Need help on a newbie error

Hello, I just started getting into Unity and tried out my first game.
It is based on a tutorial by "Sebastian Lague" from Youtube (thanks for a great video).

This is PlayerPhysics.cs

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class PlayerPhysics : MonoBehaviour {
5. public void Go(Vector2 GoAmount){
6.                 transform.Translate(GoAmount);
7.         }
8.  
9. }
10.  

This is PlayerControl.cs

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. [RequireComponent(typeof(PlayerPhysics))]
5. public class PlayerControl : MonoBehaviour {
6.     //Player handling
7.     public float speed = 8;
8.     public float acceleration = 12;
9.  
10.     private float currentSpeed;
11.     private float targetSpeed;
12.     private Vector2 amountToMove;
13.  
14.     private PlayerPhysics playerPhysics;
15.  
16.     void Start () {
17.         playerPhysics = GetComponent<PlayerPhysics>();
18.     }
19.  
20.  
21.     void Update () {
22.         targetSpeed = Input.GetAxisRaw("Horizontal") * speed;
23.         currentSpeed = IncrementTowards(currentSpeed, targetSpeed, acceleration);
24.  
25.         amountToMove = new Vector2(currentSpeed, 0);
26.         playerPhysics.Go(amountToMove*Time.deltaTime);
27.     }
28.     //increase n towards target by speed
29.     private float IncrementTowards(float n, float target, float a) {
30.         if (n==target){
31.             return n;
32.         }
33.         else {
34.             float dir = Mathf.Sign(target - n); //must n be decreased or increased to get closer to the target
35.             n+=a*Time.deltaTime*dir;
36.             return(dir==Mathf.Sign(target-n))? n:target; //if n has now passed target then return target, otherwise return n
37.         }
38.     }
39. }
40.  

Error messages shown are:
NullReferenceException: Object reference not set to an instance of an object
PlayerControl.Update () (at Assets/scripts/PlayerControl.cs:26)

Help pls!

 

Well it looks like it is not finding the play physics script off of your gameObject. Do me a favor: change playerPhysics to public and start the game again. Then if you look in the inspector you should see a variable called Player Physics. Is there anything in there or is it empty?

 

Hey, thanks for the reply! I changed it to public now.
And it is not empty in inspector. It has codes from PlayerPhysics.cs

 

then again, inspector gone empty when I run the game second time.

 

Try adding gameObject. in front of the get component under the start method. I don't think it will help much but it might. Unity gets picky sometimes lol