Unity3D 运行时非销毁单例 Singleton Mono

    public abstract class Singleton<T> : MonoBehaviour where T : Singleton<T>
    {
        protected static T s_instance = null;

        public static T Instance
        {
            get
            {
                return GetInstance();
            }
        }

        public virtual void Awake()
        {
            s_instance = this as T;
        }

        public static T GetInstance()
        {
            if (s_instance == null)
            {
                var name = typeof(T).Name;
                var obj = GameObject.Find(name);
                if (obj == null)
                {
                    obj = new GameObject(name);
                    DontDestroyOnLoad(obj);
                }
                s_instance = obj.GetComponent<T>();
                if (s_instance == null)
                {
                    s_instance = obj.AddComponent<T>();
                }
            }
            return s_instance;
        }
    }

public abstract class MgrBase<T> : Singleton<T> where T : Singleton<T>
{

}

public class SomeFunctionMgr : MgrBase<SomeFunctionMgr>
{

}