net.minecraft.nbt.ListTag Java Examples

public static List<ItemStack> getItemsInContainer(ItemStack item) {
	List<ItemStack> items = new ArrayList<>(Collections.nCopies(27, new ItemStack(Items.AIR)));
	CompoundTag nbt = item.getTag();
	
	if (nbt != null && nbt.contains("BlockEntityTag")) {
		CompoundTag nbt2 = nbt.getCompound("BlockEntityTag");
		if (nbt2.contains("Items")) {
			ListTag nbt3 = (ListTag) nbt2.get("Items");
			for (int i = 0; i < nbt3.size(); i++) {
				items.set(nbt3.getCompound(i).getByte("Slot"), ItemStack.fromTag(nbt3.getCompound(i)));
			}
		}
	}
	
	return items;
}
 

public static List<ItemStack> getItemsInContainer(ItemStack item) {
	List<ItemStack> items = new ArrayList<>(Collections.nCopies(27, new ItemStack(Items.AIR)));
	CompoundTag nbt = item.getTag();
	
	if (nbt != null && nbt.containsKey("BlockEntityTag")) {
		CompoundTag nbt2 = nbt.getCompound("BlockEntityTag");
		if (nbt2.containsKey("Items")) {
			ListTag nbt3 = (ListTag) nbt2.getTag("Items");
			for (int i = 0; i < nbt3.size(); i++) {
				items.set(nbt3.getCompoundTag(i).getByte("Slot"), ItemStack.fromTag(nbt3.getCompoundTag(i)));
			}
		}
	}
	
	return items;
}
 

private ListTag convertEffectsToNbt(ItemStack stack)
{
	ListTag nbt = new ListTag();
	List<StatusEffectInstance> effects =
		PotionUtil.getCustomPotionEffects(stack);
	
	for(StatusEffectInstance effect : effects)
	{
		CompoundTag tag = new CompoundTag();
		
		int id = StatusEffect.getRawId(effect.getEffectType());
		tag.putInt("Id", id);
		tag.putInt("Amplifier", effect.getAmplifier());
		tag.putInt("Duration", effect.getDuration());
		
		nbt.add(tag);
	}
	
	return nbt;
}
 

public static List<ItemStack> getItemsInContainer(ItemStack item) {
	List<ItemStack> items = new ArrayList<>(Collections.nCopies(27, new ItemStack(Items.AIR)));
	CompoundTag nbt = item.getTag();
	
	if (nbt != null && nbt.contains("BlockEntityTag")) {
		CompoundTag nbt2 = nbt.getCompound("BlockEntityTag");
		if (nbt2.contains("Items")) {
			ListTag nbt3 = (ListTag) nbt2.get("Items");
			for (int i = 0; i < nbt3.size(); i++) {
				items.set(nbt3.getCompound(i).getByte("Slot"), ItemStack.fromTag(nbt3.getCompound(i)));
			}
		}
	}
	
	return items;
}
 

@Override
public Tag toTag(Value pointsValue)
{
    List<Value> lv = ((ListValue)pointsValue).getItems();
    ListTag ltag = new ListTag();
    for (Value value : lv)
    {
        List<Value> coords = ((ListValue)value).getItems();
        ListTag tag = new ListTag();
        tag.add(DoubleTag.of(NumericValue.asNumber(lv.get(0), "x").getDouble()));
        tag.add(DoubleTag.of(NumericValue.asNumber(lv.get(1), "y").getDouble()));
        tag.add(DoubleTag.of(NumericValue.asNumber(lv.get(2), "z").getDouble()));
        ltag.add(tag);
    }
    return ltag;
}
 

@Override
public String getCreatorModId(ItemStack itemStack) {
	final Item item = itemStack.getItem();
	final Identifier defaultId = Registry.ITEM.getDefaultId();
	final Identifier id = Registry.ITEM.getId(item);

	if (defaultId.equals(id) && item != Registry.ITEM.get(defaultId)) {
		return null;
	} else {
		final String namespace = id.getNamespace();

		if ("minecraft".equals(namespace)) {
			final ListTag enchantments = EnchantedBookItem.getEnchantmentTag(itemStack);

			if (enchantments.size() == 1) {
				final Identifier enchantmentId = Identifier.tryParse(enchantments.getCompound(0).getString("id"));

				if (Registry.ENCHANTMENT.getOrEmpty(enchantmentId).isPresent()) {
					return enchantmentId.getNamespace();
				}
			}
		}

