1 // fg_props.cxx -- support for FlightGear properties.
3 // Written by David Megginson, started 2000.
5 // Copyright (C) 2000, 2001 David Megginson - david@megginson.com
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
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 # include <simgear/compiler.h>
27 #include <simgear/misc/exception.hxx>
31 #include <Autopilot/newauto.hxx>
32 #include <Aircraft/aircraft.hxx>
33 #include <Time/tmp.hxx>
34 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
35 #ifndef FG_OLD_WEATHER
36 # include <WeatherCM/FGLocalWeatherDatabase.h>
38 # include <Weather/weather.hxx>
40 #include <Objects/matlib.hxx>
45 #include "fg_props.hxx"
46 #include "viewmgr.hxx"
48 #if !defined(SG_HAVE_NATIVE_SGI_COMPILERS)
49 SG_USING_STD(istream);
50 SG_USING_STD(ostream);
53 static double getWindNorth ();
54 static double getWindEast ();
55 static double getWindDown ();
57 // Allow the view to be set from two axes (i.e. a joystick hat)
58 // This needs to be in FGViewer itself, somehow.
59 static double axisLong = 0.0;
60 static double axisLat = 0.0;
62 static bool winding_ccw = false; // FIXME: temporary
64 static bool fdm_data_logging = false; // FIXME: temporary
71 _set_view_from_axes ()
73 // Take no action when hat is centered
74 if ( ( axisLong < 0.01 ) &&
75 ( axisLong > -0.01 ) &&
83 /* Do all the quick and easy cases */
84 if (axisLong < 0) { // Longitudinal axis forward
85 if (axisLat == axisLong)
87 else if (axisLat == - axisLong)
89 else if (axisLat == 0)
91 } else if (axisLong > 0) { // Longitudinal axis backward
92 if (axisLat == - axisLong)
94 else if (axisLat == axisLong)
96 else if (axisLat == 0)
98 } else if (axisLong == 0) { // Longitudinal axis neutral
101 else if (axisLat > 0)
103 else return; /* And assertion failure maybe? */
106 /* Do all the difficult cases */
108 viewDir = SGD_RADIANS_TO_DEGREES * atan2 ( -axisLat, -axisLong );
109 if ( viewDir < -1 ) viewDir += 360;
111 // SG_LOG(SG_INPUT, SG_ALERT, "Joystick Lat=" << axisLat << " and Long="
112 // << axisLong << " gave angle=" << viewDir );
114 globals->get_current_view()->set_goal_view_offset(viewDir*SGD_DEGREES_TO_RADIANS);
115 // globals->get_current_view()->set_view_offset(viewDir*SGD_DEGREES_TO_RADIANS);
119 ////////////////////////////////////////////////////////////////////////
120 // Default property bindings (not yet handled by any module).
121 ////////////////////////////////////////////////////////////////////////
125 * Get the pause state of the sim.
130 return globals->get_freeze();
135 * Set the pause state of the sim.
138 setFreeze (bool freeze)
140 globals->set_freeze(freeze);
144 * Return the current aircraft directory (UIUC) as a string.
154 * Set the current aircraft directory (UIUC).
157 setAircraftDir (string dir)
159 if (getAircraftDir() != dir) {
161 // needReinit(); FIXME!!
167 * Get the current view offset in degrees.
172 return (globals->get_current_view()
173 ->get_view_offset() * SGD_RADIANS_TO_DEGREES);
178 setViewOffset (double offset)
180 globals->get_current_view()->set_view_offset(offset * SGD_DEGREES_TO_RADIANS);
186 return (globals->get_current_view()
187 ->get_goal_view_offset() * SGD_RADIANS_TO_DEGREES);
191 setGoalViewOffset (double offset)
193 while ( offset < 0 ) {
196 while ( offset > 360.0 ) {
199 // Snap to center if we are close
200 if ( fabs(offset) < 1.0 || fabs(offset) > 359.0 ) {
204 globals->get_current_view()
205 ->set_goal_view_offset(offset * SGD_DEGREES_TO_RADIANS);
210 * Pilot position offset from CG.
