1.0.4 Release

bukkit/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.0</version>
+        <version>1.0.4</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/listeners/protocol1_9to1_8/DeathListener.java

@@ -37,16 +37,19 @@ public class DeathListener extends ViaBukkitListener {
         Via.getPlatform().runSync(new Runnable() {
             @Override
             public void run() {
-                PacketWrapper wrapper = new PacketWrapper(0x2C, null, getUserConnection(p));
-                try {
-                    wrapper.write(Type.VAR_INT, 2); // Event - Entity dead
-                    wrapper.write(Type.VAR_INT, p.getEntityId()); // Player ID
-                    wrapper.write(Type.INT, p.getEntityId()); // Entity ID
-                    Protocol1_9TO1_8.FIX_JSON.write(wrapper, msg); // Message
+                // If online
+                if(getUserConnection(p) != null) {
+                    PacketWrapper wrapper = new PacketWrapper(0x2C, null, getUserConnection(p));
+                    try {
+                        wrapper.write(Type.VAR_INT, 2); // Event - Entity dead
+                        wrapper.write(Type.VAR_INT, p.getEntityId()); // Player ID
+                        wrapper.write(Type.INT, p.getEntityId()); // Entity ID
+                        Protocol1_9TO1_8.FIX_JSON.write(wrapper, msg); // Message
 
-                    wrapper.send(Protocol1_9TO1_8.class);
-                } catch (Exception e) {
-                    e.printStackTrace();
+                        wrapper.send(Protocol1_9TO1_8.class);
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
                 }
             }
         });

bukkit/src/main/java/us/myles/ViaVersion/bukkit/listeners/protocol1_9to1_8/HandItemCache.java

@@ -6,14 +6,12 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.scheduler.BukkitRunnable;
 import us.myles.ViaVersion.api.minecraft.item.Item;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.UUID;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class HandItemCache extends BukkitRunnable {
     public static boolean CACHE = false;
-    private static ConcurrentHashMap<UUID, Item> handCache = new ConcurrentHashMap<>();
+    private static Map<UUID, Item> handCache = new ConcurrentHashMap<>();
 
     public static Item getHandItem(UUID player) {
         if (!handCache.containsKey(player))

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

@@ -52,6 +52,11 @@ public class BukkitConfigAPI extends Config implements ViaVersionConfig {
         return getBoolean("hologram-patch", false);
     }
 
+    @Override
+    public boolean isPistonAnimationPatch() {
+        return getBoolean("piston-animation-patch", false);
+    }
+
     @Override
     public boolean isBossbarPatch() {
         return getBoolean("bossbar-patch", true);

bungee/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.0</version>
+        <version>1.0.4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>us.myles</groupId>
             <artifactId>viaversion-common</artifactId>
-            <version>1.0.0</version>
+            <version>1.0.4</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

@@ -5,6 +5,7 @@ import net.md_5.bungee.api.event.ServerConnectEvent;
 import net.md_5.bungee.api.event.ServerConnectedEvent;
 import net.md_5.bungee.api.plugin.Listener;
 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.data.UserConnection;
@@ -47,8 +48,9 @@ public class BungeeServerHandler implements Listener {
 
     // Set the handshake version every time someone connects to any server
     @EventHandler
-    public void onServerConnect(ServerConnectEvent e) throws NoSuchFieldException, IllegalAccessException {
+    public void onServerConnect(ServerConnectEvent e) {
         UserConnection user = Via.getManager().getConnection(e.getPlayer().getUniqueId());
+        if (user == null) return;
         if (!user.has(BungeeStorage.class)) {
             user.put(new BungeeStorage(user, e.getPlayer()));
         }
@@ -61,12 +63,12 @@ public class BungeeServerHandler implements Listener {
             Object pendingConnection = getPendingConnection.invoke(e.getPlayer());
             Object handshake = getHandshake.invoke(pendingConnection);
             setProtocol.invoke(handshake, protocols == null ? user.get(ProtocolInfo.class).getProtocolVersion() : protocolId);
-        } catch (InvocationTargetException e1) {
+        } catch (InvocationTargetException | IllegalAccessException e1) {
             e1.printStackTrace();
         }
     }
 
