// fg_init.cxx -- Flight Gear top level initialization routines // // Written by Curtis Olson, started August 1997. // // Copyright (C) 1997 Curtis L. Olson - http://www.flightgear.org/~curt // // 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. // // $Id$ #ifdef HAVE_CONFIG_H # include #endif #include #include #include // strcmp() #if defined( unix ) || defined( __CYGWIN__ ) # include // for gethostname() #endif #ifdef _WIN32 # include // for getcwd() # define getcwd _getcwd # include // isatty() # define isatty _isatty # include "winsock2.h" // for gethostname() #endif // work around a stdc++ lib bug in some versions of linux, but doesn't // seem to hurt to have this here for all versions of Linux. #ifdef linux # define _G_NO_EXTERN_TEMPLATES #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if ENABLE_ATCDCL # include # include # include "ATCDCL/commlist.hxx" #else # include "ATC/atcutils.hxx" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fg_init.hxx" #include "fg_io.hxx" #include "fg_commands.hxx" #include "fg_props.hxx" #include "options.hxx" #include "globals.hxx" #include "logger.hxx" #include "renderer.hxx" #include "viewmgr.hxx" #include "main.hxx" #ifdef __APPLE__ # include #endif using std::string; using namespace boost::algorithm; extern const char *default_root; // Scan the command line options for the specified option and return // the value. static string fgScanForOption( const string& option, int argc, char **argv ) { int i = 1; if (hostname == NULL) { char _hostname[256]; gethostname(_hostname, 256); hostname = strdup(_hostname); free_hostname = true; } SG_LOG(SG_GENERAL, SG_INFO, "Scanning command line for: " << option ); int len = option.length(); while ( i < argc ) { SG_LOG( SG_GENERAL, SG_DEBUG, "argv[" << i << "] = " << argv[i] ); string arg = argv[i]; if ( arg.find( option ) == 0 ) { return arg.substr( len ); } i++; } return ""; } // Scan the user config files for the specified option and return // the value. static string fgScanForOption( const string& option, const string& path ) { sg_gzifstream in( path ); if ( !in.is_open() ) { return ""; } SG_LOG( SG_GENERAL, SG_INFO, "Scanning " << path << " for: " << option ); int len = option.length(); in >> skipcomment; while ( ! in.eof() ) { string line; getline( in, line, '\n' ); // catch extraneous (DOS) line ending character if ( line[line.length() - 1] < 32 ) { line = line.substr( 0, line.length()-1 ); } if ( line.find( option ) == 0 ) { return line.substr( len ); } in >> skipcomment; } return ""; } // Scan the user config files for the specified option and return // the value. static string fgScanForOption( const string& option ) { string arg(""); #if defined( unix ) || defined( __CYGWIN__ ) // Next check home directory for .fgfsrc.hostname file if ( arg.empty() ) { if ( homedir != NULL ) { SGPath config( homedir ); config.append( ".fgfsrc" ); config.concat( "." ); config.concat( hostname ); arg = fgScanForOption( option, config.str() ); } } #endif // Next check home directory for .fgfsrc file if ( arg.empty() ) { if ( homedir != NULL ) { SGPath config( homedir ); config.append( ".fgfsrc" ); arg = fgScanForOption( option, config.str() ); } } if ( arg.empty() ) { // Check for $fg_root/system.fgfsrc SGPath config( globals->get_fg_root() ); config.append( "system.fgfsrc" ); arg = fgScanForOption( option, config.str() ); } return arg; } // Read in configuration (files and command line options) but only set // fg_root bool fgInitFGRoot ( int argc, char **argv ) { string root; // First parse command line options looking for --fg-root=, this // will override anything specified in a config file root = fgScanForOption( "--fg-root=", argc, argv); // Check in one of the user configuration files. if (root.empty() ) root = fgScanForOption( "--fg-root=" ); // Next check if fg-root is set as an env variable if ( root.empty() ) { char *envp = ::getenv( "FG_ROOT" ); if ( envp != NULL ) { root = envp; } } // Otherwise, default to a random compiled-in location if we can't // find fg-root any other way. if ( root.empty() ) { #if defined( __CYGWIN__ ) root = "../data"; #elif defined( _WIN32 ) root = "..\\data"; #elif defined(__APPLE__) /* The following code looks for the base package inside the application bundle, in the standard Contents/Resources location. */ CFURLRef resourcesUrl = CFBundleCopyResourcesDirectoryURL(CFBundleGetMainBundle()); // look for a 'data' subdir CFURLRef dataDir = CFURLCreateCopyAppendingPathComponent(NULL, resourcesUrl, CFSTR("data"), true); // now convert down to a path, and the a c-string CFStringRef path = CFURLCopyFileSystemPath(dataDir, kCFURLPOSIXPathStyle); root = CFStringGetCStringPtr(path, CFStringGetSystemEncoding()); CFRelease(resourcesUrl); CFRelease(dataDir); CFRelease(path); #else root = PKGLIBDIR; #endif } SG_LOG(SG_INPUT, SG_INFO, "fg_root = " << root ); globals->set_fg_root(root); return true; } // Read in configuration (files and command line options) but only set // aircraft bool fgInitFGAircraft ( int argc, char **argv ) { string aircraft; // First parse command line options looking for --aircraft=, this // will override anything specified in a config file aircraft = fgScanForOption( "--aircraft=", argc, argv ); if ( aircraft.empty() ) { // check synonym option aircraft = fgScanForOption( "--vehicle=", argc, argv ); } // Check in one of the user configuration files. if ( aircraft.empty() ) { aircraft = fgScanForOption( "--aircraft=" ); } if ( aircraft.empty() ) { aircraft = fgScanForOption( "--vehicle=" ); } // if an aircraft was specified, set the property name if ( !aircraft.empty() ) { SG_LOG(SG_INPUT, SG_INFO, "aircraft = " << aircraft ); fgSetString("/sim/aircraft", aircraft.c_str() ); } else { SG_LOG(SG_INPUT, SG_INFO, "No user specified aircraft, using default" ); } return true; } // Return the current base package