213 getPilotPositionXOffset ()
215 FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
216 float * offset = pilot_view->get_pilot_offset();
221 setPilotPositionXOffset (float x)
223 FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
224 float * offset = pilot_view->get_pilot_offset();
225 pilot_view->set_pilot_offset(x, offset[1], offset[2]);
229 getPilotPositionYOffset ()
231 FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
232 float * offset = pilot_view->get_pilot_offset();
237 setPilotPositionYOffset (float y)
239 FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
240 float * offset = pilot_view->get_pilot_offset();
241 pilot_view->set_pilot_offset(offset[0], y, offset[2]);
245 getPilotPositionZOffset ()
247 FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
248 float * offset = pilot_view->get_pilot_offset();
253 setPilotPositionZOffset (float z)
255 FGViewer * pilot_view = globals->get_viewmgr()->get_view(0);
256 float * offset = pilot_view->get_pilot_offset();
257 pilot_view->set_pilot_offset(offset[0], offset[1], z);
262 * Return the current Zulu time.
269 struct tm * t = globals->get_time_params()->getGmt();
270 sprintf(buf, "%.4d-%.2d-%.2dT%.2d:%.2d:%.2d",
271 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
272 t->tm_hour, t->tm_min, t->tm_sec);
279 * Set the current Zulu time.
282 setDateString (string date_string)
284 SGTime * st = globals->get_time_params();
285 struct tm * current_time = st->getGmt();
288 // Scan for basic ISO format
289 // YYYY-MM-DDTHH:MM:SS
290 int ret = sscanf(date_string.c_str(), "%d-%d-%dT%d:%d:%d",
291 &(new_time.tm_year), &(new_time.tm_mon),
292 &(new_time.tm_mday), &(new_time.tm_hour),
293 &(new_time.tm_min), &(new_time.tm_sec));
295 // Be pretty picky about this, so
296 // that strange things don't happen
297 // if the save file has been edited
300 SG_LOG(SG_INPUT, SG_ALERT, "Date/time string " << date_string
301 << " not in YYYY-MM-DDTHH:MM:SS format; skipped");
305 // OK, it looks like we got six
306 // values, one way or another.
307 new_time.tm_year -= 1900;
308 new_time.tm_mon -= 1;
310 // Now, tell flight gear to use
311 // the new time. This was far
312 // too difficult, by the way.
314 mktime(&new_time) - mktime(current_time) + globals->get_warp();
315 double lon = current_aircraft.fdm_state->get_Longitude();
316 double lat = current_aircraft.fdm_state->get_Latitude();
317 globals->set_warp(warp);
318 st->update(lon, lat, warp);
319 fgUpdateSkyAndLightingParams();
323 * Return the GMT as a string.
330 struct tm * t = globals->get_time_params()->getGmt();
331 sprintf(buf, " %.2d:%.2d:%.2d",
332 t->tm_hour, t->tm_min, t->tm_sec);
339 * Get the texture rendering state.
344 return (material_lib.get_step() == 0);
349 * Set the texture rendering state.
352 setTextures (bool textures)
355 material_lib.set_step(0);
357 material_lib.set_step(1);
362 * Return the magnetic variation
367 return globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
372 * Return the magnetic dip
377 return globals->get_mag()->get_magdip() * SGD_RADIANS_TO_DEGREES;
382 * Return the current heading in degrees.
387 return current_aircraft.fdm_state->get_Psi() * SGD_RADIANS_TO_DEGREES - getMagVar();
392 * Return the current engine0 rpm
397 if ( current_aircraft.fdm_state->get_engine(0) != NULL ) {
398 return current_aircraft.fdm_state->get_engine(0)->get_RPM();
406 * Return the current engine0 EGT.
411 if ( current_aircraft.fdm_state->get_engine(0) != NULL ) {
412 return current_aircraft.fdm_state->get_engine(0)->get_EGT();
419 * Return the current engine0 CHT.
424 if ( current_aircraft.fdm_state->get_engine(0) != NULL ) {
425 return current_aircraft.fdm_state->get_engine(0)->get_CHT();
432 * Return the current engine0 Manifold Pressure.
437 if ( current_aircraft.fdm_state->get_engine(0) != NULL ) {
438 return current_aircraft.fdm_state->get_engine(0)->get_Manifold_Pressure();
446 * Return the current engine0 fuel flow
451 if ( current_aircraft.fdm_state->get_engine(0) != NULL ) {
452 return current_aircraft.fdm_state->get_engine(0)->get_Fuel_Flow();
459 * Return the fuel level in tank 1
464 return current_aircraft.fdm_state->get_Tank1Fuel();
468 setTank1Fuel ( double gals )
470 current_aircraft.fdm_state->set_Tank1Fuel( gals );
474 * Return the fuel level in tank 2
479 return current_aircraft.fdm_state->get_Tank2Fuel();
483 setTank2Fuel ( double gals )
485 current_aircraft.fdm_state->set_Tank2Fuel( gals );
490 * Get the autopilot altitude lock (true=on).
