笔记 Unity 两种单例

最新推荐文章于 2024-08-06 20:58:11 发布

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最新推荐文章于 2024-08-06 20:58:11 发布

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分类专栏： C# unity

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本文介绍Unity中使用抽象类DataCenter实现泛型单例模式的方法，通过GameObject实例化并管理游戏数据，同时提供了双检查加锁的线程安全单例模式实现。

public abstract class DataCenter<T> : MonoBehaviour where T : MonoBehaviour
{

    private static string rootName = "DataCenter";
    private static GameObject gameDataCenter;
    private static T instance;
    public static T Instance
    {
        get
        {
            if (gameDataCenter == null)
            {
                gameDataCenter = GameObject.Find(rootName);
                if (gameDataCenter == null) Debug.Log("please create a gameobject named " + rootName);
            }
            if (instance == null)
            {
                instance = gameDataCenter.GetComponent<T>();
                if (instance == null) instance = gameDataCenter.AddComponent<T>();
            }
            return instance;
        }
    }
}

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

public class GameDataCenter : DataCenter<GameDataCenter>
{
    public RoboticArmRotate RoboticArmRotate;
    public UIButtonCenter UIButtonCenter;
    public GrabObject GrabObject;
    public LaserPointer_Chh LaserPointerChh;
    public GameCenterManager GameCenterManager;
    public Animator WheelAnimator;
    public InstantiationObject InstantiationObject;
    public bool IsGrab=false;
    void Start()
    {

    }
    void Update()
    {

    }
}

第二种防止多个线程创建用了双If+lock

 public class Singleton
    {
        private static Singleton _Instance = null;
        private static object Instance_Lock = new object();
        public static Singleton Instance()
        {
            if (_Instance == null) //双if +lock
            {
                lock (Instance_Lock )
                {
                    if (_Instance == null)
                    {
                        _Instance  = new Singleton();
                    }
                }
            }
            return _Instance;
        }
    }