1 // globals.cxx -- Global state that needs to be shared among the sim modules
3 // Written by Curtis Olson, started July 2000.
5 // Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
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.
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.
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 Foundation,
19 // Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
27 #include <boost/foreach.hpp>
30 #include <simgear/structure/commands.hxx>
31 #include <simgear/misc/sg_path.hxx>
32 #include <simgear/misc/sg_dir.hxx>
33 #include <simgear/timing/sg_time.hxx>
34 #include <simgear/ephemeris/ephemeris.hxx>
35 #include <simgear/scene/material/matlib.hxx>
36 #include <simgear/structure/subsystem_mgr.hxx>
37 #include <simgear/structure/event_mgr.hxx>
38 #include <simgear/sound/soundmgr_openal.hxx>
39 #include <simgear/misc/ResourceManager.hxx>
40 #include <simgear/props/propertyObject.hxx>
41 #include <simgear/props/props_io.hxx>
42 #include <simgear/scene/model/modellib.hxx>
44 #include <Aircraft/controls.hxx>
45 #include <Airports/runways.hxx>
46 #include <ATCDCL/ATISmgr.hxx>
47 #include <Autopilot/route_mgr.hxx>
48 #include <GUI/FGFontCache.hxx>
50 #include <MultiPlayer/multiplaymgr.hxx>
51 #include <Scenery/scenery.hxx>
52 #include <Scenery/tilemgr.hxx>
53 #include <Navaids/navlist.hxx>
54 #include <Viewer/renderer.hxx>
55 #include <Viewer/viewmgr.hxx>
57 #include "globals.hxx"
60 #include "fg_props.hxx"
63 class AircraftResourceProvider : public simgear::ResourceProvider
66 AircraftResourceProvider() :
67 simgear::ResourceProvider(simgear::ResourceManager::PRIORITY_HIGH)
71 virtual SGPath resolve(const std::string& aResource, SGPath&) const
73 string_list pieces(sgPathBranchSplit(aResource));
74 if ((pieces.size() < 3) || (pieces.front() != "Aircraft")) {
75 return SGPath(); // not an Aircraft path
78 // test against the aircraft-dir property
79 const char* aircraftDir = fgGetString("/sim/aircraft-dir");
80 string_list aircraftDirPieces(sgPathBranchSplit(aircraftDir));
81 if (!aircraftDirPieces.empty() && (aircraftDirPieces.back() == pieces[1])) {
82 // current aircraft-dir matches resource aircraft
83 SGPath r(aircraftDir);
84 for (unsigned int i=2; i<pieces.size(); ++i) {
93 // try each aircraft dir in turn
94 std::string res(aResource, 9); // resource path with 'Aircraft/' removed
95 const string_list& dirs(globals->get_aircraft_paths());
96 string_list::const_iterator it = dirs.begin();
97 for (; it != dirs.end(); ++it) {
102 } // of aircraft path iteration
104 return SGPath(); // not found
108 class CurrentAircraftDirProvider : public simgear::ResourceProvider
111 CurrentAircraftDirProvider() :
112 simgear::ResourceProvider(simgear::ResourceManager::PRIORITY_HIGH)
116 virtual SGPath resolve(const std::string& aResource, SGPath&) const
118 const char* aircraftDir = fgGetString("/sim/aircraft-dir");
119 SGPath p(aircraftDir);
121 return p.exists() ? p : SGPath();
125 ////////////////////////////////////////////////////////////////////////
126 // Implementation of FGGlobals.
127 ////////////////////////////////////////////////////////////////////////
134 FGGlobals::FGGlobals() :
135 props( new SGPropertyNode ),
136 initial_state( NULL ),
137 locale( new FGLocale(props) ),
138 renderer( new FGRenderer ),
139 subsystem_mgr( new SGSubsystemMgr ),
140 event_mgr( new SGEventMgr ),
151 commands( SGCommandMgr::instance() ),
152 channel_options_list( NULL ),
153 initial_waypoints( NULL ),
156 fontcache ( new FGFontCache ),
158 haveUserSettings(false)
160 simgear::ResourceManager::instance()->addProvider(new AircraftResourceProvider);
161 simgear::ResourceManager::instance()->addProvider(new CurrentAircraftDirProvider);
162 simgear::PropertyObjectBase::setDefaultRoot(props);
164 positionLon = props->getNode("position/longitude-deg", true);
165 positionLat = props->getNode("position/latitude-deg", true);
166 positionAlt = props->getNode("position/altitude-ft", true);
168 viewLon = props->getNode("sim/current-view/viewer-lon-deg", true);
169 viewLat = props->getNode("sim/current-view/viewer-lat-deg", true);
170 viewAlt = props->getNode("sim/current-view/viewer-elev-ft", true);
172 orientPitch = props->getNode("orientation/pitch-deg", true);
173 orientHeading = props->getNode("orientation/heading-deg", true);
174 orientRoll = props->getNode("orientation/roll-deg", true);
178 FGGlobals::~FGGlobals()
180 // save user settings (unless already saved)
183 // The AIModels manager performs a number of actions upon
184 // Shutdown that implicitly assume that other subsystems
185 // are still operational (Due to the dynamic allocation and
186 // deallocation of AIModel objects. To ensure we can safely
187 // shut down all subsystems, make sure we take down the
188 // AIModels system first.
