单例工具

最新推荐文章于 2023-02-07 15:51:17 发布

原创最新推荐文章于 2023-02-07 15:51:17 发布 · 190 阅读

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#C# #单例 #Unity

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单例是什么东西就不细说了，直接上代码吧。
分两个版本：

普通Class版


 public class Singleton<T> where T : class, new()
    {
        private static T s_instance;

        public static T Instance
        {
            get
            {
                if (Singleton<T>.s_instance == null)
                {
                    Singleton<T>.CreateInstance();
                }

                return Singleton<T>.s_instance;
            }
        }

        protected Singleton()
        {
        }

        public static void CreateInstance()
        {
            if (Singleton<T>.s_instance == null)
            {
                Singleton<T>.s_instance = new T();
            }
        }

        public static void DestroyInstance()
        {
            if (Singleton<T>.s_instance != null)
            {
                Singleton<T>.s_instance = (T) null;
            }
        }

        public static T GetInstance()
        {
            if (Singleton<T>.s_instance == null)
            {
                Singleton<T>.CreateInstance();
            }

            return Singleton<T>.s_instance;
        }

        public static bool HasInstance()
        {
            return Singleton<T>.s_instance != null;
        }

        public virtual void Init()
        {
        }

        public virtual void UnInit()
        {
        }
    }

MonoBehavior版

public class MonoSingleton<T> : MonoBehaviour where T:MonoBehaviour
    {
        private static T s_instance;

        public static T Instance
        {
            get
            {
                if (MonoSingleton<T>.s_instance == null)
                {
                    MonoSingleton<T>.CreateInstance();
                }

                return MonoSingleton<T>.s_instance;
            }
        }
        public static void CreateInstance()
        {
            if (MonoSingleton<T>.s_instance == null)
            {
                MonoSingleton<T>.s_instance = new GameObject().AddComponent<T>();
                DontDestroyOnLoad(MonoSingleton<T>.s_instance);
            }
        }

        public static void DestroyInstance()
        {
            if (MonoSingleton<T>.s_instance != null)
            {
                Object.Destroy(MonoSingleton<T>.s_instance);
                MonoSingleton<T>.s_instance = null;
            }
        }
    }