0ad/binaries/data/mods/public/simulation/ai/common-api/entitycollection.js

function EntityCollection(baseAI, entities)
{
	this._ai = baseAI;
	this._entities = entities;

	var length = 0;
	for (var id in entities)
		++length;
	this.length = length;
}

EntityCollection.prototype.toIdArray = function()
{
	var ret = [];
	for (var id in this._entities)
		ret.push(+id);
	return ret;
};

EntityCollection.prototype.toEntityArray = function()
{
	var ret = [];
	for each (var ent in this._entities)
		ret.push(new Entity(this._ai, ent));
	return ret;
};

EntityCollection.prototype.toString = function()
{
	return "[EntityCollection " + this.toEntityArray().join(" ") + "]";
};

EntityCollection.prototype.filter = function(callback, thisp)
{
	var ret = {};
	for (var id in this._entities)
	{
		var ent = this._entities[id];
		var val = new Entity(this._ai, ent);
		if (callback.call(thisp, val, id, this))
			ret[id] = ent;
	}
	return new EntityCollection(this._ai, ret);
};

EntityCollection.prototype.forEach = function(callback, thisp)
{
	for (var id in this._entities)
	{
		var ent = this._entities[id];
		var val = new Entity(this._ai, ent);
		callback.call(thisp, val, id, this);
	}
	return this;
};

EntityCollection.prototype.move = function(x, z)
{
	Engine.PostCommand({"type": "walk", "entities": this.toIdArray(), "x": x, "z": z, "queued": false});
	return this;
};

EntityCollection.prototype.destroy = function()
{
	Engine.PostCommand({"type": "delete-entities", "entities": this.toIdArray()});
	return this;
};