package com.tarena.shoot;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.image.BufferedImage;import java.util.Arrays;import java.util.Random;import java.util.Timer;import java.util.TimerTask;import javax.imageio.ImageIO;import javax.swing.ImageIcon;import javax.swing.JFrame;import javax.swing.JPanel;public class ShootGame extends JPanel {public static final int WIDTH = 400; // 面板宽public static final int HEIGHT = 654; // 面板高/** 游戏的当前状态: START RUNNING PAUSE GAME_OVER */private int state;public static final int START = 0;public static final int RUNNING = 1;public static final int PAUSE = 2;public static final int GAME_OVER = 3;private int score = 0; // 得分private Timer timer; // 定时器private int intervel = 1000/100; // 时间间隔(毫秒)public static BufferedImage background;public static BufferedImage start;public static BufferedImage pause;public static BufferedImage gameover;public static BufferedImage bullet;public static BufferedImage airplane;public static BufferedImage[] airplaneEmber=new BufferedImage[4];public static BufferedImage bee;public static BufferedImage[] beeEmber=new BufferedImage[4];;public static BufferedImage hero0;public static BufferedImage hero1;public static BufferedImage[] heroEmber=new BufferedImage[4];;public static BufferedImage bigPlane;public static BufferedImage[] bigPlaneEmber=new BufferedImage[4];;private FlyingObject[] flyings = {}; // 敌机数组private Bullet[] bullets = {}; // 子弹数组private Hero hero = new Hero(); // 英雄机private Ember[] embers = {}; // 灰烬static {// 静态代码块try {background = ImageIO.read(ShootGame.class.getResource("background.png"));bigPlane = ImageIO.read(ShootGame.class.getResource("bigplane.png"));airplane = ImageIO.read(ShootGame.class.getResource("airplane.png"));bee = ImageIO.read(ShootGame.class.getResource("bee.png"));bullet = ImageIO.read(ShootGame.class.getResource("bullet.png"));hero0 = ImageIO.read(ShootGame.class.getResource("hero0.png"));hero1 = ImageIO.read(ShootGame.class.getResource("hero1.png"));pause = ImageIO.read(ShootGame.class.getResource("pause.png"));gameover = ImageIO.read(ShootGame.class.getResource("gameover.png"));start = ImageIO.read(ShootGame.class.getResource("start.png"));for(int i=0; i<4; i ){beeEmber[i] = ImageIO.read(ShootGame.class.getResource("bee_ember" i ".png"));airplaneEmber[i] = ImageIO.read(ShootGame.class.getResource("airplane_ember" i ".png"));bigPlaneEmber[i] = ImageIO.read(ShootGame.class.getResource("bigplane_ember" i ".png"));heroEmber[i] = ImageIO.read(ShootGame.class.getResource("hero_ember" i ".png"));}} catch (Exception e) {e.printStackTrace();}}@Overridepublic void paint(Graphics g) {g.drawImage(background, 0, 0, null); // 画背景图paintEmber(g);paintHero(g); // 画英雄机paintBullets(g); // 画子弹paintFlyingObjects(g); // 画飞行物paintScore(g); // 画分数paintState(g); // 画游戏状态}/** 画英雄机 */public void paintHero(Graphics g) {g.drawImage(hero.getImage(), hero.getX(), hero.getY(), null);}public void paintEmber(Graphics g) {for (int i = 0; i < embers.length; i ) {Ember e = embers[i];g.drawImage(e.getImage(), e.getX(), e.getY(), null);}}/** 