def is_possible_move(board: Board, current: Point, new: Point):
x = current.get_x()
y = current.get_y()
if board.is_barrier_at(x, y):
return False
nx = new.get_x()
ny = new.get_y()
if (abs(nx - x) + abs(ny - y)) > 1:
return False
if board.is_barrier_at(nx, ny):
return False
if (ny - y == -1) and (not board.has_ladder_at(x, y)):
return False
yd = y + 1
if (
(ny - y != 1) and
(not board.is_barrier_at(x, yd)) and
(not board.has_ladder_at(x, yd)) and
(not board.has_ladder_at(x, y)) and
(not board.has_pipe_at(x, y))
):
return False
return True
def check_moves(board: Board, current: Point):
moves = {(1, 0),(0, 1),(-1, 0),(0, -1)}
available_moves = []
for move in moves:
new = Point(current.get_x() + move[0], current.get_y() + move[1])
if is_possible_move(board, current, new):
available_moves.append(new)
return available_moves
