Merge pull request #845 from creeper123123321/dev

1.13-pre5

bukkit/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.4.0-1.13-pre1</version>
+        <version>1.4.0-1.13-pre5</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

bungee/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.4.0-1.13-pre1</version>
+        <version>1.4.0-1.13-pre5</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

common/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.4.0-1.13-pre1</version>
+        <version>1.4.0-1.13-pre5</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>

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

@@ -48,7 +48,7 @@ public class ProtocolPipeline extends Protocol {
 
     /**
      * Add a protocol to the current pipeline
-     * This will call the .init method.
+     * This will call the Protocol#init method.
      *
      * @param protocol The protocol to add to the end
      */
@@ -56,6 +56,9 @@ public class ProtocolPipeline extends Protocol {
         if (protocolList != null) {
             protocolList.add(protocol);
             protocol.init(userConnection);
+            // Move BaseProtocol to end, so the login packets can be modified by other protocols
+            protocolList.remove(ProtocolRegistry.BASE_PROTOCOL);
+            protocolList.add(ProtocolRegistry.BASE_PROTOCOL);
         } else {
             throw new NullPointerException("Tried to add protocol to early");
         }
@@ -71,19 +74,21 @@ public class ProtocolPipeline extends Protocol {
 
         // Apply protocols
         packetWrapper.apply(direction, state, 0, protocols);
-
         super.transform(direction, state, packetWrapper);
 
         if (Via.getManager().isDebug()) {
             // Debug packet
             String packet = "UNKNOWN";
 
-            // For 1.8/1.9 server version, eventually we'll probably get an API for this...
-            if (ProtocolRegistry.SERVER_PROTOCOL >= ProtocolVersion.v1_8.getId() &&
-                    ProtocolRegistry.SERVER_PROTOCOL <= ProtocolVersion.v1_9_3.getId()) {
 
+            int serverProtocol = userConnection.get(ProtocolInfo.class).getServerProtocolVersion();
+            int clientProtocol = userConnection.get(ProtocolInfo.class).getProtocolVersion();
+
+            // For 1.8/1.9 server version, eventually we'll probably get an API for this...
+            if (serverProtocol >= ProtocolVersion.v1_8.getId() &&
+                    serverProtocol <= ProtocolVersion.v1_9_3.getId()) {
                 PacketType type;
-                if (ProtocolRegistry.SERVER_PROTOCOL <= ProtocolVersion.v1_8.getId()) {
+                if (serverProtocol <= ProtocolVersion.v1_8.getId()) {
                     if (direction == Direction.INCOMING) {
                         type = PacketType.findNewPacket(state, direction, originalID);
                     } else {
@@ -108,7 +113,7 @@ public class ProtocolPipeline extends Protocol {
                     packet = type.name();
                 }
             }
-            String name = packet + "[" + userConnection.get(ProtocolInfo.class).getProtocolVersion() + "]";
+            String name = packet + "[" + clientProtocol + "]";
             ViaPlatform platform = Via.getPlatform();
 
             String actualUsername = packetWrapper.user().get(ProtocolInfo.class).getUsername();

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

@@ -62,7 +62,7 @@ public class ProtocolVersion {
         register(v1_12 = new ProtocolVersion(335, "1.12"));
         register(v1_12_1 = new ProtocolVersion(338, "1.12.1"));
         register(v1_12_2 = new ProtocolVersion(340, "1.12.2"));
-        register(v1_13 = new ProtocolVersion(383, "1.13-pre1"));
+        register(v1_13 = new ProtocolVersion(387, "1.13-pre5"));
         register(unknown = new ProtocolVersion(-1, "UNKNOWN"));
     }
 

