old_contents: NOTHING = [0,0]
  UP = [-1,0]
  RIGHT = [0,1]
  DOWN = [1,0]
  LEFT = [0,-1]
  
  GRASS = 0
  LAVA = 1
  BERRY = 2
  KAT = 3
  WALL  = 4
new_contents: UP = 0
  RIGHT = 1
  DOWN = 2
  LEFT = 3
  
  GRASS = 0
  LAVA = 1
  BERRY = 2
  KAT = 3
  WALL  = 4
subject: update back to non-stupid directions