1.12 update

Improved the shield handling (1.9->1.8)

LICENSE

@@ -3,7 +3,7 @@ License:
 
 MIT License
 
-Copyright (c) 2016
+Copyright (c) 2017
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,4 +21,4 @@ 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.
+SOFTWARE.

README.md

@@ -1,6 +1,7 @@
-# ViaVersion 1.0.0 - Spigot, Sponge, BungeeCord
+# ViaVersion 1.1.0 - Spigot, Sponge, BungeeCord
 [![Build Status](https://travis-ci.org/MylesIsCool/ViaVersion.svg?branch=master)](https://travis-ci.org/MylesIsCool/ViaVersion)
 [![Gitter](https://badges.gitter.im/MylesIsCool/ViaVersion.svg)](https://gitter.im/MylesIsCool/ViaVersion)
+[![Discord](https://img.shields.io/badge/chat-on%20discord-blue.svg)](https://viaversion.com/discord)
 
 IRC: [#viaversion](http://irc.spi.gt/iris/?channels=viaversion) on irc.spi.gt for Support.
 
@@ -8,7 +9,7 @@ IRC: [#viaversion](http://irc.spi.gt/iris/?channels=viaversion) on irc.spi.gt fo
 
 Supported Versions:
 
-[![Table] (http://i.imgur.com/SVVhFQ4.png)](http://i.imgur.com/SVVhFQ4.png)
+![Table (http://i.imgur.com/jbrm2Ep.png)](http://i.imgur.com/jbrm2Ep.png)
 
 On Bukkit you may also use ProtocolSupport, but ensure you have the right build for your server version.
 

bukkit/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.3</version>
+        <version>1.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

bukkit/src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java

@@ -253,4 +253,9 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaPlatform {
 
         return platformSpecific;
     }
+
+    @Override
+    public boolean isOldClientsAllowed() {
+        return !protocolSupport; // Use protocolsupport for older clients
+    }
 }

bukkit/src/main/java/us/myles/ViaVersion/bukkit/classgenerator/ClassGenerator.java

@@ -33,8 +33,16 @@ public class ClassGenerator {
                     addSpigotCompatibility(pool, BukkitDecodeHandler.class, decodeSuper);
                     addSpigotCompatibility(pool, BukkitEncodeHandler.class, encodeSuper);
                 } else {
-                    Class decodeSuper = Class.forName(getPSPackage().equals("unknown") ? "protocolsupport.protocol.pipeline.common.PacketDecoder" : getPSPackage() + ".wrapped.WrappedDecoder");
-                    Class encodeSuper = Class.forName(getPSPackage().equals("unknown") ? "protocolsupport.protocol.pipeline.common.PacketEncoder" : getPSPackage() + ".wrapped.WrappedEncoder");
+                    // ProtocolSupport compatibility
+                    Class encodeSuper;
+                    Class decodeSuper;
+                    if (isMultiplatformPS()) {
+                        return;
+                    } else {
+                        String psPackage = getOldPSPackage();
+                        decodeSuper = Class.forName(psPackage.equals("unknown") ? "protocolsupport.protocol.pipeline.common.PacketDecoder" : psPackage + ".wrapped.WrappedDecoder");
+                        encodeSuper = Class.forName(psPackage.equals("unknown") ? "protocolsupport.protocol.pipeline.common.PacketEncoder" : psPackage + ".wrapped.WrappedEncoder");
+                    }
                     // Generate the classes
                     addPSCompatibility(pool, BukkitDecodeHandler.class, decodeSuper);
                     addPSCompatibility(pool, BukkitEncodeHandler.class, encodeSuper);
@@ -110,7 +118,7 @@ public class ClassGenerator {
     }
 
     private static Class addPSCompatibility(ClassPool pool, Class input, Class superclass) {
-        boolean newPS = getPSPackage().equals("unknown");
+        boolean newPS = getOldPSPackage().equals("unknown");
         String newName = "us.myles.ViaVersion.classgenerator.generated." + input.getSimpleName();
 
         try {
@@ -121,8 +129,8 @@ public class ClassGenerator {
 
                 if (!newPS) {
                     // Override setRealEncoder / setRealDecoder
-                    pool.importPackage(getPSPackage());
-                    pool.importPackage(getPSPackage() + ".wrapped");
+                    pool.importPackage(getOldPSPackage());
+                    pool.importPackage(getOldPSPackage() + ".wrapped");
                     if (superclass.getName().endsWith("Decoder")) {
                         // Decoder
                         generated.addMethod(CtMethod.make("public void setRealDecoder(IPacketDecoder dec) {\n" +
@@ -158,7 +166,7 @@ public class ClassGenerator {
         return null;
     }
 
-    public static String getPSPackage() {
+    public static String getOldPSPackage() {
         if (psPackage == null) {
             try {
                 Class.forName("protocolsupport.protocol.core.IPacketDecoder");
@@ -174,4 +182,14 @@ public class ClassGenerator {
         }
         return psPackage;
     }
+
+    public static boolean isMultiplatformPS() {
+        try {
+            Class.forName("protocolsupport.zplatform.impl.spigot.network.pipeline.SpigotPacketEncoder");
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
 }

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitViaInjector.java

@@ -37,14 +37,12 @@ public class BukkitViaInjector implements ViaInjector {
                     // Inject the list
                     List wrapper = new ListWrapper((List) value) {
                         @Override
-                        public synchronized void handleAdd(Object o) {
-                            synchronized (this) {
-                                if (o instanceof ChannelFuture) {
-                                    try {
-                                        injectChannelFuture((ChannelFuture) o);
-                                    } catch (Exception e) {
-                                        e.printStackTrace();
-                                    }
+                        public void handleAdd(Object o) {
+                            if (o instanceof ChannelFuture) {
+                                try {
+                                    injectChannelFuture((ChannelFuture) o);
+                                } catch (Exception e) {
+                                    e.printStackTrace();
                                 }
                             }
                         }

bungee/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.3</version>
+        <version>1.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>us.myles</groupId>
             <artifactId>viaversion-common</artifactId>
-            <version>1.0.3</version>
+            <version>1.1.0</version>
         </dependency>
     </dependencies>
 </project>

bungee/src/main/java/us/myles/ViaVersion/BungeePlugin.java

@@ -155,6 +155,11 @@ public class BungeePlugin extends Plugin implements ViaPlatform, Listener {
         return platformSpecific;
     }
 
+    @Override
+    public boolean isOldClientsAllowed() {
+        return true;
+    }
+
     @EventHandler
     public void onQuit(PlayerDisconnectEvent e) {
         Via.getManager().removePortedClient(e.getPlayer().getUniqueId());

bungee/src/main/java/us/myles/ViaVersion/bungee/handlers/BungeeServerHandler.java

@@ -8,6 +8,7 @@ import net.md_5.bungee.event.EventHandler;
 import net.md_5.bungee.event.EventPriority;
 import us.myles.ViaVersion.api.Pair;
 import us.myles.ViaVersion.api.Via;
+import us.myles.ViaVersion.api.boss.BossBar;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.protocol.Protocol;
 import us.myles.ViaVersion.api.protocol.ProtocolPipeline;
@@ -15,6 +16,7 @@ import us.myles.ViaVersion.api.protocol.ProtocolRegistry;
 import us.myles.ViaVersion.bungee.service.ProtocolDetectorService;
 import us.myles.ViaVersion.bungee.storage.BungeeStorage;
 import us.myles.ViaVersion.protocols.base.ProtocolInfo;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.storage.EntityTracker;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
@@ -79,6 +81,15 @@ public class BungeeServerHandler implements Listener {
 
     public void checkServerChange(ServerConnectedEvent e, UserConnection user) throws Exception {
         if (user == null) return;
+        // Manually hide ViaVersion-created BossBars if the childserver was version 1.8.x (#666)
+        if (user.has(EntityTracker.class)) {
+            EntityTracker tracker = user.get(EntityTracker.class);
+
+            if (tracker.getBossBarMap() != null)
+                for (BossBar bar : tracker.getBossBarMap().values())
+                    bar.hide();
+        }
+        // Handle server/version change
         if (user.has(BungeeStorage.class)) {
             BungeeStorage storage = user.get(BungeeStorage.class);
             ProxiedPlayer player = storage.getPlayer();

bungee/src/main/java/us/myles/ViaVersion/bungee/platform/BungeeViaLoader.java

@@ -9,11 +9,13 @@ import us.myles.ViaVersion.bungee.handlers.BungeeServerHandler;
 import us.myles.ViaVersion.bungee.listeners.ElytraPatch;
 import us.myles.ViaVersion.bungee.listeners.MainHandPatch;
 import us.myles.ViaVersion.bungee.listeners.UpdateListener;
+import us.myles.ViaVersion.bungee.providers.BungeeBossBarProvider;
 import us.myles.ViaVersion.bungee.providers.BungeeEntityIdProvider;
 import us.myles.ViaVersion.bungee.providers.BungeeMovementTransmitter;
 import us.myles.ViaVersion.bungee.providers.BungeeVersionProvider;
 import us.myles.ViaVersion.bungee.service.ProtocolDetectorService;
 import us.myles.ViaVersion.protocols.base.VersionProvider;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.BossBarProvider;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.EntityIdProvider;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.MovementTransmitterProvider;
 
@@ -36,6 +38,8 @@ public class BungeeViaLoader implements ViaPlatformLoader {
         Via.getManager().getProviders().use(MovementTransmitterProvider.class, new BungeeMovementTransmitter());
         Via.getManager().getProviders().use(VersionProvider.class, new BungeeVersionProvider());
         Via.getManager().getProviders().use(EntityIdProvider.class, new BungeeEntityIdProvider());
+        Via.getManager().getProviders().use(BossBarProvider.class, new BungeeBossBarProvider());
+
         if (plugin.getConf().getBungeePingInterval() > 0) {
             plugin.getProxy().getScheduler().schedule(plugin, new ProtocolDetectorService(plugin), 0, plugin.getConf().getBungeePingInterval(), TimeUnit.SECONDS);
         }

bungee/src/main/java/us/myles/ViaVersion/bungee/providers/BungeeBossBarProvider.java

