How can I completely prevent a mesh from falling off a platform? I’m working on a 2.5d game and I have that issue that if you walk and jump too frequently the player just fall off from the platform.
If collisions were set correctly and still the player can penetrate walls, probably walls normals are inverted. Try to rotate your wall 180 degrees and see what will happen
Another thing to make sure of is the height of the walls, make them higher than needed to be safe (I watch way too many speedrun history videos to know walls are a very common source of OOB trickery )
I was trying to fall on the PG you provided but wasn’t able to, it worked pretty well another thing to try would be to add a bit of thickness to the walls, to avoid a situation where the character moves so fast they pass through?