		return namespace;
	}
}
 

@Override
public Tag toTag(Value value)
{
    List<Value> lv = ((ListValue)value).getItems();
    ListTag tag = new ListTag();
    tag.add(DoubleTag.of(NumericValue.asNumber(lv.get(0), "x").getDouble()));
    tag.add(DoubleTag.of(NumericValue.asNumber(lv.get(1), "y").getDouble()));
    tag.add(DoubleTag.of(NumericValue.asNumber(lv.get(2), "z").getDouble()));
    return tag;
}
 

public static List<List<String>> getTextInBook(ItemStack item) {
	List<String> pages = new ArrayList<>();
	CompoundTag nbt = item.getTag();
	
	if (nbt != null && nbt.contains("pages")) {
		ListTag nbt2 = nbt.getList("pages", 8);
		for (int i = 0; i < nbt2.size(); i++) pages.add(nbt2.getString(i));
	}
	
	List<List<String>> finalPages = new ArrayList<>();
	
	for (String s: pages) {
		String buffer = "";
		List<String> pageBuffer = new ArrayList<>();
		
		for (char c: s.toCharArray()) {
			if (MinecraftClient.getInstance().textRenderer.getWidth(buffer) > 114 || buffer.endsWith("\n")) {
				pageBuffer.add(buffer.replace("\n", ""));
				buffer = "";
			}
			
			buffer += c;
		}
		pageBuffer.add(buffer);
		finalPages.add(pageBuffer);
	}
	
	return finalPages;
}
 

public void enchant(ItemStack item, Enchantment e, int level) {
	if (item.getTag() == null) item.setTag(new CompoundTag());
	if (!item.getTag().contains("Enchantments", 9)) {
		item.getTag().put("Enchantments", new ListTag());
    }

    ListTag listnbt = item.getTag().getList("Enchantments", 10);
    CompoundTag compoundnbt = new CompoundTag();
    compoundnbt.putString("id", String.valueOf(Registry.ENCHANTMENT.getId(e)));
    compoundnbt.putInt("lvl", level);
    listnbt.add(compoundnbt);
}
 

public static List<List<String>> getTextInBook(ItemStack item) {
	List<String> pages = new ArrayList<>();
	CompoundTag nbt = item.getTag();
	
	if (nbt != null && nbt.contains("pages")) {
		ListTag nbt2 = nbt.getList("pages", 8);
		for (int i = 0; i < nbt2.size(); i++) pages.add(nbt2.getString(i));
	}
	
	List<List<String>> finalPages = new ArrayList<>();
	
	for (String s: pages) {
		String buffer = "";
		List<String> pageBuffer = new ArrayList<>();
		
		for (char c: s.toCharArray()) {
			if (MinecraftClient.getInstance().textRenderer.getStringWidth(buffer) > 114 || buffer.endsWith("\n")) {
				pageBuffer.add(buffer.replace("\n", ""));
				buffer = "";
			}
			
			buffer += c;
		}
		pageBuffer.add(buffer);
		finalPages.add(pageBuffer);
	}
	
	return finalPages;
}
 

public void enchant(ItemStack item, Enchantment e, int level) {
	if (item.getTag() == null) item.setTag(new CompoundTag());
	if (!item.getTag().contains("Enchantments", 9)) {
		item.getTag().put("Enchantments", new ListTag());
    }

    ListTag listnbt = item.getTag().getList("Enchantments", 10);
    CompoundTag compoundnbt = new CompoundTag();
    compoundnbt.putString("id", String.valueOf(Registry.ENCHANTMENT.getId(e)));
    compoundnbt.putInt("lvl", level);
    listnbt.add(compoundnbt);
}
 

public Value decode(Tag tag)
{
    ListTag ctag = (ListTag)tag;
    return ListValue.of(
            new NumericValue(ctag.getDouble(0)),
            new NumericValue(ctag.getDouble(1)),
            new NumericValue(ctag.getDouble(2))
    );
}
 

public static List<List<String>> getTextInBook(ItemStack item) {
	List<String> pages = new ArrayList<>();
	CompoundTag nbt = item.getTag();
	
	if (nbt != null && nbt.containsKey("pages")) {
		ListTag nbt2 = nbt.getList("pages", 8);
		for (int i = 0; i < nbt2.size(); i++) pages.add(nbt2.getString(i));
	}
	
