Pacman ghost script crashing unity (newbie C# help)

So I've been trying to learn to use Unity and C#, but I can't understand why this crashes. Can anyone find the glaringly obvious error and tell me what I'm doing wrong? I thought for sure this would work

Code (csharp):

1. public class Ghost : MonoBehaviour {
2.  
3.     public GameObject ThePac;
4.     public float ghostSpeed = 1.5f;
5.     private int XorY = 1;
6.     private int colCount = 0;
7.  
8.     // Use this for initialization
9.     void Start () {
10.         MoveY();
11.     }
12.    
13.     // Update is called once per frame
14.     void Update () {
15.     }
16.  
17.     void MoveY()
18.     {
19.         Vector2 newPosition = transform.position;
20.         XorY = 1;
21.         if (ThePac.transform.position.y > transform.position.y)
22.         {
23.             while (colCount == 0)
24.             {
25.             newPosition.y += (1 * ghostSpeed * Time.deltaTime);
26.             transform.position = newPosition;
27.             }
28.         }
29.         if (ThePac.transform.position.y < transform.position.y)
30.         {
31.             while (colCount == 0)
32.             {
33.             newPosition.y += (-1 * ghostSpeed * Time.deltaTime);
34.             transform.position = newPosition;
35.             }
36.         }
37.     }
38.  
39.     void MoveX()
40.     {
41.         Vector2 newPosition = transform.position;
42.         XorY = 0;
43.         if (ThePac.transform.position.x > transform.position.x)
44.         {
45.             while (colCount == 0)
46.             {
47.             newPosition.x += (1 * ghostSpeed * Time.deltaTime);
48.             transform.position = newPosition;
49.             }
50.         }
51.         if (ThePac.transform.position.x < transform.position.x)
52.         {
53.             while (colCount == 0)
54.             {
55.             newPosition.x += (-1 * ghostSpeed * Time.deltaTime);
56.             transform.position = newPosition;
57.             }
58.         }
59.     }
60.  
61.     void OnCollisionEnter2D (Collision2D col)
62.     {
63.         colCount = 0;
64.         if (XorY == 1)
65.             MoveX ();
66.         if (XorY == 0)
67.             MoveY ();
68.     }
69.  
70.     void OnCollisionExit2D (Collision2D col)
71.     {
72.         colCount = 1;
73.     }
74. }

 

Just a quick guess, but i think it's because you're having loops in there which are never ending, at least this script doesn't allow them to.

 

Hm, I'm not sure how to do this sort of behavior without looping though. Just to simplify things starting off, I was trying to make it to go along a y-axis path until it hits a wall, then go along a x-axis path until it hits a wall, etc.

Guess I'll scrap this and try to think of something a little less infinite. Also, I have a feeling I should be using raycasts to change direction instead of waiting until I run into a wall.