2 // fg_init.cxx -- Flight Gear top level initialization routines
4 // Written by Curtis Olson, started August 1997.
6 // Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 // For BC 5.01 this must be included before OpenGL includes.
31 #ifdef FG_MATH_EXCEPTION_CLASH
36 #include <simgear/xgl/xgl.h>
41 // work around a stdc++ lib bug in some versions of linux, but doesn't
42 // seem to hurt to have this here for all versions of Linux.
44 # define _G_NO_EXTERN_TEMPLATES
47 #include <simgear/compiler.h>
51 #include <simgear/constants.h>
52 #include <simgear/debug/logstream.hxx>
53 #include <simgear/math/fg_geodesy.hxx>
54 #include <simgear/math/point3d.hxx>
55 #include <simgear/math/polar3d.hxx>
56 #include <simgear/misc/fgpath.hxx>
57 #include <simgear/timing/sg_time.hxx>
59 #include <Aircraft/aircraft.hxx>
60 #include <Airports/simple.hxx>
61 #include <Autopilot/auto_gui.hxx>
62 #include <Autopilot/newauto.hxx>
63 #include <Cockpit/cockpit.hxx>
64 #include <Cockpit/radiostack.hxx>
65 #include <Cockpit/panel.hxx>
66 #include <Cockpit/sp_panel.hxx>
67 #include <FDM/Balloon.h>
68 #include <FDM/External.hxx>
69 #include <FDM/JSBsim.hxx>
70 #include <FDM/LaRCsim.hxx>
71 #include <FDM/MagicCarpet.hxx>
72 #include <Include/general.hxx>
73 #include <Joystick/joystick.hxx>
74 #include <Objects/matlib.hxx>
75 #include <Navaids/fixlist.hxx>
76 #include <Navaids/ilslist.hxx>
77 #include <Navaids/navlist.hxx>
78 #include <Scenery/scenery.hxx>
79 #include <Scenery/tilemgr.hxx>
80 #include <Time/event.hxx>
81 #include <Time/light.hxx>
82 #include <Time/sunpos.hxx>
83 #include <Time/moonpos.hxx>
84 #include <Time/tmp.hxx>
86 #ifndef FG_OLD_WEATHER
87 # include <WeatherCM/FGLocalWeatherDatabase.h>
89 # include <Weather/weather.hxx>
92 #include "fg_init.hxx"
94 #include "options.hxx"
98 #if defined(FX) && defined(XMESA)
102 FG_USING_STD(string);
104 extern const char *default_root;
107 // Read in configuration (file and command line)
108 bool fgInitConfig ( int argc, char **argv ) {
109 // Attempt to locate and parse a config file
110 // First check fg_root
111 FGPath config( current_options.get_fg_root() );
112 config.append( "system.fgfsrc" );
113 current_options.parse_config_file( config.str() );
115 // Next check home directory
116 char* envp = ::getenv( "HOME" );
117 if ( envp != NULL ) {
119 config.append( ".fgfsrc" );
120 current_options.parse_config_file( config.str() );
123 // Parse remaining command line options
124 // These will override anything specified in a config file
125 if ( current_options.parse_command_line(argc, argv) !=
126 fgOPTIONS::FG_OPTIONS_OK )
128 // Something must have gone horribly wrong with the command
129 // line parsing or maybe the user just requested help ... :-)
130 current_options.usage();
131 FG_LOG( FG_GENERAL, FG_ALERT, "\nExiting ...");
139 // Set initial position and orientation
140 bool fgInitPosition( void ) {
144 f = current_aircraft.fdm_state;
146 id = current_options.get_airport_id();
148 // set initial position from airport id
150 FGPath path( current_options.get_fg_root() );
151 path.append( "Airports" );
152 path.append( "simple.mk4" );
153 FGAirports airports( path.c_str() );
156 FG_LOG( FG_GENERAL, FG_INFO,
157 "Attempting to set starting position from airport code "
160 // FGPath inpath( current_options.get_fg_root() );
161 // inpath.append( "Airports" );
162 // inpath.append( "apt_simple" );
163 // airports.load( inpath.c_str() );
165 // FGPath outpath( current_options.get_fg_root() );
166 // outpath.append( "Airports" );
167 // outpath.append( "simple.gdbm" );
168 // airports.dump_gdbm( outpath.c_str() );
170 if ( ! airports.search( id, &a ) ) {