@@ -0,0 +1,30 @@
+package us.myles.ViaVersion.bungee.providers;
+
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.bungee.storage.BungeeStorage;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.BossBarProvider;
+
+import java.util.UUID;
+
+public class BungeeBossBarProvider extends BossBarProvider {
+    @Override
+    public void handleAdd(UserConnection user, UUID barUUID) {
+        if (user.has(BungeeStorage.class)) {
+            BungeeStorage storage = user.get(BungeeStorage.class);
+            // Check if bossbars are supported by bungee, static maybe
+            if (storage.getBossbar() != null) {
+                storage.getBossbar().add(barUUID);
+            }
+        }
+    }
+
+    @Override
+    public void handleRemove(UserConnection user, UUID barUUID) {
+        if (user.has(BungeeStorage.class)) {
+            BungeeStorage storage = user.get(BungeeStorage.class);
+            if (storage.getBossbar() != null) {
+                storage.getBossbar().remove(barUUID);
+            }
+        }
+    }
+}

bungee/src/main/java/us/myles/ViaVersion/bungee/storage/BungeeStorage.java

@@ -6,15 +6,43 @@ import net.md_5.bungee.api.connection.ProxiedPlayer;
 import us.myles.ViaVersion.api.data.StoredObject;
 import us.myles.ViaVersion.api.data.UserConnection;
 
+import java.lang.reflect.Field;
+import java.util.Set;
+import java.util.UUID;
+
 @Data
 @EqualsAndHashCode(callSuper = true)
 public class BungeeStorage extends StoredObject {
+    private static Field bossField;
+
+    static {
+        try {
+            Class<?> user = Class.forName("net.md_5.bungee.UserConnection");
+            bossField = user.getDeclaredField("sentBossBars");
+            bossField.setAccessible(true);
+        } catch (ClassNotFoundException e) {
+            // Not supported *shrug* probably modified
+        } catch (NoSuchFieldException e) {
+            // Not supported, old version probably
+        }
+    }
+
     private ProxiedPlayer player;
     private String currentServer;
+    private Set<UUID> bossbar;
 
     public BungeeStorage(UserConnection user, ProxiedPlayer player) {
         super(user);
         this.player = player;
         this.currentServer = "";
+
+        // Get bossbar list if it's supported
+        if (bossField != null) {
+            try {
+                bossbar = (Set<UUID>) bossField.get(player);
+            } catch (IllegalAccessException e) {
+                e.printStackTrace();
+            }
+        }
     }
 }

common/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.3</version>
+        <version>1.1.0</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
@@ -13,11 +13,10 @@
     <artifactId>viaversion-common</artifactId>
     <dependencies>
         <!-- Snake YAML -->
-
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.18-SNAPSHOT</version>
+            <version>1.18</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>

common/src/main/java/us/myles/ViaVersion/ViaManager.java

@@ -46,6 +46,8 @@ public class ViaManager {
         // Check for updates
         if (platform.getConf().isCheckForUpdates())
             UpdateUtil.sendUpdateMessage();
+        // Force class load
+        ProtocolRegistry.getSupportedVersions();
         // Inject
         try {
             injector.inject();

common/src/main/java/us/myles/ViaVersion/api/boss/BossBar.java

@@ -167,4 +167,11 @@ public abstract class BossBar<T> {
      * @return visibility changable with show() and hide()
      */
     public abstract boolean isVisible();
+
+    /**
+     * Get the UUID of this bossbar
+     *
+     * @return Unique Id for this bossbar
+     */
+    public abstract UUID getId();
 }

common/src/main/java/us/myles/ViaVersion/api/entities/Entity1_11Types.java

@@ -43,7 +43,6 @@ public class Entity1_11Types {
         PRIMED_TNT(20, ENTITY),
         FALLING_BLOCK(21, ENTITY),
         FIREWORK(22, ENTITY),
-        TIPPED_ARROW(23, ARROW),
         SPECTRAL_ARROW(24, ARROW),
         SHULKER_BULLET(25, ENTITY),
         DRAGON_FIREBALL(26, FIREBALL),
@@ -194,7 +193,7 @@ public class Entity1_11Types {
         MINECART(10, EntityType.MINECART_ABSTRACT),
         TNT_PRIMED(50, EntityType.PRIMED_TNT),
         ENDER_CRYSTAL(51, EntityType.ENDER_CRYSTAL),
-        TIPPED_ARROW(60, EntityType.TIPPED_ARROW),
+        TIPPED_ARROW(60, EntityType.ARROW),
         SNOWBALL(61, EntityType.SNOWBALL),
         EGG(62, EntityType.EGG),
         FIREBALL(63, EntityType.FIREBALL),

common/src/main/java/us/myles/ViaVersion/api/minecraft/chunks/Chunk.java

@@ -1,6 +1,6 @@
 package us.myles.ViaVersion.api.minecraft.chunks;
 
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 
 import java.util.List;
 

common/src/main/java/us/myles/ViaVersion/api/minecraft/chunks/ChunkSection.java

@@ -3,6 +3,10 @@ package us.myles.ViaVersion.api.minecraft.chunks;
 import io.netty.buffer.ByteBuf;
 
 public interface ChunkSection {
+    int getBlock(int x, int y, int z);
+
+    void setBlock(int x, int y, int z, int type, int data);
+
     int getBlockId(int x, int y, int z);
 
     void writeBlocks(ByteBuf output) throws Exception;

common/src/main/java/us/myles/ViaVersion/api/minecraft/item/Item.java

@@ -1,7 +1,7 @@
 package us.myles.ViaVersion.api.minecraft.item;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import lombok.*;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 
 @Getter
 @Setter

common/src/main/java/us/myles/ViaVersion/api/minecraft/metadata/types/MetaType1_12.java

@@ -0,0 +1,34 @@
+package us.myles.ViaVersion.api.minecraft.metadata.types;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import us.myles.ViaVersion.api.minecraft.metadata.MetaType;
+import us.myles.ViaVersion.api.type.Type;
+
+@RequiredArgsConstructor
+@Getter
+public enum MetaType1_12 implements MetaType {
+    Byte(0, Type.BYTE),
+    VarInt(1, Type.VAR_INT),
+    Float(2, Type.FLOAT),
+    String(3, Type.STRING),
+    Chat(4, Type.STRING),
+    Slot(5, Type.ITEM),
+    Boolean(6, Type.BOOLEAN),
+    Vector3F(7, Type.ROTATION),
+    Position(8, Type.POSITION),
+    OptPosition(9, Type.OPTIONAL_POSITION),
+    Direction(10, Type.VAR_INT),
+    OptUUID(11, Type.OPTIONAL_UUID),
+    BlockID(12, Type.VAR_INT),
+    NBTTag(13, Type.NBT),
+    Discontinued(99, null);
+
+    private final int typeID;
+    private final Type type;
+
+    public static MetaType1_12 byId(int id) {
+        return values()[id];
+    }
+
+}

common/src/main/java/us/myles/ViaVersion/api/platform/ViaPlatform.java

@@ -140,4 +140,12 @@ public interface ViaPlatform<T> {
      * @return The json data
      */
     JsonObject getDump();
+
+    /**
+     * Get if older clients are allowed to be used using ViaVersion.
+     * (Only 1.9 on 1.9.2 server is supported by ViaVersion alone)
+     *
+     * @return True if allowed
+     */
+    boolean isOldClientsAllowed();
 }

common/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolRegistry.java

@@ -8,6 +8,7 @@ import us.myles.ViaVersion.protocols.base.BaseProtocol;
 import us.myles.ViaVersion.protocols.protocol1_10to1_9_3.Protocol1_10To1_9_3_4;
 import us.myles.ViaVersion.protocols.protocol1_11_1to1_11.Protocol1_11_1To1_11;
 import us.myles.ViaVersion.protocols.protocol1_11to1_10.Protocol1_11To1_10;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.Protocol1_12To1_11_1;
 import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.Protocol1_9_1_2TO1_9_3_4;
 import us.myles.ViaVersion.protocols.protocol1_9_1to1_9.Protocol1_9_1TO1_9;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.Protocol1_9_3TO1_9_1_2;
@@ -38,9 +39,11 @@ public class ProtocolRegistry {
         registerProtocol(new Protocol1_9_1_2TO1_9_3_4(), Arrays.asList(ProtocolVersion.v1_9_1.getId(), ProtocolVersion.v1_9_2.getId()), ProtocolVersion.v1_9_3.getId());
         registerProtocol(new Protocol1_10To1_9_3_4(), Collections.singletonList(ProtocolVersion.v1_10.getId()), ProtocolVersion.v1_9_3.getId());
 
-        registerProtocol(new Protocol1_11To1_10(), Arrays.asList(ProtocolVersion.v1_11.getId()), ProtocolVersion.v1_10.getId());
-        registerProtocol(new Protocol1_11_1To1_11(), Arrays.asList(ProtocolVersion.v1_11_1.getId()), ProtocolVersion.v1_11.getId());
+        registerProtocol(new Protocol1_11To1_10(), Collections.singletonList(ProtocolVersion.v1_11.getId()), ProtocolVersion.v1_10.getId());
+        registerProtocol(new Protocol1_11_1To1_11(), Collections.singletonList(ProtocolVersion.v1_11_1.getId()), ProtocolVersion.v1_11.getId());
 
+        // Snapshot
+        registerProtocol(new Protocol1_12To1_11_1(), Collections.singletonList(ProtocolVersion.v1_12.getId()), ProtocolVersion.v1_11_1.getId());
     }
 
     /**

common/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java

@@ -29,6 +29,7 @@ public class ProtocolVersion {
     public static final ProtocolVersion v1_10;
     public static final ProtocolVersion v1_11;
     public static final ProtocolVersion v1_11_1;
+    public static final ProtocolVersion v1_12;
     public static final ProtocolVersion unknown;
 
     private final int id;
@@ -54,6 +55,7 @@ public class ProtocolVersion {
         register(v1_10 = new ProtocolVersion(210, "1.10"));
         register(v1_11 = new ProtocolVersion(315, "1.11"));
         register(v1_11_1 = new ProtocolVersion(316, "1.11.1"));
+        register(v1_12 = new ProtocolVersion(335, "1.12"));
         register(unknown = new ProtocolVersion(-1, "UNKNOWN"));
     }
 

common/src/main/java/us/myles/ViaVersion/api/type/Type.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.api.type;
 
