supertux/data/images/creatures/ghosttree/root-base.sprite

(supertux-sprite
  (action
    (name "appearing")
    (fps 16)
    (images 
      "root-base-0.png"
      "root-base-1.png"
      "root-base-2.png"
      "root-base-3.png"
    )
  )
  (action
    (name "vanishing")
    (fps 16)
    (images 
      "root-base-3.png"
      "root-base-2.png"
      "root-base-1.png"
      "root-base-0.png"
    )
  )
)