Pacman ghost script crashing unity (newbie C# help)

Unity Engine
1

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 :frowning:

public class Ghost : MonoBehaviour {

	public GameObject ThePac;
	public float ghostSpeed = 1.5f;
	private int XorY = 1;
	private int colCount = 0;

	// Use this for initialization
	void Start () {
		MoveY();
	}
	
	// Update is called once per frame
	void Update () {
	}

	void MoveY()
	{
		Vector2 newPosition = transform.position;
		XorY = 1;
		if (ThePac.transform.position.y > transform.position.y)
		{
			while (colCount == 0)
			{
			newPosition.y += (1 * ghostSpeed * Time.deltaTime);
			transform.position = newPosition;
			}
		}
		if (ThePac.transform.position.y < transform.position.y)
		{
			while (colCount == 0)
			{
			newPosition.y += (-1 * ghostSpeed * Time.deltaTime);
			transform.position = newPosition;
			}
		}
	}

	void MoveX()
	{
		Vector2 newPosition = transform.position;
		XorY = 0;
		if (ThePac.transform.position.x > transform.position.x)
		{
			while (colCount == 0)
			{
			newPosition.x += (1 * ghostSpeed * Time.deltaTime);
			transform.position = newPosition;
			}
		}
		if (ThePac.transform.position.x < transform.position.x)
		{
			while (colCount == 0)
			{
			newPosition.x += (-1 * ghostSpeed * Time.deltaTime);
			transform.position = newPosition;
			}
		}
	}

	void OnCollisionEnter2D (Collision2D col)
	{
		colCount = 0;
		if (XorY == 1)
			MoveX ();
		if (XorY == 0)
			MoveY ();
	}

	void OnCollisionExit2D (Collision2D col)
	{
		colCount = 1;
	}
}
2

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.

3

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.