Rotating rigidbody to follow Mouse X

Questions & Answers
1

I have a transform with a rigidbody attached. I want to rotate this rigidbody based on Mouse X. I figured it would be best to add a GameObject like a cylinder with NO rigidbody and then attach the MouseLook component to it. Then When this transform rotates I want the rigidbody to rotate to the exact same place and stop.

Well, it turns out that this is a lot harder than I expected. I can do this pretty easily with 2 transforms and no rigidbody but the addition of the rigidbody makes this ridiculously difficult. This rigidbody is attached to another rigidbody with a configurable joint (which acts more like a rubber band than a joint).

I’m using this code with undesirable results:

    var q = Quaternion.LookRotation(myTransform.eulerAngles);
    var str = Mathf.Min (speed * Time.fixedDeltaTime, 1);
    rigidbody.MoveRotation(Quaternion.Slerp(rigidbody.rotation, q, str));

I’ve tried many many many variations of this as well.

2

it is highly recommended to interact with objects that have rigidbody via their rigidbodies is they are supposed to take part in physical interractions. So I guess that will work best.

public class TestScript : MonoBehaviour {

	public float rotationSpeed = 1f;

	void FixedUpdate () {
		rigidbody.rotation = Quaternion.Euler(rigidbody.rotation.eulerAngles + new Vector3(0f, rotationSpeed*Input.GetAxis("Mouse X"), 0f));
	}
}