NullReferenceException: Object reference not set to an instance of an object

I can't figure out what is the problem...

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. [RequireComponent (typeof(SpriteRenderer))]
6.  
7. public class tiling : MonoBehaviour
8. {
9.     public int offsetX = 2;
10.     public bool hasARightBuddy = false;
11.     public bool hasALeftBuddy = false;
12.     public bool reverseScale = false;
13.  
14.     private float spriteWidth = 0f;
15.     private Camera cam;
16.     private Transform myTransform;
17.  
18.     void Awake()
19.     {
20.         cam = Camera.main;
21.         myTransform = myTransform;
22.     }
23.  
24.     void Start()
25.     {
26.         SpriteRenderer sRenderer = GetComponent<SpriteRenderer>();
27.         spriteWidth = sRenderer.sprite.bounds.size.x;
28.     }
29.  
30.     void Update()
31.     {
32.         if (hasALeftBuddy == false || hasARightBuddy == false)
33.         {
34.             // calculate the cameras extend of what it can see in world coords
35.             float camHorizontalExtend = cam.orthographicSize * Screen.width / Screen.height;
36.  
37.             // calculate x pos where the camera can see edge of sprite
38.             float edgeVisiblePositionRight = (myTransform.position.x + spriteWidth / 2) - camHorizontalExtend;
39.             float edgeVisiblePositionLeft = (myTransform.position.x - spriteWidth / 2) + camHorizontalExtend;
40.  
41.             // check if we can see the edge of the element
42.             if (cam.transform.position.x >= edgeVisiblePositionRight - offsetX && hasARightBuddy == false)
43.             {
44.                 MakeNewBuddy(1);
45.                 hasARightBuddy = true;
46.             }
47.             else if (cam.transform.position.x <= edgeVisiblePositionLeft + offsetX && hasARightBuddy == false)
48.             {
49.                 MakeNewBuddy(-1);
50.                 hasALeftBuddy = true;
51.             }
52.         }
53.     }
54.  
55.     // creates a buddy on the required side
56.     void MakeNewBuddy(int rightOrLeft)
57.     {
58.         // calculate new pos of the new buddy
59.         Vector3 newPosition = new Vector3(myTransform.position.x + spriteWidth * rightOrLeft, myTransform.position.y, myTransform.position.z);
60.        
61.         // instantiating new buddy and storing him in a variable
62.         Transform newBuddy = Instantiate(myTransform, newPosition, myTransform.rotation) as Transform;
63.  
64.         if (reverseScale == true)
65.         {
66.             newBuddy.localScale = new Vector3(newBuddy.localScale.x*-1, newBuddy.localScale.y, newBuddy.localScale.z);
67.         }
68.  
69.         newBuddy.parent = myTransform.parent;
70.         if (rightOrLeft>0)
71.         {
72.             newBuddy.GetComponent<tiling>().hasALeftBuddy = true;
73.         }
74.         else
75.         {
76.             newBuddy.GetComponent<tiling>().hasARightBuddy = true;
77.         }
78.     }
79. }
80.  

The code doesn't work but it runs, this should create a new foreground when the camera sees the edge of the foreground.

Then it says this:
tiling.Update () (at Assets/tiling.cs:38) which is this line:

Code (CSharp):

1. void Update()
2.     {
3.         if (hasALeftBuddy == false || hasARightBuddy == false)
4.         {
5.             // calculate the cameras extend of what it can see in world coords
6.             float camHorizontalExtend = cam.orthographicSize * Screen.width / Screen.height;
7.  
8.            // calculate x pos where the camera can see the edge of sprite
9.  *HERE*  float edgeVisiblePositionRight = (myTransform.position.x + spriteWidth / 2) - camHorizontalExtend;
10.             float edgeVisiblePositionLeft = (myTransform.position.x - spriteWidth / 2) + camHorizontalExtend;
11.  
12.             // check if we can see the edge of the element
13.             if (cam.transform.position.x >= edgeVisiblePositionRight - offsetX && hasARightBuddy == false)
14.             {
15.                 MakeNewBuddy(1);
16.                 hasARightBuddy = true;
17.             }
18.             else if (cam.transform.position.x <= edgeVisiblePositionLeft + offsetX && hasARightBuddy == false)
19.             {
20.                 MakeNewBuddy(-1);
21.                 hasALeftBuddy = true;
22.             }
23.         }
24.     }

 

Forgive me If i'm wrong but you never assign a value to myTransform, You just declare it but never assign a value to it.

 

setting null to null means its null.

myTransform = myTransform;