Function is_wall

plugins/dig-now.cpp:332–336

}

static bool is_wall(MapExtras::MapCache &map, const DFCoord &pos) {
    if (!map.ensureBlockAt(pos))
        return false;
    return tileShape(map.tiletypeAt(pos)) == df::tiletype_shape::WALL;
}

static void clean_ramp(MapExtras::MapCache &map, const DFCoord &pos) {
    if (!map.ensureBlockAt(pos))