射击小游戏一01（子弹添加添加）

void HelloWorld::ccTouchesEnded(CCSet *touches,cocos2d::CCEvent *event)



{



    CCTouch *touch = (CCTouch*)(touches->anyObject());



    CCPoint location = touch->getLocationInView();



    location = CCDirector::sharedDirector()->convertToGL(location);



    



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



    CCSprite *projectile = CCSprite::create("Projectile.png",CCRectMake(0, 0, 20, 20));



    projectile->setPosition(ccp(20, winSize.height/2));



    



     // Determinie offset of location to projectile



    int offX = location.x - projectile->getPosition().x;



    int offY = location.y - projectile->getPosition().y;



    



    if (offX <= 0) return;



    



    this->addChild(projectile);



    



     // Determine where we wish to shoot the projectile to



    int realX = winSize.width + (projectile->getContentSize().width/2);



    float ratio = (float)offY/(float)offX;



    int realY = (realX*ratio) + projectile->getPosition().y;



    CCPoint realDest = ccp(realX,realY);



    



     // Determine the length of how far we're shooting



    int offRealX = realX - projectile->getPosition().x;



    int offRealY = realY - projectile->getPosition().y;



    float length = sqrtf(( offRealX * offRealX )+(offRealY * offRealY));



    



    float velocity = 480/1;// 480pixels/1sec



    float realMoveDuration = length / velocity;



    



    // Move projectile to actual endpoint



    projectile->runAction(CCSequence::create(CCMoveTo::create(realMoveDuration, realDest),CCCallFuncN::create(this, callfuncN_selector(HelloWorld::spriteMoveFinished)),NULL));



    



    



}