189 SGSubsystem* ai = globals->get_subsystem("ai-model");
192 subsystem_mgr->remove("ai-model");
195 subsystem_mgr->remove("aircraft-model");
196 subsystem_mgr->remove("tile-manager");
197 subsystem_mgr->remove("model-manager");
199 subsystem_mgr->shutdown();
200 subsystem_mgr->unbind();
201 delete subsystem_mgr;
202 subsystem_mgr = NULL; // important so ::get_subsystem returns NULL
213 delete channel_options_list;
214 delete initial_waypoints;
220 simgear::PropertyObjectBase::setDefaultRoot(NULL);
221 simgear::SGModelLib::resetPropertyRoot();
229 // set the fg_root path
230 void FGGlobals::set_fg_root (const std::string &root) {
232 fg_root = tmp.realpath();
234 // append /data to root if it exists
235 tmp.append( "data" );
236 tmp.append( "version" );
237 if ( tmp.exists() ) {
238 fgGetNode("BAD_FG_ROOT", true)->setStringValue(fg_root);
240 fgGetNode("GOOD_FG_ROOT", true)->setStringValue(fg_root);
241 SG_LOG(SG_GENERAL, SG_ALERT, "***\n***\n*** Warning: changing bad FG_ROOT/--fg-root to '"
242 << fg_root << "'\n***\n***");
245 // remove /sim/fg-root before writing to prevent hijacking
246 SGPropertyNode *n = fgGetNode("/sim", true);
247 n->removeChild("fg-root", 0, false);
248 n = n->getChild("fg-root", 0, true);
249 n->setStringValue(fg_root.c_str());
250 n->setAttribute(SGPropertyNode::WRITE, false);
252 simgear::ResourceManager::instance()->addBasePath(fg_root,
253 simgear::ResourceManager::PRIORITY_DEFAULT);
256 // set the fg_home path
257 void FGGlobals::set_fg_home (const std::string &home) {
259 fg_home = tmp.realpath();
262 PathList FGGlobals::get_data_paths() const
264 PathList r(additional_data_paths);
265 r.push_back(SGPath(fg_root));
269 PathList FGGlobals::get_data_paths(const std::string& suffix) const
272 BOOST_FOREACH(SGPath p, get_data_paths()) {
282 void FGGlobals::append_data_path(const SGPath& path)
284 if (!path.exists()) {
285 SG_LOG(SG_GENERAL, SG_WARN, "adding non-existant data path:" << path);
288 additional_data_paths.push_back(path);
291 SGPath FGGlobals::find_data_dir(const std::string& pathSuffix) const
293 BOOST_FOREACH(SGPath p, additional_data_paths) {
294 p.append(pathSuffix);
300 SGPath rootPath(fg_root);
301 rootPath.append(pathSuffix);
302 if (rootPath.exists()) {
306 SG_LOG(SG_GENERAL, SG_WARN, "dir not found in any data path:" << pathSuffix);
310 void FGGlobals::append_fg_scenery (const std::string &paths)
312 // fg_scenery.clear();
313 SGPropertyNode* sim = fgGetNode("/sim", true);
315 // find first unused fg-scenery property in /sim
317 while (sim->getChild("fg-scenery", propIndex) != NULL) {
321 BOOST_FOREACH(const SGPath& path, sgPathSplit( paths )) {
322 SGPath abspath(path.realpath());
323 if (!abspath.exists()) {
324 SG_LOG(SG_GENERAL, SG_WARN, "scenery path not found:" << abspath.str());
328 // check for duplicates
329 string_list::const_iterator ex = std::find(fg_scenery.begin(), fg_scenery.end(), abspath.str());
330 if (ex != fg_scenery.end()) {
331 SG_LOG(SG_GENERAL, SG_INFO, "skipping duplicate add of scenery path:" << abspath.str());
335 simgear::Dir dir(abspath);
336 SGPath terrainDir(dir.file("Terrain"));
337 SGPath objectsDir(dir.file("Objects"));
339 // this code used to add *either* the base dir, OR add the
340 // Terrain and Objects subdirs, but the conditional logic was commented
341 // out, such that all three dirs are added. Unfortunately there's
342 // no information as to why the change was made.
