1 // main.cxx -- top level sim routines
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 #include <simgear/compiler.h>
30 #if defined(__linux__) && defined(__i386__)
31 # include <fpu_control.h>
37 #include <plib/netSocket.h>
40 #include <osg/GraphicsContext>
41 #include <osgDB/Registry>
44 #include <simgear/ephemeris/ephemeris.hxx>
45 #include <simgear/scene/model/modellib.hxx>
46 #include <simgear/scene/material/matlib.hxx>
47 #include <simgear/scene/model/animation.hxx>
48 #include <simgear/scene/sky/sky.hxx>
49 #include <simgear/structure/event_mgr.hxx>
50 #include <simgear/props/props.hxx>
51 #include <simgear/timing/sg_time.hxx>
52 #include <simgear/math/sg_random.h>
54 #include <Time/light.hxx>
55 #include <Include/general.hxx>
56 #include <Aircraft/replay.hxx>
57 #include <Cockpit/cockpit.hxx>
58 #include <Cockpit/hud.hxx>
59 #include <Model/panelnode.hxx>
60 #include <Model/modelmgr.hxx>
61 #include <Model/acmodel.hxx>
62 #include <Scenery/scenery.hxx>
63 #include <Scenery/tilemgr.hxx>
64 #include <Sound/beacon.hxx>
65 #include <Sound/morse.hxx>
66 #include <Sound/fg_fx.hxx>
67 #include <FDM/flight.hxx>
68 #include <ATCDCL/ATCmgr.hxx>
69 #include <ATCDCL/AIMgr.hxx>
70 #include <Time/tmp.hxx>
71 #include <Environment/environment_mgr.hxx>
72 #include <GUI/new_gui.hxx>
73 #include <MultiPlayer/multiplaymgr.hxx>
75 #include "CameraGroup.hxx"
76 #include "fg_commands.hxx"
78 #include "renderer.hxx"
82 #include "fg_init.hxx"
84 #include "WindowSystemAdapter.hxx"
85 #include <Main/viewer.hxx>
87 static double real_delta_time_sec = 0.0;
88 double delta_time_sec = 0.0;
89 extern float init_volume;
91 using namespace flightgear;
95 // This is a record containing a bit of global housekeeping information
98 // Specify our current idle function state. This is used to run all
99 // our initializations out of the idle callback so that we can get a
100 // splash screen up and running right away.
102 long global_multi_loop;
104 SGTimeStamp last_time_stamp;
105 SGTimeStamp current_time_stamp;
107 // The atexit() function handler should know when the graphical subsystem
109 extern int _bootstrap_OSInit;
113 // Update internal time dependent calculations (i.e. flight model)
114 // FIXME: this distinction is obsolete; all subsystems now get delta
116 void fgUpdateTimeDepCalcs() {
117 static bool inited = false;
119 static const SGPropertyNode *replay_state
120 = fgGetNode( "/sim/freeze/replay-state", true );
121 static SGPropertyNode *replay_time
122 = fgGetNode( "/sim/replay/time", true );
123 // static const SGPropertyNode *replay_end_time
124 // = fgGetNode( "/sim/replay/end-time", true );
126 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
128 // Initialize the FDM here if it hasn't been and if we have a
129 // scenery elevation hit.
131 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
132 // << " cur_elev = " << scenery.get_cur_elev() << endl;
134 if (!cur_fdm_state->get_inited()) {
135 // Check for scenery around the aircraft.
136 double lon = fgGetDouble("/sim/presets/longitude-deg");
137 double lat = fgGetDouble("/sim/presets/latitude-deg");
138 // We require just to have 50 meter scenery availabe around
140 double range = 1000.0;
141 SGGeod geod = SGGeod::fromDeg(lon, lat);
142 if (globals->get_scenery()->scenery_available(geod, range)) {
143 //SG_LOG(SG_FLIGHT, SG_INFO, "Finally initializing fdm");
144 cur_fdm_state->init();
145 if ( cur_fdm_state->get_bound() ) {
146 cur_fdm_state->unbind();
148 cur_fdm_state->bind();
152 // conceptually, the following block could be done for each fdm
154 if ( cur_fdm_state->get_inited() ) {
155 // we have been inited, and we are good to go ...
