sound.c

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