-    @EventHandler
+    @EventHandler(priority = EventPriority.LOWEST)
     public void onServerConnected(ServerConnectedEvent e) {
         try {
             checkServerChange(e, Via.getManager().getConnection(e.getPlayer().getUniqueId()));
@@ -76,6 +78,7 @@ public class BungeeServerHandler implements Listener {
     }
 
     public void checkServerChange(ServerConnectedEvent e, UserConnection user) throws Exception {
+        if (user == null) return;
         if (user.has(BungeeStorage.class)) {
             BungeeStorage storage = user.get(BungeeStorage.class);
             ProxiedPlayer player = storage.getPlayer();
@@ -88,12 +91,11 @@ public class BungeeServerHandler implements Listener {
 
                     int protocolId = ProtocolDetectorService.getProtocolId(serverName);
 
-                    UserConnection viaConnection = Via.getManager().getConnection(player.getUniqueId());
-                    ProtocolInfo info = viaConnection.get(ProtocolInfo.class);
+                    ProtocolInfo info = user.get(ProtocolInfo.class);
                     // Refresh the pipes
                     List<Pair<Integer, Protocol>> protocols = ProtocolRegistry.getProtocolPath(info.getProtocolVersion(), protocolId);
-                    ProtocolPipeline pipeline = viaConnection.get(ProtocolInfo.class).getPipeline();
-                    viaConnection.clearStoredObjects();
+                    ProtocolPipeline pipeline = user.get(ProtocolInfo.class).getPipeline();
+                    user.clearStoredObjects();
                     pipeline.cleanPipes();
                     if (protocols == null) {
                         // TODO Check Bungee Supported Protocols? *shrugs*
@@ -104,14 +106,14 @@ public class BungeeServerHandler implements Listener {
                         }
                     }
 
-                    viaConnection.put(info);
-                    viaConnection.put(storage);
+                    user.put(info);
+                    user.put(storage);
 
-                    viaConnection.setActive(protocols != null);
+                    user.setActive(protocols != null);
 
                     // Init all protocols TODO check if this can get moved up to the previous for loop, and doesn't require the pipeline to already exist.
                     for (Protocol protocol : pipeline.pipes()) {
-                        protocol.init(viaConnection);
+                        protocol.init(user);
                     }
 
                     Object wrapper = channelWrapper.get(player);

bungee/src/main/java/us/myles/ViaVersion/bungee/listeners/ElytraPatch.java

@@ -0,0 +1,45 @@
+package us.myles.ViaVersion.bungee.listeners;
+
+import net.md_5.bungee.api.event.ServerConnectedEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+import net.md_5.bungee.event.EventPriority;
+import us.myles.ViaVersion.api.PacketWrapper;
+import us.myles.ViaVersion.api.Via;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.minecraft.metadata.Metadata;
+import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_9;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.api.type.types.version.Types1_9;
+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.storage.EntityTracker;
+
+import java.util.Collections;
+
+/*
+ * This patches https://github.com/MylesIsCool/ViaVersion/issues/555
+ */
+public class ElytraPatch implements Listener {
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onServerConnected(ServerConnectedEvent event) {
+        UserConnection user = Via.getManager().getConnection(event.getPlayer().getUniqueId());
+        if (user == null) return;
+
+        try {
+            if (user.get(ProtocolInfo.class).getPipeline().contains(Protocol1_9TO1_8.class)) {
+                int entityId = user.get(EntityTracker.class).getProvidedEntityId();
+
+                PacketWrapper wrapper = new PacketWrapper(0x39, null, user);
+
+                wrapper.write(Type.VAR_INT, entityId);
+                wrapper.write(Types1_9.METADATA_LIST, Collections.singletonList(new Metadata(0, MetaType1_9.Byte, (byte) 0)));
+
+                wrapper.send(Protocol1_9TO1_8.class);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}

