为啥我的 main.lua 里面调不到我注册的 test_C_tolua 函数呢，测试平台 cocos2d-x 3.2

int test_C_tolua(lua_State *L)
{
    int number = lua_tonumber(L, 1);

    number = number + 1;

    lua_pushnumber(L, number);

    return 1;
}
bool AppDelegate::applicationDidFinishLaunching()
{
    auto engine = LuaEngine::getInstance();
    ScriptEngineManager::getInstance()->setScriptEngine(engine);
    LuaStack* stack = engine->getLuaStack();
    stack->setXXTEAKeyAndSign("2dxLua", strlen("2dxLua"), "XXTEA", strlen("XXTEA"));
    lua_State *L = stack->getLuaState();
    lua_register(L, "test_C_tolua", test_C_tolua);

    if (engine->executeScriptFile("src/main.lua")) {
        return false;
    }

    return true;
}

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代码没有啥问题的，跑不了可能是其他原因，没有报错误吗？