171 FG_LOG( FG_GENERAL, FG_ALERT,
172 "Failed to find " << id << " in database." );
175 f->set_Longitude( a.longitude * DEG_TO_RAD );
176 f->set_Latitude( a.latitude * DEG_TO_RAD );
179 // set initial position from default or command line coordinates
181 f->set_Longitude( current_options.get_lon() * DEG_TO_RAD );
182 f->set_Latitude( current_options.get_lat() * DEG_TO_RAD );
185 FG_LOG( FG_GENERAL, FG_INFO,
186 "starting altitude is = " << current_options.get_altitude() );
188 f->set_Altitude( current_options.get_altitude() * METER_TO_FEET );
189 fgFDMSetGroundElevation( current_options.get_flight_model(),
190 (f->get_Altitude() - 3.758099) * FEET_TO_METER );
192 FG_LOG( FG_GENERAL, FG_INFO,
193 "Initial position is: ("
194 << (f->get_Longitude() * RAD_TO_DEG) << ", "
195 << (f->get_Latitude() * RAD_TO_DEG) << ", "
196 << (f->get_Altitude() * FEET_TO_METER) << ")" );
202 // General house keeping initializations
203 bool fgInitGeneral( void ) {
206 #if defined(FX) && defined(XMESA)
207 char *mesa_win_state;
210 FG_LOG( FG_GENERAL, FG_INFO, "General Initialization" );
211 FG_LOG( FG_GENERAL, FG_INFO, "======= ==============" );
213 root = current_options.get_fg_root();
214 if ( ! root.length() ) {
215 // No root path set? Then bail ...
216 FG_LOG( FG_GENERAL, FG_ALERT,
217 "Cannot continue without environment variable FG_ROOT"
218 << "being defined." );
221 FG_LOG( FG_GENERAL, FG_INFO, "FG_ROOT = " << '"' << root << '"' << endl );
223 #if defined(FX) && defined(XMESA)
224 // initialize full screen flag
225 global_fullscreen = false;
226 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
227 // Test for the MESA_GLX_FX env variable
228 if ( (mesa_win_state = getenv( "MESA_GLX_FX" )) != NULL) {
229 // test if we are fullscreen mesa/glide
230 if ( (mesa_win_state[0] == 'f') ||
231 (mesa_win_state[0] == 'F') ) {
232 global_fullscreen = true;
242 // This is the top level init routine which calls all the other
243 // initialization routines. If you are adding a subsystem to flight
244 // gear, its initialization call should located in this routine.
245 // Returns non-zero if a problem encountered.
246 bool fgInitSubsystems( void ) {
247 fgLIGHT *l = &cur_light_params;
248 SGTime *t = SGTime::cur_time_params;
250 FG_LOG( FG_GENERAL, FG_INFO, "Initialize Subsystems");
251 FG_LOG( FG_GENERAL, FG_INFO, "========== ==========");
253 if ( current_options.get_flight_model() == FGInterface::FG_LARCSIM ) {
254 cur_fdm_state = new FGLaRCsim;
255 } else if ( current_options.get_flight_model() == FGInterface::FG_JSBSIM ) {
256 cur_fdm_state = new FGJSBsim;
257 } else if ( current_options.get_flight_model() ==
258 FGInterface::FG_BALLOONSIM ) {
259 cur_fdm_state = new FGBalloonSim;
260 } else if ( current_options.get_flight_model() ==
261 FGInterface::FG_MAGICCARPET ) {
262 cur_fdm_state = new FGMagicCarpet;
263 } else if ( current_options.get_flight_model() ==
264 FGInterface::FG_EXTERNAL ) {
265 cur_fdm_state = new FGExternal;
267 FG_LOG( FG_GENERAL, FG_ALERT,
268 "No flight model, can't init aircraft" );
272 // allocates structures so must happen before any of the flight
273 // model or control parameters are set
274 fgAircraftInit(); // In the future this might not be the case.
276 // set the initial position
279 // Initialize the material property lib
280 FGPath mpath( current_options.get_fg_root() );
281 mpath.append( "materials" );
282 if ( material_lib.load( mpath.str() ) ) {
284 FG_LOG( FG_GENERAL, FG_ALERT, "Error loading material lib!" );
288 // Initialize the Scenery Management subsystem
289 if ( fgSceneryInit() ) {
290 // Material lib initialized ok.