画子弹 */public void paintBullets(Graphics g) {for (int i = 0; i < bullets.length; i ) {Bullet b = bullets[i];if(! b.isBomb())g.drawImage(b.getImage(), b.getX() - b.getWidth() / 2, b.getY(),null);}}/** 画飞行物 */public void paintFlyingObjects(Graphics g) {for (int i = 0; i < flyings.length; i ) {FlyingObject f = flyings[i];g.drawImage(f.getImage(), f.getX(), f.getY(), null);}}/** 画分数 */public void paintScore(Graphics g) {int x = 10;int y = 25;Font font = new Font(Font.SANS_SERIF,Font.BOLD, 14);g.setColor(new Color(0x3A3B3B));g.setFont(font); // 设置字体g.drawString("SCORE:" score, x, y); // 画分数y =20;g.drawString("LIFE:" hero.getLife(), x, y);}/** 画游戏状态 */public void paintState(Graphics g) {switch (state) {case START:g.drawImage(start, 0, 0, null);break;case PAUSE:g.drawImage(pause, 0, 0, null);break;case GAME_OVER:g.drawImage(gameover, 0, 0, null);break;}}public static void main(String[] args) {JFrame frame = new JFrame("Shoot Game");ShootGame game = new ShootGame(); // 面板对象frame.add(game); // 将面板添加到JFrame中frame.setSize(WIDTH, HEIGHT); // 大小frame.setAlwaysOnTop(true); // 其总在最上frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 默认关闭操作frame.setIconImage(new ImageIcon("images/icon.jpg").getImage()); // 设置窗体的图标frame.setLocationRelativeTo(null); // 设置窗体初始位置frame.setVisible(true); // 尽快调用paintgame.action(); // 启动执行}public void action() { // 启动执行代码// 鼠标监听事件MouseAdapter l = new MouseAdapter() {@Overridepublic void mouseMoved(MouseEvent e) { // 鼠标移动if (state == RUNNING) { // 运行时移动英雄机int x = e.getX();int y = e.getY();hero.moveTo(x, y);}}@Overridepublic void mouseEntered(MouseEvent e) { // 鼠标进入if (state == PAUSE) { // 暂停时运行state = RUNNING;}}@Overridepublic void mouseExited(MouseEvent e) { // 鼠标退出if (state != GAME_OVER) {state = PAUSE; // 游戏未结束，则设置其为暂停}}@Overridepublic void mouseClicked(MouseEvent e) { // 鼠标点击switch (state) {case START:state = RUNNING;break;case GAME_OVER: // 游戏结束，清理现场flyings = new FlyingObject[0];bullets = new Bullet[0];hero = new Hero();score = 0;state = START;break;}}};this.addMouseListener(l); // 处理鼠标点击操作this.addMouseMotionListener(l); // 处理鼠标滑动操作timer = new Timer(); // 主流程控制timer.schedule(new TimerTask() {@Overridepublic void run() {if (state == RUNNING) {enterAction(); // 飞行物入场stepAction(); // 走一步shootAction(); // 射击bangAction(); // 子弹打飞行物outOfBoundsAction(); // 删除越界飞行物及子弹checkGameOverAction(); // 检查游戏结束emberAction();}repaint(); // 重绘，调用paint()方法}}, intervel, intervel);}private void emberAction() {Ember[] live = new Ember[embers.length];int index = 0;for (int i = 0; i < embers.length; i ) {Ember ember = embers[i];if(! ember.burnDown()){live[index ]=ember;}}embers = Arrays.copyOf(live, index);}int flyEnteredIndex = 0; // 飞行物入场计数/** 飞行物入场 */public void enterAction() {flyEnteredIndex ;if (flyEnteredIndex % 40 == 0) { // 300毫秒--10*30FlyingObject obj = nextOne(); // 随机生成一个飞行物flyings = Arrays.copyOf(flyings, flyings.length 1);flyings[flyings.length - 1] = obj;}}public void stepAction() {/** 飞行物走一步 */for (int i = 0; i < flyings.length; i ) { // 飞行物走一步FlyingObject f = flyings[i];f.step();}/** 子弹走一步 */for (int i = 0; i < bullets.length; i ) {Bullet b = bullets[i];b.step();}hero.step();}int shootIndex = 0; // 射击计数/** 射击 */public void shootAction() {shootIndex ;if (shootIndex % 30 == 0) { // 100毫秒发一颗Bullet[] bs = hero.shoot(); // 英雄打出子弹bullets = Arrays.copyOf(bullets, bullets.length bs.length); // 扩容System.arraycopy(bs, 0, bullets, bullets.length - bs.length,bs.length); // 追加数组}}/** 子弹与飞行物碰撞检测 */public void bangAction() {for (int i = 0; i < bullets.length; i ) { // 遍历所有子弹Bullet b = bullets[i];bang(b);}}/** 删除越界飞行物及子弹 */public void outOfBoundsAction() {int index = 0;FlyingObject[] flyingLives = new FlyingObject[flyings.length]; // 活着的飞行物for (int i = 0; i < flyings.length; i ) {FlyingObject f = flyings[i];if (!f.outOfBounds()) {flyingLives[index ] = f; // 不越界的留着}}flyings = Arrays.copyOf(flyingLives, index); // 将不越界的飞行物都留着index = 0; // 重置为0Bullet[] bulletLives = new Bullet[bullets.length];for (int i = 0; i < bullets.length; i ) {Bullet b = bullets[i];if (!b.outOfBounds()) {bulletLives[index ] = b;}}bullets = Arrays.copyOf(bulletLives, index); // 将不越界的子弹留着}/** 检查游戏结束 */public void checkGameOverAction() {if (isGameOver()) {state = GAME_OVER; // 改变状态}}/** 检查游戏是否结束 */public boolean isGameOver() {int index = -1;for (int i = 0; i < flyings.length; i ) {FlyingObject obj = flyings[i];if (hero.hit(obj)) { // 检查英雄机与飞行物是否碰撞hero.subtractLife();hero.setDoubleFire(0);index = i;Ember ember = new Ember(hero);embers = Arrays.copyOf(embers, embers.length 1);embers[embers.length-1]=ember;}}if(index!=-1){FlyingObject t = flyings[index];flyings[index] = flyings[flyings.length-1];flyings[flyings.length-1] = t;flyings = Arrays.copyOf(flyings, flyings.length-1);Ember ember = new Ember(t);embers = Arrays.copyOf(embers, embers.length 1);embers[embers.length-1]=ember;}return hero.getLife() <= 0;}/** 子弹和飞行物之间的碰撞检查 */public void bang(Bullet bullet) {int index = -1; // 击中的飞行物索引for (int i = 0; i < flyings.length; i ) {FlyingObject obj = flyings[i];if (obj.shootBy(bullet)) { // 判断是否击中index = i; // 记录被击中的飞行物的索引break;}}if (index != -1) { // 有击中的飞行物FlyingObject one = flyings[index]; // 记录被击中的飞行物FlyingObject temp = flyings[index]; // 被击中的飞行物与最后一个飞行物交换flyings[index] = flyings[flyings.length - 1];flyings[flyings.length - 1] = temp;flyings = Arrays.copyOf(flyings, flyings.length - 1); // 删除最后一个飞行物(即被击中的)// 检查one的类型 如果是敌人, 就算分if (one instanceof Enemy) { // 检查类型，是敌人，则加分Enemy e = (Enemy) one; // 强制类型转换score = e.getScore(); // 加分} if (one instanceof Award) { // 若为奖励，设置奖励Award a = (Award) one;int type = a.getType(); // 获取奖励类型switch (type) {case Award.DOUBLE_FIRE:hero.addDoubleFire(); // 设置双倍火力break;case Award.LIFE:hero.addLife(); // 设置加命break;}}//飞行物变成灰烬Ember ember = new Ember(one);embers = Arrays.copyOf(embers, embers.length 1);embers[embers.length-1]=ember;}}/** * 随机生成飞行物 * * @return 飞行物对象 */public static FlyingObject nextOne() {Random random = new Random();int type = random.nextInt(20); // [0,4)if (type==0) {return new Bee();}else if(type<=2){return new BigPlane();}else{return new Airplane();}}}
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