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 #if defined(__linux__) && defined(__i386__)
29 # include <fpu_control.h>
33 #include <simgear/compiler.h>
39 #include <simgear/misc/exception.hxx>
40 #include <simgear/ephemeris/ephemeris.hxx>
41 #include <simgear/route/route.hxx>
42 #include <simgear/screen/extensions.hxx>
44 #include <Environment/environment_mgr.hxx>
46 #ifdef SG_MATH_EXCEPTION_CLASH
58 #include <string.h> // for strcmp()
65 #ifdef HAVE_SYS_STAT_H
66 # include <sys/stat.h> // for stat()
70 # include <unistd.h> // for stat()
73 #include <plib/netChat.h>
78 #include <simgear/constants.h> // for VERSION
79 #include <simgear/debug/logstream.hxx>
80 #include <simgear/math/polar3d.hxx>
81 #include <simgear/math/sg_random.h>
82 #include <simgear/misc/sg_path.hxx>
83 #include <simgear/scene/material/matlib.hxx>
84 #include <simgear/scene/model/animation.hxx>
85 #include <simgear/scene/model/location.hxx>
86 #include <simgear/scene/model/model.hxx>
87 #include <simgear/scene/model/modellib.hxx>
88 #ifdef FG_USE_CLOUDS_3D
89 # include <simgear/scene/sky/clouds3d/SkySceneLoader.hpp>
90 # include <simgear/scene/sky/clouds3d/SkyUtil.hpp>
92 #include <simgear/scene/sky/sky.hxx>
93 #include <simgear/timing/sg_time.hxx>
95 #include <Include/general.hxx>
97 #include <Aircraft/aircraft.hxx>
99 #include <ATC/ATCmgr.hxx>
100 #include <ATC/ATCdisplay.hxx>
101 #include <ATC/AIMgr.hxx>
103 #include <Autopilot/newauto.hxx>
105 #include <Cockpit/hud.hxx>
106 #include <Cockpit/cockpit.hxx>
107 #include <Cockpit/radiostack.hxx>
109 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
111 #include <Model/acmodel.hxx>
112 #include <Model/modelmgr.hxx>
113 #include <Model/panelnode.hxx>
114 #ifdef FG_NETWORK_OLK
115 #include <NetworkOLK/network.h>
119 #include <MultiPlayer/multiplaytxmgr.hxx>
120 #include <MultiPlayer/multiplayrxmgr.hxx>
123 #include <Replay/replay.hxx>
124 #include <Scenery/scenery.hxx>
125 #include <Scenery/tilemgr.hxx>
126 #ifdef ENABLE_AUDIO_SUPPORT
127 # include <Sound/fg_fx.hxx>
128 # include <Sound/morse.hxx>
130 #include <Systems/system_mgr.hxx>
131 #include <Instrumentation/instrument_mgr.hxx>
132 #include <Time/FGEventMgr.hxx>
133 #include <Time/fg_timer.hxx>
134 #include <Time/light.hxx>
135 #include <Time/sunpos.hxx>
136 #include <Time/tmp.hxx>
139 #include <simgear/misc/sgstream.hxx>
140 #include <simgear/math/point3d.hxx>
141 #include <FDM/flight.hxx>
142 #include <FDM/ADA.hxx>
143 #include <Scenery/tileentry.hxx>
145 #include "fg_commands.hxx"
147 glPointParameterfProc glPointParameterfPtr = 0;
148 glPointParameterfvProc glPointParameterfvPtr = 0;
149 bool glPointParameterIsSupported = false;
151 float default_attenuation[3] = {1.0, 0.0, 0.0};
152 //Required for using GL_extensions
153 void fgLoadDCS (void);
154 void fgUpdateDCS (void);
155 ssgSelector *ship_sel=NULL;
156 // upto 32 instances of a same object can be loaded.
157 ssgTransform *ship_pos[32];
158 double obj_lat[32],obj_lon[32],obj_alt[32],obj_pitch[32],obj_roll[32];
160 ssgSelector *lightpoints_brightness = new ssgSelector;
161 ssgTransform *lightpoints_transform = new ssgTransform;
162 FGTileEntry *dummy_tile;
165 // Clip plane settings...
166 float scene_nearplane = 0.5f;
167 float scene_farplane = 120000.0f;
169 static double delta_time_sec = 0.0;
170 static double replay_dt_sec = 0.0;
174 # include <WeatherCM/FGLocalWeatherDatabase.h>
179 #include "fg_init.hxx"
181 #include "fg_props.hxx"
182 #include "globals.hxx"
183 #include "splash.hxx"
184 #include "viewmgr.hxx"
185 #include "options.hxx"
186 #include "logger.hxx"
189 # include <console.h> // -dw- for command line dialog
193 FGEventMgr global_events;
195 // This is a record containing a bit of global housekeeping information
198 // Specify our current idle function state. This is used to run all
199 // our initializations out of the glutIdleLoop() so that we can get a
200 // splash screen up and running right away.
201 static int idle_state = 0;
202 static long global_multi_loop;
204 // fog constants. I'm a little nervous about putting actual code out
205 // here but it seems to work (?)
206 static const double m_log01 = -log( 0.01 );
207 static const double sqrt_m_log01 = sqrt( m_log01 );
208 static GLfloat fog_exp_density;
209 static GLfloat fog_exp2_density;
210 static GLfloat rwy_exp2_punch_through;
211 static GLfloat taxi_exp2_punch_through;
212 static GLfloat ground_exp2_punch_through;
214 #ifdef FG_NETWORK_OLK
215 ssgSelector *fgd_sel = NULL;
216 ssgTransform *fgd_pos = NULL;
222 #ifdef FG_USE_CLOUDS_3D
223 SkySceneLoader *sgClouds3d;
224 bool _bcloud_orig = true;
228 sgMat4 copy_of_ssgOpenGLAxisSwapMatrix =
230 { 1.0f, 0.0f, 0.0f, 0.0f },
231 { 0.0f, 0.0f, -1.0f, 0.0f },
232 { 0.0f, 1.0f, 0.0f, 0.0f },
233 { 0.0f, 0.0f, 0.0f, 1.0f }
236 // The following defines flightgear options. Because glutlib will also
237 // want to parse its own options, those options must not be included here
238 // or they will get parsed by the main program option parser. Hence case
239 // is significant for any option added that might be in conflict with
242 // glutlib parses for:
244 // -direct (invalid in Win32)
248 // -indirect (invalid in Win32)
251 // Note that glutlib depends upon strings while this program's
252 // option parser wants only initial characters followed by numbers
257 ssgSimpleState *cloud3d_imposter_state;
258 ssgSimpleState *default_state;
259 ssgSimpleState *hud_and_panel;
260 ssgSimpleState *menus;
262 SGTimeStamp last_time_stamp;
263 SGTimeStamp current_time_stamp;
266 void fgBuildRenderStates( void ) {
267 default_state = new ssgSimpleState;
268 default_state->ref();
269 default_state->disable( GL_TEXTURE_2D );
270 default_state->enable( GL_CULL_FACE );
271 default_state->enable( GL_COLOR_MATERIAL );
272 default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
273 default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
274 default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
275 default_state->disable( GL_BLEND );
276 default_state->disable( GL_ALPHA_TEST );
277 default_state->disable( GL_LIGHTING );
279 cloud3d_imposter_state = new ssgSimpleState;
280 cloud3d_imposter_state->ref();
281 cloud3d_imposter_state->enable( GL_TEXTURE_2D );
282 cloud3d_imposter_state->enable( GL_CULL_FACE );
283 cloud3d_imposter_state->enable( GL_COLOR_MATERIAL );
284 cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
285 cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 );
286 cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 );
287 cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
288 cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
289 cloud3d_imposter_state->enable( GL_BLEND );
290 cloud3d_imposter_state->enable( GL_ALPHA_TEST );
291 cloud3d_imposter_state->disable( GL_LIGHTING );
293 hud_and_panel = new ssgSimpleState;
294 hud_and_panel->ref();
295 hud_and_panel->disable( GL_CULL_FACE );
296 hud_and_panel->disable( GL_TEXTURE_2D );
297 hud_and_panel->disable( GL_LIGHTING );
298 hud_and_panel->enable( GL_BLEND );
300 menus = new ssgSimpleState;
302 menus->disable( GL_CULL_FACE );
303 menus->disable( GL_TEXTURE_2D );
304 menus->enable( GL_BLEND );
308 // fgInitVisuals() -- Initialize various GL/view parameters
309 void fgInitVisuals( void ) {
312 l = &cur_light_params;
314 #ifndef GLUT_WRONG_VERSION
315 // Go full screen if requested ...
