C# 设计模式之【备忘录模式】

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.Text;

namespace 备忘录模式
{
    class Program
    {
        static void Main(string[] args)
        {

            //大战Boss前
            GameRole lixiaoyao = new GameRole();
            lixiaoyao.GetInitState();
            lixiaoyao.StateDisplay();

            //保存进度
            RoleStateCaretaker stateAdmin = new RoleStateCaretaker();
            stateAdmin.Memento = lixiaoyao.SaveState();

            //大战Boss时，损耗严重
            lixiaoyao.Fight();
            lixiaoyao.StateDisplay();

            //恢复之前状态
            lixiaoyao.RecoveryState(stateAdmin.Memento);

            lixiaoyao.StateDisplay();


            Console.Read();

        }
    }

    class GameRole
    {
        //生命力
        private int vit;
        public int Vitality
        {
            get { return vit; }
            set { vit = value; }
        }

        //攻击力
        private int atk;
        public int Attack
        {
            get { return atk; }
            set { atk = value; }
        }

        //防御力
        private int def;
        public int Defense
        {
            get { return def; }
            set { def = value; }
        }

        //状态显示
        public void StateDisplay()
        {
            Console.WriteLine("角色当前状态：");
            Console.WriteLine("体力：{0}", this.vit);
            Console.WriteLine("攻击力：{0}", this.atk);
            Console.WriteLine("防御力：{0}", this.def);
            Console.WriteLine("");
        }

        //保存角色状态
        public RoleStateMemento SaveState()
        {
            return (new RoleStateMemento(vit, atk, def));
        }

        //恢复角色状态
        public void RecoveryState(RoleStateMemento memento)
        {
            this.vit = memento.Vitality;
            this.atk = memento.Attack;
            this.def = memento.Defense;
        }


        //获得初始状态
        public void GetInitState()
        {
            this.vit = 100;
            this.atk = 100;
            this.def = 100;
        }

        //战斗
        public void Fight()
        {
            this.vit = 0;
            this.atk = 0;
            this.def = 0;
        }
    }

    //角色状态存储箱
    class RoleStateMemento
    {
        private int vit;
        private int atk;
        private int def;

        public RoleStateMemento(int vit, int atk, int def)
        {
            this.vit = vit;
            this.atk = atk;
            this.def = def;
        }

        //生命力
        public int Vitality
        {
            get { return vit; }
            set { vit = value; }
        }

        //攻击力
        public int Attack
        {
            get { return atk; }
            set { atk = value; }
        }

        //防御力
        public int Defense
        {
            get { return def; }
            set { def = value; }
        }
    }

    //角色状态管理者
    class RoleStateCaretaker
    {
        private RoleStateMemento memento;

        public RoleStateMemento Memento
        {
            get { return memento; }
            set { memento = value; }
        }
    }


}