bungee/src/main/java/us/myles/ViaVersion/bungee/listeners/MainHandPatch.java

@@ -0,0 +1,51 @@
+package us.myles.ViaVersion.bungee.listeners;
+
+import net.md_5.bungee.api.event.ServerConnectEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+import us.myles.ViaVersion.api.Via;
+import us.myles.ViaVersion.api.data.UserConnection;
+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.storage.EntityTracker;
+
+import java.lang.reflect.Method;
+
+/*
+    This solves the wrong mainhand issue when you join with BungeeCord on a 1.8 server, and switch to a 1.9 or higher.
+ */
+public class MainHandPatch implements Listener {
+    private static Method getSettings = null;
+    private static Method setMainHand = null;
+
+    static {
+        try {
+            getSettings = Class.forName("net.md_5.bungee.UserConnection").getDeclaredMethod("getSettings");
+            setMainHand = Class.forName("net.md_5.bungee.protocol.packet.ClientSettings").getDeclaredMethod("setMainHand", int.class);
+        } catch (Exception ignored) {
+        }
+    }
+
+    @EventHandler
+    public void onServerConnect(ServerConnectEvent event) {
+        // Ignore if it doesn't exist (Like BungeeCord 1.8)
+        if (setMainHand == null || getSettings == null)
+            return;
+
+        UserConnection user = Via.getManager().getConnection(event.getPlayer().getUniqueId());
+        if (user == null) return;
+
+        try {
+            if (user.get(ProtocolInfo.class).getPipeline().contains(Protocol1_9TO1_8.class)) {
+                Object settings = getSettings.invoke(event.getPlayer());
+                if (settings != null) {
+                    if (user.has(EntityTracker.class)) {
+                        setMainHand.invoke(settings, user.get(EntityTracker.class).getMainHand());
+                    }
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}

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

@@ -86,6 +86,11 @@ public class BungeeConfigAPI extends Config implements ViaVersionConfig {
         return getBoolean("hologram-patch", false);
     }
 
+    @Override
+    public boolean isPistonAnimationPatch() {
+        return getBoolean("piston-animation-patch", false);
+    }
+
     @Override
     public boolean isBossbarPatch() {
         return getBoolean("bossbar-patch", true);

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

@@ -6,12 +6,16 @@ import us.myles.ViaVersion.BungeePlugin;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.platform.ViaPlatformLoader;
 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;
 
@@ -27,11 +31,15 @@ public class BungeeViaLoader implements ViaPlatformLoader {
         ProxyServer.getInstance().getPluginManager().registerListener(plugin, plugin);
         ProxyServer.getInstance().getPluginManager().registerListener(plugin, new UpdateListener());
         ProxyServer.getInstance().getPluginManager().registerListener(plugin, new BungeeServerHandler());
+        ProxyServer.getInstance().getPluginManager().registerListener(plugin, new MainHandPatch());
+        ProxyServer.getInstance().getPluginManager().registerListener(plugin, new ElytraPatch());
 
         // Providers
         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>1.0.0</version>
+        <version>1.0.4</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
@@ -13,7 +13,6 @@
     <artifactId>viaversion-common</artifactId>
     <dependencies>
         <!-- Snake YAML -->
-
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>

