#include "HelloWorldScene.h" //命名空间 // #define USING_NS_CC using namespace cocos2d USING_NS_CC; /************************************************************************/ /* HelloWorldScene.h 与 HelloWorldScene.cpp 这两个文件定义了helloworld项目中的默认场景 HelloWorld类继承自CCLayer,因此他本身也是一个层 */ /************************************************************************/ 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() { /************************************************************************/ /* init()可以简单的划分为4部分 1.调用父类的init方法来进行最初的初始化 2.创建关闭程序的菜单并添加到层中 3.创建一个文本标签并添加到层中,显示“HelloWorld” 4.用“HelloWorld.png”创建一个精灵,并添加到层中 */ /************************************************************************/ ////////////////////////////// // 1. super init first if ( !Layer::init() ) { return false; } Size visibleSize = Director::getInstance()->getVisibleSize(); Vec2 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)); //宏定义 closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2,origin.y + closeItem->getContentSize().height/2)); //log test == 为啥输出的都是0 ? CCLOG("origin.x==%d,origin.y==%d",origin.x,origin.y); CCLOG("visibleSize.width==%d",visibleSize.width); CCLOG("closeItem->getContentSize().width/2==%d",closeItem->getContentSize().width / 2); CCLOG("closeItem->getCOntentSize().height/2==%d",closeItem->getContentSize().height / 2); // create menu,it's an autorelease object auto menu = Menu::create(closeItem,NULL); menu->setPosition(Vec2::ZERO); this->addChild(menu,1); //我改成50,原来是1 ///////////////////////////// // 3. add your codes below... //ml @2014.11.25 12:06 //CCSprite * bird = CCSprite spriteWithFile : @"bird01.png"; auto fish = CCSprite::create(); CCLOG("retaincount after init:%d",fish->getReferenceCount()); // 1 fish->retain(); CCLOG("retaincount after retain:%d",fish->getReferenceCount()); // 2 fish->release(); CCLOG("retainCount after release:%d",fish->getReferenceCount()); // 2 //fish->autorelease(); //此处和上面的release()不能同时出现,否则会出现断点 CCLOG("retainCount after autorelease:%d",fish->getReferenceCount()); // 2 //很有趣,若把fish->release();注释掉,下面的那个不注释,则结果是1,2,1,1 // add a label shows "Hello World" // create and initialize a label // TTF(TrueTypeFont)是一种字库名称 auto label = Label::createWithTTF("Hello World","fonts/Marker Felt.ttf",24); // position the label on the center of the screen label->setPosition(Vec2(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); // add "HelloWorld" splash screen" auto sprite = Sprite::create("HelloWorld.png"); // position the sprite on the center of the screen sprite->setPosition(Vec2(visibleSize.width/2 + origin.x,visibleSize.height/2 + origin.y)); // add the sprite as a child to this layer this->addChild(sprite,0); return true; } void HelloWorld::menuCloseCallback(Ref* pSender) { #if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert"); return; #endif Director::getInstance()->end(); #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS) exit(0); #endif }原文链接:https://www.f2er.com/cocos2dx/345776.html