/***************************************************************************
 -  file: audio.c
 -  description: this file contains audio related functions
                            -------------------
    begin                : Jan 22, 2003
    copyright            : Sam Hart, Jesse Andrews (C) 2003
    email                : tuxtype-dev@tux4kids.net

    Modified for use in tuxmath by David Bruce - 2006.
    email                : <davidstuartbruce@gmail.com>
                           <tuxmath-devel@lists.sourceforge.net>
***************************************************************************/

/***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************/


#include "tuxmath.h"
#include "options.h"   //Needed for Opts_UsingSound()
#include "titlescreen.h"

Mix_Music *music;

void playsound(int snd)
{
#ifndef NOSOUND
  if (Opts_UsingSound())
    Mix_PlayChannel(-1, sounds[snd], 0);
#endif
}

Mix_Music *defaultMusic = NULL; // holds music for audioMusicLoad/unload



/* audioMusicLoad attempts to load and play the music file 
 * Note: loops == -1 means forever
 */
void audioMusicLoad(char *musicFilename, int loops)
{
  if (!Opts_UsingSound())
  {
    return;
  }

  audioMusicUnload(); // make sure defaultMusic is clear
  defaultMusic = LoadMusic(musicFilename);
  Mix_PlayMusic(defaultMusic, loops);
}


/* audioMusicUnload attempts to unload any music data that was
 * loaded using the audioMusicLoad function
 */
void audioMusicUnload( void ) {
  if (!Opts_UsingSound()) return;

  if ( defaultMusic )
    Mix_FreeMusic( defaultMusic );

  defaultMusic=NULL;
}

/* audioMusicPlay attempts to play the passed music data. 
 * if a music file was loaded using the audioMusicLoad
 * it will be stopped and unloaded
 * Note: loops == -1 means forever
 */
void audioMusicPlay( Mix_Music *musicData, int loops ) { 
  if (!Opts_UsingSound()) return;

  audioMusicUnload();        
  Mix_PlayMusic( musicData, loops );
}