316 if ( fgGetBool("/sim/startup/fullscreen") ) {
321 // If enabled, normal vectors specified with glNormal are scaled
322 // to unit length after transformation. Enabling this has
323 // performance implications. See the docs for glNormal.
324 // glEnable( GL_NORMALIZE );
326 glEnable( GL_LIGHTING );
327 glEnable( GL_LIGHT0 );
328 // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec ); // done later with ssg
331 sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
332 ssgGetLight( 0 ) -> setPosition( sunpos );
334 glFogi (GL_FOG_MODE, GL_EXP2);
335 if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
336 (!fgGetBool("/sim/rendering/shading"))) {
337 // if fastest fog requested, or if flat shading force fastest
338 glHint ( GL_FOG_HINT, GL_FASTEST );
339 } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
340 glHint ( GL_FOG_HINT, GL_NICEST );
342 if ( fgGetBool("/sim/rendering/wireframe") ) {
344 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
347 // This is the default anyways, but it can't hurt
348 glFrontFace ( GL_CCW );
351 // glEnable(GL_POINT_SMOOTH);
352 // glEnable(GL_LINE_SMOOTH);
353 // glEnable(GL_POLYGON_SMOOTH);
357 // For HiRes screen Dumps using Brian Pauls TR Library
358 void trRenderFrame( void ) {
360 if ( fgPanelVisible() ) {
361 GLfloat height = fgGetInt("/sim/startup/ysize");
363 (globals->get_current_panel()->getViewHeight() - globals->get_current_panel()->getYOffset())
364 * (height / 768.0) + 1;
365 glTranslatef( 0.0, view_h, 0.0 );
368 static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
369 static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
371 fgLIGHT *l = &cur_light_params;
373 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
374 l->adj_fog_color[2], l->adj_fog_color[3]);
376 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
378 // set the opengl state to known default values
379 default_state->force();
382 glFogf ( GL_FOG_DENSITY, fog_exp2_density);
383 glFogi ( GL_FOG_MODE, GL_EXP2 );
384 glFogfv ( GL_FOG_COLOR, l->adj_fog_color );
386 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
387 // we only update GL_AMBIENT for our lights we will never get
388 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
389 // explicitely to black.
390 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
391 glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE );
393 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
395 // texture parameters
396 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
397 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
399 // we need a white diffuse light for the phase of the moon
400 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
403 // draw the ssg scene
404 // return to the desired diffuse color
405 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
406 glEnable( GL_DEPTH_TEST );
407 ssgSetNearFar( scene_nearplane, scene_farplane );
408 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
411 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
412 ssgSetNearFar( scene_nearplane, scene_farplane );
413 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
415 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
417 if (fgGetBool("/environment/clouds/status"))
418 thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER );
420 globals->get_model_mgr()->draw();
421 globals->get_aircraft_model()->draw();
425 // Update all Visuals (redraws anything graphics related)
426 void fgRenderFrame() {
427 bool draw_otw = fgGetBool("/sim/rendering/draw-otw");
428 bool skyblend = fgGetBool("/sim/rendering/skyblend");
429 bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
430 bool distance_attenuation = fgGetBool("/sim/rendering/distance-attenuation");
432 GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
433 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
435 // Process/manage pending events
436 global_events.update( delta_time_sec );
438 // static const SGPropertyNode *longitude
439 // = fgGetNode("/position/longitude-deg");
440 // static const SGPropertyNode *latitude
441 // = fgGetNode("/position/latitude-deg");
442 // static const SGPropertyNode *altitude
443 // = fgGetNode("/position/altitude-ft");
444 static const SGPropertyNode *groundlevel_nearplane
445 = fgGetNode("/sim/current-view/ground-level-nearplane-m");
447 // Update the default (kludged) properties.
450 FGViewer *current__view = globals->get_current_view();
452 fgLIGHT *l = &cur_light_params;
453 static double last_visibility = -9999;
456 double actual_visibility;
457 if (fgGetBool("/environment/clouds/status"))
458 actual_visibility = thesky->get_visibility();
460 actual_visibility = fgGetDouble("/environment/visibility-m");
461 if ( actual_visibility != last_visibility ) {
462 last_visibility = actual_visibility;
464 fog_exp_density = m_log01 / actual_visibility;
465 fog_exp2_density = sqrt_m_log01 / actual_visibility;
466 ground_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
467 if ( actual_visibility < 8000 ) {
468 rwy_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 2.5);
469 taxi_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
471 rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 );
472 taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 );
477 // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
478 // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
479 // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
480 // GLfloat mat_shininess[] = { 10.0 };
481 GLbitfield clear_mask;
483 if ( idle_state != 1000 ) {
484 // still initializing, draw the splash screen
485 if ( fgGetBool("/sim/startup/splash-screen") ) {
486 fgSplashUpdate(0.0, 1.0);
488 // Keep resetting sim time while the sim is initializing
489 globals->set_sim_time_sec( 0.0 );
490 SGAnimation::set_sim_time_sec( 0.0 );
492 // idle_state is now 1000 meaning we've finished all our
493 // initializations and are running the main loop, so this will
494 // now work without seg faulting the system.
