khanat-opennel-code/code/nel/src/sound/music_sound_manager.cpp

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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdsound.h"
#include "nel/sound/audio_mixer_user.h"
#include "nel/sound/music_sound_manager.h"
#include "nel/sound/music_sound.h"
#include "nel/sound/music_source.h"
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using namespace NLMISC;
using namespace std;
namespace NLSOUND {
// ***************************************************************************
CMusicSoundManager::CMusicSoundManager()
{
_Enabled= true;
_CurrentMusicPlaying= NULL;
_PlayStartTime= INT_MIN;
_TimeConstraintEnabled= true;
}
// ***************************************************************************
void CMusicSoundManager::addMusicSourcePlaying(CMusicSource *musicSource)
{
if(!musicSource)
return;
_Sources.insert(musicSource);
}
// ***************************************************************************
void CMusicSoundManager::removeMusicSourcePlaying(CMusicSource *musicSource)
{
_Sources.erase(musicSource);
// may remove from the already played source
_AlreadyPlayedSources.erase(musicSource);
}
// ***************************************************************************
void CMusicSoundManager::update()
{
// if disabled, then just quit
if(!_Enabled)
return;
// update playing music each frame
NLMISC::TTime currentTime= CTime::getLocalTime();
CAudioMixerUser *mixer= CAudioMixerUser::instance();
// **** First, see if the current music played is cut-able
bool canPlayNewMusic= true;
// if the current played music has not ended his "minimum play time"
if(_TimeConstraintEnabled && _CurrentMusicPlaying && currentTime<=_PlayStartTime+_CurrentMusicPlaying->getMinimumPlayTime())
canPlayNewMusic= false;
// if cannot play new music, continue the current one
if(!canPlayNewMusic)
return;
// **** Search a music to replace the currently played one
CMusicSound *bestSound= _CurrentMusicPlaying;
CMusicSource *bestSource= NULL;
std::set<CMusicSource*>::iterator it= _Sources.begin();
// for all possibles music sources
for(;it!=_Sources.end();it++)
{
CMusicSource *src= *it;
CMusicSound *snd= dynamic_cast<CMusicSound*>(src->getSound());
// error, -> skip
if(!snd)
continue;
// If the source was already played (this is not a loop sound), skip it
// NB: It may be the current one but in this case it doesn't matters....
if(_AlreadyPlayedSources.find(src)!=_AlreadyPlayedSources.end())
continue;
// verify that this sound can be played again from the last time it has been played
if(_TimeConstraintEnabled && snd->LastStopTime>INT_MIN && currentTime<=snd->LastStopTime+snd->getTimeBeforeCanReplay())
continue;
// if no sound yet, take it
if(!bestSound)
{
bestSource= src;
bestSound= snd;
}
// else compare sound
else
{
// take the higher priority (priority value is inversed: 0 is the best priority)
if(snd->getPriority()<bestSound->getPriority())
{
bestSound= snd;
bestSource= src;
}
// else, other criteria
else if(snd->getPriority()==bestSound->getPriority())
{
/* if the new sound is not looping and the best is, consider the new sound as an "instant sound"
which is prioritary
*/
if(!snd->getLooping() && bestSound->getLooping())
{
bestSound= snd;
bestSource= src;
}
else if(snd->getLooping() == bestSound->getLooping())
{
// if the bestSound is the current sound played, prefer to not change the sound
if(bestSound!=_CurrentMusicPlaying)
{
/* NB: here, bestSound can be != from _CurrentMusicPlaying in the following cases:
- _CurrentMusicPlaying= NULL
- bestSound was assigned to a higher priority sound than _CurrentMusicPlaying
thereFore snd should be different from _CurrentMusicPlaying, since this one is of
lower priority...
*/
// compare name to avoid full random jitter
string snd0= CStringMapper::unmap(bestSound->getFileName());
string snd1= CStringMapper::unmap(snd->getFileName());
if(snd1>snd0)
{
bestSound= snd;
bestSource= src;
}
}
}
}
}
}
// if some new music found (different from the currently played one)
if(bestSound && bestSound!= _CurrentMusicPlaying)
{
// then launch the new music
startMusic(bestSound, bestSource);
}
// else, no new music found => if the music is currently playing
else if(_CurrentMusicPlaying)
{
// if the music has ended (and not loop), stop
if(_CurrentMusicPlaying->getLooping()==false && mixer->isMusicEnded())
{
// without fade (no need since ended)
stopMusic(false);
}
else
{
// verify that a source with this sound still exist. If not, we have to cut this sound too
bool found= false;
std::set<CMusicSource*>::iterator it= _Sources.begin();
for(;it!=_Sources.end();it++)
{
CMusicSource *src= *it;
CMusicSound *snd= dynamic_cast<CMusicSound*>(src->getSound());
if(snd && snd==_CurrentMusicPlaying)
{
found= true;
break;
}
}
// if not found, cut the music
if(!found)
{
// with fade
stopMusic(true);
}
}
}
}
// ***************************************************************************
void CMusicSoundManager::enable(bool enable)
{
// if disabled, stop any music (without any fade)
if(!enable)
stopMusic(false);
_Enabled= enable;
}
// ***************************************************************************
void CMusicSoundManager::startMusic(CMusicSound *newMs, CMusicSource *newSrc)
{
nlassert(newMs && newSrc);
// fade with the current. Take the min of new FadeIn and old FadeOut
sint32 xFade= newMs->getFadeInLength();
if(_CurrentMusicPlaying)
xFade= min(xFade, _CurrentMusicPlaying->getFadeOutLength());
// start play the new music, xFade with the old
CAudioMixerUser::instance()->playMusic(CStringMapper::unmap(newMs->getFileName()), uint(xFade), true, newMs->getLooping());
// Mark the old one as stopped
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if(_CurrentMusicPlaying)
{
_CurrentMusicPlaying->LastStopTime= CTime::getLocalTime();
}
// update markers
_CurrentMusicPlaying= newMs;
_PlayStartTime= CTime::getLocalTime();
// The source is played this time. Avoid replay it for infinite time if the player stay in the zone
if(!newMs->getLooping())
_AlreadyPlayedSources.insert(newSrc);
}
// ***************************************************************************
void CMusicSoundManager::stopMusic(bool allowFade)
{
if(_CurrentMusicPlaying)
{
// stop with or without fadeout
if(allowFade)
CAudioMixerUser::instance()->stopMusic(_CurrentMusicPlaying->getFadeOutLength());
else
CAudioMixerUser::instance()->stopMusic(0);
// Mark the last stop time
_CurrentMusicPlaying->LastStopTime= CTime::getLocalTime();
// no more music playing
_CurrentMusicPlaying= NULL;
}
}
} // NLSOUND