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Java实现飞机大战-连接数据库并把得分写入数据库

时间:2021-05-17 14:21     来源/作者:南乔代码Cool

编写飞行物类

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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。

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<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

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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;
    }
}

原文链接:https://blog.csdn.net/qq_41530545/article/details/81024279

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