Hello! Can you make it, if the carpet is placed on a stair (or even on a slab...) then the carpet changes and covers the stair block.
Thank you :D
For that you would (probably) need to register all kinds of stairs with all kinds of carpets as an individual node...
Not really... you only have to make the carpet look different with the nodebox (which is possible, i tested it) when it is on top of a stair node.
Oh, I get it! Yeah! That's a cool way to handle it. I like it. Perhaps I'm gonna make it in my game...
Created new feature request on github for that: https://github.com/minetest-mods/carpets/issues/3