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

@@ -53,6 +53,8 @@ public abstract class Type<T> implements ByteBufReader<T>, ByteBufWriter<T> {
     /* Variable Types */
     public static final Type<Integer> VAR_INT = new VarIntType();
     public static final Type<Integer[]> VAR_INT_ARRAY = new ArrayType<>(Type.VAR_INT);
+    public static final Type<Long> VAR_LONG = new VarLongType();
+    public static final Type<Long[]> VAR_LONG_ARRAY = new ArrayType<>(Type.VAR_LONG);
     /* Special Types */
     public static final Type<Void> NOTHING = new VoidType(); // This is purely used for remapping.
     /* MC Types */

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

@@ -0,0 +1,65 @@
+package us.myles.ViaVersion.api.type.types;
+
+import io.netty.buffer.ByteBuf;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.api.type.TypeConverter;
+
+public class VarLongType extends Type<Long> implements TypeConverter<Long> {
+
+    public VarLongType() {
+        super("VarLong", Long.class);
+    }
+
+    @Override
+    public void write(ByteBuf buffer, Long object) {
+        int part;
+        while (true) {
+            part = (int) (object & 0x7F);
+
+            object >>>= 7;
+            if (object != 0) {
+                part |= 0x80;
+            }
+
+            buffer.writeByte(part);
+
+            if (object == 0) {
+                break;
+            }
+        }
+    }
+
+    @Override
+    public Long read(ByteBuf buffer) {
+        long out = 0;
+        int bytes = 0;
+        byte in;
+        while (true) {
+            in = buffer.readByte();
+
+            out |= (in & 0x7F) << (bytes++ * 7);
+
+            if (bytes > 10) { // 10 is maxBytes
+                throw new RuntimeException("VarLong too big");
+            }
+
+            if ((in & 0x80) != 0x80) {
+                break;
+            }
+        }
+
+        return out;
+    }
+
+
+    @Override
+    public Long from(Object o) {
+        if (o instanceof Number) {
+            return ((Number) o).longValue();
+        }
+        if (o instanceof Boolean) {
+            return ((Boolean) o) ? 1L : 0L;
+        }
+        return (Long) o;
+    }
+}

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

@@ -28,6 +28,7 @@ import java.util.List;
 import java.util.UUID;
 import java.util.logging.Level;
 
+// TODO Make it work on 1.13 servers
 public class BaseProtocol extends Protocol {
 
     @Override
@@ -177,6 +178,7 @@ public class BaseProtocol extends Protocol {
                         }
                         // Choose the pipe
                         int protocol = Via.getManager().getProviders().get(VersionProvider.class).getServerProtocol(wrapper.user());
+                        info.setServerProtocolVersion(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)
@@ -259,7 +261,7 @@ public class BaseProtocol extends Protocol {
     }
 
     public static String addDashes(String trimmedUUID) {
-        StringBuffer idBuff = new StringBuffer(trimmedUUID);
+        StringBuilder idBuff = new StringBuilder(trimmedUUID);
         idBuff.insert(20, '-');
         idBuff.insert(16, '-');
         idBuff.insert(12, '-');

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

@@ -14,6 +14,7 @@ import java.util.UUID;
 public class ProtocolInfo extends StoredObject {
     private State state = State.HANDSHAKE;
     private int protocolVersion = -1;
+    private int serverProtocolVersion = -1;
     private String username;
     private UUID uuid;
     private ProtocolPipeline pipeline;

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/ProtocolSnapshotTo1_12_2.java

@@ -5,6 +5,8 @@ import net.md_5.bungee.chat.ComponentSerializer;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.entities.Entity1_13Types;
+import us.myles.ViaVersion.api.minecraft.Position;
+import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.platform.providers.ViaProviders;
 import us.myles.ViaVersion.api.protocol.Protocol;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
@@ -23,7 +25,7 @@ import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.providers.Painting
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.BlockStorage;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.EntityTracker;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.TabCompleteTracker;
-import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.type.Particle1_13Type;
+import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.types.Particle1_13Type;
 
 import java.util.Map;
 
@@ -37,6 +39,16 @@ public class ProtocolSnapshotTo1_12_2 extends Protocol {
         );
     }
 