	List<List<String>> finalPages = new ArrayList<>();
	
	for (String s: pages) {
		String buffer = "";
		List<String> pageBuffer = new ArrayList<>();
		
		for (char c: s.toCharArray()) {
			if (MinecraftClient.getInstance().textRenderer.getStringWidth(buffer) > 114 || buffer.endsWith("\n")) {
				pageBuffer.add(buffer.replace("\n", ""));
				buffer = "";
			}
			
			buffer += c;
		}
		pageBuffer.add(buffer);
		finalPages.add(pageBuffer);
	}
	
	return finalPages;
}
 

public Value decode(Tag tag)
{
    ListTag ltag = (ListTag)tag;
    List<Value> points = new ArrayList<>();
    for (int i=0, ll = ltag.size(); i<ll; i++)
    {
        ListTag ptag = ltag.getList(i);
        points.add(ListValue.of(
                new NumericValue(ptag.getDouble(0)),
                new NumericValue(ptag.getDouble(1)),
                new NumericValue(ptag.getDouble(2))
        ));
    }
    return ListValue.wrap(points);
}
 

public void addShapes(ListTag tag)
{
    for (int i=0, count = tag.size(); i < count; i++)
    {
        addShape(tag.getCompound(i));
    }
}
 

private static TagTypeCompat getType(Tag tag)
{
    if (tag instanceof IntTag) return INT;
    if (tag instanceof LongTag) return LONG;
    if (tag instanceof DoubleTag) return DBL;
    if (tag instanceof ListTag) return LIST;
    if (tag instanceof CompoundTag) return MAP;
    return STRING;
}
 

@Override
public Tag toTag(boolean force)
{
    int argSize = items.size();
    if (argSize == 0) return new ListTag();
    ListTag tag = new ListTag();
    if (argSize ==1)
    {
        tag.add(items.get(0).toTag(force));
        return tag;
    }
    // figuring out the types
    List<Tag> tags= new ArrayList<>();
    items.forEach(v -> tags.add(v.toTag(force)));
    Set<TagTypeCompat> cases = EnumSet.noneOf(TagTypeCompat.class);
    tags.forEach(t -> cases.add(TagTypeCompat.getType(t)));
    if (cases.size()==1) // well, one type of items
    {
        tag.addAll(tags);
        return tag;
    }
    if (cases.contains(TagTypeCompat.LIST)
            || cases.contains(TagTypeCompat.MAP)
            || cases.contains(TagTypeCompat.STRING)) // incompatible types
    {
        if (!force) throw new NBTSerializableValue.IncompatibleTypeException(this);
        tags.forEach(t -> tag.add(StringTag.of(t.asString())));
        return tag;
    }
    // only numbers / mixed types
    if (cases.contains(TagTypeCompat.DBL))
    {
        tags.forEach(t -> tag.add(DoubleTag.of(((AbstractNumberTag)t).getDouble())));
    }
    else
    {
        tags.forEach(t -> tag.add(LongTag.of(((AbstractNumberTag)t).getLong())));
    }
    return tag;
}
 

private boolean modify_insert(int index, NbtPathArgumentType.NbtPath nbtPath, Tag newElement, Tag currentTag)
{
    Collection<Tag> targets;
    try
    {
        targets = nbtPath.getOrInit(currentTag, ListTag::new);
    }
    catch (CommandSyntaxException e)
    {
        return false;
    }

    boolean modified = false;
    for (Tag target : targets)
    {
        if (!(target instanceof AbstractListTag))
        {
            continue;
        }
        try
        {
            AbstractListTag<?> targetList = (AbstractListTag) target;
            if (!targetList.addTag(index < 0 ? targetList.size() + index + 1 : index, newElement.copy()))
                return false;
            modified = true;
        }
        catch (IndexOutOfBoundsException ignored)
        {
        }
    }
    return modified;
}
 

public static void onClientCommand(Tag t)
{
    CarpetSettings.LOG.info("Server Response:");
    CompoundTag tag = (CompoundTag)t;
    CarpetSettings.LOG.info(" - id: "+tag.getString("id"));
    CarpetSettings.LOG.info(" - code: "+tag.getInt("code"));
    if (tag.contains("error")) CarpetSettings.LOG.warn(" - error: "+tag.getString("error"));
    if (tag.contains("output"))
    {
        ListTag outputTag = (ListTag) tag.get("output");
        for (int i = 0; i < outputTag.size(); i++)
            CarpetSettings.LOG.info(" - response: " + Text.Serializer.fromJson(outputTag.getString(i)).getString());
    }
}
 

public void enchant(ItemStack item, Enchantment e, int level) {
	if (item.getTag() == null) item.setTag(new CompoundTag());
	if (!item.getTag().containsKey("Enchantments", 9)) {
		item.getTag().put("Enchantments", new ListTag());
    }

