Luabind inheritance: self not defined

Question

I just got myself into weird problem with Luabind. I want to inherit C++ classes from Lua, but the way described in Luabind documentation just doesn't work.

function MyGame.__init()
    Game.__init(self)
end

This piece of code just crashes the application, because self seems undefined (returns nil if printed out).

I'm using wrapper struct as described in documentation.

struct GameWrapper: Game, luabind::wrap_base{
GameWrapper()
    : Game()
        {}

virtual int Loop(void){
     call<int>("Loop");
}

static int default_Loop(Game* ptr){
    return ptr->Game::Loop();
}


static void Lua(lua_State *lua){
    luabind::module(lua)
    [
    luabind::class_<Game, GameWrapper>("Game")
        .def(luabind::constructor<>())
        .def("Loop", &Game::Loop, &GameWrapper::default_Loop)
    ];
}
};

Any ideas what I might be doing wrong?

score 1 · Accepted Answer · answered Nov 18 '12 at 19:35

but way described in Luabind doc just doesn't work.

Yes it does. You just didn't do it right. Specifically, you didn't notice the use of the : instead of the .. Which has a well-defined meaning in Lua when declaring a function:

function MyGame:__init()
    Game.__init(self)
end

Luabind inheritance: self not defined

1 Answers1