游戏开发引擎—Cocos2d-x 3.2开发《大富翁》退出对话框

游戏开发引擎—Cocos2d-x 3.2开发《大富翁》退出对话框 游戏开发引擎—Cocos2d-x 3.2开发《大富翁》04_ 退出对话框 本文检索关键词:游戏引擎，游戏开发引擎，cocos引擎html5游戏开发 上一节中介绍了如何制作菜单场景,本节主要讲如何制作游戏中的退出对话框。 效果图, 首先看看在MenuScene.cpp如是如何调用对话框的, 1 void MenuScene::popupLayer(){ 2 // 定义一个弹出层,传入一张背景图 3 PopupLayer* popDialog = PopupLayer::create(DIALOG_BG); 4 // ContentSize 是可选的设置,可以不设置,如果设置把它当作 9 图缩放 5 popDialog->setContentSize(CCSizeMake(Quit_Dialog_Size_Width, Quit_Dialog_Size_Height)); 6 popDialog->setTitle(DIALOG_TITLE); 7 popDialog->setContentText(DIALOG_CONTENT, 20, 60, 250); 8 // 设置回调函数,回调传回一个 CCNode 以获取 tag 判断点击的按钮 9 popDialog->setCallbackFunc(this, callfuncN_selector(MenuScene::quitButtonCallback)); 10 // 添加按钮,设置图片,文字,tag 信息 11 popDialog->addButton(BUTTON_BG1, BUTTON_BG3, OK, Btn_Quit_OK_TAG); 12 popDialog->addButton(BUTTON_BG2, BUTTON_BG3, CANCEL, Btn_Quit_Cancel_TAG); 13 this->addChild(popDialog);// 添加到当前层 14 } PopupLayer.h 和 PopupLayer.cpp是弹出对话框的代码, 首先看PopupLayer.h 1 const int Pop_FontSize = 20;//定义字体大小 2 class PopupLayer :public Layer 3 { 4 static PopupLayer * create(const char* backgroundImage);//根据背景图创建对象 5 void setTitle(const char* title ,int fontsize=Pop_FontSize);//设置对话框标题 6 void setContentText(const char* text ,int fontsize=Pop_FontSize ,int padding=50 ,int paddintTop=1 7 00);//设置对话框文本内容 8 void setCallbackFunc(Object* target, SEL_CallFuncN callfun);//设置按键回调方法 9 bool addButton(const char* normalImage, const char* selectedImage, const char* title, int tag=0);// 10 添加对话框按键,如确认取消 11 virtual void onEnter();//当进入时调用 12 virtual void onExit();// 13 void buttonCallback(CCObject* pSender); 14 int m_contentPadding;// 文字内容两边的空白区距离 15 int m_contentPaddingTop; //文字上边空白区距离 16 CCObject* m_callbackListener; 17 SEL_CallFuncN m_callback; 18 //定义具有retain属性的变量 19 CC_SYNTHESIZE_RETAIN(Menu*, m__pMenu, MenuButton); 20 CC_SYNTHESIZE_RETAIN(Sprite*, m__sfBackGround, SpriteBackGround); ……………………. }; PopupLayer.cpp部分代码如下, 1 PopupLayer::PopupLayer():m__pMenu(NULL), m_contentPadding(0), m_contentPaddingTop(0), m_c 2 allbackListener(NULL) 3 , m_callback(NULL), m__sfBackGround(NULL), m__s9BackGround(NULL), m__ltContentText(NULL), 4 m__ltTitle(NULL) 5 { 6 } 7 //释放变量 8 PopupLayer::~PopupLayer() 9 { 1 CC_SAFE_RELEASE(m__pMenu); 0 CC_SAFE_RELEASE(m__sfBackGround); 1 CC_SAFE_RELEASE(m__ltContentText); 1 CC_SAFE_RELEASE(m__ltTitle); 1 CC_SAFE_RELEASE(m__s9BackGround); 2 } 1void PopupLayer::setCallbackFunc(cocos2d::Object *target, SEL_CallFuncN callfun) 3 { 1//menuItem根据调传入的对象,会进行方法的回调 4 m_callbackListener = target; 1 m_callback = callfun; 5 } 1bool PopupLayer::init() 6 { 