Phaser.GameObjectFactory = function (game){ 
this.game = game; 
this.world = this.game.world; 
} 
; 
Phaser.GameObjectFactory.prototype = { 
game: null ,
world: null ,
sprite: function (x, y, key, frame){ 
if (typeof key === "undefined") { 
key = ''; 
} 
if (typeof frame === "undefined") { 
frame = null ; 
} 
return this.world.add(new Phaser.Sprite(this.game, x, y, key, frame)); 
} 
,
tween: function (obj, localReference){ 
if (typeof localReference === "undefined") { 
localReference = false ; 
} 
return this.game.tweens.create(obj, localReference); 
} 
}
;