Java实现飞机大战-连接数据库并把得分写入数据库

编写飞行物类

package com.tarena.shoot;
 
import java.awt.image.bufferedimage;
 
/**
 * 飞行物(敌机，蜜蜂，子弹，英雄机)
 */
public abstract class flyingobject {
	protected int x;
	protected int y;
	protected int width; 
	protected int height;
	protected bufferedimage image;
	protected bufferedimage[] ember;
 
	public int getx() {
		return x;
	}
 
	public void setx(int x) {
		this.x = x;
	}
 
	public int gety() {
		return y;
	}
 
	public void sety(int y) {
		this.y = y;
	}
 
	public int getwidth() {
		return width;
	}
 
	public void setwidth(int width) {
		this.width = width;
	}
 
	public int getheight() {
		return height;
	}
 
	public void setheight(int height) {
		this.height = height;
	}
 
	
	public bufferedimage getimage() {
		return image;
	}
 
	public void setimage(bufferedimage image) {
		this.image = image;
	}
 
	/**
	 * 检查是否出界
	 * @param width 边界宽
	 * @param height 边界高
	 * @return true 出界与否
	 */
	public abstract boolean outofbounds();
	
	/**
	 * 飞行物移动一步
	 */
	public abstract void step();
	
	/**
	 * 检查当前飞行物体是否被子弹(x,y)击(shoot)中，
	 * true表示击中，飞行物可以被击中
	 * @param bullet 子弹对象
	 * @return true表示被击中了
	 */
	public boolean shootby(bullet bullet){
		if(bullet.isbomb()){
			return false;
		}
		int x = bullet.x; //子弹横坐标
		int y = bullet.y; //子弹纵坐标
		boolean shoot = this.x<x && x<this.x+width && this.y<y && y<this.y+height;
		if(shoot){
			bullet.setbomb(true);
		}
		return shoot;
	}
 
}

编写飞机类

package com.tarena.shoot;
 
 
 
/**
 * 敌飞机: 是飞行物，也是敌人
 */
public class airplane extends flyingobject implements enemy {
 
	int speed = 2; //移动步骤
	
	public airplane(){
		this.image = shootgame.airplane;
		this.ember = shootgame.airplaneember;
		width = image.getwidth();
		height = image.getheight();
		y = -height;   
		x = (int)(math.random()*(shootgame.width - width));
	}
 
	
	@override
	public int getscore() { //获取分数
		return 5;
	}
 
	@override
	public 	boolean outofbounds() { //越界处理
		return y>shootgame.height;
	}
 
	@override
	public void step() { //移动
		y += speed;
	}
 
}
 

编写奖励接口

package com.tarena.shoot;
/**
 * 奖励
 */
public interface award {
	int double_fire = 0; //双倍火力
	int life = 1;  //1条命
	/** 获得奖励类型(上面的0或1) */
	int gettype();
}

编写蜜蜂类

package com.tarena.shoot;
 
import java.util.random;
 
public class bee extends flyingobject implements award{
	private int xspeed = 1;
	private int yspeed = 2;
	private int awardtype;
	
	public bee(){
		this.image = shootgame.bee;
		this.ember = shootgame.beeember;
		width = image.getwidth();
		height = image.getheight();
		y = -height;
		random rand = new random();
		x = rand.nextint(shootgame.width - width);
		awardtype = rand.nextint(2);  //初始化时给奖励
	}
	
	public int gettype(){
		return awardtype;
	}
 
	@override
	public boolean outofbounds() {
		return y>shootgame.height;
	}
 
	@override
	public void step() {   //可斜飞
		x += xspeed;
		y += yspeed;
		if(x > shootgame.width-width){
			xspeed = -1;
		}
		if(x < 0){
			xspeed = 1;
		}
	}
}

