supertux/data/images/creatures/spiky/spiky.sprite

(supertux-sprite
 (action
  (name "left")
  (hitbox 6 10 31.8 31.8)
  (images "left-0.png"
          "left-1.png"
          "left-2.png"
          "left-1.png"))
 (action
  (name "right")
  (hitbox 6 10 31.8 31.8)
  (mirror-action "left"))
 (action
  (name "iced-left")
  (hitbox 6 10 31.8 31.8)
  (images "iced-left.png"))
 (action
  (name "iced-right")
  (hitbox 6 10 31.8 31.8)
  (mirror-action "iced-left")
  )
 )