transform.rotation assign attempt for 'WheelMeshFR' is not valid.

Unity Engine
1

Hi! I am using the wheel alignment script in a scene with many AI cars. With a few cars it works like it should but when I increase the number of cars, I get the following error occationally:

" transform.rotation assign attempt for ‘WheelMeshFR’ is not valid. Input rotation is { NaN, NaN, NaN, NaN }.
UnityEngine.Transform:set_rotation(Quaternion)
WheelAlignScript:Update() (at Assets/AIScripts/WheelAlignScript.js:26)"

Here is the wheel alignment script:

// Define the variables used in the script, the Corresponding collider is the wheel collider at the position of
// the visible wheel, the slip prefab is the prefab instantiated when the wheels slide, the rotation value is the
// value used to rotate the wheel around it's axel.
var CorrespondingCollider : WheelCollider;
var SlipPrefab : GameObject;
public var RotationValue : float = 0.0;

function Update () {

	// define a hit point for the raycast collision
	var hit : RaycastHit;
	// Find the collider's center point, you need to do this because the center of the collider might not actually be
	// the real position if the transform's off.
	var ColliderCenterPoint : Vector3 = CorrespondingCollider.transform.TransformPoint( CorrespondingCollider.center );
	
	// now cast a ray out from the wheel collider's center the distance of the suspension, if it hit something, then use the "hit"
	// variable's data to find where the wheel hit, if it didn't, then se tthe wheel to be fully extended along the suspension.
	if ( Physics.Raycast( ColliderCenterPoint, -CorrespondingCollider.transform.up, hit, CorrespondingCollider.suspensionDistance + CorrespondingCollider.radius ) ) {
		transform.position = hit.point + (CorrespondingCollider.transform.up * CorrespondingCollider.radius);
	}else{
		transform.position = ColliderCenterPoint - (CorrespondingCollider.transform.up * CorrespondingCollider.suspensionDistance);
	}
	
	// now set the wheel rotation to the rotation of the collider combined with a new rotation value. This new value
	// is the rotation around the axle, and the rotation from steering input.
	transform.rotation = CorrespondingCollider.transform.rotation * Quaternion.Euler( RotationValue, CorrespondingCollider.steerAngle, 0);
	// increase the rotation value by the rotation speed (in degrees per second)
	RotationValue += CorrespondingCollider.rpm * ( 360/60 ) * Time.deltaTime;
	
	// define a wheelhit object, this stores all of the data from the wheel collider and will allow us to determine
	// the slip of the tire.
	var CorrespondingGroundHit : WheelHit;
	CorrespondingCollider.GetGroundHit( CorrespondingGroundHit );
	
	// if the slip of the tire is greater than 2.0, and the slip prefab exists, create an instance of it on the ground at
	// a zero rotation.
	if ( Mathf.Abs( CorrespondingGroundHit.sidewaysSlip ) > 1.5 ) {
		if ( SlipPrefab ) {
			Instantiate( SlipPrefab, CorrespondingGroundHit.point, Quaternion.identity );
		}
	}
	
}

Thanks in advance

2

bump

3

Did you get the problem out,I got the same