class Program
{
    static void Main(string[] args)
    {
        XiangYu zhugong = new XiangYu();
        ShaShou daofushou = new DaoFuShou();
        ShaShou gongjianshou = new GongjianShou();

        //6 杀手订阅主公的摔杯事件
        zhugong.ShuaiBeiziEvent += new EventHandler<BeiziEventArgs>(daofushou.Action);
        zhugong.ShuaiBeiziEvent += gongjianshou.Action;

        //7 触发事件--- 谈判中(项羽可能随时会摔杯子)
        zhugong.Quanxiang();

        Console.ReadKey();
    }
}

//1 事件携带的附加信息
class BeiziEventArgs : EventArgs
{
    //杯子材质
    public string Metarials { get; set; }

    public BeiziEventArgs(string meterials)
    {
        this.Metarials = meterials;
    }
}

//2 定义事件拥有者
class XiangYu
{
    private EventHandler<BeiziEventArgs> eventHandler;

    //3 定义摔杯事件
    public event EventHandler<BeiziEventArgs> ShuaiBeiziEvent
    {
        add
        {
            eventHandler += value;
        }

        remove
        {
            eventHandler -= value;
        }
    }

    public void Quanxiang()
    {
        var ss = "你可以按下s来触发摔杯事件";
        Console.WriteLine(ss);
        do
        {
            Console.WriteLine("宴会进行中...");
            ss = Console.ReadLine();
        } while ("s"!=ss);
        Console.WriteLine("项羽怒了 抄起酒杯摔了下去");
        if (this.eventHandler!=null)
        {
            BeiziEventArgs attachinfo = new BeiziEventArgs("葡萄美酒夜光杯");
            eventHandler.Invoke(this, attachinfo);
        }
    }
}

//4 定义事件响应者
abstract class ShaShou
{
    //5 在响应者中 定义事件处理方法
    public abstract void Action(object sender, BeiziEventArgs e);
}

class DaoFuShou : ShaShou
{
    //刀斧手
    public override void Action(object sender, BeiziEventArgs e)
    {
        Console.WriteLine($"{e.Metarials}被摔了,进去拿人");
    }
}

class GongjianShou : ShaShou
{
    //弓箭手
    public override void Action(object sender, BeiziEventArgs e)
    {
        Console.WriteLine($"{e.Metarials}被摔了,准备放箭");
    }
}

class XiangYu
{
    //3 定义摔杯事件
    public event EventHandler<BeiziEventArgs> ShuaiBeiziEvent;

    public void Quanxiang()
    {
        var ss = "你可以按下s来触发摔杯事件";
        Console.WriteLine(ss);
        do
        {
            Console.WriteLine("宴会进行中...");
            ss = Console.ReadLine();
        } while ("s"!=ss);
        Console.WriteLine("项羽怒了 抄起酒杯摔了下去");
        if (this.ShuaiBeiziEvent!=null)
        {
            BeiziEventArgs attachinfo = new BeiziEventArgs("葡萄美酒夜光杯");
            ShuaiBeiziEvent.Invoke(this, attachinfo);
        }
    }
}