33.winform之实现剪刀石头布

效果

实现

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsFormsApp3 {
    class Player {

        public int ShowFist(string fist) {
            int num = 0;
            switch (fist) {
                case "石头":
                    num = 1;
                    break;
                case "剪刀":
                    num = 2;
                    break;
                case "布":
                    num = 3;
                    break;
            }
            return num;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsFormsApp3 {
    class Computer {

        /// <summary>
        /// 自动属性，存储电脑出的拳头
        /// </summary>
        public string Fist {
            get;
            set;
        }

        public int ShowFist() {
            Random r = new Random();
            int rNumber = r.Next(1, 4);
            switch (rNumber) {
                case 1:
                    this.Fist = "石头";
                    break;
                case 2:
                    this.Fist = "剪刀";
                    break;
                case 3:
                    this.Fist = "布";
                    break;

            }
            return rNumber;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsFormsApp3 {

    public enum Result {
        玩家赢,
        电脑赢,
        平手
    }

    class Referee {

        public static Result Judge(int playerNumber, int computerNumber) {
            if (playerNumber - computerNumber == -1 || playerNumber - computerNumber == 2) {
                return Result.玩家赢;
            } else if (playerNumber - computerNumber == 0) {
                return Result.平手;
            } else {
                return Result.电脑赢;
            }

        }

    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp3 {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private void btnStone_Click(object sender, EventArgs e) {
            string str = "石头";
            PlayGame(str);

        }
        
        private void PlayGame(string str) {
            lblPlayer.Text = str;

            //玩家出拳
            Player player = new Player();
            int playerNumber = player.ShowFist(str);

            //电脑出拳
            Computer computer = new Computer();
            int computerNumber = computer.ShowFist();
            lblComputer.Text = computer.Fist;

            //裁判
            Result result = Referee.Judge(playerNumber, computerNumber);
            lblReferee.Text = result.ToString();
        }

        private void btnCut_Click(object sender, EventArgs e) {
            string str = "剪刀";
            PlayGame(str);
        }

        private void btnNo_Click(object sender, EventArgs e) {
            string str = "布";
            PlayGame(str);
        }
    }
}

石头 1 剪刀 2 布 3

通过相减来判断输赢情况
玩家赢了： 1 2=-1 2 3=-1 3 1=2
平手： 相减 =0
另外一种情况 ：电脑赢了