157 if ( replay_state->getIntValue() == 0 ) {
158 // replay off, run fdm
159 cur_fdm_state->update( delta_time_sec );
161 FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
162 r->replay( replay_time->getDoubleValue() );
163 if ( replay_state->getIntValue() == 1 ) {
165 replay_time->setDoubleValue( replay_time->getDoubleValue()
167 * fgGetInt("/sim/speed-up") ) );
168 } else if ( replay_state->getIntValue() == 2 ) {
169 // paused playback (don't advance replay time)
175 fgSetBool("/sim/signals/fdm-initialized", true);
179 // do nothing, fdm isn't inited yet
182 globals->get_aircraft_model()->update(delta_time_sec);
184 // Update solar system
185 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
186 globals->get_time_params()->getLst(),
187 cur_fdm_state->get_Latitude() );
192 // What should we do when we have nothing else to do? Let's get ready
193 // for the next move and update the display?
194 static void fgMainLoop( void ) {
195 int model_hz = fgGetInt("/sim/model-hz");
197 static SGConstPropertyNode_ptr longitude
198 = fgGetNode("/position/longitude-deg");
199 static SGConstPropertyNode_ptr latitude
200 = fgGetNode("/position/latitude-deg");
201 static SGConstPropertyNode_ptr altitude
202 = fgGetNode("/position/altitude-ft");
203 static SGConstPropertyNode_ptr vn_fps
204 = fgGetNode("/velocities/speed-north-fps");
205 static SGConstPropertyNode_ptr ve_fps
206 = fgGetNode("/velocities/speed-east-fps");
207 static SGConstPropertyNode_ptr vd_fps
208 = fgGetNode("/velocities/speed-down-fps");
209 static SGConstPropertyNode_ptr clock_freeze
210 = fgGetNode("/sim/freeze/clock", true);
211 static SGConstPropertyNode_ptr cur_time_override
212 = fgGetNode("/sim/time/cur-time-override", true);
213 static SGConstPropertyNode_ptr max_simtime_per_frame
214 = fgGetNode("/sim/max-simtime-per-frame", true);
215 static SGPropertyNode_ptr frame_signal
216 = fgGetNode("/sim/signals/frame", true);
218 frame_signal->fireValueChanged();
219 SGCloudLayer::enable_bump_mapping = fgGetBool("/sim/rendering/bump-mapping");
221 bool scenery_loaded = fgGetBool("sim/sceneryloaded");
222 bool wait_for_scenery = !(scenery_loaded || fgGetBool("sim/sceneryloaded-override"));
224 // Update the elapsed time.
225 static bool first_time = true;
227 last_time_stamp.stamp();
231 double throttle_hz = fgGetDouble("/sim/frame-rate-throttle-hz", 0.0);
232 if ( throttle_hz > 0.0 && !wait_for_scenery ) {
233 // optionally throttle the frame rate (to get consistent frame
234 // rates or reduce cpu usage.
236 double frame_us = 1000000.0 / throttle_hz;
238 #define FG_SLEEP_BASED_TIMING 1
239 #if defined(FG_SLEEP_BASED_TIMING)
240 // sleep based timing loop.
242 // Calling sleep, even usleep() on linux is less accurate than
243 // we like, but it does free up the cpu for other tasks during
244 // the sleep so it is desirable. Because of the way sleep()
245 // is implemented in consumer operating systems like windows
246 // and linux, you almost always sleep a little longer than the
249 // To combat the problem of sleeping too long, we calculate the
250 // desired wait time and shorten it by 2000us (2ms) to avoid
251 // [hopefully] over-sleep'ing. The 2ms value was arrived at
252 // via experimentation. We follow this up at the end with a
253 // simple busy-wait loop to get the final pause timing exactly
256 // Assuming we don't oversleep by more than 2000us, this
257 // should be a reasonable compromise between sleep based
258 // waiting, and busy waiting.
260 // sleep() will always overshoot by a bit so undersleep by
261 // 2000us in the hopes of never oversleeping.
263 if ( frame_us < 0.0 ) {
266 current_time_stamp.stamp();
268 double elapsed_us = (current_time_stamp - last_time_stamp).toUSecs();
269 if ( elapsed_us < frame_us ) {
270 double requested_us = frame_us - elapsed_us;
271 ulMilliSecondSleep ( (int)(requested_us / 1000.0) ) ;
275 // busy wait timing loop.
277 // This yields the most accurate timing. If the previous
278 // ulMilliSecondSleep() call is omitted this will peg the cpu
279 // (which is just fine if FG is the only app you care about.)
