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Question by infinitypbr · Jun 21, 2013 at 08:29 PM · raycastenemyhit

Ray from enemy to player is always a bit off (Image)

I've got a ray from the enemy to the player, and a line showing the ray in unity. The ray always seems to fire just to the side of the player, so it never actually hits.

alt text

Here is my code:

 var rayDirection = other.gameObject.transform.position - transform.position;
         rayDirection.y += 1;
         var currentPosition = transform.position;
         currentPosition.y += 1;
         var hit : RaycastHit;
         Debug.DrawLine (currentPosition, rayDirection, Color.yellow, 3);
         if(Physics.Raycast(transform.position, direction, hit, viewDistance)) 
         {
             print ("Sent Raycast");
             Debug.DrawLine (transform.position, hit.point, Color.cyan, 3);
             if(hit.collider.gameObject.tag == "Player")
             {
                 print("Player found");
             }
         }

So I'm wondering why this is happening?

screen shot 2013-06-21 at 1.22.24 pm.png (466.6 kB)
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Answer by Slobdell · Jun 21, 2013 at 09:11 PM

What is that math you're doing for the raycast direction(which is actually a vector3 location not a direction)? If you want the raycast to shoot toward and object, give it only the objects position. Why are you subtracting something else from it?

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avatar image infinitypbr · Jun 21, 2013 at 09:27 PM 0
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I was under the impression that it was a direction.

The code works:

 if(Physics.Raycast(transform.position, direction, hit, viewDistance)) 
avatar image infinitypbr · Jun 21, 2013 at 09:42 PM 0
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Actually, I take that back. That code fixed the DrawLine, but did NOT fix the raycast. In fact, the Raycast does seem to need a direction, not an end point.

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