495 return (current_autopilot->get_AltitudeEnabled() &&
496 current_autopilot->get_AltitudeMode()
497 == FGAutopilot::FG_ALTITUDE_LOCK);
502 * Set the autopilot altitude lock (true=on).
505 setAPAltitudeLock (bool lock)
507 current_autopilot->set_AltitudeMode(FGAutopilot::FG_ALTITUDE_LOCK);
508 current_autopilot->set_AltitudeEnabled(lock);
513 * Get the autopilot target altitude in feet.
518 return current_autopilot->get_TargetAltitude() * SG_METER_TO_FEET;
523 * Set the autopilot target altitude in feet.
526 setAPAltitude (double altitude)
528 current_autopilot->set_TargetAltitude( altitude * SG_FEET_TO_METER );
532 * Get the autopilot altitude lock (true=on).
537 return (current_autopilot->get_AltitudeEnabled() &&
538 (current_autopilot->get_AltitudeMode()
539 == FGAutopilot::FG_ALTITUDE_GS1));
544 * Set the autopilot altitude lock (true=on).
547 setAPGSLock (bool lock)
549 current_autopilot->set_AltitudeMode(FGAutopilot::FG_ALTITUDE_GS1);
550 current_autopilot->set_AltitudeEnabled(lock);
555 * Get the autopilot terrain lock (true=on).
560 return (current_autopilot->get_AltitudeEnabled() &&
561 (current_autopilot->get_AltitudeMode()
562 == FGAutopilot::FG_ALTITUDE_TERRAIN));
567 * Set the autopilot terrain lock (true=on).
570 setAPTerrainLock (bool lock)
572 current_autopilot->set_AltitudeMode(FGAutopilot::FG_ALTITUDE_TERRAIN);
573 current_autopilot->set_AltitudeEnabled(lock);
574 current_autopilot->set_TargetAGL(
575 current_aircraft.fdm_state->get_Altitude_AGL() * SG_FEET_TO_METER
577 cout << "Target AGL = "
578 << current_aircraft.fdm_state->get_Altitude_AGL() * SG_FEET_TO_METER
584 * Get the autopilot target altitude in feet.
589 return current_autopilot->get_TargetClimbRate() * SG_METER_TO_FEET;
594 * Set the autopilot target altitude in feet.
597 setAPClimb (double rate)
599 current_autopilot->set_TargetClimbRate( rate * SG_FEET_TO_METER );
604 * Get the autopilot heading lock (true=on).
610 (current_autopilot->get_HeadingEnabled() &&
611 current_autopilot->get_HeadingMode() == DEFAULT_AP_HEADING_LOCK);
616 * Set the autopilot heading lock (true=on).
619 setAPHeadingLock (bool lock)
622 current_autopilot->set_HeadingMode(DEFAULT_AP_HEADING_LOCK);
623 current_autopilot->set_HeadingEnabled(true);
625 current_autopilot->set_HeadingEnabled(false);
631 * Get the autopilot heading bug in degrees.
636 return current_autopilot->get_DGTargetHeading();
641 * Set the autopilot heading bug in degrees.
644 setAPHeadingBug (double heading)
646 current_autopilot->set_DGTargetHeading( heading );
651 * Get the autopilot wing leveler lock (true=on).
657 (current_autopilot->get_HeadingEnabled() &&
658 current_autopilot->get_HeadingMode() == FGAutopilot::FG_TC_HEADING_LOCK);
663 * Set the autopilot wing leveler lock (true=on).
666 setAPWingLeveler (bool lock)
669 current_autopilot->set_HeadingMode(FGAutopilot::FG_TC_HEADING_LOCK);
670 current_autopilot->set_HeadingEnabled(true);
672 current_autopilot->set_HeadingEnabled(false);
677 * Return true if the autopilot is locked to NAV1.
683 (current_autopilot->get_HeadingEnabled() &&
684 current_autopilot->get_HeadingMode() == FGAutopilot::FG_HEADING_NAV1);
689 * Set the autopilot NAV1 lock.
