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/* ResidualVM - A 3D game interpreter
*
* ResidualVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the AUTHORS
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "engines/myst3/ambient.h"
#include "engines/myst3/database.h"
#include "engines/myst3/myst3.h"
#include "engines/myst3/state.h"
#include "engines/myst3/sound.h"
namespace Myst3 {
Ambient::Ambient(Myst3Engine *vm) :
_vm(vm),
_cueStartTick(0) {
_cueSheet.reset();
}
Ambient::~Ambient() {
}
void Ambient::playCurrentNode(uint32 volume, uint32 fadeOutDelay) {
if (!fadeOutDelay) fadeOutDelay = 1;
uint32 node = _vm->_state->getLocationNode();
uint32 room = _vm->_state->getLocationRoom();
uint32 age = _vm->_state->getLocationAge();
// Load sound descriptors
loadNode(node, room, age);
// Adjust volume
scaleVolume(volume);
// Play sounds
applySounds(fadeOutDelay);
}
void Ambient::scaleVolume(uint32 volume) {
for (uint i = 0; i < _sounds.size(); i++)
_sounds[i].volume = _sounds[i].volume * volume / 100;
}
void Ambient::loadNode(uint32 node, uint32 room, uint32 age) {
_sounds.clear();
_cueSheet.reset();
if (node == 0)
node = _vm->_state->getLocationNode();
_vm->_state->setAmbiantPreviousFadeOutDelay(_vm->_state->getAmbiantFadeOutDelay());
_scriptAge = age;
_scriptRoom = room;
_vm->runAmbientScripts(node);
if (_sounds.size() == 0)
_vm->runAmbientScripts(32766);
}
void Ambient::addSound(uint32 id, int32 volume, int32 heading, int32 headingAngle, int32 u1, int32 fadeOutDelay) {
if (!volume)
volume = 1;
AmbientSound s;
if (volume >= 0) {
s.volume = volume;
s.volumeFlag = 0;
} else {
s.volume = -volume;
s.volumeFlag = 1;
}
s.id = id;
s.heading = heading;
s.headingAngle = headingAngle;
s.u1 = u1;
s.fadeOutDelay = fadeOutDelay;
_sounds.push_back(s);
}
void Ambient::setCueSheet(uint32 id, int32 volume, int32 heading, int32 headingAngle) {
_cueSheet.reset();
if (volume >= 0) {
_cueSheet.volume = volume;
_cueSheet.volumeFlag = 0;
} else {
_cueSheet.volume = -volume;
_cueSheet.volumeFlag = 1;
}
_cueSheet.id = id;
_cueSheet.heading = heading;
_cueSheet.headingAngle = headingAngle;
}
uint16 Ambient::delayForCue(uint32 id) {
const AmbientCue &cue = _vm->_db->getAmbientCue(id);
// Return a delay in frames inside the bounds
return _vm->_rnd->getRandomNumberRng(cue.minFrames, cue.maxFrames);
}
uint32 Ambient::nextCueSound(uint32 id) {
static uint32 lastId = 0;
const AmbientCue &cue = _vm->_db->getAmbientCue(id);
// Only one sound, no way it can be different from the previous one
if (cue.tracks.size() == 1) {
return cue.tracks[0];
}
// Make sure the new random sound is different from the last one
uint32 soundId;
do {
uint index = _vm->_rnd->getRandomNumber(cue.tracks.size() - 1);
soundId = cue.tracks[index];
} while (soundId == lastId);
lastId = soundId;
return soundId;
}
void Ambient::updateCue() {
if (_cueSheet.id) {
if (!_cueStartTick) {
_cueStartTick = _vm->_state->getTickCount() + delayForCue(_cueSheet.id);
}
if (_vm->_state->getTickCount() >= _cueStartTick) {
_cueStartTick = 0;
uint32 soundId = nextCueSound(_cueSheet.id);
uint heading;
if (_cueSheet.heading == 32766) {
heading = _vm->_rnd->getRandomNumberRng(0, 359);
} else {
heading = _cueSheet.heading;
}
_vm->_sound->playCue(soundId, _cueSheet.volume, heading, _cueSheet.headingAngle);
}
}
}
void Ambient::applySounds(uint32 fadeOutDelay) {
// Reset the random sounds
_cueStartTick = 0;
if (!_cueSheet.id) {
_vm->_sound->stopCue(fadeOutDelay);
}
// Age all sounds
_vm->_sound->age();
// Setup the selected sounds
for (uint i = 0; i < _sounds.size(); i++) {
const AmbientSound &sound = _sounds[i];
bool existingChannel;
SoundChannel *channel = _vm->_sound->getChannelForSound(sound.id, kAmbient, &existingChannel);
// The sound was already playing
if (!existingChannel) {
uint volume = 0;
// if (sound.volumeFlag) // TODO: Used in the original
volume = sound.volume;
channel->play(sound.id, volume, sound.heading, sound.headingAngle, true, kAmbient);
}
if (channel->_playing) {
channel->fade(sound.volume, sound.heading, sound.headingAngle, fadeOutDelay);
channel->_age = 0;
channel->_ambientFadeOutDelay = sound.fadeOutDelay;
}
}
// Fade out old playing ambient sounds
_vm->_sound->fadeOutOldSounds(fadeOutDelay);
}
} // End of namespace Myst3
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