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import lombok.Getter;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.minecraft.EulerAngle;
 import us.myles.ViaVersion.api.minecraft.Position;
 import us.myles.ViaVersion.api.minecraft.Vector;

common/src/main/java/us/myles/ViaVersion/api/type/types/minecraft/NBTType.java

@@ -1,14 +1,16 @@
 package us.myles.ViaVersion.api.type.types.minecraft;
 
+import com.github.steveice10.opennbt.NBTIO;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.google.common.base.Preconditions;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufInputStream;
 import io.netty.buffer.ByteBufOutputStream;
-import org.spacehq.opennbt.NBTIO;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.type.Type;
 
+import java.io.DataInput;
 import java.io.DataInputStream;
+import java.io.DataOutput;
 import java.io.DataOutputStream;
 
 public class NBTType extends Type<CompoundTag> {
@@ -28,7 +30,7 @@ public class NBTType extends Type<CompoundTag> {
             buffer.readerIndex(readerIndex);
             ByteBufInputStream bytebufStream = new ByteBufInputStream(buffer);
             try (DataInputStream dataInputStream = new DataInputStream(bytebufStream)) {
-                return (CompoundTag) NBTIO.readTag(dataInputStream);
+                return (CompoundTag) NBTIO.readTag((DataInput) dataInputStream);
             }
         }
     }
@@ -41,7 +43,7 @@ public class NBTType extends Type<CompoundTag> {
             ByteBufOutputStream bytebufStream = new ByteBufOutputStream(buffer);
             DataOutputStream dataOutputStream = new DataOutputStream(bytebufStream);
 
-            NBTIO.writeTag(dataOutputStream, object);
+            NBTIO.writeTag((DataOutput) dataOutputStream, object);
 
             dataOutputStream.close();
         }

common/src/main/java/us/myles/ViaVersion/boss/CommonBoss.java

@@ -1,16 +1,16 @@
 package us.myles.ViaVersion.boss;
 
 import com.google.common.base.Preconditions;
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
 import lombok.Getter;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
+import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.boss.BossBar;
 import us.myles.ViaVersion.api.boss.BossColor;
 import us.myles.ViaVersion.api.boss.BossFlag;
 import us.myles.ViaVersion.api.boss.BossStyle;
+import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.protocol.ProtocolVersion;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.Protocol1_9TO1_8;
@@ -80,8 +80,10 @@ public abstract class CommonBoss<T> extends BossBar<T> {
     public BossBar addPlayer(UUID player) {
         if (!players.contains(player)) {
             players.add(player);
-            if (visible)
-                sendPacket(player, getPacket(CommonBoss.UpdateAction.ADD));
+            if (visible) {
+                UserConnection user = Via.getManager().getConnection(player);
+                sendPacket(player, getPacket(CommonBoss.UpdateAction.ADD, user));
+            }
         }
         return this;
     }
@@ -90,7 +92,8 @@ public abstract class CommonBoss<T> extends BossBar<T> {
     public BossBar removePlayer(UUID uuid) {
         if (players.contains(uuid)) {
             players.remove(uuid);
-            sendPacket(uuid, getPacket(UpdateAction.REMOVE));
+            UserConnection user = Via.getManager().getConnection(uuid);
+            sendPacket(uuid, getPacket(UpdateAction.REMOVE, user));
         }
         return this;
     }
@@ -138,6 +141,11 @@ public abstract class CommonBoss<T> extends BossBar<T> {
         return visible;
     }
 
+    @Override
+    public UUID getId() {
+        return uuid;
+    }
+
     private void setVisible(boolean value) {
         if (visible != value) {
             visible = value;
@@ -147,52 +155,55 @@ public abstract class CommonBoss<T> extends BossBar<T> {
 
     private void sendPacket(UpdateAction action) {
         for (UUID uuid : new ArrayList<>(players)) {
-            ByteBuf buf = getPacket(action);
-            sendPacket(uuid, buf);
+            UserConnection connection = Via.getManager().getConnection(uuid);
+            PacketWrapper wrapper = getPacket(action, connection);
+            sendPacket(uuid, wrapper);
         }
     }
 
-    private void sendPacket(UUID uuid, ByteBuf buf) {
+    private void sendPacket(UUID uuid, PacketWrapper wrapper) {
         if (!Via.getAPI().isPorted(uuid) || !(Via.getAPI().getPlayerVersion(uuid) >= ProtocolVersion.v1_9.getId())) {
             players.remove(uuid);
-            buf.release();
             return;
         }
-        Via.getAPI().sendRawPacket(uuid, buf);
+        try {
+            wrapper.send(Protocol1_9TO1_8.class);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
     }
 
-    private ByteBuf getPacket(UpdateAction action) {
+    private PacketWrapper getPacket(UpdateAction action, UserConnection connection) {
         try {
-            ByteBuf buf = Unpooled.buffer();
-            Type.VAR_INT.write(buf, 0x0C); // Boss bar packet
-            Type.UUID.write(buf, uuid);
-            Type.VAR_INT.write(buf, action.getId());
+            PacketWrapper wrapper = new PacketWrapper(0x0C, null, connection); // TODO don't use fixed packet ids for future support
+            wrapper.write(Type.UUID, uuid);
+            wrapper.write(Type.VAR_INT, action.getId());
             switch (action) {
                 case ADD:
-                    Type.STRING.write(buf, fixJson(title));
-                    buf.writeFloat(health);
-                    Type.VAR_INT.write(buf, color.getId());
-                    Type.VAR_INT.write(buf, style.getId());
-                    buf.writeByte(flagToBytes());
+                    Protocol1_9TO1_8.FIX_JSON.write(wrapper, title);
+                    wrapper.write(Type.FLOAT, health);
+                    wrapper.write(Type.VAR_INT, color.getId());
+                    wrapper.write(Type.VAR_INT, style.getId());
+                    wrapper.write(Type.BYTE, (byte) flagToBytes());
                     break;
                 case REMOVE:
                     break;
                 case UPDATE_HEALTH:
-                    buf.writeFloat(health);
+                    wrapper.write(Type.FLOAT, health);
                     break;
                 case UPDATE_TITLE:
-                    Type.STRING.write(buf, fixJson(title));
+                    Protocol1_9TO1_8.FIX_JSON.write(wrapper, title);
                     break;
                 case UPDATE_STYLE:
-                    Type.VAR_INT.write(buf, color.getId());
-                    Type.VAR_INT.write(buf, style.getId());
+                    wrapper.write(Type.VAR_INT, color.getId());
+                    wrapper.write(Type.VAR_INT, style.getId());
                     break;
                 case UPDATE_FLAGS:
-                    buf.writeByte(flagToBytes());
+                    wrapper.write(Type.BYTE, (byte) flagToBytes());
                     break;
             }
 
-            return buf;
+            return wrapper;
         } catch (Exception e) {
             e.printStackTrace();
         }
@@ -206,10 +217,6 @@ public abstract class CommonBoss<T> extends BossBar<T> {
         return bitmask;
     }
 
-    private String fixJson(String text) {
-        return Protocol1_9TO1_8.fixJson(text);
-    }
-
     @RequiredArgsConstructor
     @Getter
     private enum UpdateAction {

common/src/main/java/us/myles/ViaVersion/commands/defaultsubs/DumpSubCmd.java

@@ -1,5 +1,6 @@
 package us.myles.ViaVersion.commands.defaultsubs;
 
+import com.google.common.io.CharStreams;
 import com.google.gson.JsonObject;
 import net.md_5.bungee.api.ChatColor;
 import us.myles.ViaVersion.api.Via;
@@ -10,6 +11,7 @@ import us.myles.ViaVersion.dump.DumpTemplate;
 import us.myles.ViaVersion.dump.VersionInfo;
 import us.myles.ViaVersion.util.GsonUtil;
 
+import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.InvalidObjectException;
 import java.io.OutputStream;
@@ -50,35 +52,66 @@ public class DumpSubCmd extends ViaSubCommand {
         Via.getPlatform().runAsync(new Runnable() {
             @Override
             public void run() {
-                try {
-                    HttpURLConnection con = (HttpURLConnection) new URL("http://hastebin.com/documents").openConnection();
 
-                    con.setRequestProperty("Content-Type", "text/plain");
+                HttpURLConnection con;
+                try {
+                    con = (HttpURLConnection) new URL("https://api.github.com/gists").openConnection();
+                } catch (IOException e) {
+                    sender.sendMessage(ChatColor.RED + "Failed to dump, please check the console for more information");
+                    Via.getPlatform().getLogger().log(Level.WARNING, "Could not paste ViaVersion dump to Gist", e);
+                    return;
+                }
+                try {
+                    con.setRequestProperty("Content-Type", "application/json");
+                    con.addRequestProperty("User-Agent", "ViaVersion");
                     con.setRequestMethod("POST");
                     con.setDoOutput(true);
 
                     OutputStream out = con.getOutputStream();
-                    out.write(GsonUtil.getGsonBuilder().setPrettyPrinting().create().toJson(template).getBytes(Charset.forName("UTF-8")));
+                    String contents = GsonUtil.getGsonBuilder().setPrettyPrinting().create().toJson(template);
+                    // Create payload
+                    JsonObject payload = new JsonObject();
+                    payload.addProperty("description", "ViaVersion Dump");
+                    payload.addProperty("public", "false");
+                    // Create file contents
+                    JsonObject file = new JsonObject();
+                    file.addProperty("content", contents);
+                    // Create file list
+                    JsonObject files = new JsonObject();
+                    files.add("dump.json", file);
+                    payload.add("files", files);
+                    // Write to stream
+                    out.write(GsonUtil.getGson().toJson(payload).getBytes(Charset.forName("UTF-8")));
                     out.close();
 
-                    JsonObject output = GsonUtil.getGson().fromJson(new InputStreamReader(con.getInputStream()), JsonObject.class);
+                    String rawOutput = CharStreams.toString(new InputStreamReader(con.getInputStream()));
                     con.getInputStream().close();
+                    JsonObject output = GsonUtil.getGson().fromJson(rawOutput, JsonObject.class);
 
-                    if (!output.has("key"))
-                        throw new InvalidObjectException("Key is not given in Hastebin output");
 