version string fgBasePackageVersion() { SGPath base_path( globals->get_fg_root() ); base_path.append("version"); sg_gzifstream in( base_path.str() ); if ( !in.is_open() ) { SGPath old_path( globals->get_fg_root() ); old_path.append( "Thanks" ); sg_gzifstream old( old_path.str() ); if ( !old.is_open() ) { return "[none]"; } else { return "[old version]"; } } string version; in >> version; return version; } // Initialize the localization SGPropertyNode *fgInitLocale(const char *language) { SGPropertyNode *c_node = NULL, *d_node = NULL; SGPropertyNode *intl = fgGetNode("/sim/intl"); SG_LOG(SG_GENERAL, SG_INFO, "Selecting language: " << language ); // localization not defined if (!intl) return NULL; // // Select the proper language from the list // vector locale = intl->getChildren("locale"); for (unsigned int i = 0; i < locale.size(); i++) { vector lang = locale[i]->getChildren("lang"); for (unsigned int j = 0; j < lang.size(); j++) { if (!strcmp(lang[j]->getStringValue(), language)) { c_node = locale[i]; break; } } } // Get the defaults d_node = intl->getChild("locale"); if (!c_node) c_node = d_node; // Check for localized font SGPropertyNode *font_n = c_node->getNode("font", true); if ( !strcmp(font_n->getStringValue(), "") ) font_n->setStringValue(d_node->getStringValue("font", "typewriter.txf")); // // Load the default strings // SGPath d_path( globals->get_fg_root() ); const char *d_path_str = d_node->getStringValue("strings"); if (!d_path_str) { SG_LOG(SG_GENERAL, SG_ALERT, "No path in " << d_node->getPath() << "/strings."); return NULL; } d_path.append(d_path_str); SG_LOG(SG_GENERAL, SG_INFO, "Reading localized strings from " << d_path.str()); SGPropertyNode *strings = c_node->getNode("strings"); try { readProperties(d_path.str(), strings); } catch (const sg_exception &) { SG_LOG(SG_GENERAL, SG_ALERT, "Unable to read the localized strings"); return NULL; } // // Load the language specific strings // if (c_node != d_node) { SGPath c_path( globals->get_fg_root() ); const char *c_path_str = c_node->getStringValue("strings"); if (!c_path_str) { SG_LOG(SG_GENERAL, SG_ALERT, "No path in " << c_node->getPath() << "/strings"); return NULL; } c_path.append(c_path_str); SG_LOG(SG_GENERAL, SG_INFO, "Reading localized strings from " << c_path.str()); try { readProperties(c_path.str(), strings); } catch (const sg_exception &) { SG_LOG(SG_GENERAL, SG_ALERT, "Unable to read the localized strings from " << c_path.str()); return NULL; } } return c_node; } // Initialize the localization routines bool fgDetectLanguage() { const char *language = ::getenv("LANG"); if (language == NULL) { SG_LOG(SG_GENERAL, SG_INFO, "Unable to detect the language" ); language = "C"; } SGPropertyNode *locale = fgInitLocale(language); if (!locale) { SG_LOG(SG_GENERAL, SG_ALERT, "No internationalization settings specified in preferences.xml" ); return false; } globals->set_locale( locale ); return true; } // Attempt to locate and parse the various non-XML config files in order // from least precidence to greatest precidence static void do_options (int argc, char ** argv) { // Check for $fg_root/system.fgfsrc SGPath config( globals->get_fg_root() ); config.append( "system.fgfsrc" ); fgParseOptions(config.str()); #if defined( unix ) || defined( __CYGWIN__ ) config.concat( "." ); config.concat( hostname ); fgParseOptions(config.str()); #endif // Check for ~/.fgfsrc if ( homedir != NULL ) { config.set( homedir ); config.append( ".fgfsrc" ); fgParseOptions(config.str()); } #if defined( unix ) || defined( __CYGWIN__ ) // Check for ~/.fgfsrc.hostname config.concat( "." ); config.concat( hostname ); fgParseOptions(config.str()); #endif // Parse remaining command line options // These will override anything specified in a config file fgParseArgs(argc, argv); } static string fgFindAircraftPath( const SGPath &path, const string &aircraft, SGPropertyNode *cache, int depth = 0 ) { const int MAXDEPTH = 1; ulDirEnt* dire; ulDir *dirp = ulOpenDir(path.str().c_str()); if (dirp == NULL) { cerr << "Unable to open aircraft directory '" << path.str() << '\'' << endl; exit(-1); } string result; while ((dire = ulReadDir(dirp)) != NULL) { if (dire->d_isdir) { if (depth > MAXDEPTH) continue; if (!strcmp("CVS", dire->d_name) || !strcmp(".", dire->d_name) || !strcmp("..", dire->d_name) || !strcmp("AI", dire->d_name)) continue; SGPath next = path; next.append(dire->d_name); result = fgFindAircraftPath( next, aircraft, cache, depth + 1 ); if ( ! result.empty() ) break; } else { int len = strlen(dire->d_name); if (len < 9 || strcmp(dire->d_name + len - 8, "-set.xml")) continue; // create cache node int i = 0; while (1) if (!cache->getChild("aircraft", i++, false)) break; SGPropertyNode *n, *entry = cache->getChild("aircraft", --i, true); n = entry->getNode("file", true); n->setStringValue(dire->d_name); n->setAttribute(SGPropertyNode::USERARCHIVE, true); n = entry->getNode("path", true); n->setStringValue(path.str().c_str()); n->setAttribute(SGPropertyNode::USERARCHIVE, true); if ( boost::equals(dire->d_name, aircraft.c_str(), is_iequal()) ) { result = path.str(); break; } } } ulCloseDir(dirp); return result; } // Read in configuration (file and command line) bool fgInitConfig ( int argc, char **argv ) { // First, set some sane default values fgSetDefaults(); // Read global preferences from $FG_ROOT/preferences.xml SG_LOG(SG_INPUT, SG_INFO, "Reading global preferences"); fgLoadProps("preferences.xml", globals->get_props()); SG_LOG(SG_INPUT, SG_INFO, "Finished Reading global preferences"); // Detect the required language as early as possible if ( !fgDetectLanguage() ) { return false; } SGPropertyNode autosave; #ifdef _WIN32 char *envp = ::getenv( "APPDATA" ); if (envp != NULL ) { SGPath config( envp ); config.append( "flightgear.org" ); #else if ( homedir != NULL ) { SGPath config( homedir ); config.append( ".fgfs" ); #endif const char *fg_home = getenv("FG_HOME"); if (fg_home) config = fg_home; SGPath home_export(config.str()); home_export.append("Export/dummy"); home_export.create_dir(0777); // Set /sim/fg-home and don't allow malign code to override it until // Nasal security is set up. Use FG_HOME if necessary. SGPropertyNode *home = fgGetNode("/sim", true); home->removeChild("fg-home", 0, false); home = home->getChild("fg-home", 0, true); home->setStringValue(config.c_str()); home->setAttribute(SGPropertyNode::WRITE, false); config.append( "autosave.xml" ); SG_LOG(SG_INPUT, SG_INFO, "Reading user settings from " << config.str()); try { readProperties(config.str(), &autosave, SGPropertyNode::USERARCHIVE); } catch (...) { SG_LOG(SG_INPUT, SG_DEBUG, "First time reading user settings"); } SG_LOG(SG_INPUT, SG_DEBUG, "Finished Reading user settings"); } SGPropertyNode *cache_root = autosave.getNode("sim/startup/path-cache", true); // Scan user config files and command line for a specified aircraft. fgInitFGAircraft(argc, argv); string aircraft = fgGetString( "/sim/aircraft", "" ); if ( aircraft.size() > 0 ) { SGPath aircraft_search( globals->get_fg_root() ); aircraft_search.append( "Aircraft" ); string aircraft_set = aircraft + "-set.xml"; string result; // check if the *-set.xml file is already in the cache if (globals->get_fg_root() == cache_root->getStringValue("fg-root", "")) { vector cache = cache_root->getChildren("aircraft"); for (unsigned int i = 0; i < cache.size(); i++) { const char *name = cache[i]->getStringValue("file", ""); if (boost::equals(aircraft_set, name, is_iequal())) { const char *path = cache[i]->getStringValue("path", ""); SGPath xml(path); xml.append(name); if (xml.exists()) result = path; break; } } } if (result.empty()) { // prepare cache for rescan SGPropertyNode *n = cache_root->getNode("fg-root", true); n->setStringValue(globals->get_fg_root().c_str()); n->setAttribute(SGPropertyNode::USERARCHIVE, true); cache_root->removeChildren("aircraft"); result = fgFindAircraftPath( aircraft_search, aircraft_set, cache_root ); } if ( !result.empty() ) { fgSetString( "/sim/aircraft-dir", result.c_str() ); SGPath full_name( result ); full_name.append( aircraft_set ); SG_LOG(SG_INPUT, SG_INFO, "Reading default aircraft: " << aircraft << " from " << full_name.str()); try { readProperties( full_name.str(), globals->get_props() ); } catch ( const sg_exception &e ) { string message = "Error reading default aircraft: "; message += e.getFormattedMessage(); SG_LOG(SG_INPUT, SG_ALERT, message); exit(2); } } else { SG_LOG( SG_INPUT, SG_ALERT, "Cannot find specified aircraft: " << aircraft ); return false; } } else { SG_LOG( SG_INPUT, SG_ALERT, "No default aircraft specified" ); } copyProperties(&autosave, globals->get_props()); // parse options after loading aircraft to ensure any user // overrides of defaults are honored. do_options(argc, argv); return true; } // Set current tower position lon/lat given an airport id static bool fgSetTowerPosFromAirportID( const string& id) { const FGAirport *a = fgFindAirportID( id); if (a) { SGGeod tower = a->getTowerLocation(); fgSetDouble("/sim/tower/longitude-deg", tower.getLongitudeDeg()); fgSetDouble("/sim/tower/latitude-deg", tower.getLatitudeDeg()); fgSetDouble("/sim/tower/altitude-ft", tower.getElevationFt()); return true; } else { return false; } } struct FGTowerLocationListener : SGPropertyChangeListener { void valueChanged(SGPropertyNode* node) { const string id(node->getStringValue()); fgSetTowerPosFromAirportID(id); } }; void fgInitTowerLocationListener() { fgGetNode("/sim/tower/airport-id", true) ->addChangeListener( new FGTowerLocationListener(), true ); } static void fgApplyStartOffset(const SGGeod& aStartPos, double aHeading, double aTargetHeading = HUGE_VAL) { SGGeod startPos(aStartPos); if (aTargetHeading == HUGE_VAL) { aTargetHeading = aHeading; } if ( fabs( fgGetDouble("/sim/presets/offset-distance-nm") ) > SG_EPSILON ) { double offsetDistance = fgGetDouble("/sim/presets/offset-distance-nm"); offsetDistance *= SG_NM_TO_METER; double offsetAzimuth = aHeading; if ( fabs(fgGetDouble("/sim/presets/offset-azimuth-deg")) > SG_EPSILON ) { offsetAzimuth = fgGetDouble("/sim/presets/offset-azimuth-deg"); aHeading = aTargetHeading; } SGGeod offset; double az2; // dummy SGGeodesy::direct(startPos, offsetAzimuth + 180, offsetDistance, offset, az2); startPos = offset; } // presets fgSetDouble("/sim/presets/longitude-deg", startPos.getLongitudeDeg() ); fgSetDouble("/sim/presets/latitude-deg", startPos.getLatitudeDeg() ); fgSetDouble("/sim/presets/heading-deg", aHeading ); // other code depends on the actual values being set ... fgSetDouble("/position/longitude-deg", startPos.getLongitudeDeg() ); fgSetDouble("/position/latitude-deg", startPos.getLatitudeDeg() ); fgSetDouble("/orientation/heading-deg", aHeading ); } // Set current_options lon/lat given an airport id and heading (degrees) static bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) { if ( id.empty() ) return false; // set initial position from runway and heading SG_LOG( SG_GENERAL, SG_INFO, "Attempting to set starting position from airport code " << id << " heading " << tgt_hdg ); const FGAirport* apt = fgFindAirportID(id); if (!apt) return false; FGRunway* r = apt->findBestRunwayForHeading(tgt_hdg); fgSetString("/sim/atc/runway", r->ident().c_str()); SGGeod startPos = r->pointOnCenterline(fgGetDouble("/sim/airport/runways/start-offset-m", 5.0)); fgApplyStartOffset(startPos, r->headingDeg(), tgt_hdg); return true; } // Set current_options lon/lat given an airport id and parkig position name static bool fgSetPosFromAirportIDandParkpos( const string& id, const string& parkpos ) { if ( id.empty() ) return false; // can't see an easy way around this const_cast at the moment FGAirport* apt = const_cast(fgFindAirportID(id)); if (!apt) { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to find airport " << id ); return false; } FGAirportDynamics* dcs = apt->getDynamics(); if (!dcs) { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to find parking position " << parkpos << " at airport " << id ); return false; } int park_index = dcs->getNrOfParkings() - 1; while (park_index >= 0 && dcs->getParkingName(park_index) != parkpos) park_index--; if (park_index < 0) { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to find parking position " << parkpos << " at airport " << id ); return false; } FGParking* parking = dcs->getParking(park_index); parking->setAvailable(false); fgApplyStartOffset( SGGeod::fromDeg(parking->getLongitude(), parking->getLatitude()), parking->getHeading()); return true; } // Set current_options lon/lat given an airport id and runway number static bool fgSetPosFromAirportIDandRwy( const string& id, const string& rwy, bool rwy_req ) { if ( id.empty() ) return false; // set initial position from airport and runway number SG_LOG( SG_GENERAL, SG_INFO, "Attempting to set starting position for " << id << ":" << rwy ); const FGAirport* apt = fgFindAirportID(id); if (!apt) { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to find airport:" << id); return false; } if (!apt->hasRunwayWithIdent(rwy)) { SG_LOG( SG_GENERAL, rwy_req ? SG_ALERT : SG_INFO, "Failed to find runway " << rwy << " at airport " << id << ". Using default runway." ); return false; } FGRunway* r(apt->getRunwayByIdent(rwy)); fgSetString("/sim/atc/runway", r->ident().c_str()); SGGeod startPos = r->pointOnCenterline( fgGetDouble("/sim/airport/runways/start-offset-m", 5.0)); fgApplyStartOffset(startPos, r->headingDeg()); return true; } static void fgSetDistOrAltFromGlideSlope() { // cout << "fgSetDistOrAltFromGlideSlope()" << endl; string apt_id = fgGetString("/sim/presets/airport-id"); double gs = fgGetDouble("/sim/presets/glideslope-deg") * SG_DEGREES_TO_RADIANS ; double od = fgGetDouble("/sim/presets/offset-distance-nm"); double alt = fgGetDouble("/sim/presets/altitude-ft"); double apt_elev = 0.0; if ( ! apt_id.empty() ) { apt_elev = fgGetAirportElev( apt_id ); if ( apt_elev < -9990.0 ) { apt_elev = 0.0; } } else { apt_elev = 0.0; } if( fabs(gs) > 0.01 && fabs(od) > 0.1 && alt < -9990 ) { // set altitude from glideslope and offset-distance od *= SG_NM_TO_METER * SG_METER_TO_FEET; alt = fabs(od*tan(gs)) + apt_elev; fgSetDouble("/sim/presets/altitude-ft", alt); fgSetBool("/sim/presets/onground", false); SG_LOG( SG_GENERAL, SG_INFO, "Calculated altitude as: " << alt << " ft" ); } else if( fabs(gs) > 0.01 && alt > 0 && fabs(od) < 0.1) { // set offset-distance from glideslope and altitude od = (alt - apt_elev) / tan(gs); od *= -1*SG_FEET_TO_METER * SG_METER_TO_NM; fgSetDouble("/sim/presets/offset-distance-nm", od); fgSetBool("/sim/presets/onground", false); SG_LOG( SG_GENERAL, SG_INFO, "Calculated offset distance as: " << od << " nm" ); } else if( fabs(gs) > 0.01 ) { SG_LOG( SG_GENERAL, SG_ALERT, "Glideslope given but not altitude or offset-distance." ); SG_LOG( SG_GENERAL, SG_ALERT, "Resetting glideslope to zero" ); fgSetDouble("/sim/presets/glideslope-deg", 0); fgSetBool("/sim/presets/onground", true); } } // Set current_options lon/lat given an airport id and heading (degrees) static bool fgSetPosFromNAV( const string& id, const double& freq ) { FGNavRecord *nav = globals->get_navlist()->findByIdentAndFreq( id.c_str(), freq ); if (!nav) { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to locate NAV = " << id << ":" << freq ); return false; } fgApplyStartOffset(nav->geod(), fgGetDouble("/sim/presets/heading-deg")); return true; } // Set current_options lon/lat given an aircraft carrier id static bool fgSetPosFromCarrier( const string& carrier, const string& posid ) { // set initial position from runway and heading SGGeod geodPos; double heading; SGVec3d uvw; if (FGAIManager::getStartPosition(carrier, posid, geodPos, heading, uvw)) { double lon = geodPos.getLongitudeDeg(); double lat = geodPos.getLatitudeDeg(); double alt = geodPos.getElevationFt(); SG_LOG( SG_GENERAL, SG_INFO, "Attempting to set starting position for " << carrier << " at lat = " << lat << ", lon = " << lon << ", alt = " << alt << ", heading = " << heading); fgSetDouble("/sim/presets/longitude-deg", lon); fgSetDouble("/sim/presets/latitude-deg", lat); fgSetDouble("/sim/presets/altitude-ft", alt); fgSetDouble("/sim/presets/heading-deg", heading); fgSetDouble("/position/longitude-deg", lon); fgSetDouble("/position/latitude-deg", lat); fgSetDouble("/position/altitude-ft", alt); fgSetDouble("/orientation/heading-deg", heading); fgSetString("/sim/presets/speed-set", "UVW"); fgSetDouble("/velocities/uBody-fps", uvw(0)); fgSetDouble("/velocities/vBody-fps", uvw(1)); fgSetDouble("/velocities/wBody-fps", uvw(2)); fgSetDouble("/sim/presets/uBody-fps", uvw(0)); fgSetDouble("/sim/presets/vBody-fps", uvw(1)); fgSetDouble("/sim/presets/wBody-fps", uvw(2)); fgSetBool("/sim/presets/onground", true); return true; } else { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to locate aircraft carrier = " << carrier ); return false; } } // Set current_options lon/lat given an airport id and heading (degrees) static bool fgSetPosFromFix( const string& id ) { FGPositioned::TypeFilter fixFilter(FGPositioned::FIX); FGPositioned* fix = FGPositioned::findNextWithPartialId(NULL, id, &fixFilter); if (!fix) { SG_LOG( SG_GENERAL, SG_ALERT, "Failed to locate fix = " << id ); return false; } fgApplyStartOffset(fix->geod(), fgGetDouble("/sim/presets/heading-deg")); return true; } /** * Initialize vor/ndb/ils/fix list management and query systems (as * well as simple airport db list) */ bool fgInitNav () { SG_LOG(SG_GENERAL, SG_INFO, "Loading Airport Database ..."); SGPath aptdb( globals->get_fg_root() ); aptdb.append( "Airports/apt.dat" ); SGPath