C#设计模式

分别是普通的单例类以及继承自MonoBehaviour的单例

public abstract class SingletonN<T> where T : class, new()
{
    private static T ins = null;
    private static readonly object locker = new object();
    public static T Ins
    {   
        get
        {
            if (ins == null)
            {
                lock (locker)
                {
                    if (ins == null)
                    {
                        ins = new T();
                    }
                }
            }
            return ins;
        }
    }
} 

public class SingletonM<T> : MonoBehaviour where T : SingletonM<T>
{
    private static T ins;
    public static T Ins
    {
        get
        {
            if (ins != null) return ins;

            ins = FindObjectOfType<T>();
            if (ins == null)
            {
                new GameObject("Singleton of " + typeof(T)).AddComponent<T>();
            }
            else ins.Ini();
            return ins;
        }
    }
    private void Awake()
    {
        ins = this as T;
        Ini();
    }
    protected virtual void Ini() { }
}

观察者模式, 待补充