292 FG_LOG( FG_GENERAL, FG_ALERT, "Error in Scenery initialization!" );
296 if( global_tile_mgr.init() ) {
297 // Load the local scenery data
298 global_tile_mgr.update( cur_fdm_state->get_Longitude(),
299 cur_fdm_state->get_Latitude() );
301 FG_LOG( FG_GENERAL, FG_ALERT, "Error in Tile Manager initialization!" );
305 FG_LOG( FG_GENERAL, FG_DEBUG,
306 "Current terrain elevation after tile mgr init " <<
309 // Calculate ground elevation at starting point (we didn't have
310 // tmp_abs_view_pos calculated when fgTileMgrUpdate() was called above
312 // calculalate a cartesian point somewhere along the line between
313 // the center of the earth and our view position. Doesn't have to
314 // be the exact elevation (this is good because we don't know it
317 // now handled inside of the fgTileMgrUpdate()
320 geod_pos = Point3D( cur_fdm_state->get_Longitude(), cur_fdm_state->get_Latitude(), 0.0);
321 tmp_abs_view_pos = fgGeodToCart(geod_pos);
323 FG_LOG( FG_GENERAL, FG_DEBUG,
324 "Initial abs_view_pos = " << tmp_abs_view_pos );
326 fgTileMgrCurElev( cur_fdm_state->get_Longitude(), cur_fdm_state->get_Latitude(),
328 FG_LOG( FG_GENERAL, FG_DEBUG,
329 "Altitude after update " << scenery.cur_elev );
332 fgFDMSetGroundElevation( current_options.get_flight_model(),
335 // Reset our altitude if we are below ground
336 FG_LOG( FG_GENERAL, FG_DEBUG, "Current altitude = " << cur_fdm_state->get_Altitude() );
337 FG_LOG( FG_GENERAL, FG_DEBUG, "Current runway altitude = " <<
338 cur_fdm_state->get_Runway_altitude() );
340 if ( cur_fdm_state->get_Altitude() < cur_fdm_state->get_Runway_altitude() + 3.758099) {
341 cur_fdm_state->set_Altitude( cur_fdm_state->get_Runway_altitude() + 3.758099 );
344 FG_LOG( FG_GENERAL, FG_INFO,
345 "Updated position (after elevation adj): ("
346 << (cur_fdm_state->get_Latitude() * RAD_TO_DEG) << ", "
347 << (cur_fdm_state->get_Longitude() * RAD_TO_DEG) << ", "
348 << (cur_fdm_state->get_Altitude() * FEET_TO_METER) << ")" );
350 // We need to calculate a few more values here that would normally
351 // be calculated by the FDM so that the current_view.UpdateViewMath()
352 // routine doesn't get hosed.
354 double sea_level_radius_meters;
356 // Set the FG variables first
357 fgGeodToGeoc( cur_fdm_state->get_Latitude(), cur_fdm_state->get_Altitude(),
358 &sea_level_radius_meters, &lat_geoc);
359 cur_fdm_state->set_Geocentric_Position( lat_geoc, cur_fdm_state->get_Longitude(),
360 cur_fdm_state->get_Altitude() +
361 (sea_level_radius_meters * METER_TO_FEET) );
362 cur_fdm_state->set_Sea_level_radius( sea_level_radius_meters * METER_TO_FEET );
364 cur_fdm_state->set_sin_cos_longitude(cur_fdm_state->get_Longitude());
365 cur_fdm_state->set_sin_cos_latitude(cur_fdm_state->get_Latitude());
367 cur_fdm_state->set_sin_lat_geocentric(sin(lat_geoc));
368 cur_fdm_state->set_cos_lat_geocentric(cos(lat_geoc));
370 // The following section sets up the flight model EOM parameters
371 // and should really be read in from one or more files.
