Java Code Examples for com.nukkitx.nbt.CompoundTagBuilder#tag()

/**
 * Get the Nukkit CompoundTag of the flower pot.
 * @param blockState Java BlockState of flower pot.
 * @param position Bedrock position of flower pot.
 * @return Bedrock tag of flower pot.
 */
public static CompoundTag getTag(BlockState blockState, Vector3i position) {
    CompoundTagBuilder tagBuilder = CompoundTagBuilder.builder()
            .intTag("x", position.getX())
            .intTag("y", position.getY())
            .intTag("z", position.getZ())
            .byteTag("isMovable", (byte) 1)
            .stringTag("id", "FlowerPot");
    // Get the Java name of the plant inside. e.g. minecraft:oak_sapling
    String name = BlockStateValues.getFlowerPotValues().get(blockState.getId());
    if (name != null) {
        // Get the Bedrock CompoundTag of the block.
        // This is where we need to store the *Java* name because Bedrock has six minecraft:sapling blocks with different block states.
        CompoundTag plant = BlockStateValues.getFlowerPotBlocks().get(name);
        if (plant != null) {
            tagBuilder.tag(plant.toBuilder().build("PlantBlock"));
        }
    }
    return tagBuilder.buildRootTag();
}
 

@Override
public ItemData translateToBedrock(ItemStack itemStack, ItemEntry itemEntry) {
    if (itemStack.getNbt() == null) return super.translateToBedrock(itemStack, itemEntry);

    ItemData itemData = super.translateToBedrock(itemStack, itemEntry);

    CompoundTag blockEntityTag = itemStack.getNbt().get("BlockEntityTag");
    if (blockEntityTag.contains("Patterns")) {
        ListTag patterns = blockEntityTag.get("Patterns");

        CompoundTagBuilder builder = itemData.getTag().toBuilder();
        builder.tag(convertBannerPattern(patterns));

        itemData = ItemData.of(itemData.getId(), itemData.getDamage(), itemData.getCount(), builder.buildRootTag());
    }

    return itemData;
}
 

public ItemFrameEntity(long entityId, long geyserId, EntityType entityType, Vector3f position, Vector3f motion, Vector3f rotation, HangingDirection direction) {
    super(entityId, geyserId, entityType, position, motion, rotation);
    CompoundTagBuilder builder = CompoundTag.builder();
    builder.tag(CompoundTag.builder()
            .stringTag("name", "minecraft:frame")
            .intTag("version", BlockTranslator.getBlockStateVersion())
            .tag(CompoundTag.builder()
                    .intTag("facing_direction", direction.ordinal())
                    .byteTag("item_frame_map_bit", (byte) 0)
                    .build("states"))
            .build("block"));
    builder.shortTag("id", (short) 199);
    bedrockRuntimeId = BlockTranslator.getItemFrame(builder.buildRootTag());
    bedrockPosition = Vector3i.from(position.getFloorX(), position.getFloorY(), position.getFloorZ());
}
 

@Override
public com.nukkitx.nbt.tag.CompoundTag getDefaultBedrockTag(String bedrockId, int x, int y, int z) {
    CompoundTagBuilder tagBuilder = getConstantBedrockTag(bedrockId, x, y, z).toBuilder();
    tagBuilder.tag(new com.nukkitx.nbt.tag.CompoundTag("Item1", new HashMap<>()));
    tagBuilder.tag(new com.nukkitx.nbt.tag.CompoundTag("Item2", new HashMap<>()));
    tagBuilder.tag(new com.nukkitx.nbt.tag.CompoundTag("Item3", new HashMap<>()));
    tagBuilder.tag(new com.nukkitx.nbt.tag.CompoundTag("Item4", new HashMap<>()));
    return tagBuilder.buildRootTag();
}
 

private CompoundTag getItemTag(GeyserSession session, ItemStack stack, String name, int specialPrice) {
    ItemData itemData = ItemTranslator.translateToBedrock(session, stack);
    ItemEntry itemEntry = ItemRegistry.getItem(stack);
    CompoundTagBuilder builder = CompoundTagBuilder.builder();
    builder.byteTag("Count", (byte) (Math.max(itemData.getCount() + specialPrice, 1)));
    builder.shortTag("Damage", itemData.getDamage());
    builder.shortTag("id", (short) itemEntry.getBedrockId());
    if (itemData.getTag() != null) {
        CompoundTag tag = itemData.getTag().toBuilder().build("tag");
        builder.tag(tag);
    }
    return builder.build(name);
}
 

/**
 * Returns a barrier block with custom name and lore to explain why
 * part of the inventory is unusable.
 */
public static ItemData createUnusableSpaceBlock(String description) {
    CompoundTagBuilder root = CompoundTagBuilder.builder();
    CompoundTagBuilder display = CompoundTagBuilder.builder();

    display.stringTag("Name", ChatColor.RESET + "Unusable inventory space");
    display.listTag("Lore", StringTag.class, Collections.singletonList(new StringTag("", ChatColor.RESET + ChatColor.DARK_PURPLE + description)));

    root.tag(display.build("display"));
    return ItemData.of(ItemRegistry.ITEM_ENTRIES.get(ItemRegistry.BARRIER_INDEX).getBedrockId(), (short) 0, 1, root.buildRootTag());
}
 

