Help with fixing NullReferenceException

Questions & Answers
1

Hello,
During runtime I get an obnoxious amount of NullReferenceException error from this line

   if(hit.transform.gameObject.tag != null){

I know why this is, its because the gameobject does not exist, how would I check to see if something exists without referencing it?
Thanks

2

maybe try

 if(hit.transform)
3

I guess that your “hit” variable is a RaycastHit which should be related to a Physics.Raycast call. “hit” is only valid when Physics.Raycast returns true. Without the code around this line you posted we can’t say what’s wrong.

If it’s really this line i just guess that hit is not initialized and hit.transform is null. The tag of a gameobject usually can’t be null. If it has no tag it’s usually an empty string.

4

Is it a raycast? try this:

 RaycastHit hit;
 Vector3 direction = Vector3.forward;
 float distance = 1.0f;
 if(Physics.Raycast(transform.position, direction, out hit, distance)){
   if(hit.collider.tag != null){

   }
 }