How to rotate a Rigidbody without rotating the gameObject?

Thanks for the reply! I need free movement as I require the object to move around an open world but I cannot allow the player object to rotate when I rotate the camera. eg. "W" key to roll forward, look right with mouse, "W" key to roll sideways if that makes sense.. Are you saying I need to control the player movement via the camera controller? Because I have this currently as my player controller: using UnityEngine; using System.Collections;

 public class PlayerController : MonoBehaviour {
 
     private Rigidbody playerRb;
     public float moveSpeed;
 
     void Start ()
     {
         playerRb = GetComponent<Rigidbody>();
     }
 
     void FixedUpdate () 
     {
         float moveHorizontal = Input.GetAxis ("Horizontal");
         float moveVertical = Input.GetAxis ("Vertical");
 
         Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
 
         playerRb.AddForce (movement * moveSpeed);
     }
 }

And I have the standard import scripts for the camera controller, using just SmoothLookAt.js and MouseOrbit.js (I haven't used much JavaScript at all so I'm not sure at all how to code it into the standard scripts) :/

Hopefully its not too much to ask how I could do it? Thanks.

You'll need to calculate "movement" like this:

 Vector3 movement = cam.forward * moveVertical + cam.right * moveHorizontal;

(where "cam" is a reference to the camera's transform)

Vector3 movement = cam.forward moveVertical + cam.right moveHorizontal;

Life saver