Disable shooting whilst reloading?

At the moment when I reload my gun I am still able to shoot. How can I change my script so that when I am reloading, shooting is disabled until it has finished? This is my script for shooting raycasts, hope someone can help me out here.

 var amountOfShots = 8;
 var reloadTime = 1.5;
 
 function Update (){
 if(Input.GetButtonDown("Fire1")){
     Shoot();
     }
     
 if(Input.GetKeyDown("r")){
     Reload();
     }
 }
 
 function Reload (){
 yield WaitForSeconds(reloadTime);
 amountOfShots = 8;
 }
 
 var shootSound : AudioClip;
 var bloodPrefab : Transform;
 var sparksPrefab : Transform;
 var hit : RaycastHit;
 var range = 500;
 var otherScript : DamageReciever;
 
 function Shoot (){
 
         if(amountOfShots > 0){
         amountOfShots--;
         if(shootSound){
         audio.PlayOneShot(shootSound);
     }
 if(Physics.Raycast(transform.position, transform.forward, hit, range)){
     var rot = Quaternion.FromToRotation(Vector3.up, hit.normal);
 
     if(hit.collider.tag == "Enemy"){
     
         if(bloodPrefab){
             Instantiate(bloodPrefab, hit.point, rot);
         }
         
             var otherScript : DamageReciever;
             otherScript = hit.collider.gameObject.GetComponent(DamageReciever);
             otherScript.Damage(5);
             
         }else{
         if(sparksPrefab){
             Instantiate(sparksPrefab, hit.point, rot);
             }
         }
     }
 }
 }