Player movement based on camera?

Hey guys, I'm having quite some problems with the player movement script.

I want to make the character movement based on the camera: for example, when I press W, the character will move and turn to the direction where the camera is facing.

Here's what I have now:

 public float speed = 6f;            // The speed that the player will move at.
     public float rotateSpeed = 2f;
     
     Vector3 movement;                   // The vector to store the direction of the player's movement.
     Animator anim;                      // Reference to the animator component.
     Rigidbody playerRigidbody;          // Reference to the player's rigidbody.
     int floorMask;                      // A layer mask so that a ray can be cast just at gameobjects on the floor layer.
     float camRayLength = 100f;          // The length of the ray from the camera into the scene.
     Vector3 rotationY;
 
     void Awake ()
     {
         // Create a layer mask for the floor layer.
         floorMask = LayerMask.GetMask ("Floor");
         
         // Set up references.
         anim = GetComponent <Animator> ();
         playerRigidbody = GetComponent <Rigidbody> ();
     }
     
     
     void FixedUpdate ()
     {
         // Store the input axes.
         float h = Input.GetAxisRaw ("Horizontal");
         float v = Input.GetAxisRaw ("Vertical");
         
         // Move the player around the scene.
         Move (-h, -v);
         
         // Turn the player to face the mouse cursor.
         Turning (h, v);
         
         // Animate the player.
         Animating (h, v);
     }
     
     void Move (float h, float v)
     {
         // Set the movement vector based on the axis input.
         movement.Set (h, 0f, v);
         
         // Normalise the movement vector and make it proportional to the speed per second.
         movement = movement.normalized * speed * Time.deltaTime;
         
         // Move the player to it's current position plus the movement.
         playerRigidbody.MovePosition (transform.position + movement);
     }
     
     void Turning(float y, float x) 
     {    
         if (y != 0) {
             rotationY.Set (0f, y, 0f);
             rotationY = rotationY.normalized * (5 * rotateSpeed);
             Quaternion deltaRotation = Quaternion.Euler (rotationY);
             playerRigidbody.MoveRotation (deltaRotation);
         }
     }