496 // calculate our current position in cartesian space
497 globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() );
500 fgReshape( fgGetInt("/sim/startup/xsize"),
501 fgGetInt("/sim/startup/ysize") );
503 if ( fgGetBool("/sim/rendering/clouds3d") ) {
504 glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
505 cloud3d_imposter_state->force();
507 glColor4f( 1.0, 1.0, 1.0, 1.0 );
508 glEnable(GL_DEPTH_TEST);
510 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
512 #ifdef FG_USE_CLOUDS_3D
513 if ( _bcloud_orig ) {
514 Point3D c = globals->get_scenery()->get_center();
515 sgClouds3d->Set_Cloud_Orig( &c );
516 _bcloud_orig = false;
518 sgClouds3d->Update( current__view->get_absolute_view_pos() );
520 glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
521 glDisable(GL_DEPTH_TEST);
524 clear_mask = GL_DEPTH_BUFFER_BIT;
525 if ( fgGetBool("/sim/rendering/wireframe") ) {
526 clear_mask |= GL_COLOR_BUFFER_BIT;
530 if ( fgGetBool("/sim/rendering/textures") ) {
531 // glClearColor(black[0], black[1], black[2], black[3]);
532 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
533 l->adj_fog_color[2], l->adj_fog_color[3]);
534 clear_mask |= GL_COLOR_BUFFER_BIT;
537 glClearColor(l->sky_color[0], l->sky_color[1],
538 l->sky_color[2], l->sky_color[3]);
539 clear_mask |= GL_COLOR_BUFFER_BIT;
541 glClear( clear_mask );
543 // Tell GL we are switching to model view parameters
545 // I really should create a derived ssg node or use a call
546 // back or something so that I can draw the sky within the
547 // ssgCullAndDraw() function, but for now I just mimic what
548 // ssg does to set up the model view matrix
549 glMatrixMode(GL_MODELVIEW);
551 ssgSetCamera( (sgVec4 *)current__view->get_VIEW() );
553 // set the opengl state to known default values
554 default_state->force();
556 // update fog params if visibility has changed
557 double visibility_meters = fgGetDouble("/environment/visibility-m");
558 thesky->set_visibility(visibility_meters);
560 thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
561 ( global_multi_loop * fgGetInt("/sim/speed-up") )
562 / (double)fgGetInt("/sim/model-hz") );
564 // Set correct opengl fog density
565 glFogf (GL_FOG_DENSITY, fog_exp2_density);
567 // update the sky dome
570 SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
571 << cur_light_params.sky_color[0] << " "
572 << cur_light_params.sky_color[1] << " "
573 << cur_light_params.sky_color[2] << " "
574 << cur_light_params.sky_color[3] );
575 SG_LOG( SG_GENERAL, SG_BULK, " fog = "
576 << cur_light_params.fog_color[0] << " "
577 << cur_light_params.fog_color[1] << " "
578 << cur_light_params.fog_color[2] << " "
579 << cur_light_params.fog_color[3] );
580 SG_LOG( SG_GENERAL, SG_BULK,
581 " sun_angle = " << cur_light_params.sun_angle
582 << " moon_angle = " << cur_light_params.moon_angle );
584 thesky->repaint( cur_light_params.sky_color,
585 cur_light_params.adj_fog_color,
586 cur_light_params.cloud_color,
587 cur_light_params.sun_angle,
588 cur_light_params.moon_angle,
589 globals->get_ephem()->getNumPlanets(),
590 globals->get_ephem()->getPlanets(),
591 globals->get_ephem()->getNumStars(),
592 globals->get_ephem()->getStars() );
595 SG_LOG( SG_GENERAL, SG_BULK,
596 "thesky->reposition( view_pos = " << view_pos[0] << " "
597 << view_pos[1] << " " << view_pos[2] );
598 SG_LOG( SG_GENERAL, SG_BULK,
599 " zero_elev = " << zero_elev[0] << " "
600 << zero_elev[1] << " " << zero_elev[2]
601 << " lon = " << cur_fdm_state->get_Longitude()
602 << " lat = " << cur_fdm_state->get_Latitude() );
603 SG_LOG( SG_GENERAL, SG_BULK,
604 " sun_rot = " << cur_light_params.sun_rotation
605 << " gst = " << SGTime::cur_time_params->getGst() );
606 SG_LOG( SG_GENERAL, SG_BULK,
607 " sun ra = " << globals->get_ephem()->getSunRightAscension()
608 << " sun dec = " << globals->get_ephem()->getSunDeclination()
609 << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
610 << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
613 // The sun and moon distances are scaled down versions
614 // of the actual distance to get both the moon and the sun
615 // within the range of the far clip plane.
616 // Moon distance: 384,467 kilometers
617 // Sun distance: 150,000,000 kilometers
618 double sun_horiz_eff, moon_horiz_eff;
619 if (fgGetBool("/sim/rendering/horizon-effect")) {
620 sun_horiz_eff = 0.67+pow(0.5+cos(cur_light_params.sun_angle*2)/2,0.33)/3;
621 moon_horiz_eff = 0.67+pow(0.5+cos(cur_light_params.moon_angle*2)/2,0.33)/3;
623 sun_horiz_eff = moon_horiz_eff = 1.0;
625 thesky->reposition( current__view->get_view_pos(),
626 current__view->get_zero_elev(),
627 current__view->get_world_up(),
628 current__view->getLongitude_deg()
629 * SGD_DEGREES_TO_RADIANS,
630 current__view->getLatitude_deg()
631 * SGD_DEGREES_TO_RADIANS,
632 current__view->getAltitudeASL_ft()
634 cur_light_params.sun_rotation,
635 globals->get_time_params()->getGst(),
636 globals->get_ephem()->getSunRightAscension(),
637 globals->get_ephem()->getSunDeclination(),
638 50000.0 * sun_horiz_eff,
639 globals->get_ephem()->getMoonRightAscension(),
640 globals->get_ephem()->getMoonDeclination(),
641 40000.0 * moon_horiz_eff );
644 glEnable( GL_DEPTH_TEST );
645 if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
647 glFogi( GL_FOG_MODE, GL_EXP2 );
648 glFogfv( GL_FOG_COLOR, l->adj_fog_color );
651 // set sun/lighting parameters
652 ssgGetLight( 0 ) -> setPosition( l->sun_vec );
654 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
655 // we only update GL_AMBIENT for our lights we will never get
656 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
657 // explicitely to black.
