1 // soundmanager.cxx -- Wraps the SimGear OpenAl sound manager class
3 // Copyright (C) 2001 Curtis L. Olson - http://www.flightgear.org/~curt
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24 #include <simgear/sound/soundmgr_openal.hxx>
26 #include "soundmanager.hxx"
27 #include "Main/globals.hxx"
28 #include "Main/fg_props.hxx"
33 #ifdef ENABLE_AUDIO_SUPPORT
35 * Listener class that monitors the sim state.
37 class Listener : public SGPropertyChangeListener
40 Listener(FGSoundManager *wrapper) : _wrapper(wrapper) {}
41 virtual void valueChanged (SGPropertyNode * node);
44 FGSoundManager* _wrapper;
47 void Listener::valueChanged(SGPropertyNode * node)
49 _wrapper->activate(node->getBoolValue());
52 FGSoundManager::FGSoundManager()
53 : _is_initialized(false),
55 _listener(new Listener(this))
59 FGSoundManager::~FGSoundManager()
63 void FGSoundManager::init()
65 _sound_working = fgGetNode("/sim/sound/working");
66 _sound_enabled = fgGetNode("/sim/sound/enabled");
67 _volume = fgGetNode("/sim/sound/volume");
68 _device_name = fgGetNode("/sim/sound/device-name");
70 _currentView = fgGetNode("sim/current-view");
71 _viewPosLon = fgGetNode("sim/current-view/viewer-lon-deg");
72 _viewPosLat = fgGetNode("sim/current-view/viewer-lat-deg");
73 _viewPosElev = fgGetNode("sim/current-view/viewer-elev-ft");
75 _velocityNorthFPS = fgGetNode("velocities/speed-north-fps", true);
76 _velocityEastFPS = fgGetNode("velocities/speed-east-fps", true);
77 _velocityDownFPS = fgGetNode("velocities/speed-down-fps", true);
79 _viewXoffset = _currentView->getNode("x-offset-m", true);
80 _viewYoffset = _currentView->getNode("y-offset-m", true);
81 _viewZoffset = _currentView->getNode("z-offset-m", true);
83 SGPropertyNode_ptr scenery_loaded = fgGetNode("sim/sceneryloaded", true);
84 scenery_loaded->addChangeListener(_listener.get());
89 void FGSoundManager::shutdown()
91 SGPropertyNode_ptr scenery_loaded = fgGetNode("sim/sceneryloaded", true);
92 scenery_loaded->removeChangeListener(_listener.get());
94 SGSoundMgr::shutdown();
97 void FGSoundManager::reinit()
99 _is_initialized = false;
101 if (_is_initialized && !_sound_working->getBoolValue())
103 // shutdown sound support
108 if (!_sound_working->getBoolValue())
113 update_device_list();
115 select_device(_device_name->getStringValue());
116 SGSoundMgr::reinit();
117 _is_initialized = true;
119 activate(fgGetBool("sim/sceneryloaded", true));
122 void FGSoundManager::activate(bool State)
128 SGSoundMgr::activate();
133 void FGSoundManager::update_device_list()
135 std::vector <const char*>devices = get_available_devices();
136 for (unsigned int i=0; i<devices.size(); i++) {
137 SGPropertyNode *p = fgGetNode("/sim/sound/devices/device", i, true);
138 p->setStringValue(devices[i]);
143 bool FGSoundManager::stationaryView() const
145 // this is an ugly hack to decide if the *viewer* is stationary,
146 // since we don't model the viewer velocity directly.
147 return (_viewXoffset->getDoubleValue() == 0.0) &&
148 (_viewYoffset->getDoubleValue() == 0.0) &&
149 (_viewZoffset->getDoubleValue() == 0.0);
152 // Update sound manager and propagate property values,
153 // since the sound manager doesn't read any properties itself.
154 // Actual sound update is triggered by the subsystem manager.
155 void FGSoundManager::update(double dt)
157 if (_is_initialized && _sound_working->getBoolValue())
159 bool enabled = _sound_enabled->getBoolValue();
160 if (enabled != _enabled)
170 SGGeod viewPosGeod(SGGeod::fromDegFt(_viewPosLon->getDoubleValue(),
171 _viewPosLat->getDoubleValue(),
172 _viewPosElev->getDoubleValue()));
173 SGVec3d cartPos = SGVec3d::fromGeod(viewPosGeod);
175 set_position(cartPos, viewPosGeod);
177 SGQuatd viewOrientation;
178 for (int i=0; i<4; ++i) {
179 viewOrientation[i] = _currentView->getChild("raw-orientation", i, true)->getDoubleValue();
182 set_orientation( viewOrientation );
184 SGVec3d velocity(SGVec3d::zeros());
185 if (!stationaryView()) {
186 velocity = SGVec3d(_velocityNorthFPS->getDoubleValue(),
187 _velocityEastFPS->getDoubleValue(),
188 _velocityDownFPS->getDoubleValue() );
191 set_velocity( velocity );
193 set_volume(_volume->getFloatValue());
194 SGSoundMgr::update(dt);
199 #endif // ENABLE_AUDIO_SUPPORT