First person sword fighting

There doesn't seem to be a step by step tutorial on this can you show me one?

My problem is that I can get my character to hold the sword, but I cant figure out how to make him slash and do damage while still getting the movement controls to work correctly this is the script im using:

 var swordPoints : Transform[];
 var swingPower : int;
 var showGizmosInEditor : boolean = false;
 
 
 function Update () 
 {
     var hit : RaycastHit;
     for(i = 0; i < swordPoints.length; i++)
     {
         if(Physics.Linecast(transform.position, swordPoints[i].position, hit))
         {
             Hit(swordPoints[i], hit);
         }
     }
 }


 function Hit(i : Transform, hit : RaycastHit)
 {
     if(hit.collider.rigidbody)
     {
         hit.collider.rigidbody.AddExplosionForce(swingPower, i.transform.position, 1.0, 3.0);
     }
     if(hit.collider.tag == "Enemy")
     {
         hit.collider.gameObject.SendMessageUpwards("ApplyDamage", swingPower, SendMessageOptions.DontRequireReceiver);
     }
 }


 function OnDrawGizmosSelected()
 {
     Gizmos.color = Color.blue;
     if(showGizmosInEditor)
     {
         if(swordPoints.length != 0)
         {
             for(i = 0; i < swordPoints.length; i++)
             {
                 if(swordPoints[i] != null)
                 {
                     Gizmos.DrawLine(transform.position, swordPoints[i].position);
                 }
             }
         }
     }
 }