cocos2d-x d入、d出效果（以菜单为例子)

概述d入和d出菜单为了使动作更平滑，涉及到动作组合。（CCMoveTo 、CCEaseExponentialOut）（菜单背景图位置仅为示范例子，还需调整） 以菜单的背景图为例： //生成菜单背景图CCSprite* MainMenuBG = CCSprite::create("menu_bg.png");MainMenuBG->setPosition(ccp(visibleSize.width/

d入和d出菜单为了使动作更平滑，涉及到动作组合。（CCMoveto 、CCEaseExponentialOut）（菜单背景图位置仅为示范例子，还需调整）

以菜单的背景图为例：

//生成菜单背景图CCSprite* MainMenuBG = CCSprite::create("menu_bg.png");MainMenuBG->setposition(ccp(visibleSize.wIDth/2 +10,visibleSize.height +20));this->addChild(MainMenuBG,0);MainMenuBG->setTag(menu_bg_tag);//定义背景层 d入d出//MainMenuBG MoveoutCCMoveto* MainMenuBGMoveout = CCMoveto::create(3.0f,ccp(visibleSize.wIDth/2,visibleSize.height/2));CCEaseExponentialOut* MainMenuBGExponentialOut = CCEaseExponentialOut::create(MainMenuBGMoveout);//MainMenuBG MoveinMainMenuBG = (CCSprite*)this->getChildByTag(menu_bg_tag);CCPoint MainMenuBGHIDepoint = ccp(visibleSize.wIDth/2,visibleSize.height + MainMenuBG->getContentSize().height/2);CCMoveto* MainMenuBGMovein=CCMoveto::create(3.0f,MainMenuBGHIDepoint);CCEaseExponentialin* MainMenuBGExponentialin = CCEaseExponentialin::create(MainMenuBGMovein);//调用顺序复合动作CCRepeatForever* rept0= CCRepeatForever::create(CCSequence::create(MainMenuBGExponentialOut,MainMenuBGExponentialin,NulL));MainMenuBG->runAction(rept0);

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源码如下：

//////////////////////////////////////////////*HelloWorldScene.h*/#ifndef __HELLOWORLD_SCENE_H__#define __HELLOWORLD_SCENE_H__#include "cocos2d.h"class HelloWorld : public cocos2d::cclayer{public:    // Here's a difference. Method 'init' in cocos2d-x returns bool,instead of returning 'ID' in cocos2d-iphone    virtual bool init();      // there's no 'ID' in cpp,so we recommend returning the class instance pointer    static cocos2d::CCScene* scene();        // a selector callback    voID menuCloseCallback(CCObject* pSender);//定义菜单项bool MainMenu();       // implement the "static node()" method manually    CREATE_FUNC(HelloWorld);};#endif // __HELLOWORLD_SCENE_H__///////////////////////////////////////////////////////////////////* HelloWorldScene.cpp */#include "HelloWorldScene.h"USING_NS_CC;enum{menu_pause_tag =1,menu_bg_tag=2};CCScene* HelloWorld::scene(){    // 'scene' is an autorelease object    CCScene *scene = CCScene::create();        // 'layer' is an autorelease object    HelloWorld *layer = HelloWorld::create();    scene->addChild(layer,999);    // return the scene    return scene;}// on "init" you need to initialize your instancebool HelloWorld::init(){    //////////////////////////////    // 1. super init first    if ( !cclayer::init() )    {        return false;    }        CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();    CCPoint origin = CCDirector::sharedDirector()->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    CcmenuItemImage *pCloseItem = CcmenuItemImage::create(                                        "Closenormal.png","CloseSelected.png",this,menu_selector(HelloWorld::menuCloseCallback));    pCloseItem->setposition(ccp(origin.x + visibleSize.wIDth - pCloseItem->getContentSize().wIDth/2,origin.y + pCloseItem->getContentSize().height/2));    // create menu,it's an autorelease object    Ccmenu* pMenu = Ccmenu::create(pCloseItem,NulL);    pMenu->setposition(CCPointZero);    this->addChild(pMenu,1);    /////////////////////////////    // 3. add your codes below...//调用菜单MainMenu();    return true;}voID HelloWorld::menuCloseCallback(CCObject* pSender){#if (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) || (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)CcmessageBox("You pressed the close button. windows Store Apps do not implement a close button.","Alert");#else    CCDirector::sharedDirector()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)    exit(0);#endif#endif}bool HelloWorld::MainMenu(){CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();////设定菜单项 MenuItemCcmenuItemImage *item0 = CcmenuItemImage::create("menu_restart_normal_CN.png","menu_restart_pressed_CN.png",menu_selector(HelloWorld::menuCloseCallback));//MenuItem 1CcmenuItemImage *item1 = CcmenuItemImage::create("menu_resume_normal_CN.png","menu_resume_pressed_CN.png",menu_selector(HelloWorld::menuCloseCallback));//MenuItem 2CcmenuItemImage *item2 = CcmenuItemImage::create("menu_quit_normal_CN.png","menu_quit_pressed_CN.png",menu_selector(HelloWorld::menuCloseCallback));//MenuItem 3CcmenuItemImage *item3 = CcmenuItemImage::create("Closenormal.png",menu_selector(HelloWorld::menuCloseCallback));//根据菜单项生成主菜单Ccmenu *MainMenu = Ccmenu::create(item0,item1,item2,item3,NulL);MainMenu->alignItemsverticallyWithpadding(15.0f);MainMenu->setposition(ccp(visibleSize.wIDth/2,visibleSize.height));MainMenu->setTag(menu_pause_tag);this->addChild(MainMenu,1);//生成菜单背景图CCSprite* MainMenuBG = CCSprite::create("menu_bg.png");MainMenuBG->setposition(ccp(visibleSize.wIDth/2 +10,0);MainMenuBG->setTag(menu_bg_tag);//定义d出 菜单d入d出效果//MainMenu moveoutCCMoveto* MainMenuMoveOut = CCMoveto::create(3.0f,visibleSize.height/2));CCEaseExponentialOut* MainMenuExponentialOut = CCEaseExponentialOut::create(MainMenuMoveOut);//MainMenu moveinMainMenu = (Ccmenu*)this->getChildByTag(menu_pause_tag);CCPoint MainMenuHIDepoint = ccp(visibleSize.wIDth/2,visibleSize.height + MainMenu->getContentSize().height/2);CCMoveto* MainMenuMovein=CCMoveto::create(3.0f,MainMenuHIDepoint);CCEaseExponentialin* MainMenuExponentailin = CCEaseExponentialin::create(MainMenuMovein);////定义背景层 d入d出//MainMenuBG MoveoutCCMoveto* MainMenuBGMoveout = CCMoveto::create(3.0f,visibleSize.height/2));CCEaseExponentialOut* MainMenuBGExponentialOut = CCEaseExponentialOut::create(MainMenuBGMoveout);//MainMenuBG MoveinMainMenuBG = (CCSprite*)this->getChildByTag(menu_bg_tag);CCPoint MainMenuBGHIDepoint = ccp(visibleSize.wIDth/2,MainMenuBGHIDepoint);CCEaseExponentialin* MainMenuBGExponentialin = CCEaseExponentialin::create(MainMenuBGMovein);//调用d入 d出动作CCRepeatForever* rept1= CCRepeatForever::create(CCSequence::create(MainMenuExponentialOut,MainMenuExponentailin,NulL));MainMenu->runAction(rept1);CCRepeatForever* rept0= CCRepeatForever::create(CCSequence::create(MainMenuBGExponentialOut,NulL));MainMenuBG->runAction(rept0);return true;}

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