编写大飞机类

package com.tarena.shoot;
 
import java.util.random;
 
public class bigplane extends flyingobject 
	implements enemy, award{
	private int xspeed=1;
	private int yspeed=1;
	
	private int life;
	private int awardtype;
 
	public bigplane() {
		life = 4;
		this.image = shootgame.bigplane;
		this.ember = shootgame.bigplaneember;
		width = image.getwidth();
		height = image.getheight();
		y = -height;    
		random rand = new random();
		x = rand.nextint(shootgame.width - width);
		awardtype = rand.nextint(2);
	}
	
	public int gettype() {
		return awardtype;
	}
 
	@override
	public int getscore() {
		return 50;
	}
 
	@override
	public boolean outofbounds() {
		return false;
	}
 
	
//	@override
//	public bufferedimage getimage() {
//		graphics g = image.getgraphics();
//		g.setcolor(color.white);
//		g.fillrect(0, 0, 40, 30);
//		g.setcolor(color.black);
//		g.drawstring("l:"+life, 10, 20);
//		return image;
//	}
	
	public enemybullet[] shoot() { // 发射子弹
		int xstep = width / 4; // 子弹步分为飞机宽度4半
		int ystep = 20;
		enemybullet[] bullets2 = new enemybullet[1];
		bullets2[0] = new enemybullet(x + 2 * xstep, y - ystep); 
		return bullets2;
		}
	
	@override
	public void step() {  //移动
		x += xspeed;
		y += yspeed;
		if(x > shootgame.width-width){
			xspeed = -1;
		}
		if(x < 0){
			xspeed = 1;
		}
	}
	
	public boolean shootby(bullet bullet) {
		if(super.shootby(bullet)){
			life--;
		}
		return life==0;
	}
}

编写子弹类

package com.tarena.shoot;
 
 
/**
 * 子弹类
 */
public class bullet extends flyingobject {
	private int speed = 3; //移动的速度
	private boolean bomb;
	public bullet(int x,int y){
		this.x = x;
		this.y = y;
		this.image = shootgame.bullet;
	}
	
	public void setbomb(boolean bomb) {
		this.bomb = bomb;
	}
	
	public boolean isbomb() {
		return bomb;
	}
 
	@override
	public void step(){  //移动方法
		y-=speed;
	}
 
	@override
	public boolean outofbounds() {
		return y<-height;
	}
 
}

编写飞机爆炸效果

package com.tarena.shoot;
 
import java.awt.image.bufferedimage;
 
/**
 * 灰烬 飞机被打掉以后的残影
 * @author robin
 */
public class ember {
	private bufferedimage[] images={};
	private int index;
	private int i;
	private bufferedimage image;
	private int intevel = 10;
	private int x,y;
	public ember(flyingobject object) {
		images = object.ember;
		image = object.image;
		x = object.x;
		y = object.y;
		index = 0;
		i = 0;
	}
	
	public boolean burndown(){
		i++;
		if(i%intevel==0){
			if(index == images.length){
				return true;
			}
			image = images[index++];
		}
		return false;
	}
	public int getx() {
		return x;
	}
	public int gety() {
		return y;
	}
	public bufferedimage getimage() {
		return image;
	}
}

编写敌人类

package com.tarena.shoot;
 
/**
 * 敌人，可以有分数
 */
public interface enemy {
	//敌人的分数
	int getscore();
}

编写敌机子弹类

package com.tarena.shoot;
 
public class enemybullet extends flyingobject {
	private int speed = 2; //移动的速度
	private boolean bomb;
	
	public enemybullet(int x,int y){
		this.x = x;
		this.y = y;
		this.image = shootgame.enemybullet;
	}
	
	public void setbomb(boolean bomb) {
		this.bomb = bomb;
	}
	
	public boolean isbomb() {
		return bomb;
	}
 
	@override
	public void step(){  //移动方法
		y+=speed;
	}
 
	@override
	public boolean outofbounds() {
		return y<-height;
	}
 
}
 
 

编写英雄机类

package com.tarena.shoot;
 
import java.awt.image.bufferedimage;
 
 
/**
 * 英雄机
 * 
 * @author administrator
 * 
 */
public class hero extends flyingobject {
	
	protected bufferedimage[] images = {};
	protected int index = 0;
 
