Examples with PacketRemapper com.viaversion.viaversion.api.protocol.remapper.PacketRemapper used on opensource projects

Example 86 with PacketRemapper

use of com.viaversion.viaversion.api.protocol.remapper.PacketRemapper in project ViaVersion by ViaVersion.

the class WorldPackets method register.

public static void register(Protocol1_15To1_14_4 protocol) {
    BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
    blockRewriter.registerBlockAction(ClientboundPackets1_14.BLOCK_ACTION);
    blockRewriter.registerBlockChange(ClientboundPackets1_14.BLOCK_CHANGE);
    blockRewriter.registerMultiBlockChange(ClientboundPackets1_14.MULTI_BLOCK_CHANGE);
    blockRewriter.registerAcknowledgePlayerDigging(ClientboundPackets1_14.ACKNOWLEDGE_PLAYER_DIGGING);
    protocol.registerClientbound(ClientboundPackets1_14.CHUNK_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    Chunk chunk = wrapper.read(new Chunk1_14Type());
                    wrapper.write(new Chunk1_15Type(), chunk);
                    if (chunk.isFullChunk()) {
                        int[] biomeData = chunk.getBiomeData();
                        int[] newBiomeData = new int[1024];
                        if (biomeData != null) {
                            // Now in 4x4x4 areas - take the biome of each "middle"
                            for (int i = 0; i < 4; ++i) {
                                for (int j = 0; j < 4; ++j) {
                                    int x = (j << 2) + 2;
                                    int z = (i << 2) + 2;
                                    int oldIndex = (z << 4 | x);
                                    newBiomeData[i << 2 | j] = biomeData[oldIndex];
                                }
                            }
                            // ... and copy it to the new y layers
                            for (int i = 1; i < 64; ++i) {
                                System.arraycopy(newBiomeData, 0, newBiomeData, i * 16, 16);
                            }
                        }
                        chunk.setBiomeData(newBiomeData);
                    }
                    for (int s = 0; s < chunk.getSections().length; s++) {
                        ChunkSection section = chunk.getSections()[s];
                        if (section == null)
                            continue;
                        for (int i = 0; i < section.getPaletteSize(); i++) {
                            int old = section.getPaletteEntry(i);
                            int newId = protocol.getMappingData().getNewBlockStateId(old);
                            section.setPaletteEntry(i, newId);
                        }
                    }
                }
            });
        }
    });
    blockRewriter.registerEffect(ClientboundPackets1_14.EFFECT, 1010, 2001);
    protocol.registerClientbound(ClientboundPackets1_14.SPAWN_PARTICLE, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Particle ID
            map(Type.INT);
            // 1 - Long Distance
            map(Type.BOOLEAN);
            // 2 - X
            map(Type.FLOAT, Type.DOUBLE);
            // 3 - Y
            map(Type.FLOAT, Type.DOUBLE);
            // 4 - Z
            map(Type.FLOAT, Type.DOUBLE);
            // 5 - Offset X
            map(Type.FLOAT);
            // 6 - Offset Y
            map(Type.FLOAT);
            // 7 - Offset Z
            map(Type.FLOAT);
            // 8 - Particle Data
            map(Type.FLOAT);
            // 9 - Particle Count
            map(Type.INT);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    int id = wrapper.get(Type.INT, 0);
                    if (id == 3 || id == 23) {
                        int data = wrapper.passthrough(Type.VAR_INT);
                        wrapper.set(Type.VAR_INT, 0, protocol.getMappingData().getNewBlockStateId(data));
                    } else if (id == 32) {
                        protocol.getItemRewriter().handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM));
                    }
                }
            });
        }
    });
}

Example 87 with PacketRemapper

use of com.viaversion.viaversion.api.protocol.remapper.PacketRemapper in project ViaVersion by ViaVersion.

the class EntityPackets method register.

