def play(self):
"""
Plays the game, alternating turns between the players.
Moves are requested sequentially from each player in turn until there is
a winner. The moves are checked for validity.
Returns:
int: the side of the winning player, or None if there was a draw
"""
if self.shuffle:
random.shuffle(self.players())
player_cycle = cycle(self.players())
# Request moves from each player until there is a win or draw
for player in player_cycle:
# Uncomment to log board state each turn
# if self.logger:
# self.logger.debug(rules.board_str(self.board))
# Check for a win or draw
winning_side = rules.winner(self.board)
if winning_side is not None:
winner = self.player(winning_side)
if self.logger:
self.logger.info("{2}\nGame over: {0} win ({1})".format(
rules.side_name(winning_side),
type(winner).__name__, rules.board_str(self.board)))
# Return the side of the winning player
return winning_side
elif rules.board_full(self.board):
# The board is full so the game concluded with a draw
if self.logger:
self.logger.info("{0}\nGame over: Draw".format(
rules.board_str(self.board)))
# Return None for a draw
return None
# Request a move from the player
move = player.move(self.board.copy())
# Apply the move if it is valid
if rules.valid_move(self.board, move):
self.board[move] = player.side
else:
if self.logger:
self.logger.fatal("Invalid move")
raise ValueError("Not a valid move: {0}".format(move))
def move(self, board):
print "\n{}".format(rules.board_str(board))
while True:
try:
move = tuple(map(int, raw_input("Cell (row, col): ").split(",")))
except ValueError:
continue
if rules.valid_move(board, move):
return move
def play(self):
"""
Plays the game, alternating turns between the players.
Moves are requested sequentially from each player in turn until there is
a winner. The moves are checked for validity.
Returns:
int: the side of the winning player, or None if there was a draw
"""
if self.shuffle:
random.shuffle(self.players())
player_loop = cycle(self.players())
for player in player_loop:
# if self.logger:
# self.logger.debug(rules.board_str(self.board))
# Get the coordinates of the player's move
move = player.move(self.board)
# Make the move if it is valid
if rules.valid_move(self.board, move):
self.board[move] = player.side
else:
if self.logger:
self.logger.fatal("Invalid move")
raise ValueError("Not a valid move: {0}".format(move))
# Check for a win or draw
if rules.winning_move(self.board, move):
if self.logger:
self.logger.info("{2}\nGame over: {0} win ({1})".format(
rules.side_name(player.side), type(player).__name__,
rules.board_str(self.board)))
# Return winning player
return player.side
elif rules.draw(self.board):
if self.logger:
self.logger.info("{0}\nGame over: Draw".format(
rules.board_str(self.board)))
# Return None for draw
return None
def move(self, board):
# Print the current game board
print "\n{}".format(rules.board_str(board))
# Request a move from the player, repeating if the input is not valid
while True:
try:
num = int(raw_input("Cell (1-9): "))
if num not in range(1, 10):
continue
# Convert number 1-9 to x,y cell coordinates
cell = (int((9 - num) / 3), (num - 1) % 3)
except ValueError:
continue
if rules.valid_move(board, cell):
return cell
def __str__(self):
"""Returns a string representation of the board state represented by
this node."""
return rules.board_str(self.state)
