Crafty ObjectPool

objectpool.js

var ObjectPool = {
    /**
     * Get a cached entity or create a new one
     * @param  string component Component string (e.g. "player")
     * @return entity
     */
    get: function(component) {
        var objects = Crafty(component);
        for(var i = 0; i < objects.length; i++) {
            var e = Crafty(objects[i]);
            if (!e.visible) {
                e.visible = true;
                e.active = true;
                if (typeof(e.revive) == 'function') {
                    e.revive();
                }
                return e;
            }
        }

        if (DEBUG) console.log("Creating new " + component);
        var e = Crafty.e(component);
        e.setName(component);
        e.visible = true;
        e.active = true;
        return e;
    },

    /**
     * Recycle
     * @param  entity o Entity
     */
    recycle: function(e) {
        e.visible = false;
        e.active = false;
    }
}