java类与对象案例之打字游戏

类与对象案例-童年回忆之打字游戏

一、玩家类
二、等级类
三、游戏类
四、等级地图
五、测试类

这次要做的案例是一个打字游戏的案例，相信大家小时候都玩过金山打字通的警察抓小偷和飞机大战，这次的案例是类似的简易版。

首先对于这个案例，我们要解决的是如何生成随机的字符串，如何判断生成的字符串和输入的字符串是否相等。

一、玩家类

package com.yc.oop6.hc0705;

public class Player {
 private int score; //积分
 private long startTime; //各级别的开始时间
 private long dis;   //每次闯关剩余时间
 private int levelNo; //级别号码
 public int getScore() {
 return score;
 }
 public void setScore(int score) {
 this.score = score;
 }
 public long getStartTime() {
 return startTime;
 }
 public void setStartTime(long startTime) {
 this.startTime = startTime;
 }
 public int getLevelNo() {
 return levelNo;
 }
 public void setLevelNo(int levelNo) {
 this.levelNo = levelNo;
 }
 public Player(int score, long startTime, int levelNo) {
 super();
 this.score = score;
 this.startTime = startTime;
 this.levelNo = levelNo;
 }
 public Player() {
 super();
 }
 public long getDis() {
 return dis;
 }
 public void setDis(long dis) {
 this.dis = dis;
 }

}

二、等级类

package com.yc.oop6.hc0705;

public class Level {
 private int levelNo; //第几关
 private int strLength; //字符串长度
 private int strTime; //需要输入的次数
 private int timeLimit; //时间限制
 private int score; //答对一次获得的积分
 public int getLevelNo() {
 return levelNo;
 }
 public int getStrLength() {
 return strLength;
 }
 public int getStrTime() {
 return strTime;
 }
 public int getTimeLimit() {
 return timeLimit;
 }
 public int getScore() {
 return score;
 }
 public Level(int levelNo, int strLength, int strTime, int timeLimit, int score) {
 super();
 this.levelNo = levelNo;
 this.strLength = strLength;
 this.strTime = strTime;
 this.timeLimit = timeLimit;
 this.score = score;
 }
 public Level() {
 super();
 }

}

三、游戏类

package com.yc.oop6.hc0705;

import java.util.Random;
import java.util.Scanner;

public class Game {
 private Player player;
 private Random r = new Random();
 private Scanner sc = new Scanner(System.in) ;

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

 //开始游戏
 public void startGame() {
 System.out.println("游戏开始");

 //开始闯关
 for(int i = 0; i < Levels.ls.length; i++) {
 System.out.println("开始进入第" + (i+1) + "关");
 //每一关的开始在这里
 player.setLevelNo(player.getLevelNo() + 1);
 player.setStartTime(System.currentTimeMillis());

 //循环，这一关要输入多少次

 for(int j = 0 ; j < Levels.ls[player.getLevelNo() - 1].getStrTime() ; j++ ) {
 String out = printStr();
 System.out.println(out);
 String in = sc.nextLine();

 boolean flag = result(in, out);
 if(flag == false) {
  System.exit(1);;
 }

 }
 //每剩下1s 增加20分
 player.setScore(player.getScore() + (int)player.getDis() * 20);
 System.out.println("完成第" + (i+1) + "关，您现在的积分为：" + player.getScore());

 System.out.println("进入下一关");

 }
 }

 //随机字符串

 public String printStr( ) {

 String str = "";
 double rNum = 0;

 for(int i = 0; i < Levels.ls[player.getLevelNo()-1].getStrLength(); i++ ) {
 rNum = r.nextDouble();
 if(rNum < 0.3333) {
 str += (r.nextInt(9)+1);
 }else if(rNum < 0.6667){
 str += (char)(r.nextInt(26)+65);
 }else {
 str += (char)(r.nextInt(26)+97);
 }
 }
 return str;
 }

 //字符串对比

 public boolean result(String in, String out) {
 //字符串判断
 if(out.equals(in)) {
 //先获取一下当前的系统时间
 long endTimes = System.currentTimeMillis();
 long startTimes = player.getStartTime();
 //获得下一关的时间
 long dis = Levels.ls[player.getLevelNo() -1 ].getTimeLimit();

 if((endTimes - startTimes)/1000 > dis) {
 System.out.println("游戏超时，游戏结束，您的最终得分为：" + player.getScore());
 return false;
 }else {
 //输入正确，且没有超时
 //加积分
 int score = Levels.ls[player.getLevelNo()].getScore();
 player.setDis(dis - (endTimes - startTimes)/1000);
 player.setScore(player.getScore() + score );

 System.out.println("输入正确，您现在的积分为："+ player.getScore() +" ，这一关您还有： " + player.getDis() + " 秒钟");
 return true;
 }
 }else {
 System.out.println("输入错误，游戏结束，您的最终得分为：" + player.getScore());
 return false;//输入错误
 }

 }
}

四、等级地图

package com.yc.oop6.hc0705;

public class Levels {
 //定义一个静态的对象数组
 public static Level ls[] = new Level[7];

 static {
 ls[0] = new Level(1,2,5,20,10);
 ls[1] = new Level(2,3,5,18,20);
 ls[2] = new Level(3,4,4,16,30);
 ls[3] = new Level(4,5,4,15,40);
 ls[4] = new Level(5,6,4,15,50);
 ls[5] = new Level(6,7,3,15,60);
 ls[6] = new Level(7,8,3,15,70);
 }
}

五、测试类

package com.yc.oop6.hc0705;

public class Test {
 public static void main(String[] args) {

 Player p = new Player();
 Game g = new Game(p);
 g.startGame();

 }
}

详细的解释都在代码的注释里了，大家细品。

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