Where does a Raycast come from?

"Forward" casts a ray in the z direction, right? Are you shure that this is the direction facing forward in the scene-view? $$anonymous$$aybe you have set some weird scale or rotation for the object this script is a component of and the z-axis is facing down?

when a mummy raycast and a daddy raycast love each other very much ....

First : what tutorial are you following? That shoot function with the while loop looks very scary. Having rbullets1 AND rbullets is VERY confusing.

When i "shoot" the tag it gives me is of the terrain : This is probably because the origin if the raycast is at the base of the object, so raycasting from the feet always hits the terrain. This is probably causing the confusion in the next part :

So let's look at this portion :

   Physics.Raycast(transform.position,transform.forward,hit);
   Debug.Log(hit.collider.tag);
   //if(hit.transform !=null)  // No need, all GO have Transform
   //{
   Debug.Log("HitPlayer");
       Debug.Log(hit.collider.tag); // What is the tag it hits?
   if(hit.collider.tag == "Player" || hit.collider.tag == "Vehicle")
   {
       Debug.Log("tagrecieved");
       Network.Destroy(hit.transform.gameObject);
       Debug.Log("Destroyed");
   }
   //}

How you commented out :

 //if(hit.transform !=null)  // No need, all GO have Transform

while all gos have a transform, this is to check if you actually hit anything! Again, if your always hitting terrain, then the ray origin is probably at the feet.

Finally, your raycast has no distance parameter, so is only checking a distance of 1 unit. If the origin was not at the feet, I doubt you would hit anything, hence the need to check if(hit.transform !=null)

Debug statements are good, but you can take it one step further to visualize the raycast with a Debug.DrawLine, untested example :

 // distance for ray to be cast
 var rayDistance : float = 10;
 
 // do raycast and populate hit information
 Physics.Raycast( transform.position, transform.forward, hit, rayDistance );
 
 // check if an object has been hit
 if ( hit.transform != null )
 {
     Debug.Log( "Hit " + hit.collider.tag ); // What is the tag it hits?
     
     // draw debug line to show raycast
     Debug.DrawLine( transform.position, hit.point );
 
     if ( hit.collider.tag == "Player" || hit.collider.tag == "Vehicle" )
     {
         Debug.Log("tagrecieved");
         Network.Destroy(hit.transform.gameObject);
         Debug.Log("Destroyed");
     }
 }
 // ray did not hit anything, show ray
 else
 {
     Debug.DrawRay( transform.position, transform.forward * rayDistance );
 }

@alucardj loved the first sentence, man. But why is such a detailed response posted as a comment, I think this should be an answer.

Hold on I realise this is duplicate http://answers.unity3d.com/questions/984982/player-tag-not-being-detected-by-unity.html.

The removal of the transform check was from me since I would rather use the return value of the Raycast to know if it hits and then the transform check is pointless.

      "Finally, your raycast has no distance parameter, so is only checking a distance of 1 unit. "

The default is infinity. So no value is like shooting real far. But the main issue here is that he seems to be shooting from within the player while trying to get the tag of the player which won't happen since Raycast ignore the collider if it starts from inside of it.

@Harshad$$anonymous$$ thanks, I didn't think the comment answered the question, more a guide on debugging raycasts.

@fafase thanks for pointing that out, not sure where my brain went on that. Regarding the player, you are correct with the the player not being hit by a raycast originating within the player collider; however this looks like it is meant for network, so the op is trying to hit the instance of another player on the network, not themselves.

@Ian $$anonymous$$cCleary not sure why you deleted your original post, it would've been easier just building from the advice you had received there than posting a new question.

Just some followup on debug lines, you may want to add colour and duration to the debug lines so they are more visible, eg :

 Debug.DrawLine( transform.position, hit.point, Color.red, 0.25f ); // renders the line for 0.25 seconds
 Debug.DrawRay( transform.position, transform.forward * rayDistance, Color.yellow, 0.25f ); // renders the line for 0.25 seconds

you can also toggle the gizmos tab in the game view window to see the lines in the game view window :

Scripting References :

http://docs.unity3d.com/ScriptReference/Debug.DrawLine.html

http://docs.unity3d.com/ScriptReference/Debug.DrawRay.html

http://docs.unity3d.com/ScriptReference/Physics.Raycast.html