+    public static final PacketHandler POS_TO_3_INT = new PacketHandler() {
+        @Override
+        public void handle(PacketWrapper wrapper) throws Exception {
+            Position position = wrapper.read(Type.POSITION);
+            wrapper.write(Type.INT, position.getX().intValue());
+            wrapper.write(Type.INT, position.getY().intValue());
+            wrapper.write(Type.INT, position.getZ().intValue());
+        }
+    };
+
     static {
         MappingData.init();
     }
@@ -54,6 +66,12 @@ public class ProtocolSnapshotTo1_12_2 extends Protocol {
 
         // Outgoing packets
 
+        // New packet 0x0 - Login Plugin Message
+        registerOutgoing(State.LOGIN, 0x0, 0x1);
+        registerOutgoing(State.LOGIN, 0x1, 0x2);
+        registerOutgoing(State.LOGIN, 0x2, 0x3);
+        registerOutgoing(State.LOGIN, 0x3, 0x4);
+
         // Statistics
         registerOutgoing(State.PLAY, 0x07, 0x07, new PacketRemapper() {
             @Override
@@ -406,6 +424,22 @@ public class ProtocolSnapshotTo1_12_2 extends Protocol {
         // New packet 0x53 - Tags
 
         // Incoming packets
+
+        // New packet 0x0 - Login Plugin Message
+        registerIncoming(State.LOGIN, -1, 0x0, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        wrapper.cancel();
+                    }
+                });
+            }
+        });
+        registerIncoming(State.LOGIN, 0x0, 0x1);
+        registerIncoming(State.LOGIN, 0x1, 0x2);
+
         registerIncoming(State.PLAY, 0x2, 0x1);
         registerIncoming(State.PLAY, 0x3, 0x2);
         registerIncoming(State.PLAY, 0x4, 0x3);
@@ -441,8 +475,47 @@ public class ProtocolSnapshotTo1_12_2 extends Protocol {
             }
         });
 
+        // New 0x0A - Edit book -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x0a, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        Item item = wrapper.read(Type.FLAT_ITEM);
+                        boolean isSigning = wrapper.read(Type.BOOLEAN);
+
+                        InventoryPackets.toServer(item);
+
+                        wrapper.write(Type.STRING, isSigning ? "MC|BSign" : "MC|BEdit"); // Channel
+                        wrapper.write(Type.ITEM, item);
+                    }
+                });
+            }
+        });
+        registerIncoming(State.PLAY, 0x0b, 0x0c);
+        registerIncoming(State.PLAY, 0x0A, 0x0B);
+        registerIncoming(State.PLAY, 0x0c, 0x0d);
+        registerIncoming(State.PLAY, 0x0d, 0x0e);
+        registerIncoming(State.PLAY, 0x0e, 0x0f);
+        registerIncoming(State.PLAY, 0x0f, 0x10);
+        registerIncoming(State.PLAY, 0x10, 0x11);
+        registerIncoming(State.PLAY, 0x11, 0x12);
+        // New 0x13 - Pick Item -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x13, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|PickItem"); // Channel
+                    }
+                });
+            }
+        });
+
         // Craft recipe request
-        registerIncoming(State.PLAY, 0x12, 0x12, new PacketRemapper() {
+        registerIncoming(State.PLAY, 0x12, 0x14, new PacketRemapper() {
             @Override
             public void registerMap() {
                 handler(new PacketHandler() {
@@ -455,8 +528,12 @@ public class ProtocolSnapshotTo1_12_2 extends Protocol {
             }
         });
 
