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

Example 66 with PacketRemapper

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

the class BlockItemPackets1_17 method registerPackets.

@Override
protected void registerPackets() {
    BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
    new RecipeRewriter1_16(protocol).registerDefaultHandler(ClientboundPackets1_17.DECLARE_RECIPES);
    registerSetCooldown(ClientboundPackets1_17.COOLDOWN);
    registerWindowItems(ClientboundPackets1_17.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
    registerSetSlot(ClientboundPackets1_17.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
    registerEntityEquipmentArray(ClientboundPackets1_17.ENTITY_EQUIPMENT, Type.FLAT_VAR_INT_ITEM);
    registerTradeList(ClientboundPackets1_17.TRADE_LIST, Type.FLAT_VAR_INT_ITEM);
    registerAdvancements(ClientboundPackets1_17.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
    blockRewriter.registerAcknowledgePlayerDigging(ClientboundPackets1_17.ACKNOWLEDGE_PLAYER_DIGGING);
    blockRewriter.registerBlockAction(ClientboundPackets1_17.BLOCK_ACTION);
    blockRewriter.registerEffect(ClientboundPackets1_17.EFFECT, 1010, 2001);
    registerCreativeInvAction(ServerboundPackets1_16_2.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
    protocol.registerServerbound(ServerboundPackets1_16_2.EDIT_BOOK, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> handleItemToServer(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)));
        }
    });
    // TODO This will cause desync issues for players under certain circumstances, but mostly works:tm:
    protocol.registerServerbound(ServerboundPackets1_16_2.CLICK_WINDOW, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Window Id
            map(Type.UNSIGNED_BYTE);
            // Slot
            map(Type.SHORT);
            // Button
            map(Type.BYTE);
            // Action id - removed
            map(Type.SHORT, Type.NOTHING);
            // Mode
            map(Type.VAR_INT);
            handler(wrapper -> {
                // The 1.17 client would check the entire inventory for changes before -> after a click and send the changed slots here
                // Empty array of slot+item
                wrapper.write(Type.VAR_INT, 0);
                // Expected is the carried item after clicking, old clients send the clicked one (*mostly* being the same)
                handleItemToServer(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM));
            });
        }
    });
    protocol.registerServerbound(ServerboundPackets1_16_2.WINDOW_CONFIRMATION, null, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                wrapper.cancel();
                if (!ViaBackwards.getConfig().handlePingsAsInvAcknowledgements()) {
                    return;
                }
                // Handle ping packet replacement
                short inventoryId = wrapper.read(Type.UNSIGNED_BYTE);
                short confirmationId = wrapper.read(Type.SHORT);
                boolean accepted = wrapper.read(Type.BOOLEAN);
                if (inventoryId == 0 && accepted && wrapper.user().get(PingRequests.class).removeId(confirmationId)) {
                    PacketWrapper pongPacket = wrapper.create(ServerboundPackets1_17.PONG);
                    pongPacket.write(Type.INT, (int) confirmationId);
                    pongPacket.sendToServer(Protocol1_16_4To1_17.class);
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.SPAWN_PARTICLE, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Particle id
            map(Type.INT);
            // Long distance
            map(Type.BOOLEAN);
            // X
            map(Type.DOUBLE);
            // Y
            map(Type.DOUBLE);
            // Z
            map(Type.DOUBLE);
            // Offset X
            map(Type.FLOAT);
            // Offset Y
            map(Type.FLOAT);
            // Offset Z
            map(Type.FLOAT);
            // Particle data
            map(Type.FLOAT);
            // Particle count
            map(Type.INT);
            handler(wrapper -> {
                int id = wrapper.get(Type.INT, 0);
                if (id == 16) {
                    // R
                    wrapper.passthrough(Type.FLOAT);
                    // G
                    wrapper.passthrough(Type.FLOAT);
                    // B
                    wrapper.passthrough(Type.FLOAT);
                    // Scale
                    wrapper.passthrough(Type.FLOAT);
                    // Dust color transition -> Dust
                    // R
                    wrapper.read(Type.FLOAT);
                    // G
                    wrapper.read(Type.FLOAT);
                    // B
                    wrapper.read(Type.FLOAT);
                } else if (id == 37) {
                    // Vibration signal - no nice mapping possible without tracking entity positions and doing particle tasks
                    wrapper.set(Type.INT, 0, -1);
                    wrapper.cancel();
                }
            });
            handler(getSpawnParticleHandler(Type.FLAT_VAR_INT_ITEM));
        }
    });
    protocol.mergePacket(ClientboundPackets1_17.WORLD_BORDER_SIZE, ClientboundPackets1_16_2.WORLD_BORDER, 0);
    protocol.mergePacket(ClientboundPackets1_17.WORLD_BORDER_LERP_SIZE, ClientboundPackets1_16_2.WORLD_BORDER, 1);
    protocol.mergePacket(ClientboundPackets1_17.WORLD_BORDER_CENTER, ClientboundPackets1_16_2.WORLD_BORDER, 2);
    protocol.mergePacket(ClientboundPackets1_17.WORLD_BORDER_INIT, ClientboundPackets1_16_2.WORLD_BORDER, 3);
    protocol.mergePacket(ClientboundPackets1_17.WORLD_BORDER_WARNING_DELAY, ClientboundPackets1_16_2.WORLD_BORDER, 4);
    protocol.mergePacket(ClientboundPackets1_17.WORLD_BORDER_WARNING_DISTANCE, ClientboundPackets1_16_2.WORLD_BORDER, 5);
    // The Great Shrunkening
    // Chunk sections *will* be lost ¯\_(ツ)_/¯
    protocol.registerClientbound(ClientboundPackets1_17.UPDATE_LIGHT, new PacketRemapper() {

