1 // main.cxx -- top level sim routines
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 - 2002 Curtis L. Olson - curt@flightgear.org
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.
28 #include <simgear/compiler.h>
30 #if defined(__linux__) && defined(__i386__)
31 # include <fpu_control.h>
35 #ifdef SG_MATH_EXCEPTION_CLASH
44 #include <plib/netSocket.h>
46 #include <simgear/props/props.hxx>
47 #include <simgear/timing/sg_time.hxx>
48 #include <simgear/math/sg_random.h>
51 #include <simgear/ephemeris/ephemeris.hxx>
52 #include <simgear/scene/model/modellib.hxx>
53 #include <simgear/scene/material/matlib.hxx>
54 #include <simgear/scene/model/animation.hxx>
55 #include <simgear/scene/sky/sky.hxx>
56 #include <Time/light.hxx>
60 #include <Include/general.hxx>
61 #include <Cockpit/cockpit.hxx>
62 #include <Cockpit/radiostack.hxx>
63 #include <Cockpit/hud.hxx>
64 #include <Model/panelnode.hxx>
65 #include <Model/modelmgr.hxx>
66 #include <Model/acmodel.hxx>
67 #include <Scenery/scenery.hxx>
68 #include <Scenery/tilemgr.hxx>
69 #include <FDM/flight.hxx>
70 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
71 #include <FDM/ADA.hxx>
72 #include <ATC/ATCdisplay.hxx>
73 #include <ATC/ATCmgr.hxx>
74 #include <ATC/AIMgr.hxx>
75 #include <Replay/replay.hxx>
76 #include <Time/tmp.hxx>
77 #include <Time/fg_timer.hxx>
78 #include <Environment/environment_mgr.hxx>
79 #include <GUI/new_gui.hxx>
82 #include <MultiPlayer/multiplaytxmgr.hxx>
83 #include <MultiPlayer/multiplayrxmgr.hxx>
88 #include "fg_commands.hxx"
90 #include "renderer.hxx"
96 static double real_delta_time_sec = 0.0;
97 double delta_time_sec = 0.0;
101 # include <console.h> // -dw- for command line dialog
104 // This is a record containing a bit of global housekeeping information
107 // Specify our current idle function state. This is used to run all
108 // our initializations out of the idle callback so that we can get a
109 // splash screen up and running right away.
111 long global_multi_loop;
113 SGTimeStamp last_time_stamp;
114 SGTimeStamp current_time_stamp;
116 // The atexit() functio handler should know when the graphical subsystem
118 extern int _bootstrap_OSInit;
122 // Update internal time dependent calculations (i.e. flight model)
123 // FIXME: this distinction is obsolete; all subsystems now get delta
125 void fgUpdateTimeDepCalcs() {
126 static bool inited = false;
128 static const SGPropertyNode *replay_master
129 = fgGetNode( "/sim/freeze/replay", true );
130 static SGPropertyNode *replay_time
131 = fgGetNode( "/sim/replay/time", true );
132 // static const SGPropertyNode *replay_end_time
133 // = fgGetNode( "/sim/replay/end-time", true );
135 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
137 // Initialize the FDM here if it hasn't been and if we have a
138 // scenery elevation hit.
140 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
141 // << " cur_elev = " << scenery.get_cur_elev() << endl;
143 if ( !cur_fdm_state->get_inited() &&
144 globals->get_scenery()->get_cur_elev() > -9990 )
146 SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");
147 cur_fdm_state->init();
148 if ( cur_fdm_state->get_bound() ) {
149 cur_fdm_state->unbind();
151 cur_fdm_state->bind();
154 // conceptually, the following block could be done for each fdm
156 if ( cur_fdm_state->get_inited() ) {
157 // we have been inited, and we are good to go ...
