 
 Binds a step listener to update the transform of the object.
 
-Autoloads the sprite specified in I.spriteName, if any.
+Autoloads the sprite specified in I.sprite, if any.
 
     player = Core
       x: 15

    scaleY: 1
    zIndex: 0

  if I.sprite?.isString?()
    if I.sprite.indexOf("data:") is 0
      I.sprite = Sprite.fromURL(I.sprite)
    else
      I.sprite = Sprite.loadByName(I.sprite)

  self.bind 'draw.Drawable', (canvas) ->
    if I.alpha? and I.alpha != 1
      previousAlpha = canvas.context().globalAlpha
      canvas.context().globalAlpha = I.alpha

    if sprite = I.sprite
      if sprite.draw?
        sprite.draw(canvas, -sprite.width / 2, -sprite.height / 2)
      else


    return self

  sprite: (newSprite) ->
    if newSprite?
      cachedSprite = newSprite
    else
      if I.sprite
        Sprite.loadByName(I.sprite)

  ###*
  Returns the current transform, with translation, rotation, and flipping applied.

