Message Board
| Message Board > Fenix / Bennu / Gemix / DIV > Fenix DLL questionisms |
| July 12, 2007, 23:28 | |
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OScoder
None 1338 posts |
Hi, I'm currently experimenting with making dlls for fenix (I got a simple dev-cpp project working!). Why is it I can find no documentation of the dll-api whatsoever (I'm using fenix 0.92a)? For what I want to do to work, I need to be able to call a process/function from the game that imports the dll - is there any way to do this (I won't say what for yet  )? Also, do all exported functions have to be declared as type "static int", or is it possible to declare others?Thanks, OScoder ____________ om |
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| July 13, 2007, 01:11 | |
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Moogle
Enterprise Edition 239 posts 
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*Moogle patiently waits for a big Sandman reply
____________ I am Moogle and I approve this message. Quoting (. )( .) in the Bugs topic: Everytime I login the threads with new posts are by Dennis.
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| July 13, 2007, 10:01 | |
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Quiest
now with more happynes 142 posts 
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I`d also like some info on writing and using dlls for/in Fenix. Sandyman?
____________ Roundhousekick to the face, baby! |
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| July 13, 2007, 12:38 | |
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Dennis
どこかにいる 2092 posts 
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Quoting OScoder: Hi, You could download Sandman's Network.dll and look at his code to see how he does it. It will be a good idea to put on the fenix wiki. have you checked http://fenix.itlodge.net yet?
I'm currently experimenting with making dlls for fenix (I got a simple dev-cpp project working!). Why is it I can find no documentation of the dll-api whatsoever (I'm using fenix 0.92a)? For what I want to do to work, I need to be able to call a process/function from the game that imports the dll - is there any way to do this (I won't say what for yet )? Also, do all exported functions have to be declared as type "static int", or is it possible to declare others?Thanks, OScoder ____________ Kwakkel |
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| July 13, 2007, 12:46 | |
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Fiona
games are terrible -9616558 posts 
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Quoting Moogle: *Moogle patiently waits for a big Sandman reply You remember how whenever Slainte used to post on div-arena it was always a bunch of technical gobbldy-gook that no one in the world understood? I have a feeling Sandman will end up like that one day. ____________ laffo |
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| July 13, 2007, 14:03 | |
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Dennis
どこかにいる 2092 posts
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strange people they become they even allocate the memory in their caddy when they go to the super market. ____________ Kwakkel |
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| July 13, 2007, 16:57 | |
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Rincewind
programmer 1545 posts 
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Quoting OScoder: Why is it I can find no documentation of the dll-api whatsoever (I'm using fenix 0.92a)? Probably because there is no documentation for that. Quoting OScoder: For what I want to do to work, I need to be able to call a process/function from the game that imports the dll - is there any way to do this (I won't say what for yet )? It is possible to call processes/functions from the game in the dll, however as far as I know it's impossible to use parameters. Code: INSTANCE * proc = instance_new (procdef_get(/* process_type here */), first_instance); return instance_go (proc); With /* process_type here */ being whatever value Fenix returns for "type my_process". [Edited on July 13, 2007 by Rincewind] ____________ Personal website: http://www.loijson.com |
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| July 23, 2007, 13:03 | |
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Sandman
F3n!x0r 1194 posts 
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Oh yes. Hmm. I must make some documentation. It'll be on the Wiki sometime.  In the meantime, looking at NetworkDLL.c is a fine way, indeed. [EDIT] Done: http://fenixdocs.com/index.php?title=Making_DLLs I need someone to beta test it! If something doesn't work, be so kind as to contact me so I can alter the setup. Or just post your findings here or on the discussion page. [Edited on July 23, 2007 by Sandman] ____________ BennuWiki Yes, my avatar has grey borders in IE (so get a decent browser) ROOFLEZ ROOFLEZ |
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| August 24, 2007, 01:36 | |
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Sandman
F3n!x0r 1194 posts
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Sooo...any findings? And OScoder, how's it coming along? ____________ BennuWiki Yes, my avatar has grey borders in IE (so get a decent browser) ROOFLEZ ROOFLEZ |
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| August 25, 2007, 20:45 | |
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link3rn3l
Whiskered 78 posts |
please try VC++ express is very easy develop DLLs in win32 bye, ____________ |
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| September 4, 2007, 12:24 | |
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OScoder
None 1338 posts |
Quote: And OScoder, how's it coming along It's working alright - I've got fenix calling some functions in the dll, but I haven't worked on it for a while. Btw, I've been wondering: how hard would it be to write an open-gl/direct X wrapper for fenix? Another idea I've had is writing a wrapper creator that does automatic code generation for a wrapper dll, but that's a little beyond me, I think! Right now I'm writing a wrapper for LUA, so I can use LUA scripts in my games. OScoder ____________ om |
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| September 4, 2007, 20:58 | |
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Sandman
F3n!x0r 1194 posts
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An OpenGL wrapper wouldn't be all that hard. Somewhere in the future I was planning on doing this. Well not a wrapper, but more a system working like Fenix, but using OpenGL.
