import System.Collections.Generic;
           
       var targets : List.<Transform>;
       var selectedTarget : Transform;
           
       function Start () {
           targets = new List.<Transform>();
           selectedTarget = null;
           AddAllEnemies();
       }
           
       function AddAllEnemies()
       {
           var go : GameObject[] = GameObject.FindGameObjectsWithTag("2");
           for(var enemy : GameObject in go)
           {
               AddTarget(enemy.transform);
           }
       }
           
       function AddTarget(enemy : Transform)
       {
           targets.Add(enemy);
       }        
       function SortByDistance()
       {
          var targets =  new Array();
           targets.Sort(Comparison);
       }
function Comparison(a : GameObject, b : GameObject)
{
var a_dist = Vector3.Distance(transform.position, a.transform.position);
var b_dist = Vector3.Distance(transform.position, b.transform.position);
return a_dist.CompareTo(b_dist);
}    
           
       function Update () {
            selectedTarget = targets[0];
       }