        @Override
        public void registerMap() {
            // X
            map(Type.VAR_INT);
            // Z
            map(Type.VAR_INT);
            // Trust edges
            map(Type.BOOLEAN);
            handler(wrapper -> {
                EntityTracker tracker = wrapper.user().getEntityTracker(Protocol1_16_4To1_17.class);
                int startFromSection = Math.max(0, -(tracker.currentMinY() >> 4));
                long[] skyLightMask = wrapper.read(Type.LONG_ARRAY_PRIMITIVE);
                long[] blockLightMask = wrapper.read(Type.LONG_ARRAY_PRIMITIVE);
                int cutSkyLightMask = cutLightMask(skyLightMask, startFromSection);
                int cutBlockLightMask = cutLightMask(blockLightMask, startFromSection);
                wrapper.write(Type.VAR_INT, cutSkyLightMask);
                wrapper.write(Type.VAR_INT, cutBlockLightMask);
                long[] emptySkyLightMask = wrapper.read(Type.LONG_ARRAY_PRIMITIVE);
                long[] emptyBlockLightMask = wrapper.read(Type.LONG_ARRAY_PRIMITIVE);
                wrapper.write(Type.VAR_INT, cutLightMask(emptySkyLightMask, startFromSection));
                wrapper.write(Type.VAR_INT, cutLightMask(emptyBlockLightMask, startFromSection));
                writeLightArrays(wrapper, BitSet.valueOf(skyLightMask), cutSkyLightMask, startFromSection, tracker.currentWorldSectionHeight());
                writeLightArrays(wrapper, BitSet.valueOf(blockLightMask), cutBlockLightMask, startFromSection, tracker.currentWorldSectionHeight());
            });
        }

        private void writeLightArrays(PacketWrapper wrapper, BitSet bitMask, int cutBitMask, int startFromSection, int sectionHeight) throws Exception {
            // Length - throw it away
            wrapper.read(Type.VAR_INT);
            List<byte[]> light = new ArrayList<>();
            // Remove lower bounds
            for (int i = 0; i < startFromSection; i++) {
                if (bitMask.get(i)) {
                    wrapper.read(Type.BYTE_ARRAY_PRIMITIVE);
                }
            }
            // Add the important 18 sections
            for (int i = 0; i < 18; i++) {
                if (isSet(cutBitMask, i)) {
                    light.add(wrapper.read(Type.BYTE_ARRAY_PRIMITIVE));
                }
            }
            // Remove upper bounds
            for (int i = startFromSection + 18; i < sectionHeight + 2; i++) {
                if (bitMask.get(i)) {
                    wrapper.read(Type.BYTE_ARRAY_PRIMITIVE);
                }
            }
            // Aaand we're done
            for (byte[] bytes : light) {
                wrapper.write(Type.BYTE_ARRAY_PRIMITIVE, bytes);
            }
        }

        private boolean isSet(int mask, int i) {
            return (mask & (1 << i)) != 0;
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.MULTI_BLOCK_CHANGE, new PacketRemapper() {

        public void registerMap() {
            // Chunk pos
            map(Type.LONG);
            // Suppress light updates
            map(Type.BOOLEAN);
            handler((wrapper) -> {
                // Remove sections below y 0 and above 255
                long chunkPos = wrapper.get(Type.LONG, 0);
                int chunkY = (int) (chunkPos << 44 >> 44);
                if (chunkY < 0 || chunkY > 15) {
                    wrapper.cancel();
                    return;
                }
                BlockChangeRecord[] records = wrapper.passthrough(Type.VAR_LONG_BLOCK_CHANGE_RECORD_ARRAY);
                for (BlockChangeRecord record : records) {
                    record.setBlockId(protocol.getMappingData().getNewBlockStateId(record.getBlockId()));
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.BLOCK_CHANGE, new PacketRemapper() {

