection() {
         if(isVersionLowerThan_v_1_8) {
-            return Direction.NULL;
+            return Direction.values()[readInt(3)];
         }
         else {
             if(enumDirObj == null) {

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

@@ -24,115 +24,75 @@
 
 package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
 
+import io.github.retrooper.packetevents.enums.Direction;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.ItemStack;
 
 
 public final class WrappedPacketInBlockPlace extends WrappedPacket {
     private static boolean isHigherThan_v_1_8_8, isHigherThan_v_1_7_10;
-    private WrappedPacket cachedWrappedPacket;
 
-    public WrappedPacketInBlockPlace(final Player player, final Object packet) {
-        super(player, packet);
+    public WrappedPacketInBlockPlace(final Object packet) {
+        super(packet);
     }
 
     public static void load() {
         isHigherThan_v_1_8_8 = version.isHigherThan(ServerVersion.v_1_8_8);
         isHigherThan_v_1_7_10 = version.isHigherThan(ServerVersion.v_1_7_10);
-        if (isHigherThan_v_1_7_10) {
-            WrappedPacketInBlockPlace_1_8.load();
-        }
+        WrappedPacketInBlockPlace_1_9.load();
     }
 
-    public Player getPlayer() {
-        return player;
+    public Direction getDirection() {
+        if (isHigherThan_v_1_8_8) {
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
+            return Direction.valueOf(((Enum) blockPlace_1_9.getEnumDirectionObject()).name());
+        } else if (isHigherThan_v_1_7_10) {
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            return Direction.values()[blockPlace_1_8.getFace()];
+        } else {
+            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
+            return Direction.values()[blockPlace_1_7_10.face];
+        }
     }
 
     public int getX() {
         if (isHigherThan_v_1_8_8) {
-            if (cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
-                cachedWrappedPacket = blockPlace_1_9;
-                return blockPlace_1_9.getBlock().getX();
-            }
-            return ((WrappedPacketInBlockPlace_1_9)cachedWrappedPacket).getBlock().getX();
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
+            return blockPlace_1_9.getX();
         } else if (isHigherThan_v_1_7_10) {
-           if(cachedWrappedPacket == null) {
-               WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-               cachedWrappedPacket = blockPlace_1_8;
-               return blockPlace_1_8.getX();
-           }
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            return blockPlace_1_8.getX();
         } else {
             WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
             return blockPlace_1_7_10.x;
         }
-        return 0;
     }
 
     public int getY() {
         if (isHigherThan_v_1_8_8) {
-            if (cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
-                cachedWrappedPacket = blockPlace_1_9;
-                return blockPlace_1_9.getBlock().getY();
-            }
-            return ((WrappedPacketInBlockPlace_1_9)cachedWrappedPacket).getBlock().getX();
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
+            return blockPlace_1_9.getY();
+
         } else if (isHigherThan_v_1_7_10) {
-            if(cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-                cachedWrappedPacket = blockPlace_1_8;
-                return blockPlace_1_8.getY();
-            }
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            return blockPlace_1_8.getY();
         } else {
             WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
             return blockPlace_1_7_10.y;
         }
-        return 0;
     }
 
     public int getZ() {
         if (isHigherThan_v_1_8_8) {
-            if (cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
-                cachedWrappedPacket = blockPlace_1_9;
-                return blockPlace_1_9.getBlock().getZ();
-            }
-            return ((WrappedPacketInBlockPlace_1_9)cachedWrappedPacket).getBlock().getX();
+            WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(packet);
+            return blockPlace_1_9.getZ();
         } else if (isHigherThan_v_1_7_10) {
-            if(cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-                cachedWrappedPacket = blockPlace_1_8;
-                return blockPlace_1_8.getZ();
-            }
+            WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
+            return blockPlace_1_8.getZ();
         } else {
             WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
             return blockPlace_1_7_10.z;
         }
-        return 0;
-    }
-
-    public ItemStack getItemStack() {
-        if (isHigherThan_v_1_8_8) {
-            if (cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_9 blockPlace_1_9 = new WrappedPacketInBlockPlace_1_9(getPlayer(), packet);
-                cachedWrappedPacket = blockPlace_1_9;
-                return new ItemStack(blockPlace_1_9.getBlock().getType());
-            }
-            return new ItemStack(((WrappedPacketInBlockPlace_1_9)cachedWrappedPacket).getBlock().getType());
-        } else if (isHigherThan_v_1_7_10) {
-            if(cachedWrappedPacket == null) {
-                WrappedPacketInBlockPlace_1_8 blockPlace_1_8 = new WrappedPacketInBlockPlace_1_8(packet);
-                cachedWrappedPacket = blockPlace_1_8;
-                return blockPlace_1_8.getItemStack();
-            }
-        } else {
-            WrappedPacketInBlockPlace_1_7_10 blockPlace_1_7_10 = new WrappedPacketInBlockPlace_1_7_10(packet);
-            return blockPlace_1_7_10.itemStack;
-        }
-        return null;
     }
 
 }

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

@@ -25,14 +25,12 @@
 package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
 
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace;
-import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
 final class WrappedPacketInBlockPlace_1_7_10 extends WrappedPacket {
     public int x, y, z;
     public ItemStack itemStack;
-    public int blockFace;
+    public int face;
 
     WrappedPacketInBlockPlace_1_7_10(final Object packet) {
         super(packet);
@@ -41,13 +39,14 @@ final class WrappedPacketInBlockPlace_1_7_10 extends WrappedPacket {
 
     @Override
     protected void setup() {
-        final PacketPlayInBlockPlace blockPlace = (PacketPlayInBlockPlace) packet;
+        final net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace blockPlace =
+                (net.minecraft.server.v1_7_R4.PacketPlayInBlockPlace) packet;
 
         x = blockPlace.c();
         y = blockPlace.d();
         z = blockPlace.e();
 
-        this.blockFace = blockPlace.d();
+        this.face = blockPlace.d();
 
         net.minecraft.server.v1_7_R4.ItemStack stack = blockPlace.getItemStack();
         this.itemStack = org.bukkit.craftbukkit.v1_7_R4.inventory.CraftItemStack.asBukkitCopy(stack);

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

@@ -24,8 +24,6 @@
 
 package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
 
-import io.github.retrooper.packetevents.exceptions.WrapperFieldNotFoundException;
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.reflection.Reflection;
@@ -34,41 +32,31 @@ import org.bukkit.inventory.ItemStack;
 import java.lang.reflect.InvocationTargetException;
 
 final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
-    private static Class<?> blockPlaceClass, blockPositionClass, blockPositionSuperClass;
     private Object blockPosObj;
 