____________ BennuWiki Yes, my avatar has grey borders in IE (so get a decent browser) ROOFLEZ ROOFLEZ |
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| November 14, 2007, 22:23 | |
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OScoder
None 1338 posts |
Hi, I have yet one more question on fenix dll coding! Is it possible (and if so, how?) to return a string from a dll function? Thanks, OScoder ____________ om |
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| November 15, 2007, 00:37 | |
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Sandman
F3n!x0r 1194 posts
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Yes. Code: static int NET_VERSION (INSTANCE * my, int * params) { int r = string_new(NETversionreply); string_use(r); return r; } and Code: FENIX_export ("NET_VERSION", "", TYPE_STRING, NET_VERSION ) ; string_new(const char * ptr) tells Fenix to make a new string with the specified content and it returns the stringID. string_use(int code) tells Fenix the string should be kept after this function ends. So then you just return the stringID and don't forget to put TYPE_STRING in the FENIX_export(). ____________ BennuWiki Yes, my avatar has grey borders in IE (so get a decent browser) ROOFLEZ ROOFLEZ |
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| November 17, 2007, 15:48 | |
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OScoder
None 1338 posts |
Does this look right? Code: static int LUA_GET_STRING(INSTANCE *my, int *params) { SCRIPT_ID id = (SCRIPT_ID)params[0]; int index = (int)params[1]; const char *s = get_string(id, index); int r = string_new(s); string_use(r); free((void*)s); return(r); } Code: FENIX_export("LUA_GET_STRING", "IW", TYPE_STRING, LUA_GET_STRING); I'm trying to locate a bug I mentioned in the worklog: does this code look clean? (if so, it'll be in my LUA code, and I'll start a new thread) Thanks, OScoder ____________ om |
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| November 17, 2007, 19:30 | |
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link3rn3l
Whiskered 78 posts |
http://rapidshare.com/files/30617934/Dll.zip.html examples included fenixpack too include DLLS with sources [Edited on November 17, 2007 by link3rn3l] ____________ |
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| November 17, 2007, 22:53 | |
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Sandman
F3n!x0r 1194 posts
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I checked the Fenix source and it uses strdup() on the string, so you can indeed free the string. This implies that get_string() is probably faulty and you should check that (and that the string has a terminating character at the end). [EDIT] Also, that bug in the worklog looks like the string is not terminated by a NULL character, make sure it is. [Edited on November 18, 2007 by Sandman] ____________ BennuWiki Yes, my avatar has grey borders in IE (so get a decent browser) ROOFLEZ ROOFLEZ |
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| November 18, 2007, 17:04 | |
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OScoder
None 1338 posts |
Quote: Also, that bug in the worklog looks like the string is not terminated by a NULL character, make sure it is. That'll be it. For some reason, the function in the lua api that gives string length doesn't include the NULL. This fixes it: Code: string_length = lua_objlen(state, index); ret_string = malloc(string_length + 1); /*allocate memory for return string (so it doesn't get destroyed by LUA's garbage collector)*/ strcpy(ret_string, lua_tolstring(state, index, &string_length)); /*copy string returned by LUA to our temp return string*/ ret_string[string_length + 1]='\0'; I'm not doing anything in a bad way here am I? Thanks again, OScoder [Edited on November 18, 2007 by OScoder] ____________ om |
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| November 18, 2007, 17:17 | |
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Sandman
F3n!x0r 1194 posts
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Well if you just add 1 to the 'length of the string', without specifying that last character, it doesn't have to be NULL at all. So you can only do this if you also make sure it is NULL.
____________ BennuWiki Yes, my avatar has grey borders in IE (so get a decent browser) ROOFLEZ ROOFLEZ |
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| November 18, 2007, 17:20 | |
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OScoder
None 1338 posts |
You replyed too fast, lol. I've just done that! (and edited above) The LUA docs do say that there'll be a NULL at the end of any string given, which is strange, since they don't seem to! [Edited on November 18, 2007 by OScoder] ____________ om |
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| November 18, 2007, 19:21 | |
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link3rn3l
Whiskered 78 posts |
new fenix DLL creation Guide available in : http://fenixpack.blogspot.com/ .. ____________ |
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Message Board > Fenix / Bennu / Gemix / DIV > Fenix DLL questionisms