Originally posted by admacXx2
It is often that I see hacks with objects that depower Mario when he passes through them. These objects are usually in layer 3 so you don't see the non-animated small-making.
I was just wondering how people do this. I've made the depower block, but I can't figure out how to put it in layer 3.
You mean how they go above of Mario? This isn't layer 3, they're still on layer 1, just that the tile have got priority enabled (you can do ths on). Layer 3 in SMW is generally only used for the Status Bar and occasionally for backgrounds (layer 2 levels) and foreground. And out of those foregrounds, only two of them are interactive: Tides (which does
use Map16 but only for interaction) and the smasher (which is a more classical hitbox). Anything else is layer 3 only decorative.
Your confusion stems very likely from the fact that those tiles would
be placed on different layers in modern game engines. However, the priority system on the SNES can't be really compared to multiple layers and are closer to not really flexible sprites than a solid layer.