     WrappedPacketInBlockPlace_1_8(final Object packet) {
         super(packet);
     }
 
-    protected static void load() {
-        blockPlaceClass = PacketTypeClasses.Client.BLOCK_PLACE;
-        try {
-            blockPositionClass = NMSUtils.getNMSClass("BlockPosition");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-        blockPositionSuperClass = blockPositionClass.getSuperclass();
-    }
-
     public int getX() {
         if(blockPosObj == null) {
-            blockPosObj = new WrappedPacket(packet).readObject(0, blockPositionClass);
+            blockPosObj = readObject(1, NMSUtils.blockPosClass);
         }
         try {
-            return (int)Reflection.getMethod(blockPositionSuperClass, "getX", 0).invoke(blockPosObj);
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
         return 0;
     }
+    
 
     public int getY() {
         if(blockPosObj == null) {
-            blockPosObj = new WrappedPacket(packet).readObject(0, blockPositionClass);
+            blockPosObj = readObject(1, NMSUtils.blockPosClass);
         }
         try {
-            return (int)Reflection.getMethod(blockPositionSuperClass, "getY", 0).invoke(blockPosObj);
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
@@ -77,10 +65,10 @@ final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
 
     public int getZ() {
         if(blockPosObj == null) {
-            blockPosObj = new WrappedPacket(packet).readObject(0, blockPositionClass);
+            blockPosObj = readObject(1, NMSUtils.blockPosClass);
         }
         try {
-            return (int)Reflection.getMethod(blockPositionSuperClass, "getZ", 0).invoke(blockPosObj);
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
@@ -90,4 +78,8 @@ final class WrappedPacketInBlockPlace_1_8 extends WrappedPacket {
     public ItemStack getItemStack() {
         return NMSUtils.toBukkitItemStack(readObject(0, NMSUtils.nmsItemStackClass));
     }
+
+    public int getFace() {
+        return readInt(0);
+    }
 }

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

@@ -26,20 +26,84 @@ package io.github.retrooper.packetevents.packetwrappers.in.blockplace;
 
 
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.BlockIteratorUtils;
-import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
+import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
+
+import java.lang.reflect.InvocationTargetException;
 
 final class WrappedPacketInBlockPlace_1_9 extends WrappedPacket {
-    public WrappedPacketInBlockPlace_1_9(final Player player, final Object packet) {
-        super(player, packet);
+    private Object blockPosObj;
+    private static Class<?> movingObjectPositionBlockClass;
+
+    public static void load() {
+        movingObjectPositionBlockClass = NMSUtils.getNMSClassWithoutException("MovingObjectPositionBlock");
     }
 
-    public Player getPlayer() {
-        return this.player;
+    public WrappedPacketInBlockPlace_1_9(final Object packet) {
+        super(packet);
     }
 
-    public Block getBlock() {
-        return BlockIteratorUtils.getBlockLookingAt(getPlayer(),3);
+    public int getX() {
+        if (blockPosObj == null) {
+            if (movingObjectPositionBlockClass == null) {
+                blockPosObj = readObject(0, NMSUtils.blockPosClass);
+            } else {
+                Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+                WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+                blockPosObj = movingObjectPosWrapper.readObject(0, NMSUtils.blockPosClass);
+            }
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return 0;
+    }
+
+    public int getY() {
+        if (blockPosObj == null) {
+            if (movingObjectPositionBlockClass == null) {
+                blockPosObj = readObject(0, NMSUtils.blockPosClass);
+            } else {
+                Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+                WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+                blockPosObj = movingObjectPosWrapper.readObject(0, NMSUtils.blockPosClass);
+            }
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return 0;
+    }
+
+    public int getZ() {
+        if (blockPosObj == null) {
+            if (movingObjectPositionBlockClass == null) {
+                blockPosObj = readObject(0, NMSUtils.blockPosClass);
+            } else {
+                Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+                WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+                blockPosObj = movingObjectPosWrapper.readObject(0, NMSUtils.blockPosClass);
+            }
+        }
+        try {
+            return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return 0;
+    }
+
+    public Object getEnumDirectionObject() {
+        if (movingObjectPositionBlockClass == null) {
+            return readObject(0, NMSUtils.enumDirectionClass);
+        } else {
+            Object movingObjectPos = readObject(0, movingObjectPositionBlockClass);
+            WrappedPacket movingObjectPosWrapper = new WrappedPacket(movingObjectPos);
+            return movingObjectPosWrapper.readObject(0, NMSUtils.enumDirectionClass);
+        }
     }
 }

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

@@ -46,7 +46,7 @@ public final class WrappedPacketInCustomPayload extends WrappedPacket {
         packetDataSerializerClass = NMSUtils.getNMSClassWithoutException("PacketDataSerializer");
         try {
             byteBufClass = NMSUtils.getNettyClass("buffer.ByteBuf");
-        } catch (ClassNotFoundException e) {
+        } catch (ClassNotFoundException ignored) {
 
         }
         try {

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

@@ -34,14 +34,13 @@ import org.bukkit.entity.Entity;
 import java.util.HashMap;
 
 public final class WrappedPacketInEntityAction extends WrappedPacket {
-    private static final HashMap<String, PlayerAction> cachedPlayerActionNames = new HashMap<String, PlayerAction>();
-    private static final HashMap<Integer, PlayerAction> cachedPlayerActionIDs = new HashMap<Integer, PlayerAction>();
+    private static final HashMap<String, PlayerAction> cachedPlayerActionNames = new HashMap<>();
+    private static final HashMap<Integer, PlayerAction> cachedPlayerActionIDs = new HashMap<>();
     @Nullable
     private static Class<?> enumPlayerActionClass;
     private static boolean isLowerThan_v_1_8;
     private Entity entity;
     private int entityId = -1;
-    private PlayerAction action;
 
     public WrappedPacketInEntityAction(final Object packet) {
         super(packet);
@@ -91,10 +90,10 @@ public final class WrappedPacketInEntityAction extends WrappedPacket {
      * @return Entity ID
      */
     public int getEntityId() {
-        if(entityId != -1) {
-            return entityId;
+        if(entityId == -1) {
+            entityId = readInt(0);
         }
-        return readInt(0);
+        return entityId;
     }
 
     /**

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

@@ -24,7 +24,6 @@
 
 package io.github.retrooper.packetevents.packetwrappers.in.helditemslot;
 
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public final class WrappedPacketInHeldItemSlot extends WrappedPacket {

