Re: [Enigma-devel] Re: network 2-player game

[Tacvek]

----- Original Message ----- 
From: "Daniel Heck" <address@hidden>
To: "Tacvek" <address@hidden>
Sent: Wednesday, March 22, 2006 5:06 PM
Subject: Re: [Enigma-devel] Re: network 2-player game


> > Anyway, My port of enigma to 5.1 is currently working,
>
> Great!

Well it is working except for the fact that the scripts use the old upvalue 
style.

> > So I'll explain my concern about userdata: In Lua 5, userdata can hold
> > arbitrary data. However, I only had a pointer. So I stored the pointer as
> > the data. The problem is that the functions to retrive the userdata will 
> > now
> > return a pointer pointing to my pointer, which then points to the object.
> > The existing code *might*only be dereferncing one pointer, although the
> > existing code may be fine due to the changes found in tolua 5 (on which
> > tolua++ is based).
>
> Since this would probably break all non-trivial levels, I think it's
> relatively easy to fix.  At the most we would have to go through all
> functions in lua.cc and check whether they are still correct, but even
> that is a managable task.
All code in lua.cc has been updated to be able to compile, So i think 
everything in it should be working.
The potential tag problems come in from when tolua hands a pointer to one of 
the wrapped c functions.

Actually, I'm now less sure about the tag related stuff. My more recent 
messages should show this.
Perhaps I will just release my code as-is. It might even be fine as it is. 
Or it might not.
Somebody more familar with lua and Enigma should be able to slap it into 
shape.


> Fair enough; I stopped using tolua 4 because the wrapper code produces
> by it wouldn't compile with more recent g++ version (something like
> char* instead of const char*) and I was too lazy to patch it or update
> it.
Actually that was a bug in the *.pkg file.  you had something like "func(int 
i, char *name[i]);" and it wanted: "func(int i, char **name)".
Both are identical to g++, however tolua generates slightly different code 
for both, one of which g++ did not like.