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Question by chartinboy · Apr 14, 2012 at 12:58 PM · c#raycastupdateray

Raycast stops when false, even in update()

Hi there,

I've got a raycast to check whether a target can be fired at (as in, if he;s not behind a wall, etc)

here's the code-

     Vector3 fwd = (target.transform.position - transform.position).normalized;
     RaycastHit hit;
     Debug.DrawRay(transform.position, fwd * 10, Color.blue);
 if (Physics.Raycast(transform.position, fwd, out hit, 20)) {
     Debug.Log(hit.collider.gameObject.name);
         if(hit.collider.gameObject.tag  == "enemy") {
                     controlthing.GetComponent<lightning>().shouldgo = true;
         }
         else if(hit.collider.gameObject.tag  != "enemy") {
                 controlthing.GetComponent<lightning>().shouldgo = false;
         
         }

         
     }

Can anyone see what i'm doing wrong here?

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avatar image Owen-Reynolds · Apr 14, 2012 at 04:30 PM 0
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What is the problem? Does it never shoot, or sometimes shoot if you are just behind a wall, etc... .

What does "stops when false" mean? Do you mean that it stops doing raycasts?

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Answer by Tseng · Apr 14, 2012 at 01:03 PM

You sure you used "enemy" as tag and not "Enemy"? It's case sensitive.

Second, consider using "CompareTag" instead of ".tag == xyz". CompareTag will also check if the tag is available and give a warning if you compare an tag which doesn't exist.

Third, the second "else if" is not necessary. If the tag equals to enemy it goes in the "if"-branch if not it goes into "else". No need for extra check (and processing).

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