supertux/data/images/objects/weak_block/meltbox.sprite

(supertux-sprite
  (action
    (name "normal")
    (images 
      "meltbox.png"
    )
  )
  (action
    (name "burning")
    (images 
      "melt_01.png"
			"melt_02.png"
			"melt_03.png"
			"melt_04.png"
			"melt_05.png"
    )
  )
  (action
    (name "disintegrating")
    (images 
      "melt_06.png"
      "melt_07.png"
      "melt_08.png"
      "melt_09.png"
      "melt_10.png"
      "melt_11.png"
    )
  )
)