Function isSkyBlock

plugins/3dveins.cpp:685–701

}

static bool isSkyBlock(Block *b)
{
    for (int x = 0; x < 16; x++)
    {
        for (int y = 0; y < 16; y++)
        {
            df::coord2d tile(x,y);
            auto dsgn = b->DesignationAt(tile);
            auto ttype = b->baseTiletypeAt(tile);

            if (dsgn.bits.subterranean || !dsgn.bits.light || !isTransientMaterial(ttype))
                return false;
        }
    }

    return true;
}

static int findTopBlock(MapCache &map, int x, int y)
{