using System.Collections;
using System.Collections.Generic;
using UnityEngine;

// 创建 monobehaviour 单例
public class MonoSingleton<T> : MonoBehaviour where T : MonoSingleton<T>
{
    private static T _instance;
    public static T Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindFirstObjectByType<T>();
                if (_instance == null)
                {
                    // 创建一个空物体
                    GameObject go = new GameObject(typeof(T).Name);
                    DontDestroyOnLoad(go);
                    // 添加脚本
                    _instance = go.AddComponent<T>();
                }
            }
            return _instance;
        }
    }

    // 初始化
    protected virtual void Awake()
    {
        _instance = this as T;
        Init();
    }

    public virtual void Init()
    {

    }
}