common/src/main/java/us/myles/ViaVersion/api/PacketWrapper.java

@@ -283,9 +283,23 @@ public class PacketWrapper {
      * @throws Exception if it fails to write
      */
     public void send(Class<? extends Protocol> packetProtocol, boolean skipCurrentPipeline) throws Exception {
+        send(packetProtocol, skipCurrentPipeline, false);
+    }
+
+    /**
+     * Send this packet to the associated user.
+     * Be careful not to send packets twice.
+     * (Sends it after current)
+     *
+     * @param packetProtocol      - The protocol version of the packet.
+     * @param skipCurrentPipeline - Skip the current pipeline
+     * @param currentThread       - Run in the same thread
+     * @throws Exception if it fails to write
+     */
+    public void send(Class<? extends Protocol> packetProtocol, boolean skipCurrentPipeline, boolean currentThread) throws Exception {
         if (!isCancelled()) {
             ByteBuf output = constructPacket(packetProtocol, skipCurrentPipeline);
-            user().sendRawPacket(output);
+            user().sendRawPacket(output, currentThread);
         }
     }
 

common/src/main/java/us/myles/ViaVersion/api/ViaVersionConfig.java

@@ -53,6 +53,13 @@ public interface ViaVersionConfig {
      */
     boolean isHologramPatch();
 
+    /**
+     * Get if the 1.11 piston animation patch is enabled
+     *
+     * @return true if the piston patch is enabled.
+     */
+    boolean isPistonAnimationPatch();
+
     /**
      * Get if boss bars are fixed for 1.9 & 1.10 clients
      *

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/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

@@ -6,6 +6,7 @@ import us.myles.ViaVersion.api.Pair;
 import us.myles.ViaVersion.api.Via;
 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_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;
@@ -37,7 +38,8 @@ 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(), Collections.singletonList(ProtocolVersion.v1_11.getId()), ProtocolVersion.v1_10.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());
 
     }
 

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

@@ -28,6 +28,7 @@ public class ProtocolVersion {
     public static final ProtocolVersion v1_9_3;
     public static final ProtocolVersion v1_10;
     public static final ProtocolVersion v1_11;
+    public static final ProtocolVersion v1_11_1;
     public static final ProtocolVersion unknown;
 
     private final int id;
@@ -52,6 +53,7 @@ public class ProtocolVersion {
         register(v1_9_3 = new ProtocolVersion(110, "1.9.3/4"));
         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(unknown = new ProtocolVersion(-1, "UNKNOWN"));
     }
 

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

@@ -8,7 +8,9 @@ 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

@@ -138,6 +138,11 @@ 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;

common/src/main/java/us/myles/ViaVersion/commands/ViaCommandHandler.java

@@ -56,7 +56,7 @@ public abstract class ViaCommandHandler implements ViaVersionCommand {
         ViaSubCommand handler = getSubCommand(args[0]);
 
         if (!hasPermission(sender, handler.permission())) {
-            sender.sendMessage(color("&cYou are not allowed to use this commands!"));
+            sender.sendMessage(color("&cYou are not allowed to use this command!"));
             return false;
         }
 

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/ListSubCmd.java

@@ -41,7 +41,7 @@ public class ListSubCmd extends ViaSubCommand {
         }
 
         for (Map.Entry<ProtocolVersion, Set<String>> entry : playerVersions.entrySet())
-            sendMessage(sender, "&8[&6%s&8]: &b%s", entry.getKey().getName(), entry.getValue());
+            sendMessage(sender, "&8[&6%s&8] (&7%d&8): &b%s", entry.getKey().getName(), entry.getValue().size(), entry.getValue());
 
         playerVersions.clear();
         return true;

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) {
@@ -113,7 +118,12 @@ public class BaseProtocol extends Protocol {
                         ProtocolInfo info = wrapper.user().get(ProtocolInfo.class);
                         info.setState(State.PLAY);
                         // Save other info
-                        UUID uuid = UUID.fromString(wrapper.get(Type.STRING, 0));
+                        String stringUUID = wrapper.get(Type.STRING, 0);
+                        if (stringUUID.length() == 32) { // Trimmed UUIDs are 32 characters
+                            // Trimmed
+                            stringUUID = addDashes(stringUUID);
+                        }
+                        UUID uuid = UUID.fromString(stringUUID);
                         info.setUuid(uuid);
                         info.setUsername(wrapper.get(Type.STRING, 1));
                         // Add to ported clients
@@ -158,7 +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) {
@@ -232,4 +248,13 @@ public class BaseProtocol extends Protocol {
             }
         }
     }
+
+    public static String addDashes(String trimmedUUID) {
+        StringBuffer idBuff = new StringBuffer(trimmedUUID);
+        idBuff.insert(20, '-');
+        idBuff.insert(16, '-');
+        idBuff.insert(12, '-');
+        idBuff.insert(8, '-');
+        return idBuff.toString();
+    }
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_11_1to1_11/Protocol1_11_1To1_11.java