        public void registerMap() {
            map(Type.POSITION1_14);
            map(Type.VAR_INT);
            handler((wrapper) -> {
                int y = wrapper.get(Type.POSITION1_14, 0).getY();
                if (y < 0 || y > 255) {
                    wrapper.cancel();
                    return;
                }
                wrapper.set(Type.VAR_INT, 0, protocol.getMappingData().getNewBlockStateId(wrapper.get(Type.VAR_INT, 0)));
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.CHUNK_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                EntityTracker tracker = wrapper.user().getEntityTracker(Protocol1_16_4To1_17.class);
                int currentWorldSectionHeight = tracker.currentWorldSectionHeight();
                Chunk chunk = wrapper.read(new Chunk1_17Type(currentWorldSectionHeight));
                wrapper.write(new Chunk1_16_2Type(), chunk);
                // Cut sections
                int startFromSection = Math.max(0, -(tracker.currentMinY() >> 4));
                chunk.setBiomeData(Arrays.copyOfRange(chunk.getBiomeData(), startFromSection * 64, (startFromSection * 64) + 1024));
                chunk.setBitmask(cutMask(chunk.getChunkMask(), startFromSection, false));
                chunk.setChunkMask(null);
                ChunkSection[] sections = Arrays.copyOfRange(chunk.getSections(), startFromSection, startFromSection + 16);
                chunk.setSections(sections);
                CompoundTag heightMaps = chunk.getHeightMap();
                for (Tag heightMapTag : heightMaps.values()) {
                    LongArrayTag heightMap = (LongArrayTag) heightMapTag;
                    int[] heightMapData = new int[256];
                    int bitsPerEntry = MathUtil.ceilLog2((currentWorldSectionHeight << 4) + 1);
                    // Shift back to 0 based and clamp to normal height with 9 bits
                    CompactArrayUtil.iterateCompactArrayWithPadding(bitsPerEntry, heightMapData.length, heightMap.getValue(), (i, v) -> heightMapData[i] = MathUtil.clamp(v + tracker.currentMinY(), 0, 255));
                    heightMap.setValue(CompactArrayUtil.createCompactArrayWithPadding(9, heightMapData.length, i -> heightMapData[i]));
                }
                for (int i = 0; i < 16; i++) {
                    ChunkSection section = sections[i];
                    if (section == null)
                        continue;
                    for (int j = 0; j < section.getPaletteSize(); j++) {
                        int old = section.getPaletteEntry(j);
                        section.setPaletteEntry(j, protocol.getMappingData().getNewBlockStateId(old));
                    }
                }
                chunk.getBlockEntities().removeIf(compound -> {
                    NumberTag tag = compound.get("y");
                    return tag != null && tag.asInt() < 0;
                });
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.BLOCK_ENTITY_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                int y = wrapper.passthrough(Type.POSITION1_14).getY();
                if (y < 0 || y > 255) {
                    wrapper.cancel();
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.BLOCK_BREAK_ANIMATION, new PacketRemapper() {

        @Override
        public void registerMap() {
            map(Type.VAR_INT);
            handler(wrapper -> {
                int y = wrapper.passthrough(Type.POSITION1_14).getY();
                if (y < 0 || y > 255) {
                    wrapper.cancel();
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.MAP_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Map ID
            map(Type.VAR_INT);
            // Scale
            map(Type.BYTE);
            // Tracking position
            handler(wrapper -> wrapper.write(Type.BOOLEAN, true));
            // Locked
            map(Type.BOOLEAN);
            handler(wrapper -> {
                boolean hasMarkers = wrapper.read(Type.BOOLEAN);
                if (!hasMarkers) {
                    // Array size
                    wrapper.write(Type.VAR_INT, 0);
                } else {
                    MapColorRewriter.getRewriteHandler(MapColorRewrites::getMappedColor).handle(wrapper);
                }
            });
        }
    });
}

Example 67 with PacketRemapper

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

the class EntityPackets1_17 method registerPackets.

