java面向对象初学者练习小游戏.zip

package cn.tedu.submarine; import javax.swing.JFrame; import javax.swing.JPanel; import java.util.Arrays; import java.awt.Graphics; import java.util.Random; import java.util.Timer; import java.util.TimerTask; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; /*整个游戏世界*/ public class World extends JPanel{ public static final int WIDTH=641; public static final int HEIGHT=479; public static final int RUNNING=0;//运行 public static final int PAUSE=1; //暂停 public static final int GAME_OVER=2;//游戏结束 private int state=RUNNING; private Battleship ship=new Battleship(); private SeaObject[] submarines={}; private Mine[] mines={}; private Bomb[] bombs={}; /**生成潜艇对象*/ private SeaObject nextsubmarine(){ Random rand=new Random(); int type=rand.nextInt(20); if (type<10){ return new ObserveSubmarine(); }else if (type<16){ return new TorpedoSubmarine(); }else{ return new MineSubmarine(); } } //潜艇入场计数 private int subEnterIndex=0; private void submarineEnterAction(){ subEnterIndex++; if (subEnterIndex%10==0){ SeaObject obj=nextsubmarine(); submarines=Arrays.copyOf(submarines,submarines.length+1); submarines[submarines.length-1]=obj; } } private int minEnterIndex=0; //水雷入场 private void mineEnterAction(){ minEnterIndex++; if (minEnterIndex%40==0){ for (int i=0;i<submarines.length;i++){ if (submarines[i] instanceof MineSubmarine){ MineSubmarine ms=(MineSubmarine) submarines[i]; Mine obj = ms.shootMine(); mines=Arrays.copyOf(mines,mines.length+1); mines[mines.length-1]=obj; } } } } private void moveAction(){ for (int i=0;i<submarines.length;i++){ submarines[i].move(); } for (int i=0;i<mines.length;i++){ mines[i].move(); } for (int i=0;i<bombs.length;i++){ bombs[i].move(); } } private void outOfBoundsAction(){ for (int i=0;i<submarines.length;i++){ if (submarines[i].isOutOfBounds() || submarines[i].isDead()){ submarines[i]=submarines[submarines.length-1]; submarines=Arrays.copyOf(submarines,submarines.length-1); } } for (int i=0;i<mines.length;i++){ if (mines[i].isOutOfBounds() || mines[i].isDead()){ mines[i]=mines[mines.length-1]; mines=Arrays.copyOf(mines,mines.length-1); } } for (int i=0;i<bombs.length;i++){ if (bombs[i].isOutOfBounds() || bombs[i].isDead()){ bombs[i]=bombs[bombs.length-1]; bombs=Arrays.copyOf(bombs,bombs.length-1); } } } private int score=0; /** 炸弹与潜艇的碰撞*/ private void bombBangAction(){ for (int i=0;i<bombs.length;i++){ Bomb b=bombs[i]; for (int j=0;j<submarines.length;j++){ SeaObject s=submarines[j]; if (b.isLive()&&s.isLive()&&s.isHit(b)){ s.goDead(); b.goDead(); //的东西 if (s instanceof EnemyScore){ EnemyScore es=(EnemyScore) s; score+= es.getScore(); } if (s instanceof EnemyLife){ EnemyLife el=(EnemyLife) s; int num=el.getLife(); ship.addLife(num); } } } } } public void mineBangAction(){ for (int i=0;i<mines.length;i++){ Mine m=mines[i]; if (m.isLive()&& ship.isLive()&&m.isHit(ship)){ m.goDead(); ship.subtractLife(); } } } /**检测游戏结束*/ private void checkGameOverAction(){ if (ship.getLife()<=0){ state=GAME_OVER; } } /**启动程序执行*/ private void action(){ KeyAdapter k=new KeyAdapter() { @Override /** 重写keyReleased按键抬起事件*/ public void keyReleased(KeyEvent e) { if (e.getKeyCode()==KeyEvent.VK_P){ if (state==RUNNING){ state=PAUSE; }else if (state==PAUSE){ state=RUNNING; } } if (state==RUNNING){ if (e.getKeyCode()==KeyEvent.VK_SPACE){ Bomb obj= ship.shootBomb(); bombs=Arrays.copyOf(bombs,bombs.length+1); bombs[bombs.length-1]=obj; } if (e.getKeyCode()==KeyEvent.VK_LEFT){ ship.moveLeft(); } if (e.getKeyCode()==KeyEvent.VK_RIGHT){ ship.moveRight(); } } } }; //键盘侦听器 this.addKeyListener(k); //添加侦听 Timer timer=new Timer();//定时器对象 int interval=10;//间隔10毫秒 timer.schedule(new TimerTask() { @Override public void run() { if (state==RUNNING){ submarineEnterAction(); mineEnterAction(); moveAction(); bombBangAction(); mineBangAction(); outOfBoundsAction(); checkGameOverAction(); repaint();//重画 } } }, interval, interval);//定时日程表 } /** 重写paint()画 g:系统自带画笔*/ public void paint(Graphics g){ Images.sea.paintIcon(null,g,0,0); ship.paintImage(g); for (int i=0;i< submarines.length;i++){ submarines[i].paintImage(g); } for (int i=0;i< mines.length;i++){ mines[i].paintImage(g); } for (int i=0;i<bombs.length;i++){ bombs[i].paintImage(g); } g.drawString("SCORE"+score,200,50); g.drawString("LIFE"+ship.getLife(),400,50); if (state==GAME_OVER){ Images.gameover.paintIcon(null,g,0,0); } } public static void main(String[] args) { JFrame frame=new JFrame(); World world=new World(); world.setFocusable(true); frame.add(world); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(WIDTH+16,HEIGHT+39); frame.setLocationRelativeTo(null); frame.setVisible(true); world.action();//启动程序执行 } }