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Question by Rioneer · Jan 07, 2014 at 11:18 AM · collidernullreferenceexceptionnullexception

NullReferenceException question.

 void OnTriggerEnter(Collider collider)
 {
     if (collider.gameObject.tag == "bullet")
     {
         manager.SendMessage("Box",collider,SendMessageOptions.DontRequireReceiver);
     }
 }

Console says collider is a null reference. How come? All objects' colliders and triggers are enabled. How could an active collider be null? Thanks in advance.

Edit : My manager variable:

     GameObject manager;
 
     // Use this for initialization
     void Start () {
         manager = GameObject.Find("GameManager");
     }

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avatar image softrare · Jan 07, 2014 at 11:42 AM 0
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in which line you get the null reference?

avatar image Rioneer · Jan 07, 2014 at 11:59 AM 0
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5th line..

avatar image GameVortex · Jan 07, 2014 at 12:03 PM 1
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The only thing on the 5th line that can throw a NullReferenceException is the manager. Where do you set the value of the manager variable?

avatar image softrare · Jan 07, 2014 at 12:04 PM 0
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maybe its the manager object. make sure its not that one, because with that, I don't think we will be able to help much.

avatar image GameVortex · Jan 07, 2014 at 12:32 PM 1
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You should probably add some debug to the Start method to check that the manager actually gets a value after you have searched for it.

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Answer by Rioneer · Jan 07, 2014 at 01:00 PM

Thanks, everyone. I got rid of it by simply assigning value to manager variable in Awake() method.

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Answer by tanoshimi · Jan 07, 2014 at 11:22 AM

Because you've spelled it colllider.

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avatar image Rioneer · Jan 07, 2014 at 11:25 AM 0
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Haha, I must have done it while trying to edit the question a few minutes ago. Thanks for notifying though.

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