-                    sender.sendMessage(ChatColor.GREEN + "We've made a dump with useful information, report your issue and provide this url: " + getUrl(output.get("key").getAsString()));
+                    if (!output.has("html_url"))
+                        throw new InvalidObjectException("URL is not given in Gist output");
+
+                    sender.sendMessage(ChatColor.GREEN + "We've made a dump with useful information, report your issue and provide this url: " + output.get("html_url").getAsString());
                 } catch (Exception e) {
                     sender.sendMessage(ChatColor.RED + "Failed to dump, please check the console for more information");
-                    Via.getPlatform().getLogger().log(Level.WARNING, "Could not paste ViaVersion dump to Hastebin", e);
+                    try {
+                        if (con.getResponseCode() == 403) {
+                            // Ensure 403 is due to rate limit being hit
+                            if("0".equals(con.getHeaderField("X-RateLimit-Remaining"))) {
+                                Via.getPlatform().getLogger().log(Level.WARNING, "You may only create 60 dumps per hour, please try again later.");
+                                return;
+                            }
+                        }
+                        Via.getPlatform().getLogger().log(Level.WARNING, "Could not paste ViaVersion dump to Gist", e);
+
+                    } catch (IOException e1) {
+                        Via.getPlatform().getLogger().log(Level.WARNING, "Failed to capture further info", e1);
+                    }
                 }
             }
         });
 
         return true;
     }
-
-    private String getUrl(String id) {
-        return String.format("http://hastebin.com/%s.json", id);
-    }
 }

common/src/main/java/us/myles/ViaVersion/commands/defaultsubs/PPSSubCmd.java

@@ -36,7 +36,7 @@ public class PPSSubCmd extends ViaSubCommand {
             if (!playerVersions.containsKey(playerVersion))
                 playerVersions.put(playerVersion, new HashSet<String>());
             UserConnection uc = Via.getManager().getConnection(p.getUUID());
-            if (uc.getPacketsPerSecond() > -1) {
+            if (uc != null && uc.getPacketsPerSecond() > -1) {
                 playerVersions.get(playerVersion).add(p.getName() + " (" + uc.getPacketsPerSecond() + " PPS)");
                 totalPackets += uc.getPacketsPerSecond();
                 if (uc.getPacketsPerSecond() > max) {

common/src/main/java/us/myles/ViaVersion/protocols/base/BaseProtocol.java

@@ -72,7 +72,12 @@ public class BaseProtocol extends Protocol {
                                 ProtocolRegistry.SERVER_PROTOCOL = protocolVersion;
 
                             int protocol = Via.getManager().getProviders().get(VersionProvider.class).getServerProtocol(wrapper.user());
-                            List<Pair<Integer, Protocol>> protocols = ProtocolRegistry.getProtocolPath(info.getProtocolVersion(), protocol);
+                            List<Pair<Integer, Protocol>> protocols = null;
+
+                            // Only allow newer clients or (1.9.2 on 1.9.4 server if the server supports it)
+                            if (info.getProtocolVersion() >= protocol || Via.getPlatform().isOldClientsAllowed()) {
+                                protocols = ProtocolRegistry.getProtocolPath(info.getProtocolVersion(), protocol);
+                            }
 
                             if (protocols != null) {
                                 if (protocolVersion != 9999) {
@@ -163,7 +168,13 @@ public class BaseProtocol extends Protocol {
                         info.setProtocolVersion(protVer);
                         // Choose the pipe
                         int protocol = Via.getManager().getProviders().get(VersionProvider.class).getServerProtocol(wrapper.user());
-                        List<Pair<Integer, Protocol>> protocols = ProtocolRegistry.getProtocolPath(info.getProtocolVersion(), protocol);
+                        List<Pair<Integer, Protocol>> protocols = null;
+
+                        // Only allow newer clients or (1.9.2 on 1.9.4 server if the server supports it)
+                        if (info.getProtocolVersion() >= protocol || Via.getPlatform().isOldClientsAllowed()) {
+                            protocols = ProtocolRegistry.getProtocolPath(info.getProtocolVersion(), protocol);
+                        }
+
                         ProtocolPipeline pipeline = wrapper.user().get(ProtocolInfo.class).getPipeline();
                         if (protocols != null) {
                             for (Pair<Integer, Protocol> prot : protocols) {

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_11to1_10/EntityIdRewriter.java

@@ -0,0 +1,138 @@
+package us.myles.ViaVersion.protocols.protocol1_11to1_10;
+
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
+import us.myles.ViaVersion.api.minecraft.item.Item;
+
+public class EntityIdRewriter {
+    private static BiMap<String, String> oldToNewNames = HashBiMap.create();
+
+    static {
+        oldToNewNames.put("AreaEffectCloud", "minecraft:area_effect_cloud");
+        oldToNewNames.put("ArmorStand", "minecraft:armor_stand");
+        oldToNewNames.put("Arrow", "minecraft:arrow");
+        oldToNewNames.put("Bat", "minecraft:bat");
+        oldToNewNames.put("Blaze", "minecraft:blaze");
+        oldToNewNames.put("Boat", "minecraft:boat");
+        oldToNewNames.put("CaveSpider", "minecraft:cave_spider");
+        oldToNewNames.put("Chicken", "minecraft:chicken");
+        oldToNewNames.put("Cow", "minecraft:cow");
+        oldToNewNames.put("Creeper", "minecraft:creeper");
+        oldToNewNames.put("Donkey", "minecraft:donkey");
+        oldToNewNames.put("DragonFireball", "minecraft:dragon_fireball");
+        oldToNewNames.put("ElderGuardian", "minecraft:elder_guardian");
+        oldToNewNames.put("EnderCrystal", "minecraft:ender_crystal");
+        oldToNewNames.put("EnderDragon", "minecraft:ender_dragon");
+        oldToNewNames.put("Enderman", "minecraft:enderman");
+        oldToNewNames.put("Endermite", "minecraft:endermite");
+        oldToNewNames.put("EntityHorse", "minecraft:horse");
+        oldToNewNames.put("EyeOfEnderSignal", "minecraft:eye_of_ender_signal");
+        oldToNewNames.put("FallingSand", "minecraft:falling_block");
+        oldToNewNames.put("Fireball", "minecraft:fireball");
+        oldToNewNames.put("FireworksRocketEntity", "minecraft:fireworks_rocket");
+        oldToNewNames.put("Ghast", "minecraft:ghast");
+        oldToNewNames.put("Giant", "minecraft:giant");
+        oldToNewNames.put("Guardian", "minecraft:guardian");
+        oldToNewNames.put("Husk", "minecraft:husk");
+        oldToNewNames.put("Item", "minecraft:item");
+        oldToNewNames.put("ItemFrame", "minecraft:item_frame");
+        oldToNewNames.put("LavaSlime", "minecraft:magma_cube");
+        oldToNewNames.put("LeashKnot", "minecraft:leash_knot");
+        oldToNewNames.put("MinecartChest", "minecraft:chest_minecart");
+        oldToNewNames.put("MinecartCommandBlock", "minecraft:commandblock_minecart");
+        oldToNewNames.put("MinecartFurnace", "minecraft:furnace_minecart");
+        oldToNewNames.put("MinecartHopper", "minecraft:hopper_minecart");
+        oldToNewNames.put("MinecartRideable", "minecraft:minecart");
+        oldToNewNames.put("MinecartSpawner", "minecraft:spawner_minecart");
+        oldToNewNames.put("MinecartTNT", "minecraft:tnt_minecart");
+        oldToNewNames.put("Mule", "minecraft:mule");
+        oldToNewNames.put("MushroomCow", "minecraft:mooshroom");
+        oldToNewNames.put("Ozelot", "minecraft:ocelot");
+        oldToNewNames.put("Painting", "minecraft:painting");
+        oldToNewNames.put("Pig", "minecraft:pig");
+        oldToNewNames.put("PigZombie", "minecraft:zombie_pigman");
+        oldToNewNames.put("PolarBear", "minecraft:polar_bear");
+        oldToNewNames.put("PrimedTnt", "minecraft:tnt");
+        oldToNewNames.put("Rabbit", "minecraft:rabbit");
+        oldToNewNames.put("Sheep", "minecraft:sheep");
+        oldToNewNames.put("Shulker", "minecraft:shulker");
+        oldToNewNames.put("ShulkerBullet", "minecraft:shulker_bullet");
+        oldToNewNames.put("Silverfish", "minecraft:silverfish");
+        oldToNewNames.put("Skeleton", "minecraft:skeleton");
+        oldToNewNames.put("SkeletonHorse", "minecraft:skeleton_horse");
+        oldToNewNames.put("Slime", "minecraft:slime");
+        oldToNewNames.put("SmallFireball", "minecraft:small_fireball");
+        oldToNewNames.put("Snowball", "minecraft:snowball");
+        oldToNewNames.put("SnowMan", "minecraft:snowman");
+        oldToNewNames.put("SpectralArrow", "minecraft:spectral_arrow");
+        oldToNewNames.put("Spider", "minecraft:spider");
+        oldToNewNames.put("Squid", "minecraft:squid");
+        oldToNewNames.put("Stray", "minecraft:stray");
+        oldToNewNames.put("ThrownEgg", "minecraft:egg");
+        oldToNewNames.put("ThrownEnderpearl", "minecraft:ender_pearl");
+        oldToNewNames.put("ThrownExpBottle", "minecraft:xp_bottle");
+        oldToNewNames.put("ThrownPotion", "minecraft:potion");
+        oldToNewNames.put("Villager", "minecraft:villager");
+        oldToNewNames.put("VillagerGolem", "minecraft:villager_golem");
+        oldToNewNames.put("Witch", "minecraft:witch");
+        oldToNewNames.put("WitherBoss", "minecraft:wither");
+        oldToNewNames.put("WitherSkeleton", "minecraft:wither_skeleton");
+        oldToNewNames.put("WitherSkull", "minecraft:wither_skull");
+        oldToNewNames.put("Wolf", "minecraft:wolf");
+        oldToNewNames.put("XPOrb", "minecraft:xp_orb");
+        oldToNewNames.put("Zombie", "minecraft:zombie");
+        oldToNewNames.put("ZombieHorse", "minecraft:zombie_horse");
+        oldToNewNames.put("ZombieVillager", "minecraft:zombie_villager");
+    }
+
+    public static void toClient(CompoundTag tag) {
+        if (tag.get("id") instanceof StringTag) {
+            StringTag id = tag.get("id");
+            if (oldToNewNames.containsKey(id.getValue())) {
+                id.setValue(oldToNewNames.get(id.getValue()));
+            }
+        }
+    }
+
+    public static void toClientSpawner(CompoundTag tag) {
+        if (tag != null && tag.contains("SpawnData")) {
+            CompoundTag spawnData = tag.get("SpawnData");
+            if (spawnData != null && spawnData.contains("id"))
+                toClient(spawnData);
+        }
+    }
+
+    public static void toClientItem(Item item) {
+        if (hasEntityTag(item)) {
+            CompoundTag entityTag = item.getTag().get("EntityTag");
+            toClient(entityTag);
+        }
+        if (item != null && item.getAmount() <= 0) item.setAmount((byte) 1);
+    }
+
+    public static void toServerItem(Item item) {
+        if (hasEntityTag(item)) {
+            CompoundTag entityTag = item.getTag().get("EntityTag");
+            if (entityTag.get("id") instanceof StringTag) {
+                StringTag id = entityTag.get("id");
+                if (oldToNewNames.inverse().containsKey(id.getValue())) {
+                    id.setValue(oldToNewNames.inverse().get(id.getValue()));
+                }
+            }
+        }
+    }
+
+    private static boolean hasEntityTag(Item item) {
+        if (item != null && item.getId() == 383) { // Monster Egg
+            CompoundTag tag = item.getTag();
+            if (tag != null && tag.contains("EntityTag") && tag.get("EntityTag") instanceof CompoundTag) {
+                if (((CompoundTag) tag.get("EntityTag")).get("id") instanceof StringTag) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+}

