射击小游戏一02（玩家和怪物添加）

boolHelloWorld::init()



{



    if ( !CCLayer::init() )



    {



        returnfalse;



    }



    glClearColor(255.0f, 255.0f, 255.0f, 1.0f);//背景颜色



    CCSize size = CCDirector::sharedDirector()->getWinSize();



 



    CCSprite *player = CCSprite::create("Player.png");



    player->setPosition(ccp(player->getContentSize().width/2.0f,size.height/2.0f));



    this->addChild(player);    



    //定时的为游戏添加敌人



    this->schedule(schedule_selector(HelloWorld::gameLogic), 1.0f);



    returntrue;



}



 



void HelloWorld::gameLogic(CCTime dt)



{



    this->addTarget();



}



void HelloWorld::addTarget()



{



    CCSize winSize = CCDirector::sharedDirector()->getWinSize();



    CCSprite *target = CCSprite::create("Target.png", CCRect(0, 0, 27, 40));



    //高度随机



    int minY = target->getContentSize().height/2;



    int maxY = winSize.height - target->getContentSize().height/2;



    int rangeY = maxY - minY;



    int actualY = (arc4random()%rangeY) +minY;



    target->setPosition(ccp(winSize.width + (target->getContentSize().width/2),actualY));



    this->addChild(target);    



    //速度随机



    int minDuration = (int)2.0f;



    int maxDuration = (int)4.0f;



    int rangeDuration = maxDuration - minDuration;



    int actualDuration  = (rand()%rangeDuration)+ minDuration;



    //create action



    CCFiniteTimeAction *actionMove = CCMoveTo::create(actualDuration, ccp(0-target->getContentSize().width/2, actualY));



    CCFiniteTimeAction *actionMoveDone = CCCallFuncN::create(this, callfuncN_selector(HelloWorld::spriteMoveFinished));



    target->runAction(CCSequence::create(actionMove,actionMoveDone,NULL));



}



//移出出了屏幕的精灵



void HelloWorld::spriteMoveFinished(CCNode*sender)



{



    CCSprite *sprite = (CCSprite*)sender;



    this->removeChild(sprite, true);



}