Legacy Documentation: Version 4.6(go to latest)
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ControllerColliderHit.normal

public var normal: Vector3;

Description

The normal of the surface we collided with in world space.

	// print the point's normal we impacted
	function OnControllerColliderHit(hit : ControllerColliderHit) {
		Debug.Log("Normal vector we collided at: " + hit.normal);
	}

Note: When the CharacterController is colliding with an edge or a corner rather than a flat surface, the reported normal may be different when colliding with BoxColliders than when colliding with MeshColliders. This is due to a limitation in how PhysX handles Capsule/BoxCollider collisions.