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

@@ -29,16 +29,14 @@ import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.utils.reflection.Reflection;
 
 public final class WrappedPacketInKeepAlive extends WrappedPacket {
-    private static Class<?> packetClass;
     private static boolean integerPresentInIndex0;
-    private long id;
 
     public WrappedPacketInKeepAlive(final Object packet) {
         super(packet);
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Client.KEEP_ALIVE;
+        Class<?> packetClass = PacketTypeClasses.Client.KEEP_ALIVE;
         integerPresentInIndex0 = Reflection.getField(packetClass, int.class, 0) != null;
     }
 

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

@@ -25,7 +25,6 @@
 package io.github.retrooper.packetevents.packetwrappers.in.settings;
 
 import io.github.retrooper.packetevents.annotations.Nullable;
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
@@ -45,7 +44,6 @@ public class WrappedPacketInSettings extends WrappedPacket {
     }
 
     public static void load() {
-        Class<?> packetClass = PacketTypeClasses.Client.SETTINGS;
 
         isLowerThan_v_1_8 = version.isLowerThan(ServerVersion.v_1_8);
 

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

@@ -30,6 +30,8 @@ import io.github.retrooper.packetevents.packetwrappers.out.chat.WrappedPacketOut
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.reflection.Reflection;
 
+import java.lang.reflect.InvocationTargetException;
+
 public class WrappedPacketInUpdateSign extends WrappedPacket {
     private static boolean v_1_7_mode, strArrayMode;
     private static Class<?> blockPosClass, iChatBaseComponentClass;
@@ -59,45 +61,54 @@ public class WrappedPacketInUpdateSign extends WrappedPacket {
     }
 
     public int getX() {
-        if(v_1_7_mode) {
+        if (v_1_7_mode) {
             return readInt(0);
-        }
-        else {
-            if(blockPosObj == null) {
+        } else {
+            if (blockPosObj == null) {
                 blockPosObj = readObject(0, blockPosClass);
-                WrappedPacket blockPosWrapper = new WrappedPacket(blockPosObj);
-                return blockPosWrapper.readInt(0);
+
             }
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getX", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
         }
-        return 0;
     }
 
     public int getY() {
-        if(v_1_7_mode) {
+        if (v_1_7_mode) {
             return readInt(1);
-        }
-        else {
-            if(blockPosObj == null) {
+        } else {
+            if (blockPosObj == null) {
                 blockPosObj = readObject(0, blockPosClass);
-                WrappedPacket blockPosWrapper = new WrappedPacket(blockPosObj);
-                return blockPosWrapper.readInt(1);
+
             }
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getY", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
         }
-        return 0;
     }
 
     public int getZ() {
-        if(v_1_7_mode) {
+        if (v_1_7_mode) {
             return readInt(2);
-        }
-        else {
-            if(blockPosObj == null) {
+        } else {
+            if (blockPosObj == null) {
                 blockPosObj = readObject(0, blockPosClass);
-                WrappedPacket blockPosWrapper = new WrappedPacket(blockPosObj);
-                return blockPosWrapper.readInt(2);
+
             }
+            try {
+                return (int) Reflection.getMethod(blockPosObj.getClass().getSuperclass(), "getZ", 0).invoke(blockPosObj);
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+            return -1;
         }
-        return 0;
     }
 
     public String[] getTextLines() {
@@ -106,7 +117,7 @@ public class WrappedPacketInUpdateSign extends WrappedPacket {
             return readStringArray(0);
         } else {
             //1.8 uses this for example
-            Object[] iChatComponents = readObjectArray(0, iChatBaseComponentClass);
+            Object[] iChatComponents = (Object[]) readAnyObject(1);
             String[] lines = new String[iChatComponents.length];
             for (int i = 0; i < iChatComponents.length; i++) {
                 lines[i] = WrappedPacketOutChat.

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

@@ -35,10 +35,11 @@ import java.util.Arrays;
 import java.util.HashMap;
 
 public class WrappedPacketInWindowClick extends WrappedPacket {
-    private static final HashMap<String, Integer> invClickTypeMapCache = new HashMap<String, Integer>();
-    private static final HashMap<Integer, ArrayList<WindowClickType>> windowClickTypeCache = new HashMap<Integer, ArrayList<WindowClickType>>();
-    private static Class<?> packetClass, invClickTypeClass;
-    private static boolean isClickModePrimitive = false;
+    private static final HashMap<String, Integer> invClickTypeMapCache = new HashMap<>();
+    private static final HashMap<Integer, ArrayList<WindowClickType>> windowClickTypeCache = new HashMap<>();
+    private static Class<?> invClickTypeClass;
+    private static boolean isClickModePrimitive;
+    // TODO: All the fields below are useless cuz there is never a value assigned to them - change this
     private int id;
     private int slot;
     private int button;
@@ -51,7 +52,7 @@ public class WrappedPacketInWindowClick extends WrappedPacket {
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Client.WINDOW_CLICK;
+        Class<?> packetClass = PacketTypeClasses.Client.WINDOW_CLICK;
         invClickTypeClass = NMSUtils.getNMSClassWithoutException("InventoryClickType");
 
         invClickTypeMapCache.put("PICKUP", 0);
@@ -156,6 +157,7 @@ public class WrappedPacketInWindowClick extends WrappedPacket {
             return WindowClickType.UNKNOWN;
         }
 
+        // TODO: This has no use cuz the fields used are never getting assigned a value to them
         if (mode == 4) {
             if (slot == -999) {
                 if (button == 0) {

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

@@ -25,7 +25,6 @@
 package io.github.retrooper.packetevents.packetwrappers.out.abilities;
 
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 
 import java.lang.reflect.Constructor;

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

@@ -32,9 +32,8 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutAbilities extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass;
     private static Constructor<?> packetConstructor;
-    private boolean isListening = false;
+    private boolean isListening;
     private boolean vulnerable, flying, allowFlight, instantBuild;
     private float flySpeed, walkSpeed;
 
@@ -55,7 +54,7 @@ public final class WrappedPacketOutAbilities extends WrappedPacket implements Se
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.ABILITIES;
+        Class<?> packetClass = PacketTypeClasses.Server.ABILITIES;
 
         try {
             packetConstructor = packetClass.getConstructor(PlayerAbilitiesUtils.playerAbilitiesClass);

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

@@ -33,13 +33,14 @@ import org.bukkit.entity.Entity;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.HashMap;
+import java.util.Map;
 
 public final class WrappedPacketOutAnimation extends WrappedPacket implements SendableWrapper {
-    private static Class<?> animationClass, nmsEntityClass;
+    private static Class<?> nmsEntityClass;
     private static Constructor<?> animationConstructor;
 
