Function play_game

rl/tic_tac_toe.py:374–405

(p1, p2, env, draw=False)

def play_game(p1, p2, env, draw=False):
  # loops until the game is over
  current_player = None
  while not env.game_over():
    # alternate between players
    # p1 always starts first
    if current_player == p1:
      current_player = p2
    else:
      current_player = p1

    # draw the board before the user who wants to see it makes a move
    if draw:
      if draw == 1 and current_player == p1:
        env.draw_board()
      if draw == 2 and current_player == p2:
        env.draw_board()

    # current player makes a move
    current_player.take_action(env)

    # update state histories
    state = env.get_state()
    p1.update_state_history(state)
    p2.update_state_history(state)

  if draw:
    env.draw_board()

  # do the value function update
  p1.update(env)
  p2.update(env)


if __name__ == '__main__':