public static void register(Protocol1_16To1_15_2 protocol) {
    MetadataRewriter1_16To1_15_2 metadataRewriter = protocol.get(MetadataRewriter1_16To1_15_2.class);
    // Spawn lightning -> Spawn entity
    protocol.registerClientbound(ClientboundPackets1_15.SPAWN_GLOBAL_ENTITY, ClientboundPackets1_16.SPAWN_ENTITY, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                int entityId = wrapper.passthrough(Type.VAR_INT);
                byte type = wrapper.read(Type.BYTE);
                if (type != 1) {
                    // Cancel if not lightning/invalid id
                    wrapper.cancel();
                    return;
                }
                wrapper.user().getEntityTracker(Protocol1_16To1_15_2.class).addEntity(entityId, Entity1_16Types.LIGHTNING_BOLT);
                // uuid
                wrapper.write(Type.UUID, UUID.randomUUID());
                // entity type
                wrapper.write(Type.VAR_INT, Entity1_16Types.LIGHTNING_BOLT.getId());
                // x
                wrapper.passthrough(Type.DOUBLE);
                // y
                wrapper.passthrough(Type.DOUBLE);
                // z
                wrapper.passthrough(Type.DOUBLE);
                // yaw
                wrapper.write(Type.BYTE, (byte) 0);
                // pitch
                wrapper.write(Type.BYTE, (byte) 0);
                // data
                wrapper.write(Type.INT, 0);
                // velocity
                wrapper.write(Type.SHORT, (short) 0);
                // velocity
                wrapper.write(Type.SHORT, (short) 0);
                // velocity
                wrapper.write(Type.SHORT, (short) 0);
            });
        }
    });
    metadataRewriter.registerTrackerWithData(ClientboundPackets1_15.SPAWN_ENTITY, Entity1_16Types.FALLING_BLOCK);
    metadataRewriter.registerTracker(ClientboundPackets1_15.SPAWN_MOB);
    metadataRewriter.registerTracker(ClientboundPackets1_15.SPAWN_PLAYER, Entity1_16Types.PLAYER);
    metadataRewriter.registerMetadataRewriter(ClientboundPackets1_15.ENTITY_METADATA, Types1_14.METADATA_LIST, Types1_16.METADATA_LIST);
    metadataRewriter.registerRemoveEntities(ClientboundPackets1_15.DESTROY_ENTITIES);
    protocol.registerClientbound(ClientboundPackets1_15.RESPAWN, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(DIMENSION_HANDLER);
            // Seed
            map(Type.LONG);
            // Gamemode
            map(Type.UNSIGNED_BYTE);
            handler(wrapper -> {
                // Previous gamemode, set to none
                wrapper.write(Type.BYTE, (byte) -1);
                String levelType = wrapper.read(Type.STRING);
                // debug
                wrapper.write(Type.BOOLEAN, false);
                wrapper.write(Type.BOOLEAN, levelType.equals("flat"));
                // keep all playerdata
                wrapper.write(Type.BOOLEAN, true);
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_15.JOIN_GAME, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Entity ID
            map(Type.INT);
            // Gamemode
            map(Type.UNSIGNED_BYTE);
            handler(wrapper -> {
                // Previous gamemode, set to none
                wrapper.write(Type.BYTE, (byte) -1);
                // World list - only used for command completion
                wrapper.write(Type.STRING_ARRAY, Arrays.copyOf(WORLD_NAMES, WORLD_NAMES.length));
                // Dimension registry
                wrapper.write(Type.NBT, DIMENSIONS_TAG.clone());
            });
            // Dimension
            handler(DIMENSION_HANDLER);
            // Seed
            map(Type.LONG);
            // Max players
            map(Type.UNSIGNED_BYTE);
            handler(wrapper -> {
                wrapper.user().getEntityTracker(Protocol1_16To1_15_2.class).addEntity(wrapper.get(Type.INT, 0), Entity1_16Types.PLAYER);
                // level type
                final String type = wrapper.read(Type.STRING);
                // View distance
                wrapper.passthrough(Type.VAR_INT);
                // Reduced debug info
                wrapper.passthrough(Type.BOOLEAN);
                // Show death screen
                wrapper.passthrough(Type.BOOLEAN);
                // Debug
                wrapper.write(Type.BOOLEAN, false);
                wrapper.write(Type.BOOLEAN, type.equals("flat"));
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_15.ENTITY_PROPERTIES, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                wrapper.passthrough(Type.VAR_INT);
                int size = wrapper.passthrough(Type.INT);
                int actualSize = size;
                for (int i = 0; i < size; i++) {
                    // Attributes have been renamed and are now namespaced identifiers
                    String key = wrapper.read(Type.STRING);
                    String attributeIdentifier = protocol.getMappingData().getAttributeMappings().get(key);
                    if (attributeIdentifier == null) {
                        attributeIdentifier = "minecraft:" + key;
                        if (!com.viaversion.viaversion.protocols.protocol1_13to1_12_2.data.MappingData.isValid1_13Channel(attributeIdentifier)) {
                            if (!Via.getConfig().isSuppressConversionWarnings()) {
                                Via.getPlatform().getLogger().warning("Invalid attribute: " + key);
                            }
                            actualSize--;
                            wrapper.read(Type.DOUBLE);
                            int modifierSize = wrapper.read(Type.VAR_INT);
                            for (int j = 0; j < modifierSize; j++) {
                                wrapper.read(Type.UUID);
                                wrapper.read(Type.DOUBLE);
                                wrapper.read(Type.BYTE);
                            }
                            continue;
                        }
                    }
                    wrapper.write(Type.STRING, attributeIdentifier);
                    wrapper.passthrough(Type.DOUBLE);
                    int modifierSize = wrapper.passthrough(Type.VAR_INT);
                    for (int j = 0; j < modifierSize; j++) {
                        wrapper.passthrough(Type.UUID);
                        wrapper.passthrough(Type.DOUBLE);
                        wrapper.passthrough(Type.BYTE);
                    }
                }
                if (size != actualSize) {
                    wrapper.set(Type.INT, 0, actualSize);
                }
            });
        }
    });
    protocol.registerServerbound(ServerboundPackets1_16.ANIMATION, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                InventoryTracker1_16 inventoryTracker = wrapper.user().get(InventoryTracker1_16.class);
                // Don't send an arm swing if the player has an inventory opened.
                if (inventoryTracker.getInventory() != -1) {
                    wrapper.cancel();
                }
            });
        }
    });
}

