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

Hey guys, I´m new at this but I know this is one of the most common mistakes. I got some code that works fine, but the console keeps showing me this error in the line 53 and I simply don´t know how to fix it. Could u give a hand?

This is the message:

NullReferenceException: Object reference not set to an instance of an object
CameraFollow.HandleMovement () (at Assets/Scripts/CameraFollow.cs:53)
CameraFollow.Update () (at Assets/Scripts/CameraFollow.cs:27)

And this is my code (from CodeMonkey)

Code (CSharp):

1. using System;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class CameraFollow : MonoBehaviour
7. {
8.     private Func<Vector3> GetCameraFollowPositionFunc;
9.     public float cameraMoveSpeed;
10.  
11.     public float zoomOutMin;
12.     public float zoomOutMax;
13.     public void Setup(Func<Vector3> GetCameraFollowPositionFunc)
14.     {
15.         this.GetCameraFollowPositionFunc = GetCameraFollowPositionFunc;
16.     }
17.  
18.     public void SetCameraFollowPositionFunc(Func<Vector3> GetCameraFollowPositionFunc)
19.     {
20.         this.GetCameraFollowPositionFunc = GetCameraFollowPositionFunc;
21.     }
22.  
23.  
24.     // Update is called once per frame
25.     void Update()
26.     {
27.         HandleMovement();
28.  
29.         if (Input.touchCount == 2)
30.         {
31.             Touch touchZero = Input.GetTouch(0);
32.             Touch touchOne = Input.GetTouch(1);
33.  
34.             Vector2 touchZeroPrevPos = touchZero.position - touchZero.deltaPosition;
35.             Vector2 touchOnePrevPos = touchOne.position - touchOne.deltaPosition;
36.  
37.             float prevMagnitude = (touchZeroPrevPos - touchOnePrevPos).magnitude;
38.             float currentMagnitude = (touchZero.position - touchOne.position).magnitude;
39.  
40.             float difference = currentMagnitude - prevMagnitude;
41.  
42.             HandleZoom(difference - 0.05f);
43.         }
44.  
45.         HandleZoom(Input.GetAxis("Mouse ScrollWheel"));
46.  
47.  
48.  
49.     }
50.  
51.     private void HandleMovement()
52.     {
53.         Vector3 cameraFollowPosition = GetCameraFollowPositionFunc();
54.         cameraFollowPosition.z = transform.position.z;
55.  
56.         Vector3 cameraMoveDir = (cameraFollowPosition - transform.position).normalized;
57.         float distance = Vector3.Distance(cameraFollowPosition, transform.position);
58.  
59.  
60.         if (distance > 0)
61.         {
62.             Vector3 newCameraPosition = transform.position + cameraMoveDir * distance * cameraMoveSpeed * Time.deltaTime;
63.  
64.             float distanceAfterMoving = Vector3.Distance(newCameraPosition, cameraFollowPosition);
65.  
66.             if (distanceAfterMoving > distance)
67.             {
68.                 newCameraPosition = cameraFollowPosition;
69.             }
70.             transform.position = newCameraPosition;
71.         }
72.  
73.     }
74.  
75.     private void HandleZoom(float increment)
76.     {
77.         Camera.main.orthographicSize = Mathf.Clamp(Camera.main.orthographicSize - increment, zoomOutMin, zoomOutMax);
78.     }
79. }

Thanks in advanced

 

NullReferenceException, one of the easiest things to solve. Also one of the most common threads posted in this forum. It basically means one of your values is null, and you're trying to access a part of the null object. There's a sticky at the top of the forum specifically for this.

https://forum.unity.com/threads/how-to-fix-a-nullreferenceexception-error.1230297/

 

Thank you for the help! I was finally able to solve it