raycast cooler

I made a Ai shoot script that works with raycasting but the problem is that the raycast goes non stop and kills me in a second, and i'm trying to find a way to smoth it or at least 1 shot of raycast per second. here is my ai shoot script(feel free to copy if you want i don't mind).

  var player : Transform;
 var safeDist : float = 15;
 var currentDist : float;
 var shooting : boolean = false;
 
 var canShoot: boolean = false;
  var BloodSplat : GameObject;
   var sparkEffect : GameObject;
 
 var gunTip : Transform;
 
 var range : float = 1000;
 var force: float = 1000;
 var shotDelay : float = 0.5;
 
 var Damage : int = 1;
 var Bullet : GameObject;
 
 
  var ShootTimer : float = 1;
  var ShootCooler : float = 10;
 
 function Update () {
 
 
  
     currentDist = Vector3.Distance(transform.position, player.position);
  
     if(currentDist < safeDist){
     //transform.LookAt(player);
     if(!shooting){
     
       shootStuff();
     
      
       Instantiate(Bullet, gunTip.transform.position, gunTip.transform.rotation);//this just for decoration
     }
  
 }
 }
 
 
 
 
  
 function shootStuff(){ // the part that shoot
  
       var hit : RaycastHit;
 
         var DirectionRay = transform.TransformDirection(Vector3.forward);
 
         Debug.DrawRay(transform.position , DirectionRay * range , Color.yellow);
 
      if(Physics.Raycast(transform.position , DirectionRay , hit , range)){
      var particleClone1 = Instantiate( sparkEffect , hit.point, Quaternion.LookRotation(hit.normal));
          Destroy(particleClone1.gameObject, 0.2);
                       
       if ( hit.rigidbody){
           
           hit.rigidbody.AddForceAtPosition( DirectionRay * force , hit.point);
          
           hit.collider.SendMessageUpwards ("HeroeHit" , Damage , SendMessageOptions.DontRequireReceiver);
          if( hit.transform.tag == "Player" ) {
           var particleClone = Instantiate( BloodSplat, hit.point, Quaternion.LookRotation(hit.normal));
          Destroy(particleClone.gameObject, 0.2);
          
         }
         }
         }
         }