163 if ( ! replay_master->getBoolValue() ) {
164 cur_fdm_state->update( delta_time_sec );
166 FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
167 r->replay( replay_time->getDoubleValue() );
168 replay_time->setDoubleValue( replay_time->getDoubleValue()
170 * fgGetInt("/sim/speed-up") ) );
173 // do nothing, fdm isn't inited yet
176 globals->get_model_mgr()->update(delta_time_sec);
177 globals->get_aircraft_model()->update(delta_time_sec);
179 // update the view angle
180 globals->get_viewmgr()->update(delta_time_sec);
182 // Update solar system
183 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
184 globals->get_time_params()->getLst(),
185 cur_fdm_state->get_Latitude() );
187 // Update radio stack model
188 current_radiostack->update(delta_time_sec);
192 void fgInitTimeDepCalcs( void ) {
197 static const double alt_adjust_ft = 3.758099;
198 static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
201 // What should we do when we have nothing else to do? Let's get ready
202 // for the next move and update the display?
203 static void fgMainLoop( void ) {
204 int model_hz = fgGetInt("/sim/model-hz");
206 static const SGPropertyNode *longitude
207 = fgGetNode("/position/longitude-deg");
208 static const SGPropertyNode *latitude
209 = fgGetNode("/position/latitude-deg");
210 static const SGPropertyNode *altitude
211 = fgGetNode("/position/altitude-ft");
212 static const SGPropertyNode *clock_freeze
213 = fgGetNode("/sim/freeze/clock", true);
214 static const SGPropertyNode *cur_time_override
215 = fgGetNode("/sim/time/cur-time-override", true);
216 // static const SGPropertyNode *replay_master
217 // = fgGetNode("/sim/freeze/replay", true);
219 SGCloudLayer::enable_bump_mapping = fgGetBool("/sim/rendering/bump-mapping",true);
221 // Update the elapsed time.
222 static bool first_time = true;
224 last_time_stamp.stamp();
228 double throttle_hz = fgGetDouble("/sim/frame-rate-throttle-hz", 0.0);
229 if ( throttle_hz > 0.0 ) {
230 // simple frame rate throttle
231 double dt = 1000000.0 / throttle_hz;
232 current_time_stamp.stamp();
233 while ( current_time_stamp - last_time_stamp < dt ) {
234 current_time_stamp.stamp();
237 // run as fast as the app will go
238 current_time_stamp.stamp();
242 = double(current_time_stamp - last_time_stamp) / 1000000.0;
243 if ( clock_freeze->getBoolValue() ) {
246 delta_time_sec = real_delta_time_sec;
248 last_time_stamp = current_time_stamp;
249 globals->inc_sim_time_sec( delta_time_sec );
250 SGAnimation::set_sim_time_sec( globals->get_sim_time_sec() );
252 // These are useful, especially for Nasal scripts.
253 fgSetDouble("/sim/time/delta-realtime-sec", real_delta_time_sec);
254 fgSetDouble("/sim/time/delta-sec", delta_time_sec);
256 static long remainder = 0;
258 #ifdef FANCY_FRAME_COUNTER
262 static time_t last_time = 0;
263 static int frames = 0;
264 #endif // FANCY_FRAME_COUNTER
266 SGTime *t = globals->get_time_params();
268 globals->get_event_mgr()->update(delta_time_sec);
270 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
271 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
273 #if defined( ENABLE_PLIB_JOYSTICK )
274 // Read joystick and update control settings
275 // if ( fgGetString("/sim/control-mode") == "joystick" )
281 // Fix elevation. I'm just sticking this here for now, it should
282 // probably move eventually
284 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
285 scenery.get_cur_elev(),
286 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
287 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
289 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
290 scenery.get_cur_elev(),
291 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
292 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
294 // cout << "Warp = " << globals->get_warp() << endl;
297 static bool last_clock_freeze = false;
299 if ( clock_freeze->getBoolValue() ) {
300 // clock freeze requested
301 if ( cur_time_override->getLongValue() == 0 ) {
