Xref:	news2.mv.net comp.os.msdos.djgpp:4133
From:	Shawn Hargreaves <slh100 AT york DOT ac DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Using mikmod and allegro - how?
Date:	Mon, 20 May 1996 19:57:02 +0100
Organization:	The University of York, UK
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Message-ID:	<Pine.SGI.3.91.960520151414.15841A-100000@tower.york.ac.uk>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On 20 May 1996, David Nunez wrote:

> Could someone please post the solution to the using mikmod together
> with allegro problem? I followed the thread for a while, but
> then got totally lost. If it's possibly, could you please post it
> in a easy, step by step sort of way (I'm a bit new to all this).

I just tried this, and successfully hacked my Allegro demo game to play
MikMod music in the background. I ran into two problems:

Allegro and MikMod both define a SAMPLE struct. If you are using MikMod 
you obviously won't be using any of the sound code in Allegro, so you can 
just delete anything containing SAMPLE from allegro.h, or rename SAMPLE to 
ALLEGRO_SAMPLE or something like that.

Allegro sets the _crt0_startup_flags variable to make sure the non-moving 
sbrk() algorithm is in use. The MikMod example programs all set it to 
enable near pointers, and the two definitions of it conflict. Solution: 
delete it from the MikMod examples, and call _djgpp_nearptr_enable() at 
the start of the program instead.

btw. do I really need to set _crt0_startup_flags in Allegro? I am just 
setting it to _CRT0_FLAG_NONMOVE_SBRK, which is the default in any case, 
but the docs warn that it might change in the future. Do they really mean 
that, or would I be safe not bothering to set it?


/*
 *	Shawn Hargreaves.        Why is 'phonetic' spelt with a ph?
 *	Check out Allegro and FED on http://www.york.ac.uk/~slh100/
 */

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