1 // $Id: sound_manager.cpp 2334 2005-04-04 16:26:14Z grumbel $
3 // SuperTux - A Jump'n Run
4 // Copyright (C) 2004 Matthias Braun <matze@braunis.de
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #include "audio/sound_manager.h"
28 #include "audio/musicref.h"
29 #include "moving_object.h"
30 #include "resources.h"
32 SoundManager::SoundManager()
33 : current_music(0), m_music_enabled(true) , m_sound_enabled(true),
38 SoundManager::~SoundManager()
40 for(Sounds::iterator i = sounds.begin(); i != sounds.end(); ++i) {
41 Mix_FreeChunk(i->second);
47 SoundManager::play_sound(const std::string& name)
49 if(!audio_device || !m_sound_enabled)
52 Mix_Chunk* chunk = preload_sound(name);
54 std::cerr << "Sound '" << name << "' not found.\n";
57 Mix_PlayChannel(-1, chunk, 0);
61 SoundManager::play_sound(const std::string& name,int loops)
63 if(!audio_device || !m_sound_enabled)
66 Mix_Chunk* chunk = preload_sound(name);
68 std::cerr << "Sound '" << name << "' not found.\n";
71 return Mix_PlayChannel(-1, chunk, loops);
75 SoundManager::play_sound(const std::string& sound, const MovingObject* object,
78 // TODO keep track of the object later and move the sound along with the
80 play_sound(sound, object->get_pos(), pos);
84 SoundManager::play_sound(const std::string& sound, const Vector& pos,
87 if(!audio_device || !m_sound_enabled)
90 Mix_Chunk* chunk = preload_sound(sound);
92 std::cerr << "Sound '" << sound << "' not found.\n";
96 // TODO make sure this formula is good
99 int loud = int(255.0/float(1600) * fabsf(distance));
103 int chan = Mix_PlayChannel(-1, chunk, 0);
106 Mix_SetDistance(chan, loud);
108 // very bad way to do this...
110 Mix_SetPanning(chan, 230, 24);
111 else if(distance < -100)
112 Mix_SetPanning(chan, 24, 230);
115 // Register a sound effect function - basti_
118 SoundManager::register_effect(int channel,Mix_EffectFunc_t f,
119 Mix_EffectDone_t d,void * arg) {
121 if(!audio_device || !m_sound_enabled)
123 Mix_RegisterEffect(channel,f,d,arg);
126 // Adjust the Volume of a channel "on line". Needs sizeof(float) static data.
128 #define __ATYPE__ signed short int
131 SoundManager::volume_adjust(int chan, void *stream, int len, void *udata) {
132 ((float *)udata)[1]=((float *)udata)[1]*0.95+
133 (((float *)udata)[0]-
134 ((float *)udata)[1])*0.05; // decay towards [0] - declick
135 float vol=((float*)udata)[1];
137 for (int i=0;i<len/2;i++)
138 ((__ATYPE__ *)stream)[i]=
139 ((__ATYPE__)(((signed short int *)stream)[i]*vol));
140 // FIXME: This should be audio-type dependant - how to do this correctly?
142 chan=0; // -Werror sucks
148 SoundManager::load_music(const std::string& file)
153 if(!exists_music(file)) {
154 std::stringstream msg;
155 msg << "Couldn't load musicfile '" << file << "': " << SDL_GetError();
156 throw std::runtime_error(msg.str());
159 std::map<std::string, MusicResource>::iterator i = musics.find(file);
160 assert(i != musics.end());
161 return MusicRef(& (i->second));
165 SoundManager::exists_music(const std::string& file)
170 // song already loaded?
171 std::map<std::string, MusicResource>::iterator i = musics.find(file);
172 if(i != musics.end()) {
176 Mix_Music* song = Mix_LoadMUS(file.c_str());
180 // insert into music list
181 std::pair<std::map<std::string, MusicResource>::iterator, bool> result =
183 std::make_pair<std::string, MusicResource> (file, MusicResource()));
184 MusicResource& resource = result.first->second;
185 resource.manager = this;
186 resource.music = song;
192 SoundManager::free_music(MusicResource* )
194 // TODO free music, currently we can't do this since SDL_mixer seems to have
195 // some bugs if you load/free alot of mod files.
199 SoundManager::play_music(const MusicRef& musicref, int loops)
204 if(musicref.music == 0 || current_music == musicref.music)
208 current_music->refcount--;
210 current_music = musicref.music;
211 current_music->refcount++;
214 Mix_PlayMusic(current_music->music, loops);
218 SoundManager::halt_music()
226 current_music->refcount--;
227 if(current_music->refcount == 0)
228 free_music(current_music);
234 SoundManager::enable_music(bool enable)
239 if(enable == m_music_enabled)
242 m_music_enabled = enable;
243 if(m_music_enabled == false) {
247 Mix_PlayMusic(current_music->music, -1);
252 SoundManager::enable_sound(bool enable)
257 m_sound_enabled = enable;
260 SoundManager::MusicResource::~MusicResource()
262 // don't free music buggy SDL_Mixer crashs for some mod files
263 // Mix_FreeMusic(music);
266 Mix_Chunk* SoundManager::preload_sound(const std::string& name)
271 Sounds::iterator i = sounds.find(name);
272 if(i != sounds.end()) {
276 std::string filename = "sounds/";
279 filename = get_resource_filename(filename);
281 Mix_Chunk* chunk = Mix_LoadWAV(filename.c_str());
283 sounds.insert(std::make_pair(name, chunk));