+        registerIncoming(State.PLAY, 0x13, 0x15);
+        registerIncoming(State.PLAY, 0x14, 0x16);
+        registerIncoming(State.PLAY, 0x15, 0x17);
+        registerIncoming(State.PLAY, 0x16, 0x18);
         // Recipe Book Data
-        registerIncoming(State.PLAY, 0x17, 0x17, new PacketRemapper() {
+        registerIncoming(State.PLAY, 0x17, 0x19, new PacketRemapper() {
             @Override
             public void registerMap() {
                 map(Type.VAR_INT); // 0 - Type
@@ -476,6 +553,173 @@ public class ProtocolSnapshotTo1_12_2 extends Protocol {
                 });
             }
         });
+
+
+        // New 0x1A - Name Item -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x1A, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|ItemName"); // Channel
+                    }
+                });
+            }
+        });
+
+        registerIncoming(State.PLAY, 0x18, 0x1B);
+        registerIncoming(State.PLAY, 0x19, 0x1C);
+
+        // New 0x1D - Select Trade -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x1D, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|TrSel"); // Channel
+                    }
+                });
+                map(Type.VAR_INT, Type.INT); // Slot
+            }
+        });
+        // New 0x1E - Set Beacon Effect -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x1E, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|Beacon"); // Channel
+                    }
+                });
+                map(Type.VAR_INT, Type.INT); // Primary Effect
+                map(Type.VAR_INT, Type.INT); // Secondary Effect
+            }
+        });
+
+        registerIncoming(State.PLAY, 0x1A, 0x1F);
+
+        // New 0x20 - Update Command Block -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x20, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|AutoCmd");
+                    }
+                });
+                handler(POS_TO_3_INT);
+                map(Type.STRING); // Command
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        int mode = wrapper.read(Type.VAR_INT);
+                        byte flags = wrapper.read(Type.BYTE);
+
+                        String stringMode = mode == 0 ? "SEQUENCE"
+                                : mode == 1 ? "AUTO"
+                                : "REDSTONE";
+
+                        wrapper.write(Type.BOOLEAN, (flags & 0x1) != 0); // Track output
+                        wrapper.write(Type.STRING, stringMode);
+                        wrapper.write(Type.BOOLEAN, (flags & 0x2) != 0); // Is conditional
+                        wrapper.write(Type.BOOLEAN, (flags & 0x4) != 0); // Automatic
+                    }
+                });
+            }
+        });
+        // New 0x21 - Update Command Block Minecart -> Plugin Message
+        registerIncoming(State.PLAY, 0x09, 0x21, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|AdvCmd");
+                    }
+                });
+                map(Type.VAR_INT, Type.INT); // Entity Id
+            }
+        });
+
+        // 0x1B -> 0x22 in InventoryPackets
+
+        // New 0x23 - Update Structure Block -> Message Channel
+        registerIncoming(State.PLAY, 0x09, 0x23, new PacketRemapper() {
+            @Override
+            public void registerMap() {
+                create(new ValueCreator() {
+                    @Override
+                    public void write(PacketWrapper wrapper) throws Exception {
+                        wrapper.write(Type.STRING, "MC|Struct"); // Channel
+                    }
+                });
+                handler(POS_TO_3_INT);
+                map(Type.VAR_INT, new ValueTransformer<Integer, Byte>(Type.BYTE) { // Action
+                    @Override
+                    public Byte transform(PacketWrapper wrapper, Integer action) throws Exception {
+                        return (byte) (action + 1);
+                    }
+                }); // Action
+                map(Type.VAR_INT, new ValueTransformer<Integer, String>(Type.STRING) {
+                    @Override
+                    public String transform(PacketWrapper wrapper, Integer mode) throws Exception {
+                        return mode == 0 ? "SAVE"
+                                : mode == 1 ? "LOAD"
+                                : mode == 2 ? "CORNER"
+                                : "DATA";
+                    }
+                });
+                map(Type.STRING); // Name
+                map(Type.BYTE, Type.INT); // Offset X
+                map(Type.BYTE, Type.INT); // Offset Y
+                map(Type.BYTE, Type.INT); // Offset Z
+                map(Type.BYTE, Type.INT); // Size X
+                map(Type.BYTE, Type.INT); // Size Y
+                map(Type.BYTE, Type.INT); // Size Z
+                map(Type.VAR_INT, new ValueTransformer<Integer, String>(Type.STRING) { // Mirror
+                    @Override
+                    public String transform(PacketWrapper wrapper, Integer mirror) throws Exception {
+                        return mirror == 0 ? "NONE"
+                                : mirror == 1 ? "LEFT_RIGHT"
+                                : "FRONT_BACK";
+                    }
+                });
+                map(Type.VAR_INT, new ValueTransformer<Integer, String>(Type.STRING) { // Rotation
+                    @Override
+                    public String transform(PacketWrapper wrapper, Integer rotation) throws Exception {
+                        return rotation == 0 ? "NONE"
+                                : rotation == 1 ? "CLOCKWISE_90"
+                                : rotation == 2 ? "CLOCKWISE_180"
+                                : "COUNTERCLOCKWISE_90";
+                    }
+                });
+                map(Type.STRING);
+                handler(new PacketHandler() {
+                    @Override
+                    public void handle(PacketWrapper wrapper) throws Exception {
+                        float integrity = wrapper.read(Type.FLOAT);
+                        long seed = wrapper.read(Type.VAR_LONG);
+                        byte flags = wrapper.read(Type.BYTE);
+
+                        wrapper.write(Type.BOOLEAN, (flags & 0x1) != 0); // Ignore Entities
+                        wrapper.write(Type.BOOLEAN, (flags & 0x2) != 0); // Show air
+                        wrapper.write(Type.BOOLEAN, (flags & 0x4) != 0); // Show bounding box
+                        wrapper.write(Type.FLOAT, integrity);
+                        wrapper.write(Type.VAR_LONG, seed);
+                    }
+                });
+            }
+        });
+
+        registerIncoming(State.PLAY, 0x1C, 0x24);
+        registerIncoming(State.PLAY, 0x1D, 0x25);
+        registerIncoming(State.PLAY, 0x1E, 0x26);
+        registerIncoming(State.PLAY, 0x1F, 0x27);
+        registerIncoming(State.PLAY, 0x20, 0x28);
     }
 