302 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
303 globals->set_warp( 0 );
306 // no clock freeze requested
307 if ( last_clock_freeze == true ) {
308 // clock just unfroze, let's set warp as the difference
309 // between frozen time and current time so we don't get a
310 // time jump (and corresponding sky object and lighting
312 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
313 fgSetLong( "/sim/time/cur-time-override", 0 );
315 if ( globals->get_warp_delta() != 0 ) {
316 globals->inc_warp( globals->get_warp_delta() );
320 last_clock_freeze = clock_freeze->getBoolValue();
322 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
323 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
324 cur_time_override->getLongValue(),
325 globals->get_warp() );
327 if (globals->get_warp_delta() != 0) {
328 FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
332 // update magvar model
333 globals->get_mag()->update( longitude->getDoubleValue()
334 * SGD_DEGREES_TO_RADIANS,
335 latitude->getDoubleValue()
336 * SGD_DEGREES_TO_RADIANS,
337 altitude->getDoubleValue() * SG_FEET_TO_METER,
338 globals->get_time_params()->getJD() );
340 // Get elapsed time (in usec) for this past frame
341 elapsed = fgGetTimeInterval();
342 SG_LOG( SG_ALL, SG_DEBUG,
343 "Elapsed time interval is = " << elapsed
344 << ", previous remainder is = " << remainder );
346 // Calculate frame rate average
347 #ifdef FANCY_FRAME_COUNTER
348 /* old fps calculation */
352 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
353 tmp = general.get_frame(i);
355 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
356 general.set_frame(i+1,tmp);
358 tmp = 1000000.0 / (float)elapsed;
359 general.set_frame(0,tmp);
360 // printf("frame[0] = %.2f\n", general.frames[0]);
362 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
363 // printf("ave = %.2f\n", general.frame_rate);
366 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
367 general.set_frame_rate( frames );
368 fgSetInt("/sim/frame-rate", frames);
369 SG_LOG( SG_ALL, SG_DEBUG,
370 "--> Frame rate is = " << general.get_frame_rate() );
373 last_time = t->get_cur_time();
378 if (fgGetBool("/sim/ATC/enabled"))
379 globals->get_ATC_mgr()->update(delta_time_sec);
381 // Run the AI subsystem
382 if (fgGetBool("/sim/ai-traffic/enabled"))
383 globals->get_AI_mgr()->update(delta_time_sec);
386 // Update any multiplayer models
387 globals->get_multiplayer_rx_mgr()->Update();
392 // Calculate model iterations needed for next frame
393 elapsed += remainder;
395 global_multi_loop = (long)(((double)elapsed * 0.000001) * model_hz );
396 remainder = elapsed - ( (global_multi_loop*1000000) / model_hz );
397 SG_LOG( SG_ALL, SG_DEBUG,
398 "Model iterations needed = " << global_multi_loop
399 << ", new remainder = " << remainder );
401 // chop max interations to something reasonable if the sim was
402 // delayed for an excesive amount of time
403 if ( global_multi_loop > 2.0 * model_hz ) {
404 global_multi_loop = (int)(2.0 * model_hz );
408 bool scenery_loaded = fgGetBool("sim/sceneryloaded") || fgGetBool("sim/sceneryloaded-override");
411 if ( global_multi_loop > 0) {
412 // first run the flight model each frame until it is intialized
413 // then continue running each frame only after initial scenery load is complete.
414 if (!cur_fdm_state->get_inited() || scenery_loaded) {
415 fgUpdateTimeDepCalcs();
418 SG_LOG( SG_ALL, SG_DEBUG,
419 "Elapsed time is zero ... we're zinging" );
422 // Do any I/O channel work that might need to be done
423 globals->get_io()->update( real_delta_time_sec );
425 // see if we need to load any deferred-load textures
426 globals->get_matlib()->load_next_deferred();
428 // Run audio scheduler
429 #ifdef ENABLE_AUDIO_SUPPORT
430 if ( globals->get_soundmgr()->is_working() ) {
431 globals->get_soundmgr()->update( delta_time_sec );
435 globals->get_subsystem_mgr()->update(delta_time_sec);
438 // Tile Manager updates - see if we need to load any new scenery tiles.
