Observerパターン練習

using UnityEngine;
using UnityEngine.UI;
using System;

//使い方
public class TestScript : MonoBehaviour
{
	public View view;
	Data<int> score = new Data<int> ();

	void Start ()
	{
		//viewに観察対象を渡す
		view.Init (score);
		//dataを更新する
		score.ChangeValue (100);
	}
}

//観察者のinterface
public interface IObserver<T>
{
	void Update (T value);
}

//観察対象者のinterface
public interface IObservable<T>
{
	void ChangeValue (T value);

	void AddObserver (IObserver<T> observer);
}

//観察対象の実装
public class Data<T> : IObservable<T>
{
	private T value;
	private IObserver<T> observer;

	public void ChangeValue (T value)
	{
		this.value = value;
		observer.Update (this.value);
	}

	public void AddObserver (IObserver<T> observer)
	{
		this.observer = observer;
	}
}

//観察者の実装
public class View : MonoBehaviour, IObserver<int>
{
	public Text scoreText;

	public void Init (Data<int> scoreData)
	{
		scoreData.AddObserver (this);
	}

	public void Update (int value)
	{
		scoreText.text = "Score:" + value;
	}
		
}