3.cocos2dx之Menu，通过menu来实现场景的切换



1 头文件

TMenu.h

#ifndef __TMENU_H__ #define __TMENU_H__ #include "cocos2d.h" USING_NS_CC; class TMenu :public cclayer { public: static CCScene * scene(); CREATE_FUNC(TMenu); bool init(); Ccmenu * menu; void menuCallback(CCObject * sender); void closeCallback(CCObject * sender); virtual bool ccTouchBegan(CCTouch *pTouch,CCEvent *pEvent); virtual void ccTouchMoved(CCEvent *pEvent); }; #endif

TMenu.cpp

#include "TMenu.h" #include "AppMacros.h" #include "T02LayerSprite.h" #include "T03LayerZorder.h" #include "T04ColorLayer.h" #include "T05Coordinate.h" #include "T06BatchNode.h" #include "T07Schedule.h" #include "T08Touch.h" #include "T09Memory.h" #include "T10Label.h" //通过sizeof(menu_array)求出数组占用的总空间大小 //通过sizeof(*menu_array)求出数组中的每个元素的大小 static char * menu_array[] { "T02LayerSprite.h", "T03LayerZorder.h",21); font-family:新宋体; font-size:9.5pt">"T04ColorLayer.h",21); font-family:新宋体; font-size:9.5pt">"T05Coordinate.h",21); font-family:新宋体; font-size:9.5pt">"T06BatchNode.h",21); font-family:新宋体; font-size:9.5pt">"T07Schedule.h",21); font-family:新宋体; font-size:9.5pt">"T08Touch.h",21); font-family:新宋体; font-size:9.5pt">"T09Memory.h",21); font-family:新宋体; font-size:9.5pt">"T10Label.h" }; CCScene * TMenu::scene() { scene = CCScene::create(); TMenu * layer = create(); scene->addChild(layer); return scene; } bool init() { cclayer::init(); menu = Ccmenu::create(); //通过下面的方式实现将菜单项添加到menu中 for (int i = 0; i < sizeof(menu_array) / sizeof(*menu_array); i++) { CcmenuItem * item = CcmenuItemFont::create(menu_array[i], this, menu_selector(menuCallback)); menu->addChild(item); } //设置菜单的显示方向为垂直方向 menu->alignItemsvertically(); addChild(menu); CCArray * array = menu->getChildren(); CCObject * obj; int i = 0; CCARRAY_FOREACH(array,obj) { CcmenuItem * item = (CcmenuItem*)obj; item->setTag(i + 1 + 10000); i++; } CcmenuItem * closeItem = CcmenuItemImage::create("Closenormal.png","CloseSelected.png"); closeItem->setTarget(this,closeCallback)); Ccmenu * menu2 = create(closeItem,138); font-family:新宋体; font-size:9.5pt">NULL); menu2->setPosition(CCPointZero); closeItem->setPosition(ccp(winSize.width - closeItem->getContentSize().width / 2,138); font-family:新宋体; font-size:9.5pt">winSize.height - closeItem->getContentSize().height / 2)); addChild(menu2); //设置触摸事件，为可touch setTouchEnabled(true); setTouchMode(kCCtouchesOneByOne); return true; } //当点击到菜单之后跳转到指定的CCScene中去 void CCObject * sender) { CcmenuItem *)sender; CCScene * pScene = NULL; switch (item->getTag() - 10000) { case 1: pScene = T02LayerSprite::scene(); break; case 2: pScene = T03LayerZorder::scene(); break; case 3: pScene = T04ColorLayer::scene(); break; case 4: pScene = T05Coordinate::scene(); break; case 5: pScene = T06BatchNode::scene(); break; case 6: pScene = T07Schedule::scene(); break; case 7: pScene = T08Touch::scene(); break; case 8: pScene = T09Memory::scene(); break; case 9: pScene = T10Label::scene(); break; } if (pScene != NULL) { //通过CCDirector的sharedDirector来实现场景的切换 CCDirector::sharedDirector()->replaceScene(pScene); } } //当点击关闭的时候游戏退出 void CCObject * sender) { exit(0); } bool CCEvent *pEvent) { return true; } void CCEvent *pEvent){ CCRect rcWin = CCRect(0,40,138); font-family:新宋体; font-size:9.5pt">winSize.width,138); font-family:新宋体; font-size:9.5pt">winSize.height - 80); CcmenuItem * firstItem = (CcmenuItem *)menu->getChildren()->objectAtIndex(0); CcmenuItem * lastItem = (lastObject(); CCPoint firstInWorld = menu->convertToWorldspace(firstItem->getPosition()); CCPoint lastInWorld = menu->convertToWorldspace(lastItem->getPosition()); //其中Delta的坐标表示的是开始坐标的减去最后坐标的差值 if (rcWin.containsPoint(firstInWorld) && pTouch->getDelta().y<0) return; if (rcWin.containsPoint(lastInWorld) && pTouch->getDelta().y>0) return; menu->setPositionY(menu->getPositionY() + pTouch->getDelta().y); }

运行结果：