JavaSE——集合框架二（2/6）-综合案例-斗地主游戏（做牌、洗牌、发牌、排序、看牌）

需求与分析

具体实现

牌类定义

房间类定义

初步测试

启动游戏

运行案例

需求与分析

需求

总共有54张牌
点数："3","4","5","6","7","8","9","10","J","Q","K","A","2"
花色："♠","♥","♣","♦"
大小王："👲","🃏"
斗地主：发出51张牌，剩下3张作为底牌

分析实现

在启动游戏房间的时候，应该提前准备好54张牌
接着，需要完成洗牌、发牌、对牌排序、看牌

具体实现

牌类定义

package user.Collection;

public class Card {
    private String number;
    private String color;
    //每张牌是存在牌值大小的
    private int size;       //0 1 2 ...

    public Card() {
    }

    public Card(String number, String color, int size) {
        this.number = number;
        this.color = color;
        this.size = size;
    }

    public String getNumber() {
        return number;
    }

    public void setNumber(String number) {
        this.number = number;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public int getSize() {
        return size;
    }

    public void setSize(int size) {
        this.size = size;
    }

    @Override
    public String toString() {
        return number + color;
    }
}

房间类定义

package user.Collection;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Room {
    //首先必须有一副牌
    private List<Card> allCards = new ArrayList<>();

    public Room(){
        //1.做出54张牌，存入到集合allCards
        //a.所有牌的点数
        String[] numbers = {"3","4","5","6","7","8","9","10","J","Q","K","A","2"};
        //b.所有牌的花色
        String[] colors = {"♠","♥","♣","♦"};
        int size = 0;       //表示每张牌的牌值大小
        //c.遍历点数，再遍历花色，组织牌
        for(String number:numbers){
            //number = "3"
            size++; //1 2 3 ......
            for(String color:colors){
                //得到一张牌
                Card d = new Card(number,color,size);
                allCards.add(d);    //存入牌库
            }
        }

        //单独存入大小王
        Card d1 = new Card("","🃏",++size);  //小王
        Card d2 = new Card("","👲",++size); //大王
        Collections.addAll(allCards,d1,d2);
    }
}

初步测试

在Room类中加一下输出语句：（已重写Card类的toString方法）

在主程序中运行：

运行结果：

启动游戏

在Room类中编写启动游戏的方法，再调用

    public void start() {
        //1.洗牌
        Collections.shuffle(allCards);
        System.out.println("洗牌后：" + allCards);

        //2.发牌，发给三个玩家 还是使用List集合
        List<Card> MegMarch = new ArrayList<>();
        List<Card> JoMarch = new ArrayList<>();
        List<Card> BethMarch = new ArrayList<>();

        //正式发牌给这三个玩家，依次发出51张牌，剩余三张作为底牌
        for(int i = 0;i < allCards.size();i++){
            Card c = allCards.get(i);
            //判断发牌给谁
            if(i % 3 == 0){
                //发牌给梅格
                MegMarch.add(c);
            }else if(i % 3 == 1){
                //发牌给乔
                JoMarch.add(c);
            }else if(i % 3 == 2){
                //发牌给贝丝
                BethMarch.add(c);
            }
        }
        
        //3.对三个玩家的牌进行排序
        sortCards(MegMarch);
        sortCards(JoMarch);
        sortCards(BethMarch);

        //4.看牌
        System.out.println("梅格 ：" + MegMarch);
        System.out.println("乔   ：" + JoMarch);
        System.out.println("贝丝 ：" + BethMarch);
        List<Card> lastThreeCards = allCards.subList(allCards.size() - 3,allCards.size());
        System.out.println("底牌 ：" + lastThreeCards);
        //假设乔抢到了地主
        JoMarch.addAll(lastThreeCards);
        sortCards(JoMarch);
        System.out.println("乔抢到地主后：" + JoMarch);
    }

    private void sortCards(List<Card> cards) {
        Collections.sort(cards, new Comparator<Card>() {
            @Override
            public int compare(Card o1, Card o2) {
                return o2.getSize() - o1.getSize(); //降序排序
            }
        });
    }