658 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
660 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
661 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
662 ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular );
664 // texture parameters
665 // glEnable( GL_TEXTURE_2D );
666 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
667 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
669 // glMatrixMode( GL_PROJECTION );
671 ssgSetFOV( current__view->get_h_fov(),
672 current__view->get_v_fov() );
675 current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
676 - globals->get_scenery()->get_cur_elev();
679 scene_nearplane = 10.0f;
680 scene_farplane = 120000.0f;
682 scene_nearplane = groundlevel_nearplane->getDoubleValue();
683 scene_farplane = 120000.0f;
686 ssgSetNearFar( scene_nearplane, scene_farplane );
688 // $$$ begin - added VS Renganthan 17 Oct 2K
691 // $$$ end - added VS Renganthan 17 Oct 2K
693 # ifdef FG_NETWORK_OLK
694 if ( fgGetBool("/sim/networking/network-olk") ) {
696 other = head->next; /* put listpointer to start */
697 while ( other != tail) { /* display all except myself */
698 if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) {
699 other->fgd_sel->select(1);
700 sgSetCoord( &fgdpos, other->sgFGD_COORD );
701 other->fgd_pos->setTransform( &fgdpos );
706 // fgd_sel->select(1);
707 // sgCopyMat4( sgTUX, current_view.sgVIEW);
709 // sgSetCoord( &fgdpos, sgFGD_VIEW );
710 // fgd_pos->setTransform( &fgdpos);
715 // Update any multiplayer models
716 globals->get_multiplayer_rx_mgr()->Update();
719 if ( draw_otw && skyblend )
721 // draw the sky backdrop
723 // we need a white diffuse light for the phase of the moon
724 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
728 // return to the desired diffuse color
729 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
732 // draw the ssg scene
733 glEnable( GL_DEPTH_TEST );
735 ssgSetNearFar( scene_nearplane, scene_farplane );
737 if ( fgGetBool("/sim/rendering/wireframe") ) {
739 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
742 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
745 // This is a bit kludgy. Every 200 frames, do an extra
746 // traversal of the scene graph without drawing anything, but
747 // with the field-of-view set to 360x360 degrees. This
748 // ensures that out-of-range random objects that are not in
749 // the current view frustum will still be freed properly.
750 static int counter = 0;
752 if (counter == 200) {
755 // No need to put the near plane too close;
756 // this way, at least the aircraft can be
758 f.setNearFar(1000, 1000000);
760 ssgGetModelviewMatrix(m);
761 globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
765 // change state for lighting here
767 // draw runway lighting
768 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
769 ssgSetNearFar( scene_nearplane, scene_farplane );
771 if ( enhanced_lighting ) {
773 // Enable states for drawing points with GL_extension
774 glEnable(GL_POINT_SMOOTH);
776 if ( distance_attenuation && glPointParameterIsSupported )
778 // Enable states for drawing points with GL_extension
779 glEnable(GL_POINT_SMOOTH);
781 float quadratic[3] = {1.0, 0.001, 0.0000001};
782 // makes the points fade as they move away
783 glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT, quadratic);
784 glPointParameterfPtr(GL_POINT_SIZE_MIN_EXT, 1.0);
789 // blending function for runway lights
790 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
793 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
794 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
795 glEnable(GL_TEXTURE_GEN_S);
796 glEnable(GL_TEXTURE_GEN_T);
797 glPolygonMode(GL_FRONT, GL_POINT);
799 // draw runway lighting
801 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
804 // change punch through and then draw taxi lighting
805 glFogf ( GL_FOG_DENSITY, fog_exp2_density );
807 // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
808 // glFogfv ( GL_FOG_COLOR, taxi_fog );
810 ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
814 glPolygonMode(GL_FRONT, GL_FILL);
815 glDisable(GL_TEXTURE_GEN_S);
816 glDisable(GL_TEXTURE_GEN_T);
818 //static int _frame_count = 0;
819 //if (_frame_count % 30 == 0) {
820 // printf("SSG: %s\n", ssgShowStats());
828 if ( enhanced_lighting ) {
829 if ( distance_attenuation && glPointParameterIsSupported )
831 glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT,
832 default_attenuation);
836 glDisable(GL_POINT_SMOOTH);
839 // draw ground lighting
840 glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
842 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
846 // draw the sky cloud layers
847 if ( draw_otw && fgGetBool("/environment/clouds/status") )
849 thesky->postDraw( cur_fdm_state->get_Altitude()
850 * SG_FEET_TO_METER );
854 if ( draw_otw && fgGetBool("/sim/rendering/clouds3d") )
857 glDisable( GL_LIGHTING );
858 // cout << "drawing new clouds" << endl;
860 glEnable(GL_DEPTH_TEST);
862 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
865 glEnable( GL_TEXTURE_2D );
866 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
867 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
868 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
869 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
872 #ifdef FG_USE_CLOUDS_3D
873 sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
876 glEnable( GL_LIGHTING );
877 glEnable( GL_DEPTH_TEST );
878 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
882 globals->get_model_mgr()->draw();
883 globals->get_aircraft_model()->draw();
886 // display HUD && Panel
888 glDisable( GL_DEPTH_TEST );
889 // glDisable( GL_CULL_FACE );
890 // glDisable( GL_TEXTURE_2D );
892 // update the controls subsystem
893 globals->get_controls()->update(delta_time_sec);
895 hud_and_panel->apply();
898 // Use the hud_and_panel ssgSimpleState for rendering the ATC output
899 // This only works properly if called before the panel call
900 if((fgGetBool("/sim/ATC/enabled")) || (fgGetBool("/sim/ai-traffic/enabled")))
901 globals->get_ATC_display()->update(delta_time_sec);
903 // update the panel subsystem
904 if ( globals->get_current_panel() != NULL ) {
905 globals->get_current_panel()->update(delta_time_sec);
909 // We can do translucent menus, so why not. :-)
911 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
913 // glDisable ( GL_BLEND ) ;
915 glEnable( GL_DEPTH_TEST );
918 // Fade out the splash screen over the first three seconds.
919 double t = globals->get_sim_time_sec();
921 fgSplashUpdate(0.0, 1.0);
922 } else if ( t <= 3.0) {
923 fgSplashUpdate(0.0, (3.0 - t) / 2.0);
931 // Update internal time dependent calculations (i.e. flight model)
932 // FIXME: this distinction is obsolete; all subsystems now get delta
934 void fgUpdateTimeDepCalcs() {
935 static bool inited = false;
937 static const SGPropertyNode *replay
938 = fgGetNode( "/sim/replay/master", true );
939 static SGPropertyNode *replay_time
940 = fgGetNode( "/sim/replay/time", true );
941 static const SGPropertyNode *replay_end_time
942 = fgGetNode( "/sim/replay/end-time", true );
944 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
946 fgLIGHT *l = &cur_light_params;
948 // Initialize the FDM here if it hasn't been and if we have a
949 // scenery elevation hit.
951 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
952 // << " cur_elev = " << scenery.get_cur_elev() << endl;
954 if ( !cur_fdm_state->get_inited() &&
955 globals->get_scenery()->get_cur_elev() > -9990 )
957 SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");
958 cur_fdm_state->init();
959 if ( cur_fdm_state->get_bound() ) {
960 cur_fdm_state->unbind();
962 cur_fdm_state->bind();
965 // conceptually, the following block could be done for each fdm
967 if ( !cur_fdm_state->get_inited() ) {
968 // do nothing, fdm isn't inited yet
970 // we have been inited, and we are good to go ...