280 current_time_stamp.stamp();
281 SGTimeStamp next_time_stamp = last_time_stamp;
282 next_time_stamp += SGTimeStamp::fromSec(1e-6*frame_us);
283 while ( current_time_stamp < next_time_stamp ) {
284 current_time_stamp.stamp();
287 // run as fast as the app will go
288 current_time_stamp.stamp();
291 real_delta_time_sec = (current_time_stamp - last_time_stamp).toSecs();
293 // Limit the time we need to spend in simulation loops
294 // That means, if the /sim/max-simtime-per-frame value is strictly positive
295 // you can limit the maximum amount of time you will do simulations for
296 // one frame to display. The cpu time spent in simulations code is roughly
297 // at least O(real_delta_time_sec). If this is (due to running debug
298 // builds or valgrind or something different blowing up execution times)
299 // larger than the real time you will no longer get any response
300 // from flightgear. This limits that effect. Just set to property from
301 // your .fgfsrc or commandline ...
302 double dtMax = max_simtime_per_frame->getDoubleValue();
303 if (0 < dtMax && dtMax < real_delta_time_sec)
304 real_delta_time_sec = dtMax;
306 // round the real time down to a multiple of 1/model-hz.
307 // this way all systems are updated the _same_ amount of dt.
308 static double reminder = 0.0;
309 real_delta_time_sec += reminder;
310 global_multi_loop = long(floor(real_delta_time_sec*model_hz));
311 global_multi_loop = SGMisc<long>::max(0, global_multi_loop);
312 reminder = real_delta_time_sec - double(global_multi_loop)/double(model_hz);
313 real_delta_time_sec = double(global_multi_loop)/double(model_hz);
315 if (clock_freeze->getBoolValue() || wait_for_scenery) {
318 delta_time_sec = real_delta_time_sec;
320 last_time_stamp = current_time_stamp;
321 globals->inc_sim_time_sec( delta_time_sec );
323 // These are useful, especially for Nasal scripts.
324 fgSetDouble("/sim/time/delta-realtime-sec", real_delta_time_sec);
325 fgSetDouble("/sim/time/delta-sec", delta_time_sec);
327 #ifdef FANCY_FRAME_COUNTER
331 static time_t last_time = 0;
332 static int frames = 0;
333 #endif // FANCY_FRAME_COUNTER
335 SGTime *t = globals->get_time_params();
337 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
338 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
340 // Fix elevation. I'm just sticking this here for now, it should
341 // probably move eventually
343 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
344 scenery.get_cur_elev(),
345 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
346 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
348 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
349 scenery.get_cur_elev(),
350 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
351 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
353 // cout << "Warp = " << globals->get_warp() << endl;
356 static bool last_clock_freeze = false;
358 if ( clock_freeze->getBoolValue() ) {
359 // clock freeze requested
360 if ( cur_time_override->getLongValue() == 0 ) {
361 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
362 globals->set_warp( 0 );
365 // no clock freeze requested
366 if ( last_clock_freeze == true ) {
367 // clock just unfroze, let's set warp as the difference
368 // between frozen time and current time so we don't get a
369 // time jump (and corresponding sky object and lighting
371 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
372 fgSetLong( "/sim/time/cur-time-override", 0 );
374 if ( globals->get_warp_delta() != 0 ) {
375 globals->inc_warp( globals->get_warp_delta() );
379 last_clock_freeze = clock_freeze->getBoolValue();
381 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
382 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
383 cur_time_override->getLongValue(),
384 globals->get_warp() );
386 if (globals->get_warp_delta() != 0) {
387 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
391 // update magvar model
392 globals->get_mag()->update( longitude->getDoubleValue()
393 * SGD_DEGREES_TO_RADIANS,
394 latitude->getDoubleValue()
395 * SGD_DEGREES_TO_RADIANS,
396 altitude->getDoubleValue() * SG_FEET_TO_METER,
397 globals->get_time_params()->getJD() );
399 // Calculate frame rate average
400 #ifdef FANCY_FRAME_COUNTER
401 /* old fps calculation */
405 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
406 tmp = general.get_frame(i);
408 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
409 general.set_frame(i+1,tmp);
411 tmp = 1000000.0 / (float)elapsed;
412 general.set_frame(0,tmp);
413 // printf("frame[0] = %.2f\n", general.frames[0]);
415 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
416 // printf("ave = %.2f\n", general.frame_rate);
419 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
420 general.set_frame_rate( frames );
421 fgSetInt("/sim/frame-rate", frames);
422 SG_LOG( SG_ALL, SG_DEBUG,
423 "--> Frame rate is = " << general.get_frame_rate() );
426 last_time = t->get_cur_time();
430 // Update any multiplayer's network queues, the AIMultiplayer
431 // implementation is an AI model and depends on that
432 globals->get_multiplayer_mgr()->Update();
435 if (fgGetBool("/sim/atc/enabled"))
436 globals->get_ATC_mgr()->update(delta_time_sec);
438 // Run the AI subsystem
439 // FIXME: run that also if we have multiplaying enabled since the
440 // multiplayer information is interpreted by an AI model
441 if (fgGetBool("/sim/ai-traffic/enabled"))
442 globals->get_AI_mgr()->update(delta_time_sec);
445 if (0 < global_multi_loop) {
446 // first run the flight model each frame until it is initialized
447 // then continue running each frame only after initial scenery
449 fgUpdateTimeDepCalcs();
451 SG_LOG( SG_ALL, SG_DEBUG,
452 "Elapsed time is zero ... we're zinging" );
455 globals->get_subsystem_mgr()->update(delta_time_sec);
458 // Tile Manager updates - see if we need to load any new scenery tiles.