@Override
protected void registerPackets() {
    registerTrackerWithData(ClientboundPackets1_17.SPAWN_ENTITY, Entity1_17Types.FALLING_BLOCK);
    registerSpawnTracker(ClientboundPackets1_17.SPAWN_MOB);
    registerTracker(ClientboundPackets1_17.SPAWN_EXPERIENCE_ORB, Entity1_17Types.EXPERIENCE_ORB);
    registerTracker(ClientboundPackets1_17.SPAWN_PAINTING, Entity1_17Types.PAINTING);
    registerTracker(ClientboundPackets1_17.SPAWN_PLAYER, Entity1_17Types.PLAYER);
    registerMetadataRewriter(ClientboundPackets1_17.ENTITY_METADATA, Types1_17.METADATA_LIST, Types1_16.METADATA_LIST);
    protocol.registerClientbound(ClientboundPackets1_17.REMOVE_ENTITY, ClientboundPackets1_16_2.DESTROY_ENTITIES, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                int entityId = wrapper.read(Type.VAR_INT);
                tracker(wrapper.user()).removeEntity(entityId);
                // Write into single value array
                int[] array = { entityId };
                wrapper.write(Type.VAR_INT_ARRAY_PRIMITIVE, array);
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.JOIN_GAME, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Entity ID
            map(Type.INT);
            // Hardcore
            map(Type.BOOLEAN);
            // Gamemode
            map(Type.UNSIGNED_BYTE);
            // Previous Gamemode
            map(Type.BYTE);
            // Worlds
            map(Type.STRING_ARRAY);
            // Dimension registry
            map(Type.NBT);
            // Current dimension data
            map(Type.NBT);
            // World
            map(Type.STRING);
            handler(wrapper -> {
                byte previousGamemode = wrapper.get(Type.BYTE, 0);
                if (previousGamemode == -1) {
                    // "Unset" gamemode removed
                    wrapper.set(Type.BYTE, 0, (byte) 0);
                }
            });
            handler(getTrackerHandler(Entity1_17Types.PLAYER, Type.INT));
            handler(worldDataTrackerHandler(1));
            handler(wrapper -> {
                CompoundTag registry = wrapper.get(Type.NBT, 0);
                CompoundTag biomeRegistry = registry.get("minecraft:worldgen/biome");
                ListTag biomes = biomeRegistry.get("value");
                for (Tag biome : biomes) {
                    CompoundTag biomeCompound = ((CompoundTag) biome).get("element");
                    StringTag category = biomeCompound.get("category");
                    if (category.getValue().equalsIgnoreCase("underground")) {
                        category.setValue("none");
                    }
                }
                CompoundTag dimensionRegistry = registry.get("minecraft:dimension_type");
                ListTag dimensions = dimensionRegistry.get("value");
                for (Tag dimension : dimensions) {
                    CompoundTag dimensionCompound = ((CompoundTag) dimension).get("element");
                    reduceExtendedHeight(dimensionCompound, false);
                }
                reduceExtendedHeight(wrapper.get(Type.NBT, 1), true);
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.RESPAWN, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Dimension data
            map(Type.NBT);
            // World
            map(Type.STRING);
            handler(worldDataTrackerHandler(0));
            handler(wrapper -> reduceExtendedHeight(wrapper.get(Type.NBT, 0), true));
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.PLAYER_POSITION, new PacketRemapper() {

        @Override
        public void registerMap() {
            map(Type.DOUBLE);
            map(Type.DOUBLE);
            map(Type.DOUBLE);
            map(Type.FLOAT);
            map(Type.FLOAT);
            map(Type.BYTE);
            map(Type.VAR_INT);
            handler(wrapper -> {
                // Dismount vehicle ¯\_(ツ)_/¯
                wrapper.read(Type.BOOLEAN);
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_17.ENTITY_PROPERTIES, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Entity id
            map(Type.VAR_INT);
            handler(wrapper -> {
                // Collection length
                wrapper.write(Type.INT, wrapper.read(Type.VAR_INT));
            });
        }
    });
    // TODO translatables
    protocol.mergePacket(ClientboundPackets1_17.COMBAT_ENTER, ClientboundPackets1_16_2.COMBAT_EVENT, 0);
    protocol.mergePacket(ClientboundPackets1_17.COMBAT_END, ClientboundPackets1_16_2.COMBAT_EVENT, 1);
    protocol.mergePacket(ClientboundPackets1_17.COMBAT_KILL, ClientboundPackets1_16_2.COMBAT_EVENT, 2);
}

Example 68 with PacketRemapper

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

the class BlockItemPackets1_15 method registerPackets.

