SkySceneLoader *sgCloud3d;
-// Read in configuration (file and command line) and just set fg_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;
+
+ 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;
+#ifndef __MWERKS__
+ while ( ! in.eof() ) {
+#else
+ char c = '\0';
+ while ( in.get(c) && c != '\0' ) {
+ in.putback(c);
+#endif
+ string line;
+
+#if defined( macintosh )
+ getline( in, line, '\r' );
+#else
+ getline( in, line, '\n' );
+#endif
+
+ // 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 "";
+}
+
+
+// Read in configuration (files and command line options) but only set
+// fg_root
bool fgInitFGRoot ( int argc, char **argv ) {
string root;
char* envp;
- // First parse command line options looking for fg-root, this will
- // override anything specified in a config file
- root = fgScanForRoot(argc, argv);
+ // First parse command line options looking for --fg-root=, this
+ // will override anything specified in a config file
+ root = fgScanForOption( "--fg-root=", argc, argv);
#if defined( unix ) || defined( __CYGWIN__ )
// Next check home directory for .fgfsrc.hostname file
gethostname( name, 256 );
config.concat( "." );
config.concat( name );
- root = fgScanForRoot(config.str());
+ root = fgScanForOption( "--fg-root=", config.str() );
}
}
#endif
if ( envp != NULL ) {
SGPath config( envp );
config.append( ".fgfsrc" );
- root = fgScanForRoot(config.str());
+ root = fgScanForOption( "--fg-root=", config.str() );
}
}
}
+// Read in configuration (files and command line options) but only set
+// aircraft
+bool fgInitFGAircraft ( int argc, char **argv ) {
+ string aircraft;
+ char* envp;
+
+ // First parse command line options looking for --aircraft=, this
+ // will override anything specified in a config file
+ aircraft = fgScanForOption( "--aircraft=", argc, argv );
+
+#if defined( unix ) || defined( __CYGWIN__ )
+ // Next check home directory for .fgfsrc.hostname file
+ if ( aircraft.empty() ) {
+ envp = ::getenv( "HOME" );
+ if ( envp != NULL ) {
+ SGPath config( envp );
+ config.append( ".fgfsrc" );
+ char name[256];
+ gethostname( name, 256 );
+ config.concat( "." );
+ config.concat( name );
+ aircraft = fgScanForOption( "--aircraft=", config.str() );
+ }
+ }
+#endif
+
+ // Next check home directory for .fgfsrc file
+ if ( aircraft.empty() ) {
+ envp = ::getenv( "HOME" );
+ if ( envp != NULL ) {
+ SGPath config( envp );
+ config.append( ".fgfsrc" );
+ aircraft = fgScanForOption( "--aircraft=", config.str() );
+ }
+ }
+
+ // 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() );
// Read in configuration (file and command line)
bool fgInitConfig ( int argc, char **argv ) {
- // First, set some sane default values
+ // First, set some sane default values
fgSetDefaults();
// Read global preferences from $FG_ROOT/preferences.xml
SG_LOG(SG_INPUT, SG_INFO, "Finished Reading global preferences");
// Detect the required language as early as possible
- if (fgDetectLanguage() != true)
- return false;
+ if ( !fgDetectLanguage() ) {
+ return false;
+ }
+
+ // Scan user config files and command line for a specified aircraft.
+ fgInitFGAircraft(argc, argv);
- // Read the default aircraft config file.
- do_options(argc, argv); // preparse options for default aircraft
string aircraft = fgGetString("/sim/aircraft", "");
- if (aircraft.size() > 0) {
- SGPath aircraft_path(globals->get_fg_root());
- aircraft_path.append("Aircraft");
- aircraft_path.append(aircraft);
- aircraft_path.concat("-set.xml");
- SG_LOG(SG_INPUT, SG_INFO, "Reading default aircraft: " << aircraft
- << " from " << aircraft_path.str());
- try {
- readProperties(aircraft_path.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);
- }
+ if ( aircraft.size() > 0 ) {
+ SGPath aircraft_path(globals->get_fg_root());
+ aircraft_path.append("Aircraft");
+ aircraft_path.append(aircraft);
+ aircraft_path.concat("-set.xml");
+ SG_LOG(SG_INPUT, SG_INFO, "Reading default aircraft: " << aircraft
+ << " from " << aircraft_path.str());
+ try {
+ readProperties(aircraft_path.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, "No default aircraft specified");
+ SG_LOG(SG_INPUT, SG_ALERT, "No default aircraft specified");
}
+ // parse options after loading aircraft to ensure any user
+ // overrides of defaults are honored.