@@ -0,0 +1,16 @@
+package us.myles.ViaVersion.protocols.protocol1_11_1to1_11;
+
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.protocol.Protocol;
+
+public class Protocol1_11_1To1_11 extends Protocol {
+    @Override
+    protected void registerPackets() {
+        // Only had metadata changes, see wiki.vg for full info.
+    }
+
+    @Override
+    public void init(UserConnection userConnection) {
+
+    }
+}

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

@@ -1,16 +1,100 @@
 package us.myles.ViaVersion.protocols.protocol1_11to1_10;
 
+import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
 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 {
+    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(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());
+                if (oldToNewNames.containsKey(id.getValue())) {
+                    id.setValue(oldToNewNames.get(id.getValue()));
+                }
             }
         }
     }
@@ -20,11 +104,9 @@ public class ItemRewriter {
             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);
+                if (oldToNewNames.inverse().containsKey(id.getValue())) {
+                    id.setValue(oldToNewNames.inverse().get(id.getValue()));
+                }
             }
         }
     }

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

@@ -219,6 +219,30 @@ public class Protocol1_11To1_10 extends Protocol {
             }
         });
 
+        // Block action packet
+        registerOutgoing(State.PLAY, 0x0A, 0x0A, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.POSITION); // 0 - Position
+                map(Type.UNSIGNED_BYTE); // 1 - Action ID
+                map(Type.UNSIGNED_BYTE); // 2 - Action Param
+                map(Type.VAR_INT); // 3 - Block Type
+
+                // Cheap hack to ensure it's always right block
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(final PacketWrapper actionWrapper) throws Exception {
+                        if (Via.getConfig().isPistonAnimationPatch()) {
+                            int id = actionWrapper.get(Type.VAR_INT, 0);
+                            if (id == 33 || id == 29) {
+                                actionWrapper.cancel();
+                            }
+                        }
+                    }
+                });
+            }
+        });
+
         /*
             INCOMING PACKETS
          */
@@ -236,6 +260,24 @@ public class Protocol1_11To1_10 extends Protocol {
                 map(Type.FLOAT, toOldByte);
             }
         });
+
+        // Chat Message Incoming
+        registerIncoming(State.PLAY, 0x02, 0x02, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                map(Type.STRING); // 0 - Message
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        // 100 character limit on older servers
+                        String msg = wrapper.get(Type.STRING, 0);
+                        if (msg.length() > 100) {
+                            wrapper.set(Type.STRING, 0, msg.substring(0, 100));
+                        }
+                    }
+                });
+            }
+        });
     }
 
     private int getNewSoundId(int id) { //TODO Make it better, suggestions are welcome. It's ugly and hardcoded now.

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

@@ -81,14 +81,14 @@ public class InventoryPackets {
                         if (wrapper.get(Type.STRING, 0).equalsIgnoreCase("MC|TrList")) {
                             wrapper.passthrough(Type.INT); // Passthrough Window ID
 
-                            int size = wrapper.passthrough(Type.BYTE);
+                            int size = wrapper.passthrough(Type.UNSIGNED_BYTE);
                             for (int i = 0; i < size; i++) {
-                                ItemRewriter.toClient(wrapper.read(Type.ITEM)); // Input Item
-                                ItemRewriter.toClient(wrapper.read(Type.ITEM)); // Output Item
+                                ItemRewriter.toClient(wrapper.passthrough(Type.ITEM)); // Input Item
+                                ItemRewriter.toClient(wrapper.passthrough(Type.ITEM)); // Output Item
 
