diff options
Diffstat (limited to 'engines/zvision/scripting/sidefx/music_node.cpp')
| -rw-r--r-- | engines/zvision/scripting/sidefx/music_node.cpp | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/engines/zvision/scripting/sidefx/music_node.cpp b/engines/zvision/scripting/sidefx/music_node.cpp new file mode 100644 index 0000000000..0351867dd9 --- /dev/null +++ b/engines/zvision/scripting/sidefx/music_node.cpp @@ -0,0 +1,190 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * 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 "common/scummsys.h" + +#include "zvision/scripting/sidefx/music_node.h" + +#include "zvision/zvision.h" +#include "zvision/scripting/script_manager.h" +#include "zvision/graphics/render_manager.h" +#include "zvision/sound/zork_raw.h" + +#include "common/stream.h" +#include "common/file.h" +#include "audio/decoders/wave.h" + + +namespace ZVision { + +MusicNode::MusicNode(ZVision *engine, uint32 key, Common::String &filename, bool loop, int8 volume) + : SideFX(engine, key, SIDEFX_AUDIO) { + _loop = loop; + _volume = volume; + _crossfade = false; + _crossfade_target = 0; + _crossfade_time = 0; + _attenuate = 0; + _pantrack = false; + _pantrack_X = 0; + _sub = NULL; + + Audio::RewindableAudioStream *audioStream; + + if (filename.contains(".wav")) { + Common::File *file = new Common::File(); + if (_engine->getSearchManager()->openFile(*file, filename)) { + audioStream = Audio::makeWAVStream(file, DisposeAfterUse::YES); + } + } else { + audioStream = makeRawZorkStream(filename, _engine); + } + + _stereo = audioStream->isStereo(); + + if (_loop) { + Audio::LoopingAudioStream *loopingAudioStream = new Audio::LoopingAudioStream(audioStream, 0, DisposeAfterUse::YES); + _engine->_mixer->playStream(Audio::Mixer::kPlainSoundType, &_handle, loopingAudioStream, -1, _volume); + } else { + _engine->_mixer->playStream(Audio::Mixer::kPlainSoundType, &_handle, audioStream, -1, _volume); + } + + if (_key != StateKey_NotSet) + _engine->getScriptManager()->setStateValue(_key, 1); + + Common::String subname = filename; + subname.setChar('s', subname.size() - 3); + subname.setChar('u', subname.size() - 2); + subname.setChar('b', subname.size() - 1); + + if (_engine->getSearchManager()->hasFile(subname)) + _sub = new Subtitle(_engine, subname); +} + +MusicNode::~MusicNode() { + _engine->_mixer->stopHandle(_handle); + if (_key != StateKey_NotSet) + _engine->getScriptManager()->setStateValue(_key, 2); + if (_sub) + delete _sub; + debug(1, "MusicNode: %d destroyed\n", _key); +} + +void MusicNode::setPanTrack(int16 pos) { + if (!_stereo) { + _pantrack = true; + _pantrack_X = pos; + setVolume(_volume); + } +} + +void MusicNode::unsetPanTrack() { + _pantrack = false; + setVolume(_volume); +} + +void MusicNode::setFade(int32 time, uint8 target) { + _crossfade_target = target; + _crossfade_time = time; + _crossfade = true; +} + +bool MusicNode::process(uint32 deltaTimeInMillis) { + if (! _engine->_mixer->isSoundHandleActive(_handle)) + return stop(); + else { + uint8 _newvol = _volume; + + if (_crossfade) { + if (_crossfade_time > 0) { + if ((int32)deltaTimeInMillis > _crossfade_time) + deltaTimeInMillis = _crossfade_time; + _newvol += floor(((float)(_crossfade_target - _newvol) / (float)_crossfade_time)) * (float)deltaTimeInMillis; + _crossfade_time -= deltaTimeInMillis; + } else { + _crossfade = false; + _newvol = _crossfade_target; + } + } + + if (_pantrack || _volume != _newvol) + setVolume(_newvol); + + if (_sub) + _sub->process(_engine->_mixer->getSoundElapsedTime(_handle) / 100); + } + return false; +} + +void MusicNode::setVolume(uint8 new_volume) { + if (_pantrack) { + int cur_x = _engine->getScriptManager()->getStateValue(StateKey_ViewPos); + cur_x -= _pantrack_X; + int32 _width = _engine->getRenderManager()->getBkgSize().x; + if (cur_x < (-_width) / 2) + cur_x += _width; + else if (cur_x >= _width / 2) + cur_x -= _width; + + float norm = (float)cur_x / ((float)_width / 2.0); + float lvl = fabs(norm); + if (lvl > 0.5) + lvl = (lvl - 0.5) * 1.7; + else + lvl = 1.0; + + float bal = sin(-norm * 3.1415926) * 127.0; + + if (_engine->_mixer->isSoundHandleActive(_handle)) { + _engine->_mixer->setChannelBalance(_handle, bal); + _engine->_mixer->setChannelVolume(_handle, new_volume * lvl); + } + } else { + if (_engine->_mixer->isSoundHandleActive(_handle)) { + _engine->_mixer->setChannelBalance(_handle, 0); + _engine->_mixer->setChannelVolume(_handle, new_volume); + } + } + + _volume = new_volume; +} + +PanTrackNode::PanTrackNode(ZVision *engine, uint32 key, uint32 slot, int16 pos) + : SideFX(engine, key, SIDEFX_PANTRACK) { + _slot = slot; + + SideFX *fx = _engine->getScriptManager()->getSideFX(slot); + if (fx && fx->getType() == SIDEFX_AUDIO) { + MusicNode *mus = (MusicNode *)fx; + mus->setPanTrack(pos); + } +} + +PanTrackNode::~PanTrackNode() { + SideFX *fx = _engine->getScriptManager()->getSideFX(_slot); + if (fx && fx->getType() == SIDEFX_AUDIO) { + MusicNode *mus = (MusicNode *)fx; + mus->unsetPanTrack(); + } +} + +} // End of namespace ZVision |