343 fg_scenery.push_back(abspath.str());
345 if (terrainDir.exists()) {
346 fg_scenery.push_back(terrainDir.str());
349 if (objectsDir.exists()) {
350 fg_scenery.push_back(objectsDir.str());
353 // insert a marker for FGTileEntry::load(), so that
354 // FG_SCENERY=A:B becomes list ["A/Terrain", "A/Objects", "",
355 // "B/Terrain", "B/Objects", ""]
356 fg_scenery.push_back("");
358 // make scenery dirs available to Nasal
359 SGPropertyNode* n = sim->getChild("fg-scenery", propIndex++, true);
360 n->setStringValue(abspath.str());
361 n->setAttribute(SGPropertyNode::WRITE, false);
362 } // of path list iteration
365 void FGGlobals::append_aircraft_path(const std::string& path)
367 SGPath dirPath(path);
368 if (!dirPath.exists()) {
369 SG_LOG(SG_GENERAL, SG_WARN, "aircraft path not found:" << path);
372 std::string abspath = dirPath.realpath();
374 unsigned int index = fg_aircraft_dirs.size();
375 fg_aircraft_dirs.push_back(abspath);
377 // make aircraft dirs available to Nasal
378 SGPropertyNode* sim = fgGetNode("/sim", true);
379 sim->removeChild("fg-aircraft", index, false);
380 SGPropertyNode* n = sim->getChild("fg-aircraft", index, true);
381 n->setStringValue(abspath);
382 n->setAttribute(SGPropertyNode::WRITE, false);
385 void FGGlobals::append_aircraft_paths(const std::string& path)
387 string_list paths = sgPathSplit(path);
388 for (unsigned int p = 0; p<paths.size(); ++p) {
389 append_aircraft_path(paths[p]);
393 SGPath FGGlobals::resolve_aircraft_path(const std::string& branch) const
395 return simgear::ResourceManager::instance()->findPath(branch);
398 SGPath FGGlobals::resolve_maybe_aircraft_path(const std::string& branch) const
400 return simgear::ResourceManager::instance()->findPath(branch);
403 SGPath FGGlobals::resolve_resource_path(const std::string& branch) const
405 return simgear::ResourceManager::instance()
406 ->findPath(branch, SGPath(fgGetString("/sim/aircraft-dir")));
410 FGGlobals::get_renderer () const
416 FGGlobals::get_subsystem_mgr () const
418 return subsystem_mgr;
422 FGGlobals::get_subsystem (const char * name)
424 if (!subsystem_mgr) {
428 return subsystem_mgr->get_subsystem(name);
432 FGGlobals::add_subsystem (const char * name,
433 SGSubsystem * subsystem,
434 SGSubsystemMgr::GroupType type,
437 subsystem_mgr->add(name, subsystem, type, min_time_sec);
441 FGGlobals::get_soundmgr () const
444 return (SGSoundMgr*) subsystem_mgr->get_subsystem("sound");
450 FGGlobals::get_event_mgr () const
456 FGGlobals::get_aircraft_position() const
458 return SGGeod::fromDegFt(positionLon->getDoubleValue(),
459 positionLat->getDoubleValue(),
460 positionAlt->getDoubleValue());
464 FGGlobals::get_aircraft_position_cart() const
466 return SGVec3d::fromGeod(get_aircraft_position());
469 void FGGlobals::get_aircraft_orientation(double& heading, double& pitch, double& roll)
471 heading = orientHeading->getDoubleValue();
472 pitch = orientPitch->getDoubleValue();
473 roll = orientRoll->getDoubleValue();
477 FGGlobals::get_view_position() const
479 return SGGeod::fromDegFt(viewLon->getDoubleValue(),
480 viewLat->getDoubleValue(),
481 viewAlt->getDoubleValue());
485 FGGlobals::get_view_position_cart() const
487 return SGVec3d::fromGeod(get_view_position());
490 // Save the current state as the initial state.