692 setAPNAV1Lock (bool lock)
695 current_autopilot->set_HeadingMode(FGAutopilot::FG_HEADING_NAV1);
696 current_autopilot->set_HeadingEnabled(true);
697 } else if (current_autopilot->get_HeadingMode() ==
698 FGAutopilot::FG_HEADING_NAV1) {
699 current_autopilot->set_HeadingEnabled(false);
704 * Get the autopilot autothrottle lock.
707 getAPAutoThrottleLock ()
709 return current_autopilot->get_AutoThrottleEnabled();
714 * Set the autothrottle lock.
717 setAPAutoThrottleLock (bool lock)
719 current_autopilot->set_AutoThrottleEnabled(lock);
725 getAPRudderControl ()
727 if (getAPHeadingLock())
728 return current_autopilot->get_TargetHeading();
730 return globals->get_controls()->get_rudder();
735 setAPRudderControl (double value)
737 if (getAPHeadingLock()) {
738 SG_LOG(SG_GENERAL, SG_DEBUG, "setAPRudderControl " << value );
739 value -= current_autopilot->get_TargetHeading();
740 current_autopilot->HeadingAdjust(value < 0.0 ? -1.0 : 1.0);
742 globals->get_controls()->set_rudder(value);
748 getAPElevatorControl ()
750 if (getAPAltitudeLock())
751 return current_autopilot->get_TargetAltitude();
753 return globals->get_controls()->get_elevator();
758 setAPElevatorControl (double value)
760 if (getAPAltitudeLock()) {
761 SG_LOG(SG_GENERAL, SG_DEBUG, "setAPElevatorControl " << value );
762 value -= current_autopilot->get_TargetAltitude();
763 current_autopilot->AltitudeAdjust(value < 0.0 ? 100.0 : -100.0);
765 globals->get_controls()->set_elevator(value);
771 getAPThrottleControl ()
773 if (getAPAutoThrottleLock())
774 return 0.0; // always resets
776 return globals->get_controls()->get_throttle(0);
781 setAPThrottleControl (double value)
783 if (getAPAutoThrottleLock())
784 current_autopilot->AutoThrottleAdjust(value < 0.0 ? -0.01 : 0.01);
786 globals->get_controls()->set_throttle(0, value);
791 * Get the current visibility (meters).
796 #ifndef FG_OLD_WEATHER
797 return WeatherDatabase->getWeatherVisibility();
799 return current_weather.get_visibility();
805 * Set the current visibility (meters).
808 setVisibility (double visibility)
810 #ifndef FG_OLD_WEATHER
811 WeatherDatabase->setWeatherVisibility(visibility);
813 current_weather.set_visibility(visibility);
818 * Get the current wind north velocity (feet/second).
823 return current_aircraft.fdm_state->get_V_north_airmass();
828 * Set the current wind north velocity (feet/second).
831 setWindNorth (double speed)
833 current_aircraft.fdm_state
834 ->set_Velocities_Local_Airmass(speed, getWindEast(), getWindDown());
839 * Get the current wind east velocity (feet/second).
844 return current_aircraft.fdm_state->get_V_east_airmass();
849 * Set the current wind east velocity (feet/second).
852 setWindEast (double speed)
854 cout << "Set wind-east to " << speed << endl;
855 current_aircraft.fdm_state->set_Velocities_Local_Airmass(getWindNorth(),
862 * Get the current wind down velocity (feet/second).
867 return current_aircraft.fdm_state->get_V_down_airmass();
872 * Set the current wind down velocity (feet/second).
875 setWindDown (double speed)
877 current_aircraft.fdm_state->set_Velocities_Local_Airmass(getWindNorth(),
885 return globals->get_current_view()->get_fov();
891 globals->get_current_view()->set_fov( fov );
897 return globals->get_warp();
903 globals->set_warp(warp);
909 return globals->get_warp_delta();
913 setWarpDelta (long delta)
915 globals->set_warp_delta(delta);
919 setViewAxisLong (double axis)
925 setViewAxisLat (double axis)
937 setWindingCCW (bool state)
941 glFrontFace ( GL_CCW );
943 glFrontFace ( GL_CW );
949 #if defined(FX) && !defined(WIN32)
950 return global_fullscreen;
957 setFullScreen (bool state)
959 #if defined(FX) && !defined(WIN32)
960 global_fullscreen = state;
961 # if defined(XMESA_FX_FULLSCREEN) && defined(XMESA_FX_WINDOW)
962 XMesaSetFXmode( global_fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW );
970 return fdm_data_logging;
974 setFDMDataLogging (bool state)
976 // kludge; no getter or setter available
977 if (state != fdm_data_logging) {
978 fgToggleFDMdataLogging();
979 fdm_data_logging = state;
984 ////////////////////////////////////////////////////////////////////////
985 // Tie the properties.
