code: def tile_id_in_direction(from_tile_id, direction):
      
      coord_from = tile_id_to_coord(from_tile_id)
      for offset, dirn in _tile_tile_offsets.items():
          if dirn == direction:
              coord_to = coord_from + offset
              if coord_to in legal_tile_coords():
                  return tile_id_from_coord(coord_to)
      return None
docs: Variant on direction_to_tile. Returns None if there's no tile there.
  
      :param from_tile_id: tile identifier, int
      :param direction: str
      :return: tile identifier, int or None