C#泛型单例模式工具类

泛型单例模式工具类Singleton.cs

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

public class Singleton<T> : MonoBehaviour where T : Singleton<T>
{
    private static T instance;

    public static T Instance
    {
        get { return instance; }
    }

    protected virtual void Awake()
    {
        if (instance != null)
            Destroy(gameObject);
        else
            instance = (T) this;
    }

    // 当前单例类型是否生成
    public static bool IsInitialized
    {
        get { return instance != null; }
    }

    // 一个场景中有多个单例模式的话需要销毁
    protected virtual void OnDestroy()
    {
        if (instance == this)
            instance = null;
    }
}