976 if ( ! replay->getBoolValue() ) {
977 globals->get_autopilot()->update(delta_time_sec);
978 cur_fdm_state->update(delta_time_sec);
980 FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
981 r->replay( replay_time->getDoubleValue() );
982 replay_time->setDoubleValue( replay_time->getDoubleValue()
987 globals->get_model_mgr()->update(delta_time_sec);
988 globals->get_aircraft_model()->update(delta_time_sec);
990 // update the view angle
991 globals->get_viewmgr()->update(delta_time_sec);
995 // Update solar system
996 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
997 globals->get_time_params()->getLst(),
998 cur_fdm_state->get_Latitude() );
1000 // Update radio stack model
1001 current_radiostack->update(delta_time_sec);
1005 void fgInitTimeDepCalcs( void ) {
1010 static const double alt_adjust_ft = 3.758099;
1011 static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
1014 // What should we do when we have nothing else to do? Let's get ready
1015 // for the next move and update the display?
1016 static void fgMainLoop( void ) {
1017 int model_hz = fgGetInt("/sim/model-hz");
1019 static const SGPropertyNode *longitude
1020 = fgGetNode("/position/longitude-deg");
1021 static const SGPropertyNode *latitude
1022 = fgGetNode("/position/latitude-deg");
1023 static const SGPropertyNode *altitude
1024 = fgGetNode("/position/altitude-ft");
1025 static const SGPropertyNode *clock_freeze
1026 = fgGetNode("/sim/freeze/clock", true);
1027 static const SGPropertyNode *cur_time_override
1028 = fgGetNode("/sim/time/cur-time-override", true);
1029 static const SGPropertyNode *replay
1030 = fgGetNode("/sim/replay/master", true);
1032 // Update the elapsed time.
1033 static bool first_time = true;
1035 last_time_stamp.stamp();
1039 double throttle_hz = fgGetDouble("/sim/frame-rate-throttle-hz", 0.0);
1040 if ( throttle_hz > 0.0 ) {
1041 // simple frame rate throttle
1042 double dt = 1000000.0 / throttle_hz;
1043 current_time_stamp.stamp();
1044 while ( current_time_stamp - last_time_stamp < dt ) {
1045 current_time_stamp.stamp();
1048 // run as fast as the app will go
1049 current_time_stamp.stamp();
1052 delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0;
1053 if ( replay->getBoolValue() ) {
1054 replay_dt_sec = delta_time_sec;
1056 if ( clock_freeze->getBoolValue() ) {
1059 last_time_stamp = current_time_stamp;
1060 globals->inc_sim_time_sec( delta_time_sec );
1061 SGAnimation::set_sim_time_sec( globals->get_sim_time_sec() );
1063 static long remainder = 0;
1065 #ifdef FANCY_FRAME_COUNTER
1069 static time_t last_time = 0;
1070 static int frames = 0;
1071 #endif // FANCY_FRAME_COUNTER
1073 SGTime *t = globals->get_time_params();
1075 sglog().setLogLevels( SG_ALL, (sgDebugPriority)fgGetInt("/sim/log-level") );
1076 sglog().setLogLevels( SG_ALL, SG_INFO );
1078 SGLocation * acmodel_location = 0;
1079 if(cur_fdm_state->getACModel() != 0) {
1080 acmodel_location = (SGLocation *) cur_fdm_state->getACModel()->get3DModel()->getSGLocation();
1083 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
1084 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
1086 #ifdef FG_NETWORK_OLK
1087 if ( fgGetBool("/sim/networking/network-olk") ) {
1088 if ( net_is_registered == 0 ) { // We first have to reg. to fgd
1089 // printf("FGD: Netupdate\n");
1090 fgd_send_com( "A", FGFS_host); // Send Mat4 data
1091 fgd_send_com( "B", FGFS_host); // Recv Mat4 data
1096 #if defined( ENABLE_PLIB_JOYSTICK )
1097 // Read joystick and update control settings
1098 // if ( fgGetString("/sim/control-mode") == "joystick" )
1100 // fgJoystickRead();
1102 #elif defined( ENABLE_GLUT_JOYSTICK )
1103 // Glut joystick support works by feeding a joystick handler
1104 // function to glut. This is taken care of once in the joystick
1105 // init routine and we don't have to worry about it again.
1108 // Fix elevation. I'm just sticking this here for now, it should
1109 // probably move eventually
1111 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
1112 scenery.get_cur_elev(),
1113 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1114 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1116 // Curt is this code used? I don't see any problems when I comment it out.
1117 if ( acmodel_location != 0 ) {
1118 if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) {
1119 if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER <
1120 (acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0) ) {
1121 // now set aircraft altitude above ground
1122 printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n",
1123 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
1124 acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0,
1125 acmodel_location->get_cur_elev_m() + alt_adjust_m );
1126 cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m()
1127 + alt_adjust_m) * SG_METER_TO_FEET );
1128 SG_LOG( SG_ALL, SG_DEBUG,
1129 "<*> resetting altitude to "
1130 << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER
1135 // End of code in question. (see Curt is this code used? above)
1137 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
1138 scenery.get_cur_elev(),
1139 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1140 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1142 // cout << "Warp = " << globals->get_warp() << endl;
1145 static bool last_clock_freeze = false;
1147 if ( clock_freeze->getBoolValue() ) {
1148 // clock freeze requested
1149 if ( cur_time_override->getLongValue() == 0 ) {
1150 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
1151 globals->set_warp( 0 );
1154 // no clock freeze requested
1155 if ( last_clock_freeze == true ) {
1156 // clock just unfroze, let's set warp as the difference
1157 // between frozen time and current time so we don't get a
1158 // time jump (and corresponding sky object and lighting
1160 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
1161 fgSetLong( "/sim/time/cur-time-override", 0 );
1163 if ( globals->get_warp_delta() != 0 ) {
1164 globals->inc_warp( globals->get_warp_delta() );
1168 last_clock_freeze = clock_freeze->getBoolValue();
1170 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1171 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1172 cur_time_override->getLongValue(),
1173 globals->get_warp() );
1175 if ( globals->get_warp_delta() != 0 ) {
1176 fgUpdateSkyAndLightingParams();
1179 // update magvar model
1180 globals->get_mag()->update( longitude->getDoubleValue()
1181 * SGD_DEGREES_TO_RADIANS,
1182 latitude->getDoubleValue()
1183 * SGD_DEGREES_TO_RADIANS,
1184 altitude->getDoubleValue() * SG_FEET_TO_METER,
1185 globals->get_time_params()->getJD() );
1187 // Get elapsed time (in usec) for this past frame
1188 elapsed = fgGetTimeInterval();
1189 SG_LOG( SG_ALL, SG_DEBUG,
1190 "Elapsed time interval is = " << elapsed
1191 << ", previous remainder is = " << remainder );
1193 // Calculate frame rate average
