Function is_wall

plugins/dig.cpp:242–245

}

static bool is_wall(const df::coord &pos) {
    df::tiletype *tt = Maps::getTileType(pos);
    return tt && tileShape(*tt) == df::tiletype_shape::WALL;
}

static bool is_rough_wall(int16_t x, int16_t y, int16_t z) {
    df::tiletype *tt = Maps::getTileType(x, y, z);