459 // this code ties together the fdm, viewer and scenery classes...
460 // we may want to move this to its own class at some point
462 double visibility_meters = fgGetDouble("/environment/visibility-m");
464 globals->get_tile_mgr()->prep_ssg_nodes( visibility_meters );
465 // update tile manager for view...
466 SGVec3d viewPos = globals->get_current_view()->get_view_pos();
467 SGGeod geodViewPos = SGGeod::fromCart(viewPos);
468 globals->get_tile_mgr()->update(geodViewPos, visibility_meters);
470 // run Nasal's settimer() loops right before the view manager
471 globals->get_event_mgr()->update(delta_time_sec);
473 // pick up model coordidnates that Nasal code may have set relative to the
475 globals->get_model_mgr()->update(delta_time_sec);
477 // update the view angle as late as possible, but before sound calculations
478 globals->get_viewmgr()->update(real_delta_time_sec);
480 // Run audio scheduler
481 #ifdef ENABLE_AUDIO_SUPPORT
482 FGFX* fx = (FGFX*) globals->get_subsystem("fx");
483 fx->update_fx_late(delta_time_sec);
486 // END Tile Manager udpates
488 if (!scenery_loaded && globals->get_tile_mgr()->isSceneryLoaded()
489 && cur_fdm_state->get_inited()) {
490 fgSetBool("sim/sceneryloaded",true);
491 fgSetFloat("/sim/sound/volume", init_volume);
492 globals->get_soundmgr()->set_volume(init_volume);
497 SG_LOG( SG_ALL, SG_DEBUG, "" );
500 // Operation for querying OpenGL parameters. This must be done in a
501 // valid OpenGL context, potentially in another thread.
504 struct GeneralInitOperation : public GraphicsContextOperation
506 GeneralInitOperation()
507 : GraphicsContextOperation(std::string("General init"))
510 void run(osg::GraphicsContext* gc)
512 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
513 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
514 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
515 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
518 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
519 general.set_glMaxTexSize( tmp );
520 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
522 glGetIntegerv( GL_DEPTH_BITS, &tmp );
523 general.set_glDepthBits( tmp );
524 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
529 // This is the top level master main function that is registered as
532 // The first few passes take care of initialization things (a couple
533 // per pass) and once everything has been initialized fgMainLoop from
536 static void fgIdleFunction ( void ) {
537 static osg::ref_ptr<GeneralInitOperation> genOp;
538 if ( idle_state == 0 ) {
540 // Pick some window on which to do queries.
541 // XXX Perhaps all this graphics initialization code should be
542 // moved to renderer.cxx?
543 genOp = new GeneralInitOperation;
544 osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
545 WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
546 osg::GraphicsContext* gc = 0;
548 gc = guiCamera->getGraphicsContext();
550 gc->add(genOp.get());
552 wsa->windows[0]->gc->add(genOp.get());
555 } else if ( idle_state == 1 ) {
557 if (!genOp->isFinished())
561 if (!guiFinishInit())
564 fgSplashProgress("reading aircraft list");
567 } else if ( idle_state == 2 ) {
569 // Read the list of available aircraft
571 fgSplashProgress("reading airport & navigation data");
574 } else if ( idle_state == 3 ) {
577 fgSplashProgress("setting up scenery");
580 } else if ( idle_state == 4 ) {
582 // based on the requested presets, calculate the true starting
585 fgInitTowerLocationListener();
587 SGTime *t = fgInitTime();
588 globals->set_time_params( t );
590 // Do some quick general initializations
591 if( !fgInitGeneral()) {
592 SG_LOG( SG_GENERAL, SG_ALERT,
593 "General initialization failed ..." );
597 ////////////////////////////////////////////////////////////////////
598 // Initialize the property-based built-in commands
599 ////////////////////////////////////////////////////////////////////
603 ////////////////////////////////////////////////////////////////////
604 // Initialize the material manager
605 ////////////////////////////////////////////////////////////////////
606 globals->set_matlib( new SGMaterialLib );
607 simgear::SGModelLib::init(globals->get_fg_root());
610 ////////////////////////////////////////////////////////////////////
611 // Initialize the TG scenery subsystem.
