Player sometimes falls through ground (plane) when walking into objects?

Questions & Answers
1

Hi,
My 3rd person player in my 3D game has a Character Controller component and no collider (although I’ve tried with a box/capsule collider as well). For the ground (a plane), I’ve tried a box collider with 0 height and nonzero height and a mesh collider.

This used to work fine, but at some point along the way, my player has started falling through the plane when walking into/next to objects with various colliders. This only happens sometimes, but the surefire way to make it happen is by letting a navmeshagent NPC with a capsule collider walk into the player.

I’ve tried changing the Default Contact Offset in the physics project settings from 0.01 to 0.1 following a suggestion I found online, but I didn’t notice any difference.

I’d be very appreciative of any suggestions on how to fix this. Thanks!

2

Hi,

Try this out. To me it seams given your description that there is a lot going on and try with the basic settings as below first.

  1. Check that the floor only have a box collider and that it’s not a trigger
  2. Check that the player has a Capsule collider
  3. For the player Uncheck is kinematic on the rigidbody
  4. For the player Uncheck use gravity on the rigidbody
3

Decreasing the skin width on my Character Controller component fixed this issue for me. It was set to .01 and I changed it to .1.