def it_can_undo_last_move_or_push(self, forward_mover):
src = index_1d(4, 2, forward_mover.board.width)
dest = index_1d(3, 2, forward_mover.board.width)
forward_mover.move(Direction.LEFT)
forward_mover.undo()
assert forward_mover.state.pusher_position(DEFAULT_PIECE_ID) == src
assert forward_mover.board[src].has_pusher == True
assert forward_mover.board[dest].has_pusher == False
def it_moves_pusher_in_requested_direction(self, forward_mover):
src = index_1d(4, 2, forward_mover.board.width)
dest = index_1d(3, 2, forward_mover.board.width)
assert forward_mover.move(Direction.LEFT)
assert forward_mover.state.pusher_position(DEFAULT_PIECE_ID) == dest
assert not forward_mover.board[src].has_pusher
assert forward_mover.board[dest].has_pusher
def it_doesnt_memoize_failed_moves_and_pushes(self, forward_mover):
forward_mover.move(Direction.UP)
with pytest.raises(IllegalMoveError):
forward_mover.move(Direction.UP)
assert len(forward_mover.last_performed_moves) == 0
forward_mover.move(Direction.DOWN)
with pytest.raises(IllegalMoveError):
forward_mover.move(Direction.RIGHT)
assert len(forward_mover.last_performed_moves) == 0
def it_refuses_to_push_two_boxes(self, forward_mover):
assert forward_mover.move(Direction.UP)
assert forward_mover.move(Direction.RIGHT)
assert forward_mover.move(Direction.DOWN)
forward_mover.selected_pusher = DEFAULT_PIECE_ID + 1
assert forward_mover.move(Direction.LEFT)
assert forward_mover.move(Direction.LEFT)
assert forward_mover.move(Direction.LEFT)
with pytest.raises(IllegalMoveError):
forward_mover.move(Direction.LEFT)
def it_pushes_box_in_front_of_pusher(self, forward_mover):
assert forward_mover.move(Direction.DOWN)
assert forward_mover.move(Direction.RIGHT)
box_src = index_1d(5, 2, forward_mover.board.width)
box_dest = index_1d(5, 1, forward_mover.board.width)
pusher_src = index_1d(5, 3, forward_mover.board.width)
pusher_dest = box_src
assert forward_mover.move(Direction.UP)
assert forward_mover.state.box_position(
DEFAULT_PIECE_ID + 1
) == box_dest
assert forward_mover.state.pusher_position(
DEFAULT_PIECE_ID
) == pusher_dest
assert not forward_mover.board[box_src].has_box
assert not forward_mover.board[pusher_src].has_pusher
assert forward_mover.board[box_dest].has_box
assert forward_mover.board[pusher_dest].has_pusher
def it_memoizes_last_move_or_push(self, forward_mover):
forward_mover.move(Direction.DOWN)
assert forward_mover.last_performed_moves == [
AtomicMove(Direction.DOWN, False)
]
forward_mover.move(Direction.RIGHT)
assert forward_mover.last_performed_moves == [
AtomicMove(Direction.RIGHT, False)
]
forward_mover.move(Direction.UP)
assert forward_mover.last_performed_moves == [
AtomicMove(Direction.UP, True)
]
def it_refuses_to_push_box_into_obstacle(self, forward_mover):
with pytest.raises(IllegalMoveError):
forward_mover.move(Direction.RIGHT)
def it_refuses_to_move_pusher_into_obstacles(self, forward_mover):
assert forward_mover.move(Direction.UP)
with pytest.raises(IllegalMoveError):
forward_mover.move(Direction.UP)
