class AnimatedItem
  constructor: (options) ->
    {@maxFrames, @image, @speed} = options

    @frame = 0
    window.setInterval @changeAnimation, @speed

  sprite: ->
    [@frame*8, 0, 8, 8]

  changeAnimation: =>
    if @frame == @maxFrames
      @frame = 0
    else
      @frame += 1