RE: Fastest way of mapping a C++ object (or C struct) to Lua
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- Subject: RE: Fastest way of mapping a C++ object (or C struct) to Lua
- From: "Evan Wies" <evan@...>
- Date: Thu, 1 Jan 2004 19:59:58 -0500
I really like luabind (http://luabind.sourceforge.net). It basically does
what tolua does, but uses template metaprogramming and some binding
functions, rather than parsing a "cleaned header" which generates code. You
could do it yourself (as the other posts describe), but (for my purposes at
least) why bother if a compiler can make the same thing for you via
templates.
You would simply do this:
void register_objects( lua_State* L )
{
using namespace luabind;
module( L )
[
class<vector3>("vector3")
// bind vector3 properties / methods for use in lua
,
class_<NPC>( "NPC" )
.def( constructor<>() )
.property( "health", &NPC::Health )
.property( "position", &NPC::position )
.def( "Move", &NPC::Move )
];
}
Now you can simply use it in Lua:
npc = NPC();
npc.health = 1;
npc.position = vector3(0,0,0);
Npc:Move();
-Evan
-----Original Message-----
From: Jose Marin [mailto:jose_marin2@yahoo.com.br]
Sent: Wednesday, December 31, 2003 9:39 AM
To: lua@bazar2.conectiva.com.br
Subject: Fastest way of mapping a C++ object (or C struct) to Lua
Hi.
What´s the fastest way of mapping a C++ object (or C
struct) to Lua?
In C++
class NPC{
int health;
vector3 position;
// other attributes
void Move();
// other methods
};
In LUA
enemy1.health = 100
enemy1.Move()
If is there some way of map fast a C struct to a LUA
variable, this will be enough.
Note:
I wont use tolua, great tool, but I want to learn how
to do this myself
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