f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
f->solidness = 0; // drawn separately, makes no faces
f->air_equivalent = true; // grass grows underneath
f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
f->solidness = 0; // drawn separately, makes no faces
f->air_equivalent = true; // grass grows underneath