@Override
protected void registerPackets() {
    BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
    new RecipeRewriter1_14(protocol).registerDefaultHandler(ClientboundPackets1_15.DECLARE_RECIPES);
    protocol.registerServerbound(ServerboundPackets1_14.EDIT_BOOK, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> handleItemToServer(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM)));
        }
    });
    registerSetCooldown(ClientboundPackets1_15.COOLDOWN);
    registerWindowItems(ClientboundPackets1_15.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY);
    registerSetSlot(ClientboundPackets1_15.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
    registerTradeList(ClientboundPackets1_15.TRADE_LIST, Type.FLAT_VAR_INT_ITEM);
    registerEntityEquipment(ClientboundPackets1_15.ENTITY_EQUIPMENT, Type.FLAT_VAR_INT_ITEM);
    registerAdvancements(ClientboundPackets1_15.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
    registerClickWindow(ServerboundPackets1_14.CLICK_WINDOW, Type.FLAT_VAR_INT_ITEM);
    registerCreativeInvAction(ServerboundPackets1_14.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
    blockRewriter.registerAcknowledgePlayerDigging(ClientboundPackets1_15.ACKNOWLEDGE_PLAYER_DIGGING);
    blockRewriter.registerBlockAction(ClientboundPackets1_15.BLOCK_ACTION);
    blockRewriter.registerBlockChange(ClientboundPackets1_15.BLOCK_CHANGE);
    blockRewriter.registerMultiBlockChange(ClientboundPackets1_15.MULTI_BLOCK_CHANGE);
    protocol.registerClientbound(ClientboundPackets1_15.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_15Type());
                    wrapper.write(new Chunk1_14Type(), chunk);
                    if (chunk.isFullChunk()) {
                        int[] biomeData = chunk.getBiomeData();
                        int[] newBiomeData = new int[256];
                        for (int i = 0; i < 4; ++i) {
                            for (int j = 0; j < 4; ++j) {
                                int x = j << 2;
                                int z = i << 2;
                                int newIndex = z << 4 | x;
                                int oldIndex = i << 2 | j;
                                int biome = biomeData[oldIndex];
                                for (int k = 0; k < 4; k++) {
                                    int offX = newIndex + (k << 4);
                                    for (int l = 0; l < 4; l++) {
                                        newBiomeData[offX + l] = biome;
                                    }
                                }
                            }
                        }
                        chunk.setBiomeData(newBiomeData);
                    }
                    for (int i = 0; i < chunk.getSections().length; i++) {
                        ChunkSection section = chunk.getSections()[i];
                        if (section == null)
                            continue;
                        for (int j = 0; j < section.getPaletteSize(); j++) {
                            int old = section.getPaletteEntry(j);
                            int newId = protocol.getMappingData().getNewBlockStateId(old);
                            section.setPaletteEntry(j, newId);
                        }
                    }
                }
            });
        }
    });
    blockRewriter.registerEffect(ClientboundPackets1_15.EFFECT, 1010, 2001);
    protocol.registerClientbound(ClientboundPackets1_15.SPAWN_PARTICLE, new PacketRemapper() {

        @Override
        public void registerMap() {
            // 0 - Particle ID
            map(Type.INT);
            // 1 - Long Distance
            map(Type.BOOLEAN);
            // 2 - X
            map(Type.DOUBLE, Type.FLOAT);
            // 3 - Y
            map(Type.DOUBLE, Type.FLOAT);
            // 4 - Z
            map(Type.DOUBLE, Type.FLOAT);
            // 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) {
                        Item item = handleItemToClient(wrapper.read(Type.FLAT_VAR_INT_ITEM));
                        wrapper.write(Type.FLAT_VAR_INT_ITEM, item);
                    }
                    int mappedId = protocol.getMappingData().getNewParticleId(id);
                    if (id != mappedId) {
                        wrapper.set(Type.INT, 0, mappedId);
                    }
                }
            });
        }
    });
}

Example 69 with PacketRemapper

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

the class Protocol1_15_2To1_16 method registerPackets.

