def bot_wholeply(board, pieces, current_piece):
from players import available_squares, winning_moves
squares = available_squares(board)
# Play a winning move if one exists.
if current_piece:
for pos in winning_moves(board, current_piece):
return pos, None
# Try to find a combination of a move and piece that doesn't lose on the
# opponent's next turn.
for pos in squares:
test_board = make_move(board, current_piece, pos)
losing_pieces = set()
for next_piece in pieces:
if list(winning_moves(test_board, next_piece)):
losing_pieces.add(next_piece)
not_losing_pieces = list(set(pieces) - losing_pieces)
if not_losing_pieces:
return pos, random.choice(not_losing_pieces)
# Nothing intelligent left to do, give up and play randomly.
pos = None
if squares:
pos = random.choice(squares)
next_piece = None
if pieces:
next_piece = random.choice(pieces)
return pos, next_piece
def bot_wholeply(board, pieces, current_piece):
from players import available_squares, winning_moves
squares = available_squares(board)
# Play a winning move if one exists.
if current_piece:
for pos in winning_moves(board, current_piece):
return pos, None
# Try to find a combination of a move and piece that doesn't lose on the
# opponent's next turn.
for pos in squares:
test_board = make_move(board, current_piece, pos)
losing_pieces = set()
for next_piece in pieces:
if list(winning_moves(test_board, next_piece)):
losing_pieces.add(next_piece)
not_losing_pieces = list(set(pieces) - losing_pieces)
if not_losing_pieces:
return pos, random.choice(not_losing_pieces)
# Nothing intelligent left to do, give up and play randomly.
pos = None
if squares:
pos = random.choice(squares)
next_piece = None
if pieces:
next_piece = random.choice(pieces)
return pos, next_piece
def game(player_a, player_b):
"""
Play a game between two player functions.
"""
pieces = list(piece_descriptions.keys())
# Board mapping positions to pieces currently occupying that position.
board = {}
for x in range(SIZE):
for y in range(SIZE):
board[(x, y)] = None
current_piece = None
for score, current_player in itertools.cycle([(+1, player_a),
(-1, player_b)]):
# Remove the current piece from available pieces, and give it to the current player.
if current_piece:
pieces.remove(current_piece)
# Current player places the piece at `pos`, and chooses a piece for the opponent.
pos, next_piece = current_player(copy(board), copy(pieces),
current_piece)
#print('player moved at %s, and chose %s' % (pos, next_piece))
if pos:
assert board[
pos] is None # Don't allow playing on occupied positions.
board = make_move(board, current_piece, pos)
current_piece = next_piece
#print(board_string(board))
if is_win(board):
#print('%s wins!' % current_player.__name__)
return score
if not pieces:
# Game over, draw.
#print('draw')
return 0