do_options(argc, argv);
return true;
}
+// get airport elevation
+static double fgGetAirportElev( const string& id ) {
+ FGAirport a;
+ // double lon, lat;
+
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "Finding elevation for airport: " << id );
+
+ if ( fgFindAirportID( id, &a ) ) {
+ return a.elevation;
+ } else {
+ return -9999.0;
+ }
+}
+
+
// Preset lon/lat given an airport id
-bool fgSetPosFromAirportID( const string& id ) {
+static bool fgSetPosFromAirportID( const string& id ) {
FGAirport a;
// double lon, lat;
} else {
return false;
}
-
}
-
// Set current tower position lon/lat given an airport id
-bool fgSetTowerPosFromAirportID( const string& id, double hdg ) {
+static bool fgSetTowerPosFromAirportID( const string& id, double hdg ) {
FGAirport a;
// tower height hard coded for now...
float towerheight=50.0f;
// Set current_options lon/lat given an airport id and heading (degrees)
-bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
+static bool fgSetPosFromAirportIDandHdg( const string& id, double tgt_hdg ) {
FGRunway r;
FGRunway found_r;
double found_dir = 0.0;
"Attempting to set starting position from runway code "
<< id << " heading " << tgt_hdg );
- // SGPath inpath( globals->get_fg_root() );
- // inpath.append( "Airports" );
- // inpath.append( "apt_simple" );
- // airports.load( inpath.c_str() );
-
- // SGPath outpath( globals->get_fg_root() );
- // outpath.append( "Airports" );
- // outpath.append( "simple.gdbm" );
- // airports.dump_gdbm( outpath.c_str() );
-
if ( ! runways.search( id, &r ) ) {
SG_LOG( SG_GENERAL, SG_ALERT,
"Failed to find " << id << " in database." );
}
-void fgSetPosFromGlideSlope(void) {
- double gs = fgGetDouble("/velocities/glideslope");
+// Set current_options lon/lat given an airport id and heading (degrees)
+static bool fgSetPosFromAirportIDandRwy( const string& id, const string& rwy ) {
+ FGRunway r;
+ FGRunway found_r;
+ double heading = 0.0;
+ string runway;
+ bool match = false;
+
+ // standardize input number
+ string tmp = rwy.substr(1, 1);
+ if ( tmp == "L" || tmp == "R" || tmp == "C" ) {
+ runway = "0";
+ runway += rwy;
+ } else {
+ runway = rwy;
+ }
+
+ if ( id.length() ) {
+ // set initial position from runway and heading
+
+ SGPath path( globals->get_fg_root() );
+ path.append( "Airports" );
+ path.append( "runways.mk4" );
+ FGRunways runways( path.c_str() );
+
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "Attempting to set starting position for "
+ << id << ":" << runway );
+
+ if ( ! runways.search( id, &r ) ) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Failed to find " << id << " in database." );
+ return false;
+ }
+
+ while ( r.id == id ) {
+ // forward direction
+ if ( r.rwy_no == runway ) {
+ found_r = r;
+ heading = r.heading;
+ match = true;
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "Runway " << r.rwy_no << " heading = " << heading );
+ }
+
+ // calculate reciprocal runway number
+ string snum = r.rwy_no;
+ int len = snum.length();
+ string letter = "";
+ string rev_letter = "";
+ int i;
+ for ( i = 0; i < len; ++i ) {
+ string tmp = snum.substr(i, 1);
+ if ( tmp == "L" ) {
+ letter = "L";
+ rev_letter = "R";
+ } else if ( tmp == "R" ) {
+ letter = "R";
+ rev_letter = "L";
+ } else if ( tmp == "C" ) {
+ letter == "C";
+ rev_letter = "C";
+ }
+ }
+ for ( i = 0; i < len; ++i ) {
+ string tmp = snum.substr(i, 1);
+ if ( tmp == "L" || tmp == "R" || tmp == "C" || tmp == " " ) {
+ snum = snum.substr(0, i);
+ }
+ }
+ SG_LOG(SG_GENERAL, SG_DEBUG, "Runway num = '" << snum << "'");
+ int num = atoi( snum.c_str() ) + 18;
+ while ( num > 36 ) { num -= 36; }
+ while ( num <= 0 ) { num += 36; }
+
+ char recip_no[10];
+ snprintf( recip_no, 10, "%02d%s", num, rev_letter.c_str() );
+
+ // reverse direction
+ if ( (string)recip_no == runway ) {
+ found_r = r;
+ heading = r.heading + 180;
+ while ( heading > 360.0 ) { heading -= 360; }
+ match = true;
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "Runway " << r.rwy_no << " heading = " << heading );
+ }
+
+ runways.next( &r );
+ }
+ } else {
+ return false;
+ }
+
+ if ( match ) {
+ double lat2, lon2, az2;
+ double azimuth = heading + 180.0;
+ while ( azimuth >= 360.0 ) { azimuth -= 360.0; }
+
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "runway = " << found_r.lon << ", " << found_r.lat
+ << " length = " << found_r.length * SG_FEET_TO_METER * 0.5
+ << " heading = " << azimuth );
+
+ geo_direct_wgs_84 ( 0, found_r.lat, found_r.lon,
+ azimuth,
+ found_r.length * SG_FEET_TO_METER * 0.5 - 5.0,
+ &lat2, &lon2, &az2 );
+
+ if ( fabs( fgGetDouble("/sim/presets/offset-distance") ) > SG_EPSILON )
+ {
+ double olat, olon;
+ double odist = fgGetDouble("/sim/presets/offset-distance");
+ odist *= SG_NM_TO_METER;
+ double oaz = azimuth;
+ if ( fabs(fgGetDouble("/sim/presets/offset-azimuth")) > SG_EPSILON )
+ {
+ oaz = fgGetDouble("/sim/presets/offset-azimuth") + 180;
+ }
+ while ( oaz >= 360.0 ) { oaz -= 360.0; }
+ geo_direct_wgs_84 ( 0, lat2, lon2, oaz, odist, &olat, &olon, &az2 );
+ lat2=olat;
+ lon2=olon;
+ }
+
+ // presets
+ fgSetDouble("/sim/presets/longitude-deg", lon2 );
+ fgSetDouble("/sim/presets/latitude-deg", lat2 );
+ fgSetDouble("/sim/presets/heading-deg", heading );
+
+ // other code depends on the actual values being set ...
