Function hasConstructionAt

library/include/modules/MapCache.h:228–233

        return baseMaterialAt(p);
    }
    bool hasConstructionAt(df::coord2d p)
    {
        if (!tiles) init_tiles();
        return tiles->con_info &&
               tiles->con_info->constructed.getassignment(p);
    }

    df::tiletype tiletypeAt(df::coord2d p);
    bool setTiletypeAt(df::coord2d, df::tiletype tt, bool force = false);