Why am i getting a null reference?

Question

My Script is:

 void DestroyBlock ()
     {
         if (Physics.Raycast(Camera.main.transform.position, Camera.main.transform.forward, out $$anonymous$$t, range))
         {
             if ($$anonymous$$t.collider.transform.parent.tag == "Block")
             {
                 Destroy($$anonymous$$t.collider.transform.parent.gameObject);
                 
                 Vector3 $$anonymous$$tPos = $$anonymous$$t.collider.transform.parent.transform.position;
                 
                 int x = (int) $$anonymous$$tPos.x;
                 int y = (int) $$anonymous$$tPos.y;
                 int z = (int) $$anonymous$$tPos.z;
                 
                 Destroy(levelData[x, y, z].gameObject); *** t$$anonymous$$s is where the error is
                 dataScript.levelData = levelData;
             }
         }
     }

null reference exception: object reference not set to an instance of an object

Answer 1

Answer by thepenguinmaster · Dec 09, 2014 at 02:27 PM

levelData[x, y, z] is throwing an error because you never declared the variable. Also you need to set data into the array. It is likely that where you are populating the data, one of the objects is null. Given the code you posted, there is no way for us to provide further help.

The code you posted is where you see the error, but not where the error is caused. You will need to post the code where the array is declared, and the values are set into the array, then we may be able to help.

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Why am i getting a null reference?

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