MonoSingleton

using UnityEngine;

public abstract class MonoSingleton : MonoBehaviour where T : MonoSingleton
{
    private static T m_Instance = null;

    public static T Instance
    {
        get
        {
            if (m_Instance == null)
            {
                m_Instance = GameObject.FindObjectOfType(typeof(T)) as T;

				if (m_Instance == null)
				{
					//Debug.LogError("No instance of " + typeof(T).ToString());
					Debug.Log("No instance of " + typeof(T).ToString());
				}
				else
				{
					m_Instance.Init();
				}
            }
            return m_Instance;
        }
    }

    private void Awake()
    {
        if (m_Instance == null)
        {
            m_Instance = this as T;

            m_Instance.Init();
        }
    }

    public virtual void Init() { } // 초기화를 상속을 통해 구현

    private void OnApplicationQuit()
    {
        m_Instance = null;
    }

    void OnEnable()
    {
        m_Instance = null;
    }
}