Informer.cs

using UnityEngine;
using System.Collections;

public class Informer : MonoBehaviour {

	// Use this for initialization
	void Start () {
		var parent = this.transform.parent;
		while (parent != null) {
			var controller = parent.GetComponent<Controller> ();
			if (controller != null) {
				controller.RegisterInformer (this);
				break;
			}
			parent = parent.transform.parent;
		}
	}
}