p_metar( globals->get_fg_root() ); p_metar.append( "Airports/metar.dat" ); // Initialise the frequency search map BEFORE reading // the airport database: current_commlist = new FGCommList; current_commlist->init( globals->get_fg_root() ); fgAirportDBLoad( aptdb.str(), current_commlist, p_metar.str() ); FGNavList *navlist = new FGNavList; FGNavList *loclist = new FGNavList; FGNavList *gslist = new FGNavList; FGNavList *dmelist = new FGNavList; FGNavList *tacanlist = new FGNavList; FGNavList *carrierlist = new FGNavList; FGTACANList *channellist = new FGTACANList; globals->set_navlist( navlist ); globals->set_loclist( loclist ); globals->set_gslist( gslist ); globals->set_dmelist( dmelist ); globals->set_tacanlist( tacanlist ); globals->set_carrierlist( carrierlist ); globals->set_channellist( channellist ); if ( !fgNavDBInit(navlist, loclist, gslist, dmelist, tacanlist, carrierlist, channellist) ) { SG_LOG( SG_GENERAL, SG_ALERT, "Problems loading one or more navigational database" ); } SG_LOG(SG_GENERAL, SG_INFO, " Fixes"); SGPath p_fix( globals->get_fg_root() ); p_fix.append( "Navaids/fix.dat" ); FGFixList fixlist; fixlist.init( p_fix ); // adds fixes to the DB in positioned.cxx SG_LOG(SG_GENERAL, SG_INFO, " Airways"); SGPath p_awy( globals->get_fg_root() ); p_awy.append( "Navaids/awy.dat" ); FGAirwayNetwork *awyNet = new FGAirwayNetwork; //cerr << "Loading Airways" << endl; awyNet->load (p_awy ); awyNet->init(); //cerr << "initializing airways" << endl; globals->set_airwaynet( awyNet ); return true; } // Set the initial position based on presets (or defaults) bool fgInitPosition() { // cout << "fgInitPosition()" << endl; double gs = fgGetDouble("/sim/presets/glideslope-deg") * SG_DEGREES_TO_RADIANS ; double od = fgGetDouble("/sim/presets/offset-distance-nm"); double alt = fgGetDouble("/sim/presets/altitude-ft"); bool set_pos = false; // If glideslope is specified, then calculate offset-distance or // altitude relative to glide slope if either of those was not // specified. if ( fabs( gs ) > 0.01 ) { fgSetDistOrAltFromGlideSlope(); } // If we have an explicit, in-range lon/lat, don't change it, just use it. // If not, check for an airport-id and use that. // If not, default to the middle of the KSFO field. // The default values for lon/lat are deliberately out of range // so that the airport-id can take effect; valid lon/lat will // override airport-id, however. double lon_deg = fgGetDouble("/sim/presets/longitude-deg"); double lat_deg = fgGetDouble("/sim/presets/latitude-deg"); if ( lon_deg >= -180.0 && lon_deg <= 180.0 && lat_deg >= -90.0 && lat_deg <= 90.0 ) { set_pos = true; } string apt = fgGetString("/sim/presets/airport-id"); string rwy_no = fgGetString("/sim/presets/runway"); bool rwy_req = fgGetBool("/sim/presets/runway-requested"); string vor = fgGetString("/sim/presets/vor-id"); double vor_freq = fgGetDouble("/sim/presets/vor-freq"); string ndb = fgGetString("/sim/presets/ndb-id"); double ndb_freq = fgGetDouble("/sim/presets/ndb-freq"); string carrier = fgGetString("/sim/presets/carrier"); string parkpos = fgGetString("/sim/presets/parkpos"); string fix = fgGetString("/sim/presets/fix"); SGPropertyNode *hdg_preset = fgGetNode("/sim/presets/heading-deg", true); double hdg = hdg_preset->getDoubleValue(); // save some start parameters, so that we can later say what the // user really requested. TODO generalize that and move it to options.cxx static bool start_options_saved = false; if (!start_options_saved) { start_options_saved = true; SGPropertyNode *opt = fgGetNode("/sim/startup/options", true); opt->setDoubleValue("latitude-deg", lat_deg); opt->setDoubleValue("longitude-deg", lon_deg); opt->setDoubleValue("heading-deg", hdg); opt->setStringValue("airport", apt.c_str()); opt->setStringValue("runway", rwy_no.c_str()); } if (hdg > 9990.0) hdg = fgGetDouble("/environment/config/boundary/entry/wind-from-heading-deg", 270); if ( !set_pos && !apt.empty() && !parkpos.empty() ) { // An airport + parking position is requested if ( fgSetPosFromAirportIDandParkpos( apt, parkpos ) ) { // set tower position fgSetString("/sim/tower/airport-id", apt.c_str()); set_pos = true; } } if ( !set_pos && !apt.empty() && !rwy_no.empty() ) { // An airport + runway is requested if ( fgSetPosFromAirportIDandRwy( apt, rwy_no, rwy_req ) ) { // set tower position (a little off the heading for single // runway airports) fgSetString("/sim/tower/airport-id", apt.c_str()); set_pos = true; } } if ( !set_pos && !apt.empty() ) { // An airport is requested (find runway closest to hdg) if ( fgSetPosFromAirportIDandHdg( apt, hdg ) ) { // set tower position (a little off the heading for single // runway airports) fgSetString("/sim/tower/airport-id", apt.c_str()); set_pos = true; } } if (hdg_preset->getDoubleValue() > 9990.0) hdg_preset->setDoubleValue(hdg); if ( !set_pos && !vor.empty() ) { // a VOR is requested if ( fgSetPosFromNAV( vor, vor_freq ) ) { set_pos = true; } } if ( !set_pos && !ndb.empty() ) { // an NDB is requested if ( fgSetPosFromNAV( ndb, ndb_freq ) ) { set_pos = true; } } if ( !set_pos && !carrier.empty() ) { // an aircraft carrier is requested if ( fgSetPosFromCarrier( carrier, parkpos ) ) { set_pos = true; } } if ( !set_pos && !fix.empty() ) { // a Fix is requested if ( fgSetPosFromFix( fix ) ) { set_pos = true; } } if ( !set_pos ) { // No lon/lat specified, no airport specified, default to // middle of KSFO field. fgSetDouble("/sim/presets/longitude-deg", -122.374843); fgSetDouble("/sim/presets/latitude-deg", 37.619002); } fgSetDouble( "/position/longitude-deg", fgGetDouble("/sim/presets/longitude-deg") ); fgSetDouble( "/position/latitude-deg", fgGetDouble("/sim/presets/latitude-deg") ); fgSetDouble( "/orientation/heading-deg", hdg_preset->getDoubleValue()); // determine if this should be an on-ground or