@Override
public void translate(ServerTradeListPacket packet, GeyserSession session) {
    Entity villager = session.getPlayerEntity();
    session.setVillagerTrades(packet.getTrades());
    villager.getMetadata().put(EntityData.TRADE_TIER, packet.getVillagerLevel() - 1);
    villager.getMetadata().put(EntityData.MAX_TRADE_TIER, 4);
    villager.getMetadata().put(EntityData.TRADE_XP, packet.getExperience());
    villager.updateBedrockMetadata(session);

    UpdateTradePacket updateTradePacket = new UpdateTradePacket();
    updateTradePacket.setTradeTier(packet.getVillagerLevel() - 1);
    updateTradePacket.setWindowId((short) packet.getWindowId());
    updateTradePacket.setWindowType((short) ContainerType.TRADING.id());
    String displayName;
    Entity realVillager = session.getEntityCache().getEntityByGeyserId(session.getLastInteractedVillagerEid());
    if (realVillager != null && realVillager.getMetadata().containsKey(EntityData.NAMETAG) && realVillager.getMetadata().getString(EntityData.NAMETAG) != null) {
        displayName = realVillager.getMetadata().getString(EntityData.NAMETAG);
    } else {
        displayName = packet.isRegularVillager() ? "Villager" : "Wandering Trader";
    }
    updateTradePacket.setDisplayName(displayName);
    updateTradePacket.setUnknownInt(0);
    updateTradePacket.setScreen2(true);
    updateTradePacket.setWilling(true);
    updateTradePacket.setPlayerUniqueEntityId(session.getPlayerEntity().getGeyserId());
    updateTradePacket.setTraderUniqueEntityId(session.getPlayerEntity().getGeyserId());
    CompoundTagBuilder builder = CompoundTagBuilder.builder();
    List<CompoundTag> tags = new ArrayList<>();
    for (VillagerTrade trade : packet.getTrades()) {
        CompoundTagBuilder recipe = CompoundTagBuilder.builder();
        recipe.intTag("maxUses", trade.getMaxUses());
        recipe.intTag("traderExp", trade.getXp());
        recipe.floatTag("priceMultiplierA", trade.getPriceMultiplier());
        recipe.tag(getItemTag(session, trade.getOutput(), "sell", 0));
        recipe.floatTag("priceMultiplierB", 0.0f);
        recipe.intTag("buyCountB", trade.getSecondInput() != null ? trade.getSecondInput().getAmount() : 0);
        recipe.intTag("buyCountA", trade.getFirstInput().getAmount());
        recipe.intTag("demand", trade.getDemand());
        recipe.intTag("tier", packet.getVillagerLevel() - 1);
        recipe.tag(getItemTag(session, trade.getFirstInput(), "buyA", trade.getSpecialPrice()));
        if (trade.getSecondInput() != null) {
            recipe.tag(getItemTag(session, trade.getSecondInput(), "buyB", 0));
        }
        recipe.intTag("uses", trade.getNumUses());
        recipe.byteTag("rewardExp", (byte) 1);
        tags.add(recipe.buildRootTag());
    }

    //Hidden trade to fix visual experience bug
    if (packet.isRegularVillager() && packet.getVillagerLevel() < 5) {
        tags.add(CompoundTagBuilder.builder()
                .intTag("maxUses", 0)
                .intTag("traderExp", 0)
                .floatTag("priceMultiplierA", 0.0f)
                .floatTag("priceMultiplierB", 0.0f)
                .intTag("buyCountB", 0)
                .intTag("buyCountA", 0)
                .intTag("demand", 0)
                .intTag("tier", 5)
                .intTag("uses", 0)
                .byteTag("rewardExp", (byte) 0)
                .buildRootTag());
    }

    builder.listTag("Recipes", CompoundTag.class, tags);
    List<CompoundTag> expTags = new ArrayList<>();
    expTags.add(CompoundTagBuilder.builder().intTag("0", 0).buildRootTag());
    expTags.add(CompoundTagBuilder.builder().intTag("1", 10).buildRootTag());
    expTags.add(CompoundTagBuilder.builder().intTag("2", 70).buildRootTag());
    expTags.add(CompoundTagBuilder.builder().intTag("3", 150).buildRootTag());
    expTags.add(CompoundTagBuilder.builder().intTag("4", 250).buildRootTag());
    builder.listTag("TierExpRequirements", CompoundTag.class, expTags);
    updateTradePacket.setOffers(builder.buildRootTag());
    session.sendUpstreamPacket(updateTradePacket);
}