src/sound.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2000 Bill Kendrick <bill@newbreedsoftware.com>
   5 //  Copyright (C) 2004 Duong-Khang NGUYEN <neoneurone@users.sf.net>
   6 //
   7 //  This program is free software; you can redistribute it and/or
   8 //  modify it under the terms of the GNU General Public License
   9 //  as published by the Free Software Foundation; either version 2
  10 //  of the License, or (at your option) any later version.
  11 //
  12 //  This program is distributed in the hope that it will be useful,
  13 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 //  GNU General Public License for more details.
  16 //
  17 //  You should have received a copy of the GNU General Public License
  18 //  along with this program; if not, write to the Free Software
  19 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20
  21 #include "defines.h"
  22 #include "globals.h"
  23 #include "sound.h"
  24 #include "setup.h"
  25
  26 /*global variable*/
  27 bool use_sound;           /* handle sound on/off menu and command-line option */
  28 bool use_music;           /* handle music on/off menu and command-line option */
  29 bool audio_device;        /* != 0: available and initialized */
  30 int current_music;
  31
  32 char * soundfilenames[NUM_SOUNDS] = {
  33                                        "/sounds/jump.wav",
  34                                        "/sounds/bigjump.wav",
  35                                        "/sounds/skid.wav",
  36                                        "/sounds/distro.wav",
  37                                        "/sounds/herring.wav",
  38                                        "/sounds/brick.wav",
  39                                        "/sounds/hurt.wav",
  40                                        "/sounds/squish.wav",
  41                                        "/sounds/fall.wav",
  42                                        "/sounds/ricochet.wav",
  43                                        "/sounds/bump-upgrade.wav",
  44                                        "/sounds/upgrade.wav",
  45                                        "/sounds/excellent.wav",
  46                                        "/sounds/coffee.wav",
  47                                        "/sounds/shoot.wav",
  48                                        "/sounds/lifeup.wav",
  49                                        "/sounds/stomp.wav",
  50                                        "/sounds/kick.wav"
  51                                     };
  52
  53
  54 #include <SDL_mixer.h>
  55
  56 Mix_Chunk * sounds[NUM_SOUNDS];
  57 Mix_Music * herring_song = 0;
  58 Mix_Music * current_song = 0;
  59
  60 /* --- OPEN THE AUDIO DEVICE --- */
  61
  62 int open_audio (int frequency, Uint16 format, int channels, int chunksize)
  63 {
  64   /* if success we reserved some channels and register panning effects */
  65   if (Mix_OpenAudio( frequency, format, channels, chunksize ) == 0)
  66     {
  67       if (Mix_ReserveChannels( SOUND_RESERVED_CHANNELS )
  68                             != SOUND_RESERVED_CHANNELS )
  69         {
  70           DEBUG_MSG( "Warning: open_audio could'nt reserve channels" );
  71         }
  72
  73       /* prepare the spanning effects, no error checking */
  74       Mix_SetPanning( SOUND_LEFT_SPEAKER, 230, 24 );
  75       Mix_SetPanning( SOUND_RIGHT_SPEAKER, 24, 230 );
  76       return 0;
  77     }
  78   else
  79     {
  80       return -1;
  81     }
  82 }
  83
  84
  85 /* --- CLOSE THE AUDIO DEVICE --- */
  86
  87 void close_audio( void )
  88 {
  89   if (audio_device) {
  90     Mix_UnregisterAllEffects( SOUND_LEFT_SPEAKER );
  91     Mix_UnregisterAllEffects( SOUND_RIGHT_SPEAKER );
  92     Mix_CloseAudio();
  93   }
  94 }
  95
  96
  97 /* --- LOAD A SOUND --- */
  98
  99 Mix_Chunk * load_sound(const std::string& file)
 100 {
 101   Mix_Chunk * snd;
 102
 103   snd = Mix_LoadWAV(file.c_str());
 104
 105   if ((snd == NULL) && audio_device)
 106     st_abort("Can't load", file);
 107
 108   return(snd);
 109 }
 110
 111
 112 /* --- LOAD A SONG --- */
 113
 114 Mix_Music * load_song(const std::string& file)
 115 {
 116   if(!audio_device)
 117     return (Mix_Music*) ~0;
 118
 119   Mix_Music* song = Mix_LoadMUS(file.c_str());
 120   return song;
 121 }
 122
 123
 124 /* --- PLAY A SOUND ON LEFT OR RIGHT OR CENTER SPEAKER --- */
 125
 126 void play_sound(Mix_Chunk * snd, enum Sound_Speaker whichSpeaker)
 127 {
 128   /* this won't call the function if the user has disabled sound
 129    * either via menu or via command-line option
 130    */
 131   if (use_sound && audio_device)
 132     {
 133       Mix_PlayChannel( whichSpeaker, snd, 0);
 134
 135       /* prepare for panning effects for next call */
 136       /* warning: currently, I do not check for errors here */
 137       switch (whichSpeaker) {
 138         case SOUND_LEFT_SPEAKER:
 139           Mix_SetPanning( SOUND_LEFT_SPEAKER, 230, 24 );
 140           break;
 141         case SOUND_RIGHT_SPEAKER:
 142           Mix_SetPanning( SOUND_RIGHT_SPEAKER, 24, 230 );
 143           break;
 144         default:  // keep the compiler happy
 145           break;
 146       }
 147     }
 148 }
 149
 150
 151 void free_chunk(Mix_Chunk *chunk)
 152 {
 153   if (chunk != NULL)
 154     {
 155       Mix_FreeChunk( chunk );
 156       chunk = NULL;
 157     }
 158 }
 159
 160 void halt_music(void)
 161 {
 162   if (!use_music || !audio_device)
 163     return;
 164
 165   Mix_HaltMusic();
 166   current_song = 0;
 167 }
 168
 169
 170 void play_music(Mix_Music *music)
 171 {
 172   if (!audio_device)
 173     return;
 174   if(music == current_song)
 175     return;
 176
 177   if (use_music && Mix_PlayMusic(music, -1) < 0)
 178     st_abort("Couldn't play music: ", Mix_GetError());
 179
 180   current_song = music;
 181 }
 182
 183
 184 void free_music(Mix_Music *music)
 185 {
 186   if(!audio_device)
 187     return;
 188
 189   Mix_FreeMusic( music );
 190 }
 191
 192 void enable_music(bool enable)
 193 {
 194   if(!audio_device)
 195     return;
 196
 197   use_music = enable;
 198   if(!use_music)
 199     Mix_HaltMusic();
 200   else
 201     Mix_PlayMusic(current_song, -1);
 202 }
 203