src/Environment/environment_mgr.cxx

   1 // environment-mgr.cxx -- manager for natural environment information.
   2 //
   3 // Written by David Megginson, started February 2002.
   4 //
   5 // Copyright (C) 2002  David Megginson - david@megginson.com
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 2 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  20
  21 #ifdef HAVE_CONFIG_H
  22 #  include <config.h>
  23 #endif
  24
  25 #include <cstring>
  26
  27 #include <simgear/constants.h>
  28 #include <simgear/debug/logstream.hxx>
  29 #include <simgear/scene/sky/sky.hxx>
  30 #include <simgear/scene/model/particles.hxx>
  31 #include <simgear/structure/event_mgr.hxx>
  32
  33 #include <Main/main.hxx>
  34 #include <Main/renderer.hxx>
  35 #include <Main/fg_props.hxx>
  36 #include <FDM/flight.hxx>
  37
  38 #include "environment.hxx"
  39 #include "environment_mgr.hxx"
  40 #include "environment_ctrl.hxx"
  41 #include "realwx_ctrl.hxx"
  42 #include "fgclouds.hxx"
  43 #include "precipitation_mgr.hxx"
  44 #include "ridge_lift.hxx"
  45 #include "terrainsampler.hxx"
  46 #include "Airports/simple.hxx"
  47 #include "gravity.hxx"
  48
  49 class FG3DCloudsListener : public SGPropertyChangeListener {
  50 public:
  51   FG3DCloudsListener( FGClouds * fgClouds );
  52   virtual ~FG3DCloudsListener();
  53
  54   virtual void valueChanged (SGPropertyNode * node);
  55
  56 private:
  57   FGClouds * _fgClouds;
  58   SGPropertyNode_ptr _enableNode;
  59 };
  60
  61 FG3DCloudsListener::FG3DCloudsListener( FGClouds * fgClouds ) :
  62     _fgClouds( fgClouds )
  63 {
  64   _enableNode = fgGetNode( "/sim/rendering/clouds3d-enable", true );
  65   _enableNode->addChangeListener( this );
  66
  67   valueChanged( _enableNode );
  68 }
  69
  70 FG3DCloudsListener::~FG3DCloudsListener()
  71 {
  72   _enableNode->removeChangeListener( this );
  73 }
  74
  75 void FG3DCloudsListener::valueChanged( SGPropertyNode * node )
  76 {
  77   _fgClouds->set_3dClouds( _enableNode->getBoolValue() );
  78 }
  79
  80 FGEnvironmentMgr::FGEnvironmentMgr () :
  81   _environment(new FGEnvironment()),
  82   fgClouds(new FGClouds()),
  83   _cloudLayersDirty(true),
  84   _altitude_n(fgGetNode("/position/altitude-ft", true)),
  85   _longitude_n(fgGetNode( "/position/longitude-deg", true )),
  86   _latitude_n( fgGetNode( "/position/latitude-deg", true )),
  87   _3dCloudsEnableListener(new FG3DCloudsListener(fgClouds) ),
  88   _sky(globals->get_renderer()->getSky())
  89 {
  90   set_subsystem("controller", Environment::LayerInterpolateController::createInstance( fgGetNode("/environment/config", true ) ));
  91   set_subsystem("realwx", Environment::RealWxController::createInstance( fgGetNode("/environment/realwx", true ) ), 1.0 );
  92
  93   set_subsystem("precipitation", new FGPrecipitationMgr);
  94   set_subsystem("terrainsampler", Environment::TerrainSampler::createInstance( fgGetNode("/environment/terrain", true ) ));
  95   set_subsystem("ridgelift", new FGRidgeLift);
  96 }
  97
  98 FGEnvironmentMgr::~FGEnvironmentMgr ()
  99 {
 100   SGSubsystem * subsys;
 101
 102   subsys = get_subsystem( "ridgelift" );
 103   remove_subsystem( "ridgelift" );
 104   delete subsys;
 105
 106   subsys = get_subsystem( "terrainsampler" );
 107   remove_subsystem( "terrainsampler" );
 108   delete subsys;
 109
 110   subsys = get_subsystem( "precipitation" );
 111   remove_subsystem("precipitation");
 112   delete subsys;
 113
 114   subsys = get_subsystem("realwx");
 115   remove_subsystem("realwx");
 116   delete subsys;
 117
 118   subsys = get_subsystem("controller");
 119   remove_subsystem("controller");
 120   delete subsys;
 121
 122   delete fgClouds;
 123   delete _environment;
 124
 125   delete _3dCloudsEnableListener;
 126 }
 127
 128 void
 129 FGEnvironmentMgr::init ()
 130 {
 131   SG_LOG( SG_ENVIRONMENT, SG_INFO, "Initializing environment subsystem");
 132   SGSubsystemGroup::init();
 133   fgClouds->Init();
 134
 135   // FIXME: is this really part of the environment_mgr?
