Why can't some NPCs walk up ramps?

[mrminiondev]

There’s a couple of enemies in my game, but I’ve noticed some of them either struggle to or just straight up can’t go up ramps. I have stairs in my game which have invisible 45 degree ramps over them to help NPCs go up them and make it looks smoother when players go up them. For MOST enemies this works but with like 2 of them so far this doesn’t work.

Some background about the enemies:
Their HumanoidRootParts are 1x1x1 balls that are always ground level at their feet. They are also the only part in each enemy that has collision.

[InfinityDesign (Zach)]

@mrminiondev

Their HumanoidRootParts are 1x1x1 balls that are always ground level at their feet. They are also the only part in each enemy that has collision.

This is exactly why. You need at least a stud or two of ground clearance so the invisible collider provided by Humanoid can do it’s thing.