This mod is super hacky and I don't recommend it. To create such a block, you must manually put a "top slab" node on top of a normal node and you can only get those special top nodes in Creative Mode.
The top slab nodes also "blocks" the node above them, because technically the top slab is occupying the node above the bottom slab node. This means you cannot place anything above a stacked slab.
Worse, this mod allows you to place the top slabs anywhere, not just above slabs. If you place a top slab on just any random node, it "sinks" inside that node, causing ugly z-fighting (a graphical glitch).
Finally, this mod is not generic at all, only a few select Minetest Game nodes are supported.
This mod is super hacky and I don't recommend it. To create such a block, you must manually put a "top slab" node on top of a normal node and you can only get those special top nodes in Creative Mode. The top slab nodes also "blocks" the node above them, because technically the top slab is occupying the node above the bottom slab node. This means you cannot place anything above a stacked slab.
Worse, this mod allows you to place the top slabs anywhere, not just above slabs. If you place a top slab on just any random node, it "sinks" inside that node, causing ugly z-fighting (a graphical glitch).
Finally, this mod is not generic at all, only a few select Minetest Game nodes are supported.