C++和Lua的交互调用

1. <span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">新建一个Quick工程,用Xcode编译软件打开</span>

2. 在此处新建一个C++文件
   
   
3. 在Test.h里面引入三个头文件,添加一些方法
   

   <pre name="code" class="cpp">#include <stdio.h>
   #include "cocos2d.h"
   #include <string>
   USING_NS_CC;
   
   extern "C"
   {
   #include "lua.h"
   #include "lualib.h"
   #include "lauxlib.h"
   
   }
   class Test {
       
   public:
       
       Test();
       void fangwenbianlian();
       void loadFunction();
       static int l_show(lua_State * l);
       ~Test();
   private:
       lua_State *luatest;
   
   };
   

   
   
   4.Test.cpp.每个方法都有详细注释,应该看得懂
   
   

   #include "Test.h"
   
   Test::Test()
   {
           //声明一个指针
           luatest =luaL_newstate();
           //打开Lua库
           luaL_openlibs(luatest);
           //压入函数,
           lua_pushcfunction(luatest, l_show);
           lua_setglobal(luatest, "l_show");
           //加载Lua文件
           std::string path = FileUtils::getInstance() -> fullPathForFilename("Mylua.lua");
           luaL_dofile(luatest,path.c_str());
           lua_pcall(luatest, 0, 0, -1);
   
           //测试函数
           fangwenbianlian();
           loadFunction();
       
   }
   
   //访问Lua里的变量
    void Test::fangwenbianlian(){
   
       lua_pcall(luatest, 0, 0, -1);
       CCAssert(luatest,"文件读取错误!!");
       lua_getglobal(luatest, "username");
       char * rlt = (char*)lua_tostring(luatest, -1);
       CCLOG("username is:%s",rlt);
       
   }
   
   //访问Lua里的函数
   void Test::loadFunction(){
   
   
       lua_getglobal(luatest, "getrlt");
       lua_pushnumber(luatest, 12);
       
       lua_pcall(luatest,1, 2, -1);
       CCAssert(luatest,"文件读取错误!!");
       
       char *rlt = (char*)lua_tostring(luatest, -1);
       char *rlt1 = (char*)lua_tostring(luatest, -2);
       CCLOG("rlt ==>%s",rlt);
       CCLOG("rlt ==>%s",rlt1);
       
   }
   
   int Test:: l_show(lua_State * l){
       
       lua_pushstring(l, "C++函数里的内容");
       
       return 1;
   }
   
   Test::~Test()
   {
       if (luatest)
       {
           delete luatest;
           luatest=NULL;
       }
   }
   

   5.同个目录下新建一个简单的Lua文件
   
   6.
   Lua文件里写入
   

   print("Test My Lua!")
   
   username = "ChenApple"
   
   
    
   function getrlt(x)
   	print("hungjinhui")
       print("传进来的参数为:" ..x)
   	return "OK","YES"
   end
   
   
   print("我调了C++函数  " .. l_show())

   
   7.最后一步,也是最重要的,
   在AppDelegate.cpp,引入Test.h头文件.然后在

   bool AppDelegate::applicationDidFinishLaunching()函数里

   实例一个Test对象

   Test *test =new Test();
   
   
   以上就是一个小Demo