1 // 初始化需要的 Menu,随后跟进参数向menu中添加Item选项 7 Menu* menu = Menu::create(); 1 menu->setPosition(CCPointZero); 8 setMenuButton(menu); 1setTouchMode(Touch::DispatchMode::ONE_BY_ONE); 9 auto listener = EventListenerTouchOneByOne::create(); 2 listener->setSwallowTouches(true); 0 listener->onTouchBegan = [](Touch *t,Event *e){ 2CCLog("PopupLayer touch"); 1 return true; 2 }; 2 _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);//屏蔽下层事件响应 2 return true; 3 } 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 根据参数、标题、tag、图片效果,添加MenuItem选项, 1 bool PopupLayer::addButton(const char *normalImage, const char *selectedImage, const char *title, in 2 t tag) 3 { 4 Size winSize = CCDirector::getInstance()->getWinSize(); 5 Point pCenter = ccp(winSize.width / 2, winSize.height / 2); 6 // 创建MenuItem按钮,并设置回调方法 7 MenuItemImage* menuImage = MenuItemImage::create(normalImage, selectedImage, this, menu_ 8 selector(PopupLayer::buttonCallback)); 9 menuImage->setTag(tag); 1 menuImage->setPosition(pCenter); 0 // 给MenuItem添加文字说明并设置在MenuItem中位置 1Size imenu = menuImage->getContentSize(); 1 LabelTTF* ttf = LabelTTF::create(title, "", 20); 1 ttf->setColor(ccc3(0, 0, 0)); 2 ttf->setPosition(ccp(imenu.width / 2, imenu.height / 2)); 1 menuImage->addChild(ttf); 3 getMenuButton()->addChild(menuImage); 1 return true; 4 1 5 1 6 现在来看MenuItem的回调方法buttonCallback 1 void PopupLayer::buttonCallback(cocos2d::CCObject *pSender) 2 { 3 Node* node = dynamic_cast(pSender); 4 CCLog("touch tag: %d", node->getTag()); 5 if (m_callback && m_callbackListener){ 6 (m_callbackListener->*m_callback)(node);//这会调用setCallbackFunc,,方法传入的MenuScene 7 对象的quitButtonCallback,,方法 8 } 9 this->removeFromParent();//把对话框从父节点移除 } 对话框弹出前调用onEnter方法进行界面初始化工作 1 void PopupLayer::onEnter() 2 { 3 ………………….. 4 Size contentSize; 5 // 设置对话框背景,代码省略 6 // 添加按钮,并设置其位置 7 this->addChild(getMenuButton()); 8 float btnWidth = contentSize.width / (getMenuButton()->getChildrenCount() + 1); 9 Vector vecArray = getMenuButton()->getChildren(); 1 int j=0; 0 for(auto it=vecArray.begin();it!=vecArray.end();it++) 1 { 1 Node* node = dynamic_cast(*it); 1 node->setPosition(Point(winSize.width/2 - contentSize.width/2+btnWidth*(j+1),winSize.height/2-c 2 ontentSize.height/3)); 1 j++; 3 } 1 4 // 显示对话框标题内容省略 1 // 添加对话框弹出效果 5 Action* popupLayer = Sequence::create(ScaleTo::create(0.0, 0.0), 1 ScaleTo::create(0.15, 1.05), 6 ScaleTo::create(0.08, 0.95), 1 ScaleTo::create(0.08, 1.0),NULL); 7 this->runAction(popupLayer); 1} 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 代码写的稍微多了些,为便于测试,我把代码上传一下,下载,cocos2d-x-3.2_richer(第 四部分).rar