supertux/data/images/worldmap/forest/leveldots/door.sprite

(supertux-sprite
  (action
    (name "default")
    (hitbox 48 112 96 64)
    (images "doorclosed.png"
)
  )
  (action
    (name "solved")
    (hitbox 48 112 96 64)
    (images "dooropen.png"
)
  )
)