minecraft.js/lib/tileEntity.js

Minecraft data serialization/deserialization and networking

var Entity = require(__dirname + '/entity.js'),
    Vector3 = require(__dirname + '/vector3.js'),
    Tag = require(__dirname + '/tag.js');

/** @constructor */
var TileEntity = module.exports = function(args) {
	if(typeof args != 'object') args = {};
	Entity.call(this, args);
	
	this.id = args.id || "";
	this.pos = args.pos || new Vector3(0.0, 0.0, 0.0);
	
	switch(this.id) {
		case 'Furnace':
			this.burnTime = args.burnTime || 0;
			this.cookTime = args.cookTime || 0;
			this.items = args.items || [];
			//TODO: verify items are instances of Item
			break;
		case 'Sign':
			this.text = args.text || ["","","","",""];
			break;
		case 'MobSpawner':
			this.entityId = args.entityId || "";
			this.delay = args.delay || 100;
			break;
		case 'Chest':
			this.items = args.items || [];
			//TODO: verify items are instances of Item
			break;
		case 'Music':
			this.note = args.note || 0;
			break;
		case 'Trap':
			this.items = args.items || [];
			//TODO: verify items are instances of Item
			break;
		case 'RecordPlayer':
			this.record = args.record || 0;
			break;
		case 'Piston':
			this.blockId = args.blockId || 0;
			this.blockData = args.blockData || 0;
			this.facing = args.facing || 0;
			this.progress = args.progress || 0.0;
			this.extending = args.extending || 0;
			break;
		case 'Cauldron':
			this.items = args.items || [];
			//TODO: verify items are instances of Item
			this.brewTime = args.brewTime || 0;
			break;
	}
};

TileEntity.prototype.toTag = function() {
	var tag = new Tag('compound', []);
	
	tag.append(new Tag('string', 'id', this.id))
		.append(new Tag('int', 'x', this.pos.x))
		.append(new Tag('int', 'y', this.pos.y))
		.append(new Tag('int', 'z', this.pos.z));
	
	switch(this.id) {
		case 'Furnace':
			tag.append(new Tag('short', 'BurnTime', this.burnTime))
				.append(new Tag('short', 'CookTime', this.cookTime));
			var itemsTag = new Tag('list', 'Items', []);
			for(var i = 0; i < this.items.length; i++)
				itemsTag.append(this.items[i].toTag());
			tags.append(itemsTag);
			break;
		case 'Sign':
			tag.append(new Tag('string', 'Text1', this.text[0]))
    			.append(new Tag('string', 'Text2', this.text[1]))
    			.append(new Tag('string', 'Text3', this.text[2]))
    			.append(new Tag('string', 'Text4', this.text[3]))
    			.append(new Tag('string', 'Text5', this.text[4]));
			break;
		case 'MobSpawner':
			tag.append(new Tag('string', 'EntityId', this.entityId))
				.append(new Tag('short', 'Delay', this.delay));
			break;
		case 'Chest':
			var itemsTag = new Tag('list', 'Items', []);
			for(var i = 0; i < this.items.length; i++)
				itemsTag.append(this.items[i].toTag());
			tags.append(itemsTag);
			break;
		case 'Music':
			tag.append(new Tag('byte', 'note', this.note));
			break;
		case 'Trap':
			var itemsTag = new Tag('list', 'Items', []);
			for(var i = 0; i < this.items.length; i++)
				itemsTag.append(this.items[i].toTag());
			tags.append(itemsTag);
			break;
		case 'RecordPlayer':
			tag.append(new Tag('int', 'Record', this.record));
			break;
		case 'Piston':
			tag.append(new Tag('int', 'blockId', this.blockId))
    			.append(new Tag('int', 'blockData', this.blockData))
    			.append(new Tag('int', 'facing', this.facing))
    			.append(new Tag('float', 'progress', this.progress))
    			.append(new Tag('byte', 'extending', this.extending));
			break;
		case 'Cauldron':
			var itemsTag = new Tag('list', 'Items', []);
			for(var i = 0; i < this.items.length; i++)
				itemsTag.append(this.items[i].toTag());
			tags.append(itemsTag)
				.append(new Tag('int', 'BrewTime', this.brewTime));
			break;
	}
	
	return tag;
};

TileEntity.prototype.tpyes = ['Furnace', 'Sign', 'MobSpawner',
	'Chest', 'Music', 'Trap', 'RecordPlayer', 'Piston', 'Cauldron', 'EnchantTable', 
	'Airportal'];