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_11to1_10/ItemRewriter.java

@@ -1,43 +0,0 @@
-package us.myles.ViaVersion.protocols.protocol1_11to1_10;
-
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
-import org.spacehq.opennbt.tag.builtin.StringTag;
-import us.myles.ViaVersion.api.minecraft.item.Item;
-
-public class ItemRewriter {
-    public static void toClient(Item item) {
-        if (hasEntityTag(item)) {
-            CompoundTag entityTag = item.getTag().get("EntityTag");
-            if (entityTag.get("id") instanceof StringTag) {
-                StringTag id = entityTag.get("id");
-                id.setValue("minecraft:" + id.getValue().toLowerCase());
-            }
-        }
-    }
-
-    public static void toServer(Item item) {
-        if (hasEntityTag(item)) {
-            CompoundTag entityTag = item.getTag().get("EntityTag");
-            if (entityTag.get("id") instanceof StringTag) {
-                StringTag id = entityTag.get("id");
-
-                String value = id.getValue().replaceAll("minecraft:", "");
-                if (value.length() > 1)
-                    value = value.substring(0, 1).toUpperCase() + value.substring(1);
-                id.setValue(value);
-            }
-        }
-    }
-
-    private static boolean hasEntityTag(Item item) {
-        if (item != null && item.getId() == 383) { // Monster Egg
-            CompoundTag tag = item.getTag();
-            if (tag != null && tag.contains("EntityTag") && tag.get("EntityTag") instanceof CompoundTag) {
-                if (((CompoundTag) tag.get("EntityTag")).get("id") instanceof StringTag) {
-                    return true;
-                }
-            }
-        }
-        return false;
-    }
-}

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_11to1_10/Protocol1_11To1_10.java

@@ -1,10 +1,13 @@
 package us.myles.ViaVersion.protocols.protocol1_11to1_10;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
 import com.google.common.base.Optional;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.entities.Entity1_11Types;
+import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.protocol.Protocol;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
@@ -15,6 +18,8 @@ import us.myles.ViaVersion.api.type.types.version.Types1_9;
 import us.myles.ViaVersion.packets.State;
 import us.myles.ViaVersion.protocols.protocol1_11to1_10.packets.InventoryPackets;
 import us.myles.ViaVersion.protocols.protocol1_11to1_10.storage.EntityTracker;
+import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
+import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
 public class Protocol1_11To1_10 extends Protocol {
     private static final ValueTransformer<Float, Short> toOldByte = new ValueTransformer<Float, Short>(Type.UNSIGNED_BYTE) {
@@ -243,6 +248,91 @@ public class Protocol1_11To1_10 extends Protocol {
             }
         });
 
+        // Update Block Entity
+        registerOutgoing(State.PLAY, 0x09, 0x09, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.POSITION); // 0 - Position
+                map(Type.UNSIGNED_BYTE); // 1 - Action
+                map(Type.NBT); // 2 - NBT data
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        if (wrapper.get(Type.UNSIGNED_BYTE, 0) == 1) {
+                            CompoundTag tag = wrapper.get(Type.NBT, 0);
+                            EntityIdRewriter.toClientSpawner(tag);
+                        }
+                    }
+                });
+            }
+        });
+
+        // Chunk Data
+        registerOutgoing(State.PLAY, 0x20, 0x20, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+
+                        Chunk1_9_3_4Type type = new Chunk1_9_3_4Type(clientWorld);
+                        Chunk chunk = wrapper.passthrough(type);
+
+                        // Clear any other bytes (This is a workaround for a issue with 1.9.2 encoder adding nbt list)
+                        wrapper.clearInputBuffer();
+
+                        if (chunk.getBlockEntities() == null) return;
+                        for (CompoundTag tag : chunk.getBlockEntities()) {
+                            if (tag.contains("id") &&
+                                    ((StringTag) tag.get("id")).getValue().equals("MobSpawner")) {
+                                EntityIdRewriter.toClientSpawner(tag);
+                            }
+                        }
+                    }
+                });
+            }
+        });
+
+        // Join (save dimension id)
+        registerOutgoing(State.PLAY, 0x23, 0x23, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT); // 0 - Entity ID
+                map(Type.UNSIGNED_BYTE); // 1 - Gamemode
+                map(Type.INT); // 2 - Dimension
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        ClientWorld clientChunks = wrapper.user().get(ClientWorld.class);
+
+                        int dimensionId = wrapper.get(Type.INT, 1);
+                        clientChunks.setEnvironment(dimensionId);
+                    }
+                });
+            }
+        });
+
+        // Respawn (save dimension id)
+        registerOutgoing(State.PLAY, 0x33, 0x33, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT); // 0 - Dimension ID
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+
+                        int dimensionId = wrapper.get(Type.INT, 0);
+                        clientWorld.setEnvironment(dimensionId);
+                    }
+                });
+            }
+        });
+
         /*
             INCOMING PACKETS
          */
@@ -314,5 +404,7 @@ public class Protocol1_11To1_10 extends Protocol {
     @Override
     public void init(UserConnection userConnection) {
         userConnection.put(new EntityTracker(userConnection));
+        if (!userConnection.has(ClientWorld.class))
+            userConnection.put(new ClientWorld(userConnection));
     }
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_11to1_10/packets/InventoryPackets.java

@@ -6,7 +6,7 @@ import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
 import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.packets.State;
-import us.myles.ViaVersion.protocols.protocol1_11to1_10.ItemRewriter;
+import us.myles.ViaVersion.protocols.protocol1_11to1_10.EntityIdRewriter;
 import us.myles.ViaVersion.protocols.protocol1_11to1_10.Protocol1_11To1_10;
 
 public class InventoryPackets {
@@ -27,7 +27,7 @@ public class InventoryPackets {
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
                         Item stack = wrapper.get(Type.ITEM, 0);
-                        ItemRewriter.toClient(stack);
+                        EntityIdRewriter.toClientItem(stack);
                     }
                 });
             }
@@ -45,7 +45,7 @@ public class InventoryPackets {
                     public void handle(PacketWrapper wrapper) throws Exception {
                         Item[] stacks = wrapper.get(Type.ITEM_ARRAY, 0);
                         for (Item stack : stacks)
-                            ItemRewriter.toClient(stack);
+                            EntityIdRewriter.toClientItem(stack);
                     }
                 });
             }
@@ -63,7 +63,7 @@ public class InventoryPackets {
                     @Override
                     public void handle(PacketWrapper wrapper) throws Exception {
                         Item stack = wrapper.get(Type.ITEM, 0);
-                        ItemRewriter.toClient(stack);
+                        EntityIdRewriter.toClientItem(stack);
                     }
                 });
             }
@@ -83,12 +83,12 @@ public class InventoryPackets {
 
                             int size = wrapper.passthrough(Type.UNSIGNED_BYTE);
                             for (int i = 0; i < size; i++) {
-                                ItemRewriter.toClient(wrapper.passthrough(Type.ITEM)); // Input Item
-                                ItemRewriter.toClient(wrapper.passthrough(Type.ITEM)); // Output Item
+                                EntityIdRewriter.toClientItem(wrapper.passthrough(Type.ITEM)); // Input Item
+                                EntityIdRewriter.toClientItem(wrapper.passthrough(Type.ITEM)); // Output Item
 
                                 boolean secondItem = wrapper.passthrough(Type.BOOLEAN); // Has second item
                                 if (secondItem)
-                                    ItemRewriter.toClient(wrapper.passthrough(Type.ITEM)); // Second Item
+                                    EntityIdRewriter.toClientItem(wrapper.passthrough(Type.ITEM)); // Second Item
 
                                 wrapper.passthrough(Type.BOOLEAN); // Trade disabled
                                 wrapper.passthrough(Type.INT); // Number of tools uses
@@ -119,7 +119,7 @@ public class InventoryPackets {
                             @Override
                             public void handle(PacketWrapper wrapper) throws Exception {
                                 Item item = wrapper.get(Type.ITEM, 0);
-                                ItemRewriter.toServer(item);
+                                EntityIdRewriter.toServerItem(item);
                             }
                         });
                     }
@@ -137,7 +137,7 @@ public class InventoryPackets {
                             @Override
                             public void handle(PacketWrapper wrapper) throws Exception {
                                 Item item = wrapper.get(Type.ITEM, 0);
-                                ItemRewriter.toServer(item);
+                                EntityIdRewriter.toServerItem(item);
                             }
                         });
                     }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_12to1_11_1/Protocol1_12To1_11_1.java