492 FGGlobals::saveInitialState ()
494 initial_state = new SGPropertyNode();
496 // copy properties which are READ/WRITEable - but not USERARCHIVEd or PRESERVEd
497 int checked = SGPropertyNode::READ+SGPropertyNode::WRITE+
498 SGPropertyNode::USERARCHIVE+SGPropertyNode::PRESERVE;
499 int expected = SGPropertyNode::READ+SGPropertyNode::WRITE;
500 if (!copyProperties(props, initial_state, expected, checked))
501 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
503 // delete various properties from the initial state, since we want to
504 // preserve their values even if doing a restore
505 // => Properties should now use the PRESERVE flag to protect their values
506 // on sim-reset. Remove some specific properties for backward compatibility.
507 SGPropertyNode* sim = initial_state->getChild("sim");
508 SGPropertyNode* cameraGroupNode = sim->getNode("rendering/camera-group");
509 if (cameraGroupNode) {
510 cameraGroupNode->removeChild("camera");
511 cameraGroupNode->removeChild("gui");
515 static std::string autosaveName()
517 std::ostringstream os;
518 string_list versionParts = simgear::strutils::split(VERSION, ".");
519 if (versionParts.size() < 2) {
520 return "autosave.xml";
523 os << "autosave_" << versionParts[0] << "_" << versionParts[1] << ".xml";
527 // Restore the saved initial state, if any
529 FGGlobals::restoreInitialState ()
531 if ( initial_state == 0 ) {
532 SG_LOG(SG_GENERAL, SG_ALERT,
533 "No initial state available to restore!!!");
536 // copy properties which are READ/WRITEable - but not USERARCHIVEd or PRESERVEd
537 int checked = SGPropertyNode::READ+SGPropertyNode::WRITE+
538 SGPropertyNode::USERARCHIVE+SGPropertyNode::PRESERVE;
539 int expected = SGPropertyNode::READ+SGPropertyNode::WRITE;
540 if ( copyProperties(initial_state, props, expected, checked)) {
541 SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
543 SG_LOG( SG_GENERAL, SG_INFO,
544 "Some errors restoring initial state (read-only props?)" );
549 // Load user settings from autosave.xml
551 FGGlobals::loadUserSettings(const SGPath& dataPath)
553 // remember that we have (tried) to load any existing autsave.xml
554 haveUserSettings = true;
556 SGPath autosaveFile = simgear::Dir(dataPath).file(autosaveName());
557 SGPropertyNode autosave;
558 if (autosaveFile.exists()) {
559 SG_LOG(SG_INPUT, SG_INFO, "Reading user settings from " << autosaveFile.str());
561 readProperties(autosaveFile.str(), &autosave, SGPropertyNode::USERARCHIVE);
562 } catch (sg_exception& e) {
563 SG_LOG(SG_INPUT, SG_WARN, "failed to read user settings:" << e.getMessage()
564 << "(from " << e.getOrigin() << ")");
567 copyProperties(&autosave, globals->get_props());
570 // Save user settings in autosave.xml
572 FGGlobals::saveUserSettings()
574 // only save settings when we have (tried) to load the previous
575 // settings (otherwise user data was lost)
576 if (!haveUserSettings)
579 if (fgGetBool("/sim/startup/save-on-exit")) {
580 // don't save settings more than once on shutdown
581 haveUserSettings = false;
583 SGPath autosaveFile(globals->get_fg_home());
584 autosaveFile.append(autosaveName());
585 autosaveFile.create_dir( 0700 );
586 SG_LOG(SG_IO, SG_INFO, "Saving user settings to " << autosaveFile.str());
588 writeProperties(autosaveFile.str(), globals->get_props(), false, SGPropertyNode::USERARCHIVE);
589 } catch (const sg_exception &e) {
590 guiErrorMessage("Error writing autosave:", e);
592 SG_LOG(SG_INPUT, SG_DEBUG, "Finished Saving user settings");
597 FGGlobals::get_current_view () const
599 return viewmgr->get_current_view();
602 long int FGGlobals::get_warp() const
604 return fgGetInt("/sim/time/warp");
607 void FGGlobals::set_warp( long int w )
609 fgSetInt("/sim/time/warp", w);
612 long int FGGlobals::get_warp_delta() const
614 return fgGetInt("/sim/time/warp-delta");
617 void FGGlobals::set_warp_delta( long int d )
619 fgSetInt("/sim/time/warp-delta", d);
622 // end of globals.cxx