I'm trying to make a script that when I use a melee attack, the player moves towards the enemy unless he is within a specific distance to him, and the enemy is also pushed back, regardless of position.

I got it to work.. the only problem is that it seems that because I have a nested while loop... It seems to have the first frame lag for a noticeable split-second before working as it should.

This lag is a problem, since I can't have the game lag every time the player wants to melee. Is there any reason besides a slow cpu that this would happen, I really doubt my computer wouldn't be able to handle this, and is there any way I can make it more efficient?

var cooldownTimer: float = 10.0; //This will be changed in inspector
var countDown : float = 0.0;
var playerAttackRange : int = 5;
var particle : GameObject;
var player : GameObject;
var particleClone = particle;
var slashDistance : float = 1.0;
var moveDirection;
var shouldMove : boolean = true;
var controller : CharacterController;
private var currentPosition : Vector3;
var swordSlash : AudioClip;
var hit : RaycastHit;
var hitLoc;
var impact;
var attackBool : boolean = false;

function Start () {

}

function Update () {

    currentPosition = transform.position;

    moveDirection = player.transform.forward;

    if(Input.GetButton("Fire1") &&  Time.time > countDown){

       attack();

    }

}


function attack(){
  if(AbilitySystem.fireElement.equippedFire == true) {
    audio.PlayOneShot(swordSlash);
    countDown = Time.time + cooldownTimer;
    var fwd = transform.forward; // <- easier way to get the forward direction
    if(Physics.Raycast(transform.position, fwd, hit, playerAttackRange)){
      Debug.Log("Melee has struck " + hit.collider.name + " at a range of " + playerAttackRange +"!!!!!!!!!!!");
      if(hit.collider.tag == "Enemy") {
        hit.collider.GetComponent(EnemyHealth).enemyCurrentHealth -= AbilitySystem.fireElement.swordDamage;
        particleClone = Instantiate(particle, hit.transform.position, hit.transform.rotation);
        Destroy(particleClone, 1);
        hitLoc = hit.point;
        // calculate the direction to push the target:
        impact = -hit.normal;
        impact.y = 0; // keep it horizontal
        impact.z = 0; // keep it 2d
        impact = impact.normalized;
        // apply the movement during duration seconds:
        var duration = 0.25;
        var durationTwo = duration;    
        while (duration > 0){
            Debug.Log("While loop one started");
            while (durationTwo > 0){
               Debug.Log("While loop two started");
               if(Vector3.Distance(transform.position, hitLoc) > slashDistance){ 
                 player.transform.Translate(impact.x * Time.deltaTime * 4, impact.y, impact.z, Space.World);
                 Debug.Log("Player transformed");
               }
               durationTwo -= Time.deltaTime;
               Debug.Log("DurationTwo = " + durationTwo);
            }     
            hit.transform.Translate(impact * Time.deltaTime * 4, Space.World);  
            Debug.Log("Enemy transformed");      
            duration -= Time.deltaTime; // count time
            Debug.Log("Duration = " + duration);
            Debug.Log("yielding");
            yield; // return to loop next frame
        }
      }
    }
  }
}