-    private static final HashMap<Integer, EntityAnimationType> cachedAnimationIDS = new HashMap<Integer, EntityAnimationType>();
-    private static final HashMap<EntityAnimationType, Integer> cachedAnimations = new HashMap<EntityAnimationType, Integer>();
+    private static final Map<Integer, EntityAnimationType> cachedAnimationIDS = new HashMap<>();
+    private static final Map<EntityAnimationType, Integer> cachedAnimations = new HashMap<>();
     private Entity entity;
     private int entityID = -1;
     private EntityAnimationType type;
@@ -58,7 +59,7 @@ public final class WrappedPacketOutAnimation extends WrappedPacket implements Se
     }
 
     public static void load() {
-        animationClass = PacketTypeClasses.Server.ANIMATION;
+        Class<?> animationClass = PacketTypeClasses.Server.ANIMATION;
         try {
             nmsEntityClass = NMSUtils.getNMSClass("Entity");
         } catch (ClassNotFoundException e) {

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/blockchange/WrappedPacketOutBlockChange.java

@@ -0,0 +1,53 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 retrooper
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.out.blockchange;
+
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+class WrappedPacketOutBlockChange extends WrappedPacket {
+    public WrappedPacketOutBlockChange(Object packet) {
+        super(packet);
+    }
+//to-do load
+    @Override
+    protected void setup() {
+        //1.7 - int, int, int, Block, int data
+        //1.8+ - BlockPosition, IBlockData
+
+        //Constructors
+        //1.7 - int, int, int, World
+
+        //1.8->~1.12.2(World, BlockPosition)
+
+        //~1.13->~1.14(IBlockAccess, BlockPosition)
+        //1.16+(BlockPosition, IBlockData)
+        net.minecraft.server.v1_7_R4.PacketPlayOutBlockChange bc;
+        net.minecraft.server.v1_8_R3.PacketPlayOutBlockChange bc1;
+        net.minecraft.server.v1_9_R1.PacketPlayOutBlockChange bc2;
+        net.minecraft.server.v1_12_R1.PacketPlayOutBlockChange bc3;
+        net.minecraft.server.v1_13_R2.PacketPlayOutBlockChange bc4;
+        net.minecraft.server.v1_16_R2.PacketPlayOutBlockChange bc5;
+    }
+}

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

@@ -25,12 +25,11 @@
 package io.github.retrooper.packetevents.packetwrappers.out.chat;
 
 import io.github.retrooper.packetevents.annotations.Beta;
-import io.github.retrooper.packetevents.annotations.NotNull;
 import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
-import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
+import io.github.retrooper.packetevents.utils.reflection.Reflection;
 import io.github.retrooper.packetevents.utils.reflection.SubclassUtil;
 
 import java.lang.reflect.Constructor;
@@ -56,9 +55,9 @@ public final class WrappedPacketOutChat extends WrappedPacket implements Sendabl
     //0 = Byte
     //1 = Byte, Boolean
     private static byte chatTypeMessageEnumConstructorMode;
-    private static final HashMap<ChatPosition, Byte> cachedChatPositions = new HashMap<ChatPosition, Byte>();
-    private static final HashMap<Byte, ChatPosition> cachedChatPositionIntegers = new HashMap<Byte, ChatPosition>();
-    private static final HashMap<String, Byte> cachedChatMessageTypeIntegers = new HashMap<String, Byte>();
+    private static final HashMap<ChatPosition, Byte> cachedChatPositions = new HashMap<>();
+    private static final HashMap<Byte, ChatPosition> cachedChatPositionIntegers = new HashMap<>();
+    private static final HashMap<String, Byte> cachedChatMessageTypeIntegers = new HashMap<>();
     private String message;
     private ChatPosition chatPosition;
     private UUID uuid;

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

@@ -36,7 +36,6 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Modifier;
 
 public class WrappedPacketOutCustomPayload extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass;
     private static Constructor<?> constructor;
     private static Constructor<?> packetDataSerializerConstructor;
     private static Constructor<?> minecraftKeyConstructor;
@@ -49,13 +48,13 @@ public class WrappedPacketOutCustomPayload extends WrappedPacket implements Send
     private boolean isListening = false;
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.CUSTOM_PAYLOAD;
+        Class<?> packetClass = PacketTypeClasses.Server.CUSTOM_PAYLOAD;
         packetDataSerializerClass = NMSUtils.getNMSClassWithoutException("PacketDataSerializer");
         minecraftKeyClass = NMSUtils.getNMSClassWithoutException("MinecraftKey");
 
         try {
             byteBufClass = NMSUtils.getNettyClass("buffer.ByteBuf");
-        } catch (ClassNotFoundException e) {
+        } catch (ClassNotFoundException ignored) {
 
         }
         try {

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

@@ -36,14 +36,13 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 
 public class WrappedPacketOutEntity extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass;
     //Byte = 1.7.10->1.8.8, Int = 1.9->1.15.x, Short = 1.16.x
-    private static byte mode = 0; //byte = 0, int = 1, short = 2
-    private static double dXYZDivisor = 0.0;
-    private static int yawByteIndex = 0;
+    private static byte mode; //byte = 0, int = 1, short = 2
+    private static double dXYZDivisor;
+    private static int yawByteIndex;
     private static int pitchByteIndex = 1;
     private Entity entity;
-    private boolean isListening = false;
+    private boolean isListening;
     private static Constructor<?> entityPacketConstructor;
     private int entityID;
     private double deltaX, deltaY, deltaZ;
@@ -75,7 +74,7 @@ public class WrappedPacketOutEntity extends WrappedPacket implements SendableWra
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.ENTITY;
+        Class<?> packetClass = PacketTypeClasses.Server.ENTITY;
 
         Field dxField = Reflection.getField(packetClass, 1);
         assert dxField != null;

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

@@ -27,8 +27,7 @@ package io.github.retrooper.packetevents.packetwrappers.out.entitymetadata;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public class WrappedPacketOutEntityMetadata extends WrappedPacket {
-    private boolean isListening = false;
-    private int entityID;
+    private boolean isListening;
     public WrappedPacketOutEntityMetadata(Object packet) {
         super(packet);
         isListening = true;
@@ -38,7 +37,7 @@ public class WrappedPacketOutEntityMetadata extends WrappedPacket {
         if (isListening) {
             return readInt(0);
         } else {
-            return entityID;
+            return 0;
         }
     }
 }