Example 88 with PacketRemapper

use of com.viaversion.viaversion.api.protocol.remapper.PacketRemapper in project ViaVersion by ViaVersion.

the class Protocol1_14To1_13_2 method registerPackets.

@Override
protected void registerPackets() {
    metadataRewriter.register();
    itemRewriter.register();
    EntityPackets.register(this);
    WorldPackets.register(this);
    PlayerPackets.register(this);
    new SoundRewriter(this).registerSound(ClientboundPackets1_13.SOUND);
    new StatisticsRewriter(this).register(ClientboundPackets1_13.STATISTICS);
    ComponentRewriter componentRewriter = new ComponentRewriter1_14(this);
    componentRewriter.registerComponentPacket(ClientboundPackets1_13.CHAT_MESSAGE);
    CommandRewriter1_14 commandRewriter = new CommandRewriter1_14(this);
    commandRewriter.registerDeclareCommands(ClientboundPackets1_13.DECLARE_COMMANDS);
    registerClientbound(ClientboundPackets1_13.TAGS, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    int blockTagsSize = wrapper.read(Type.VAR_INT);
                    // block tags
                    wrapper.write(Type.VAR_INT, blockTagsSize + 6);
                    for (int i = 0; i < blockTagsSize; i++) {
                        wrapper.passthrough(Type.STRING);
                        int[] blockIds = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
                        for (int j = 0; j < blockIds.length; j++) {
                            blockIds[j] = getMappingData().getNewBlockId(blockIds[j]);
                        }
                    }
                    // Minecraft crashes if we not send signs tags
                    wrapper.write(Type.STRING, "minecraft:signs");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { getMappingData().getNewBlockId(150), getMappingData().getNewBlockId(155) });
                    wrapper.write(Type.STRING, "minecraft:wall_signs");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { getMappingData().getNewBlockId(155) });
                    wrapper.write(Type.STRING, "minecraft:standing_signs");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { getMappingData().getNewBlockId(150) });
                    // Fences and walls tags - used for block connections
                    wrapper.write(Type.STRING, "minecraft:fences");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { 189, 248, 472, 473, 474, 475 });
                    wrapper.write(Type.STRING, "minecraft:walls");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { 271, 272 });
                    wrapper.write(Type.STRING, "minecraft:wooden_fences");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { 189, 472, 473, 474, 475 });
                    int itemTagsSize = wrapper.read(Type.VAR_INT);
                    // item tags
                    wrapper.write(Type.VAR_INT, itemTagsSize + 2);
                    for (int i = 0; i < itemTagsSize; i++) {
                        wrapper.passthrough(Type.STRING);
                        int[] itemIds = wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
                        for (int j = 0; j < itemIds.length; j++) {
                            itemIds[j] = getMappingData().getNewItemId(itemIds[j]);
                        }
                    }
                    // Should fix fuel shift clicking
                    wrapper.write(Type.STRING, "minecraft:signs");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { getMappingData().getNewItemId(541) });
                    // Arrows tag (used by bow)
                    wrapper.write(Type.STRING, "minecraft:arrows");
                    wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[] { 526, 825, 826 });
                    // fluid tags
                    int fluidTagsSize = wrapper.passthrough(Type.VAR_INT);
                    for (int i = 0; i < fluidTagsSize; i++) {
                        wrapper.passthrough(Type.STRING);
                        wrapper.passthrough(Type.VAR_INT_ARRAY_PRIMITIVE);
                    }
                    // new entity tags - do we need to send this?
                    wrapper.write(Type.VAR_INT, 0);
                }
            });
        }
    });
    // Set Difficulty packet added in 19w11a
    cancelServerbound(ServerboundPackets1_14.SET_DIFFICULTY);
    // Lock Difficulty packet added in 19w11a
    cancelServerbound(ServerboundPackets1_14.LOCK_DIFFICULTY);
    // Unknown packet added in 19w13a
    cancelServerbound(ServerboundPackets1_14.UPDATE_JIGSAW_BLOCK);
}

