sound.c

   1 #include "tennix.h"
   2 #include "sound.h"
   3
   4 static char datadir[MAXPATHLEN];
   5
   6 void init_sound( const char *data_dir) {
   7     strcpy( datadir, data_dir);
   8
   9     if( Mix_OpenAudio( 44100, AUDIO_S16SYS, 2, 1024) < 0) {
  10         fprintf( stderr, "Error initializing SDL_mixer: %s\n", Mix_GetError());
  11     }
  12 }
  13
  14 void play_sample( const char* filename, unsigned char channel, int loop) {
  15     static Mix_Chunk* chunks[CH_MAX] = { 0 };
  16     char fn[MAXPATHLEN];
  17
  18     strcpy( fn, datadir);
  19     strcat( fn, filename);
  20
  21     if( chunks[channel] != NULL) {
  22         Mix_FreeChunk( chunks[channel]);
  23         chunks[channel] = NULL;
  24     }
  25
  26     chunks[channel] = Mix_LoadWAV( fn);
  27     if( chunks[channel] != NULL) {
  28         Mix_PlayChannel( channel, chunks[channel], loop);
  29     } else {
  30         fprintf( stderr, "Error: %s\n", Mix_GetError());
  31     }
  32 }
  33
  34 void fade_out( unsigned char channel) {
  35     Mix_FadeOutChannel( channel, FADE_OUT_MS);
  36 }
  37
  38 void sound_ground() {
  39     const char* sounds[] = { "ground1.wav", "ground2.wav" };
  40     play_sample( sounds[rand()%2], CH_GROUND, 0);
  41 }
  42
  43 void sound_racket( unsigned char powershot) {
  44     const char* sounds[] = { "racket1.wav", "racket2.wav" };
  45     if( powershot) {
  46         play_sample( "powershot.wav", CH_RACKET, 0);
  47     } else {
  48         play_sample( sounds[rand()%2], CH_RACKET, 0);
  49     }
  50 }
  51
  52 void sound_audience() {
  53     play_sample( "audience.wav", CH_AUDIENCE, -1);
  54 }
  55
  56 void sound_applause() {
  57     play_sample( "applause.wav", CH_APPLAUSE, 0);
  58 }
  59
  60 void sound_applause_stop() {
  61     fade_out( CH_APPLAUSE);
  62 }
  63