java 第61节 石头剪刀布小游戏

Posted 2020-08-02 岑亮

2016-07-02

 

package com.java1995;

public class Player {
    // 封装
    private String name;// 玩家姓名
    private int score;// 积分

    // 构造器
    public Player(String name, int score) {
        super();
        this.name = name;
        this.score = score;
    }

    // 实现封装
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    // toString打印规则
    @Override
    public String toString() {
        // TODO Auto-generated method stub
        return this.getName() + ": " + this.getScore();
    }

}

 

package com.java1995;

import java.util.Scanner;

public class Game {

    private Player player;

    public Game(Player player) {
        this.player = player;
    }

    public void start() {
        System.out.println("开始游戏");
        System.out.println(player.getName() + "进入游戏，初始积分为：" + player.getScore());
        String[] arr = new String[] { "剪刀", "石头", "布" };
        Scanner sc = new Scanner(System.in);

        while (true) {
            System.out.println("请输入 剪刀、石头、布 其中之一，退出请输入exit");
            String s1 = sc.next();// 玩家的输入
            //输入错误的处理
            if (!filter(s1)) {
                System.out.println("您输入的命令有误，请重新输入");
                continue;
            }
            //游戏退出机制
            if (s1.equals("exit")) {
                break;
            }
            int count = (int) (Math.random() * 3);// 0.0-2.999 截断
            String s2 = arr[count];

            int flag = rule(s1, s2);
            System.out.println("您出的是:" + s1 + ",系统出的是：" + s2);
            if (flag > 0) {
                System.out.println("恭喜" + player.getName() + "赢了，奖励10积分");
                player.setScore(player.getScore() + 10);
            } else if (flag < 0) {
                System.out.println("对不起" + player.getName() + "输了，扣除10积分");
                player.setScore(player.getScore() - 10);
            } else {
                System.out.println("打平了");
            }
            System.out.println(player);
        }
        System.out.println(player.getName() + "退出了游戏，当前积分为" + player.getScore());
    }

    public boolean filter(String s) {
        if ("剪刀".equals(s) || "石头".equals(s) || "布".equals(s) || "exit".equals(s)) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * 游戏规则
     * 
     * @return
     */
    public int rule(String s1, String s2) {
        if (s1.equals(s2)) {
            return 0;
        }
        if (s1.equals("剪刀")) {
            if (s2.equals("石头")) {
                return -1;
            }
            if (s2.equals("布")) {
                return 1;
            }
        }
        if (s1.equals("石头")) {
            if (s2.equals("剪刀")) {
                return 1;
            }
            if (s2.equals("布")) {
                return -1;
            }
        }
        if (s1.equals("布")) {
            if (s2.equals("石头")) {
                return 1;
            }
            if (s2.equals("剪刀")) {
                return -1;
            }
        }

        return 0;
    }

}

 

package com.java1995;

public class Test {

    public static void main(String[] args) {
        Player p = new Player("李伟", 100);
        Game g = new Game(p);
        g.start();
    }

}

【参考资料】

[1] Java轻松入门经典教程【完整版】