612 ////////////////////////////////////////////////////////////////////
613 globals->set_scenery( new FGScenery );
614 globals->get_scenery()->init();
615 globals->get_scenery()->bind();
616 globals->set_tile_mgr( new FGTileMgr );
619 ////////////////////////////////////////////////////////////////////
620 // Initialize the general model subsystem.
621 ////////////////////////////////////////////////////////////////////
622 globals->set_model_mgr(new FGModelMgr);
623 globals->get_model_mgr()->init();
624 globals->get_model_mgr()->bind();
625 fgSplashProgress("loading aircraft");
628 } else if ( idle_state == 5 ) {
630 ////////////////////////////////////////////////////////////////////
631 // Initialize the 3D aircraft model subsystem (has a dependency on
632 // the scenery subsystem.)
633 ////////////////////////////////////////////////////////////////////
634 globals->set_aircraft_model(new FGAircraftModel);
635 globals->get_aircraft_model()->init();
636 globals->get_aircraft_model()->bind();
638 ////////////////////////////////////////////////////////////////////
639 // Initialize the view manager subsystem.
640 ////////////////////////////////////////////////////////////////////
641 FGViewMgr *viewmgr = new FGViewMgr;
642 globals->set_viewmgr( viewmgr );
645 fgSplashProgress("generating sky elements");
648 } else if ( idle_state == 6 ) {
650 // Initialize the sky
651 SGPath ephem_data_path( globals->get_fg_root() );
652 ephem_data_path.append( "Astro" );
653 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
654 ephem->update( globals->get_time_params()->getMjd(),
655 globals->get_time_params()->getLst(),
657 globals->set_ephem( ephem );
659 // TODO: move to environment mgr
661 SGPath texture_path(globals->get_fg_root());
662 texture_path.append("Textures");
663 texture_path.append("Sky");
664 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
665 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
666 thesky->add_cloud_layer(layer);
669 SGPath sky_tex_path( globals->get_fg_root() );
670 sky_tex_path.append( "Textures" );
671 sky_tex_path.append( "Sky" );
672 thesky->texture_path( sky_tex_path.str() );
674 // The sun and moon diameters are scaled down numbers of the
675 // actual diameters. This was needed to fit both the sun and the
676 // moon within the distance to the far clip plane.
677 // Moon diameter: 3,476 kilometers
678 // Sun diameter: 1,390,000 kilometers
679 thesky->build( 80000.0, 80000.0,
681 *globals->get_ephem(),
682 fgGetNode("/environment", true));
684 // Initialize MagVar model
685 SGMagVar *magvar = new SGMagVar();
686 globals->set_mag( magvar );
689 // kludge to initialize mag compass
690 // (should only be done for in-flight
692 // update magvar model
693 globals->get_mag()->update( fgGetDouble("/position/longitude-deg")
694 * SGD_DEGREES_TO_RADIANS,
695 fgGetDouble("/position/latitude-deg")
696 * SGD_DEGREES_TO_RADIANS,
697 fgGetDouble("/position/altitude-ft")
699 globals->get_time_params()->getJD() );
700 double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
701 fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
702 fgSetDouble("/instrumentation/heading-indicator-fg/offset-deg", -var);
705 // airport = new ssgBranch;
706 // airport->setName( "Airport Lighting" );
707 // lighting->addKid( airport );
709 // build our custom render states
710 fgSplashProgress("initializing subsystems");
713 } else if ( idle_state == 7 ) {
715 // Initialize audio support
716 #ifdef ENABLE_AUDIO_SUPPORT
718 // Start the intro music
719 if ( fgGetBool("/sim/startup/intro-music") ) {
720 SGPath mp3file( globals->get_fg_root() );
721 mp3file.append( "Sounds/intro.mp3" );
723 SG_LOG( SG_GENERAL, SG_INFO,
724 "Starting intro music: " << mp3file.str() );
726 #if defined( __CYGWIN__ )
727 string command = "start /m `cygpath -w " + mp3file.str() + "`";
728 #elif defined( WIN32 )
729 string command = "start /m " + mp3file.str();
731 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
734 system ( command.c_str() );
737 // This is the top level init routine which calls all the
738 // other subsystem initialization routines. If you are adding
739 // a subsystem to flightgear, its initialization call should be
740 // located in this routine.