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

@@ -35,8 +35,8 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public class WrappedPacketOutEntityTeleport extends WrappedPacket implements SendableWrapper {
-    private static boolean legacyVersionMode = false;
-    private static boolean ultraLegacyVersionMode = false;
+    private static boolean legacyVersionMode;
+    private static boolean ultraLegacyVersionMode;
     private boolean listeningMode = false;
     private static final float rotationMultiplier = 256.0F / 360.0F;
     private static Constructor<?> constructor;

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

@@ -36,12 +36,12 @@ import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutEntityVelocity extends WrappedPacket implements SendableWrapper {
     private static Constructor<?> velocityConstructor, vec3dConstructor;
-    private static Class<?> velocityClass, vec3dClass;
+    private static Class<?> vec3dClass;
     private static boolean isVec3dPresent;
     private int entityID = -1;
     private double velocityX, velocityY, velocityZ;
     private Entity entity;
-    private boolean isListening = false;
+    private boolean isListening;
 
     public WrappedPacketOutEntityVelocity(final Object packet) {
         super(packet);
@@ -69,7 +69,7 @@ public final class WrappedPacketOutEntityVelocity extends WrappedPacket implemen
      * 1.14+ use int, Vec3D style
      */
     public static void load() {
-        velocityClass = PacketTypeClasses.Server.ENTITY_VELOCITY;
+        Class<?> velocityClass = PacketTypeClasses.Server.ENTITY_VELOCITY;
         if (version.isHigherThan(ServerVersion.v_1_13_2)) {
             try {
                 vec3dClass = NMSUtils.getNMSClass("Vec3D");

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/explosion/WrappedPacketOutExplosion.java

@@ -36,14 +36,13 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class WrappedPacketOutExplosion extends WrappedPacket implements SendableWrapper {
-    private static Class<?> chunkPosClass, blockPosClass, vec3DClass;
     private static Constructor<?> chunkPosConstructor, blockPosConstructor, packetConstructor, vec3dConstructor;
 
     public static void load() {
-        chunkPosClass = NMSUtils.getNMSClassWithoutException("ChunkPosition");
-        blockPosClass = NMSUtils.getNMSClassWithoutException("BlockPosition");
+        Class<?> chunkPosClass = NMSUtils.getNMSClassWithoutException("ChunkPosition");
+        Class<?> blockPosClass = NMSUtils.getNMSClassWithoutException("BlockPosition");
         Class<?> packetClass = NMSUtils.getNMSClassWithoutException("PacketPlayOutExplosion");
-        vec3DClass = NMSUtils.getNMSClassWithoutException("Vec3D");
+        Class<?> vec3DClass = NMSUtils.getNMSClassWithoutException("Vec3D");
         try {
             packetConstructor = packetClass.getConstructor(double.class, double.class, double.class, float.class, List.class, vec3DClass);
             vec3dConstructor = vec3DClass.getDeclaredConstructor(double.class, double.class, double.class);

src/main/java/io/github/retrooper/packetevents/packetwrappers/out/helditemslot/WrappedPacketOutHeldItemSlot.java

@@ -0,0 +1,71 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 retrooper
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package io.github.retrooper.packetevents.packetwrappers.out.helditemslot;
+
+import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
+import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
+import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class WrappedPacketOutHeldItemSlot extends WrappedPacket implements SendableWrapper {
+    private static Constructor<?> packetConstructor;
+    public static void load() {
+        try {
+            packetConstructor = PacketTypeClasses.Server.HELD_ITEM_SLOT.getConstructor(int.class);
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private int slot;
+    public WrappedPacketOutHeldItemSlot(Object packet) {
+        super(packet);
+    }
+
+    public WrappedPacketOutHeldItemSlot(int slot) {
+        this.slot = slot;
+    }
+
+    public int getCurrentSelectedSlot() {
+        if(packet == null){
+            return slot;
+        }
+        return readInt(0);
+    }
+
+    @Override
+    public Object asNMSPacket() {
+        try {
+            return packetConstructor.newInstance(slot);
+        } catch (InstantiationException |
+                 IllegalAccessException |
+                 InvocationTargetException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

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

@@ -33,11 +33,10 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public class WrappedPacketOutKeepAlive extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass;
     private static Constructor<?> keepAliveConstructor;
     private static boolean integerMode;
     private long id;
-    private boolean isListening = false;
+    private boolean isListening;
 
     public WrappedPacketOutKeepAlive(Object packet) {
         super(packet);
@@ -45,11 +44,11 @@ public class WrappedPacketOutKeepAlive extends WrappedPacket implements Sendable
     }
 
     public WrappedPacketOutKeepAlive(long id) {
-        super();
+        this.id = id;
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.KEEP_ALIVE;
+        Class<?> packetClass = PacketTypeClasses.Server.KEEP_ALIVE;
         integerMode = Reflection.getField(packetClass, int.class, 0) != null;
 
         if (integerMode) {
@@ -91,7 +90,7 @@ public class WrappedPacketOutKeepAlive extends WrappedPacket implements Sendable
     public Object asNMSPacket() {
         if (integerMode) {
             try {
-                return keepAliveConstructor.newInstance((int) id);
+                return keepAliveConstructor.newInstance(id);
             } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
                 e.printStackTrace();
             }

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

@@ -34,10 +34,10 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutKickDisconnect extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass, iChatBaseComponentClass;
+    private static Class<?> iChatBaseComponentClass;
     private static Constructor<?> kickDisconnectConstructor;
     private String kickMessage;
-    private boolean isListening = false;
+    private boolean isListening;
 
     public WrappedPacketOutKickDisconnect(final Object packet) {
         super(packet);
@@ -50,7 +50,7 @@ public final class WrappedPacketOutKickDisconnect extends WrappedPacket implemen
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.KICK_DISCONNECT;
+        Class<?> packetClass = PacketTypeClasses.Server.KICK_DISCONNECT;
         try {
             iChatBaseComponentClass = NMSUtils.getNMSClass("IChatBaseComponent");
         } catch (ClassNotFoundException e) {

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

@@ -24,27 +24,22 @@
 
 package io.github.retrooper.packetevents.packetwrappers.out.position;
 
-import io.github.retrooper.packetevents.packettype.PacketTypeClasses;
 import io.github.retrooper.packetevents.packetwrappers.WrappedPacket;
 
 public final class WrappedPacketOutPosition extends WrappedPacket {
-    private static Class<?> packetClass;
     private double x;
     private double y;
     private double z;
     private float yaw;
     private float pitch;
 
