Help with Better Terrain

Godot Version

4.6

Question

I am having trouble getting better terrain to do what I want

What’s going wrong?
Is there a better way to go about this?

What I’m trying to get via better terrain

my best effort so far

I have painted the floor terrain in the centre, that’s working perfectly.

I have left a gap immediately above the floor, which is correctly being filled in with the wall decoration tile I set up.

My problems are occurring with the wall_top terrain. All the other tiles visible (52 I think) are painted as wall_top. The corners are randomly showing up on the wall_top/floor boundary adjacent to the corners.

I think I could solve my issues with a “don’t place if connected to floor terrain” rule, but I don’t know how to do that or if you can. I know in Unity you could specify yes,no,maybe for each of the 8 directions, but I think it’s just yes or maybe in Better Terrain.

My terrains: floor

wall_top

wall or floor category

decoration