986 ////////////////////////////////////////////////////////////////////////
992 fgTie("/sim/freeze", getFreeze, setFreeze);
993 fgTie("/sim/aircraft-dir", getAircraftDir, setAircraftDir);
994 fgTie("/sim/view/offset-deg", getViewOffset, setViewOffset);
995 fgSetArchivable("/sim/view/offset-deg");
996 fgTie("/sim/view/goal-offset-deg", getGoalViewOffset, setGoalViewOffset);
997 fgSetArchivable("/sim/view/goal-offset-deg");
998 fgTie("/sim/view/pilot/x-offset-m",
999 getPilotPositionXOffset, setPilotPositionXOffset);
1000 fgSetArchivable("/sim/view/pilot/x-offset-m");
1001 fgTie("/sim/view/pilot/y-offset-m",
1002 getPilotPositionYOffset, setPilotPositionYOffset);
1003 fgSetArchivable("/sim/view/pilot/y-offset-m");
1004 fgTie("/sim/view/pilot/z-offset-m",
1005 getPilotPositionZOffset, setPilotPositionZOffset);
1006 fgSetArchivable("/sim/view/pilot/z-offset-m");
1007 fgTie("/sim/time/gmt", getDateString, setDateString);
1008 fgSetArchivable("/sim/time/gmt");
1009 fgTie("/sim/time/gmt-string", getGMTString);
1010 fgTie("/sim/rendering/textures", getTextures, setTextures);
1013 fgTie("/orientation/heading-magnetic-deg", getHeadingMag);
1016 fgTie("/engines/engine[0]/rpm", getRPM);
1017 fgTie("/engines/engine[0]/egt-degf", getEGT);
1018 fgTie("/engines/engine[0]/cht-degf", getCHT);
1019 fgTie("/engines/engine[0]/mp-osi", getMP);
1020 fgTie("/engines/engine[0]/fuel-flow-gph", getFuelFlow);
1023 fgTie("/consumables/fuel/tank[0]/level-gal_us",
1024 getTank1Fuel, setTank1Fuel, false);
1025 fgSetArchivable("/consumables/fuel/tank[0]/level-gal_us");
1026 fgTie("/consumables/fuel/tank[1]/level-gal_us",
1027 getTank2Fuel, setTank2Fuel, false);
1028 fgSetArchivable("/consumables/fuel/tank[1]/level-gal_us");
1031 fgTie("/autopilot/locks/altitude", getAPAltitudeLock, setAPAltitudeLock);
1032 fgSetArchivable("/autopilot/locks/altitude");
1033 fgTie("/autopilot/settings/altitude-ft", getAPAltitude, setAPAltitude);
1034 fgSetArchivable("/autopilot/settings/altitude-ft");
1035 fgTie("/autopilot/locks/glide-slope", getAPGSLock, setAPGSLock);
1036 fgSetArchivable("/autopilot/locks/glide-slope");
1037 fgTie("/autopilot/locks/terrain", getAPTerrainLock, setAPTerrainLock);
1038 fgSetArchivable("/autopilot/locks/terrain");
1039 fgTie("/autopilot/settings/agl-ft", getAPAltitude, setAPAltitude);
1040 fgSetArchivable("/autopilot/settings/agl-ft");
1041 fgTie("/autopilot/settings/climb-rate-fpm", getAPClimb, setAPClimb, false);
1042 fgSetArchivable("/autopilot/settings/climb-rate-fpm");
1043 fgTie("/autopilot/locks/heading", getAPHeadingLock, setAPHeadingLock);
1044 fgSetArchivable("/autopilot/locks/heading");
1045 fgTie("/autopilot/settings/heading-bug-deg",
1046 getAPHeadingBug, setAPHeadingBug, false);
1047 fgSetArchivable("/autopilot/settings/heading-bug-deg");
1048 fgTie("/autopilot/locks/wing-leveler", getAPWingLeveler, setAPWingLeveler);
1049 fgSetArchivable("/autopilot/locks/wing-leveler");
1050 fgTie("/autopilot/locks/nav[0]", getAPNAV1Lock, setAPNAV1Lock);
1051 fgSetArchivable("/autopilot/locks/nav[0]");
1052 fgTie("/autopilot/locks/auto-throttle",
1053 getAPAutoThrottleLock, setAPAutoThrottleLock);
1054 fgSetArchivable("/autopilot/locks/auto-throttle");
1055 fgTie("/autopilot/control-overrides/rudder",