-    private boolean isListening = false;
+    private final boolean isListening = true;
 
     public WrappedPacketOutPosition(Object packet) {
         super(packet);
-        isListening = true;
     }
 
-    public static void load() {
-        packetClass = PacketTypeClasses.Server.POSITION;
-    }
+    public static void load() {}
 
     @Override
     protected void setup() {

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

@@ -32,7 +32,6 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public class WrappedPacketOutTransaction extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass;
     private static Constructor<?> packetConstructor;
     private int windowId;
     private short actionNumber;
@@ -51,7 +50,7 @@ public class WrappedPacketOutTransaction extends WrappedPacket implements Sendab
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.TRANSACTION;
+        Class<?> packetClass = PacketTypeClasses.Server.TRANSACTION;
 
         try {
             packetConstructor = packetClass.getConstructor(int.class, short.class, boolean.class);

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

@@ -33,11 +33,10 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 
 public final class WrappedPacketOutUpdateHealth extends WrappedPacket implements SendableWrapper {
-    private static Class<?> packetClass;
     private static Constructor<?> packetConstructor;
     private float health, foodSaturation;
     private int food;
-    private boolean isListening = false;
+    private boolean isListening;
 
     public WrappedPacketOutUpdateHealth(final Object packet) {
         super(packet);
@@ -59,7 +58,7 @@ public final class WrappedPacketOutUpdateHealth extends WrappedPacket implements
     }
 
     public static void load() {
-        packetClass = PacketTypeClasses.Server.UPDATE_HEALTH;
+        Class<?> packetClass = PacketTypeClasses.Server.UPDATE_HEALTH;
 
         try {
             packetConstructor = packetClass.getConstructor(float.class, int.class, float.class);

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

@@ -25,14 +25,15 @@
 package io.github.retrooper.packetevents.settings;
 
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
+import net.minecraft.server.v1_8_R3.Packet;
 
 public class PacketEventsSettings {
     private ServerVersion backupServerVersion = ServerVersion.v_1_7_10;
     private boolean injectAsync = true;
     private boolean ejectAsync = true;
-    private boolean useProtocolLibIfAvailable = false;
     private boolean checkForUpdates = true;
     private boolean injectEarly = true;
+    private int packetHandlingThreadCount = 1;
 
     public PacketEventsSettings backupServerVersion(ServerVersion serverVersion) {
         this.backupServerVersion = serverVersion;
@@ -50,11 +51,6 @@ public class PacketEventsSettings {
         return this;
     }
 
-    public PacketEventsSettings useProtocolLibIfAvailable(boolean useProtocolLibIfAvailable) {
-        this.useProtocolLibIfAvailable = useProtocolLibIfAvailable;
-        return this;
-    }
-
     public PacketEventsSettings checkForUpdates(boolean checkForUpdates) {
         this.checkForUpdates = checkForUpdates;
         return this;
@@ -66,6 +62,11 @@ public class PacketEventsSettings {
         return this;
     }
 
+    public PacketEventsSettings packetHandlingThreadCount(int threadCount) {
+        this.packetHandlingThreadCount = threadCount;
+        return this;
+    }
+
     public ServerVersion getBackupServerVersion() {
         return backupServerVersion;
     }
@@ -78,10 +79,6 @@ public class PacketEventsSettings {
         return ejectAsync;
     }
 
-    public boolean shouldUseProtocolLibIfAvailable() {
-        return useProtocolLibIfAvailable;
-    }
-
     public boolean shouldCheckForUpdates() {
         return checkForUpdates;
     }
@@ -89,4 +86,8 @@ public class PacketEventsSettings {
     public boolean shouldInjectEarly() {
         return injectEarly;
     }
+
+    public int getPacketHandlingThreadCount() {
+        return packetHandlingThreadCount;
+    }
 }

src/main/java/io/github/retrooper/packetevents/updatechecker/UpdateChecker.java

@@ -37,30 +37,31 @@ import java.net.URLConnection;
 
 public class UpdateChecker {
     public void handleUpdate() {
+        inform("Checking for an update, please wait...");
         PEVersion localVersion = PacketEvents.getVersion();
         try {
             String line = readLatestVersion();
             PEVersion newVersion = new PEVersion(line);
             if (localVersion.isOlder(newVersion)) {
-                inform("[PacketEvents] There is an update available for the PacketEvents API! (" + newVersion.toString() + ")");
+                inform("There is an update available for the PacketEvents API! Your build: (" + localVersion.toString() + ") | Update: (" + newVersion.toString() + ")");
             }
             else if(localVersion.equals(newVersion)) {
-                inform("[PacketEvents] You are on the latest released version of PacketEvents. (" + newVersion.toString() + ")");
+                inform("You are on the latest released version of PacketEvents. Your build: (" + newVersion.toString() + ")");
             }
             else if(localVersion.isNewer(newVersion)) {
-                inform("[PacketEvents] You are on a dev or pre released build of PacketEvents. Your build: (" + localVersion.toString() + ") | Last released build: (" + newVersion.toString() + ")");
+                inform("You are on a dev or pre released build of PacketEvents. Your build: (" + localVersion.toString() + ") | Last released build: (" + newVersion.toString() + ")");
             }
-        } catch (IOException ignored) {
-            report("[PacketEvents] We failed to find the latest released version of PacketEvents. Your build: ("  + localVersion.toString() + ")");
+        } catch (IOException exception) {
+            report("We failed to find the latest released version of PacketEvents. Your build: ("  + localVersion.toString() + ")");
         }
     }
 
     private void inform(String message) {
-        Bukkit.getLogger().info(message);
+        Bukkit.getLogger().info("[PacketEvents] " + message);
     }
 
     private void report(String message) {
-        Bukkit.getLogger().info(ChatColor.DARK_RED + message);
+        Bukkit.getLogger().info(ChatColor.DARK_RED + "[PacketEvents] " + message);
     }
 
     private String readLatestVersion() throws IOException {
@@ -68,7 +69,6 @@ public class UpdateChecker {
         connection.addRequestProperty("User-Agent", "Mozilla/4.0");
 
         BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
-
         return reader.readLine();
     }
 }

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

@@ -1,42 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.utils;
-
-import org.bukkit.Location;
-import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
-import org.bukkit.util.BlockIterator;
-
-public class BlockIteratorUtils {
-    public static Block getBlockLookingAt(final Player player, final int distance) {
-        final Location location = player.getEyeLocation();
-        final BlockIterator blocksToAdd = new BlockIterator(location, 0.0D, distance);
-        Block block = null;
-        while (blocksToAdd.hasNext()) {
-            block = blocksToAdd.next();
-        }
-        return block;
-    }
-}

