Question Subtract top layer collision from bottom layer collision

Trivial task, Googled nothing close to this. So I have one tilemap layer "hills" with hills that have collisions (drawn with RuleTile). And then I have another tilemap layer "slopes" on top of it with slopes tiles. How can I subtract collision of "slopes" layer from "hills" layer?





Note: It has to be done this way (or similar) because of RuleTile usage. Hills are drawn like that (and other terrain) to avoid manual placement. Thanks!
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Not sure what you mean by "subtract" but generally these types of things are implemented simply as there is no collider there on the slope. That's how things like Legend of Zelda seem to work.

 

Yet you missed "RuleTile" part
Managed to solve it with dynamic script that disables collision for tiles beneath slopes.

 

Until I understand how you "subtract collisions," there's no point even trying to consider the post further.

Glad you're up and going.