old_contents: EMPTY = '.'
  WALL = '#'
  ROOM = '@'
  CHOPP = 'U'
  LAPTOP = 'L'
  PLAYER_X = 'x'
  PLAYER_Y = 'y'
  
  UP = 'up'
  DOWN = 'down'
  LEFT = 'left'
  RIGHT = 'right'
  DANCE = 'dance'
  
  ACTIONS = UP, DOWN, LEFT, RIGHT, DANCE
  
  PLAYERS = PLAYER_X, PLAYER_Y
  
  SCORE_THINGS = {
      CHOPP: 1,
      LAPTOP: 5,
  }
  
  ACTION_DELTAS = {
      UP: (-1, 0),
      DOWN: (1, 0),
      LEFT: (0, -1),
      RIGHT: (0, 1),
      DANCE: (0, 0),
  }
  
  WON = 'won'
  LOST  = 'lost'
  TIE = 'tie'
  
  RESULTS = WON, LOST, TIE
  
new_contents: CLEAR = '\033[0m'
  BOLD = '\033[1m'
  REVERSE = '\033[7m'
  
  RED = '\033[31m'
  BLUE = '\033[34m'
  YELLOW = '\033[93m'
  GREEN = '\033[32m'
  MAGENTA = '\033[35m'
  
  
  EMPTY = ' '
  WALL = '{0}#{1}'.format(MAGENTA, CLEAR)
  CHOPP = '{0}{1}U{2}'.format(BOLD, YELLOW, CLEAR)
  LAPTOP = '{0}{1}L{2}'.format(BOLD, BLUE, CLEAR)
  PLAYER_X = '{0}{1}x{2}'.format(BOLD, RED, CLEAR)
  PLAYER_Y = '{0}{1}y{2}'.format(BOLD, GREEN, CLEAR)
  ROOM = '{0}@{1}'.format(MAGENTA, CLEAR)
  
  UP = 'up'
  DOWN = 'down'
  LEFT = 'left'
  RIGHT = 'right'
  DANCE = 'dance'
  
  ACTIONS = UP, DOWN, LEFT, RIGHT, DANCE
  
  PLAYERS = PLAYER_X, PLAYER_Y
  
  SCORE_THINGS = {
      CHOPP: 1,
      LAPTOP: 5,
  }
  
  ACTION_DELTAS = {
      UP: (-1, 0),
      DOWN: (1, 0),
      LEFT: (0, -1),
      RIGHT: (0, 1),
      DANCE: (0, 0),
  }
  
  WON = 'won'
  LOST  = 'lost'
  TIE = 'tie'
  
  RESULTS = WON, LOST, TIE
  
subject: Fix AStar