Java学习记录1击沉战舰游戏

最近在学习java，力求能够独立编写好《Head First》中的每个小项目，关于击沉战舰小游戏算是《Head First》里比较典型的应用案例吧，这里我没有用内本书里提供的Helper类，类似Helper类的方法是自己写的，纯粹是自己的想法和设计，但最后的执行效果非常棒，甚至要比用helper的效果更好，我觉得既然是学习，能够把一些东西变成自己的（自己独立写出功能）肯定最好啦~~

话不多说，上CODE，该上的注释都上了，共同学习哦：）

package ArraylistApplyForSinkBoatGame;
import java.util.ArrayList;

public class Boat {

    ArrayList boatLocation=new ArrayList();
    String boatName;

    public void setBoatName(String name){
        boatName=name;
    }
    public String getBoatName(){
        return boatName;
    }
    public ArrayList getBoatString(){
        return boatLocation;
    }
    public void addLocation(String loc){
        boatLocation.add(loc);
    }

    void removeLocation(String loc,int index){
        boatLocation.remove(index);
    }
    boolean arrylislIsEmpty(){
        if(boatLocation.isEmpty())
            return true;
        return false;
    }



}

package ArraylistApplyForSinkBoatGame;

public class Game {

String[][] sea2d={
                    {"A1","A2","A3","A4","A5","A6","A7","A8","A9","A10"},
                    {"B1","B2","B3","B4","B5","B6","B7","B8","B9","B10"},
                    {"C1","C2","C3","C4","C5","C6","C7","C8","C9","C10"},
                    {"D1","D2","D3","D4","D5","D6","D7","D8","D9","D10"},
                    {"E1","E2","E3","E4","E5","E6","E7","E8","E9","E10"},
                    {"F1","F2","F3","F4","F5","F6","F7","F8","F9","F10"},
                    {"G1","G2","G3","G4","G5","G6","G7","G8","G9","G10"},
                    {"H1","H2","H3","H4","H5","H6","H7","H8","H9","H10"},
                    {"I1","I2","I3","I4","I5","I6","I7","I8","I9","I10"},
                    {"J1","J2","J3","J4","J5","J6","J7","J8","J9","J10"},
                 };


public String xyIntoString(int x,int y){                
    return sea2d[x][y];     
}

}

package ArraylistApplyForSinkBoatGame;

import java.util.ArrayList;
import java.util.Scanner;

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

            int  i=0,rad,randomX,randomY,tempX=0,tempY=0,tryTimes=0;
            String str=null;
            boolean ber=false,berHit;           

            ArrayList boats=new ArrayList();//存储boat对象的Arraylist
            Scanner scan=new Scanner(System.in);//输入对象

            Game myGame=new Game();
            //分别创建三个船对象，名字分别为boatone、boattwo、boatthree
            Boat boat1=new Boat();                      
            boat1.setBoatName("boatone");
            boats.add(boat1);   

            Boat boat2=new Boat();          
            boat2.setBoatName("boattwo");
            boats.add(boat2);   

            Boat boat3=new Boat();
            boat3.setBoatName("boatthree");
            boats.add(boat3);

            Object o=new Object();//用于拿出来Arraylist中的某个对象

            //产生船所在的随机位置
            for(Boat bo:boats){                                                 
                    randomX=(int)(Math.random()*10);
                    randomY=(int)(Math.random()*10);
                    tempX=randomX+3;
                    tempY=randomY+3;
                    while(tempX>10||tempY>10){//用循环筛去计算机随机产生的船首位置+3后(船长度为3，加三后为船尾)溢出数组的随机数，这里数组最大值为10
                        randomX=(int)(Math.random()*10);
                        randomY=(int)(Math.random()*10);
                        tempX=randomX+3;
                        tempY=randomY+3;
                    }       
                    rad=(int)Math.random()*10;//随机一个数，以此设置船占三个位置的方向（上下或左右）
                    if(rad%2==0){
                         bo.addLocation(myGame.xyIntoString(randomX, randomY));//产生的随机数即为二维数组中的行列号，按照该行列号将Game类中字符数组对应位置元素添加至Boat类中String类型的Arrayli中
                         bo.addLocation(myGame.xyIntoString(randomX+1, randomY));   
                         bo.addLocation(myGame.xyIntoString(randomX+2, randomY)); 
                        if(!bo.arrylislIsEmpty()){//打印随机产生的船位置，下同
                            System.out.println(bo.boatName+"in sight"); 
                            for(i=0;i<3;i++){
                                o=bo.boatLocation.get(i);
                                System.out.println(o);
                            }
                         }                   
                    }
                    else{
                         bo.addLocation(myGame.xyIntoString(randomX, randomY));
                         bo.addLocation(myGame.xyIntoString(randomX, randomY+1));   
                         bo.addLocation(myGame.xyIntoString(randomX, randomY+2));  
                         if(!bo.arrylislIsEmpty()){//同上:)
                                System.out.println(bo.boatName+"in sight"); 
                                for(i=0;i<3;i++){
                                    o=bo.boatLocation.get(i);
                                    System.out.println(o);
                                }
                             }      
                    }                                                                 
            }//end

            System.out.println("\n :) Ready for the Game,Let's do it!!\n");//准备开始游戏
            //依据输入击沉船           
            while(!boats.isEmpty()){
                berHit=true;//用于标记击中与否
                System.out.println("input your attack:)\n");
                tryTimes++;//记录尝试次数
                str=scan.nextLine();//用户输入打击目标

                for(Boat bot:boats){//遍历存储Boat对象的ArrayList              
                    for(String st:bot.getBoatString()){ //遍历存储Boat对象的ArrayList中的，每个存储String类型对象的Arraylist               
                        if(st.equals(str)){
                            System.out.println("You have hit "+bot.boatName+"!!");
                            bot.getBoatString().remove(st); //击中后将boat中的击中位置删去
                            if(bot.getBoatString().isEmpty()){
                                System.out.println("OH GOD!You have sunk "+bot.boatName+"!!\nLet's sink next boat!\n");
                                boats.remove(bot);//从存储Boat对象的Arraylist中，删去某个被三个位置都击中的船对象
                            }
                            ber=true;
                            berHit=false;
                            break;
                        }

                    }
                    if(ber){//若击中一只船，直接跳出两层循环
                        ber=false;
                        break;
                    }               
                }                                               
                   if(berHit){//未击中提示
                       System.out.println("Good hit,but..you missed (T^T)\nCome on! try again! :) ");
                   }
            }
            //游戏结束
            System.out.println("After "+tryTimes+" times hits\nI can't believe it...\n OMG!!YOU HAVE WON ↖(^ω^)↗!!!!");         
            scan.close();           
        }//main()                           
    }