Re: Getting a C++ object back from a luabind::object?

Your suggestion gives me the following error in VS 2008:
"Unhandled exception at 0x7c812afb in LE3.exe: Microsoft C++ exception:
luabind::cast_failed at memory location 0x0012f894..."

Object* Interpreter::ToObject(const int& index)
{
	luabind::object o = luabind::object(L,index);
	//return luabind::touserdata<Object>(o);
	return luabind::object_cast<Object*>(o);
}


Best Regards,

Josh Klint
CEO
Leadwerks Software
www.leadwerks.com

-----Original Message-----
From: Nigel Atkinson [mailto:[email protected]] 
Sent: Wednesday, May 18, 2011 4:31 PM
To: [email protected]
Subject: Re: [luabind] Getting a C++ object back from a luabind::object?

Perhaps 

return luabind::touserdata<Object*>(o);

instead?  I.e. cast to a pointer rather than an object it self.  Perhaps
underneath, it uses dynamic_cast. 

I haven't used luabind::touserdata before though - I'm just guessing.

Personally I would have gone with 

return luabind::object_cast<Object*>(o);

Nigel

On Wed, 2011-05-18 at 09:26 -0700, Josh Klint wrote:
> Here's what I'm trying:
> 
> void Interpreter::PushObject(Object* o)
> {
> 	if (objectmap[o]==NULL) objectmap[o] = new luabind::object(L,o);
> 	objectmap[o]->push(L);
> }
> 		
> Object* Interpreter::ToObject(const int& index)
> {
> 	luabind::object o = luabind::object(L,index);
> 	return luabind::touserdata<Object>(o);
> }
> 
> But if I use this code:
> Entity* entity = new Entity; //The class "Entity" is derived from "Object"
> PushObject(entity);
> entity = (Entity*)ToObject(-1);
> 
> The value returned from ToObject() is NULL.
> 
> 
> Best Regards,
> 
> Josh Klint
> CEO
> Leadwerks Software
> www.leadwerks.com
> 
> -----Original Message-----
> From: Reko Tiira [mailto:[email protected]] 
> Sent: Wednesday, May 18, 2011 1:35 AM
> To: [email protected]
> Subject: Re: [luabind] Getting a C++ object back from a luabind::object?
> 
> I think what you want is:
> 
> return luabind::touserdata<Object>(o);
> 
> Regards,
> Reko Tiira
> 
>
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Read this article and learn how Intel has extended the reach of its 
next-generation tools to help Windows* and Linux* C/C++ and Fortran 
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------------------------------------------------------------------------------
What Every C/C++ and Fortran developer Should Know!
Read this article and learn how Intel has extended the reach of its 
next-generation tools to help Windows* and Linux* C/C++ and Fortran 
developers boost performance applications - including clusters. 
http://p.sf.net/sfu/intel-dev2devmay