Convenience method wrapping tile_tile_offset_to_direction. Used to get the direction
    of the offset between two tiles. The tiles must be adjacent.

    :param from_tile_id: tile identifier, int
    :param to_tile_id: tile identifier, int
    :return: direction from from_tile to to_tile, str

def direction_to_tile(from_tile_id, to_tile_id):
    """
    Convenience method wrapping tile_tile_offset_to_direction. Used to get the direction
    of the offset between two tiles. The tiles must be adjacent.

    :param from_tile_id: tile identifier, int
    :param to_tile_id: tile identifier, int
    :return: direction from from_tile to to_tile, str
    """
    coord_from = tile_id_to_coord(from_tile_id)
    coord_to = tile_id_to_coord(to_tile_id)
    direction = tile_tile_offset_to_direction(coord_to - coord_from)
    # logging.debug('Tile direction: {}->{} is {}'.format(
    #     from_tile.tile_id,
    #     to_tile.tile_id,
    #     direction
    # ))
    return direction