Example 89 with PacketRemapper

use of com.viaversion.viaversion.api.protocol.remapper.PacketRemapper in project ViaVersion by ViaVersion.

the class EntityPackets method register.

public static void register(Protocol1_13To1_12_2 protocol) {
    MetadataRewriter1_13To1_12_2 metadataRewriter = protocol.get(MetadataRewriter1_13To1_12_2.class);
    protocol.registerClientbound(ClientboundPackets1_12_1.SPAWN_ENTITY, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Entity id
            map(Type.VAR_INT);
            // 1 - UUID
            map(Type.UUID);
            // 2 - Type
            map(Type.BYTE);
            // 3 - X
            map(Type.DOUBLE);
            // 4 - Y
            map(Type.DOUBLE);
            // 5 - Z
            map(Type.DOUBLE);
            // 6 - Pitch
            map(Type.BYTE);
            // 7 - Yaw
            map(Type.BYTE);
            // 8 - Data
            map(Type.INT);
            // Track Entity
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    int entityId = wrapper.get(Type.VAR_INT, 0);
                    byte type = wrapper.get(Type.BYTE, 0);
                    Entity1_13Types.EntityType entType = Entity1_13Types.getTypeFromId(type, true);
                    if (entType == null)
                        return;
                    // Register Type ID
                    wrapper.user().getEntityTracker(Protocol1_13To1_12_2.class).addEntity(entityId, entType);
                    if (entType.is(Entity1_13Types.EntityType.FALLING_BLOCK)) {
                        int oldId = wrapper.get(Type.INT, 0);
                        int combined = (((oldId & 4095) << 4) | (oldId >> 12 & 15));
                        wrapper.set(Type.INT, 0, WorldPackets.toNewId(combined));
                    }
                    // Fix ItemFrame hitbox
                    if (entType.is(Entity1_13Types.EntityType.ITEM_FRAME)) {
                        int data = wrapper.get(Type.INT, 0);
                        switch(data) {
                            // South
                            case 0:
                                data = 3;
                                break;
                            // West
                            case 1:
                                data = 4;
                                break;
                            // East
                            case 3:
                                data = 5;
                                break;
                        }
                        wrapper.set(Type.INT, 0, data);
                    }
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_12_1.SPAWN_MOB, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Entity ID
            map(Type.VAR_INT);
            // 1 - Entity UUID
            map(Type.UUID);
            // 2 - Entity Type
            map(Type.VAR_INT);
            // 3 - X
            map(Type.DOUBLE);
            // 4 - Y
            map(Type.DOUBLE);
            // 5 - Z
            map(Type.DOUBLE);
            // 6 - Yaw
            map(Type.BYTE);
            // 7 - Pitch
            map(Type.BYTE);
            // 8 - Head Pitch
            map(Type.BYTE);
            // 9 - Velocity X
            map(Type.SHORT);
            // 10 - Velocity Y
            map(Type.SHORT);
            // 11 - Velocity Z
            map(Type.SHORT);
            // 12 - Metadata
            map(Types1_12.METADATA_LIST, Types1_13.METADATA_LIST);
            handler(metadataRewriter.trackerAndRewriterHandler(Types1_13.METADATA_LIST));
        }
    });
    protocol.registerClientbound(ClientboundPackets1_12_1.SPAWN_PLAYER, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Entity ID
            map(Type.VAR_INT);
            // 1 - Player UUID
            map(Type.UUID);
            // 2 - X
            map(Type.DOUBLE);
            // 3 - Y
            map(Type.DOUBLE);
            // 4 - Z
            map(Type.DOUBLE);
            // 5 - Yaw
            map(Type.BYTE);
            // 6 - Pitch
            map(Type.BYTE);
            // 7 - Metadata
            map(Types1_12.METADATA_LIST, Types1_13.METADATA_LIST);
            handler(metadataRewriter.trackerAndRewriterHandler(Types1_13.METADATA_LIST, Entity1_13Types.EntityType.PLAYER));
        }
    });
    metadataRewriter.registerRemoveEntities(ClientboundPackets1_12_1.DESTROY_ENTITIES);
    metadataRewriter.registerMetadataRewriter(ClientboundPackets1_12_1.ENTITY_METADATA, Types1_12.METADATA_LIST, Types1_13.METADATA_LIST);
}