439 // this code ties together the fdm, viewer and scenery classes...
440 // we may want to move this to it's own class at some point
442 double visibility_meters = fgGetDouble("/environment/visibility-m");
443 FGViewer *current_view = globals->get_current_view();
445 // get the location data for the primary FDM (now hardcoded to ac model)...
446 SGLocation *acmodel_loc = NULL;
447 acmodel_loc = (SGLocation *)globals->
448 get_aircraft_model()->get3DModel()->getSGLocation();
450 // update tile manager for FDM...
451 // ...only if location is different than the current-view location
452 // (to avoid duplicating effort)
453 if( !fgGetBool("/sim/current-view/config/from-model") ) {
454 if( acmodel_loc != NULL ) {
455 globals->get_tile_mgr()->prep_ssg_nodes( acmodel_loc,
457 globals->get_tile_mgr()->
458 update( acmodel_loc, visibility_meters,
460 get_absolute_view_pos(globals->
461 get_scenery()->get_center()) );
462 // save results of update in SGLocation for fdm...
463 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
465 set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
466 fgSetDouble("/position/ground-elev-m",
467 globals->get_scenery()->get_cur_elev());
470 set_tile_center( globals->get_scenery()->get_next_center() );
474 globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(),
476 // update tile manager for view...
477 // IMPORTANT!!! the tilemgr update for view location _must_ be
478 // done last after the FDM's until all of Flight Gear code
479 // references the viewer's location for elevation instead of the
480 // "scenery's" current elevation.
481 SGLocation *view_location = globals->get_current_view()->getSGLocation();
482 globals->get_tile_mgr()->update( view_location, visibility_meters,
483 current_view->get_absolute_view_pos() );
484 // save results of update in SGLocation for fdm...
485 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
486 current_view->getSGLocation()->
487 set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
489 current_view->getSGLocation()->
490 set_tile_center( globals->get_scenery()->get_next_center() );
492 #ifdef ENABLE_AUDIO_SUPPORT
493 // Right now we make a simplifying assumption that the primary
494 // aircraft is the source of all sounds and that all sounds are
495 // positioned relative to the current view position.
497 static sgVec3 last_pos_offset;
499 // set positional offset for sources
500 sgVec3 source_pos_offset;
501 sgSubVec3( source_pos_offset,
502 view_location->get_view_pos(), acmodel_loc->get_view_pos() );
503 // cout << "pos all = " << source_pos_offset[0] << " " << source_pos_offset[1] << " " << source_pos_offset[2] << endl;
504 globals->get_soundmgr()->set_source_pos_all( source_pos_offset );
508 sgSubVec3( source_vel, source_pos_offset, last_pos_offset );
509 sgScaleVec3( source_vel, delta_time_sec );
510 sgCopyVec3( last_pos_offset, source_pos_offset );
511 // cout << "vel = " << source_vel[0] << " " << source_vel[1] << " " << source_vel[2] << endl;
512 globals->get_soundmgr()->set_source_vel_all( source_vel );
514 // Right now we make a simplifying assumption that the listener is
515 // always positioned at the origin.
517 sgSetVec3( listener_pos, 0.0, 0.0, 0.0 );
518 // cout << "listener = " << listener_pos[0] << " " << listener_pos[1] << " " << listener_pos[2] << endl;
519 globals->get_soundmgr()->set_listener_pos( listener_pos );
522 // If fdm location is same as viewer's then we didn't do the
523 // update for fdm location above so we need to save the viewer
524 // results in the fdm SGLocation as well...
