首先看看程序运行时:
程序中有四种菜单项按钮:文本菜单项(stop walk),图字菜单项(Hide Bear),Toggle菜单项(Go Right)以及图片菜单(程序开关)。
为了有直观的显示,本程序在上一篇博客(动画制作)基础上修改。
cocos2d-x的菜单CCMenu的创建有几个步骤
1. 创建菜单项(CCMenuItem),并设置位置、点击回调函数。CCMenuItemImage,CCMenuItemLabel,CCMenuItemToggle
2. 将菜单项添加到菜单创建的参数中,并为菜单设置位置、添加到层。
例如:
// 菜单创建
// 图片菜单按钮项
CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
this,
menu_selector(HelloWorld::menuCloseCallback));
CC_BREAK_IF(! pCloseItem);
pCloseItem->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width - 20, 20));
//Pause Resume菜单Label
pStopLabel = CCLabelTTF::create("Stop Walk!", "Arial", 20);
pShowLabel = CCLabelBMFont::create("Hide Bear", "Arial.fnt");
CCMenuItemLabel* pItemLabel = CCMenuItemLabel::create(pStopLabel, this, menu_selector(HelloWorld::menuStopCallback));
CCMenuItemLabel* pItemLabel2 = CCMenuItemLabel::create(pShowLabel, this, menu_selector(HelloWorld::menuShowCallback));
pItemLabel->setPosition(ccp(winSize.width * 0.5 - 60, winSize.height * 0.8));
pItemLabel2->setPosition(ccp(winSize.width * 0.5 + 60, winSize.height * 0.8));
CCMenuItemFont::setFontName("Arial");
CCMenuItemFont::setFontSize(20);
CCMenuItemToggle* pItemToggle = CCMenuItemToggle::createWithTarget(
this, menu_selector(HelloWorld::menuTogglItemCallback), CCMenuItemFont::create("Go Right"), CCMenuItemFont::create("Go Left"), NULL);
pItemToggle->setPosition(ccp(winSize.width * 0.5, winSize.height * 0.2));
CCMenu *pMenu = CCMenu::create(pCloseItem, pItemLabel, pItemLabel2, pItemToggle, NULL);
pMenu->setPosition(CCPointZero);
CC_BREAK_IF(!pMenu);
this->addChild(pMenu);
本程序的HelloWorld代码:
#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__
#include "cocos2d.h"
#include "SimpleAudioEngine.h"
class HelloWorld : public cocos2d::CCLayer
{
public:
HelloWorld();
virtual ~HelloWorld();
// 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 recommand to return the exactly class pointer
static cocos2d::CCScene* scene();
// a selector callback
void menuCloseCallback(CCObject* pSender);
// implement the "static node()" method manually
CREATE_FUNC(HelloWorld);
cocos2d::CCSpriteBatchNode *_actors;
cocos2d::CCSprite *_bear;
// menu callback
void menuStopCallback(CCObject* sender);
void menuShowCallback(CCObject* sender);
void menuTogglItemCallback(CCObject* sender);
protected:
bool bLabelBtnStop;
bool bSpriteIsShow;
bool bGoLeft;
cocos2d::CCLabelTTF* pStopLabel;
cocos2d::CCLabelBMFont* pShowLabel;
};
#endif // __HELLOWORLD_SCENE_H__
#include "HelloWorldScene.h"
using namespace cocos2d;
HelloWorld::HelloWorld()
{
_actors = NULL;
_bear = NULL;
bLabelBtnStop = true;
bSpriteIsShow = true;
pStopLabel = NULL;
pShowLabel = NULL;
bGoLeft = true;
}
HelloWorld::~HelloWorld()
{
}
CCScene* HelloWorld::scene()
{
CCScene * scene = NULL;
do
{
// 'scene' is an autorelease object
scene = CCScene::create();
CC_BREAK_IF(! scene);
// 'layer' is an autorelease object
HelloWorld *layer = HelloWorld::create();
CC_BREAK_IF(! layer);
// add layer as a child to scene
scene->addChild(layer);
} while (0);
// return the scene
return scene;
}
// on "init" you need to initialize your instance
bool HelloWorld::init()
{
bool bRet = false;
do
{
