Auto lock on target

Hello Unity3D i have a question about auto lock on target?Is there any tutorials on how to make my character auto lock on another character?for example im making a 3D fighting game and i want the characters to auto lock on the other characters so that when im fighting i dont have to manually lock on the opponent,its automatically targeted on that opponent?Does anyone know any tutorials on auto targeting or know codes for it on a website perhaps?

 

I think the best way to do that would be with transform.LookAt(). Create a variable for your target, and tell your camera to look at it when you are in range and a button is held down. Here is some sample code:

Code (csharp):

1.  
2. var target : Transform;
3. var distance;
4.  
5. function Update () {
6. distance = Vector3.Distance(transform.position, target.transform.position);
7. if(Input.GetMouseButton(1)) {
8.     if(distance < 30) {
9.         transform.LookAt(target);
10.         }
11.     }
12. }
13.  

Hope it works, good luck!