374 cur_fdm_state->set_Velocities_Local( current_options.get_uBody(),
375 current_options.get_vBody(),
376 current_options.get_wBody());
378 // Initial Orientation
379 cur_fdm_state->set_Euler_Angles( current_options.get_roll() * DEG_TO_RAD,
380 current_options.get_pitch() * DEG_TO_RAD,
381 current_options.get_heading() * DEG_TO_RAD );
383 // Initial Angular Body rates
384 cur_fdm_state->set_Omega_Body( 7.206685E-05, 0.0, 9.492658E-05 );
386 cur_fdm_state->set_Earth_position_angle( 0.0 );
388 // Mass properties and geometry values
389 cur_fdm_state->set_Inertias( 8.547270E+01,
390 1.048000E+03, 3.000000E+03, 3.530000E+03, 0.000000E+00 );
392 // CG position w.r.t. ref. point
393 cur_fdm_state->set_CG_Position( 0.0, 0.0, 0.0 );
395 // Initialize the event manager
396 global_events.Init();
398 // Output event stats every 60 seconds
399 global_events.Register( "fgEVENT_MGR::PrintStats()",
400 fgMethodCallback<fgEVENT_MGR>( &global_events,
401 &fgEVENT_MGR::PrintStats),
402 fgEVENT::FG_EVENT_READY, 60000 );
404 // Initialize view parameters
405 FG_LOG( FG_GENERAL, FG_DEBUG, "Before current_view.init()");
408 FG_LOG( FG_GENERAL, FG_DEBUG, "After current_view.init()");
409 current_view.UpdateViewMath(*cur_fdm_state);
410 pilot_view.UpdateViewMath(*cur_fdm_state);
411 FG_LOG( FG_GENERAL, FG_DEBUG, " abs_view_pos = " << current_view.get_abs_view_pos());
412 // current_view.UpdateWorldToEye(f);
414 // Initialize the planetary subsystem
415 // global_events.Register( "fgPlanetsInit()", fgPlanetsInit,
416 // fgEVENT::FG_EVENT_READY, 600000);
418 // Initialize the sun's position
419 // global_events.Register( "fgSunInit()", fgSunInit,
420 // fgEVENT::FG_EVENT_READY, 30000 );
422 // Intialize the moon's position
423 // global_events.Register( "fgMoonInit()", fgMoonInit,
424 // fgEVENT::FG_EVENT_READY, 600000 );
426 // fgUpdateSunPos() needs a few position and view parameters set
427 // so it can calculate local relative sun angle and a few other
428 // things for correctly orienting the sky.
431 global_events.Register( "fgUpdateSunPos()", fgUpdateSunPos,
432 fgEVENT::FG_EVENT_READY, 60000);
433 global_events.Register( "fgUpdateMoonPos()", fgUpdateMoonPos,
434 fgEVENT::FG_EVENT_READY, 60000);
436 // Initialize Lighting interpolation tables
439 // update the lighting parameters (based on sun angle)
440 global_events.Register( "fgLight::Update()",
441 fgMethodCallback<fgLIGHT>( &cur_light_params,
443 fgEVENT::FG_EVENT_READY, 30000 );
444 // update the current timezone each 30 minutes
445 global_events.Register( "fgUpdateLocalTime()", fgUpdateLocalTime,
446 fgEVENT::FG_EVENT_READY, 1800000);
448 // Initialize the weather modeling subsystem
449 #ifndef FG_OLD_WEATHER
450 // Initialize the WeatherDatabase
451 FG_LOG(FG_GENERAL, FG_INFO, "Creating LocalWeatherDatabase");
453 sgSetVec3( position, current_aircraft.fdm_state->get_Latitude(),
454 current_aircraft.fdm_state->get_Longitude(),
455 current_aircraft.fdm_state->get_Altitude() * FEET_TO_METER );
456 FGLocalWeatherDatabase::theFGLocalWeatherDatabase =
457 new FGLocalWeatherDatabase( position, current_options.get_fg_root() );
458 // cout << theFGLocalWeatherDatabase << endl;
459 // cout << "visibility = "
460 // << theFGLocalWeatherDatabase->getWeatherVisibility() << endl;
462 WeatherDatabase = FGLocalWeatherDatabase::theFGLocalWeatherDatabase;
464 // register the periodic update of the weather
465 global_events.Register( "weather update", fgUpdateWeatherDatabase,
466 fgEVENT::FG_EVENT_READY, 30000);
468 current_weather.Init();
