function collect_treasure(treasure)
  player.score += treasure.points
  sfx(2)
  --del(treasures, treasure)
  destroy_treasure(treasure, false)
  return true
end

function destroy_treasure(treasure, explode)
  if (explode) spawn_explosion(treasure.x, treasure.y, 1)
  del(treasures, treasure)
  sfx(1)
end

function destroy_treasure_door_id(door_id)
  for treasure in all(treasures) do
    if (treasure.door == door_id) then
      del(treasures, treasure)
    end
  end
end