525 if( fgGetBool("/sim/current-view/config/from-model") ) {
526 if( acmodel_loc != 0 ) {
527 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
528 acmodel_loc->set_cur_elev_m( globals->get_scenery()->
530 fgSetDouble("/position/ground-elev-m",
531 globals->get_scenery()->get_cur_elev());
533 acmodel_loc->set_tile_center( globals->get_scenery()->
538 // END Tile Manager udpates
540 if (!scenery_loaded && globals->get_tile_mgr()->all_queues_empty() && cur_fdm_state->get_inited()) {
541 fgSetBool("sim/sceneryloaded",true);
544 if (fgGetBool("/sim/rendering/specular-highlight")) {
545 glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
546 // glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
548 glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SINGLE_COLOR);
549 // glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE);
554 SG_LOG( SG_ALL, SG_DEBUG, "" );
558 // This is the top level master main function that is registered as
561 // The first few passes take care of initialization things (a couple
562 // per pass) and once everything has been initialized fgMainLoop from
565 static void fgIdleFunction ( void ) {
566 // printf("idle state == %d\n", idle_state);
568 if ( idle_state == 0 ) {
569 fgSetBool("sim/initialised", false);
571 // Initialize the splash screen right away
572 if ( fgGetBool("/sim/startup/splash-screen") ) {
573 fgSplashInit(fgGetString("/sim/startup/splash-texture"));
577 } else if ( idle_state == 1 ) {
578 // Initialize audio support
579 #ifdef ENABLE_AUDIO_SUPPORT
581 // Start the intro music
582 if ( fgGetBool("/sim/startup/intro-music") ) {
583 SGPath mp3file( globals->get_fg_root() );
584 mp3file.append( "Sounds/intro.mp3" );
586 SG_LOG( SG_GENERAL, SG_INFO,
587 "Starting intro music: " << mp3file.str() );
589 #if defined( __CYGWIN__ )
590 string command = "start /m `cygpath -w " + mp3file.str() + "`";
591 #elif defined( WIN32 )
592 string command = "start /m " + mp3file.str();
594 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
597 system ( command.c_str() );
602 } else if ( idle_state == 2 ) {
603 // These are a few miscellaneous things that aren't really
604 // "subsystems" but still need to be initialized.
607 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
608 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
613 } else if ( idle_state == 3 ) {
614 // This is the top level init routine which calls all the
615 // other subsystem initialization routines. If you are adding
616 // a subsystem to flightgear, its initialization call should
617 // located in this routine.
618 if( !fgInitSubsystems()) {
619 SG_LOG( SG_GENERAL, SG_ALERT,
620 "Subsystem initializations failed ..." );
625 } else if ( idle_state == 4 ) {
626 // Initialize the time offset (warp) after fgInitSubsystem
627 // (which initializes the lighting interpolation tables.)
630 // setup OpenGL view parameters
631 globals->get_renderer()->init();
633 // Read the list of available aircrafts
637 } else if ( idle_state == 5 ) {
640 } else if ( idle_state == 6 ) {
645 SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
646 globals->get_renderer()->resize( fgGetInt("/sim/startup/xsize"),
647 fgGetInt("/sim/startup/ysize") );
651 if ( idle_state == 1000 ) {
652 // We've finished all our initialization steps, from now on we
653 // run the main loop.
654 fgSetBool("sim/initialised",true);
655 fgSetBool("sim/sceneryloaded",false);
657 fgRegisterIdleHandler(fgMainLoop);
659 if ( fgGetBool("/sim/startup/splash-screen") ) {
660 fgSplashUpdate(0.0, 1.0);
666 // Main top level initialization
667 bool fgMainInit( int argc, char **argv ) {
669 #if defined( macintosh )
670 freopen ("stdout.txt", "w", stdout );
671 freopen ("stderr.txt", "w", stderr );
672 argc = ccommand( &argv );
675 // set default log levels
676 sglog().setLogLevels( SG_ALL, SG_ALERT );
679 #ifdef FLIGHTGEAR_VERSION
680 version = FLIGHTGEAR_VERSION;
682 version = "unknown version";
684 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
686 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
688 // Allocate global data structures. This needs to happen before
689 // we parse command line options
691 globals = new FGGlobals;
693 // seed the random number generater
696 FGControls *controls = new FGControls;
697 globals->set_controls( controls );
699 string_list *col = new string_list;
700 globals->set_channel_options_list( col );
702 // Scan the config file(s) and command line options to see if
703 // fg_root was specified (ignore all other options for now)
704 fgInitFGRoot(argc, argv);
706 // Check for the correct base package version
707 static char required_version[] = "0.9.6";
708 string base_version = fgBasePackageVersion();
709 if ( !(base_version == required_version) ) {
710 // tell the operator how to use this application
712 SG_LOG( SG_GENERAL, SG_ALERT, "" ); // To popup the console on windows
713 cerr << endl << "Base package check failed ... " \
714 << "Found version " << base_version << " at: " \
715 << globals->get_fg_root() << endl;
716 cerr << "Please upgrade to version: " << required_version << endl;
718 cerr << "Hit a key to continue..." << endl;
724 sgUseDisplayList = fgGetBool( "/sim/rendering/use-display-list", true );
726 // Initialize the Aircraft directory to "" (UIUC)
729 // Load the configuration parameters. (Command line options
730 // overrides config file options. Config file options override
732 if ( !fgInitConfig(argc, argv) ) {
733 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
737 // Initialize the Window/Graphics environment.
