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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