 136   // Initialize the longitude, latitude and altitude to the initial position
 137   // of the aircraft so that the atmospheric properties (pressure, temperature
 138   // and density) can be initialized accordingly.
 139   _altitude_n->setDoubleValue(fgGetDouble("/sim/presets/altitude-ft"));
 140   _longitude_n->setDoubleValue(fgGetDouble("/sim/presets/longitude-deg"));
 141   _latitude_n->setDoubleValue(fgGetDouble("/sim/presets/latitude-deg"));
 142
 143   globals->get_event_mgr()->addTask("updateClosestAirport", this,
 144                                     &FGEnvironmentMgr::updateClosestAirport, 30 );
 145 }
 146
 147 void
 148 FGEnvironmentMgr::shutdown()
 149 {
 150   globals->get_event_mgr()->removeTask("updateClosestAirport");
 151 }
 152
 153 void
 154 FGEnvironmentMgr::reinit ()
 155 {
 156   SG_LOG( SG_ENVIRONMENT, SG_INFO, "Reinitializing environment subsystem");
 157   SGSubsystemGroup::reinit();
 158 }
 159
 160 void
 161 FGEnvironmentMgr::bind ()
 162 {
 163   SGSubsystemGroup::bind();
 164   _environment->Tie( fgGetNode("/environment", true ) );
 165
 166   _tiedProperties.setRoot( fgGetNode( "/environment", true ) );
 167
 168   _tiedProperties.Tie( "effective-visibility-m", _sky,
 169           &SGSky::get_visibility );
 170
 171   _tiedProperties.Tie("rebuild-layers", fgClouds,
 172           &FGClouds::get_update_event,
 173           &FGClouds::set_update_event);
 174
 175 //  _tiedProperties.Tie("turbulence/use-cloud-turbulence", &sgEnviro,
 176 //          &SGEnviro::get_turbulence_enable_state,
 177 //          &SGEnviro::set_turbulence_enable_state);
 178
 179   for (int i = 0; i < MAX_CLOUD_LAYERS; i++) {
 180       SGPropertyNode_ptr layerNode = fgGetNode("/environment/clouds",true)->getChild("layer", i, true );
 181
 182       _tiedProperties.Tie( layerNode->getNode("span-m",true), this, i,
 183               &FGEnvironmentMgr::get_cloud_layer_span_m,
 184               &FGEnvironmentMgr::set_cloud_layer_span_m);
 185
 186       _tiedProperties.Tie( layerNode->getNode("elevation-ft",true), this, i,
 187               &FGEnvironmentMgr::get_cloud_layer_elevation_ft,
 188               &FGEnvironmentMgr::set_cloud_layer_elevation_ft);
 189
 190       _tiedProperties.Tie( layerNode->getNode("thickness-ft",true), this, i,
 191               &FGEnvironmentMgr::get_cloud_layer_thickness_ft,
 192               &FGEnvironmentMgr::set_cloud_layer_thickness_ft);
 193
 194       _tiedProperties.Tie( layerNode->getNode("transition-ft",true), this, i,
 195               &FGEnvironmentMgr::get_cloud_layer_transition_ft,
 196               &FGEnvironmentMgr::set_cloud_layer_transition_ft);
 197
 198       _tiedProperties.Tie( layerNode->getNode("coverage",true), this, i,
 199               &FGEnvironmentMgr::get_cloud_layer_coverage,
 200               &FGEnvironmentMgr::set_cloud_layer_coverage);
 201
 202       _tiedProperties.Tie( layerNode->getNode("coverage-type",true), this, i,
 203               &FGEnvironmentMgr::get_cloud_layer_coverage_type,
 204               &FGEnvironmentMgr::set_cloud_layer_coverage_type);
 205
 206       _tiedProperties.Tie( layerNode->getNode( "visibility-m",true), this, i,
 207               &FGEnvironmentMgr::get_cloud_layer_visibility_m,
 208               &FGEnvironmentMgr::set_cloud_layer_visibility_m);
 209
 210       _tiedProperties.Tie( layerNode->getNode( "alpha",true), this, i,
 211               &FGEnvironmentMgr::get_cloud_layer_maxalpha,
 212               &FGEnvironmentMgr::set_cloud_layer_maxalpha);
 213   }
 214
 215   _tiedProperties.setRoot( fgGetNode("/sim/rendering", true ) );
 216
 217   _tiedProperties.Tie( "clouds3d-density", _sky,