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

@@ -25,6 +25,7 @@
 package io.github.retrooper.packetevents.utils.entityfinder;
 
 import io.github.retrooper.packetevents.annotations.Nullable;
+import io.github.retrooper.packetevents.exceptions.PacketEventsNMSCachedEntityNotFoundException;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
 import io.github.retrooper.packetevents.utils.server.ServerVersion;
 import org.bukkit.Bukkit;
@@ -72,7 +73,7 @@ public final class EntityFinderUtils {
                 return entity;
             }
         }
-        return null;
+        throw new PacketEventsNMSCachedEntityNotFoundException(id);
     }
 
     /**
@@ -88,7 +89,7 @@ public final class EntityFinderUtils {
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
-        return null;
+        throw new PacketEventsNMSCachedEntityNotFoundException(id);
     }
 
     public static Object getNMSEntityByIdWithWorld(final World world, final int id) {
@@ -112,6 +113,9 @@ public final class EntityFinderUtils {
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
+        if(nmsEntity == null) {
+            throw new PacketEventsNMSCachedEntityNotFoundException(id);
+        }
         return nmsEntity;
     }
 
@@ -133,7 +137,7 @@ public final class EntityFinderUtils {
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }
-        return null;
+        throw new PacketEventsNMSCachedEntityNotFoundException(id);
     }
 
     /**

src/main/java/io/github/retrooper/packetevents/utils/gameprofile/WrappedGameProfile.java

@@ -61,9 +61,7 @@ public class WrappedGameProfile {
                     return false;
                 }
             }
-            return true;
-        } else {
-            return true;
         }
+        return true;
     }
 }

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

@@ -49,8 +49,12 @@ public final class NMSUtils {
     public static String nettyPrefix = "io.netty";
     public static Class<?> nmsEntityClass, minecraftServerClass, craftWorldClass, playerInteractManagerClass, entityPlayerClass, playerConnectionClass, craftServerClass,
             craftPlayerClass, serverConnectionClass, craftEntityClass,
-            craftItemStack, nmsItemStackClass, networkManagerClass, nettyChannelClass, gameProfileClass, iChatBaseComponentClass;
-    private static Method craftWorldGetHandle, getCraftWorldHandleMethod, getServerConnection, getCraftPlayerHandle, getCraftEntityHandle, asBukkitCopy;
+            craftItemStack, nmsItemStackClass, networkManagerClass, nettyChannelClass, gameProfileClass, iChatBaseComponentClass,
+            blockPosClass, enumDirectionClass;
+    private static Method craftWorldGetHandle;
+    private static Method getCraftPlayerHandle;
+    private static Method getCraftEntityHandle;
+    private static Method asBukkitCopy;
     private static Field entityPlayerPingField, playerConnectionField;
 
     public static final HashMap<UUID, Object> channelCache = new HashMap<>();
@@ -90,13 +94,12 @@ public final class NMSUtils {
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
         }
-
+        blockPosClass = NMSUtils.getNMSClassWithoutException("BlockPosition");
+        enumDirectionClass = NMSUtils.getNMSClassWithoutException("EnumDirection");
         //METHODS
         try {
-            getCraftWorldHandleMethod = craftWorldClass.getMethod("getHandle");
             getCraftPlayerHandle = craftPlayerClass.getMethod("getHandle");
             getCraftEntityHandle = craftEntityClass.getMethod("getHandle");
-            getServerConnection = minecraftServerClass.getMethod("getServerConnection");
             asBukkitCopy = craftItemStack.getMethod("asBukkitCopy", nmsItemStackClass);
             craftWorldGetHandle = craftWorldClass.getMethod("getHandle");
         } catch (NoSuchMethodException e) {

src/main/java/io/github/retrooper/packetevents/utils/player/ClientVersion.java

@@ -24,8 +24,6 @@
 
 package io.github.retrooper.packetevents.utils.player;
 
-import io.github.retrooper.packetevents.PacketEvents;
-
 public enum ClientVersion {
     LOWER_THAN_SUPPORTED_VERSIONS(4),
     v_1_7_10(5),

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

@@ -26,10 +26,8 @@ package io.github.retrooper.packetevents.utils.player;
 
 import io.github.retrooper.packetevents.PacketEvents;
 import io.github.retrooper.packetevents.event.impl.PlayerEjectEvent;
-import io.github.retrooper.packetevents.packetmanager.netty.NettyPacketManager;
 import io.github.retrooper.packetevents.packetwrappers.SendableWrapper;
 import io.github.retrooper.packetevents.utils.nms.NMSUtils;
-import io.github.retrooper.packetevents.utils.versionlookup.VersionLookupUtils;
 import org.bukkit.entity.Player;
 
 import java.util.HashMap;

src/main/java/io/github/retrooper/packetevents/utils/protocollib/ProtocolLibAPIListener.java