                                 boolean secondItem = wrapper.passthrough(Type.BOOLEAN); // Has second item
                                 if (secondItem)
-                                    ItemRewriter.toClient(wrapper.read(Type.ITEM)); // Second Item
+                                    ItemRewriter.toClient(wrapper.passthrough(Type.ITEM)); // Second Item
 
                                 wrapper.passthrough(Type.BOOLEAN); // Trade disabled
                                 wrapper.passthrough(Type.INT); // Number of tools uses

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/metadata/MetadataRewriter.java

@@ -72,7 +72,7 @@ public class MetadataRewriter {
                                     id = (Short) value;
                                 }
                                 if (id != -1 && data != -1) {
-                                    int combined = id << 4 | data;
+                                    int combined = id | (data & 0xF);
                                     data = -1;
                                     id = -1;
                                     entry.setValue(combined);

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

@@ -226,9 +226,9 @@ public class InventoryPackets {
                             wrapper.create(0x16, new ValueCreator() {
                                 @Override
                                 public void write(PacketWrapper wrapper) throws Exception {
-                                    wrapper.write(Type.UNSIGNED_BYTE, (short) 0);
+                                    wrapper.write(Type.BYTE, (byte) 0);
                                     wrapper.write(Type.SHORT, slot);
-                                    wrapper.write(Type.SHORT, (short) -1);
+                                    wrapper.write(Type.ITEM, null);
                                 }
                             }).send(Protocol1_9TO1_8.class);
                             // Finally reset to simulate throwing item
@@ -281,9 +281,9 @@ public class InventoryPackets {
                             wrapper.create(0x16, new ValueCreator() {
                                 @Override
                                 public void write(PacketWrapper wrapper) throws Exception {
-                                    wrapper.write(Type.UNSIGNED_BYTE, windowID);
+                                    wrapper.write(Type.BYTE, (byte) windowID);
                                     wrapper.write(Type.SHORT, slot);
-                                    wrapper.write(Type.SHORT, (short) -1);
+                                    wrapper.write(Type.ITEM, null);
                                 }
                             }).send(Protocol1_9TO1_8.class);
                             // Finally reset to simulate throwing item

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

@@ -433,7 +433,16 @@ public class PlayerPackets {
                 map(Type.VAR_INT, Type.BYTE); // 2 - Chat Mode
                 map(Type.BOOLEAN); // 3 - If Chat Colours on
                 map(Type.UNSIGNED_BYTE); // 4 - Skin Parts
-                map(Type.VAR_INT, Type.NOTHING); // 5 - Main Hand
+
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        int hand = wrapper.read(Type.VAR_INT);
+
+                        EntityTracker tracker = wrapper.user().get(EntityTracker.class);
+                        tracker.setMainHand(hand);
+                    }
+                });
             }
         });
 

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

@@ -162,7 +162,7 @@ public class WorldPackets {
                             output.setId(-1); // -1 for no writing of id
                             output.writeToBuffer(buffer);
                             PacketWrapper chunkPacket = new PacketWrapper(0x21, buffer, wrapper.user());
-                            chunkPacket.send(Protocol1_9TO1_8.class, false);
+                            chunkPacket.send(Protocol1_9TO1_8.class, false, true);
                         }
                     }
                 });

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/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.*;
@@ -51,6 +53,8 @@ public class EntityTracker extends StoredObject {
     private boolean teamExists = false;
     @Setter
     private GameMode gameMode;
+    @Setter
+    private int mainHand;
 
     public EntityTracker(UserConnection user) {
         super(user);
@@ -93,6 +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());
         }
     }
 
@@ -201,6 +207,9 @@ 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);
                         }
@@ -215,6 +224,8 @@ 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/util/Config.java

@@ -33,7 +33,7 @@ public abstract class Config implements ConfigurationProvider {
         reloadConfig();
     }
 