Example 90 with PacketRemapper

use of com.viaversion.viaversion.api.protocol.remapper.PacketRemapper in project ViaVersion by ViaVersion.

the class InventoryPackets method register.

public static void register(Protocol protocol) {
    protocol.registerClientbound(ClientboundPackets1_8.WINDOW_PROPERTY, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // 1 - Property Key
            map(Type.SHORT);
            // 2 - Property Value
            map(Type.SHORT);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    final short windowId = wrapper.get(Type.UNSIGNED_BYTE, 0);
                    final short property = wrapper.get(Type.SHORT, 0);
                    short value = wrapper.get(Type.SHORT, 1);
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    if (inventoryTracker.getInventory() != null) {
                        if (inventoryTracker.getInventory().equalsIgnoreCase("minecraft:enchanting_table")) {
                            if (property > 3 && property < 7) {
                                // Send 2 properties, splitting it into enchantID & level
                                final short level = (short) (value >> 8);
                                final short enchantID = (short) (value & 0xFF);
                                wrapper.create(wrapper.getId(), new PacketHandler() {

                                    @Override
                                    public void handle(PacketWrapper wrapper) throws Exception {
                                        wrapper.write(Type.UNSIGNED_BYTE, windowId);
                                        wrapper.write(Type.SHORT, property);
                                        wrapper.write(Type.SHORT, enchantID);
                                    }
                                }).scheduleSend(Protocol1_9To1_8.class);
                                wrapper.set(Type.SHORT, 0, (short) (property + 3));
                                wrapper.set(Type.SHORT, 1, level);
                            }
                        }
                    }
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_8.OPEN_WINDOW, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // 1 - Window Type
            map(Type.STRING);
            // 2 - Window Title
            map(Type.STRING, Protocol1_9To1_8.FIX_JSON);
            // 3 - Slot Count
            map(Type.UNSIGNED_BYTE);
            // There is a horse parameter after this, we don't handle it and let it passthrough
            // Inventory tracking
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    String inventory = wrapper.get(Type.STRING, 0);
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    inventoryTracker.setInventory(inventory);
                }
            });
            // Brewing patch
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    String inventory = wrapper.get(Type.STRING, 0);
                    if (inventory.equals("minecraft:brewing_stand")) {
                        wrapper.set(Type.UNSIGNED_BYTE, 1, (short) (wrapper.get(Type.UNSIGNED_BYTE, 1) + 1));
                    }
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_8.SET_SLOT, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // 1 - Slot ID
            map(Type.SHORT);
            // 2 - Slot Value
            map(Type.ITEM);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    Item stack = wrapper.get(Type.ITEM, 0);
                    boolean showShieldWhenSwordInHand = Via.getConfig().isShowShieldWhenSwordInHand() && Via.getConfig().isShieldBlocking();
                    // Check if it is the inventory of the player
                    if (showShieldWhenSwordInHand) {
                        InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                        EntityTracker1_9 entityTracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
                        short slotID = wrapper.get(Type.SHORT, 0);
                        byte windowId = wrapper.get(Type.UNSIGNED_BYTE, 0).byteValue();
                        // Store item in slot
                        inventoryTracker.setItemId(windowId, slotID, stack == null ? 0 : stack.identifier());
                        // Sync shield item in offhand with main hand
                        entityTracker.syncShieldWithSword();
                    }
                    ItemRewriter.toClient(stack);
                }
            });
            // Brewing patch
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    short slotID = wrapper.get(Type.SHORT, 0);
                    if (inventoryTracker.getInventory() != null) {
                        if (inventoryTracker.getInventory().equals("minecraft:brewing_stand")) {
                            if (slotID >= 4) {
                                wrapper.set(Type.SHORT, 0, (short) (slotID + 1));
