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154 lines
4 KiB
C++
154 lines
4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/mutex.h"
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#include "common/str.h"
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#include "common/stream.h"
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#include "common/textconsole.h"
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#include "audio/mixer.h"
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#include "audio/audiostream.h"
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#include "engines/grim/savegame.h"
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#include "engines/grim/emi/sound/track.h"
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#include "engines/grim/grim.h"
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#include "engines/grim/set.h"
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namespace Grim {
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SoundTrack::SoundTrack() {
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_stream = nullptr;
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_handle = nullptr;
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_paused = false;
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_positioned = false;
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_balance = 0;
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_volume = Audio::Mixer::kMaxChannelVolume;
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_disposeAfterPlaying = DisposeAfterUse::YES;
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_sync = 0;
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_fadeMode = FadeNone;
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_fade = 1.0f;
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_attenuation = 1.0f;
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// Initialize to a plain sound for now
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_soundType = Audio::Mixer::kPlainSoundType;
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}
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SoundTrack::~SoundTrack() {
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if (_stream && (_disposeAfterPlaying == DisposeAfterUse::NO || !_handle))
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delete _stream;
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}
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Common::String SoundTrack::getSoundName() {
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return _soundName;
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}
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void SoundTrack::setSoundName(const Common::String &name) {
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_soundName = name;
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}
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void SoundTrack::setVolume(int volume) {
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_volume = MIN(volume, static_cast<int>(Audio::Mixer::kMaxChannelVolume));
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if (_handle) {
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g_system->getMixer()->setChannelVolume(*_handle, (byte)getEffectiveVolume());
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}
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}
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void SoundTrack::setPosition(bool positioned, const Math::Vector3d &pos) {
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_positioned = positioned;
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_pos = pos;
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updatePosition();
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}
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void SoundTrack::updatePosition() {
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if (!_positioned)
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return;
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Set *set = g_grim->getCurrSet();
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Set::Setup *setup = set->getCurrSetup();
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Math::Vector3d cameraPos = setup->_pos;
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Math::Vector3d vector = _pos - cameraPos;
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float distance = vector.getMagnitude();
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if (_volume == 0) {
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_attenuation = 0.0f;
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} else {
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_attenuation = MAX(0.0f, 1.0f - distance / (_volume * 100.0f / Audio::Mixer::kMaxChannelVolume));
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}
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Math::Matrix4 worldRot = setup->_rot;
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Math::Vector3d relPos = (_pos - setup->_pos);
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Math::Vector3d p(relPos);
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p = p * worldRot.getRotation();
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float angle = atan2(p.x(), p.z());
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float pan = sin(angle);
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_balance = (int)(pan * 127.0f);
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if (_handle) {
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g_system->getMixer()->setChannelBalance(*_handle, _balance);
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g_system->getMixer()->setChannelVolume(*_handle, (byte)getEffectiveVolume());
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}
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}
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void SoundTrack::setBalance(int balance) {
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if (_positioned)
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return;
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_balance = balance;
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if (_handle) {
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g_system->getMixer()->setChannelBalance(*_handle, _balance);
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}
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}
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bool SoundTrack::play() {
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if (_stream) {
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if (isPlaying()) {
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warning("sound: %s already playing, don't start again!", _soundName.c_str());
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return true;
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}
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// If _disposeAfterPlaying is NO, the destructor will take care of the stream.
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g_system->getMixer()->playStream(_soundType, _handle, _stream, -1, (byte)getEffectiveVolume(), _balance, _disposeAfterPlaying);
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return true;
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}
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return false;
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}
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void SoundTrack::pause() {
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_paused = !_paused;
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if (_stream) {
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g_system->getMixer()->pauseHandle(*_handle, _paused);
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}
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}
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void SoundTrack::stop() {
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if (_handle)
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g_system->getMixer()->stopHandle(*_handle);
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}
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void SoundTrack::setFade(float fade) {
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_fade = fade;
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if (_handle) {
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g_system->getMixer()->setChannelVolume(*_handle, (byte)getEffectiveVolume());
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}
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}
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int SoundTrack::getEffectiveVolume() {
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return _volume * _attenuation * _fade;
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}
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} // end of namespace Grim
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