	//private boolean doublefire;
	private int doublefire;
	private int life;
 
	public hero() {
		life = 3;
		doublefire = 0;
		this.image = shootgame.hero0;
		this.ember = shootgame.heroember;
		images = new bufferedimage[]{shootgame.hero0, shootgame.hero1};
		width = image.getwidth();
		height = image.getheight();
		x = 150;
		y = 400;
	}
 
	public int isdoublefire() {
		return doublefire;
	}
 
	public void adddoublefire(){
		doublefire = 40;
	}
	
	public void setdoublefire(int doublefire) {
		this.doublefire = doublefire;
	}
 
	public void addlife() { // 增命
		life++;
	}
 
	public void subtractlife() { // 减命
		life--;
	}
 
	public int getlife() {
		return life;
	}
 
	/**
	 * 当前物体移动了一下，相对距离， x,y鼠标位置
	 */
	public void moveto(int x, int y) {
		this.x = x - width / 2;
		this.y = y - height / 2;
	}
 
	@override
	public boolean outofbounds() {
		return x < 0 || x > shootgame.width - width || y < 0
				|| y > shootgame.height - height;
	}
 
	public bullet[] shoot() { // 发射子弹
		int xstep = width / 4; // 子弹步分为飞机宽度4半
		int ystep = 20;
		if (doublefire>0) {
			bullet[] bullets = new bullet[2];
			bullets[0] = new bullet(x + xstep, y - ystep);
			bullets[1] = new bullet(x + 3 * xstep, y - ystep);
			doublefire -= 2;
			return bullets;
		} else { // 单倍
			bullet[] bullets = new bullet[1];
			bullets[0] = new bullet(x + 2 * xstep, y - ystep); // y-ystep(子弹距飞机的位置)
			return bullets;
		}
	}
 
	@override
	public void step() {
		if(images.length>0){
			image = images[index++/10%images.length];
		}
	}
 
	public boolean hit(flyingobject other) { // 碰撞算法
 
		int x1 = other.x - this.width / 2;
		int x2 = other.x + other.width + this.width / 2;
		int y1 = other.y - this.height / 2;
		int y2 = other.y + other.height + this.height / 2;
		return this.x + this.width / 2 > x1 && this.x + this.width / 2 < x2
				&& this.y + this.height / 2 > y1
				&& this.y + this.width / 2 < y2;
	}
 
	public boolean hit2(enemybullet bb1) {
		int x1 = bb1.x - this.width / 2;
		int x2 = bb1.x + bb1.width + this.width / 2;
		int y1 = bb1.y - this.height / 2;
		int y2 = bb1.y + bb1.height + this.height / 2;
		int hx = this.x + this.width / 2;
		int hy = this.y + this.height / 2;
		return hx > x1 && hx < x2 && hy > y1 && hy < y2;
 
	}
}

编写bgm类

package com.tarena.shoot;
 
import java.applet.applet;
import java.applet.audioclip;
import java.io.file;
import java.net.uri;
import java.net.url;
import javax.swing.jframe;
public class sound extends jframe{ 
file f;
 uri uri;
  url url; 
  
sound(){ 
 try {   
   f = new file("c:\\users\\姜涛\\desktop\\dddd\\studioeim - maplestory.wav"); 
   uri = f.touri();
   url = uri.tourl(); //解析地址
   audioclip aau; 
   aau = applet.newaudioclip(url);
   aau.loop(); //循环播放
 } catch (exception e) 
 { e.printstacktrace();
 } 
}
}

编写主类

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;
 
import dao.dao;
 
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 enemybullet;
	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 enemybullet[] bullets2 = {};//敌机子弹数组
	private hero hero = new hero(); // 英雄机
	private ember[] embers = {}; // 灰烬
	private bigplane bigplane=new bigplane();
 
	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"));
			enemybullet= imageio.read(shootgame.class.getresource("enemybullet.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();
		}
	}
 
	@override
	public 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
		paintenemybullets(g);//画敌机子弹
	}
 
	/** 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);
		}
		
		
		
	}
	public void paintenemybullets(graphics g) {
		for(int i=0;i<bullets2.length;i++) {
			enemybullet e=bullets2[i];
			if(! e.isbomb()) {
				g.drawimage(e.getimage(),e.getx() - e.getwidth() / 2, e.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(0xffffff));
		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) {
		new sound();
		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paint
 
		game.action(); // 启动执行
	}
 
	public void action() { // 启动执行代码
		// 鼠标监听事件
		mouseadapter l = new mouseadapter() {
			@override
			public 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);
				}
			}
 