                            }
                        }
                    }
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_8.WINDOW_ITEMS, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // 1 - Window Values
            map(Type.ITEM_ARRAY);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    Item[] stacks = wrapper.get(Type.ITEM_ARRAY, 0);
                    Short windowId = wrapper.get(Type.UNSIGNED_BYTE, 0);
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    EntityTracker1_9 entityTracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
                    boolean showShieldWhenSwordInHand = Via.getConfig().isShowShieldWhenSwordInHand() && Via.getConfig().isShieldBlocking();
                    for (short i = 0; i < stacks.length; i++) {
                        Item stack = stacks[i];
                        // Store items in slots
                        if (showShieldWhenSwordInHand) {
                            inventoryTracker.setItemId(windowId, i, stack == null ? 0 : stack.identifier());
                        }
                        ItemRewriter.toClient(stack);
                    }
                    // Sync shield item in offhand with main hand
                    if (showShieldWhenSwordInHand) {
                        entityTracker.syncShieldWithSword();
                    }
                }
            });
            // Brewing Patch
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    if (inventoryTracker.getInventory() != null) {
                        if (inventoryTracker.getInventory().equals("minecraft:brewing_stand")) {
                            Item[] oldStack = wrapper.get(Type.ITEM_ARRAY, 0);
                            Item[] newStack = new Item[oldStack.length + 1];
                            for (int i = 0; i < newStack.length; i++) {
                                if (i > 4) {
                                    newStack[i] = oldStack[i - 1];
                                } else {
                                    if (i != 4) {
                                        // Leave index 3 blank
                                        newStack[i] = oldStack[i];
                                    }
                                }
                            }
                            wrapper.set(Type.ITEM_ARRAY, 0, newStack);
                        }
                    }
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_8.CLOSE_WINDOW, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // Inventory tracking
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    inventoryTracker.setInventory(null);
                    inventoryTracker.resetInventory(wrapper.get(Type.UNSIGNED_BYTE, 0));
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_8.MAP_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Map ID
            map(Type.VAR_INT);
            // 1 - Map Scale
            map(Type.BYTE);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) {
                    // 2 - Show marker
                    wrapper.write(Type.BOOLEAN, true);
                }
            });
        // Everything else is passed through
        }
    });
    /* Incoming Packets */
    protocol.registerServerbound(ServerboundPackets1_9.CREATIVE_INVENTORY_ACTION, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Slot ID
            map(Type.SHORT);
            // 1 - Item
            map(Type.ITEM);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    Item stack = wrapper.get(Type.ITEM, 0);
                    boolean showShieldWhenSwordInHand = Via.getConfig().isShowShieldWhenSwordInHand() && Via.getConfig().isShieldBlocking();
                    if (showShieldWhenSwordInHand) {
                        InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                        EntityTracker1_9 entityTracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
                        short slotID = wrapper.get(Type.SHORT, 0);
                        // Update item in slot
                        inventoryTracker.setItemId((short) 0, slotID, stack == null ? 0 : stack.identifier());
                        // Sync shield item in offhand with main hand
                        entityTracker.syncShieldWithSword();
                    }
                    ItemRewriter.toServer(stack);
                }
            });
            // Elytra throw patch
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    final short slot = wrapper.get(Type.SHORT, 0);
                    boolean throwItem = (slot == 45);
                    if (throwItem) {
                        // Send a packet wiping the slot
                        wrapper.create(ClientboundPackets1_9.SET_SLOT, new PacketHandler() {

