XiuXianProject/GameClient/Assets/Game/CSShare/GFG/Launcher/Singleton.cs

#if !NOT_UNITY
using UnityEngine;

public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
{
    protected static T _instance;

    private static bool missed = false;
    public static T instance
    {
        get
        {
            if (!_instance)// && (!Application.isPlaying || !missed))
            {
                _instance = Object.FindObjectOfType<T>(true);
                if (!_instance)
                {
                    missed = true;
                }
            }
            return _instance;
        }
    }

    protected virtual void Awake()
    {
        _instance = this as T;
        missed = false;
    }

    private void OnDestroy()
    {
        _instance = null;
        missed = false;
    }
}

#endif