[Cocos2d-x] Cocos2d-x 3.2 Study Notes

Obtain the screen size (visible)

Size visibleSize = Director::getInstance()->getVisibleSize();Vec2 origin = Director::getInstance()->getVisibleOrigin();

Print debugging (cclog)

CCLOG("Characters: %c %c", ‘a‘, 65);CCLOG("Decimals: %d %ld", 1977, 650000L);CCLOG("Preceding with blanks: %10d", 1977);CCLOG("Preceding with zeros: %010d", 1977);CCLOG("Some different radixes: %d %x %o %#x %#o", 100, 100, 100, 100, 100);CCLOG("Floats: %4.2f %.0e %E", 3.1416, 3.1416, 3.1416);CCLOG("%s","A string");

Menu item)

// Create menu auto menuitem = menuitemimage: Create ("menunormal.png", "menuselected.png", cc_callback_1 (helloworld: menucallback, this )); // set the coordinates menuitem-> setposition (vec2 (x, y); // create menu auto menu = menu: Create (menuitem, null ); menu-> setposition (vec2: zero); this-> addchild (menu, 1 );

Create a label)

auto label = LabelTTF::create("Hello World", "Arial", 24);label->setPosition(Vec2(x,y));this->addChild(label, 1);

Add Sprite)

auto sprite = Sprite::create("Me.jpg");sprite->setPosition(Vec2(visibleSize.width / 2 , visibleSize.height / 2));sprite->setAnchorPoint(Vec2(0.5,0.5));this->addChild(sprite, 0);

Action)

auto  actionBy = MoveBy::create(1, Point(100,100));auto  easeAction = EaseIn::create(actionBy, 2.5f);sprite->runAction(Repeat::create(easeAction, 5));

Add listener)

auto listener1 = EventListenerTouchOneByOne::create();listener1->onTouchBegan = [](Touch* touch, Event* event){    auto target = static_cast<Sprite*>(event->getCurrentTarget());    Point locationInNode = target->convertToNodeSpace(touch->getLocation());    Size s = target->getContentSize();    Rect rect = Rect(0, 0, s.width, s.height);            if (rect.containsPoint(locationInNode))    {        log("sprite began... x = %f, y = %f", locationInNode.x, locationInNode.y);        target->setOpacity(180);        return true;    }    return false;};listener1->onTouchMoved = [](Touch* touch, Event* event){    auto target = static_cast<Sprite*>(event->getCurrentTarget());    target->setPosition(target->getPosition() + touch->getDelta());};listener1->onTouchEnded = [=](Touch* touch, Event* event){    auto target = static_cast<Sprite*>(event->getCurrentTarget());    if (target == sprite)    {        log("Click on the sprite");    }};_eventDispatcher->addEventListenerWithSceneGraphPriority(listener1, sprite);