下一节开始要用cocostudio制作主界面，为了使用最新版的Cocos Studio2.1，需要将引擎升级到3.4.
下面是3.4的升级说明。对于我们的项目来说，机会没什么影响，所以只需要用新引擎创建一个工程，
我们甚至只需要将classes，resource进行简单地覆盖就可以完成引擎升级。
更加优化的渲染流程：改进了2D和3D渲染，《Fantasy Warrior3D》现在不需要hack引擎就可以运行
更小的包体积：iOS和Android平台上，使用系统网络库替换了第三方库libcurl，，iOS的游戏包大小从5.6M缩小到4.3M, Android的APK游戏包大小从2.9M缩小到2.0MCocos Package Manager: 引擎扩展模块化框架，使得基于Cocos2d-x的扩展，更方便地集成与发布，现在GAF已经应用到这个框架中
视锥体裁剪功能：通过计算裁剪掉在屏幕上不可见物体，降低渲染开销，为4.0的全3D和大规模场景提供支持
在这一节里，我从Evakaka大神的博客里学到不少东西，以前我做遮罩从来没用过这样的
方式，现在想起来，真是既简单有粗暴，实在惭愧。
总的来说，这以功能实现起来，在原理上还是非常显而易见的，只不过在具体的实现上，还
是要见仁见智。
主要来说，我们需要新建一个Scene，当我们按下暂定按钮时，见我们新建的这个Scene push出来，
，之所以不用replaceScene是因为，我们总不能一按暂定按钮回来的时候游戏就重新开始吧。
GamepauseScene.h
//// GamepauseScene.h// Fight//// Created by Cytzrs on 15/2/5.////#ifndef __Fight__GamepauseScene__#define __Fight__GamepauseScene__#include <iostream>#include "cocos2d.h"#include "cocos-ext.h"USING_NS_CC_EXT;USING_NS_CC;class GamepauseScene : public Layer{public:static Scene* createScene(RenderTexture*);bool init();CREATE_FUNC(GamepauseScene);void attackAct1(Ref *sender, Control::EventType controlEvent);void attackAct2(Ref *sender, Control::EventType controlEvent);void attackAct3(Ref *sender, Control::EventType controlEvent);//private:// ControlButton* attackBtn1;// ControlButton* attackBtn2;// ControlButton* attackBtn3;};#endif /* defined(__Fight__GamepauseScene__) */GamepauseScene.cpp
//// GamepauseScene.cpp// Fight//// Created by Cytzrs on 15/2/5.////#include "GamepauseScene.h"#include "cocos-ext.h"USING_NS_CC_EXT;#include "HelloWorldScene.h"Scene* GamepauseScene::createScene(RenderTexture* render){auto scene = Scene::create();auto layer = GamepauseScene::create();scene->addChild(layer, 1);auto s = Director::getInstance()->getVisibleSize();auto bg = Sprite::createWithTexture(render->getSprite()->getTexture());bg->setPosition(s/2);bg->setFlippedY(true);bg->setColor(cocos2d::Color3B::GRAY);scene->addChild(bg);return scene;}bool GamepauseScene::init(){while(1){if(!Layer::init())return false;auto s = Director::getInstance()->getVisibleSize();ControlButton* attackBtn1 = ControlButton::create("继续游戏", "fonts/Marker Felt.ttf", 30);attackBtn1->setPosition(s/2);this->addChild(attackBtn1, 7);attackBtn1->addTargetWithActionForControlEvents(this, cccontrol_selector(GamepauseScene::attackAct1),Control::EventType::TOUCH_DOWN);ControlButton* attackBtn2 = ControlButton::create("重新游戏", "fonts/Marker Felt.ttf", 30);attackBtn2->setPosition(s.width/2, s.height/2-100);this->addChild(attackBtn2, 7);attackBtn2->addTargetWithActionForControlEvents(this, cccontrol_selector(GamepauseScene::attackAct2),Control::EventType::TOUCH_DOWN);ControlButton* attackBtn3 = ControlButton::create("回到主界面", "fonts/Marker Felt.ttf", 30);attackBtn3->setPosition(s.width/2, s.height/2-200);this->addChild(attackBtn3, 7);attackBtn3->addTargetWithActionForControlEvents(this, cccontrol_selector(GamepauseScene::attackAct3),Control::EventType::TOUCH_DOWN);////attackBtn2 = ControlButton::create("ATTACK", "fonts/Marker Felt.ttf", 30);//attackBtn2->setPosition(Vec2(visibleSize.width-200, 100));//this->addChild(attackBtn2, 7);////attackBtn3 = ControlButton::create("ATTACK", "fonts/Marker Felt.ttf", 30);//attackBtn3->setPosition(Vec2(visibleSize.width-200, 100));//this->addChild(attackBtn3, 7);return true;}return false;}void GamepauseScene::attackAct1(Ref *sender, Control::EventType controlEvent){// auto scene = HelloWorld::createScene();Director::getInstance()->popScene();}void GamepauseScene::attackAct2(Ref *sender, Control::EventType controlEvent){auto scene = HelloWorld::createScene();Director::getInstance()->replaceScene(scene);}void GamepauseScene::attackAct3(Ref *sender, Control::EventType controlEvent){// auto scene = HelloWorld::createScene();//现在还没有创建主界面，暂且留白Director::getInstance()->popScene();}工程源码
PS:多写博客，帮助自己，方便他人！
与其在那里苦苦挣扎，碍于面子硬撑，倒不如微笑着面对，
