Player Falling Through Rigid Body?

Help & Support
1

Sorry for posting so much but I have been enjoying the engine :face_with_open_eyes_and_hand_over_mouth:. My character controller keeps falling through the map at a specific point but I have no idea why. I have checked the mesh (vertices, normals etc…) and everything looks fine. I have also tried to make the collision volume thicker but no luck. Everywhere else where I have walked has been fine.

Here is the offending scene:
https://playcanvas.com/editor/scene/2181714

I placed a box on top of the area where I fall through. The terrain is divided into tiles for rendering but is solid for collision.

2

It is an issue with Ammo. Try changing the offending quad in the ground mesh (2 triangles) - change its diagonal from going right-left to left-right, basically rotate the triangles.

image

3

Is this an issue with triangles only or can it affect quads as well?

4

A quad is always 2 triangles. As far as Ammo is concerned, it can only see a soup of triangles.

1 Like
5

Is there any way to predict where this issue will occur on a mesh or any techniques that can be used to minimize it?

6

Ah I just found this thread [SOLVED] Terrain generation | Falling through mesh :slightly_smiling_face:

1 Like
7

I also find that the player will bounce around wildly on very big collisions, is there any way to prevent this other than just subdividing?

8

I am not sure what you mean by a big collision. Feel free to create a new topic, though, as it doesn’t seem related to the issue this thread is about.