1056 getAPRudderControl, setAPRudderControl);
1057 fgSetArchivable("/autopilot/control-overrides/rudder");
1058 fgTie("/autopilot/control-overrides/elevator",
1059 getAPElevatorControl, setAPElevatorControl);
1060 fgSetArchivable("/autopilot/control-overrides/elevator");
1061 fgTie("/autopilot/control-overrides/throttle",
1062 getAPThrottleControl, setAPThrottleControl);
1063 fgSetArchivable("/autopilot/control-overrides/throttle");
1066 fgTie("/environment/visibility-m", getVisibility, setVisibility);
1067 fgSetArchivable("/environment/visibility-m");
1068 fgTie("/environment/wind-north-fps", getWindNorth, setWindNorth);
1069 fgSetArchivable("/environment/wind-north-fps");
1070 fgTie("/environment/wind-east-fps", getWindEast, setWindEast);
1071 fgSetArchivable("/environment/wind-east-fps");
1072 fgTie("/environment/wind-down-fps", getWindDown, setWindDown);
1073 fgSetArchivable("/environment/wind-down-fps");
1075 fgTie("/environment/magnetic-variation-deg", getMagVar);
1076 fgTie("/environment/magnetic-dip-deg", getMagDip);
1079 fgTie("/sim/field-of-view", getFOV, setFOV);
1080 fgSetArchivable("/sim/field-of-view");
1081 fgTie("/sim/time/warp", getWarp, setWarp, false);
1082 fgTie("/sim/time/warp-delta", getWarpDelta, setWarpDelta);
1083 fgTie("/sim/view/axes/long", (double(*)())0, setViewAxisLong);
1084 fgTie("/sim/view/axes/lat", (double(*)())0, setViewAxisLat);
1086 // Misc. Temporary junk.
1087 fgTie("/sim/temp/winding-ccw", getWindingCCW, setWindingCCW);
1088 fgTie("/sim/temp/full-screen", getFullScreen, setFullScreen);
1089 fgTie("/sim/temp/fdm-data-logging", getFDMDataLogging, setFDMDataLogging);
1097 _set_view_from_axes();
1102 ////////////////////////////////////////////////////////////////////////
1103 // Save and restore.
1104 ////////////////////////////////////////////////////////////////////////
1108 * Save the current state of the simulator to a stream.
1111 fgSaveFlight (ostream &output)
1114 writeProperties(output, globals->get_props());
1115 } catch (const sg_exception &e) {
1116 guiErrorMessage("Error saving flight: ", e);
1124 * Restore the current state of the simulator from a stream.
1127 fgLoadFlight (istream &input)
1129 SGPropertyNode props;
1131 readProperties(input, &props);
1132 } catch (const sg_exception &e) {
1133 guiErrorMessage("Error reading saved flight: ", e);
1136 copyProperties(&props, globals->get_props());
1137 // When loading a flight, make it the
1138 // new initial state.
1139 globals->saveInitialState();
1145 ////////////////////////////////////////////////////////////////////////
1146 // Implementation of FGCondition.
1147 ////////////////////////////////////////////////////////////////////////
1149 FGCondition::FGCondition ()
1153 FGCondition::~FGCondition ()
1159 ////////////////////////////////////////////////////////////////////////
1160 // Implementation of FGPropertyCondition.
1161 ////////////////////////////////////////////////////////////////////////
1163 FGPropertyCondition::FGPropertyCondition (const string &propname)
1164 : _node(fgGetNode(propname, true))
1168 FGPropertyCondition::~FGPropertyCondition ()
1174 ////////////////////////////////////////////////////////////////////////
1175 // Implementation of FGNotCondition.
