//SeekSteer.js

   var waypoints : Transform[];
   var waypointRadius : float  = 1.5;
   var damping : float = 0.1;
   var loop : boolean = false;
   var speed : float = 2.0;
   var faceHeading : boolean = true;

   private var targetHeading : Vector3;
   private var currentHeading : Vector3;
   private var targetwaypoint : int;
   private var xform : Transform;
   private var useRigidbody : boolean;
   private var rigidmember : Rigidbody;


   // Use this for initialization
  function Start() {
       xform = transform;
       currentHeading = xform.forward;
       if(waypoints.Length<=0)
       {
           Debug.Log("No waypoints on "+name);
           enabled = false;
       }
       targetwaypoint = 0;
       if(rigidbody!=null)
       {
           useRigidbody = true;
           rigidmember = rigidbody;
       }
       else
       {
           useRigidbody = false;
       }
   }


   // calculates a new heading
   function FixedUpdate() {
       targetHeading = waypoints[targetwaypoint].position - xform.position;

       currentHeading = Vector3.Lerp(currentHeading,targetHeading,damping*Time.deltaTime);
   }

   // moves us along current heading
   function Update(){

       if(useRigidbody)
           rigidmember.velocity = currentHeading * speed;
       else
           xform.position +=currentHeading * Time.deltaTime * speed;
       if(faceHeading)
           xform.LookAt(xform.position+currentHeading);

       if(Vector3.Distance(xform.position,waypoints[targetwaypoint].position)<=waypointRadius)
       {
           targetwaypoint++;
           if(targetwaypoint>=waypoints.Length)
           {
               targetwaypoint = 0;
               if(!loop)
                   enabled = false;
           }
       }
   }


   // draws red line from waypoint to waypoint
   function OnDrawGizmos(){

       Gizmos.color = Color.red;
       for(var i : int = 0; i< waypoints.Length;i++)
       {
          var pos : Vector3 = waypoints[i].position;
           if(i>0)
           {
               var prev : Vector3 = waypoints[i-1].position;
               Gizmos.DrawLine(prev,pos);
           }
       }
   }