sound.c

   1 #include "sound.h"
   2 #include "config.h"
   3
   4 extern int sound_flag, music_flag;
   5
   6 #define TUNE_TITLE_PAGE         0
   7 #define TUNE_GAMEPLAY           1
   8 #define TUNE_HIGH_SCORE_ENTRY   2
   9 #define NUM_TUNES               3
  10
  11 #define SOUND_BANG              0
  12 #define NUM_SOUNDS              4
  13
  14 static Mix_Music *music[NUM_TUNES];
  15 static int music_volume[NUM_TUNES] = {128,128,128};
  16 static Mix_Chunk *wav[NUM_SOUNDS];
  17
  18 int audio_rate;
  19 Uint16 audio_format;
  20 int audio_channels;
  21
  22 char *add_path(char *);
  23 char *wav_file[] = {
  24         "sounds/booom.wav",
  25         "sounds/cboom.wav",
  26         "sounds/boom.wav",
  27         "sounds/bzboom.wav"
  28 };
  29
  30 char *tune_file[] = {
  31         "music/magic.mod",
  32         "music/getzznew.mod",
  33         "music/4est_fulla3s.mod"
  34 };
  35
  36 int
  37 init_sound() {
  38         // Return 1 if the sound is ready to roll, and 0 if not.
  39
  40         int i;
  41         debug(printf ("Initialise sound\n"));
  42
  43         // Initialise output with SDL_mixer
  44         if (Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, AUDIO_S16, MIX_DEFAULT_CHANNELS, 4096) < 0) {
  45         fprintf(stderr, "Couldn't open SDL_mixer audio: %s\n", SDL_GetError());
  46         return 0;
  47         }
  48
  49         debug(
  50                         // What kind of sound did we get?  Ah who cares. As long as it can play
  51                         // some basic bangs and simple music.
  52                         Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
  53                         printf("Opened audio at %d Hz %d bit %s\n", audio_rate,
  54                                 (audio_format&0xFF),
  55                                 (audio_channels > 1) ? "stereo" : "mono");
  56                         )
  57
  58         // Preload all the tunes into memory
  59         for (i=0; i<NUM_TUNES; i++) {
  60                 if (!(music[i] = Mix_LoadMUS(add_path(tune_file[i])))) {
  61                         printf ("Failed to load %s\n",add_path(tune_file[i]));
  62                 }
  63         }
  64
  65         // Preload all the wav files into memory
  66         for (i=0; i<NUM_SOUNDS; i++) {
  67                 wav[i] = Mix_LoadWAV(add_path(wav_file[i]));
  68         }
  69
  70         return 1;
  71 }
  72
  73 void
  74 play_sound(int i)  {
  75         if(!sound_flag) return;
  76         debug(printf ("play sound %d on first free channel\n",i));
  77         Mix_PlayChannel(-1, wav[i], 0);
  78 }/*}}}*/
  79
  80 int playing=-1;
  81
  82
  83 void
  84 play_tune(int i) {/*{{{*/
  85         if(!music_flag) return;
  86         if (playing==i)
  87         return;
  88         if (playing) {
  89                 Mix_FadeOutMusic(1500);
  90                 debug(printf("Stop playing %d\n",playing));
  91         }
  92         debug(
  93                         printf ("Play music %d\n",i);
  94                         printf ("volume %d\n",music_volume[i]);
  95                         )
  96         Mix_FadeInMusic(music[i],-1,2000);
  97         Mix_VolumeMusic(music_volume[i]);
  98
  99         playing = i;
 100 }
 101
 102 /*
 103  *
 104  * The init_sound() routine is called first.
 105  * The play_sound() routine is called with the index number of the sound we wish to play.
 106  * The play_tune() routine is called with the index number of the tune we wish to play.
 107  *
 108  */