-    public Map<String, Object> loadConfig(File location) {
+    public synchronized Map<String, Object> loadConfig(File location) {
         List<String> unsupported = getUnsupportedOptions();
         URL jarConfigFile = Config.class.getClassLoader().getResource("config.yml");
         try {
@@ -87,7 +87,7 @@ public abstract class Config implements ConfigurationProvider {
 
     protected abstract void handleConfig(Map<String, Object> config);
 
-    public void saveConfig(File location, Map<String, Object> config) {
+    public synchronized void saveConfig(File location, Map<String, Object> config) {
         try {
             commentStore.writeComments(yaml.get().dump(config), location);
         } catch (IOException e) {
@@ -145,7 +145,11 @@ public abstract class Config implements ConfigurationProvider {
 
     public int getInt(String key, int def) {
         if (this.config.containsKey(key)) {
-            return (int) this.config.get(key);
+            if (this.config.get(key) instanceof Number) {
+                return ((Number) this.config.get(key)).intValue();
+            } else {
+                return def;
+            }
         } else {
             return def;
         }
@@ -153,7 +157,11 @@ public abstract class Config implements ConfigurationProvider {
 
     public double getDouble(String key, double def) {
         if (this.config.containsKey(key)) {
-            return (double) this.config.get(key);
+            if (this.config.get(key) instanceof Number) {
+                return ((Number) this.config.get(key)).doubleValue();
+            } else {
+                return def;
+            }
         } else {
             return def;
         }

common/src/main/resources/config.yml

@@ -79,6 +79,9 @@ tracking-max-kick-msg: "You are sending too many packets, :("
 hologram-patch: false
 # This is the offset, should work as default when enabled.
 hologram-y: -0.96
+# Should we disable piston animation for 1.11/1.11.1 clients?
+# In some cases when firing lots of pistons it crashes them.
+piston-animation-patch: false
 #
 #----------------------------------------------------------#
 #         1.9 & 1.10 CLIENTS ON 1.8 SERVERS OPTIONS        #

jar/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.0</version>
+        <version>1.0.4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <name>viaversion-jar</name>

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>us.myles</groupId>
     <artifactId>viaversion-parent</artifactId>
-    <version>1.0.0</version>
+    <version>1.0.4</version>
     <packaging>pom</packaging>
 
     <name>viaversion-parent</name>
@@ -65,6 +65,7 @@
             <version>1.16.6</version>
             <scope>provided</scope>
         </dependency>
+
         <!-- Javassist (Bytecode Library) -->
         <dependency>
             <groupId>org.javassist</groupId>
@@ -74,11 +75,11 @@
             <optional>true</optional>
         </dependency>
 
-        <!-- NBT Edit Library -->
+        <!-- OpenNBT Library -->
         <dependency>
             <groupId>org.spacehq</groupId>
             <artifactId>opennbt</artifactId>
-            <version>1.0</version>
+            <version>1.1</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>1.0.0</version>
+        <version>1.0.4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

sponge/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.0.0</version>
+        <version>1.0.4</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/listeners/protocol1_9to1_8/HandItemCache.java

@@ -12,12 +12,13 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class HandItemCache implements Runnable {
     public static boolean CACHE = false;
-    private static ConcurrentHashMap<UUID, Item> handCache = new ConcurrentHashMap<>();
+    private static Map<UUID, Item> handCache = new ConcurrentHashMap<>();
     private static Field GET_DAMAGE;
     private static Method GET_ID;
     private static ItemGrabber grabber;

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

@@ -59,6 +59,11 @@ public class SpongeConfigAPI extends Config implements ViaVersionConfig {
         return getBoolean("hologram-patch", false);
     }
 
+    @Override
+    public boolean isPistonAnimationPatch() {
+        return getBoolean("piston-animation-patch", false);
+    }
+
     @Override
     public boolean isBossbarPatch() {
         return getBoolean("bossbar-patch", true);