1。定义

代理模式：为其他对象提供一种代理以控制对这个对象的访问

2，UML图

代理模式UML图

3，代理模式基本代码

namespace ProxyMode
{
    public abstract class Subject
    {
        public abstract void Request();
    }

    public class RealSubject : Subject
    {
        public override void Request()
        {
            Debug.Log("RealSubject  Behaviour");
        }
    }

    public class Proxy : Subject
    {
        private RealSubject RealSubject;

        public Proxy()
        {
            RealSubject = new RealSubject();
        }

        public override void Request()
        {
            if (RealSubject == null)
                RealSubject = new RealSubject();

            RealSubject.Request();
        }
    }
}

4，代理模式的简单的应用

namespace ProxyMosdeExample
{
    interface IGiveGift
    {
        void GiveChoco();
        void GiveFlower();
        void GiveOther();
    }

    public class Pursuit : IGiveGift
    {
        private SchoolGirl SchoolGirl;
        public Pursuit(SchoolGirl schoolGirl)
        {
            this.SchoolGirl = schoolGirl;
        }

        public void GiveChoco()
        {
          
        }

        public void GiveFlower()
        {
        }

        public void GiveOther()
        {
        }
    }

    public class Proxy : IGiveGift
    {
        private Pursuit Pursuit;
        public Proxy(SchoolGirl schoolGirl)
        {
            Pursuit = new Pursuit(schoolGirl);
        }

        public void GiveChoco()
        {
            Pursuit.GiveChoco();
        }

        public void GiveFlower()
        {
            Pursuit.GiveFlower();
        }

        public void GiveOther()
        {
            Pursuit.GiveOther();
        }
    }


    public class SchoolGirl
    {
        public string Name;
    }
}

// 使用
  private void Start()
    {
        SchoolGirl schoolGirl = new SchoolGirl()
        {
            Name = "lili"
        };

        Proxy proxy = new Proxy(schoolGirl);
        proxy.GiveOther();
        proxy.GiveFlower();
        proxy.GiveChoco();
    }