sound.c

   1 #include <SDL.h>
   2 #include <SDL_mixer.h>
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <unistd.h>
   6
   7 #include "args.h"
   8 #include "common.h"
   9 #include "config.h"
  10 #include "sound.h"
  11
  12
  13 static Mix_Music *music[NUM_TUNES];
  14 static int music_volume[NUM_TUNES] = {88,88,88};
  15 static Mix_Chunk *wav[NUM_SOUNDS];
  16
  17 int audio_rate;
  18 Uint16 audio_format;
  19 int audio_channels;
  20
  21 char *add_data_path(char *);
  22 char *wav_file[] = {
  23         "bang.wav"
  24 };
  25
  26 char *tune_file[] = {
  27         "magic.mod",
  28         "getzznew.mod",
  29         "4est_fulla3s.mod"
  30 };
  31
  32 // Return 1 if the sound is ready to roll, and 0 if not.
  33 int
  34 init_sound() {
  35         int i;
  36         char *s;
  37
  38         // Initialise output with SDL_mixer
  39         if (Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, AUDIO_S16, MIX_DEFAULT_CHANNELS, 4096) < 0) {
  40         fprintf(stderr, "Couldn't open SDL_mixer audio: %s\n", SDL_GetError());
  41         return 0;
  42         }
  43
  44         // Preload all the tunes into memory
  45         for (i=0; i<NUM_TUNES; i++) {
  46                 s = add_data_path(tune_file[i]);
  47                 if(s) {
  48                         music[i] = Mix_LoadMUS(s);
  49                         if(!music[i]) printf("Failed to load %s.\n", s);
  50                         free(s);
  51                 }
  52         }
  53
  54         // Preload all the wav files into memory
  55         for (i=0; i<NUM_SOUNDS; i++) {
  56                 s = add_data_path(wav_file[i]);
  57                 if(s) {
  58                         wav[i] = Mix_LoadWAV(s);
  59                         free(s);
  60                 }
  61         }
  62
  63         return 1;
  64 }
  65
  66 void
  67 play_sound(int i)  {
  68         if(!opt_sound) return;
  69         Mix_PlayChannel(-1, wav[i], 0);
  70 }
  71
  72 int playing=-1;
  73
  74
  75 void
  76 play_tune(int i) {
  77         if(!opt_sound) {
  78                 return;
  79         }
  80         if (playing == i) {
  81                 return;
  82         }
  83         if (playing) {
  84                 Mix_FadeOutMusic(2500);
  85         }
  86         if(i == TUNE_GAMEPLAY) {
  87                 Mix_FadeInMusic(music[i],-1,2000);
  88                 Mix_VolumeMusic(music_volume[i]);
  89         }
  90
  91         playing = i;
  92 }
  93
  94
  95 int tune_paused=0;
  96
  97 void
  98 pause_tune() {
  99         if(!opt_sound) {
 100                 return;
 101         }
 102         if(playing == TUNE_GAMEPLAY && !tune_paused) {
 103                 Mix_PauseMusic();
 104                 tune_paused = 1;
 105         }
 106 }
 107
 108 void
 109 resume_tune() {
 110         if(!opt_sound) {
 111                 return;
 112         }
 113         if(playing == TUNE_GAMEPLAY && tune_paused) {
 114                 Mix_ResumeMusic();
 115                 tune_paused = 0;
 116         }
 117 }
 118
 119 /*
 120  *
 121  * The init_sound() routine is called first.
 122  * The play_sound() routine is called with the index number of the sound we wish to play.
 123  * The play_tune() routine is called with the index number of the tune we wish to play.
 124  *
 125  */