in-air start if ((fabs(gs) > 0.01 || fabs(od) > 0.1 || alt > 0.1) && carrier.empty()) { fgSetBool("/sim/presets/onground", false); } else { fgSetBool("/sim/presets/onground", true); } return true; } // General house keeping initializations bool fgInitGeneral() { string root; SG_LOG( SG_GENERAL, SG_INFO, "General Initialization" ); SG_LOG( SG_GENERAL, SG_INFO, "======= ==============" ); root = globals->get_fg_root(); if ( ! root.length() ) { // No root path set? Then bail ... SG_LOG( SG_GENERAL, SG_ALERT, "Cannot continue without a path to the base package " << "being defined." ); exit(-1); } SG_LOG( SG_GENERAL, SG_INFO, "FG_ROOT = " << '"' << root << '"' << endl ); globals->set_browser(fgGetString("/sim/startup/browser-app", "firefox %u")); char buf[512], *cwd = getcwd(buf, 511); buf[511] = '\0'; SGPropertyNode *curr = fgGetNode("/sim", true); curr->removeChild("fg-current", 0, false); curr = curr->getChild("fg-current", 0, true); curr->setStringValue(cwd ? cwd : ""); curr->setAttribute(SGPropertyNode::WRITE, false); fgSetBool("/sim/startup/stdout-to-terminal", isatty(1)); fgSetBool("/sim/startup/stderr-to-terminal", isatty(2)); return true; } // Initialize view parameters void fgInitView() { // force update of model so that viewer can get some data... globals->get_aircraft_model()->update(0); // run update for current view so that data is current... globals->get_viewmgr()->update(0); } SGTime *fgInitTime() { // Initialize time static const SGPropertyNode *longitude = fgGetNode("/position/longitude-deg"); static const SGPropertyNode *latitude = fgGetNode("/position/latitude-deg"); static const SGPropertyNode *cur_time_override = fgGetNode("/sim/time/cur-time-override", true); SGPath zone( globals->get_fg_root() ); zone.append( "Timezone" ); SGTime *t = new SGTime( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, zone.str(), cur_time_override->getLongValue() ); globals->set_warp_delta( 0 ); t->update( 0.0, 0.0, cur_time_override->getLongValue(), globals->get_warp() ); return t; } // set up a time offset (aka warp) if one is specified void fgInitTimeOffset() { static const SGPropertyNode *longitude = fgGetNode("/position/longitude-deg"); static const SGPropertyNode *latitude = fgGetNode("/position/latitude-deg"); static const SGPropertyNode *cur_time_override = fgGetNode("/sim/time/cur-time-override", true); // Handle potential user specified time offsets int orig_warp = globals->get_warp(); SGTime *t = globals->get_time_params(); time_t cur_time = t->get_cur_time(); time_t currGMT = sgTimeGetGMT( gmtime(&cur_time) ); time_t systemLocalTime = sgTimeGetGMT( localtime(&cur_time) ); time_t aircraftLocalTime = sgTimeGetGMT( fgLocaltime(&cur_time, t->get_zonename() ) ); // Okay, we now have several possible scenarios int offset = fgGetInt("/sim/startup/time-offset"); string offset_type = fgGetString("/sim/startup/time-offset-type"); int warp = 0; if ( offset_type == "real" ) { warp = 0; } else if ( offset_type == "dawn" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 90.0, true ); } else if ( offset_type == "morning" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 75.0, true ); } else if ( offset_type == "noon" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 0.0, true ); } else if ( offset_type == "afternoon" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 60.0, false ); } else if ( offset_type == "dusk" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 90.0, false ); } else if ( offset_type == "evening" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 100.0, false ); } else if ( offset_type == "midnight" ) { warp = fgTimeSecondsUntilSunAngle( cur_time, longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, 180.0, false ); } else if ( offset_type == "system-offset" ) { warp = offset; orig_warp = 0; } else if ( offset_type == "gmt-offset" ) { warp = offset - (currGMT - systemLocalTime); orig_warp = 0; } else if ( offset_type == "latitude-offset" ) { warp = offset - (aircraftLocalTime - systemLocalTime); orig_warp = 0; } else if ( offset_type == "system" ) { warp = offset - (systemLocalTime - currGMT) - cur_time; } else if ( offset_type == "gmt" ) { warp = offset - cur_time; } else if ( offset_type == "latitude" ) { warp = offset - (aircraftLocalTime - currGMT)- cur_time; } else { SG_LOG( SG_GENERAL, SG_ALERT, "FG_TIME::Unsupported offset type " << offset_type ); exit( -1 ); } globals->set_warp( orig_warp + warp ); t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, cur_time_override->getLongValue(), globals->get_warp() ); SG_LOG( SG_GENERAL, SG_INFO, "After fgInitTimeOffset(): warp = " << globals->get_warp() ); } // This is the top level init routine which calls all the other // initialization routines. If you are adding a subsystem to flight // gear, its initialization call should located in this routine. // Returns non-zero if a problem encountered. bool fgInitSubsystems() { // static const SGPropertyNode *longitude // = fgGetNode("/sim/presets/longitude-deg"); // static const SGPropertyNode *latitude // = fgGetNode("/sim/presets/latitude-deg"); // static const SGPropertyNode *altitude // = fgGetNode("/sim/presets/altitude-ft"); SG_LOG( SG_GENERAL, SG_INFO, "Initialize Subsystems"); SG_LOG( SG_GENERAL, SG_INFO, "========== =========="); //////////////////////////////////////////////////////////////////// // Initialize the event manager subsystem. //////////////////////////////////////////////////////////////////// globals->get_event_mgr()->init(); globals->get_event_mgr()->setRealtimeProperty(fgGetNode("/sim/time/delta-realtime-sec", true)); //////////////////////////////////////////////////////////////////// // Initialize the property interpolator subsystem. Put into the INIT // group because the "nasal" subsystem may need it at GENERAL take-down. //////////////////////////////////////////////////////////////////// globals->add_subsystem("interpolator", new