(supertux-sprite
  (action
    (name "walking-left")
    (images "walking1.png" "walking2.png" "walking3.png" "walking4.png")
    )
  (action
    (name "walking-right")
    (mirror-action "walking-left")
    )
  (action
    (name "stacked-left")
    (images "stacked.png")
    )
  (action
    (name "stacked-right")
    (mirror-action "stacked-left")
    )
  (action
    (name "squished-left")
    (images "squished.png")
    )
  (action
    (name "squished-right")
    (mirror-action "squished-left")
    )

  )