@Override
protected void registerPackets() {
    executeAsyncAfterLoaded(Protocol1_16To1_15_2.class, MAPPINGS::load);
    translatableRewriter.registerBossBar(ClientboundPackets1_16.BOSSBAR);
    translatableRewriter.registerCombatEvent(ClientboundPackets1_16.COMBAT_EVENT);
    translatableRewriter.registerDisconnect(ClientboundPackets1_16.DISCONNECT);
    translatableRewriter.registerTabList(ClientboundPackets1_16.TAB_LIST);
    translatableRewriter.registerTitle(ClientboundPackets1_16.TITLE);
    translatableRewriter.registerPing();
    new CommandRewriter1_16(this).registerDeclareCommands(ClientboundPackets1_16.DECLARE_COMMANDS);
    (blockItemPackets = new BlockItemPackets1_16(this)).register();
    entityRewriter.register();
    registerClientbound(State.STATUS, 0x00, 0x00, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                String original = wrapper.passthrough(Type.STRING);
                JsonObject object = GsonUtil.getGson().fromJson(original, JsonObject.class);
                JsonElement description = object.get("description");
                if (description == null)
                    return;
                translatableRewriter.processText(description);
                wrapper.set(Type.STRING, 0, object.toString());
            });
        }
    });
    registerClientbound(ClientboundPackets1_16.CHAT_MESSAGE, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> translatableRewriter.processText(wrapper.passthrough(Type.COMPONENT)));
            map(Type.BYTE);
            // Sender
            map(Type.UUID, Type.NOTHING);
        }
    });
    registerClientbound(ClientboundPackets1_16.OPEN_WINDOW, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Window Id
            map(Type.VAR_INT);
            // Window Type
            map(Type.VAR_INT);
            handler(wrapper -> translatableRewriter.processText(wrapper.passthrough(Type.COMPONENT)));
            handler(wrapper -> {
                int windowType = wrapper.get(Type.VAR_INT, 1);
                if (windowType == 20) {
                    // Smithing table
                    // Open anvil inventory
                    wrapper.set(Type.VAR_INT, 1, 7);
                } else if (windowType > 20) {
                    wrapper.set(Type.VAR_INT, 1, --windowType);
                }
            });
        }
    });
    SoundRewriter soundRewriter = new SoundRewriter(this);
    soundRewriter.registerSound(ClientboundPackets1_16.SOUND);
    soundRewriter.registerSound(ClientboundPackets1_16.ENTITY_SOUND);
    soundRewriter.registerNamedSound(ClientboundPackets1_16.NAMED_SOUND);
    soundRewriter.registerStopSound(ClientboundPackets1_16.STOP_SOUND);
    // Login success
    registerClientbound(State.LOGIN, 0x02, 0x02, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                // Transform int array to plain string
                UUID uuid = wrapper.read(Type.UUID_INT_ARRAY);
                wrapper.write(Type.STRING, uuid.toString());
            });
        }
    });
    new TagRewriter(this).register(ClientboundPackets1_16.TAGS, RegistryType.ENTITY);
    new StatisticsRewriter(this).register(ClientboundPackets1_16.STATISTICS);
    registerServerbound(ServerboundPackets1_14.ENTITY_ACTION, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                // player id
                wrapper.passthrough(Type.VAR_INT);
                int action = wrapper.passthrough(Type.VAR_INT);
                if (action == 0) {
                    wrapper.user().get(PlayerSneakStorage.class).setSneaking(true);
                } else if (action == 1) {
                    wrapper.user().get(PlayerSneakStorage.class).setSneaking(false);
                }
            });
        }
    });
    registerServerbound(ServerboundPackets1_14.INTERACT_ENTITY, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                // Entity Id
                wrapper.passthrough(Type.VAR_INT);
                int action = wrapper.passthrough(Type.VAR_INT);
                if (action == 0 || action == 2) {
                    if (action == 2) {
                        // Location
                        wrapper.passthrough(Type.FLOAT);
                        wrapper.passthrough(Type.FLOAT);
                        wrapper.passthrough(Type.FLOAT);
                    }
                    // Hand
                    wrapper.passthrough(Type.VAR_INT);
                }
                // New boolean: Whether the client is sneaking
                wrapper.write(Type.BOOLEAN, wrapper.user().get(PlayerSneakStorage.class).isSneaking());
            });
        }
    });
    registerServerbound(ServerboundPackets1_14.PLAYER_ABILITIES, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                byte flags = wrapper.read(Type.BYTE);
                // Only take the isFlying value (everything else has been removed and wasn't used anyways)
                flags &= 2;
                wrapper.write(Type.BYTE, flags);
                wrapper.read(Type.FLOAT);
                wrapper.read(Type.FLOAT);
            });
        }
    });
    cancelServerbound(ServerboundPackets1_14.UPDATE_JIGSAW_BLOCK);
}

Example 70 with PacketRemapper

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

the class BlockItemPackets1_18 method registerPackets.

