supertux/data/images/objects/pushbutton/pushbutton.sprite

(supertux-sprite
  (action
    (name "off-up")
    (hitbox 0 0 30 16)
    (images "pushbutton-0.png")
  )
  (action
    (name "on-up")
    (hitbox 0 0 30 10)
    (loops 1)
    (fps 20)
    (images "pushbutton-1.png"
            "pushbutton-2.png"
            "pushbutton-3.png"
    )
  )
  (action
    (name "off-down")
    (hitbox 0 0 30 16)
    (flip-action "off-up")
  )
  (action
    (name "on-down")
    (hitbox 0 0 30 10)
    (flip-action "on-up")
  )
)