SGInterpolator, SGSubsystemMgr::INIT); //////////////////////////////////////////////////////////////////// // Add the FlightGear property utilities. //////////////////////////////////////////////////////////////////// globals->add_subsystem("properties", new FGProperties); //////////////////////////////////////////////////////////////////// // Initialize the material property subsystem. //////////////////////////////////////////////////////////////////// SGPath mpath( globals->get_fg_root() ); mpath.append( "materials.xml" ); if ( ! globals->get_matlib()->load(globals->get_fg_root(), mpath.str(), globals->get_props()) ) { SG_LOG( SG_GENERAL, SG_ALERT, "Error loading material lib!" ); exit(-1); } //////////////////////////////////////////////////////////////////// // Initialize the scenery management subsystem. //////////////////////////////////////////////////////////////////// if ( globals->get_tile_mgr()->init() ) { // Load the local scenery data double visibility_meters = fgGetDouble("/environment/visibility-m"); globals->get_tile_mgr()->update( visibility_meters ); } else { SG_LOG( SG_GENERAL, SG_ALERT, "Error in Tile Manager initialization!" ); exit(-1); } globals->get_scenery()->get_scene_graph() ->addChild(simgear::Particles::getCommonRoot()); simgear::GlobalParticleCallback::setSwitch(fgGetNode("/sim/rendering/particles", true)); //////////////////////////////////////////////////////////////////// // Initialize the flight model subsystem. //////////////////////////////////////////////////////////////////// globals->add_subsystem("flight", new FDMShell, SGSubsystemMgr::FDM); //////////////////////////////////////////////////////////////////// // Initialize the weather subsystem. //////////////////////////////////////////////////////////////////// // Initialize the weather modeling subsystem globals->add_subsystem("environment", new FGEnvironmentMgr); //////////////////////////////////////////////////////////////////// // Initialize the ridge lift simulation. //////////////////////////////////////////////////////////////////// // Initialize the ridgelift subsystem globals->add_subsystem("ridgelift", new FGRidgeLift); //////////////////////////////////////////////////////////////////// // Initialize the aircraft systems and instrumentation (before the // autopilot.) //////////////////////////////////////////////////////////////////// globals->add_subsystem("instrumentation", new FGInstrumentMgr, SGSubsystemMgr::FDM); globals->add_subsystem("systems", new FGSystemMgr, SGSubsystemMgr::FDM); //////////////////////////////////////////////////////////////////// // Initialize the XML Autopilot subsystem. //////////////////////////////////////////////////////////////////// globals->add_subsystem( "xml-autopilot", new FGXMLAutopilotGroup, SGSubsystemMgr::FDM ); globals->add_subsystem( "route-manager", new FGRouteMgr ); //////////////////////////////////////////////////////////////////// // Initialize the view manager subsystem. //////////////////////////////////////////////////////////////////// fgInitView(); //////////////////////////////////////////////////////////////////// // Initialize the Input-Output subsystem //////////////////////////////////////////////////////////////////// globals->add_subsystem( "io", new FGIO ); //////////////////////////////////////////////////////////////////// // Create and register the logger. //////////////////////////////////////////////////////////////////// globals->add_subsystem("logger", new FGLogger); //////////////////////////////////////////////////////////////////// // Create and register the XML GUI. //////////////////////////////////////////////////////////////////// globals->add_subsystem("gui", new NewGUI, SGSubsystemMgr::INIT); //////////////////////////////////////////////////////////////////// // Initialize the local time subsystem. //////////////////////////////////////////////////////////////////// // update the current timezone each 30 minutes globals->get_event_mgr()->addTask( "fgUpdateLocalTime()", &fgUpdateLocalTime, 30*60 ); fgInitTimeOffset(); // the environment subsystem needs this //////////////////////////////////////////////////////////////////// // Initialize the lighting subsystem. //////////////////////////////////////////////////////////////////// globals->add_subsystem("lighting", new FGLight, SGSubsystemMgr::DISPLAY); ////////////////////////////////////////////////////////////////////// // Initialize the 2D cloud subsystem. //////////////////////////////////////////////////////////////////// fgGetBool("/sim/rendering/bump-mapping", false); #ifdef ENABLE_AUDIO_SUPPORT //////////////////////////////////////////////////////////////////// // Initialize the sound-effects subsystem. //////////////////////////////////////////////////////////////////// globals->add_subsystem("voice", new FGVoiceMgr, SGSubsystemMgr::DISPLAY); #endif //////////////////////////////////////////////////////////////////// // Initialise the ATC Manager //////////////////////////////////////////////////////////////////// #if ENABLE_ATCDCL SG_LOG(SG_GENERAL, SG_INFO, " ATC Manager"); globals->set_ATC_mgr(new FGATCMgr); globals->get_ATC_mgr()->init(); //////////////////////////////////////////////////////////////////// // Initialise the AI Manager //////////////////////////////////////////////////////////////////// SG_LOG(SG_GENERAL, SG_INFO, " AI Manager"); globals->set_AI_mgr(new FGAIMgr); globals->get_AI_mgr()->init(); #endif //////////////////////////////////////////////////////////////////// // Initialise the AI Model Manager //////////////////////////////////////////////////////////////////// SG_LOG(SG_GENERAL, SG_INFO, " AI Model Manager"); globals->add_subsystem("ai_model", new FGAIManager, SGSubsystemMgr::POST_FDM); globals->add_subsystem("submodel_mgr", new