@@ -0,0 +1,268 @@
+package us.myles.ViaVersion.protocols.protocol1_12to1_11_1;
+
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.IntTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+import us.myles.ViaVersion.api.PacketWrapper;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
+import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
+import us.myles.ViaVersion.api.protocol.Protocol;
+import us.myles.ViaVersion.api.remapper.PacketHandler;
+import us.myles.ViaVersion.api.remapper.PacketRemapper;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.packets.State;
+import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
+import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+
+public class Protocol1_12To1_11_1 extends Protocol {
+
+    @Override
+    protected void registerPackets() {
+        // Outgoing
+
+        // Chunk Data
+        registerOutgoing(State.PLAY, 0x20, 0x20, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+
+                        Chunk1_9_3_4Type type = new Chunk1_9_3_4Type(clientWorld);
+                        Chunk chunk = wrapper.passthrough(type);
+
+                        for (int i = 0; i < chunk.getSections().length; i++) {
+                            ChunkSection section = chunk.getSections()[i];
+                            if (section == null)
+                                continue;
+
+                            for (int x = 0; x < 16; x++) {
+                                for (int y = 0; y < 16; y++) {
+                                    for (int z = 0; z < 16; z++) {
+                                        int block = section.getBlockId(x, y, z);
+                                        // Is this a bed?
+                                        if (block == 26) {
+                                            //  NBT -> { color:14, x:132, y:64, z:222, id:"minecraft:bed" } (Debug output)
+                                            CompoundTag tag = new CompoundTag("");
+                                            tag.put(new IntTag("color", 14)); // Set color to red (Default in previous versions)
+                                            tag.put(new IntTag("x", x + (chunk.getX() << 4)));
+                                            tag.put(new IntTag("y", y + (i << 4)));
+                                            tag.put(new IntTag("z", z + (chunk.getZ() << 4)));
+                                            tag.put(new StringTag("id", "minecraft:bed"));
+
+                                            // Add a fake block entity
+                                            chunk.getBlockEntities().add(tag);
+                                        }
+                                    }
+                                }
+                            }
+                        }
+
+                    }
+                });
+            }
+        });
+        // Join Packet
+        registerOutgoing(State.PLAY, 0x23, 0x23, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT); // 0 - Entity ID
+                map(Type.UNSIGNED_BYTE); // 1 - Gamemode
+                map(Type.INT); // 2 - Dimension
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        ClientWorld clientChunks = wrapper.user().get(ClientWorld.class);
+
+                        int dimensionId = wrapper.get(Type.INT, 1);
+                        clientChunks.setEnvironment(dimensionId);
+                    }
+                });
+            }
+        });
+
+        // 0x28 moved to 0x25
+        registerOutgoing(State.PLAY, 0x28, 0x25);
+        registerOutgoing(State.PLAY, 0x25, 0x26);
+        registerOutgoing(State.PLAY, 0x26, 0x27);
+        registerOutgoing(State.PLAY, 0x27, 0x28);
+        // New packet at 0x30
+        registerOutgoing(State.PLAY, 0x30, 0x31);
+        registerOutgoing(State.PLAY, 0x31, 0x32);
+        registerOutgoing(State.PLAY, 0x32, 0x33);
+        // Respawn Packet
+        registerOutgoing(State.PLAY, 0x33, 0x34, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.INT); // 0 - Dimension ID
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
+
+                        int dimensionId = wrapper.get(Type.INT, 0);
+                        clientWorld.setEnvironment(dimensionId);
+                    }
+                });
+            }
+        });
+
+        registerOutgoing(State.PLAY, 0x34, 0x35);
+        // New packet at 0x36
+        registerOutgoing(State.PLAY, 0x35, 0x37);
+        registerOutgoing(State.PLAY, 0x36, 0x38);
+        registerOutgoing(State.PLAY, 0x37, 0x39);
+        registerOutgoing(State.PLAY, 0x38, 0x3a);
+        registerOutgoing(State.PLAY, 0x39, 0x3b);
+        registerOutgoing(State.PLAY, 0x3a, 0x3c);
+        registerOutgoing(State.PLAY, 0x3b, 0x3d);
+        registerOutgoing(State.PLAY, 0x3c, 0x3e);
+        registerOutgoing(State.PLAY, 0x3d, 0x3f);
+        registerOutgoing(State.PLAY, 0x3e, 0x40);
+        registerOutgoing(State.PLAY, 0x3f, 0x41);
+        registerOutgoing(State.PLAY, 0x40, 0x42);
+        registerOutgoing(State.PLAY, 0x41, 0x43);
+        registerOutgoing(State.PLAY, 0x42, 0x44);
+        registerOutgoing(State.PLAY, 0x43, 0x45);
+        registerOutgoing(State.PLAY, 0x44, 0x46);
+        registerOutgoing(State.PLAY, 0x45, 0x47);
+
+        // Sound effect, should work fine, might need checking for parrots?
+        registerOutgoing(State.PLAY, 0x46, 0x48, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.VAR_INT); // 0 - Sound name
+                map(Type.VAR_INT); // 1 - Sound Category
+                map(Type.INT); // 2 - x
+                map(Type.INT); // 3 - y
+                map(Type.INT); // 4 - z
+                map(Type.FLOAT); // 5 - Volume
+                map(Type.FLOAT); // 6 - Pitch
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        int id = wrapper.get(Type.VAR_INT, 0);
+                        id = getNewSoundId(id);
+
+                        if (id == -1) // Removed
+                            wrapper.cancel();
+                        wrapper.set(Type.VAR_INT, 0, id);
+                    }
+                });
+            }
+        });
+
+        registerOutgoing(State.PLAY, 0x47, 0x49);
+        registerOutgoing(State.PLAY, 0x48, 0x4a);
+        registerOutgoing(State.PLAY, 0x49, 0x4b);
+        // New packet at 0x4c
+        registerOutgoing(State.PLAY, 0x4a, 0x4d);
+        registerOutgoing(State.PLAY, 0x4b, 0x4e);
+
+        // Incoming
+        // New packet at 0x01
+        registerIncoming(State.PLAY, 0x01, 0x01, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        wrapper.cancel();
+                    }
+                });
+            }
+        });
+        registerIncoming(State.PLAY, 0x01, 0x02);
+        registerIncoming(State.PLAY, 0x02, 0x03);
+        registerIncoming(State.PLAY, 0x03, 0x04);
+        registerIncoming(State.PLAY, 0x04, 0x05);
+        registerIncoming(State.PLAY, 0x05, 0x06);
+        registerIncoming(State.PLAY, 0x06, 0x07);
+        registerIncoming(State.PLAY, 0x07, 0x08);
+        registerIncoming(State.PLAY, 0x08, 0x09);
+        registerIncoming(State.PLAY, 0x09, 0x0a);
+        registerIncoming(State.PLAY, 0x0a, 0x0b);
+        registerIncoming(State.PLAY, 0x0b, 0x0c);
+        // Mojang swapped 0x0F to 0x0D
+        registerIncoming(State.PLAY, 0x0f, 0x0d);
+        registerIncoming(State.PLAY, 0x0c, 0x0e);
+        // Mojang swapped 0x0F to 0x0D
+        registerIncoming(State.PLAY, 0x0d, 0x0f);
+        registerIncoming(State.PLAY, 0x0e, 0x10);
+        registerIncoming(State.PLAY, 0x10, 0x11);
+        registerIncoming(State.PLAY, 0x11, 0x12);
+        registerIncoming(State.PLAY, 0x12, 0x13);
+        registerIncoming(State.PLAY, 0x13, 0x14);
+        registerIncoming(State.PLAY, 0x14, 0x15);
+        registerIncoming(State.PLAY, 0x15, 0x16);
+        // New packet at 0x17
+        registerIncoming(State.PLAY, 0x17, 0x17, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        wrapper.cancel();
+                    }
+                });
+            }
+        });
+        registerIncoming(State.PLAY, 0x16, 0x18);
+        // New packet 0x19
+        registerIncoming(State.PLAY, 0x19, 0x19, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        wrapper.cancel();
+                    }
+                });
+            }
+        });
+        registerIncoming(State.PLAY, 0x17, 0x1a);
+        registerIncoming(State.PLAY, 0x18, 0x1b);
+        registerIncoming(State.PLAY, 0x19, 0x1c);
+        registerIncoming(State.PLAY, 0x1a, 0x1d);
+        registerIncoming(State.PLAY, 0x1b, 0x1e);
+        registerIncoming(State.PLAY, 0x1c, 0x1f);
+        registerIncoming(State.PLAY, 0x1d, 0x20);
+    }
+
+    private int getNewSoundId(int id) { //TODO Make it better, suggestions are welcome. It's ugly and hardcoded now.
+        int newId = id;
+        if (id >= 26) // End Portal Sounds
+            newId += 2;
+        if (id >= 70) // New Block Notes
+            newId += 4;
+        if (id >= 74) // New Block Note 2
+            newId += 1;
+        if (id >= 143) // Boat Sounds
+            newId += 3;
+        if (id >= 185) // Endereye death
+            newId += 1;
+        if (id >= 263) // Illagers
+            newId += 7;
+        if (id >= 301) // Parrots
+            newId += 33;
+        if (id >= 317) // Player Sounds
+            newId += 2;
+        if (id >= 491) // UI toast sound
+            newId += 3;
+        return newId;
+    }
+
+    @Override
+    public void init(UserConnection userConnection) {
+        if (!userConnection.has(ClientWorld.class))
+            userConnection.put(new ClientWorld(userConnection));
+    }
+}

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/Protocol1_9_1_2TO1_9_3_4.java

@@ -1,6 +1,6 @@
 package us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4;
 
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.minecraft.Position;
@@ -13,6 +13,7 @@ import us.myles.ViaVersion.packets.State;
 import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.chunks.BlockEntity;
 import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
+import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_1_2Type;
 
 public class Protocol1_9_1_2TO1_9_3_4 extends Protocol {
 
@@ -53,6 +54,7 @@ public class Protocol1_9_1_2TO1_9_3_4 extends Protocol {
             }
         });
 
+        // Chunk Packet
         registerOutgoing(State.PLAY, 0x20, 0x20, new PacketRemapper() {
             @Override
             public void registerMap() {
@@ -61,9 +63,11 @@ public class Protocol1_9_1_2TO1_9_3_4 extends Protocol {
                     public void handle(PacketWrapper wrapper) throws Exception {
                         ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
 
-                        Chunk1_9_3_4Type type = new Chunk1_9_3_4Type(clientWorld);
-                        Chunk chunk = wrapper.passthrough(type);
+                        Chunk1_9_3_4Type newType = new Chunk1_9_3_4Type(clientWorld);
+                        Chunk1_9_1_2Type oldType = new Chunk1_9_1_2Type(clientWorld); // Get the old type to not write Block Entities
 
