def _move_cell(self, cell: Cell):
# find possible directions
possible_directions = Direction.all_directions()
for c in self.__cells:
if c.column - cell.column == 0:
if c.row - cell.row == 1:
possible_directions.remove(Direction.DOWN)
elif c.row - cell.row == -1:
possible_directions.remove(Direction.UP)
elif c.row - cell.row == 0:
if c.column - cell.column == 1:
possible_directions.remove(Direction.RIGHT)
elif c.column - cell.column == -1:
possible_directions.remove(Direction.LEFT)
if cell.column == self._size - 1:
possible_directions.remove(Direction.RIGHT)
if cell.column == 0:
possible_directions.remove(Direction.LEFT)
if cell.row == self._size - 1:
possible_directions.remove(Direction.DOWN)
if cell.row == 0:
possible_directions.remove(Direction.UP)
# move if possible
if len(possible_directions) == 0:
return
cell.move(list(possible_directions)[0])
