c++ 调用lua 可传两个参数的 重载方法

int LuaEngine::executeGlobalFunction(const char* functionName, int numArgs)

{

    lua_State *luaState = LuaEngine::getInstance()->getLuaStack()->getLuaState();

    

    lua_getglobal(luaState, functionName);       /* query function by name, stack: function */

    if (lua_isfunction(luaState, -1))

    {

        if (numArgs > 0)

        {

            lua_insert(luaState, -(numArgs + 1));                        /* stack: ... func arg1 arg2 ... */

        }

        

        int traceback = 0;

        lua_getglobal(luaState, "__G__TRACKBACK__");                     /* stack: ... func arg1 arg2 ... G */

        if (!lua_isfunction(luaState, -1))

        {

            lua_pop(luaState, 1);                                        /* stack: ... func arg1 arg2 ... */

        }

        else

        {

            traceback = -(numArgs + 2);

            lua_insert(luaState, traceback);                             /* stack: ... G func arg1 arg2 ... */

        }

        

        int error = 0;

        error = lua_pcall(luaState, numArgs, 1, traceback);              /* stack: ... ret */

        if (error)

        {

            if (traceback == 0)

            {

                CCLOG("[LUA ERROR] %s", lua_tostring(luaState, - 1));    /* stack: ... error */

                lua_pop(luaState, 1); // remove error message from stack

            }

            return 0;

        }

        

        // get return value

        int ret = 0;

        if (lua_isnumber(luaState, -1))

        {

            ret = lua_tointeger(luaState, -1);

        }

        else if (lua_isboolean(luaState, -1))

        {

            ret = lua_toboolean(luaState, -1);

        }

        

        lua_pop(luaState, 1); // remove return value from stack

        return ret;

    }

    else

    {

        CCLOG("[LUA ERROR] name '%s' does not represent a Lua function", functionName);

        lua_pop(luaState, 1);

        lua_pop(luaState, numArgs); // remove args from stack

        return 0;

    }

    

}