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Question by Junske · Dec 05, 2014 at 11:48 AM · javascript

whats wrong? nullpointer

whats wrong with this code, in my other scene it works perfectly. im trying to use the same code in another script and scene. everytime i run it, it crash instantly.

NullReferenceException: Object reference not set to an instance of an object RaycasterBasic2.OnGUI () (at Assets/Standard Assets/Character Controllers/Sources/Scripts/RaycasterBasic2.js:46)

here is my code:

     if(hit.collider.gameObject.tag == "cat"){ //<---line 46
     {
         Timer += Time.deltaTime;
         if (Timer > 5)     
     
      GUI.Box(Rect(Screen.width / 1.35 - 100, Screen.height / 2 - 100, 300, 150), "CAT", GuiStyle);
     }
   }
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Answer by Radivarig · Dec 05, 2014 at 01:04 PM

place this above line 46

 if(hit ==null) Debug.Log("hit is null");
 if(hit.collider ==null) Debug.Log("hit's collider is null");

the one that debugs to console is causing the error. I assume your hit returned null because it didn't hit anything so it collided with nothing.

To prevent

  if(hit && hit.collider && hit.collider.gameObject.tag == "cat"){
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avatar image Junske · Dec 16, 2014 at 07:20 PM 0
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allright, so this one helps me to found which one occurs the nullointer. It was the "hit's collider is null". So how can I fix this? I have no idea....

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