From: aho450s AT nic DOT smsu DOT edu (Tony O'Bryan)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: I need help w/ Allegro sound playing
Date: Fri, 16 May 1997 13:47:36 GMT
Organization: Southwest Missouri State University
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References: <01bc61a5$123fcb00$55124f81 AT SamShahrani DOT ucs DOT indiana DOT edu>
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On 16 May 1997 03:00:54 GMT, "Sam Shahrani" <shahrani AT copper DOT ucs DOT indiana DOT edu>
wrote:

>Okay, I posted before, and here I go again.  After looking closely at the
>examples that come w/Allegro and some other source code, I still cannot
>figure out how to get my program to play a sound.  KEEP IN MIND that this
>program doesn't just need to play a sound.  It's a game so I want to be
>able to play the sound at a  given time (i.e. an enemy tank fires, the logo
>screen etc.)  I really need some help so if you could post some code,
>directions ANYTHING I would be incredibly grateful!!!! THANK YOU!!!


This is the smallest program I could write that properly demonstrates playing a
sound sample with Allegro.  You will have to adapt it to suit your needs.  This
is tested and known to work:

#include <stdio.h> /* needed for puts() */
#include <conio.h> /* needed for getch() */
#include <allegro.h> /* needed for all of Allegro's stuff */

int main(int argc,char **argv) /* <-- this should make John happy -hi John- */
  {
  SAMPLE                      *  SoundSample;

  argc = argc; /* get rid of compiler warning */

  /*
   * Checking the return value of allegro_init() isn't really necessary with
   * the current version since it always returns success.  It's a good idea
   * to check it anyway since a future version may return failure.
   */
  if (allegro_init() != 0)
    {
    puts("Can't initialize Allegro");
    return 1;
    }
  if (install_timer() != 0)
    {
    puts("Can't install timer");
    return 1;
    }
  if (install_sound(DIGI_AUTODETECT,MIDI_AUTODETECT,argv[0]) != 0)
    {
    puts("Can't install sound");
    return 1;
    }

  if ( (SoundSample = load_sample("sound.wav")) == NULL)
    {
    puts("Can't load sound sample");
    return 1;
    }
  /*
   * Play the sample at full volume (255), both speakers (128), the original
   * frequency (1000), loop the sound (1)
   */
  play_sample(SoundSample,255,128,1000,1);

  getch();
  allegro_exit(); /* You MUST have this before exiting to DOS */

  /*
   * Allegro automatically cleans up everything else before exiting
   */

  return 0;
  }