Character Body 3D getting stuck on stairs

[Crazy_games]

Godot Version

v4.3.stable.arch_linux

Question

Im having this issue in godot 3d where when i imported a blender file into godot with stairs the player controller always get stucks where you can’t move at all on the stairs, and i have no idea where to fix it, I made a stairs in godot with a csg stair maker script i found and it works perfectly fine, when i imported the blender file in i made sure to use the -col sufix so it will use a static body with a concave polygon collison shape. I don’t know if it just my model or a bug in the engine.
I forgot to mention that the player will just complety freeze, when touching one of the steps, no jumping, no moving, just forzen

[pennyloafers]

Its probably not the stairs but your player. In order to do stairs correctly for the player you either need to float the player using a ray cast to determine the height of the float, or simplify the collision shape of the stairs to make a smooth ramp.

A better video

Making A Physics Based Character Controller In Unity (for Very Very Valet)

[Crazy_games]

the player can’t even jump up the stairs or down, and i do have the code to make the player walk up the stairs working, so that is not the issue.

[pennyloafers]

@Crazy_games

use the -col sufix so it will use a static body with a concave polygon collison

I havent looked at the blender collision translation but you want a convex shape, not concave.

-convcol

[Crazy_games]

this works but i am curios if i should change all my colliders to -convcol

[pennyloafers]

Only use -col if the collision mesh has a bowl shape on any part. But performant collision shapes should just use convex anyways. Even if you have a bowl shape you can always simplify the collision shape into a few convex boxes. (at the loss of some surface accuracy.)