[Cocos2d-x]Cocos2d-x 3.2 学习笔记

获取屏幕大小（Visible）

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

打印调试（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");

创建菜单（Menu Item）

// 创建菜单
auto menuItem = MenuItemImage::create( "MenuNormal.png",
                                       "MenuSelected.png",
                                       CC_CALLBACK_1(HelloWorld::menuCallback, this) );
// 设置坐标
menuItem->setPosition( Vec2(x,y) );
// 创建菜单
auto menu = Menu::create(menuItem, NULL);
menu->setPosition(Vec2::ZERO);
this->addChild(menu, 1);

创建标签（Label）

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

加入精灵（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);

精灵动画（Action）

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

加入监听（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);

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