So i'm not the most experienced coder, but i try. I recently started a zombie FPS, i've got all the A.I. worked out and everything, but my one issue is I can shoot while reloading. I dont know how to add delay and i was wondering if anyone could tell me how/where to put in my script. Here it is:

pragma strict

 var Range : float = 1000;
 var Force : float = 1000;
 
 var hitMark : GameObject;
 
 var texta : GUITexture;
 var four : Texture;
 var three : Texture;
 var two : Texture;
 var one : Texture;
 var zero : Texture;
 var five : Texture;
 
 var bullets : int = 5;
 
 function Start () {
 
 }
 
 function Update () {
 
 }
     
     if(Input.GetKeyDown(KeyCode.R)){
 
 
     if(bullets == 5){ texta.guiTexture.texture = five; }
     
             else if(bullets == 0){ GameObject.Find("Gun").animation.Play("reload"); bullets = 5; }
             else if(bullets == 4){ texta.guiTexture.texture = four; }
             else if(bullets == 3){ texta.guiTexture.texture = three; }
             else if(bullets == 2){ texta.guiTexture.texture = two; }
             else if(bullets == 1){ texta.guiTexture.texture = one; }
                 
         
         var hit : RaycastHit;
                 
         var direction : Vector3  = transform.TransformDirection(Vector3.forward);
          
         Debug.DrawRay(transform.position , direction * Range , Color.blue);
                 
             if(Input.GetMouseButtonDown(0)){
             
             bullets--;
                 
                 if(Physics.Raycast(transform.position , direction , hit, Range)){
                 
                             var hitRotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
                     
                             if(hit.collider.gameObject.tag == "zombie"){
                 
                                 //hit.rigidbody.AddForceAtPosition( direction * 100 , hit.point);
                                 //hit.collider.gameObject.animation.Play("die");
                                 Instantiate(hitMark);
                                 hit.collider.gameObject.SendMessage("ApplyDamage", 45);
 
     }
 }
                                 
                             }
                 
                 
                         
 }