上一节，创建了一个新项目。现在看看里面都有些什么。
如果用的是3.2版本的引擎默认新建的项目应该是这样的
如果是用3.3的引擎创建的是这样的
显然，第二个简单多了，那么就从简单的说起吧。
1.入口文件
打开src目录
cocos目录里就是引擎的代码了，不去管它。而main.lua就是执行Lua代码的入口文件了。那怎么设置入口文件呢？进入工程目录的\frameworks\runtime-src\Classes下（工程里没有这个目录？构建一下win32的runtime就行了。在 Cocos IDE中右键工程--Cocos工具--构建自定义runtime。）。好了看看AppDelegate.cpp
#include "AppDelegate.h"#include "ccluaEngine.h"#include "SimpleAudioEngine.h"#include "cocos2d.h"#include "Runtime.h"#include "ConfigParser.h"#include "lua_module_register.h"using namespace CocosDenshion;USING_NS_CC;using namespace std;AppDelegate::AppDelegate(){}AppDelegate::~AppDelegate(){ SimpleAudioEngine::end();}//if you want a different context,just modify the value of glContextAttrs//it will takes effect on all platformsvoID AppDelegate::initGLContextAttrs(){ //set OpenGL context attributions,Now can only set six attributions: //red,green,blue,Alpha,depth,stencil GLContextAttrs glContextAttrs = {8,8,24,8}; GLVIEw::setGLContextAttrs(glContextAttrs);}bool AppDelegate::applicationDIDFinishLaunching(){#if (COCOS2D_DEBUG > 0) // NOTE:Please don't remove this call if you want to deBUG with Cocos Code IDE initRuntime();#endif // initialize director auto director = Director::getInstance(); auto glvIEw = director->getopenGLVIEw(); if(!glvIEw) { Size vIEwSize = ConfigParser::getInstance()->getinitVIEwSize(); string Title = ConfigParser::getInstance()->getinitVIEwname();#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32 || CC_TARGET_PLATFORM == CC_PLATFORM_MAC) extern voID createSimulator(const char* vIEwname,float wIDth,float height,bool isLandscape = true,float frameZoomFactor = 1.0f); bool isLanscape = ConfigParser::getInstance()->isLanscape(); createSimulator(Title.c_str(),vIEwSize.wIDth,vIEwSize.height,isLanscape);#else glvIEw = cocos2d::GLVIEwImpl::createWithRect(Title.c_str(),Rect(0,vIEwSize.height)); director->setopenGLVIEw(glvIEw);#endif } auto engine = LuaEngine::getInstance(); ScriptEngineManager::getInstance()->setScriptEngine(engine); lua_State* L = engine->getLuaStack()->getLuaState(); lua_module_register(L); // If you want to use Quick-Cocos2d-X,please uncomment below code // register_all_quick_manual(L); LuaStack* stack = engine->getLuaStack(); stack->setXXTEAKeyAndSign("2dxLua",strlen("2dxLua"),"XXTEA",strlen("XXTEA")); //register custom function //LuaStack* stack = engine->getLuaStack(); //register_custom_function(stack->getLuaState()); #if (COCOS2D_DEBUG > 0) // NOTE:Please don't remove this call if you want to deBUG with Cocos Code IDE startRuntime();#else engine->executeScriptfile(ConfigParser::getInstance()->getEntryfile().c_str());#endif return true;}// This function will be called when the app is inactive. When comes a phone call,it's be invoked toovoID AppDelegate::applicationDIDEnterBackground(){ Director::getInstance()->stopAnimation(); SimpleAudioEngine::getInstance()->pauseBackgroundMusic();}// this function will be called when the app is active againvoID AppDelegate::applicationWillEnterForeground(){ Director::getInstance()->startAnimation(); SimpleAudioEngine::getInstance()->resumeBackgroundMusic();}
其中engine->executeScriptfile(ConfigParser::getInstance()->getEntryfile().c_str());这一行就是设置入口Lua文件了。那么ConfigParser::getInstance()->getEntryfile().c_str()跟main.lua又有什么关系呢，同样打开ConfigParser.cpp
#include "Json/document.h"#include "Json/filestream.h"#include "Json/stringbuffer.h"#include "Json/writer.h"#include "ConfigParser.h"#define CONfig_file "config.Json"#define CONSolE_PORT 6010#define UPLOAD_PORT 6020#define WIN_WIDTH 960#define WIN_HEIGHT 640// ConfigParserConfigParser *ConfigParser::s_sharedInstance = NulL;ConfigParser *ConfigParser::getInstance(voID){ if (!s_sharedInstance) { s_sharedInstance = new ConfigParser(); s_sharedInstance->readConfig(); } return s_sharedInstance;}voID ConfigParser::readConfig(){ string fullPathfile = fileUtils::getInstance()->fullPathForfilename(CONfig_file); string fileContent = fileUtils::getInstance()->getStringFromfile(fullPathfile); if(fileContent.empty()) return; if (_docRootJson.Parse<0>(fileContent.c_str()).HasParseError()) { cocos2d::log("read Json file %s Failed because of %s",fullPathfile.c_str(),_docRootJson.GetParseError()); return; } if (_docRootJson.HasMember("init_cfg")) { if(_docRootJson["init_cfg"].IsObject()) { const rAPIdJson::Value& objectinitVIEw = _docRootJson["init_cfg"]; if (objectinitVIEw.HasMember("wIDth") && objectinitVIEw.HasMember("height")) { _initVIEwSize.wIDth = objectinitVIEw["wIDth"].GetUint(); _initVIEwSize.height = objectinitVIEw["height"].GetUint(); if (_initVIEwSize.height>_initVIEwSize.wIDth) { float tmpvalue = _initVIEwSize.height; _initVIEwSize.height = _initVIEwSize.wIDth; _initVIEwSize.wIDth = tmpvalue; } } if (objectinitVIEw.HasMember("name") && objectinitVIEw["name"].Isstring()) { _vIEwname = objectinitVIEw["name"].GetString(); } if (objectinitVIEw.HasMember("isLandscape") && objectinitVIEw["isLandscape"].IsBool()) { _isLandscape = objectinitVIEw["isLandscape"].GetBool(); } if (objectinitVIEw.HasMember("entry") && objectinitVIEw["entry"].Isstring()) { _entryfile = objectinitVIEw["entry"].GetString(); } if (objectinitVIEw.HasMember("consolePort")) { _consolePort = objectinitVIEw["consolePort"].GetUint(); if(_consolePort <= 0) _consolePort = CONSolE_PORT; } if (objectinitVIEw.HasMember("uploadPort")) { _uploadPort = objectinitVIEw["uploadPort"].GetUint(); if(_uploadPort <= 0) _uploadPort = UPLOAD_PORT; } if (objectinitVIEw.HasMember("isWindowtop") && objectinitVIEw["isWindowtop"].IsBool()) { _isWindowtop= objectinitVIEw["isWindowtop"].GetBool(); } } } if (_docRootJson.HasMember("simulator_screen_size")) { const rAPIdJson::Value& ArrayScreenSize = _docRootJson["simulator_screen_size"]; if (ArrayScreenSize.IsArray()) { for (int i = 0; i<ArrayScreenSize.Size(); i++) { const rAPIdJson::Value& objectScreenSize = ArrayScreenSize[i]; if (objectScreenSize.HasMember("Title") && objectScreenSize.HasMember("wIDth") && objectScreenSize.HasMember("height")) { _screenSizeArray.push_back(SimulatorScreenSize(objectScreenSize["Title"].GetString(),objectScreenSize["wIDth"].GetUint(),objectScreenSize["height"].GetUint())); } } } }}ConfigParser::ConfigParser(voID) :_isLandscape(true),_isWindowtop(false),_consolePort(CONSolE_PORT),_uploadPort(UPLOAD_PORT),_vIEwname("CocosLuaGames"),_entryfile("src/main.lua"),_initVIEwSize(WIN_WIDTH,WIN_HEIGHT){}rAPIdJson::document& ConfigParser::getConfigJsonRoot(){ return _docRootJson;}string ConfigParser::getinitVIEwname(){ return _vIEwname;}string ConfigParser::getEntryfile(){ return _entryfile;}Size ConfigParser::getinitVIEwSize(){ return _initVIEwSize;}bool ConfigParser::isLanscape(){ return _isLandscape;}bool ConfigParser::isWindowtop(){ return _isWindowtop;}int ConfigParser::getConsolePort(){ return _consolePort;}int ConfigParser::getUploadPort(){ return _uploadPort;}int ConfigParser::getScreenSizeCount(voID){ return (int)_screenSizeArray.size();}const SimulatorScreenSize ConfigParser::getScreenSize(int index){ return _screenSizeArray.at(index);}
在构造函数中已经为_erntryfile赋初值了
ConfigParser::ConfigParser(voID) :_isLandscape(true),WIN_HEIGHT){}
2.main.lua
--设置文件加载路径
cc.fileUtils:getInstance():addSearchPath("src")cc.fileUtils:getInstance():addSearchPath("res")-- CC_USE_DEPRECATED_API = true --require相当于C里的include
require "cocos.init"-- cclog
--定义了cclog函数，其中（...）的意思是。这个函数为变长函数，即可接受不同数量的实参。比如cclog（"pi=%.3f"，math.pi） -->pi=3.141
local cclog = function(...) print(string.format(...))end-- for ccluaEngine traceback
--错误消息与追溯
function __G__TRACKBACK__(msg) cclog("----------------------------------------") cclog("LUA ERROR: " .. tostring(msg) .. "\n") --获取当前执行的调用栈
cclog(deBUG.traceback()) cclog("----------------------------------------") return msgendlocal function main() --垃圾回收器的API。collectgarbage（“collect”）执行一轮完整的垃圾收集周期，收集并释放所有不可到达的对象。
collectgarbage("collect") --避免内存泄露
-- avoID memory leak collectgarbage("setpause",100) collectgarbage("setstepmul",5000) --用过Cocos2d-x C++写的下面肯定很熟悉了
-- initialize director local director = cc.Director:getInstance() --turn on display FPS director:setdisplayStats(true) --set FPS. the default value is 1.0/60 if you don't call this director:setAnimationInterval(1.0 / 60) cc.Director:getInstance():getopenGLVIEw():setDesignResolutionSize(480,320,0) --create scene local scene = require("GameScene") local gameScene = scene.create() gameScene:playBgMusic() if cc.Director:getInstance():getRunningScene() then cc.Director:getInstance():replaceScene(gameScene) else cc.Director:getInstance():runWithScene(gameScene) endend--错误处理local status,msg = xpcall(main,__G__TRACKBACK__)if not status then error(msg)end 总结 以上是内存溢出为你收集整理的【Cocos2d-x Lua笔记二】CocosLuaGame开篇全部内容，希望文章能够帮你解决【Cocos2d-x Lua笔记二】CocosLuaGame开篇所遇到的程序开发问题。
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