     @Override

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/packets/InventoryPackets.java

@@ -1,6 +1,7 @@
 package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.packets;
 
 import com.github.steveice10.opennbt.tag.builtin.*;
+import com.google.common.base.Joiner;
 import com.google.common.base.Optional;
 import us.myles.ViaVersion.api.PacketWrapper;
 import us.myles.ViaVersion.api.minecraft.item.Item;
@@ -14,7 +15,9 @@ import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.data.MappingData;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.data.SoundSource;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.data.SpawnEggRewriter;
 
-import java.util.Map;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
 
 public class InventoryPackets {
     private static String NBT_TAG_NAME;
@@ -100,35 +103,54 @@ public class InventoryPackets {
                             }
 
                             wrapper.set(Type.BYTE, 0, flags); // Update flags
-                        }
+                            return;
-                        if (channel.equalsIgnoreCase("MC|TrList")) {
+                        } else if (channel.equalsIgnoreCase("MC|TrList")) {
+                            channel = "minecraft:trader_list";
                             wrapper.passthrough(Type.INT); // Passthrough Window ID
 
                             int size = wrapper.passthrough(Type.UNSIGNED_BYTE);
                             for (int i = 0; i < size; i++) {
                                 // Input Item
-                                Item input = wrapper.read(Type.ITEM);
+                                Item input = wrapper.passthrough(Type.ITEM);
-                                toClient(input);
+                                InventoryPackets.toClient(input);
-                                wrapper.write(Type.ITEM, input);
                                 // Output Item
-                                Item output = wrapper.read(Type.ITEM);
+                                Item output = wrapper.passthrough(Type.ITEM);
-                                toClient(output);
+                                InventoryPackets.toClient(output);
-                                wrapper.write(Type.ITEM, output);
 