CC_BREAK_IF(! CCLayer::init());
CCSize winSize = CCDirector::sharedDirector()->getWinSize();
// 菜单
// 图片菜单按钮项
CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
this,
menu_selector(HelloWorld::menuCloseCallback));
CC_BREAK_IF(! pCloseItem);
pCloseItem->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width - 20, 20));
//Pause Resume菜单Label
pStopLabel = CCLabelTTF::create("Stop Walk!", "Arial", 20);
pShowLabel = CCLabelBMFont::create("Hide Bear", "Arial.fnt");
CCMenuItemLabel* pItemLabel = CCMenuItemLabel::create(pStopLabel, this, menu_selector(HelloWorld::menuStopCallback));
CCMenuItemLabel* pItemLabel2 = CCMenuItemLabel::create(pShowLabel, this, menu_selector(HelloWorld::menuShowCallback));
pItemLabel->setPosition(ccp(winSize.width * 0.5 - 60, winSize.height * 0.8));
pItemLabel2->setPosition(ccp(winSize.width * 0.5 + 60, winSize.height * 0.8));
CCMenuItemFont::setFontName("Arial");
CCMenuItemFont::setFontSize(20);
CCMenuItemToggle* pItemToggle = CCMenuItemToggle::createWithTarget(
this, menu_selector(HelloWorld::menuTogglItemCallback), CCMenuItemFont::create("Go Right"), CCMenuItemFont::create("Go Left"), NULL);
pItemToggle->setPosition(ccp(winSize.width * 0.5, winSize.height * 0.2));
CCMenu *pMenu = CCMenu::create(pCloseItem, pItemLabel, pItemLabel2, pItemToggle, NULL);
pMenu->setPosition(CCPointZero);
CC_BREAK_IF(!pMenu);
this->addChild(pMenu);
// add bear animation
CCSpriteFrameCache *cache = CCSpriteFrameCache::sharedSpriteFrameCache();
cache->addSpriteFramesWithFile("Bears.plist");
_actors = CCSpriteBatchNode::create("Bears.png");
this->addChild(_actors);
_bear = CCSprite::createWithSpriteFrameName("bear1.png");
_bear->setPosition(ccp(winSize.width / 2, winSize.height / 2 ));
_actors->addChild(_bear);
// 为每帧创建图片
CCArray *walkFrames = CCArray::createWithCapacity(8);
for (int i = 1; i <= 8; i++)
{
CCSpriteFrame *frame = cache->spriteFrameByName(CCString::createWithFormat("bear%1d.png", i)->getCString());
walkFrames->addObject(frame);
}
// 创建动画
CCAnimation *walkAnimation = CCAnimation::createWithSpriteFrames(walkFrames, 1.0f / 12.0f);
CC_BREAK_IF(!walkAnimation);
CCAnimate* walkAnimate = CCAnimate::create(walkAnimation);
CC_BREAK_IF(!walkAnimate);
// 运行动画动作
_bear->runAction(CCRepeatForever::create(walkAnimate));
bRet = true;
} while (0);
return bRet;
}
void HelloWorld::menuCloseCallback(CCObject* pSender)
{
// "close" menu item clicked
CCDirector::sharedDirector()->end();
}
void HelloWorld::menuStopCallback(CCObject* pSender)
{
if (bLabelBtnStop)
{
_bear->pauseSchedulerAndActions();
bLabelBtnStop = false;
pStopLabel->setString("Go Walk");
}
else
{
_bear->resumeSchedulerAndActions();
bLabelBtnStop = true;
pStopLabel->setString("Stop Walk");
}
}
void HelloWorld::menuShowCallback(CCObject* sender)
{
if (bSpriteIsShow)
{
_bear->setVisible(false);
pShowLabel->setString("Show Bear");
bSpriteIsShow = false;
}
else
{
_bear->setVisible(true);
pShowLabel->setString("Hide Bear");
bSpriteIsShow = true;
}
}
void HelloWorld::menuTogglItemCallback(CCObject* sender)
{
if (bGoLeft)
{
_bear->setScaleX(-1);
bGoLeft = false;
}
else
{
_bear->setScaleX(1);
bGoLeft = true;
}
}