Question Unable to rotate transform's Z value when also using LookAt on that Transform

I'm using the below code to have the transform look at the camera, the below function updates the X and Y rotation value of my transform:

Code (CSharp):

1. transform.LookAt(transform.position + cam.transform.forward, cam.transform.up);

I want to also, while having the transform looking at the camera to rotate on the Z axis using the below code

Code (CSharp):

1. transform.Rotate(Vector3.forward * speed * Time.deltaTime);

Result is the transform looks at the camera but the Z rotation is being overwritten, rotating very little and resetting

I also tried using the below code to achieve look at camera which still overwrites my Rotate code

Code (CSharp):

1.         Vector3 targetDirection = cam.transform.position - transform.position;
2.         targetDirection.y = 0f;
3.         transform.rotation = Quaternion.LookRotation(targetDirection, Vector3.up);

 

I think this is just a situation where you need to make another game object that's a child of the transform being controlled with LookRotation, and rotate that child instead.

 

That does it, thank you

 

The other solution, which you were working towards, is to use the existing "up" in the lookAt:

transform.LookAt( ... , transform.up);

. As you noted, LookAt always resets the z rotation. It has to. The 2nd input says how to reset it. The most common input, Vector3.up, resets to world up.