                                 boolean secondItem = wrapper.passthrough(Type.BOOLEAN); // Has second item
                                 if (secondItem) {
                                     // Second Item
-                                    Item second = wrapper.read(Type.ITEM);
+                                    Item second = wrapper.passthrough(Type.ITEM);
-                                    toClient(second);
+                                    InventoryPackets.toClient(second);
-                                    wrapper.write(Type.ITEM, second);
                                 }
 
                                 wrapper.passthrough(Type.BOOLEAN); // Trade disabled
                                 wrapper.passthrough(Type.INT); // Number of tools uses
                                 wrapper.passthrough(Type.INT); // Maximum number of trade uses
                             }
+                        } else {
+                            String originalChannel = channel;
+                            channel = getNewPluginChannelId(channel).orNull();
+                            if (channel == null) {
+                                System.out.println("Plugin message cancelled " + originalChannel); // TODO remove this debug
+                                wrapper.cancel();
+                                return;
+                            } else if (channel.equals("minecraft:register") || channel.equals("minecraft:unregister")) {
+                                String[] channels = new String(wrapper.read(Type.REMAINING_BYTES), StandardCharsets.UTF_8).split("\0");
+                                List<String> rewrittenChannels = new ArrayList<>();
+                                for (int i = 0; i < channels.length; i++) {
+                                    String rewritten = getNewPluginChannelId(channels[i]).orNull();
+                                    if (rewritten != null)
+                                        rewrittenChannels.add(rewritten);
+                                    else
+                                        System.out.println("Ignoring plugin channel in REGISTER: " + channels[i]);
+                                }
+                                wrapper.write(Type.REMAINING_BYTES, Joiner.on('\0').join(rewrittenChannels).getBytes(StandardCharsets.UTF_8));
+                            }
                         }
+                        wrapper.set(Type.STRING, 0, channel);
                     }
+                    // TODO Fix trading GUI
                 });
             }
         });
@@ -179,7 +201,7 @@ public class InventoryPackets {
         );
 
         // Creative Inventory Action
-        protocol.registerIncoming(State.PLAY, 0x1B, 0x1B, new PacketRemapper() {
+        protocol.registerIncoming(State.PLAY, 0x1B, 0x22, new PacketRemapper() {
                     @Override
                     public void registerMap() {
                         map(Type.SHORT); // 0 - Slot
@@ -198,6 +220,7 @@ public class InventoryPackets {
     }
 
     // TODO CLEANUP / SMARTER REWRITE SYSTEM
+    // TODO Rewrite identifiers
     public static void toClient(Item item) {
         if (item == null) return;
 
@@ -420,4 +443,22 @@ public class InventoryPackets {
                 || id == 442 // shield
                 || id == 443; // elytra
     }
+
+    public static Optional<String> getNewPluginChannelId(String old) {
+        if (old.equalsIgnoreCase("MC|TrList"))
+            return Optional.of("minecraft:trader_list");
+        if (old.equalsIgnoreCase("MC|Brand"))
+            return Optional.of("minecraft:brand");
+        if (old.equalsIgnoreCase("MC|BOpen"))
+            return Optional.of("minecraft:book_open");
+        if (old.equalsIgnoreCase("MC|DebugPath"))
+            return Optional.of("minecraft:debug/paths");
+        if (old.equalsIgnoreCase("MC|DebugNeighborsUpdate"))
+            return Optional.of("minecraft:debug/neighbors_update");
+        if (old.equalsIgnoreCase("REGISTER"))
+            return Optional.of("minecraft:register");
+        if (old.equalsIgnoreCase("UNREGISTER"))
+            return Optional.of("minecraft:unregister");
+        return Optional.absent();
+    }
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/packets/WorldPackets.java

@@ -22,7 +22,7 @@ import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.data.ParticleRewri
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.providers.BlockEntityProvider;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.providers.PaintingProvider;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.BlockStorage;
-import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.type.Chunk1_13Type;
+import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.types.Chunk1_13Type;
 
 public class WorldPackets {
     public static void register(Protocol protocol) {

