Unity 5: Creating New Movement System

2 Hours Research
2 Hours Code/Assets

    After several hours of playing with codes and figuring out how rays work I created a new movement system for the spaceship. It now turns to where ever the mouse is pointing, all I need now is a way to make it slow down. I know of one method Quaternion.Slerp but I cannot get it to work. The movement part of the system uses a force multiplier system, if you use drag and angular drag on the ridged body it accounts for a autoslow and max speed system. Its not the best but it will do for now.

Add a new layer, call it "Floor" change the background to the layer Floor.

Add to top variables

    //Movement Variables

    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 = 1000f;          // The length of the ray from the camera into the scene.
    Vector3 rotationFix = new Vector3(0, 0, 0);
    public float movementSpeed = 5.0f;

Add Awake to the top Clear out Fixed update and add

    void Awake ()
    {
        // Create a layer mask for the floor layer.
        floorMask = LayerMask.GetMask ("Floor");


        // Set up references.
        playerRigidbody = GetComponent <Rigidbody> ();
    }
// Transform direction is dependant on what angle you are using.
    void FixedUpdate () // FixedUpdate runs with physics
    {
        if (Input.GetKey(KeyCode.W))
        {
            playerRigidbody.AddForce(transform.up * movementSpeed);
        }
        else if (Input.GetKey(KeyCode.S))
        {
            playerRigidbody.AddForce(transform.up * movementSpeed);
        }
        else if (Input.GetKey(KeyCode.A))
        {
            playerRigidbody.AddForce(-transform.forward * movementSpeed);
        }
        else if (Input.GetKey(KeyCode.D))
        {
            playerRigidbody.AddForce(transform.forward * movementSpeed);
        }

        // Turn the player to face the mouse cursor.
        Turning();

        // Animate the player.
    }

    void Turning()
    {
        // Create a ray from the mouse cursor on screen in the direction of the camera.
        Ray camRay = Camera.main.ScreenPointToRay(Input.mousePosition);

        // Create a RaycastHit variable to store information about what was hit by the ray.
        RaycastHit floorHit;

        // Perform the raycast and if it hits something on the floor layer...
        if (Physics.Raycast(camRay, out floorHit, camRayLength, floorMask))
        {
            // Create a vector from the player to the point on the floor the raycast from the mouse hit.
            Vector3 playerToMouse = floorHit.point - transform.position;

            // Ensure the vector is entirely along the floor plane. Axis must be the only one not being used by the player to move in.
            playerToMouse.z = 0f;

            // Create a quaternion (rotation) based on looking down the vector from the player to the mouse.
            Quaternion newRotatation = Quaternion.LookRotation(playerToMouse);
           //Quaternion.Euler is to correct for the 2d angle.
            newRotatation *= Quaternion.Euler(90, 0, 0);

            // Set the player's rotation to this new rotation.
            playerRigidbody.MoveRotation(newRotatation);
        }
    }