1176 ////////////////////////////////////////////////////////////////////////
1178 FGNotCondition::FGNotCondition (FGCondition * condition)
1179 : _condition(condition)
1183 FGNotCondition::~FGNotCondition ()
1189 FGNotCondition::test () const
1191 return !(_condition->test());
1196 ////////////////////////////////////////////////////////////////////////
1197 // Implementation of FGAndCondition.
1198 ////////////////////////////////////////////////////////////////////////
1200 FGAndCondition::FGAndCondition ()
1204 FGAndCondition::~FGAndCondition ()
1206 for (unsigned int i = 0; i < _conditions.size(); i++)
1207 delete _conditions[i];
1211 FGAndCondition::test () const
1213 int nConditions = _conditions.size();
1214 for (int i = 0; i < nConditions; i++) {
1215 if (!_conditions[i]->test())
1222 FGAndCondition::addCondition (FGCondition * condition)
1224 _conditions.push_back(condition);
1229 ////////////////////////////////////////////////////////////////////////
1230 // Implementation of FGOrCondition.
1231 ////////////////////////////////////////////////////////////////////////
1233 FGOrCondition::FGOrCondition ()
1237 FGOrCondition::~FGOrCondition ()
1239 for (unsigned int i = 0; i < _conditions.size(); i++)
1240 delete _conditions[i];
1244 FGOrCondition::test () const
1246 int nConditions = _conditions.size();
1247 for (int i = 0; i < nConditions; i++) {
1248 if (_conditions[i]->test())
1255 FGOrCondition::addCondition (FGCondition * condition)
1257 _conditions.push_back(condition);
1262 ////////////////////////////////////////////////////////////////////////
1263 // Implementation of FGComparisonCondition.
1264 ////////////////////////////////////////////////////////////////////////
1267 doComparison (const SGPropertyNode * left, const SGPropertyNode *right)
1269 switch (left->getType()) {
1270 case SGPropertyNode::BOOL: {
1271 bool v1 = left->getBoolValue();
1272 bool v2 = right->getBoolValue();
1274 return FGComparisonCondition::LESS_THAN;
1276 return FGComparisonCondition::GREATER_THAN;
1278 return FGComparisonCondition::EQUALS;
1281 case SGPropertyNode::INT: {
1282 int v1 = left->getIntValue();
1283 int v2 = right->getIntValue();
1285 return FGComparisonCondition::LESS_THAN;
1287 return FGComparisonCondition::GREATER_THAN;
1289 return FGComparisonCondition::EQUALS;
1292 case SGPropertyNode::LONG: {
1293 long v1 = left->getLongValue();
1294 long v2 = right->getLongValue();
1296 return FGComparisonCondition::LESS_THAN;
1298 return FGComparisonCondition::GREATER_THAN;
1300 return FGComparisonCondition::EQUALS;
1303 case SGPropertyNode::FLOAT: {
1304 float v1 = left->getFloatValue();
1305 float v2 = right->getFloatValue();
1307 return FGComparisonCondition::LESS_THAN;
1309 return FGComparisonCondition::GREATER_THAN;
1311 return FGComparisonCondition::EQUALS;
1314 case SGPropertyNode::DOUBLE: {
1315 double v1 = left->getDoubleValue();
1316 double v2 = right->getDoubleValue();
1318 return FGComparisonCondition::LESS_THAN;
1320 return FGComparisonCondition::GREATER_THAN;
1322 return FGComparisonCondition::EQUALS;
1325 case SGPropertyNode::STRING:
1326 case SGPropertyNode::NONE:
1327 case SGPropertyNode::UNSPECIFIED: {
1328 string v1 = left->getStringValue();
1329 string v2 = right->getStringValue();
1331 return FGComparisonCondition::LESS_THAN;
1333 return FGComparisonCondition::GREATER_THAN;
1335 return FGComparisonCondition::EQUALS;
1339 throw sg_exception("Unrecognized node type");
1344 FGComparisonCondition::FGComparisonCondition (Type type, bool reverse)
1353 FGComparisonCondition::~FGComparisonCondition ()
1355 delete _right_value;
1359 FGComparisonCondition::test () const
1361 // Always fail if incompletely specified
1362 if (_left_property == 0 ||
1363 (_right_property == 0 && _right_value == 0))
1366 // Get LESS_THAN, EQUALS, or GREATER_THAN
1368 doComparison(_left_property,
1369 (_right_property != 0 ? _right_property : _right_value));
1371 return (cmp == _type);
1373 return (cmp != _type);
1377 FGComparisonCondition::setLeftProperty (const string &propname)
1379 _left_property = fgGetNode(propname, true);
1383 FGComparisonCondition::setRightProperty (const string &propname)
1385 delete _right_value;
1387 _right_property = fgGetNode(propname, true);
1391 FGComparisonCondition::setRightValue (const SGPropertyNode *node)
1393 _right_property = 0;
1394 delete _right_value;
1395 _right_value = new SGPropertyNode(*node);
1400 ////////////////////////////////////////////////////////////////////////
1401 // Read a condition and use it if necessary.
