If I create a package that contains:
HBboolean IsPlaying(hbBaseAudioObject* audio);
and in the script if I do:
flag = Audio:IsPlaying("MP3Splash")
if flag == Core.HB_TRUE then
Log:Print("Audio is playing")
end
This won't work as IsPlaying returns a userdata, and Core.HB_FALSE and
Core.HB_TRUE are both numbers.
How can I cure this mis-match with ToLua? I seem to be doing something
fundamentally wrong.
Thanks
Mike
Quoting pixellent@stodge.net:
> Ah, it seems I have to use Core.HB_FALSE and Core.HB_TRUE. ToLua generated
> this
> code:
>
> int tolua_hbCoreTypes_open (lua_State* tolua_S)
> {
> tolua_open(tolua_S);
> toluaI_reg_types(tolua_S);
> tolua_module(tolua_S,"Habitat");
> tolua_module(tolua_S,"Core");
> tolua_constant(tolua_S,"Core","HB_FALSE",HB_FALSE);
> tolua_constant(tolua_S,"Core","HB_TRUE",HB_TRUE);
> }
>
> Thanks again
> Mike
>
> Quoting Ariel Manzur <listas@anime.com.ar>:
>
> > Hi..
> >
> > I'm not sure but tolua might be including the #defined stuff inside the
> > modules, so you might have to use Habitat.Core.HB_TRUE
> >
> > Anyway, tolua has it's own boolean implementation (I think I saw a
> > tolua_pushbool() function on the library, they just push a number or
nil),
>
> > so you can safely use functions and variables of type 'bool'. You should
> > also know that (as far as I know, someone please correct me) 0 is
_true_ on
>
> > lua:
> >
> > $ lua
> > Lua 4.0.1 Copyright (C) 1994-2000 TeCGraf, PUC-Rio
> > > a = 0
> > > if a then print "a is true" end
> > a is true
> > > a = nil
> > > if a then print "a is true" end
> > > ^Z
> >
> > it took me a while to figure that out.. I guess '0' is a value of type
> > number, and that's better that just 'nil' ;) we usually have the lines
> > 'true = 1' and 'false = nil' at the begining of our scripts to avoid
> > confusion..
> >
> > Hope that helps.. bye.
> >
> > Ariel.
> >
> > At 22:39 26/04/2003 -0400, you wrote:
> > > >From my reading Lua doesn't support booleans. No problem I
thought; I'll
>
> > > just
> > >define TRUE and FALSE and typedef unsigned char to be my own boolean
> type,
> > and
> > >then expose them using ToLua.
> > >
> > >So this is my C++ code:
> > >
> > >namespace Habitat
> > >{
> > > namespace Core
> > > {
> > > typedef unsigned char HBboolean;
> > > #define HB_TRUE 1
> > > #define HB_FALSE 0
> > > }
> > >}
> > >
> > >And this is my package file:
> > >
> > >module Habitat
> > >{
> > > module Core
> > > {
> > > typedef unsigned char HBboolean;
> > > #define HB_TRUE 1
> > > #define HB_FALSE 0
> > > }
> > >}
> > >
> > >Now when I try to use these in my Lua scripts, nothing works:
> > >
> > > flag = HB_FALSE
> > > flag2 = HB_TRUE
> > >
> > > Log:Print(type(HB_FALSE))
> > > Log:Print(type(HB_TRUE))
> > >
> > > Log:Print(type(flag))
> > > Log:Print(type(flag2))
> > >
> > >
> > >These all display:
> > >
> > >nil
> > >
> > >Am I missing something really obvious? Any help greatly appreciated.
> > >
> > >Thanks
> > >Mike
> >
> > Ariel.
> > http://Anime.com.ar
> > snm
> >
> >
>
>
>
>