@Override
protected void registerPackets() {
    new RecipeRewriter1_16(protocol).registerDefaultHandler(ClientboundPackets1_18.DECLARE_RECIPES);
    registerSetCooldown(ClientboundPackets1_18.COOLDOWN);
    registerWindowItems1_17_1(ClientboundPackets1_18.WINDOW_ITEMS, Type.FLAT_VAR_INT_ITEM_ARRAY_VAR_INT, Type.FLAT_VAR_INT_ITEM);
    registerSetSlot1_17_1(ClientboundPackets1_18.SET_SLOT, Type.FLAT_VAR_INT_ITEM);
    registerEntityEquipmentArray(ClientboundPackets1_18.ENTITY_EQUIPMENT, Type.FLAT_VAR_INT_ITEM);
    registerTradeList(ClientboundPackets1_18.TRADE_LIST, Type.FLAT_VAR_INT_ITEM);
    registerAdvancements(ClientboundPackets1_18.ADVANCEMENTS, Type.FLAT_VAR_INT_ITEM);
    registerClickWindow1_17_1(ServerboundPackets1_17.CLICK_WINDOW, Type.FLAT_VAR_INT_ITEM);
    protocol.registerClientbound(ClientboundPackets1_18.EFFECT, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Effect id
            map(Type.INT);
            // Location
            map(Type.POSITION1_14);
            // Data
            map(Type.INT);
            handler(wrapper -> {
                int id = wrapper.get(Type.INT, 0);
                int data = wrapper.get(Type.INT, 1);
                if (id == 1010) {
                    // Play record
                    wrapper.set(Type.INT, 1, protocol.getMappingData().getNewItemId(data));
                }
            });
        }
    });
    registerCreativeInvAction(ServerboundPackets1_17.CREATIVE_INVENTORY_ACTION, Type.FLAT_VAR_INT_ITEM);
    protocol.registerClientbound(ClientboundPackets1_18.SPAWN_PARTICLE, new PacketRemapper() {

