[cocos2d-x] 打飞机子弹敌机碰撞检测

自己做了一个简单的打飞机游戏,比较粗糙,下面把子弹和敌人的产生,移动,碰撞的代码拿出来给大家参考参考

在h文件里面申明以下:

    CCArray * allBullet;//存放所有子弹

   void newBullet(float t);//制造子弹

   void moveBullet(float t);//移动子弹

   CCArray * allfoe;//存放所有敌人

   void newFoe(float t);//制造敌人

   void moveFoe(float t);//移动敌人

   void update(float t);//检测碰撞

在cpp文件里面

init方法里

allBullet=CCArray::create();//创建 子弹容器
    allBullet->retain();
    //产生子弹
    this->schedule(schedule_selector(GameScene::newBullet), 0.3);
    //移动子弹
    this->schedule(schedule_selector(GameScene::moveBullet), 0.001);
    
    
    allfoe=CCArray::create();//创建 敌机容器
    allfoe->retain();
    //产生敌人机器
    this->schedule(schedule_selector(GameScene::newFoe), 0.3);
    //移动子弹
    this->schedule(schedule_selector(GameScene::moveFoe), 0.005);
    
    
    //碰撞检测更新
    this->scheduleUpdate();

下面是子弹敌机以及碰撞相对应的方法 有比较详细的注释

void GameScene::update(float t){
    //我的飞机tag是88,获取飞机用于检测是否和敌人碰撞
    CCSprite * spritep=(CCSprite *)this->getChildByTag(88);
    CCArray * foeToDelete=CCArray::create();//这个数组用于存放要被删除的敌人
    foeToDelete->retain();
    CCObject* bt,*foe;
    
    //双层循环检测
    CCARRAY_FOREACH(this->allfoe, foe)
    {
        CCSprite *tmpPlane =(CCSprite *)foe;
        CCARRAY_FOREACH(this->allBullet, bt)
        {
            CCSprite *bullet =(CCSprite *)bt;
            //假如子弹和敌人两个矩形碰撞
            if (bullet->boundingBox().intersectsRect(tmpPlane->boundingBox()))
            {
                allfoe->removeObject(tmpPlane);
                foeToDelete->addObject(tmpPlane);
                this->removeChild(bullet);
                allBullet->removeObject(bullet);
            }
        }
        //假如敌人和自己的飞机碰撞
        if (tmpPlane->boundingBox().intersectsRect(spritep->boundingBox()))
        {
            foeToDelete->addObject(tmpPlane);
            CCDirector::sharedDirector()->getScheduler()->unscheduleAll();//停止所有的unschedule
            this->unscheduleUpdate();//停止update
            CCLabelTTF* over=CCLabelTTF::create("玩完,小武哥太强了", "宋体", 40);
            over->setColor(ccc3(0,0,200));
            over->setPosition(ccp(320, 480));
            this->addChild(over);
        }
    }
    //移除被击中的敌机
    CCARRAY_FOREACH(foeToDelete, foe){
        CCSprite *tmpPlane =(CCSprite *)foe;
        this->removeChild(tmpPlane);
    }
    
    foeToDelete->release();//释放临时敌机数组
}
//创建敌机
void GameScene::newFoe(float t){
    CCSprite *foe =CCSprite::create("diji.png");
    foe->setAnchorPoint(ccp(0, 0));
    foe->setScale(0.5);
    foe->setPosition(ccp(arc4random()%620, 1100));
    this->addChild(foe);
    allfoe->addObject(foe);
}
//移动敌机
void GameScene::moveFoe(float t){
    for (int i=0; i<allfoe->count(); i++) {
        CCSprite* nowfoe=(CCSprite*)allfoe->objectAtIndex(i);
        nowfoe->setPositionY(nowfoe->getPositionY()-8);
        if (nowfoe->getPositionY()<20) {
            this->removeChild(nowfoe);
            allfoe->removeObject(nowfoe);
            i--;
        }
    }
}
//创建子弹
void GameScene::newBullet(float t){
    CCPoint bpoint;
    //得到飞机的位置
    CCSprite * spritep=(CCSprite *)this->getChildByTag(88);
    bpoint.x=spritep->getPositionX();
    bpoint.y=spritep->getPositionY();
    CCSprite * bulletsprite=CCSprite::create("bullet3.png");
    bulletsprite->setPosition(bpoint);
    this->addChild(bulletsprite);
    allBullet->addObject(bulletsprite);
}
//移动子弹
void GameScene::moveBullet(float t){
    for (int i=0; i<allBullet->count(); i++) {
        CCSprite* nowbullet=(CCSprite*)allBullet->objectAtIndex(i);
        nowbullet->setPositionY(nowbullet->getPositionY()+15);
        if (nowbullet->getPositionY()>1136) {
            this->removeChild(nowbullet);
            allBullet->removeObject(nowbullet);
            i--;
        }
    }
}

代码比较粗糙 仅供参考 自己纯手打 转载请申明 谢谢

让飞机移动可以参考我的博客文章::::

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