 218           &SGSky::get_3dCloudDensity,
 219           &SGSky::set_3dCloudDensity);
 220
 221   _tiedProperties.Tie("clouds3d-vis-range", _sky,
 222           &SGSky::get_3dCloudVisRange,
 223           &SGSky::set_3dCloudVisRange);
 224
 225   _tiedProperties.Tie("clouds3d-impostor-range", _sky,
 226           &SGSky::get_3dCloudImpostorDistance,
 227           &SGSky::set_3dCloudImpostorDistance);
 228
 229   _tiedProperties.Tie("clouds3d-lod1-range", _sky,
 230           &SGSky::get_3dCloudLoD1Range,
 231           &SGSky::set_3dCloudLoD1Range);
 232
 233   _tiedProperties.Tie("clouds3d-lod2-range", _sky,
 234           &SGSky::get_3dCloudLoD2Range,
 235           &SGSky::set_3dCloudLoD2Range);
 236
 237   _tiedProperties.Tie("clouds3d-wrap", _sky,
 238           &SGSky::get_3dCloudWrap,
 239           &SGSky::set_3dCloudWrap);
 240
 241   _tiedProperties.Tie("clouds3d-use-impostors", _sky,
 242           &SGSky::get_3dCloudUseImpostors,
 243           &SGSky::set_3dCloudUseImpostors);
 244
 245 //  _tiedProperties.Tie("lightning-enable", &sgEnviro,
 246 //          &SGEnviro::get_lightning_enable_state,
 247 //          &SGEnviro::set_lightning_enable_state);
 248
 249 }
 250
 251 void
 252 FGEnvironmentMgr::unbind ()
 253 {
 254   _tiedProperties.Untie();
 255   _environment->Untie();
 256   SGSubsystemGroup::unbind();
 257 }
 258
 259 void
 260 FGEnvironmentMgr::update (double dt)
 261 {
 262   SGSubsystemGroup::update(dt);
 263
 264   _environment->set_elevation_ft( _altitude_n->getDoubleValue() );
 265
 266   simgear::Particles::setWindFrom( _environment->get_wind_from_heading_deg(),
 267                                    _environment->get_wind_speed_kt() );
 268   if( _cloudLayersDirty ) {
 269     _cloudLayersDirty = false;
 270     fgClouds->set_update_event( fgClouds->get_update_event()+1 );
 271   }
 272
 273
 274   fgSetDouble( "/environment/gravitational-acceleration-mps2",
 275     Environment::Gravity::instance()->getGravity(SGGeod::fromDegFt(
 276       _longitude_n->getDoubleValue(),
 277       _latitude_n->getDoubleValue(),
 278       _altitude_n->getDoubleValue()
 279   )));
 280 }
 281
 282 void
 283 FGEnvironmentMgr::updateClosestAirport()
 284 {
 285   SG_LOG(SG_ENVIRONMENT, SG_DEBUG, "FGEnvironmentMgr::update: updating closest airport");
 286
 287   SGGeod pos = globals->get_aircraft_position();
 288   FGAirport * nearestAirport = FGAirport::findClosest(pos, 100.0);
 289   if( nearestAirport == NULL )
 290   {
 291     SG_LOG(SG_ENVIRONMENT,SG_WARN,"FGEnvironmentMgr::update: No airport within 100NM range");
 292   }
 293   else
 294   {
 295     const string currentId = fgGetString("/sim/airport/closest-airport-id", "");
 296     if (currentId != nearestAirport->ident())
 297     {
 298       SG_LOG(SG_ENVIRONMENT, SG_INFO, "FGEnvironmentMgr::updateClosestAirport: selected:" << nearestAirport->ident());
 299       fgSetString("/sim/airport/closest-airport-id",
 300                   nearestAirport->ident().c_str());
 301     }
 302   }
 303
 304 }
 305
 306 FGEnvironment
 307 FGEnvironmentMgr::getEnvironment () const
 308 {
 309   return *_environment;
 310 }
 311
 312 FGEnvironment
 313 FGEnvironmentMgr::getEnvironment (double lat, double lon, double alt) const
 314 {
 315   // Always returns the same environment
 316   // for now; we'll make it interesting
 317   // later.
 318   FGEnvironment env = *_environment;
 319   env.set_elevation_ft(alt);
 320   return env;
 321 }
 322
 323 FGEnvironment
 324 FGEnvironmentMgr::getEnvironment(const SGGeod& aPos) const
 325 {
 326   // Always returns the same environment
 327   // for now; we'll make it interesting
 328   // later.
