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.
20 #include <simgear/sound/soundmgr_openal.hxx>
22 #include "soundmanager.hxx"
23 #include "Main/globals.hxx"
24 #include "Main/fg_props.hxx"
29 #ifdef ENABLE_AUDIO_SUPPORT
31 * Listener class that monitors the sim state.
33 class Listener : public SGPropertyChangeListener
36 Listener(FGSoundManager *wrapper) : _wrapper(wrapper) {}
37 virtual void valueChanged (SGPropertyNode * node);
40 FGSoundManager* _wrapper;
43 void Listener::valueChanged(SGPropertyNode * node)
45 _wrapper->activate(node->getBoolValue());
48 FGSoundManager::FGSoundManager()
49 : _is_initialized(false),
51 _listener(new Listener(this))
53 SGPropertyNode_ptr scenery_loaded = fgGetNode("sim/sceneryloaded", true);
54 scenery_loaded->addChangeListener(_listener);
57 FGSoundManager::~FGSoundManager()
61 void FGSoundManager::init()
63 _sound_working = fgGetNode("/sim/sound/working");
64 _sound_enabled = fgGetNode("/sim/sound/enabled");
65 _volume = fgGetNode("/sim/sound/volume");
66 _device_name = fgGetNode("/sim/sound/device-name");
68 _currentView = fgGetNode("sim/current-view");
69 _viewPosLon = fgGetNode("sim/current-view/viewer-lon-deg");
70 _viewPosLat = fgGetNode("sim/current-view/viewer-lat-deg");
71 _viewPosElev = fgGetNode("sim/current-view/viewer-elev-ft");
73 _velocityNorthFPS = fgGetNode("velocities/speed-north-fps", true);
74 _velocityEastFPS = fgGetNode("velocities/speed-east-fps", true);
75 _velocityDownFPS = fgGetNode("velocities/speed-down-fps", true);
77 _viewXoffset = _currentView->getNode("x-offset-m", true);
78 _viewYoffset = _currentView->getNode("y-offset-m", true);
79 _viewZoffset = _currentView->getNode("z-offset-m", true);
84 void FGSoundManager::reinit()
86 _is_initialized = false;
88 if (_is_initialized && !_sound_working->getBoolValue())
90 // shutdown sound support
95 if (!_sound_working->getBoolValue())
100 update_device_list();
102 select_device(_device_name->getStringValue());
103 SGSoundMgr::reinit();
104 _is_initialized = true;
106 activate(fgGetBool("sim/sceneryloaded", true));
109 void FGSoundManager::activate(bool State)
115 SGSoundMgr::activate();
120 void FGSoundManager::update_device_list()
122 std::vector <const char*>devices = get_available_devices();
123 for (unsigned int i=0; i<devices.size(); i++) {
124 SGPropertyNode *p = fgGetNode("/sim/sound/devices/device", i, true);
125 p->setStringValue(devices[i]);
130 bool FGSoundManager::stationaryView() const
132 // this is an ugly hack to decide if the *viewer* is stationary,
133 // since we don't model the viewer velocity directly.
134 return (_viewXoffset->getDoubleValue() == 0.0) &&
135 (_viewYoffset->getDoubleValue() == 0.0) &&
136 (_viewZoffset->getDoubleValue() == 0.0);
139 // Update sound manager and propagate property values,
140 // since the sound manager doesn't read any properties itself.
141 // Actual sound update is triggered by the subsystem manager.
142 void FGSoundManager::update(double dt)
144 if (_is_initialized && _sound_working->getBoolValue())
146 bool enabled = _sound_enabled->getBoolValue();
147 if (enabled != _enabled)
157 SGGeod viewPosGeod(SGGeod::fromDegFt(_viewPosLon->getDoubleValue(),
158 _viewPosLat->getDoubleValue(),
159 _viewPosElev->getDoubleValue()));
160 SGVec3d cartPos = SGVec3d::fromGeod(viewPosGeod);
162 set_position(cartPos, viewPosGeod);
164 SGQuatd viewOrientation;
165 for (int i=0; i<4; ++i) {
166 viewOrientation[i] = _currentView->getChild("raw-orientation", i, true)->getDoubleValue();
169 set_orientation( viewOrientation );
171 SGVec3d velocity(SGVec3d::zeros());
172 if (!stationaryView()) {
173 velocity = SGVec3d(_velocityNorthFPS->getDoubleValue(),
174 _velocityEastFPS->getDoubleValue(),
175 _velocityDownFPS->getDoubleValue() );
178 set_velocity( velocity );
180 set_volume(_volume->getFloatValue());
181 SGSoundMgr::update(dt);
186 #endif // ENABLE_AUDIO_SUPPORT