741 if( !fgInitSubsystems()) {
742 SG_LOG( SG_GENERAL, SG_ALERT,
743 "Subsystem initialization failed ..." );
746 fgSplashProgress("setting up time & renderer");
749 } else if ( idle_state == 8 ) {
751 // Initialize the time offset (warp) after fgInitSubsystem
752 // (which initializes the lighting interpolation tables.)
755 // setup OpenGL view parameters
756 globals->get_renderer()->init();
758 SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
759 globals->get_renderer()->resize( fgGetInt("/sim/startup/xsize"),
760 fgGetInt("/sim/startup/ysize") );
762 fgSplashProgress("loading scenery objects");
766 if ( idle_state == 1000 ) {
767 // We've finished all our initialization steps, from now on we
768 // run the main loop.
769 fgSetBool("sim/sceneryloaded", false);
770 fgRegisterIdleHandler( fgMainLoop );
775 static void upper_case_property(const char *name)
777 using namespace simgear;
778 SGPropertyNode *p = fgGetNode(name, false);
780 p = fgGetNode(name, true);
781 p->setStringValue("");
783 props::Type t = p->getType();
784 if (t == props::NONE || t == props::UNSPECIFIED)
785 p->setStringValue("");
787 assert(t == props::STRING);
789 p->addChangeListener(new FGMakeUpperCase);
793 // Main top level initialization
794 bool fgMainInit( int argc, char **argv ) {
796 // set default log levels
797 sglog().setLogLevels( SG_ALL, SG_ALERT );
800 #ifdef FLIGHTGEAR_VERSION
801 version = FLIGHTGEAR_VERSION;
803 version = "unknown version";
805 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
807 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
809 // Allocate global data structures. This needs to happen before
810 // we parse command line options
812 globals = new FGGlobals;
814 // seed the random number generator
817 FGControls *controls = new FGControls;
818 globals->set_controls( controls );
820 string_list *col = new string_list;
821 globals->set_channel_options_list( col );
823 fgValidatePath("", false); // initialize static variables
824 upper_case_property("/sim/presets/airport-id");
825 upper_case_property("/sim/presets/runway");
826 upper_case_property("/sim/tower/airport-id");
827 upper_case_property("/autopilot/route-manager/input");
829 // Scan the config file(s) and command line options to see if
830 // fg_root was specified (ignore all other options for now)
831 fgInitFGRoot(argc, argv);
833 // Check for the correct base package version
834 static char required_version[] = "1.9.0";
835 string base_version = fgBasePackageVersion();
836 if ( !(base_version == required_version) ) {
837 // tell the operator how to use this application
839 SG_LOG( SG_GENERAL, SG_ALERT, "" ); // To popup the console on windows
840 cerr << endl << "Base package check failed ... " \
841 << "Found version " << base_version << " at: " \
842 << globals->get_fg_root() << endl;
843 cerr << "Please upgrade to version: " << required_version << endl;
845 cerr << "Hit a key to continue..." << endl;
851 // Load the configuration parameters. (Command line options
852 // override config file options. Config file options override
854 if ( !fgInitConfig(argc, argv) ) {
855 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
859 // Initialize the Window/Graphics environment.
860 fgOSInit(&argc, argv);
863 fgRegisterWindowResizeHandler( &FGRenderer::resize );
864 fgRegisterIdleHandler( &fgIdleFunction );
865 fgRegisterDrawHandler( &FGRenderer::update );
867 #ifdef FG_ENABLE_MULTIPASS_CLOUDS
868 bool get_stencil_buffer = true;
870 bool get_stencil_buffer = false;
873 // Initialize plib net interface
874 netInit( &argc, argv );
876 // Clouds3D requires an alpha channel
877 // clouds may require stencil buffer
878 fgOSOpenWindow(get_stencil_buffer);
880 // Initialize the splash screen right away
884 // pass control off to the master event handler
887 // we never actually get here ... but to avoid compiler warnings,