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Question by xCeas · Dec 23, 2013 at 03:14 PM · disableenable

[Solved]cant disable/enable scripts

 private CameraFollow follow;
 private CameraFollow follow;
     private MouseLook look;
 
     // Use this for initialization
     void Start () {
         transform.parent = null;
         look = Camera.main.GetComponent<MouseLook>();
         follow = Camera.main.GetComponent<CameraFollow>();
     }
     
     // Update is called once per frame
     void Update () 
     {
         GameObject target = GameObject.Find("pc");
         if(Input.GetAxis("Mouse ScrollWheel") > 0)
         {
             transform.parent = target.transform;
             look.enabled = false;
             follow.enabled = true;
         }
         if(Input.GetAxis("Mouse ScrollWheel") < 0)
         {
             transform.parent = null;
             look.enabled = true;
             follow.enabled = false;
         }
     }

I try to disable my third person camera on zoom in and disable my first person camera on zoom out but this script tends to error nullreference object I fail to see what is my error

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avatar image vexe · Dec 24, 2013 at 05:13 PM 0
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@xCeas your question title says it's solved. Did the answer below help you to? if so, you should tick it as correct ;)

avatar image xCeas · Dec 26, 2013 at 09:29 PM 0
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It didn't help but for closing I'll mark it so, I just put the change camera person in the CameraFollow script and solved it.

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Answer by KellyThomas · Dec 23, 2013 at 03:30 PM

The first thing I notice is that you have the top two lines repeating themselves, I doubt this would compile so it must be a copy/paste error?

The next thing I notice is that these three lines could result in null references:

 look = Camera.main.GetComponent<MouseLook>();
 follow = Camera.main.GetComponent<CameraFollow>();
 GameObject target = GameObject.Find("pc");

It is good practice to perform null checking (at least when debugging) after operations like these.

It can be as simple as:

 look = Camera.main.GetComponent<MouseLook>();
 if(look == null) {
     Debug.Log("GetComponent<MouseLook>() returned null");
 }

If you perform a similar check after each line identified above you should be able to determine when the nulls are creeping in.

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avatar image xCeas · Dec 23, 2013 at 03:49 PM 0
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it retuns null like you suggested but that's wierd since I added the main camera manually both of the scripts

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