    ListTag listnbt = item.getTag().getList("Enchantments", 10);
    CompoundTag compoundnbt = new CompoundTag();
    compoundnbt.putString("id", String.valueOf(Registry.ENCHANTMENT.getId(e)));
    compoundnbt.putInt("lvl", level);
    listnbt.add(compoundnbt);
}
 

@Override
public void fromTag(CompoundTag tag) {
	ListTag list = tag.getList("entities", 10);
	for (int i = 0; i < list.size(); i++) {
		CompoundTag item = list.getCompound(i);
		lastGivenCandy.put(item.getUuid("uuid"), item.getLong("time"));
	}
}
 

public <T> List<T> sbx$getList(String key, Class<T> tagType) {
    int id = 0;
    if (tagType == org.sandboxpowered.sandbox.api.util.nbt.CompoundTag.class) {
        id = 10;
    }
    //TODO
    ListTag tag = getList(key, id);
    return (List<T>) tag;
}
 

@Inject(
        method = "fromTag",
        at = @At(value = "INVOKE", shift = At.Shift.AFTER,
                target = "Lnet/minecraft/entity/Entity;readCustomDataFromTag(Lnet/minecraft/nbt/CompoundTag;)V")
)
private void onFromTag(CompoundTag compoundTag_1, CallbackInfo ci)
{
    if (this.shouldSetPositionOnLoad())
    {
        this.refreshPosition();
    }
    
    if (CarpetExtraSettings.reloadSuffocationFix && compoundTag_1.contains("CM_Box", 9))
    {
        ListTag box_tag = compoundTag_1.getList("CM_Box", 6);
        
        Box box = new Box(box_tag.getDouble(0), box_tag.getDouble(1),
                box_tag.getDouble(2), box_tag.getDouble(3),
                box_tag.getDouble(4), box_tag.getDouble(5));

        double deltaX = ((box.x1 + box.x2) / 2.0D) - this.x;
        double deltaY = box.y1 - this.y;
        double deltaZ = ((box.z1 + box.z2) / 2.0D) - this.z;
        
        // Credits: MrGrim (MUP) -> Sanity check.
        // If the position and BoundingBox center point are > 0.1 blocks apart then do not restore the BoundingBox. In vanilla
        // this should never happen, but mods might not be aware that the BoundingBox is stored and that the entity
        // position will be reset to it.
        if (((deltaX * deltaX) + (deltaY * deltaY) + (deltaZ * deltaZ)) < 0.01D)
        {
            this.setBoundingBox(box);
        }
    }
}
 

private static ItemStack invertBannerColors(ItemStack stack) {
    stack = stack.copy();
    CompoundTag blockEntityTag = stack.getSubTag("BlockEntityTag");
    if (blockEntityTag != null && blockEntityTag.contains("Patterns", 9)) {
        ListTag patterns = blockEntityTag.getList("Patterns", 10);
        for (Tag t : patterns) {
            CompoundTag pattern = (CompoundTag) t;
            if (pattern.contains("Color", 3))
                pattern.putInt("Color", 15 - pattern.getInt("Color"));
        }
    }
    return stack;
}
 

private static void newEnchantmentListToOld(ListTag enchantments) {
    for (int i = 0; i < enchantments.size(); i++) {
        CompoundTag ench = enchantments.getCompound(i);
        Identifier name = Identifier.tryParse(ench.getString("id"));
        Enchantment enchObj = Registry.ENCHANTMENT.get(name);
        if (enchObj == null) {
            enchantments.remove(i);
            i--;
        } else {
            ench.putInt("id", Registry.ENCHANTMENT.getRawId(enchObj));
        }
    }
}
 

private static void oldEnchantmentListToNew(ListTag enchantments) {
    for (int i = 0; i < enchantments.size(); i++) {
        CompoundTag ench = enchantments.getCompound(i);
        int id = ench.getInt("id");
        Identifier name = Registry.ENCHANTMENT.getId(Registry.ENCHANTMENT.get(id));
        if (name == null) {
            enchantments.remove(i);
            i--;
        } else {
            ench.putString("id", name.toString());
        }
    }
}
 

private void remove(ItemStack stack, String[] args) throws CmdSyntaxError
{
	if(args.length != 2)
		throw new CmdSyntaxError();
	
	int id = parseEffectId(args[1]);
	