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/providers/blockentities/BannerHandler.java

@@ -8,11 +8,11 @@ import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.providers.BlockEnt
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.BlockStorage;
 
 public class BannerHandler implements BlockEntityProvider.BlockEntityHandler {
-    private final int WALL_BANNER_START = 7092; // 4 each
+    private final int WALL_BANNER_START = 7110; // 4 each
-    private final int WALL_BANNER_STOP = 7155;
+    private final int WALL_BANNER_STOP = 7173;
 
-    private final int BANNER_START = 6836; // 16 each
+    private final int BANNER_START = 6854; // 16 each
-    private final int BANNER_STOP = 7091;
+    private final int BANNER_STOP = 7109;
 
     @Override
     public int transform(UserConnection user, CompoundTag tag) {

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/providers/blockentities/BedHandler.java

@@ -20,7 +20,7 @@ public class BedHandler implements BlockEntityProvider.BlockEntityHandler {
         }
 
         //                                              RED_BED + FIRST_BED
-        int blockId = storage.get(position).getOriginal() - 954 + 730;
+        int blockId = storage.get(position).getOriginal() - 972 + 748;
 
         int color = (int) tag.get("color").getValue();
         blockId += (color * 16);

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/providers/blockentities/FlowerPotHandler.java

@@ -12,28 +12,28 @@ public class FlowerPotHandler implements BlockEntityProvider.BlockEntityHandler
     private static final Map<Pair<String, Integer>, Integer> flowers = new ConcurrentHashMap<>();
 
     static {
-        register("minecraft:air",            0, 5247);
+        register("minecraft:air",            0, 5265);
-        register("minecraft:sapling",        0, 5248);
+        register("minecraft:sapling",        0, 5266);
-        register("minecraft:sapling",        1, 5249);
+        register("minecraft:sapling",        1, 5267);
-        register("minecraft:sapling",        2, 5250);
+        register("minecraft:sapling",        2, 5268);
-        register("minecraft:sapling",        3, 5251);
+        register("minecraft:sapling",        3, 5269);
-        register("minecraft:sapling",        4, 5252);
+        register("minecraft:sapling",        4, 5270);
-        register("minecraft:sapling",        5, 5253);
+        register("minecraft:sapling",        5, 5271);
-        register("minecraft:tallgrass",      2, 5254);
+        register("minecraft:tallgrass",      2, 5272);
-        register("minecraft:yellow_flower",  0, 5255);
+        register("minecraft:yellow_flower",  0, 5273);
-        register("minecraft:red_flower",     0, 5256);
+        register("minecraft:red_flower",     0, 5274);
-        register("minecraft:red_flower",     1, 5257);
+        register("minecraft:red_flower",     1, 5275);
-        register("minecraft:red_flower",     2, 5258);
+        register("minecraft:red_flower",     2, 5276);
-        register("minecraft:red_flower",     3, 5259);
+        register("minecraft:red_flower",     3, 5277);
-        register("minecraft:red_flower",     4, 5260);
+        register("minecraft:red_flower",     4, 5278);
-        register("minecraft:red_flower",     5, 5261);
+        register("minecraft:red_flower",     5, 5279);
-        register("minecraft:red_flower",     6, 5262);
+        register("minecraft:red_flower",     6, 5280);
-        register("minecraft:red_flower",     7, 5263);
+        register("minecraft:red_flower",     7, 5281);
-        register("minecraft:red_flower",     8, 5264);
+        register("minecraft:red_flower",     8, 5282);
-        register("minecraft:red_mushroom",   0, 5265);
+        register("minecraft:red_mushroom",   0, 5283);
-        register("minecraft:brown_mushroom", 0, 5266);
+        register("minecraft:brown_mushroom", 0, 5284);
-        register("minecraft:deadbush",       0, 5267);
+        register("minecraft:deadbush",       0, 5285);
-        register("minecraft:cactus",         0, 5268);
+        register("minecraft:cactus",         0, 5286);
 