1194 #ifdef FANCY_FRAME_COUNTER
1195 /* old fps calculation */
1196 if ( elapsed > 0 ) {
1199 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
1200 tmp = general.get_frame(i);
1202 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
1203 general.set_frame(i+1,tmp);
1205 tmp = 1000000.0 / (float)elapsed;
1206 general.set_frame(0,tmp);
1207 // printf("frame[0] = %.2f\n", general.frames[0]);
1209 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
1210 // printf("ave = %.2f\n", general.frame_rate);
1213 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
1214 general.set_frame_rate( frames );
1215 fgSetInt("/sim/frame-rate", frames);
1216 SG_LOG( SG_ALL, SG_DEBUG,
1217 "--> Frame rate is = " << general.get_frame_rate() );
1220 last_time = t->get_cur_time();
1224 // Run ATC subsystem
1225 if (fgGetBool("/sim/ATC/enabled"))
1226 globals->get_ATC_mgr()->update(delta_time_sec);
1228 // Run the AI subsystem
1229 if (fgGetBool("/sim/ai-traffic/enabled"))
1230 globals->get_AI_mgr()->update(delta_time_sec);
1234 // Calculate model iterations needed for next frame
1235 elapsed += remainder;
1237 global_multi_loop = (long)(((double)elapsed * 0.000001) * model_hz );
1238 remainder = elapsed - ( (global_multi_loop*1000000) / model_hz );
1239 SG_LOG( SG_ALL, SG_DEBUG,
1240 "Model iterations needed = " << global_multi_loop
1241 << ", new remainder = " << remainder );
1243 // chop max interations to something reasonable if the sim was
1244 // delayed for an excesive amount of time
1245 if ( global_multi_loop > 2.0 * model_hz ) {
1246 global_multi_loop = (int)(2.0 * model_hz );
1251 if ( global_multi_loop > 0 ) {
1252 fgUpdateTimeDepCalcs();
1254 SG_LOG( SG_ALL, SG_DEBUG,
1255 "Elapsed time is zero ... we're zinging" );
1258 // Do any I/O channel work that might need to be done
1259 globals->get_io()->update( delta_time_sec );
1261 // see if we need to load any deferred-load textures
1262 globals->get_matlib()->load_next_deferred();
1264 // Run audio scheduler
1265 #ifdef ENABLE_AUDIO_SUPPORT
1266 if ( fgGetBool("/sim/sound/audible")
1267 && globals->get_soundmgr()->is_working() ) {
1268 globals->get_soundmgr()->update( delta_time_sec );
1272 globals->get_subsystem_mgr()->update(delta_time_sec);
1275 // Tile Manager updates - see if we need to load any new scenery tiles.
1276 // this code ties together the fdm, viewer and scenery classes...
1277 // we may want to move this to it's own class at some point
1279 double visibility_meters = fgGetDouble("/environment/visibility-m");
1280 FGViewer *current_view = globals->get_current_view();
1282 // update tile manager for FDM...
1283 // ...only if location is different than the viewer (to avoid duplicating effort)
1284 if( acmodel_location != current_view->getSGLocation() ) {
1285 if( acmodel_location != 0 ) {
1286 globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location,
1287 visibility_meters );
1288 globals->get_tile_mgr()->
1289 update( acmodel_location, visibility_meters,
1290 acmodel_location->get_absolute_view_pos(globals->get_scenery()->get_center()) );
1291 // save results of update in SGLocation for fdm...
1292 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1294 set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1297 set_tile_center( globals->get_scenery()->get_next_center() );
1301 globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(),
1302 visibility_meters );
1303 // update tile manager for view...
1304 // IMPORTANT!!! the tilemgr update for view location _must_ be done last
1305 // after the FDM's until all of Flight Gear code references the viewer's location
1306 // for elevation instead of the "scenery's" current elevation.
1307 SGLocation *view_location = globals->get_current_view()->getSGLocation();
1308 globals->get_tile_mgr()->update( view_location, visibility_meters,
1309 current_view->get_absolute_view_pos() );
1310 // save results of update in SGLocation for fdm...
1311 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1312 current_view->getSGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1314 current_view->getSGLocation()->set_tile_center( globals->get_scenery()->get_next_center() );
1316 // If fdm location is same as viewer's then we didn't do the update for fdm location
1317 // above so we need to save the viewer results in the fdm SGLocation as well...
1318 if( acmodel_location == current_view->getSGLocation() ) {
1319 if( acmodel_location != 0 ) {
1320 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1321 acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1323 acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
1327 // END Tile Manager udpates
1332 SG_LOG( SG_ALL, SG_DEBUG, "" );
1336 // This is the top level master main function that is registered as
1337 // our idle funciton
1339 // The first few passes take care of initialization things (a couple
1340 // per pass) and once everything has been initialized fgMainLoop from
1343 static void fgIdleFunction ( void ) {
1344 // printf("idle state == %d\n", idle_state);
1346 if ( idle_state == 0 ) {
1347 // Initialize the splash screen right away
1348 if ( fgGetBool("/sim/startup/splash-screen") ) {
1353 } else if ( idle_state == 1 ) {
1354 // Initialize audio support
1355 #ifdef ENABLE_AUDIO_SUPPORT
1357 // Start the intro music
1358 if ( fgGetBool("/sim/startup/intro-music") ) {
1359 SGPath mp3file( globals->get_fg_root() );
1360 mp3file.append( "Sounds/intro.mp3" );
1362 SG_LOG( SG_GENERAL, SG_INFO,
1363 "Starting intro music: " << mp3file.str() );
1365 #if defined( __CYGWIN__ )
1366 string command = "start /m `cygpath -w " + mp3file.str() + "`";
1367 #elif defined( WIN32 )
1368 string command = "start /m " + mp3file.str();
1370 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
1373 system ( command.c_str() );
1378 } else if ( idle_state == 2 ) {
1379 // These are a few miscellaneous things that aren't really
1380 // "subsystems" but still need to be initialized.
1383 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
1384 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
1389 } else if ( idle_state == 3 ) {
1390 // This is the top level init routine which calls all the
1391 // other subsystem initialization routines. If you are adding
1392 // a subsystem to flightgear, its initialization call should
1393 // located in this routine.
1394 if( !fgInitSubsystems()) {
1395 SG_LOG( SG_GENERAL, SG_ALERT,
1396 "Subsystem initializations failed ..." );
1401 } else if ( idle_state == 4 ) {
1402 // setup OpenGL view parameters
1405 // Read the list of available aircrafts
1409 } else if ( idle_state == 5 ) {
1412 } else if ( idle_state == 6 ) {
1416 SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
1417 fgReshape( fgGetInt("/sim/startup/xsize"),
1418 fgGetInt("/sim/startup/ysize") );
1421 if ( idle_state == 1000 ) {
1422 // We've finished all our initialization steps, from now on we
1423 // run the main loop.