+ fgSetDouble("/position/longitude-deg", lon2 );
+ fgSetDouble("/position/latitude-deg", lat2 );
+ fgSetDouble("/orientation/heading-deg", heading );
+
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "Position for " << id << " is ("
+ << lon2 << ", "
+ << lat2 << ") new heading is "
+ << heading );
+
+ return true;
+ } else {
+ return false;
+ }
+}
+
+
+static void fgSetDistOrAltFromGlideSlope() {
+ 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");
double alt = fgGetDouble("/sim/presets/altitude-ft");
-
- //if glideslope and offset-distance are set and altitude is
- //not, calculate the initial altitude
+
+ 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));
- fgSetDouble("/sim/presets/altitude-ft",alt);
+ 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) {
- od = alt/tan(gs);
+ // 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",od);
- SG_LOG(SG_GENERAL,SG_INFO, "Calculated offset distance as: "
+ fgSetDouble("/sim/presets/offset-distance", od);
+ 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. Resetting"
- << " glideslope to zero" );
- fgSetDouble("/velocities/glideslope",0);
+ 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 the initial position based on presets (or defaults)
+bool fgInitPosition() {
+ 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.
+ 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");
+ double hdg = fgGetDouble("/sim/presets/heading-deg");
+ if ( !set_pos && !apt.empty() && !rwy_no.empty() ) {
+ // An airport + runway is requested
+ if ( fgSetPosFromAirportIDandRwy( apt, rwy_no ) ) {
+ // set tower position (a little off the heading for single
+ // runway airports)
+ fgSetTowerPosFromAirportID( apt, hdg );
+
+ set_pos = true;
+ }
+ }
+
+ if ( !set_pos && !apt.empty() ) {
+ if ( fgSetPosFromAirportIDandHdg( apt, hdg ) ) {
+ // set tower position (a little off the heading for single
+ // runway airports)
+ fgSetTowerPosFromAirportID( apt, hdg );
+
+ 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",
+ fgGetDouble("/sim/presets/heading-deg") );
+
+ return true;
+}
+
+
// General house keeping initializations
-bool fgInitGeneral( void ) {
+bool fgInitGeneral() {
string root;
#if defined(FX) && defined(XMESA)
// 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( void ) {
+bool fgInitSubsystems() {
static const SGPropertyNode *longitude
= fgGetNode("/sim/presets/longitude-deg");
static const SGPropertyNode *latitude
// Load the local scenery data
double visibility_meters = fgGetDouble("/environment/visibility-m");
- global_tile_mgr.update( longitude->getDoubleValue(),
- latitude->getDoubleValue(),
- visibility_meters );
+ global_tile_mgr.update( visibility_meters );
} else {
SG_LOG( SG_GENERAL, SG_ALERT, "Error in Tile Manager initialization!" );
exit(-1);
}
-void fgReInitSubsystems( void )
+void fgReInitSubsystems()
{
static const SGPropertyNode *longitude
= fgGetNode("/sim/presets/longitude-deg");
if ( !freeze ) {
fgSetBool("/sim/freeze/master", true);
}
-
- // Initialize the Scenery Management subsystem
- // FIXME, what really needs to get initialized here, at the time
- // this was commented out, scenery.init() was a noop
- // scenery.init();
+ // Initialize the FDM
fgInitFDM();
// allocates structures so must happen before any of the flight
projects / flightgear.git / blobdiff