@@ -1,143 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.utils.protocollib;
-
-import com.comphenix.protocol.PacketType;
-import com.comphenix.protocol.ProtocolLibrary;
-import com.comphenix.protocol.events.ListenerPriority;
-import com.comphenix.protocol.events.PacketAdapter;
-import com.comphenix.protocol.events.PacketEvent;
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.event.PacketListener;
-import io.github.retrooper.packetevents.event.annotation.PacketHandler;
-import io.github.retrooper.packetevents.event.impl.PacketReceiveEvent;
-import io.github.retrooper.packetevents.event.impl.PacketSendEvent;
-import io.github.retrooper.packetevents.event.priority.PacketEventPriority;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.concurrent.ConcurrentLinkedQueue;
-
-public class ProtocolLibAPIListener {
-    public static void registerProtocolLibListener(PacketListener listener, ConcurrentLinkedQueue<Method> methods) {
-        if (ProtocolLibUtils.isAvailable()) {
-            for (Method m : methods) {
-                if (m.getParameterTypes()[0].equals(PacketReceiveEvent.class)) {
-                    PacketHandler annotation = m.getAnnotation(PacketHandler.class);
-                    ListenerPriority priority;
-                    switch (annotation.priority()) {
-                        case PacketEventPriority.LOWEST:
-                            priority = ListenerPriority.LOWEST;
-                            break;
-                        case PacketEventPriority.LOW:
-                            priority = ListenerPriority.LOW;
-                            break;
-                        case PacketEventPriority.HIGH:
-                            priority = ListenerPriority.HIGH;
-                            break;
-                        case PacketEventPriority.HIGHEST:
-                            priority = ListenerPriority.HIGHEST;
-                            break;
-                        case PacketEventPriority.MONITOR:
-                            priority = ListenerPriority.MONITOR;
-                            break;
-                        default:
-                            priority = ListenerPriority.NORMAL;
-                            break;
-                    }
-                    Set<PacketType> clientValues = new HashSet<>();
-                    for(PacketType type : PacketType.Play.Client.getInstance().values()) {
-                        if(type.isSupported()) {
-                            clientValues.add(type);
-                        }
-                    }
-                    ProtocolLibrary.getProtocolManager().
-                            addPacketListener(new PacketAdapter(PacketEvents.getPlugins().get(0),
-                                    priority, clientValues) {
-                                @Override
-                                public void onPacketReceiving(PacketEvent event) {
-                                    event.setReadOnly(false);
-                                    PacketReceiveEvent receiveEvent = new PacketReceiveEvent(event.getPlayer(), event.getPacket().getHandle());
-                                    try {
-                                        m.invoke(listener, receiveEvent);
-                                    } catch (IllegalAccessException | InvocationTargetException e) {
-                                        e.printStackTrace();
-                                    }
-                                    event.setCancelled(receiveEvent.isCancelled());
-                                }
-                            });
-                } else if (m.getParameterTypes()[0].equals(PacketSendEvent.class)) {
-                    PacketHandler annotation = m.getAnnotation(PacketHandler.class);
-                    ListenerPriority priority;
-                    switch (annotation.priority()) {
-                        case PacketEventPriority.LOWEST:
-                            priority = ListenerPriority.LOWEST;
-                            break;
-                        case PacketEventPriority.LOW:
-                            priority = ListenerPriority.LOW;
-                            break;
-                        case PacketEventPriority.HIGH:
-                            priority = ListenerPriority.HIGH;
-                            break;
-                        case PacketEventPriority.HIGHEST:
-                            priority = ListenerPriority.HIGHEST;
-                            break;
-                        case PacketEventPriority.MONITOR:
-                            priority = ListenerPriority.MONITOR;
-                            break;
-                        default:
-                            priority = ListenerPriority.NORMAL;
-                            break;
-                    }
-                    Set<PacketType> serverValues = new HashSet<>();
-                    for(PacketType serverType : PacketType.Play.Server.getInstance().values()) {
-                        if(serverType.isSupported()) {
-                            serverValues.add(serverType);
-                        }
-                    }
-
-
-                    ProtocolLibrary.getProtocolManager().
-                            addPacketListener(new PacketAdapter(PacketEvents.getPlugins().get(0),
-                                    priority, serverValues) {
-                                @Override
-                                public void onPacketSending(PacketEvent event) {
-                                    event.setReadOnly(false);
-                                    PacketSendEvent sendEvent = new PacketSendEvent(event.getPlayer(), event.getPacket().getHandle());
-                                    try {
-                                        m.invoke(listener, sendEvent);
-                                    } catch (IllegalAccessException | InvocationTargetException e) {
-                                        e.printStackTrace();
-                                    }
-                                    event.setCancelled(sendEvent.isCancelled());
-                                }
-                            });
-                }
-            }
-        }
-    }
-}

src/main/java/io/github/retrooper/packetevents/utils/reflection/ClassUtil.java

@@ -28,7 +28,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 public class ClassUtil {
-    private static final Map<String, String> classSimpleNameCache = new HashMap<String, String>();
+    private static final Map<String, String> classSimpleNameCache = new HashMap<>();
 
     public static String getClassSimpleName(Class<?> cls) {
         String simpleClassName = classSimpleNameCache.get(cls.getName());

src/main/java/io/github/retrooper/packetevents/utils/server/PEVersion.java

@@ -48,13 +48,7 @@ public class PEVersion {
         //1.2.3.4
         text += ".";
 
-        int dotCount = 0;
         char[] chars = text.toCharArray();
-        for (char c : chars) {
-            if (c == '.') {
-                dotCount++;
-            }
-        }
 
         //1.2.3.4.
         int arrayIndex = 0;

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

@@ -26,9 +26,7 @@ package io.github.retrooper.packetevents.utils.vector;
 
 public class Vector3i {
     public int x, y, z;
-    public Vector3i() {
-
-    }
+    public Vector3i() {}
 
     public Vector3i(int x, int y, int z) {
         this.x = x;

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

@@ -1,76 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2020 retrooper
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-package io.github.retrooper.packetevents.utils.versionlookup;
-
-import io.github.retrooper.packetevents.PacketEvents;
-import io.github.retrooper.packetevents.utils.protocolsupport.ProtocolSupportUtils;
-import io.github.retrooper.packetevents.utils.server.ServerVersion;
-import io.github.retrooper.packetevents.utils.v_1_7_10.ProtocolVersionAccessor_v_1_7;
-import io.github.retrooper.packetevents.utils.viaversion.ViaUtils;
-import org.bukkit.entity.Player;
-
-public class VersionLookupUtils {
-
-    private static byte protocolAccessMode = -2;
-
-    public static void handleLoadedDependencies() {
-        protocolAccessMode = (byte) (ViaUtils.isAvailable() ?
-                0 : ProtocolSupportUtils.isAvailable() ?
-                1 : PacketEvents.getAPI().getServerUtils().getVersion() == ServerVersion.v_1_7_10 ?
-                2 : -1);
-    }
-
-    public static boolean hasHandledLoadedDependencies() {
-        return protocolAccessMode != -2;
-    }
-
-    public static boolean isDependencyAvailable() {
-        return ViaUtils.isAvailable()
-                || ProtocolSupportUtils.isAvailable();
-    }
-
-
-    /**
-     * If ViaVersion is present, we get the protocol version with the ViaVersion API.
-     * If ProtocolSupport is present, we get the protocol version with the ProtocolSupport API.
-     * If ProtocolLib is present, we get the protocol version with the ProtocolLib API.
-     * Otherwise return -1
-     *
-     * @param player target player
-     * @return protocol version of the player if ViaVersion or ProtocolSupport or ProtocolLib is present. Otherwise -1
-     */
-    public static int getProtocolVersion(final Player player) {
-        switch (protocolAccessMode) {
-            case 0:
-                return ViaUtils.getProtocolVersion(player);
-            case 1:
-                return ProtocolSupportUtils.getProtocolVersion(player);
-            case 2:
-                return ProtocolVersionAccessor_v_1_7.getProtocolVersion(player);
-            default:
-                return -1;
-        }
-    }
-}