738 #if !defined(__APPLE__) || defined(OSX_BUNDLE)
739 // Mac OS X command line ("non-bundle") applications call this
740 // from main(), in bootstrap.cxx. Andy doesn't know why, someone
741 // feel free to add comments...
742 fgOSInit(&argc, argv);
746 fgRegisterWindowResizeHandler( FGRenderer::resize );
747 fgRegisterIdleHandler( fgIdleFunction );
748 fgRegisterDrawHandler( FGRenderer::update );
750 #ifdef FG_ENABLE_MULTIPASS_CLOUDS
751 bool get_stencil_buffer = true;
753 bool get_stencil_buffer = false;
756 // Clouds3D requires an alpha channel
757 // clouds may require stencil buffer
758 fgOSOpenWindow( fgGetInt("/sim/startup/xsize"),
759 fgGetInt("/sim/startup/ysize"),
760 fgGetInt("/sim/rendering/bits-per-pixel"),
761 fgGetBool("/sim/rendering/clouds3d"),
763 fgGetBool("/sim/startup/fullscreen") );
765 // This seems to be the absolute earliest in the init sequence
766 // that these calls will return valid info. Too bad it's after
767 // we've already created and sized out window. :-(
768 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
769 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
770 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
771 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
774 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
775 general.set_glMaxTexSize( tmp );
776 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
778 glGetIntegerv( GL_DEPTH_BITS, &tmp );
779 general.set_glDepthBits( tmp );
780 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
782 // Initialize plib net interface
783 netInit( &argc, argv );
785 // Initialize ssg (from plib). Needs to come before we do any
786 // other ssg stuff, but after opengl has been initialized.
789 // Initialize the user interface (we need to do this before
790 // passing off control to the OS main loop and before
791 // fgInitGeneral to get our fonts !!!
794 // Read the list of available aircrafts
797 #ifdef GL_EXT_texture_lod_bias
798 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
801 // get the address of our OpenGL extensions
802 if ( fgGetBool("/sim/rendering/distance-attenuation") )
804 if (SGIsOpenGLExtensionSupported("GL_EXT_point_parameters") ) {
805 glPointParameterIsSupported = true;
806 glPointParameterfPtr = (glPointParameterfProc)
807 SGLookupFunction("glPointParameterfEXT");
808 glPointParameterfvPtr = (glPointParameterfvProc)
809 SGLookupFunction("glPointParameterfvEXT");
811 } else if ( SGIsOpenGLExtensionSupported("GL_ARB_point_parameters") ) {
812 glPointParameterIsSupported = true;
813 glPointParameterfPtr = (glPointParameterfProc)
814 SGLookupFunction("glPointParameterfARB");
815 glPointParameterfvPtr = (glPointParameterfvProc)
816 SGLookupFunction("glPointParameterfvARB");
818 glPointParameterIsSupported = false;
821 // based on the requested presets, calculate the true starting
826 SGTime *t = fgInitTime();
827 globals->set_time_params( t );
829 // Do some quick general initializations
830 if( !fgInitGeneral()) {
831 SG_LOG( SG_GENERAL, SG_ALERT,
832 "General initializations failed ..." );
836 ////////////////////////////////////////////////////////////////////
837 // Initialize the property-based built-in commands
838 ////////////////////////////////////////////////////////////////////
841 ////////////////////////////////////////////////////////////////////
842 // Initialize the material manager
843 ////////////////////////////////////////////////////////////////////
844 globals->set_matlib( new SGMaterialLib );
846 globals->set_model_lib(new SGModelLib);
848 ////////////////////////////////////////////////////////////////////
849 // Initialize the TG scenery subsystem.
