Two Character Controllers Colliding with each other

Unity Engine
1

Hi all,

I know this question has been asked numerous times, but I haven’t found a really concrete answer. In the game I’m making, the player and the AI both have character controllers and nothing happens inside OnControllerColliderHit when they collide. Is there a workaround or something that can get this to work? I know I can just switch the AI to rigidbodies and I’m sure the problem would just solve itself, but I’d rather not do that unless I absolutely have to.

Any help would be greatly appreciated. Thanks!

2

2 character controllers will never collide (physically they will block each other, but no message is sent).
Your options are things like, add trigger volumes to each, which monitor OnTriggerEnter

3

By trigger volumes you mean rigidbodies right? That won’t interfere with other collisions? (i.e The character controller and its collision with waypoints)

4

No i mean trigger colliders. add a sphere/box/capsule collider, and tick trigger. It doesnt cause any physics interactions, but does react to other colliders entering it’s volume

5

I use this trigger solution on my project and it works fine, just be careful if you are allowing collisions between triggers or between triggers and RayCasts.

6

If I give both the player and the AI trigger colliders then how would I be careful?

7

Re: triggers triggering each other, just check for tag on enter
Re: raycasts, put the triggers on their own layers, and just layermask the raycasts

8

Ok, that makes sense.

Alright to recap:

Add a collider to the object itself, don’t make it a child

Handle my current collisions normally using OnControllerColliderHit and if the same happens in OnTriggerEnter just check for tags.

Sorry if I seem annoying, just want to make sure I have this correct.

9

should be Add a collider to the object itself, don’t make it a child and make sure the “IsTrigger” option is selected for that collider.

10

Thanks everyone. I really appreciate the help. Happy Easter.