From:	leger_v AT bluewin DOT ch
Newsgroups:	comp.os.msdos.djgpp
Subject:	demo.c allegro question
Date:	Thu, 09 Apr 1998 11:48:16 +0200
Organization:	Swisscom AG, the blue window
Lines:	15
Message-ID:	<352C995F.286B@bluewin.ch>
NNTP-Posting-Host:	sio22pub78.bluewin.ch
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hello,

I've just looked at the source code of the demo which comes with the
allegro game library. I noticed that for the svga modes, we can't 
use the retrace function. And we use the timer. There is a loop
that I don't understand : while(game_time > 0 ) {
			     move_everyone();
                             game_time--;
			  }
			  draw_screen();
The timer is set with a frequency of 6400/SCREEN_W and of course
increment game_time at this rate. I don't understand
how this part of the program set the speed of the game. The game_time--
doesn't depend on the speed of the computer ?
Please help me. Thanks.

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