 329   FGEnvironment env = *_environment;
 330   env.set_elevation_ft(aPos.getElevationFt());
 331   return env;
 332
 333 }
 334
 335 double
 336 FGEnvironmentMgr::get_cloud_layer_span_m (int index) const
 337 {
 338   return _sky->get_cloud_layer(index)->getSpan_m();
 339 }
 340
 341 void
 342 FGEnvironmentMgr::set_cloud_layer_span_m (int index, double span_m)
 343 {
 344   _sky->get_cloud_layer(index)->setSpan_m(span_m);
 345 }
 346
 347 double
 348 FGEnvironmentMgr::get_cloud_layer_elevation_ft (int index) const
 349 {
 350   return _sky->get_cloud_layer(index)->getElevation_m() * SG_METER_TO_FEET;
 351 }
 352
 353 void
 354 FGEnvironmentMgr::set_cloud_layer_elevation_ft (int index, double elevation_ft)
 355 {
 356   FGEnvironment env = *_environment;
 357   env.set_elevation_ft(elevation_ft);
 358
 359   _sky->get_cloud_layer(index)
 360     ->setElevation_m(elevation_ft * SG_FEET_TO_METER);
 361
 362   _sky->get_cloud_layer(index)
 363     ->setSpeed(env.get_wind_speed_kt() * 0.5151);       // 1 kt = 0.5151 m/s
 364
 365   _sky->get_cloud_layer(index)
 366     ->setDirection(env.get_wind_from_heading_deg());
 367 }
 368
 369 double
 370 FGEnvironmentMgr::get_cloud_layer_thickness_ft (int index) const
 371 {
 372   return _sky->get_cloud_layer(index)->getThickness_m() * SG_METER_TO_FEET;
 373 }
 374
 375 void
 376 FGEnvironmentMgr::set_cloud_layer_thickness_ft (int index, double thickness_ft)
 377 {
 378   _sky->get_cloud_layer(index)
 379     ->setThickness_m(thickness_ft * SG_FEET_TO_METER);
 380 }
 381
 382 double
 383 FGEnvironmentMgr::get_cloud_layer_transition_ft (int index) const
 384 {
 385   return _sky->get_cloud_layer(index)->getTransition_m() * SG_METER_TO_FEET;
 386 }
 387
 388 void
 389 FGEnvironmentMgr::set_cloud_layer_transition_ft (int index,
 390                                                  double transition_ft)
 391 {
 392   _sky->get_cloud_layer(index)
 393     ->setTransition_m(transition_ft * SG_FEET_TO_METER);
 394 }
 395
 396 const char *
 397 FGEnvironmentMgr::get_cloud_layer_coverage (int index) const
 398 {
 399   return _sky->get_cloud_layer(index)->getCoverageString().c_str();
 400 }
 401
 402 void
 403 FGEnvironmentMgr::set_cloud_layer_coverage (int index,
 404                                             const char * coverage_name)
 405 {
 406   if( _sky->get_cloud_layer(index)->getCoverageString() == coverage_name )
 407     return;
 408
 409   _sky->get_cloud_layer(index)->setCoverageString(coverage_name);
 410   _cloudLayersDirty = true;
 411 }
 412
 413 int
 414 FGEnvironmentMgr::get_cloud_layer_coverage_type (int index) const
 415 {
 416   return _sky->get_cloud_layer(index)->getCoverage();
 417 }
 418
 419 double
 420 FGEnvironmentMgr::get_cloud_layer_visibility_m (int index) const
 421 {
 422     return _sky->get_cloud_layer(index)->getVisibility_m();
 423 }
 424
 425 void
 426 FGEnvironmentMgr::set_cloud_layer_visibility_m (int index, double visibility_m)
 427 {
 428     _sky->get_cloud_layer(index)->setVisibility_m(visibility_m);
 429 }
 430
 431 double
 432 FGEnvironmentMgr::get_cloud_layer_maxalpha (int index ) const
 433 {
 434     return _sky->get_cloud_layer(index)->getMaxAlpha();
 435 }
 436
 437 void
 438 FGEnvironmentMgr::set_cloud_layer_maxalpha (int index, double maxalpha)
 439 {
 440     _sky->get_cloud_layer(index)->setMaxAlpha(maxalpha);
 441 }
 442
 443 void
 444 FGEnvironmentMgr::set_cloud_layer_coverage_type (int index, int type )
 445 {
 446   if( type < 0 || type >= SGCloudLayer::SG_MAX_CLOUD_COVERAGES ) {
 447     SG_LOG(SG_ENVIRONMENT,SG_WARN,"Unknown cloud layer type " << type << " ignored" );
 448     return;
 449   }
 450
 451   if( static_cast<SGCloudLayer::Coverage>(type) == _sky->get_cloud_layer(index)->getCoverage() )
 452     return;
 453
 454   _sky->get_cloud_layer(index)->setCoverage(static_cast<SGCloudLayer::Coverage>(type));
 455   _cloudLayersDirty = true;
 456 }
 457
 458
 459 // end of environment-mgr.cxx