Re-enabling Grid Move script after re-selection

Hello everyone!

I am having an issue re-enabling the grid move script after i have deselected and then re-selected the same object. Step by step, this is what happens

1. I select the object and my Grid Move script is enabled, which fires a while loop waiting for input from the player

2. I deselect the object and I can see via the console log that the second while loop stops, which is exactly what i want

3. I re-select the object, but the while loops do not fire back up again. I have the conditions of the while loop set as while(this.enabled && mp>0) Another problem i have is that it is subtracting one movement point (mp) when i deselect, even if i do not hit an arrow key, which i am guessing is happening because the entire while loop will fire, which ends in a mp-- command that will fire regardless.

here is my code:

 var walkSpeed : float = 1.0;
 var runSpeed : float = 2.0;
 var gridSize : int = 1;
 enum Orientation {Horizontal, Vertical}
 var gridOrientation = Orientation.Horizontal;
 var allowDiagonals = false;
 var correctDiagonalSpeed = true;
 private var input = Vector2.zero;
 var character: Character;
 var selected: boolean = false;//can be deleted when debug done
 var mp: int;
     
 function Start ()
 {
      character = GetComponentInChildren(Character);
      mp = character.getMovementPoints();
      var myTransform = transform;
      var startPosition : Vector3;
      var endPosition : Vector3;
      var t : float;
      var tx : float;
      var moveSpeed = walkSpeed;
      //if(this.enabled)
      //{
           while (this.enabled && mp > 0)
           { 
                Debug.Log("first while loop passes");
                while (this.enabled && input == Vector2.zero)
                {
                     Debug.Log("second while loop passes");
                     GetAxes();
                     tx = 0.0;
                     yield;
                }
                transform.forward = Vector3.Normalize(new 
                Vector3(Input.GetAxis("Horizontal"), 0f, Input.GetAxis("Vertical")));
                startPosition = myTransform.position;
                endPosition = gridOrientation == Orientation.Horizontal?
                Vector3(Mathf.Round(myTransform.position.x), 0.0, 
                Mathf.Round(myTransform.position.z)) +
                Vector3(System.Math.Sign(input.x)*gridSize, 0.0, 
                System.Math.Sign(input.y)*gridSize)
                :
                Vector3(Mathf.Round(myTransform.position.x), 
                Mathf.Round(myTransform.position.y), 0.0) +
                Vector3(System.Math.Sign(input.x)*gridSize, System.Math.Sign(input.y)      *gridSize, 0.0);
                t = tx;
                while (t < 1.0)
                {
                     Debug.Log("third while loop passes");
                   //moveSpeed = Input.GetButton("Run")? runSpeed : walkSpeed;
                     t += Time.deltaTime * (moveSpeed/gridSize) * 
                     (correctDiagonalSpeed && input.x != 0.0 && input.y != 0.0? .7071 : 1.0);
                     myTransform.position = Vector3.Lerp(startPosition, 
                     endPosition, t);
                     yield;
                }
                tx = t - 1.0; // Used to prevent slight visual hiccups on "grid lines" due to Time.deltaTime variance
                GetAxes();
              //added to subtract one movement from moved character
                yield;
           }
      //}
 mp--;
 } 
 
 function Update()
 {
     
 }
     
 function GetAxes ()
 {
      if(this.enabled)
      {
           input = Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));
           if (allowDiagonals)
           return;
           if (Mathf.Abs(input.x) > Mathf.Abs(input.y))
           {
                input.y = 0.0;
           }
           else
           {
                input.x = 0.0;
           }
      }
 }

While typing this out i realized it could be because there is no update function present, its all in a start function which i know is best for while loops. And im questioning if this entire deal would be solved if i stuck if(this.enabled) in the update function, but what would i call underneath? Can you call Start()?

Also, that will not fix my movement points issue (mp).

Any thoughts on how to fix that issue, and if there is a more efficient way of doing this I would love to know. I have racked my brain on this for a day and I'm fairly positive i just need to stick an if statement in update checking if enabled, but again not sure if i can call start from that.

Thanks for any help and advice you guys can give me! :-)