     }
 

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/providers/blockentities/SkullHandler.java

@@ -8,8 +8,8 @@ import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.providers.BlockEnt
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.BlockStorage;
 
 public class SkullHandler implements BlockEntityProvider.BlockEntityHandler {
-    private final int SKULL_WALL_START = 5429;
+    private final int SKULL_WALL_START = 5447;
-    private final int SKULL_END = 5548;
+    private final int SKULL_END = 5566;
     @Override
     public int transform(UserConnection user, CompoundTag tag) {
         BlockStorage storage = user.get(BlockStorage.class);

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/storage/BlockStorage.java

@@ -17,24 +17,24 @@ public class BlockStorage extends StoredObject {
 
     static {
         // Flower pots
-        whitelist.add(5247);
+        whitelist.add(5266);
 
         // Add those red beds
         for (int i = 0; i < 16; i++)
-            whitelist.add(954 + i);
+            whitelist.add(972 + i);
 
         // Add the white banners
         for (int i = 0; i < 20; i++)
-            whitelist.add(6836 + i);
+            whitelist.add(6854 + i);
 
         // Add the white wall banners
         for (int i = 0; i < 4; i++) {
-            whitelist.add(7092 + i);
+            whitelist.add(7110 + i);
         }
 
         // Skeleton skulls
         for (int i = 0; i < 5; i++)
-            whitelist.add(5429 + i);
+            whitelist.add(5447 + i);
     }
 
     private Map<Position, ReplacementData> blocks = new ConcurrentHashMap<>();

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/types/Chunk1_13Type.java

@@ -1,4 +1,4 @@
-package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.type;
+package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.types;
 
 import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
 import io.netty.buffer.ByteBuf;
@@ -19,6 +19,7 @@ import java.util.Arrays;
 import java.util.BitSet;
 import java.util.List;
 
+// todo 1.13-pre2 direct pallete changes
 public class Chunk1_13Type extends PartialType<Chunk, ClientWorld> {
     public Chunk1_13Type(ClientWorld param) {
         super(param, Chunk.class);
@@ -57,6 +58,7 @@ public class Chunk1_13Type extends PartialType<Chunk, ClientWorld> {
         byte[] biomeData = groundUp ? new byte[256] : null;
         if (groundUp) {
             for (int i = 0; i < 256; i++){
+                // todo use int in Chunk?
                 biomeData[i] = (byte) input.readInt();
             }
         }

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/types/Particle1_13Type.java

@@ -1,4 +1,4 @@
-package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.type;
+package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.types;
 
 import io.netty.buffer.ByteBuf;
 import us.myles.ViaVersion.api.type.Type;

jar/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.4.0-1.13-pre1</version>
+        <version>1.4.0-1.13-pre5</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>1.4.0-1.13-pre1</version>
+    <version>1.4.0-1.13-pre5</version>
     <packaging>pom</packaging>
 
     <name>viaversion-parent</name>

sponge-legacy/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.4.0-1.13-pre1</version>
+        <version>1.4.0-1.13-pre5</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

sponge/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <artifactId>viaversion-parent</artifactId>
         <groupId>us.myles</groupId>
-        <version>1.4.0-1.13-pre1</version>
+        <version>1.4.0-1.13-pre5</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

sponge/src/main/java/us/myles/ViaVersion/sponge/commands/SpongeCommandHandler.java

@@ -27,7 +27,7 @@ public class SpongeCommandHandler extends ViaCommandHandler implements CommandCa
     }
 
     public List<String> getSuggestions(CommandSource source, String arguments) throws CommandException {
-        String[] args = arguments.length() > 0 ? arguments.split(" ") : new String[0];
+        String[] args = arguments.split(" "); // ViaCommandHandler handles empty String in array
         return onTabComplete(new SpongeCommandSender(source), args);
     }