| View previous topic - View next topic |
| Author |
Message |
akOOma
Wandering Minstrel
Joined: 20 Jun 2002
Posts: 113
Location: Germany
|
 Posted: Wed Aug 27, 2003 7:15 am Post subject: Set up Lua |
[quote] |
|
I decided to use Lua in my current RPG engine (C++). Now I want to know if there's a precompiled version of Lua for MS VC++ 6.0.
If not, please advice me setting up Lua.
_________________
Keep on codin'
-----------------
-----------------
Just another post to increase my rank...
|
|
| Back to top |
|
 |
Bjorn
Demon Hunter
Joined: 29 May 2002
Posts: 1425
Location: Germany
|
| Posted: Wed Aug 27, 2003 6:13 pm Post subject: |
[quote] |
|
http://lua-users.org/wiki/LuaBinaries
You'll sure to find much more usefull information there (on the Wiki) than just the links to the binary distributions. :-)
|
|
| Back to top |
|
|
akOOma
Wandering Minstrel
Joined: 20 Jun 2002
Posts: 113
Location: Germany
|
|
| Back to top |
|
|
Bjorn
Demon Hunter
Joined: 29 May 2002
Posts: 1425
Location: Germany
|
|
| Back to top |
|
|
akOOma
Wandering Minstrel
Joined: 20 Jun 2002
Posts: 113
Location: Germany
|
| Posted: Wed Aug 27, 2003 7:58 pm Post subject: |
[quote] |
|
Ok...I build the whole thing...what have I to do now if I want to use Lua with VC++ 6.0???
_________________
Keep on codin'
-----------------
-----------------
Just another post to increase my rank...
|
|
| Back to top |
|
|
Bjorn
Demon Hunter
Joined: 29 May 2002
Posts: 1425
Location: Germany
|
| Posted: Thu Aug 28, 2003 6:07 pm Post subject: |
[quote] |
|
You mean, compiling a project using Lua? You need to know how to link libs with your EXE. I'm assuming you know that. Then just make sure you link with the Lua libs (iirc, lua.lib and lualib.lib), and maybe the equivalent debug libs for the debug EXE.
Besides linking with the libs, you also need to include Lua's header file(s). Lua is a C library and when you include it in a C++ program, you have to put this around the includes:
extern "C" {
#include <lua.h>
#include <lauxlib.h> // whatever you need
...
}
The extern C is necesary because the libs are compiled in C mode, I think. You could do without if you had compiled the Lua libs in C++ mode.
I'm writing this out of memory, so there may be errors. In my opinion, the Lua documentation and Wiki were enough information to be able to use Lua, and Lua has a very active mailing list. Still, if you want to ask here, that's fine too.
|
|
| Back to top |
|
|
akOOma
Wandering Minstrel
Joined: 20 Jun 2002
Posts: 113
Location: Germany
|
| Posted: Thu Aug 28, 2003 6:43 pm Post subject: |
[quote] |
|
I've found out that by myself...
Sorry new question:
If I want to give variables from C++ to Lua and vice versa ("and back"), is there another way than putting them on the stack???
_________________
Keep on codin'
-----------------
-----------------
Just another post to increase my rank...
|
|
| Back to top |
|
|
white_door
Icemonkey
Joined: 30 May 2002
Posts: 243
Location: New Zealand
|
| Posted: Thu Aug 28, 2003 9:00 pm Post subject: |
[quote] |
|
well if you access the global table, you can directly access lua variables.
So you can access any global lua variable pretty easily, as for accessing a C variable from lua... I don't think that is possible. You could store the value of a C variable in a lua variable.. but that's about it.
these are two functions I *sometimes* use to if just want to access a lua variable quick. they are cool because they can handle complex situations like grabbing elements from with in a table and stuff.
| Code: |
double get_lua_number (lua_State *L, char *var) {
double i;
char buf[255];
sprintf(buf,"_var=%s",var);
lua_dostring(L,buf);
lua_getglobal(L,"_var");
i=lua_tonumber (L,-1);
lua_pop(L,1);
return i;
}
void set_lua_number (lua_State *L, char *var, double value) {
char buf[255];
lua_pushnumber(L,value);
lua_setglobal(L,"_var");
sprintf(buf,"%s=_var;",var);
lua_dostring(L,buf);
}
|
|
|
| Back to top |
|
|
akOOma
Wandering Minstrel
Joined: 20 Jun 2002
Posts: 113
Location: Germany
|
| Posted: Fri Aug 29, 2003 6:07 am Post subject: |
[quote] |
|
Thanks man...that's what I need.
_________________
Keep on codin'
-----------------
-----------------
Just another post to increase my rank...
|
|
| Back to top |
|
|