+                        Chunk chunk = wrapper.read(newType);
+                        wrapper.write(oldType, chunk);
                         BlockEntity.handle(chunk.getBlockEntities(), wrapper.user());
                     }
                 });

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/BlockEntity.java

@@ -1,7 +1,7 @@
 package us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.chunks;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import lombok.Getter;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.UserConnection;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/Chunk1_9_3_4.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.chunks;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import lombok.AllArgsConstructor;
 import lombok.Data;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 
 import java.util.List;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/ChunkSection1_9_3_4.java

@@ -48,8 +48,12 @@ public class ChunkSection1_9_3_4 implements ChunkSection {
     }
 
     public int getBlockId(int x, int y, int z) {
+        return getBlock(x, y, z) >> 4;
+    }
+
+    public int getBlock(int x, int y, int z) {
         int index = blocks[index(x, y, z)];
-        return palette.get(index) >> 4;
+        return palette.get(index);
     }
 
     /**

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/types/Chunk1_9_3_4Type.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.types;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.minecraft.Environment;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
@@ -13,6 +13,7 @@ import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.chunks.Chunk1_9_3_
 import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.chunks.ChunkSection1_9_3_4;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.BitSet;
 import java.util.List;
@@ -58,7 +59,7 @@ public class Chunk1_9_3_4Type extends PartialType<Chunk, ClientWorld> {
             input.readBytes(biomeData);
         }
 
-        List<CompoundTag> nbtData = Arrays.asList(Type.NBT_ARRAY.read(input));
+        List<CompoundTag> nbtData = new ArrayList<>(Arrays.asList(Type.NBT_ARRAY.read(input)));
 
         return new Chunk1_9_3_4(chunkX, chunkZ, groundUp, primaryBitmask, sections, biomeData, nbtData);
     }
@@ -92,7 +93,8 @@ public class Chunk1_9_3_4Type extends PartialType<Chunk, ClientWorld> {
             output.writeBytes(chunk.getBiomeData());
         }
 
-        // Don't write block entities
+        // Write Block Entities
+        Type.NBT_ARRAY.write(output, chunk.getBlockEntities().toArray(new CompoundTag[0]));
     }
 
     @Override

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/Protocol1_9_3TO1_9_1_2.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2;
 
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
-import org.spacehq.opennbt.tag.builtin.IntTag;
-import org.spacehq.opennbt.tag.builtin.StringTag;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.IntTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.minecraft.Position;
@@ -17,7 +17,6 @@ import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.chunks.FakeTileEntit
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.types.Chunk1_9_1_2Type;
 
-import java.util.ArrayList;
 import java.util.List;
 
 public class Protocol1_9_3TO1_9_1_2 extends Protocol {
@@ -80,7 +79,7 @@ public class Protocol1_9_3TO1_9_1_2 extends Protocol {
                         Chunk1_9_1_2Type type = new Chunk1_9_1_2Type(clientWorld);
                         Chunk chunk = wrapper.passthrough(type);
 
-                        List<CompoundTag> tags = new ArrayList<>();
+                        List<CompoundTag> tags = chunk.getBlockEntities();
                         for (int i = 0; i < chunk.getSections().length; i++) {
                             ChunkSection section = chunk.getSections()[i];
                             if (section == null)
@@ -98,7 +97,8 @@ public class Protocol1_9_3TO1_9_1_2 extends Protocol {
                             }
                         }
 
-                        wrapper.write(Type.NBT_ARRAY, tags.toArray(new CompoundTag[0]));
+                        // Send (for clients on this version)
+                        wrapper.write(Type.NBT_ARRAY, chunk.getBlockEntities().toArray(new CompoundTag[0]));
                     }
                 });
             }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/Chunk1_9_1_2.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.chunks;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import lombok.AllArgsConstructor;
 import lombok.Data;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 
 import java.util.List;
@@ -16,7 +16,7 @@ public class Chunk1_9_1_2 implements Chunk {
     private int bitmask;
     private final ChunkSection1_9_1_2[] sections;
     private byte[] biomeData;
-    List<CompoundTag> blockEntities;
+    private List<CompoundTag> blockEntities;
 
     public boolean isBiomeData() {
         return biomeData != null;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/ChunkSection1_9_1_2.java

@@ -48,8 +48,12 @@ public class ChunkSection1_9_1_2 implements ChunkSection {
     }
 
     public int getBlockId(int x, int y, int z) {
+        return getBlock(x, y, z) >> 4;
+    }
+
+    public int getBlock(int x, int y, int z) {
         int index = blocks[index(x, y, z)];
-        return palette.get(index) >> 4;
+        return palette.get(index);
     }
 
     /**

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/FakeTileEntity.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.chunks;
 
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
-import org.spacehq.opennbt.tag.builtin.IntTag;
-import org.spacehq.opennbt.tag.builtin.StringTag;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.IntTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
 
 import java.util.Arrays;
 import java.util.List;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/types/Chunk1_9_1_2Type.java

@@ -1,8 +1,8 @@
 package us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.types;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.minecraft.Environment;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/ItemRewriter.java

@@ -1,9 +1,9 @@
 package us.myles.ViaVersion.protocols.protocol1_9to1_8;
 
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
-import org.spacehq.opennbt.tag.builtin.ListTag;
-import org.spacehq.opennbt.tag.builtin.StringTag;
-import org.spacehq.opennbt.tag.builtin.Tag;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.ListTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
+import com.github.steveice10.opennbt.tag.builtin.Tag;
 import us.myles.ViaVersion.api.minecraft.item.Item;
 
 import java.util.Collections;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/Protocol1_9TO1_8.java

@@ -94,6 +94,7 @@ public class Protocol1_9TO1_8 extends Protocol {
         providers.register(BulkChunkTranslatorProvider.class, new BulkChunkTranslatorProvider());
         providers.register(CommandBlockProvider.class, new CommandBlockProvider());
         providers.register(EntityIdProvider.class, new EntityIdProvider());
+        providers.register(BossBarProvider.class, new BossBarProvider());
         providers.require(MovementTransmitterProvider.class);
         if (Via.getConfig().isStimulatePlayerTick()) {
             Via.getPlatform().runRepeatingSync(new ViaIdleThread(), 1L);

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/chunks/Chunk1_9to1_8.java

@@ -1,12 +1,12 @@
 package us.myles.ViaVersion.protocols.protocol1_9to1_8.chunks;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.ToString;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 
-import java.util.Collections;
+import java.util.ArrayList;
 import java.util.List;
 
 @RequiredArgsConstructor
@@ -19,6 +19,7 @@ public class Chunk1_9to1_8 implements Chunk {
     private final int primaryBitmask;
     private final ChunkSection1_9to1_8[] sections;
     private final byte[] biomeData;
+    private final List<CompoundTag> blockEntities;
     private boolean unloadPacket = false;
 
     /**
@@ -28,7 +29,8 @@ public class Chunk1_9to1_8 implements Chunk {
      * @param z coord
      */
     public Chunk1_9to1_8(int x, int z) {
-        this(x, z, true, 0, new ChunkSection1_9to1_8[16], null);
+        this(x, z, true, 0, new ChunkSection1_9to1_8[16], null,
+                new ArrayList<CompoundTag>());
         this.unloadPacket = true;
     }
 
@@ -50,9 +52,4 @@ public class Chunk1_9to1_8 implements Chunk {
     public int getBitmask() {
         return primaryBitmask;
     }
-
-    @Override
-    public List<CompoundTag> getBlockEntities() {
-        return Collections.emptyList();
-    }
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/chunks/ChunkSection1_9to1_8.java

@@ -47,8 +47,12 @@ public class ChunkSection1_9to1_8 implements ChunkSection {
     }
 
     public int getBlockId(int x, int y, int z) {
+        return getBlock(x, y, z) >> 4;
+    }
+
+    public int getBlock(int x, int y, int z) {
         int index = blocks[index(x, y, z)];
-        return palette.get(index) >> 4;
+        return palette.get(index);
     }
 
     /**

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/packets/SpawnPackets.java

@@ -303,7 +303,7 @@ public class SpawnPackets {
                             packet.write(Type.VAR_INT, 0);
                             packet.write(Type.ITEM, new Item(item, (byte) 1, (short) 0, null));
                             try {
-                                packet.send(Protocol1_9TO1_8.class);
+                                packet.send(Protocol1_9TO1_8.class, true, true);
                             } catch (Exception e) {
                                 e.printStackTrace();
                             }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/packets/WorldPackets.java

@@ -1,10 +1,10 @@
 package us.myles.ViaVersion.protocols.protocol1_9to1_8.packets;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
+import com.github.steveice10.opennbt.tag.builtin.StringTag;
 import com.google.common.base.Optional;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
-import org.spacehq.opennbt.tag.builtin.StringTag;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.minecraft.Position;
@@ -306,18 +306,20 @@ public class WorldPackets {
                         Item item = Protocol1_9TO1_8.getHandItem(wrapper.user());
                         // Blocking patch
                         if (Via.getConfig().isShieldBlocking()) {
-                            if (item != null) {
-                                if (Protocol1_9TO1_8.isSword(item.getId())) {
-                                    if (hand == 0) {
-                                        EntityTracker tracker = wrapper.user().get(EntityTracker.class);
-                                        if (!tracker.isBlocking()) {
-                                            tracker.setBlocking(true);
-                                            Item shield = new Item((short) 442, (byte) 1, (short) 0, null);
-                                            tracker.setSecondHand(shield);
-                                        }
-                                        wrapper.cancel();
+                            EntityTracker tracker = wrapper.user().get(EntityTracker.class);
+                            
+                            if (item != null && Protocol1_9TO1_8.isSword(item.getId())) {
+                                if (hand == 0) {
+                                    if (!tracker.isBlocking()) {
+                                        tracker.setBlocking(true);
+                                        Item shield = new Item((short) 442, (byte) 1, (short) 0, null);
+                                        tracker.setSecondHand(shield);
                                     }
+                                    wrapper.cancel();
                                 }
+                            } else {
+                                tracker.setSecondHand(null);
+                                tracker.setBlocking(false);
                             }
                         }
                         wrapper.write(Type.ITEM, item);

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/providers/BossBarProvider.java

@@ -0,0 +1,16 @@
+package us.myles.ViaVersion.protocols.protocol1_9to1_8.providers;
+
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.platform.providers.Provider;
+
+import java.util.UUID;
+
+public class BossBarProvider implements Provider {
+    public void handleAdd(UserConnection user, UUID barUUID) {
+
+    }
+
+    public void handleRemove(UserConnection user, UUID barUUID) {
+
+    }
+}