        @Override
        public void registerMap() {
            // Particle id
            map(Type.INT);
            // Override limiter
            map(Type.BOOLEAN);
            // X
            map(Type.DOUBLE);
            // Y
            map(Type.DOUBLE);
            // Z
            map(Type.DOUBLE);
            // Offset X
            map(Type.FLOAT);
            // Offset Y
            map(Type.FLOAT);
            // Offset Z
            map(Type.FLOAT);
            // Max speed
            map(Type.FLOAT);
            // Particle Count
            map(Type.INT);
            handler(wrapper -> {
                int id = wrapper.get(Type.INT, 0);
                if (id == 3) {
                    // Block marker
                    int blockState = wrapper.read(Type.VAR_INT);
                    if (blockState == 7786) {
                        // Light block
                        wrapper.set(Type.INT, 0, 3);
                    } else {
                        // Else assume barrier block
                        wrapper.set(Type.INT, 0, 2);
                    }
                    return;
                }
                ParticleMappings mappings = protocol.getMappingData().getParticleMappings();
                if (mappings.isBlockParticle(id)) {
                    int data = wrapper.passthrough(Type.VAR_INT);
                    wrapper.set(Type.VAR_INT, 0, protocol.getMappingData().getNewBlockStateId(data));
                } else if (mappings.isItemParticle(id)) {
                    handleItemToClient(wrapper.passthrough(Type.FLAT_VAR_INT_ITEM));
                }
                int newId = protocol.getMappingData().getNewParticleId(id);
                if (newId != id) {
                    wrapper.set(Type.INT, 0, newId);
                }
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_18.BLOCK_ENTITY_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            map(Type.POSITION1_14);
            handler(wrapper -> {
                final int id = wrapper.read(Type.VAR_INT);
                final CompoundTag tag = wrapper.read(Type.NBT);
                final int mappedId = BlockEntityIds.mappedId(id);
                if (mappedId == -1) {
                    wrapper.cancel();
                    return;
                }
                final String identifier = protocol.getMappingData().blockEntities().get(id);
                if (identifier == null) {
                    wrapper.cancel();
                    return;
                }
                // The 1.18 server doesn't include the id and positions (x, y, z) in the NBT anymore
                // If those were the only fields on the block entity (e.g.: skull, bed), we'll receive a null NBT
                // We initialize one and add the missing fields, so it can be handled correctly down the line
                final CompoundTag newTag = tag == null ? new CompoundTag() : tag;
                final Position pos = wrapper.get(Type.POSITION1_14, 0);
                // The protocol converters downstream rely on this field, let's add it back
                newTag.put("id", new StringTag("minecraft:" + identifier));
                // Weird glitches happen with the 1.17 client and below if these fields are missing
                // Some examples are block entity models becoming invisible (e.g.: signs, banners)
                newTag.put("x", new IntTag(pos.x()));
                newTag.put("y", new IntTag(pos.y()));
                newTag.put("z", new IntTag(pos.z()));
                handleSpawner(id, newTag);
                wrapper.write(Type.UNSIGNED_BYTE, (short) mappedId);
                wrapper.write(Type.NBT, newTag);
            });
        }
    });
    protocol.registerClientbound(ClientboundPackets1_18.CHUNK_DATA, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(wrapper -> {
                final EntityTracker tracker = protocol.getEntityRewriter().tracker(wrapper.user());
                final Chunk1_18Type chunkType = new Chunk1_18Type(tracker.currentWorldSectionHeight(), MathUtil.ceilLog2(protocol.getMappingData().getBlockStateMappings().size()), MathUtil.ceilLog2(tracker.biomesSent()));
                final Chunk oldChunk = wrapper.read(chunkType);
                final ChunkSection[] sections = oldChunk.getSections();
                final BitSet mask = new BitSet(oldChunk.getSections().length);
                final int[] biomeData = new int[sections.length * ChunkSection.BIOME_SIZE];
                int biomeIndex = 0;
                for (int j = 0; j < sections.length; j++) {
                    final ChunkSection section = sections[j];
                    // Write biome palette into biome array
                    final DataPalette biomePalette = section.palette(PaletteType.BIOMES);
                    for (int i = 0; i < ChunkSection.BIOME_SIZE; i++) {
                        biomeData[biomeIndex++] = biomePalette.idAt(i);
                    }
                    // Rewrite to empty section
                    if (section.getNonAirBlocksCount() == 0) {
                        sections[j] = null;
                    } else {
                        mask.set(j);
                    }
                }
                final List<CompoundTag> blockEntityTags = new ArrayList<>(oldChunk.blockEntities().size());
                for (final BlockEntity blockEntity : oldChunk.blockEntities()) {
                    final String id = protocol.getMappingData().blockEntities().get(blockEntity.typeId());
                    if (id == null) {
                        // Shrug
                        continue;
                    }
                    final CompoundTag tag;
                    if (blockEntity.tag() != null) {
                        tag = blockEntity.tag();
                        handleSpawner(blockEntity.typeId(), tag);
                    } else {
                        tag = new CompoundTag();
                    }
                    blockEntityTags.add(tag);
                    tag.put("x", new IntTag((oldChunk.getX() << 4) + blockEntity.sectionX()));
                    tag.put("y", new IntTag(blockEntity.y()));
                    tag.put("z", new IntTag((oldChunk.getZ() << 4) + blockEntity.sectionZ()));
                    tag.put("id", new StringTag("minecraft:" + id));
                }
                final Chunk chunk = new BaseChunk(oldChunk.getX(), oldChunk.getZ(), true, false, mask, oldChunk.getSections(), biomeData, oldChunk.getHeightMap(), blockEntityTags);
                wrapper.write(new Chunk1_17Type(tracker.currentWorldSectionHeight()), chunk);
                // Create and send light packet first
                final PacketWrapper lightPacket = wrapper.create(ClientboundPackets1_17_1.UPDATE_LIGHT);
                lightPacket.write(Type.VAR_INT, chunk.getX());
                lightPacket.write(Type.VAR_INT, chunk.getZ());
                // Trust edges
                lightPacket.write(Type.BOOLEAN, wrapper.read(Type.BOOLEAN));
                // Sky light mask
                lightPacket.write(Type.LONG_ARRAY_PRIMITIVE, wrapper.read(Type.LONG_ARRAY_PRIMITIVE));
                // Block light mask
                lightPacket.write(Type.LONG_ARRAY_PRIMITIVE, wrapper.read(Type.LONG_ARRAY_PRIMITIVE));
                // Empty sky light mask
                lightPacket.write(Type.LONG_ARRAY_PRIMITIVE, wrapper.read(Type.LONG_ARRAY_PRIMITIVE));
                // Empty block light mask
                lightPacket.write(Type.LONG_ARRAY_PRIMITIVE, wrapper.read(Type.LONG_ARRAY_PRIMITIVE));
                final int skyLightLength = wrapper.read(Type.VAR_INT);
                lightPacket.write(Type.VAR_INT, skyLightLength);
                for (int i = 0; i < skyLightLength; i++) {
                    lightPacket.write(Type.BYTE_ARRAY_PRIMITIVE, wrapper.read(Type.BYTE_ARRAY_PRIMITIVE));
                }
                final int blockLightLength = wrapper.read(Type.VAR_INT);
                lightPacket.write(Type.VAR_INT, blockLightLength);
                for (int i = 0; i < blockLightLength; i++) {
                    lightPacket.write(Type.BYTE_ARRAY_PRIMITIVE, wrapper.read(Type.BYTE_ARRAY_PRIMITIVE));
                }
                lightPacket.send(Protocol1_17_1To1_18.class);
            });
        }
    });
    protocol.cancelClientbound(ClientboundPackets1_18.SET_SIMULATION_DISTANCE);
}