Function isVeinAt

library/include/modules/MapCache.h:153–158

Check if the base layer tile is a vein

    }
    /// Check if the base layer tile is a vein
    bool isVeinAt(df::coord2d p)
    {
        using namespace df::enums::tiletype_material;
        auto tm = tileMaterial(baseTiletypeAt(p));
        return tm == MINERAL;
    }
    /// Check if the base layer tile is layer stone or soil
    bool isLayerAt(df::coord2d p)
    {