471 // Initialize vor/ndb/ils/fix list management and query systems
472 FG_LOG(FG_GENERAL, FG_INFO, "Loading Navaids");
474 FG_LOG(FG_GENERAL, FG_INFO, " VOR/NDB");
475 current_navlist = new FGNavList;
476 FGPath p_nav( current_options.get_fg_root() );
477 p_nav.append( "Navaids/default.nav" );
478 current_navlist->init( p_nav );
480 FG_LOG(FG_GENERAL, FG_INFO, " ILS");
481 current_ilslist = new FGILSList;
482 FGPath p_ils( current_options.get_fg_root() );
483 p_ils.append( "Navaids/default.ils" );
484 current_ilslist->init( p_ils );
486 FG_LOG(FG_GENERAL, FG_INFO, " Fixes");
487 current_fixlist = new FGFixList;
488 FGPath p_fix( current_options.get_fg_root() );
489 p_fix.append( "Navaids/default.fix" );
490 current_fixlist->init( p_fix );
492 // Initialize the underlying radio stack model
493 current_radiostack = new FGRadioStack;
495 current_radiostack->set_nav1_freq( 117.30 );
496 current_radiostack->set_nav1_alt_freq( 110.30 );
497 current_radiostack->set_nav1_sel_radial( 119.0 );
499 current_radiostack->set_nav2_freq( 111.80 );
500 current_radiostack->set_nav2_alt_freq( 115.70 );
501 current_radiostack->set_nav2_sel_radial( 029.0 );
503 current_radiostack->set_adf_freq( 266.0 );
506 // This block of settings are Alex's defaults for San Diego
507 current_radiostack->set_nav1_freq( 111.70 );
508 current_radiostack->set_nav1_alt_freq( 115.30 );
509 current_radiostack->set_nav1_sel_radial( 280.0 );
510 current_radiostack->set_nav2_freq( 117.80 );
511 current_radiostack->set_nav2_alt_freq( 114.00 );
512 current_radiostack->set_nav2_sel_radial( 68.0 );
513 current_radiostack->set_adf_freq( 210.0 );
514 // End of Alex's custom settings
517 current_radiostack->search( cur_fdm_state->get_Longitude(),
518 cur_fdm_state->get_Latitude(),
519 cur_fdm_state->get_Altitude() * FEET_TO_METER );
521 current_radiostack->update( cur_fdm_state->get_Longitude(),
522 cur_fdm_state->get_Latitude(),
523 cur_fdm_state->get_Altitude() * FEET_TO_METER );
525 // Search radio database once per second
526 global_events.Register( "fgRadioSearch()", fgRadioSearch,
527 fgEVENT::FG_EVENT_READY, 1000);
530 // Initialize the Cockpit subsystem
531 if( fgCockpitInit( ¤t_aircraft )) {
532 // Cockpit initialized ok.
534 FG_LOG( FG_GENERAL, FG_ALERT, "Error in Cockpit initialization!" );
538 // Initialize the flight model subsystem data structures base on
541 // fgFDMInit( current_options.get_flight_model(), cur_fdm_state,
542 // 1.0 / current_options.get_model_hz() );
543 cur_fdm_state->init( 1.0 / current_options.get_model_hz() );
545 // I'm just sticking this here for now, it should probably move
547 scenery.cur_elev = cur_fdm_state->get_Runway_altitude() * FEET_TO_METER;
549 if ( cur_fdm_state->get_Altitude() < cur_fdm_state->get_Runway_altitude() + 3.758099) {
550 cur_fdm_state->set_Altitude( cur_fdm_state->get_Runway_altitude() + 3.758099 );
553 FG_LOG( FG_GENERAL, FG_INFO,
554 "Updated position (after elevation adj): ("
555 << (cur_fdm_state->get_Latitude() * RAD_TO_DEG) << ", "
556 << (cur_fdm_state->get_Longitude() * RAD_TO_DEG) << ", "
557 << (cur_fdm_state->get_Altitude() * FEET_TO_METER) << ")" );
558 // end of thing that I just stuck in that I should probably move
561 if ( fgJoystickInit() ) {
562 // Joystick initialized ok.
564 FG_LOG( FG_GENERAL, FG_ALERT, "Error in Joystick initialization!" );
568 current_autopilot = new FGAutopilot;
569 current_autopilot->init();
571 // initialize the gui parts of the autopilot
577 // Initialize I/O channels
578 #if ! defined( MACOS )
582 // Initialize the 2D panel.