1425 glutIdleFunc(fgMainLoop);
1427 if ( fgGetBool("/sim/startup/splash-screen") ) {
1428 fgSplashUpdate(0.0, 1.0);
1433 // options.cxx needs to see this for toggle_panel()
1434 // Handle new window size or exposure
1435 void fgReshape( int width, int height ) {
1438 if ( (!fgGetBool("/sim/virtual-cockpit"))
1439 && fgPanelVisible() && idle_state == 1000 ) {
1440 view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
1441 globals->get_current_panel()->getYOffset()) / 768.0);
1447 FGViewMgr *viewmgr = globals->get_viewmgr();
1448 for ( int i = 0; i < viewmgr->size(); ++i ) {
1449 viewmgr->get_view(i)->
1450 set_aspect_ratio((float)view_h / (float)width);
1453 glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) );
1455 fgSetInt("/sim/startup/xsize", width);
1456 fgSetInt("/sim/startup/ysize", height);
1457 guiInitMouse(width, height);
1459 ssgSetFOV( viewmgr->get_current_view()->get_h_fov(),
1460 viewmgr->get_current_view()->get_v_fov() );
1464 #ifdef FG_USE_CLOUDS_3D
1465 sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(),
1466 viewmgr->get_current_view()->get_v_fov() );
1471 // Initialize GLUT and define a main window
1472 static bool fgGlutInit( int *argc, char **argv ) {
1474 #if !defined( macintosh )
1475 // GLUT will extract all glut specific options so later on we only
1476 // need wory about our own.
1477 glutInit(argc, argv);
1480 // Define Display Parameters. Clouds3d works best with --bpp32 option
1481 if ( fgGetBool("/sim/rendering/clouds3d") ) {
1482 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_ALPHA );
1484 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
1487 SG_LOG( SG_GENERAL, SG_INFO, "Opening a window: " <<
1488 fgGetInt("/sim/startup/xsize") << "x"
1489 << fgGetInt("/sim/startup/ysize") );
1491 // Define initial window size
1492 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1493 fgGetInt("/sim/startup/ysize") );
1495 // Initialize windows
1496 if ( !fgGetBool("/sim/startup/game-mode")) {
1497 // Open the regular window
1498 glutCreateWindow("FlightGear");
1499 #ifndef GLUT_WRONG_VERSION
1501 // Open the cool new 'game mode' window
1502 char game_mode_str[256];
1503 //#define SYNC_OPENGL_WITH_DESKTOP_SETTINGS
1504 #if defined(WIN32) && defined(SYNC_OPENGL_WITH_DESKTOP_SETTINGS)
1505 #ifndef ENUM_CURRENT_SETTINGS
1506 #define ENUM_CURRENT_SETTINGS ((DWORD)-1)
1507 #define ENUM_REGISTRY_SETTINGS ((DWORD)-2)
1511 dm.dmSize = sizeof(DEVMODE);
1512 EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
1513 fgSetInt("/sim/startup/xsize", dm.dmPelsWidth);
1514 fgSetInt("/sim/startup/ysize", dm.dmPelsHeight);
1515 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1516 fgGetInt("/sim/startup/ysize") );
1517 sprintf( game_mode_str, "%dx%d:%d@%d",
1521 dm.dmDisplayFrequency );
1523 // Open the cool new 'game mode' window
1524 sprintf( game_mode_str, "width=%d height=%d bpp=%d",
1525 fgGetInt("/sim/startup/xsize"),
1526 fgGetInt("/sim/startup/ysize"),
1527 fgGetInt("/sim/rendering/bits-per-pixel"));
1529 #endif // HAVE_WINDOWS_H
1530 SG_LOG( SG_GENERAL, SG_INFO,
1531 "game mode params = " << game_mode_str );
1532 glutGameModeString( game_mode_str );
1533 glutEnterGameMode();
1534 #endif // GLUT_WRONG_VERSION
1537 // This seems to be the absolute earliest in the init sequence
1538 // that these calls will return valid info. Too bad it's after
1539 // we've already created and sized out window. :-(
1540 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
1541 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
1542 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
1543 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
1546 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
1547 general.set_glMaxTexSize( tmp );
1548 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
1550 glGetIntegerv( GL_DEPTH_BITS, &tmp );
1551 general.set_glDepthBits( tmp );
1552 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
1558 // Initialize GLUT event handlers
1559 static bool fgGlutInitEvents( void ) {
1560 // call fgReshape() on window resizes
1561 glutReshapeFunc( fgReshape );
1563 // keyboard and mouse callbacks are set in FGInput::init
1565 // call fgMainLoop() whenever there is
1566 // nothing else to do
1567 glutIdleFunc( fgIdleFunction );
1570 glutDisplayFunc( fgRenderFrame );
1575 // Main top level initialization
1576 static bool fgMainInit( int argc, char **argv ) {
1578 #if defined( macintosh )
1579 freopen ("stdout.txt", "w", stdout );
1580 freopen ("stderr.txt", "w", stderr );
1581 argc = ccommand( &argv );
1584 // set default log levels
1585 sglog().setLogLevels( SG_ALL, SG_INFO );
1588 #ifdef FLIGHTGEAR_VERSION
1589 version = FLIGHTGEAR_VERSION;
1591 version = "unknown version";
1593 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
1595 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
1597 // Allocate global data structures. This needs to happen before
1598 // we parse command line options
1600 globals = new FGGlobals;
1602 // seed the random number generater
1605 SGRoute *route = new SGRoute;
1606 globals->set_route( route );
1608 FGControls *controls = new FGControls;
1609 globals->set_controls( controls );
1611 string_list *col = new string_list;
1612 globals->set_channel_options_list( col );
1614 // Scan the config file(s) and command line options to see if
1615 // fg_root was specified (ignore all other options for now)
1616 fgInitFGRoot(argc, argv);
1618 // Check for the correct base package version
1619 static char required_version[] = "0.9.2";
1620 string base_version = fgBasePackageVersion();
1621 if ( !(base_version == required_version) ) {
1622 // tell the operator how to use this application
1624 cerr << endl << "Base package check failed ... " \
1625 << "Found version " << base_version << " at: " \
1626 << globals->get_fg_root() << endl;
1627 cerr << "Please upgrade to version: " << required_version << endl;
1631 // Initialize the Aircraft directory to "" (UIUC)
1634 // Load the configuration parameters. (Command line options
1635 // overrides config file options. Config file options override
1637 if ( !fgInitConfig(argc, argv) ) {
1638 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
1642 // Initialize the Window/Graphics environment.
1643 if( !fgGlutInit(&argc, argv) ) {
1644 SG_LOG( SG_GENERAL, SG_ALERT, "GLUT initialization failed ..." );
1648 // Initialize the various GLUT Event Handlers.
1649 if( !fgGlutInitEvents() ) {
1650 SG_LOG( SG_GENERAL, SG_ALERT,
1651 "GLUT event handler initialization failed ..." );
1655 // Initialize plib net interface
1656 netInit( &argc, argv );
1658 // Initialize ssg (from plib). Needs to come before we do any
1659 // other ssg stuff, but after opengl/glut has been initialized.
