Actor.SetTarget C# (CSharp) Method

    private void SetTarget()
    {
        int temp = 0;
        do
        {
            path = control.Path(transform.position, m_target, zDiff);
            temp++;
        } while (path == null && temp < 5);
        nodeIndex = 0;
        onNode = true;
    }

 void Update()
 {
     if (user == null || user.Player == null)
     {
         return;
     }
     if (actors == null)
     {
         Object[] objects = GameObject.FindObjectsOfType(typeof(Actor));
         if (objects != null && objects.Length > 0)
         {
             actors = new List <Actor>();
             foreach (Object m in objects)
             {
                 actors.Add((Actor)m);
             }
         }
     }
     else
     {
         foreach (Actor m in actors)
         {
             if (m == user.Player)
             {
                 continue;
             }
             if (m.Distance(user.Player) < 5f)
             {
                 m.SetNameTagColor(Color.red);
             }
             else
             {
                 m.ResetNameTagColor();
             }
         }
     }
     if (Input.GetMouseButtonDown(0) || Input.GetMouseButtonDown(1))
     {
         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition); RaycastHit hit;
         if (Physics.Raycast(ray, out hit))
         {
             Actor actor = hit.transform.GetComponent <Actor>();
             if (actor != null && actor != user.Player && actor.Distance(user.Player) < 5f)
             {
                 if (Input.GetMouseButtonDown(0))
                 {
                     if (!(actor is Kart))
                     {
                         actor.SetTarget(actor.target == null ? user.Player : null, true);
                     }
                 }
                 else if (Input.GetMouseButtonDown(1))
                 {
                     actor.SetTarget(null);
                     user.Player.SetTarget(actor, false);
                     user.Player = actor;
                 }
             }
         }
     }
     if (Input.GetKey(KeyCode.Comma))
     {
         user.Player.AddUniformScale(-Time.deltaTime);
     }
     else if (Input.GetKey(KeyCode.Period))
     {
         user.Player.AddUniformScale(Time.deltaTime);
     }
     if (Input.GetKeyDown(KeyCode.N))
     {
         if (actors != null)
         {
             showNameTag = !showNameTag;
             foreach (Actor m in actors)
             {
                 m.showNameTag = showNameTag;
             }
         }
     }
     if (Input.GetKeyDown(KeyCode.F2))
     {
         AudioSource sound = User.Instance.GetComponent <AudioSource>();
         if (sound != null)
         {
             if (sound.isPlaying)
             {
                 sound.Stop();
             }
             else
             {
                 sound.Play();
             }
         }
     }
 }