def test_alternating_players():
board = Board()
assert board.field(0, 0, 0) == EMPTY
assert board.field(1, 1, 0) == EMPTY
board.move(0, 0)
assert board.field(0, 0, 0) == RED
assert board.field(1, 1, 0) == EMPTY
board.move(1, 1)
assert board.field(0, 0, 0) == RED
assert board.field(1, 1, 0) == BLUE
assert board.round == 2
def play(self) -> int:
board = Board()
last_x = None
last_y = None
while board.round <= MAX_ROUND:
current_color = board.next_color
(x, y) = self.players[current_color].play(last_x, last_y)
if x == -1 and y == -1:
self.viewer.player_undoes()
board.undo()
(last_x, last_y) = (-1, -1)
else:
if 0 > x > 4 or 0 > y > 4:
raise RuleViolation("out of bounds move")
if board.field(x, y, 4) != EMPTY:
raise RuleViolation("already full at {},{}".format(x, y))
is_winning = board.move(x, y)
LOG.debug("player {} plays to {},{}".format(
current_color, x, y))
self.viewer.player_plays(x, y)
if is_winning:
LOG.debug("player {} wins!".format(current_color))
self.viewer.finish(board.winning_coords())
return current_color
(last_x, last_y) = (x, y)
LOG.debug("game ended in a draw")
self.viewer.finish([])
return EMPTY