FGSubmodelMgr, SGSubsystemMgr::POST_FDM); // It's probably a good idea to initialize the top level traffic manager // After the AI and ATC systems have been initialized properly. // AI Traffic manager globals->add_subsystem("Traffic Manager", new FGTrafficManager, SGSubsystemMgr::POST_FDM); if( fgCockpitInit()) { // Cockpit initialized ok. } else { SG_LOG( SG_GENERAL, SG_ALERT, "Error in Cockpit initialization!" ); exit(-1); } //////////////////////////////////////////////////////////////////// // Add a new 2D panel. //////////////////////////////////////////////////////////////////// string panel_path = fgGetString("/sim/panel/path", "Panels/Default/default.xml"); globals->set_current_panel( fgReadPanel(panel_path) ); if (globals->get_current_panel() == 0) { SG_LOG( SG_INPUT, SG_ALERT, "Error reading new panel from " << panel_path ); } else { SG_LOG( SG_INPUT, SG_INFO, "Loaded new panel from " << panel_path ); globals->get_current_panel()->init(); globals->get_current_panel()->bind(); } //////////////////////////////////////////////////////////////////// // Initialize the controls subsystem. //////////////////////////////////////////////////////////////////// globals->get_controls()->init(); globals->get_controls()->bind(); //////////////////////////////////////////////////////////////////// // Initialize the input subsystem. //////////////////////////////////////////////////////////////////// globals->add_subsystem("input", new FGInput); //////////////////////////////////////////////////////////////////// // Initialize the replay subsystem //////////////////////////////////////////////////////////////////// globals->add_subsystem("replay", new FGReplay); //////////////////////////////////////////////////////////////////// // Bind and initialize subsystems. //////////////////////////////////////////////////////////////////// globals->get_subsystem_mgr()->bind(); globals->get_subsystem_mgr()->init(); //////////////////////////////////////////////////////////////////// // Initialize multiplayer subsystem //////////////////////////////////////////////////////////////////// globals->set_multiplayer_mgr(new FGMultiplayMgr); globals->get_multiplayer_mgr()->init(); //////////////////////////////////////////////////////////////////////// // Initialize the Nasal interpreter. // Do this last, so that the loaded scripts see initialized state //////////////////////////////////////////////////////////////////////// FGNasalSys* nasal = new FGNasalSys(); globals->add_subsystem("nasal", nasal, SGSubsystemMgr::INIT); nasal->init(); // initialize methods that depend on other subsystems. globals->get_subsystem_mgr()->postinit(); //////////////////////////////////////////////////////////////////////// // End of subsystem initialization. //////////////////////////////////////////////////////////////////// SG_LOG( SG_GENERAL, SG_INFO, endl); // Save the initial state for future // reference. globals->saveInitialState(); return true; } void fgReInitSubsystems() { // static const SGPropertyNode *longitude // = fgGetNode("/sim/presets/longitude-deg"); // static const SGPropertyNode *latitude // = fgGetNode("/sim/presets/latitude-deg"); static const SGPropertyNode *altitude = fgGetNode("/sim/presets/altitude-ft"); static const SGPropertyNode *master_freeze = fgGetNode("/sim/freeze/master"); SG_LOG( SG_GENERAL, SG_INFO, "fgReInitSubsystems(): /position/altitude = " << altitude->getDoubleValue() ); bool freeze = master_freeze->getBoolValue(); if ( !freeze ) { fgSetBool("/sim/freeze/master", true); } fgSetBool("/sim/crashed", false); // Force reupdating the positions of the ai 3d models. They are used for // initializing ground level for the FDM. globals->get_subsystem("ai_model")->reinit(); // Initialize the FDM globals->get_subsystem("flight")->reinit(); // reload offsets from config defaults globals->get_viewmgr()->reinit(); fgInitView(); globals->get_controls()->reset_all(); fgUpdateLocalTime(); // re-init to proper time of day setting fgInitTimeOffset(); if ( !freeze ) { fgSetBool("/sim/freeze/master", false); } fgSetBool("/sim/sceneryloaded",false); } void doSimulatorReset(void) // from gui_local.cxx -- TODO merge with fgReInitSubsystems() { static SGPropertyNode_ptr master_freeze = fgGetNode("/sim/freeze/master", true); bool freeze = master_freeze->getBoolValue(); if (!freeze) master_freeze->setBoolValue(true); fgSetBool("/sim/signals/reinit", true); globals->get_subsystem("flight")->unbind(); // in case user has changed window size as // restoreInitialState() overwrites these int xsize = fgGetInt("/sim/startup/xsize"); int ysize = fgGetInt("/sim/startup/ysize"); // viewports also needs to be saved/restored as // restoreInitialState() overwrites these SGPropertyNode *guiNode = new SGPropertyNode; SGPropertyNode *cameraNode = new SGPropertyNode; SGPropertyNode *cameraGroupNode = fgGetNode("/sim/rendering/camera-group"); copyProperties(cameraGroupNode->getChild("camera"), cameraNode); copyProperties(cameraGroupNode->getChild("gui"), guiNode); globals->restoreInitialState(); // update our position based on current presets fgInitPosition(); // We don't know how to resize the window, so keep the last values // for xsize and ysize, and don't use the one set initially fgSetInt("/sim/startup/xsize", xsize); fgSetInt("/sim/startup/ysize", ysize); copyProperties(cameraNode, cameraGroupNode->getChild("camera")); copyProperties(guiNode, cameraGroupNode->getChild("gui")); delete guiNode; delete cameraNode; SGTime *t = globals->get_time_params(); delete t; t = fgInitTime(); globals->set_time_params(t); fgReInitSubsystems(); globals->get_tile_mgr()->update(fgGetDouble("/environment/visibility-m")); globals->get_renderer()->resize(xsize, ysize); fgSetBool("/sim/signals/reinit", false); if (!freeze) master_freeze->setBoolValue(false); }