Hi, I'm having a problem adding animation to extended Sprite in 2.0   This doesn't work:  Player = function (game,x,y){ Phaser.Sprite.call(this,game,x,y,'GameAtlas','Player_Idle-0001.png'); game.physics.enable(this, Phaser.Physics.ARCADE); this.animations.add('Idle',Phaser.Animation.generateFrameNames('Player_Idle-', 1, 18, '.png', 4),6,true);};Player.prototype = Object.create(Phaser.Sprite.prototype);Player.prototype.constructor = Player;player = new Player(game,game.world.centerX,game.world