			@override
			public void mouseentered(mouseevent e) { // 鼠标进入
				if (state == pause) { // 暂停时运行
					state = running;
				}
			}
 
			@override
			public 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
				}
			}
 
			@override
			public 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() {
			@override
			public 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*30
			flyingobject 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();
		
		for (int i = 0; i < bullets2.length; i++) {
			enemybullet c = bullets2[i];
			c.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
		}
		if (shootindex % 100 == 0) {// 大boss发射子弹
			for (int i = 0; i < flyings.length; i++) {
				if (flyings[i] instanceof bigplane) {// 大boss发射子弹
					bigplane boss = (bigplane) flyings[i];
					enemybullet[] b = boss.shoot();
					bullets2 = arrays.copyof(bullets2, bullets2.length + b.length);
					system.arraycopy(b, 0, bullets2, bullets2.length - b.length, b.length);
				}
			}
		}
		
	}
	
	
	
		
//		if (shootindex % 30 == 0) { // 100毫秒发一颗
//			
//			enemybullet[] bs2 =big.shoot(); 
//			bullets = arrays.copyof(bullets, bullets.length + bs2.length); // 扩容
//			system.arraycopy(bs2, 0, bullets, bullets.length - bs2.length,
//					bs2.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0
		bullet[] 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()) {
			try {
				dao.save(score);
			} catch (exception e) {
				// todo auto-generated catch block
				e.printstacktrace();
			}
			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;
		}
		
		for (int i = 0; i < bullets2.length; i++) {
			enemybullet bb = bullets2[i]; // 获取每一个敌人对象
			if (hero.hit2(bb)) { // 返回true,英雄机与敌人相撞了
				hero.subtractlife(); // 英雄机减命
				hero.setdoublefire(0); // 英雄机火力值为0，单倍火力
				// 碰撞后敌人的后果是消失
				enemybullet bb1 = bullets2[i];
				bullets2[i] = bullets2[bullets2.length - 1];
				bullets2[bullets2.length - 1] = bb1;
				bullets2 = arrays.copyof(bullets2, bullets2.length - 1);
			}
		}
		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();
		}
	}
}

下面实现数据库的连接，首先编写将分数写入数据库的方法，在src重新建一个包，包里写写入分数的方法。

<code class="language-java">package dao;

import java.sql.connection;
import java.sql.preparedstatement;
import java.sql.sqlexception;

import util.dbutil;

public class dao {
	/*
	 * 增加分数的方法
	 */
	public static void save(int score) throws exception{
		preparedstatement ps=null;
		connection conn = null;
		try{
		conn = dbutil.getconnection();
		string sql ="insert into mydb2(score) values(?)";
		ps = conn.preparestatement(sql);
		ps.setint(1,score);
		ps.executeupdate();
		}catch(sqlexception e){
			e.printstacktrace();
		}finally{
			dbutil.close(conn);
		}
	}

}</code>

然后连接数据库

package util;
 
import java.sql.connection;
import java.sql.drivermanager;
import java.sql.sqlexception;
 
public class dbutil {
	public static void main(string[]args) throws exception{
		connection conn = dbutil.getconnection();
		system.out.println(conn);
		dbutil.close(conn);
	}
	public static void close(connection conn){
		try{
			if(conn != null){
				conn.close();
			}
		}catch(sqlexception e){
			e.printstacktrace();
		}
	}
	public static connection getconnection() throws exception{
		//system.out.println("112");
		connection conn = null;
		//1.注册驱动（加载驱动）
		class.forname("com.microsoft.sqlserver.jdbc.sqlserverdriver");
		conn = drivermanager.getconnection("jdbc:sqlserver://localhost:1433;databasename=数据库名字","sa", "********");
		
		//system.out.println("123");
		//		try{
//		class.forname("com.microsoft.sqlserver.jdbc.driver");
//		system.out.println("111");
//		//2.建立连接
//		conn = drivermanager.getconnection("jdbc:sqlserver://localhost:1443/mydb2","sa","the1012secret");
//		system.out.println("111");
//		}catch(classnotfoundexception e){
//			//system.out.println("注册驱动");
//		}catch(sqlexception e){
//			e.printstacktrace();
//		}
		return conn;
	}
}