1402 ////////////////////////////////////////////////////////////////////////
1404 // Forward declaration
1405 static FGCondition * readCondition (const SGPropertyNode * node);
1407 static FGCondition *
1408 readPropertyCondition (const SGPropertyNode * node)
1410 return new FGPropertyCondition(node->getStringValue());
1413 static FGCondition *
1414 readNotCondition (const SGPropertyNode * node)
1416 int nChildren = node->nChildren();
1417 for (int i = 0; i < nChildren; i++) {
1418 const SGPropertyNode * child = node->getChild(i);
1419 FGCondition * condition = readCondition(child);
1421 return new FGNotCondition(condition);
1423 SG_LOG(SG_COCKPIT, SG_ALERT, "Panel: empty 'not' condition");
1427 static FGCondition *
1428 readAndConditions (const SGPropertyNode * node)
1430 FGAndCondition * andCondition = new FGAndCondition;
1431 int nChildren = node->nChildren();
1432 for (int i = 0; i < nChildren; i++) {
1433 const SGPropertyNode * child = node->getChild(i);
1434 FGCondition * condition = readCondition(child);
1436 andCondition->addCondition(condition);
1438 return andCondition;
1441 static FGCondition *
1442 readOrConditions (const SGPropertyNode * node)
1444 FGOrCondition * orCondition = new FGOrCondition;
1445 int nChildren = node->nChildren();
1446 for (int i = 0; i < nChildren; i++) {
1447 const SGPropertyNode * child = node->getChild(i);
1448 FGCondition * condition = readCondition(child);
1450 orCondition->addCondition(condition);
1455 static FGCondition *
1456 readComparison (const SGPropertyNode * node,
1457 FGComparisonCondition::Type type,
1460 FGComparisonCondition * condition = new FGComparisonCondition(type, reverse);
1461 condition->setLeftProperty(node->getStringValue("property[0]"));
1462 if (node->hasValue("property[1]"))
1463 condition->setRightProperty(node->getStringValue("property[1]"));
1465 condition->setRightValue(node->getChild("value", 0));
1470 static FGCondition *
1471 readCondition (const SGPropertyNode * node)
1473 const string &name = node->getName();
1474 if (name == "property")
1475 return readPropertyCondition(node);
1476 else if (name == "not")
1477 return readNotCondition(node);
1478 else if (name == "and")
1479 return readAndConditions(node);
1480 else if (name == "or")
1481 return readOrConditions(node);
1482 else if (name == "less-than")
1483 return readComparison(node, FGComparisonCondition::LESS_THAN, false);
1484 else if (name == "less-than-equals")
1485 return readComparison(node, FGComparisonCondition::GREATER_THAN, true);
1486 else if (name == "greater-than")
1487 return readComparison(node, FGComparisonCondition::GREATER_THAN, false);
1488 else if (name == "greater-than-equals")
1489 return readComparison(node, FGComparisonCondition::LESS_THAN, true);
1490 else if (name == "equals")
1491 return readComparison(node, FGComparisonCondition::EQUALS, false);
1492 else if (name == "not-equals")
1493 return readComparison(node, FGComparisonCondition::EQUALS, true);
1500 ////////////////////////////////////////////////////////////////////////
1501 // Implementation of FGConditional.
1502 ////////////////////////////////////////////////////////////////////////
1504 FGConditional::FGConditional ()
1509 FGConditional::~FGConditional ()
1515 FGConditional::setCondition (FGCondition * condition)
1518 _condition = condition;
1522 FGConditional::test () const
1524 return ((_condition == 0) || _condition->test());
1529 // The top-level is always an implicit 'and' group
1531 fgReadCondition (const SGPropertyNode * node)
1533 return readAndConditions(node);
1537 // end of fg_props.cxx