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/providers/CommandBlockProvider.java

@@ -1,7 +1,7 @@
 package us.myles.ViaVersion.protocols.protocol1_9to1_8.providers;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.google.common.base.Optional;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.minecraft.Position;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/storage/CommandBlockStorage.java

@@ -1,10 +1,10 @@
 package us.myles.ViaVersion.protocols.protocol1_9to1_8.storage;
 
+import com.github.steveice10.opennbt.tag.builtin.ByteTag;
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import com.google.common.base.Optional;
 import lombok.Getter;
 import lombok.Setter;
-import org.spacehq.opennbt.tag.builtin.ByteTag;
-import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import us.myles.ViaVersion.api.Pair;
 import us.myles.ViaVersion.api.data.StoredObject;
 import us.myles.ViaVersion.api.data.UserConnection;

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/storage/EntityTracker.java

@@ -24,6 +24,8 @@ import us.myles.ViaVersion.protocols.base.ProtocolInfo;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.Protocol1_9TO1_8;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.chat.GameMode;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.metadata.MetadataRewriter;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.BossBarProvider;
+import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.BulkChunkTranslatorProvider;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.EntityIdProvider;
 
 import java.util.*;
@@ -95,6 +97,8 @@ public class EntityTracker extends StoredObject {
         BossBar bar = bossBarMap.remove(entityID);
         if (bar != null) {
             bar.hide();
+            // Send to provider
+            Via.getManager().getProviders().get(BossBarProvider.class).handleRemove(getUser(), bar.getId());
         }
     }
 
@@ -158,6 +162,8 @@ public class EntityTracker extends StoredObject {
                             if (validBlocking.contains(entityID)) {
                                 Item shield = new Item((short) 442, (byte) 1, (short) 0, null);
                                 setSecondHand(entityID, shield);
+                            } else {
+                                setSecondHand(entityID, null);
                             }
                         } else {
                             setSecondHand(entityID, null);
@@ -203,6 +209,9 @@ public class EntityTracker extends StoredObject {
                             bossBarMap.put(entityID, bar);
                             bar.addPlayer(uuid);
                             bar.show();
+
+                            // Send to provider
+                            Via.getManager().getProviders().get(BossBarProvider.class).handleAdd(getUser(), bar.getId());
                         } else {
                             bar.setTitle(title);
                         }
@@ -217,6 +226,8 @@ public class EntityTracker extends StoredObject {
                             bossBarMap.put(entityID, bar);
                             bar.addPlayer(uuid);
                             bar.show();
+                            // Send to provider
+                            Via.getManager().getProviders().get(BossBarProvider.class).handleAdd(getUser(), bar.getId());
                         } else {
                             bar.setHealth(health);
                         }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/types/ChunkType.java

@@ -1,5 +1,6 @@
 package us.myles.ViaVersion.protocols.protocol1_9to1_8.types;
 
+import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import us.myles.ViaVersion.api.Via;
@@ -16,6 +17,7 @@ import us.myles.ViaVersion.protocols.protocol1_9to1_8.storage.ClientChunks;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.ShortBuffer;
+import java.util.ArrayList;
 import java.util.BitSet;
 import java.util.logging.Level;
 
@@ -137,7 +139,7 @@ public class ChunkType extends PartialType<Chunk, ClientChunks> {
         }
 
         // Return chunks
-        return new Chunk1_9to1_8(chunkX, chunkZ, groundUp, bitmask, sections, biomeData);
+        return new Chunk1_9to1_8(chunkX, chunkZ, groundUp, bitmask, sections, biomeData, new ArrayList<CompoundTag>());
     }
 
     @Override
@@ -172,9 +174,5 @@ public class ChunkType extends PartialType<Chunk, ClientChunks> {
         if (chunk.hasBiomeData()) {
             output.writeBytes(chunk.getBiomeData());
         }
-
-
     }
-
-
 }

jar/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.3</version>
+        <version>1.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <name>viaversion-jar</name>
@@ -46,7 +46,7 @@
                     <minimizeJar>false</minimizeJar>
                     <relocations>
                         <relocation>
-                            <pattern>org.spacehq.opennbt</pattern>
+                            <pattern>com.github.steveice10.opennbt</pattern>
                             <shadedPattern>us.myles.viaversion.libs.opennbt</shadedPattern>
                         </relocation>
                         <relocation>

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>us.myles</groupId>
     <artifactId>viaversion-parent</artifactId>
-    <version>1.0.3</version>
+    <version>1.1.0</version>
     <packaging>pom</packaging>
 
     <name>viaversion-parent</name>
@@ -44,17 +44,17 @@
             <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots</url>
         </repository>
 
-        <!-- SpaceHQ Repo-->
-        <repository>
-            <id>spacehq-repo</id>
-            <url>https://repo.spacehq.org/content/repositories/releases/</url>
-        </repository>
-
         <!-- Bungee repo -->
         <repository>
             <id>bungeecord-repo</id>
             <url>https://oss.sonatype.org/content/repositories/snapshots</url>
         </repository>
+
+        <!-- ViaVersion repo -->
+        <repository>
+            <id>viaversion-repo</id>
+            <url>https://repo.viaversion.com</url>
+        </repository>
     </repositories>
 
     <dependencies>
@@ -65,6 +65,7 @@
             <version>1.16.6</version>
             <scope>provided</scope>
         </dependency>
+
         <!-- Javassist (Bytecode Library) -->
         <dependency>
             <groupId>org.javassist</groupId>
@@ -74,11 +75,12 @@
             <optional>true</optional>
         </dependency>
 
-        <!-- NBT Edit Library -->
+        <!-- OpenNBT Library -->
+        <!--Version 1.0 is conflicting with Maven Central (2012)-->
         <dependency>
-            <groupId>org.spacehq</groupId>
+            <groupId>com.github.steveice10</groupId>
             <artifactId>opennbt</artifactId>
-            <version>1.0</version>
+            <version>1.1-SNAPSHOT</version>
             <scope>compile</scope>
             <optional>true</optional>
         </dependency>

sponge-legacy/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.3</version>
+        <version>1.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

sponge/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.3</version>
+        <version>1.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

sponge/src/main/java/us/myles/ViaVersion/SpongePlugin.java

@@ -199,4 +199,9 @@ public class SpongePlugin implements ViaPlatform {
 
         return platformSpecific;
     }
+
+    @Override
+    public boolean isOldClientsAllowed() {
+        return true;
+    }
 }

sponge/src/main/java/us/myles/ViaVersion/sponge/handlers/SpongeChannelInitializer.java

@@ -7,6 +7,7 @@ import io.netty.handler.codec.ByteToMessageDecoder;
 import io.netty.handler.codec.MessageToByteEncoder;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.protocol.ProtocolPipeline;
+import us.myles.ViaVersion.api.protocol.ProtocolRegistry;
 
 import java.lang.reflect.Method;
 
@@ -31,18 +32,23 @@ public class SpongeChannelInitializer extends ChannelInitializer<SocketChannel>
 
     @Override
     protected void initChannel(SocketChannel socketChannel) throws Exception {
-        UserConnection info = new UserConnection(socketChannel);
-        // init protocol
-        new ProtocolPipeline(info);
-        // Add originals
-        this.method.invoke(this.original, socketChannel);
-        // Add our transformers
-        MessageToByteEncoder encoder = new SpongeEncodeHandler(info, (MessageToByteEncoder) socketChannel.pipeline().get("encoder"));
-        ByteToMessageDecoder decoder = new SpongeDecodeHandler(info, (ByteToMessageDecoder) socketChannel.pipeline().get("decoder"));
-        SpongePacketHandler chunkHandler = new SpongePacketHandler(info);
+        // Ensure ViaVersion is loaded
+        if (ProtocolRegistry.SERVER_PROTOCOL != -1) {
+            UserConnection info = new UserConnection(socketChannel);
+            // init protocol
+            new ProtocolPipeline(info);
+            // Add originals
+            this.method.invoke(this.original, socketChannel);
+            // Add our transformers
+            MessageToByteEncoder encoder = new SpongeEncodeHandler(info, (MessageToByteEncoder) socketChannel.pipeline().get("encoder"));
+            ByteToMessageDecoder decoder = new SpongeDecodeHandler(info, (ByteToMessageDecoder) socketChannel.pipeline().get("decoder"));
+            SpongePacketHandler chunkHandler = new SpongePacketHandler(info);
 
-        socketChannel.pipeline().replace("encoder", "encoder", encoder);
-        socketChannel.pipeline().replace("decoder", "decoder", decoder);
-        socketChannel.pipeline().addAfter("packet_handler", "viaversion_packet_handler", chunkHandler);
+            socketChannel.pipeline().replace("encoder", "encoder", encoder);
+            socketChannel.pipeline().replace("decoder", "decoder", decoder);
+            socketChannel.pipeline().addAfter("packet_handler", "viaversion_packet_handler", chunkHandler);
+        } else {
+            this.method.invoke(this.original, socketChannel);
+        }
     }
 }

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeViaInjector.java

@@ -36,14 +36,12 @@ public class SpongeViaInjector implements ViaInjector {
                     // Inject the list
                     List wrapper = new ListWrapper((List) value) {
                         @Override
-                        public synchronized void handleAdd(Object o) {
-                            synchronized (this) {
-                                if (o instanceof ChannelFuture) {
-                                    try {
-                                        injectChannelFuture((ChannelFuture) o);
-                                    } catch (Exception e) {
-                                        e.printStackTrace();
-                                    }
+                        public void handleAdd(Object o) {
+                            if (o instanceof ChannelFuture) {
+                                try {
+                                    injectChannelFuture((ChannelFuture) o);
+                                } catch (Exception e) {
+                                    e.printStackTrace();
                                 }
                             }
                         }

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeViaLoader.java

@@ -42,7 +42,7 @@ public class SpongeViaLoader implements ViaPlatformLoader {
         new BlockListener(plugin).register();
 
         if (plugin.getConf().isItemCache()) {
-            Via.getPlatform().runRepeatingSync(new HandItemCache(), 2L); // Updates player's items :)
+            Via.getPlatform().runRepeatingSync(new HandItemCache(), 2L); // Updates players items :)
             HandItemCache.CACHE = true;
         }