Character controllers not colliding with each other

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1

I'm starting to learn unity . My current project simulates a dinner party; guests walk around randomly and when they hit another guest, they stop and chat for a while before wandering off. My problem is that the guests do not detect collisions with each other. They slide around each other, and continue on.

I'm using OnControllerColliderHit to detect collisions. This triggers when hitting the walls, but not another guest.

function OnControllerColliderHit (hit : ControllerColliderHit) { 
   if ((hit.gameObject.tag == "guest") && (isChatting == false)) { 
      isChatting = true; 
      } 
   else { 
      newHeading(); 
   } 
}

Have I made an error, or is there some aspect of the controller/engine/script I don't understand? Or, is there a better way to do this?

Thanks

2

You will need to place another collider on each "Guess" if they are only using a character controller. Just add a capsule or box collider. Unity should ask you to add or replace and you can just add. Although for the 'Guests" I would personally not use a Character Controller.

This page has a collision action matrix that shows which colliders react with which.

The table is not laid-out very well but if you highlight the text you can make out where the columns and rows are ;)

http://unity3d.com/support/documentation/Components/class-MeshCollider.html