Cocos2d-x 3.0开发（三）点击交互的四种处理beta2版代码

#include "HelloWorldScene.h" USING_NS_CC; using namespace gui; Scene* HelloWorld::createScene() { // 'scene' is an autorelease object auto scene = Scene::create(); // 'layer' is an autorelease object auto layer = HelloWorld::create(); // add layer as a child to scene scene->addChild(layer); // return the scene return scene; } // on "init" you need to initialize your instance bool HelloWorld::init() { ////////////////////////////// // 1. super init first if ( !Layer::init() ) { return false; } Size visibleSize = Director::getInstance()->getVisibleSize(); Point origin = Director::getInstance()->getVisibleOrigin(); ///////////////////////////// // 2. add a menu item with "X" image, which is clicked to quit the program // you may modify it. // add a "close" icon to exit the progress. it's an autorelease object auto closeItem = MenuItemImage::create( "CloseNormal.png", "CloseSelected.png", CC_CALLBACK_1(HelloWorld::menuCloseCallback, this)); closeItem->setPosition(Point(origin.x + visibleSize.width - closeItem->getContentSize().width/2 , origin.y + closeItem->getContentSize().height/2)); // create menu, it's an autorelease object auto menu = Menu::create(closeItem, NULL); menu->setPosition(Point::ZERO); this->addChild(menu, 1); ///////////////////////////// // 3. add your codes below... // add a label shows "Hello World" // create and initialize a label auto label = LabelTTF::create("Hello World", "Arial", 24); // position the label on the center of the screen label->setPosition(Point(origin.x + visibleSize.width/2, origin.y + visibleSize.height - label->getContentSize().height)); // add the label as a child to this layer this->addChild(label, 1,11); // add "HelloWorld" splash screen" auto sprite = Sprite::create("HelloWorld.png"); // position the sprite on the center of the screen sprite->setPosition(Point(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y)); // add the sprite as a child to this layer this->addChild(sprite, 0); setTouchEnabled(true); //设置为单点响应 setTouchMode(Touch::DispatchMode::ONE_BY_ONE); /////////////////////////////////////////////////////// auto moveSp = Sprite::create("things.png"); moveSp->setPosition(Point(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y)); this->setTag(1); this->addChild(moveSp); auto dispatcher = Director::getInstance()->getEventDispatcher(); auto myListener = EventListenerTouchOneByOne::create(); //如果不加入此句消息依旧会向下传递 myListener->setSwallowTouches(true); myListener->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)) { target->setOpacity(180); return true; } return false; }; myListener->onTouchMoved = [=](Touch* touch,Event* event) { auto target = static_cast<Sprite*>(event->getCurrentTarget()); target->setPosition(target->getPosition()+touch->getDelta()); }; myListener->onTouchEnded = [=](Touch* touch,Event* event) { auto target = static_cast<Sprite*>(event->getCurrentTarget()); if(target) { target->setOpacity(255); } }; dispatcher->addEventListenerWithSceneGraphPriority(myListener,moveSp); ///////////////////////////////////// Button* button = Button::create(); button->setTouchEnabled(true); button->loadTextures("button.png","button_pressed.png",""); button->setPosition(Point(visibleSize.width + origin.x - 200, visibleSize.height/2 + origin.y)); button->addTouchEventListener(this,toucheventselector(HelloWorld::touchButton)); this->addChild(button); return true; } void HelloWorld::touchButton(Object* object,TouchEventType type) { LabelTTF* label; switch (type) { case TouchEventType::TOUCH_EVENT_BEGAN: label = static_cast<LabelTTF*>(getChildByTag(11)); label->setString("按下按钮"); break; case TouchEventType::TOUCH_EVENT_MOVED: label = static_cast<LabelTTF*>(getChildByTag(11)); label->setString("按下按钮移动"); break; case TouchEventType::TOUCH_EVENT_ENDED: label = static_cast<LabelTTF*>(getChildByTag(11)); label->setString("放开按钮"); break; case TouchEventType::TOUCH_EVENT_CANCELED: label = static_cast<LabelTTF*>(getChildByTag(11)); label->setString("取消点击"); break; default: break; } } bool HelloWorld::onTouchBegan(Touch* touch, Event *event) { return true; } void HelloWorld::onTouchMoved(Touch* touch, Event *event) { this->setPosition(this->getPosition()+touch->getDelta()); } void HelloWorld::onTouchEnded(Touch* touch, Event *event) { } void HelloWorld::menuCloseCallback(Object* pSender) { Director::getInstance()->end(); #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS) exit(0); #endif }