Object reference not set to an instance of an object

Hey, so I have a problem. Iv'e just started making a game, and already can't get my controller/motor scripts to work. Heres is the error code I'm getting

"NullReferenceException: Object reference not set to an instance of an object
PlayerController.Update () (at Assets/PlayerController.cs:29)"

Yeah, so here's the scripts, (playercontroller first)

Code (CSharp):

1. using UnityEngine;
2.  
3. [RequireComponent(typeof(PlayerMotor))]
4. public class PlayerController : MonoBehaviour {
5.  
6.     [SerializeField]
7.     private float speed = 5;
8.  
9.     private PlayerMotor motor;
10.  
11.     void Start ()
12.     {
13.         motor = GetComponent<PlayerMotor> ();
14.     }
15.  
16.     void Update ()
17.     {
18.         //Calculate movement velocity as a 3d Vector
19.         float _xMov = Input.GetAxisRaw("Horizontal");
20.         float _zMov = Input.GetAxisRaw("Vertical");
21.  
22.         Vector3 _movHorizontal = transform.right * _xMov;
23.         Vector3 _movVertical = transform.forward * _zMov;
24.  
25.         //final movement vector
26.         Vector3 _velocity = (_movHorizontal + _movVertical.normalized * speed);
27.  
28.         //apply movement
29.         motor.Move(_velocity);
30.        
31.     }
32.  
33.  
34. }
35.  

And here is the motor script

Code (CSharp):

1. using UnityEngine;
2.  
3.  
4. [RequireComponent(typeof(Rigidbody))]
5. public class PlayerMotor : MonoBehaviour {
6.  
7.     private Vector3 velocity = Vector3.zero;
8.  
9.     private Rigidbody rb;
10.  
11.     void Start ()
12.     {
13.         rb = GetComponent<Rigidbody> ();
14.     }
15.  
16.     //Gets a movement vector
17.     public void Move (Vector3 _velocity)
18.     {
19.         velocity = _velocity;
20.     }
21.  
22.     //Run every physics iteration
23.     void FixedUpdate ()
24.     {
25.         performMovement ();
26.     }
27.     //Perform movement based on velocity variable
28.     void performMovement ()
29.     {
30.         if (velocity != Vector3.zero)
31.         {
32.             rb.MovePosition (transform.position + velocity * Time.fixedDeltaTime);
33.         }
34.     }
35.    
36.  
37. }
38.  

Any help is greatly appreciated

 

Have you tried just using

Code (CSharp):

1. motor = GetComponent(PlayerMotor);

in your Start() function? Sometimes there are problems when trying to use GetComponent the way you have it.

 

So that made the error go away but made 3 new ones.

here they are

Assets/PlayerController.cs(13,38): error CS0119: Expression denotes a `type', where a `variable', `value' or `method group' was expected

Assets/PlayerController.cs(13,25): error CS1502: The best overloaded method match for `UnityEngine.Component.GetComponent(System.Type)' has some invalid arguments

Assets/PlayerController.cs(13,25): error CS1503: Argument `#1' cannot convert `object' expression to type `System.Type'


Do you know how i could solve these.. But either way thanks for the help

 

Try

Code (CSharp):

1. GetComponent("PlayerMotor") as PlayerMotor;

...?

I think I accidentally gave you a JavaScript format before. Oops.

 

Thank you so much, that fixed my problem, but there is a little bit more. Currently I can only walk forwards and backwards, not sideways, do you know why I'm not able to walk sideways?

 

Scratch that, it works great now, i just had to change the input for horizontal, whoops. But thanks so much for the help :