850 ////////////////////////////////////////////////////////////////////
851 globals->set_scenery( new FGScenery );
852 globals->get_scenery()->init();
853 globals->get_scenery()->bind();
854 globals->set_tile_mgr( new FGTileMgr );
856 ////////////////////////////////////////////////////////////////////
857 // Initialize the general model subsystem.
858 ////////////////////////////////////////////////////////////////////
859 globals->set_model_mgr(new FGModelMgr);
860 globals->get_model_mgr()->init();
861 globals->get_model_mgr()->bind();
863 ////////////////////////////////////////////////////////////////////
864 // Initialize the 3D aircraft model subsystem (has a dependency on
865 // the scenery subsystem.)
866 ////////////////////////////////////////////////////////////////////
867 globals->set_aircraft_model(new FGAircraftModel);
868 globals->get_aircraft_model()->init();
869 globals->get_aircraft_model()->bind();
871 ////////////////////////////////////////////////////////////////////
872 // Initialize the view manager subsystem.
873 ////////////////////////////////////////////////////////////////////
874 FGViewMgr *viewmgr = new FGViewMgr;
875 globals->set_viewmgr( viewmgr );
880 // Initialize the sky
881 SGPath ephem_data_path( globals->get_fg_root() );
882 ephem_data_path.append( "Astro" );
883 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
884 ephem->update( globals->get_time_params()->getMjd(),
885 globals->get_time_params()->getLst(),
887 globals->set_ephem( ephem );
889 // TODO: move to environment mgr
891 SGPath texture_path(globals->get_fg_root());
892 texture_path.append("Textures");
893 texture_path.append("Sky");
894 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
895 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
896 thesky->add_cloud_layer(layer);
899 SGPath sky_tex_path( globals->get_fg_root() );
900 sky_tex_path.append( "Textures" );
901 sky_tex_path.append( "Sky" );
902 thesky->texture_path( sky_tex_path.str() );
904 // The sun and moon diameters are scaled down numbers of the
905 // actual diameters. This was needed to fit bot the sun and the
906 // moon within the distance to the far clip plane.
907 // Moon diameter: 3,476 kilometers
908 // Sun diameter: 1,390,000 kilometers
909 thesky->build( 80000.0, 80000.0,
911 globals->get_ephem()->getNumPlanets(),
912 globals->get_ephem()->getPlanets(),
913 globals->get_ephem()->getNumStars(),
914 globals->get_ephem()->getStars() );
916 // Initialize MagVar model
917 SGMagVar *magvar = new SGMagVar();
918 globals->set_mag( magvar );
921 // kludge to initialize mag compass
922 // (should only be done for in-flight
924 // update magvar model
925 globals->get_mag()->update( fgGetDouble("/position/longitude-deg")
926 * SGD_DEGREES_TO_RADIANS,
927 fgGetDouble("/position/latitude-deg")
928 * SGD_DEGREES_TO_RADIANS,
929 fgGetDouble("/position/altitude-ft")
931 globals->get_time_params()->getJD() );
932 double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
933 fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
935 // airport = new ssgBranch;
936 // airport->setName( "Airport Lighting" );
937 // lighting->addKid( airport );
939 // build our custom render states
940 globals->get_renderer()->build_states();
942 // pass control off to the master event handler
945 // we never actually get here ... but to avoid compiler warnings,