java 利用继承、接口、多态、抽象方法写的石头剪刀布游戏

石头剪刀布游戏——Java

package com.lhy.oop3;
import java.util.Scanner;
import static com.bjsxt.oop3.TestCycles.getRandomNumber;
import static com.bjsxt.oop3.TestCycles.judgeGesture;
public class TestCycles {
    public static void main(String[] args) {
        test();
    }
    public static void test(){
        Mygame mygame = new Mygame();
        mygame.initGame();
        mygame.startGame();
    }
    public static int getRandomNumber(int min,int max){
        return (int)(Math.random() * (max-min)+min);
    }
    public static String judgeGesture(int num){
        String gesture = "" ;
        if(num == Constant.ROCK){
            gesture = Constant.getRock(Constant.ROCK);
        }
        if(num == Constant.SCISSORS){
            gesture = Constant.getScissors(Constant.SCISSORS);
        }
        if(num ==Constant.CLOTH){
            gesture =Constant.getCloth(Constant.CLOTH);
        }
        return gesture;
    }
}
//常量类
class Constant{
    public static final int ROCK = 0;
    public static final int SCISSORS = 1;
    public static final int CLOTH = 2;
    int[] arr = {ROCK,SCISSORS,CLOTH};
    public static final int GANADOS  = 3 ;
    public Constant() {
    }
    public static String getRock(int rock) {
        String gesture = " ";
        if(rock == Constant.ROCK){
             gesture = "石头";
        }
        return gesture;
    }
    public static String getScissors(int scissors) {
        String gesture = " ";
        if(scissors == Constant.SCISSORS){
            gesture = "剪刀";
        }
        return gesture;
    }
    public static String getCloth(int cloth) {
        String gesture = " ";
        if(cloth == Constant.CLOTH){
            gesture = "布";
        }
        return gesture;

    }
    public int getGanados() {
        return GANADOS;
    }

}
//玩家及电脑的父类
abstract class GamePlayer{
    String name;//名字
    int value;//选择的数值
    int wincount;//胜利场数
    //获得数值的方法
    abstract int getInputValue();
}
//玩家类
class Player extends GamePlayer{
    int playerWincount = 0;
    public Player() {
    }
    public Player(String name) {
         this.name = name;
    }
    //玩家对获取分数的方法进行重写
    @Override
    int getInputValue() {
        Scanner scanner = new Scanner(System.in);
        int playervalue = scanner.nextInt();
        return playervalue;
    }

    @Override
    public String toString() {
        return "Player{" +
                "name='" + name + '\'' +
                '}';
    }
}
class Computer extends GamePlayer{
    int computerWincount = 0;
    public Computer() {
    }
    public Computer(String name) {
        this.name = name;
    }
    //电脑对获取分数的方法进行重写
    @Override
    int getInputValue() {
        int computervalue = getRandomNumber(0,3);
        return computervalue;
    }

    @Override
    public String toString() {
        return "Computer{" +
                "name='" + name + '\'' +
                '}';
    }
}
interface GameComparator{
    //如果 playerValue 胜 computerValue 返回 1，相同返回 0 否则返回 -1
    int compare(int playerValue, int computerValue);
}
class GameComparatorImpl implements GameComparator{
    @Override
    public int compare(int playerValue, int computerValue) {
        int result = 3;
        if((playerValue == Constant.ROCK&&computerValue == Constant.SCISSORS) ||(playerValue == Constant.SCISSORS &&computerValue == Constant.CLOTH) ||(playerValue == Constant.CLOTH &&computerValue == Constant.ROCK)){
            result = 1;
        }
        if((playerValue == Constant.ROCK&&computerValue == Constant.CLOTH) ||(playerValue == Constant.SCISSORS &&computerValue == Constant.ROCK) ||(playerValue == Constant.CLOTH &&computerValue == Constant.SCISSORS)){
            result = -1;
        }
        if((playerValue == Constant.ROCK&&computerValue == Constant.ROCK) ||(playerValue == Constant.SCISSORS &&computerValue == Constant.SCISSORS) ||(playerValue == Constant.CLOTH &&computerValue == Constant.CLOTH)){
            result = 0;
        }
        return result;
    }
}
interface GameInterface{
    public abstract void initGame();
    public abstract void startGame();
    public abstract void endGame();
}
class Mygame implements GameInterface{
    int playerWincount = 0;
    int computerWincount = 0;
    int time = 0;
    //判断胜利场数的方法
     int judgeWincout( int result) {
        if (result == 1) {
            System.out.println("您获胜了");
            playerWincount++;
        }
        if (result == -1) {
            System.out.println("您输了");
            computerWincount++;
        }
        if(result == 0){
            System.out.println("平局");
            time++;
        }
         System.out.println(toString());//输出结果
        return result;
    }
    @Override
    public String toString() {
        return "共计玩"+(playerWincount+computerWincount+time)+"场"+
                "\n您的胜利场数为"+playerWincount+
                "\n电脑玩家的胜利场数为："+computerWincount+
                "\n平局场数为："+time;
    }
    @Override
    public void initGame() {
        System.out.println("---欢迎使用猜拳游戏----\n---(5局3胜制)---");
        GamePlayer player = new Player("小明");
        GamePlayer computer = new Computer("电脑玩家");
        System.out.println( player.toString());
        System.out.println(computer.toString());
    }
    @Override
    public void startGame() {
        Player player = new Player();
        Computer computer = new Computer();
        Scanner scanner = new Scanner(System.in);
        GameComparatorImpl gameComparator = new GameComparatorImpl();
        int a =0;
        int b = 0;
        while(true){
            System.out.println("请输入您要出的手势：0代表石头 1代表剪刀 2代表布");
            int playervalue= player.getInputValue();//玩家选择手势
            int computervalue = computer.getInputValue();//电脑选择手势
            System.out.println("您选择的手势是"+judgeGesture(playervalue)+
                    "\n电脑玩家选择的手势是"+judgeGesture(computervalue));
            a = gameComparator.compare(playervalue,computervalue);
            judgeWincout(a);//判断玩家和电脑的胜利场数
            if(playerWincount < Constant.GANADOS&&computerWincount < Constant.GANADOS){
            }else {
                endGame();
                break;
            }
            System.out.println("您是否继续游戏：按3结束,按其他任意数字继续");
            b = scanner.nextInt();
            if(b == 3){
                endGame();
                break;
            }
        }
    }
    @Override
    public void endGame() {
        System.out.println("游戏结束");
        return;
    }
}

```![游戏开始界面](https://img-blog.csdnimg.cn/20191016152040452.png)
![游戏运行结束界面](https://img-blog.csdnimg.cn/20191016151953252.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Byb3ZlbmNlX18=,size_16,color_FFFFFF,t_70)