                            @Override
                            public void handle(PacketWrapper wrapper) throws Exception {
                                wrapper.write(Type.UNSIGNED_BYTE, (short) 0);
                                wrapper.write(Type.SHORT, slot);
                                wrapper.write(Type.ITEM, null);
                            }
                        }).send(Protocol1_9To1_8.class);
                        // Finally reset to simulate throwing item
                        // Set slot to -999
                        wrapper.set(Type.SHORT, 0, (short) -999);
                    }
                }
            });
        }
    });
    protocol.registerServerbound(ServerboundPackets1_9.CLICK_WINDOW, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // 1 - Slot ID
            map(Type.SHORT);
            // 2 - Button
            map(Type.BYTE);
            // 3 - Action
            map(Type.SHORT);
            // 4 - Mode
            map(Type.VAR_INT, Type.BYTE);
            // 5 - Clicked Item
            map(Type.ITEM);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    Item stack = wrapper.get(Type.ITEM, 0);
                    if (Via.getConfig().isShowShieldWhenSwordInHand()) {
                        Short windowId = wrapper.get(Type.UNSIGNED_BYTE, 0);
                        byte mode = wrapper.get(Type.BYTE, 1);
                        short hoverSlot = wrapper.get(Type.SHORT, 0);
                        byte button = wrapper.get(Type.BYTE, 0);
                        // Move items in inventory to track the sword location
                        InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                        inventoryTracker.handleWindowClick(wrapper.user(), windowId, mode, hoverSlot, button);
                    }
                    ItemRewriter.toServer(stack);
                }
            });
            // Brewing patch and elytra throw patch
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    final short windowID = wrapper.get(Type.UNSIGNED_BYTE, 0);
                    final short slot = wrapper.get(Type.SHORT, 0);
                    boolean throwItem = (slot == 45 && windowID == 0);
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    if (inventoryTracker.getInventory() != null) {
                        if (inventoryTracker.getInventory().equals("minecraft:brewing_stand")) {
                            if (slot == 4) {
                                throwItem = true;
                            }
                            if (slot > 4) {
                                wrapper.set(Type.SHORT, 0, (short) (slot - 1));
                            }
                        }
                    }
                    if (throwItem) {
                        // Send a packet wiping the slot
                        wrapper.create(ClientboundPackets1_9.SET_SLOT, new PacketHandler() {

                            @Override
                            public void handle(PacketWrapper wrapper) throws Exception {
                                wrapper.write(Type.UNSIGNED_BYTE, (short) windowID);
                                wrapper.write(Type.SHORT, slot);
                                wrapper.write(Type.ITEM, null);
                            }
                        }).scheduleSend(Protocol1_9To1_8.class);
                        // Finally reset to simulate throwing item
                        // Set button to 0
                        wrapper.set(Type.BYTE, 0, (byte) 0);
                        // Set mode to 0
                        wrapper.set(Type.BYTE, 1, (byte) 0);
                        // Set slot to -999
                        wrapper.set(Type.SHORT, 0, (short) -999);
                    }
                }
            });
        }
    });
    protocol.registerServerbound(ServerboundPackets1_9.CLOSE_WINDOW, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Window ID
            map(Type.UNSIGNED_BYTE);
            // Inventory tracking
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    InventoryTracker inventoryTracker = wrapper.user().get(InventoryTracker.class);
                    inventoryTracker.setInventory(null);
                    inventoryTracker.resetInventory(wrapper.get(Type.UNSIGNED_BYTE, 0));
                }
            });
        }
    });
    protocol.registerServerbound(ServerboundPackets1_9.HELD_ITEM_CHANGE, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Slot id
            map(Type.SHORT);
            // Blocking patch
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    boolean showShieldWhenSwordInHand = Via.getConfig().isShowShieldWhenSwordInHand() && Via.getConfig().isShieldBlocking();
                    EntityTracker1_9 entityTracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
                    if (entityTracker.isBlocking()) {
                        entityTracker.setBlocking(false);
                        if (!showShieldWhenSwordInHand) {
                            entityTracker.setSecondHand(null);
                        }
                    }
                    if (showShieldWhenSwordInHand) {
                        // Update current held item slot index
                        entityTracker.setHeldItemSlot(wrapper.get(Type.SHORT, 0));
                        // Sync shield item in offhand with main hand
                        entityTracker.syncShieldWithSword();
                    }
                }
            });
        }
    });
}