	List<StatusEffectInstance> oldEffects =
		PotionUtil.getCustomPotionEffects(stack);
	
	ListTag newEffects = new ListTag();
	for(StatusEffectInstance oldEffect : oldEffects)
	{
		int oldId = StatusEffect.getRawId(oldEffect.getEffectType());
		
		if(oldId == id)
			continue;
		
		CompoundTag effect = new CompoundTag();
		effect.putInt("Id", oldId);
		effect.putInt("Amplifier", oldEffect.getAmplifier());
		effect.putInt("Duration", oldEffect.getDuration());
		newEffects.add(effect);
	}
	
	CompoundTag nbt = new CompoundTag();
	nbt.put("CustomPotionEffects", newEffects);
	stack.setTag(nbt);
	ChatUtils.message("Effect removed.");
}
 

@Override
public void onEnable()
{
	if(!MC.player.abilities.creativeMode)
	{
		ChatUtils.error("Creative mode only.");
		setEnabled(false);
		return;
	}
	
	if(!MC.player.inventory.getArmorStack(0).isEmpty())
	{
		ChatUtils.error("Please clear your shoes slot.");
		setEnabled(false);
		return;
	}
	
	// generate item
	ItemStack stack = new ItemStack(Blocks.CHEST);
	CompoundTag nbtCompound = new CompoundTag();
	ListTag nbtList = new ListTag();
	for(int i = 0; i < 40000; i++)
		nbtList.add(new ListTag());
	nbtCompound.put("www.wurstclient.net", nbtList);
	stack.setTag(nbtCompound);
	stack.setCustomName(new LiteralText("Copy Me"));
	
	// give item
	MC.player.inventory.armor.set(0, stack);
	ChatUtils.message("Item has been placed in your shoes slot.");
	setEnabled(false);
}
 

@Override
public void onEnable()
{
	// check gamemode
	if(!MC.player.abilities.creativeMode)
	{
		ChatUtils.error("Creative mode only.");
		setEnabled(false);
		return;
	}
	
	// generate potion
	ItemStack stack = new ItemStack(Items.SPLASH_POTION);
	CompoundTag effect = new CompoundTag();
	effect.putInt("Amplifier", 125);
	effect.putInt("Duration", 2000);
	effect.putInt("Id", 6);
	ListTag effects = new ListTag();
	effects.add(effect);
	CompoundTag nbt = new CompoundTag();
	nbt.put("CustomPotionEffects", effects);
	stack.setTag(nbt);
	String name = "\u00a7rSplash Potion of \u00a74\u00a7lINSTANT DEATH";
	stack.setCustomName(new LiteralText(name));
	
	// give potion
	if(placeStackInHotbar(stack))
		ChatUtils.message("Potion created.");
	else
		ChatUtils.error("Please clear a slot in your hotbar.");
	
	setEnabled(false);
}
 

@Override
public void onEnable()
{
	// check gamemode
	if(!MC.player.abilities.creativeMode)
	{
		ChatUtils.error("Creative mode only.");
		setEnabled(false);
		return;
	}
	
	// generate potion
	ItemStack stack = new ItemStack(Items.SPLASH_POTION);
	ListTag effects = new ListTag();
	for(int i = 1; i <= 23; i++)
	{
		CompoundTag effect = new CompoundTag();
		effect.putInt("Amplifier", Integer.MAX_VALUE);
		effect.putInt("Duration", Integer.MAX_VALUE);
		effect.putInt("Id", i);
		effects.add(effect);
	}
	CompoundTag nbt = new CompoundTag();
	nbt.put("CustomPotionEffects", effects);
	stack.setTag(nbt);
	String name = "\u00a7rSplash Potion of Trolling";
	stack.setCustomName(new LiteralText(name));
	
	// give potion
	if(placeStackInHotbar(stack))
		ChatUtils.message("Potion created.");
	else
		ChatUtils.error("Please clear a slot in your hotbar.");
	
	setEnabled(false);
}