583 current_panel = fgCreateSmallSinglePropPanel(0, 0, 1024, 768);
585 // Initialize the BFI
588 FG_LOG( FG_GENERAL, FG_INFO, endl);
594 void fgReInitSubsystems( void )
596 int toggle_pause = current_options.get_pause();
599 current_options.toggle_pause();
602 if( global_tile_mgr.init() ) {
603 // Load the local scenery data
604 global_tile_mgr.update( cur_fdm_state->get_Longitude(),
605 cur_fdm_state->get_Latitude() );
607 FG_LOG( FG_GENERAL, FG_ALERT, "Error in Tile Manager initialization!" );
610 fgFDMSetGroundElevation( current_options.get_flight_model(),
613 // Reset our altitude if we are below ground
614 FG_LOG( FG_GENERAL, FG_DEBUG, "Current altitude = " << cur_fdm_state->get_Altitude() );
615 FG_LOG( FG_GENERAL, FG_DEBUG, "Current runway altitude = " <<
616 cur_fdm_state->get_Runway_altitude() );
618 if ( cur_fdm_state->get_Altitude() < cur_fdm_state->get_Runway_altitude() + 3.758099) {
619 cur_fdm_state->set_Altitude( cur_fdm_state->get_Runway_altitude() + 3.758099 );
621 double sea_level_radius_meters;
623 // Set the FG variables first
624 fgGeodToGeoc( cur_fdm_state->get_Latitude(), cur_fdm_state->get_Altitude(),
625 &sea_level_radius_meters, &lat_geoc);
626 cur_fdm_state->set_Geocentric_Position( lat_geoc, cur_fdm_state->get_Longitude(),
627 cur_fdm_state->get_Altitude() +
628 (sea_level_radius_meters * METER_TO_FEET) );
629 cur_fdm_state->set_Sea_level_radius( sea_level_radius_meters * METER_TO_FEET );
631 cur_fdm_state->set_sin_cos_longitude(cur_fdm_state->get_Longitude());
632 cur_fdm_state->set_sin_cos_latitude(cur_fdm_state->get_Latitude());
634 cur_fdm_state->set_sin_lat_geocentric(sin(lat_geoc));
635 cur_fdm_state->set_cos_lat_geocentric(cos(lat_geoc));
637 // The following section sets up the flight model EOM parameters
638 // and should really be read in from one or more files.
641 cur_fdm_state->set_Velocities_Local( current_options.get_uBody(),
642 current_options.get_vBody(),
643 current_options.get_wBody());
645 // Initial Orientation
646 cur_fdm_state->set_Euler_Angles( current_options.get_roll() * DEG_TO_RAD,
647 current_options.get_pitch() * DEG_TO_RAD,
648 current_options.get_heading() * DEG_TO_RAD );
650 // Initial Angular Body rates
651 cur_fdm_state->set_Omega_Body( 7.206685E-05, 0.0, 9.492658E-05 );
653 cur_fdm_state->set_Earth_position_angle( 0.0 );
655 // Mass properties and geometry values
656 cur_fdm_state->set_Inertias( 8.547270E+01,
657 1.048000E+03, 3.000000E+03, 3.530000E+03, 0.000000E+00 );
659 // CG position w.r.t. ref. point
660 cur_fdm_state->set_CG_Position( 0.0, 0.0, 0.0 );
662 // Initialize view parameters
663 current_view.set_view_offset( 0.0 );
664 current_view.set_goal_view_offset( 0.0 );
665 pilot_view.set_view_offset( 0.0 );
666 pilot_view.set_goal_view_offset( 0.0 );
668 FG_LOG( FG_GENERAL, FG_DEBUG, "After current_view.init()");
669 current_view.UpdateViewMath(*cur_fdm_state);
670 pilot_view.UpdateViewMath(*cur_fdm_state);
671 FG_LOG( FG_GENERAL, FG_DEBUG, " abs_view_pos = " << current_view.get_abs_view_pos());
673 // fgFDMInit( current_options.get_flight_model(), cur_fdm_state,
674 // 1.0 / current_options.get_model_hz() );
675 cur_fdm_state->init( 1.0 / current_options.get_model_hz() );
677 scenery.cur_elev = cur_fdm_state->get_Runway_altitude() * FEET_TO_METER;
679 if ( cur_fdm_state->get_Altitude() < cur_fdm_state->get_Runway_altitude() + 3.758099) {
680 cur_fdm_state->set_Altitude( cur_fdm_state->get_Runway_altitude() + 3.758099 );
683 controls.reset_all();
684 current_autopilot->reset();
687 current_options.toggle_pause();