1662 // Initialize the user interface (we need to do this before
1663 // passing off control to glut and before fgInitGeneral to get our
1667 // Read the list of available aircrafts
1670 #ifdef GL_EXT_texture_lod_bias
1671 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
1674 // get the address of our OpenGL extensions
1675 if ( fgGetBool("/sim/rendering/distance-attenuation") )
1677 if (SGIsOpenGLExtensionSupported("GL_EXT_point_parameters") ) {
1678 glPointParameterIsSupported = true;
1679 glPointParameterfPtr = (glPointParameterfProc)
1680 SGLookupFunction("glPointParameterfEXT");
1681 glPointParameterfvPtr = (glPointParameterfvProc)
1682 SGLookupFunction("glPointParameterfvEXT");
1684 } else if ( SGIsOpenGLExtensionSupported("GL_ARB_point_parameters") ) {
1685 glPointParameterIsSupported = true;
1686 glPointParameterfPtr = (glPointParameterfProc)
1687 SGLookupFunction("glPointParameterfARB");
1688 glPointParameterfvPtr = (glPointParameterfvProc)
1689 SGLookupFunction("glPointParameterfvARB");
1691 glPointParameterIsSupported = false;
1694 // based on the requested presets, calculate the true starting
1699 SGTime *t = fgInitTime();
1700 globals->set_time_params( t );
1702 // Do some quick general initializations
1703 if( !fgInitGeneral()) {
1704 SG_LOG( SG_GENERAL, SG_ALERT,
1705 "General initializations failed ..." );
1709 SGPath modelpath( globals->get_fg_root() );
1710 ssgModelPath( (char *)modelpath.c_str() );
1712 ////////////////////////////////////////////////////////////////////
1713 // Initialize the property-based built-in commands
1714 ////////////////////////////////////////////////////////////////////
1717 ////////////////////////////////////////////////////////////////////
1718 // Initialize the material manager
1719 ////////////////////////////////////////////////////////////////////
1720 globals->set_matlib( new SGMaterialLib );
1722 globals->set_model_lib(new SGModelLib);
1724 ////////////////////////////////////////////////////////////////////
1725 // Initialize the TG scenery subsystem.
1726 ////////////////////////////////////////////////////////////////////
1727 globals->set_scenery( new FGScenery );
1728 globals->get_scenery()->init();
1729 globals->get_scenery()->bind();
1730 globals->set_tile_mgr( new FGTileMgr );
1732 ////////////////////////////////////////////////////////////////////
1733 // Initialize the general model subsystem.
1734 ////////////////////////////////////////////////////////////////////
1735 globals->set_model_mgr(new FGModelMgr);
1736 globals->get_model_mgr()->init();
1737 globals->get_model_mgr()->bind();
1739 ////////////////////////////////////////////////////////////////////
1740 // Initialize the 3D aircraft model subsystem (has a dependency on
1741 // the scenery subsystem.)
1742 ////////////////////////////////////////////////////////////////////
1743 globals->set_aircraft_model(new FGAircraftModel);
1744 globals->get_aircraft_model()->init();
1745 globals->get_aircraft_model()->bind();
1747 ////////////////////////////////////////////////////////////////////
1748 // Initialize the view manager subsystem.
1749 ////////////////////////////////////////////////////////////////////
1751 FGViewMgr *viewmgr = new FGViewMgr;
1752 globals->set_viewmgr( viewmgr );
1757 // Initialize the sky
1758 SGPath ephem_data_path( globals->get_fg_root() );
1759 ephem_data_path.append( "Astro" );
1760 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
1761 ephem->update( globals->get_time_params()->getMjd(),
1762 globals->get_time_params()->getLst(),
1764 globals->set_ephem( ephem );
1766 // TODO: move to environment mgr
1768 SGPath texture_path(globals->get_fg_root());
1769 texture_path.append("Textures");
1770 texture_path.append("Sky");
1771 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
1772 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
1773 thesky->add_cloud_layer(layer);
1777 SGPath sky_tex_path( globals->get_fg_root() );
1778 sky_tex_path.append( "Textures" );
1779 sky_tex_path.append( "Sky" );
1780 thesky->texture_path( sky_tex_path.str() );
1782 // The sun and moon diameters are scaled down numbers of the
1783 // actual diameters. This was needed to fit bot the sun and the
1784 // moon within the distance to the far clip plane.
1785 // Moon diameter: 3,476 kilometers
1786 // Sun diameter: 1,390,000 kilometers
1787 thesky->build( 80000.0, 80000.0,
1789 globals->get_ephem()->getNumPlanets(),
1790 globals->get_ephem()->getPlanets(),
1791 globals->get_ephem()->getNumStars(),
1792 globals->get_ephem()->getStars() );
1794 // Initialize MagVar model
1795 SGMagVar *magvar = new SGMagVar();
1796 globals->set_mag( magvar );
1799 // kludge to initialize mag compass
1800 // (should only be done for in-flight
1802 // update magvar model
1803 globals->get_mag()->update( fgGetDouble("/position/longitude-deg")
1804 * SGD_DEGREES_TO_RADIANS,
1805 fgGetDouble("/position/latitude-deg")
1806 * SGD_DEGREES_TO_RADIANS,
1807 fgGetDouble("/position/altitude-ft")
1809 globals->get_time_params()->getJD() );
1810 double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
1811 fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
1813 // airport = new ssgBranch;
1814 // airport->setName( "Airport Lighting" );
1815 // lighting->addKid( airport );
1821 #ifdef FG_NETWORK_OLK
1822 // Do the network intialization
1823 if ( fgGetBool("/sim/networking/network-olk") ) {
1824 printf("Multipilot mode %s\n",
1825 fg_net_init( globals->get_scenery()->get_scene_graph() ) );
1829 // build our custom render states
1830 fgBuildRenderStates();
1832 // pass control off to the master GLUT event handler
1835 // we never actually get here ... but to avoid compiler warnings,
1841 // $$$ end - added VS Renganathan, 15 Oct 2K
1842 // - added Venky , 12 Nov 2K
1844 #if defined(__linux__) && defined(__i386__)
1846 static void handleFPE (int);
1851 fpu_control_t fpe_flags = 0;
1852 _FPU_GETCW(fpe_flags);
1853 // fpe_flags &= ~_FPU_MASK_IM; // invalid operation
1854 // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
1855 // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
1856 // fpe_flags &= ~_FPU_MASK_OM; // overflow
1857 // fpe_flags &= ~_FPU_MASK_UM; // underflow
1858 // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
1859 _FPU_SETCW(fpe_flags);
1860 signal(SIGFPE, handleFPE);
1867 SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
1880 short CPSGetCurrentProcess(PSN *psn);
1881 short CPSSetProcessName (PSN *psn, char *processname);
1882 short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
1883 short CPSSetFrontProcess(PSN *psn);
1886 #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
1890 // Main entry point; catch any exceptions that have made it this far.
1891 int main ( int argc, char **argv ) {
1893 // Enable floating-point exceptions for Linux/x86
1894 #if defined(__linux__) && defined(__i386__)
1898 // Enable floating-point exceptions for Windows
1899 #if defined( _MSC_VER ) && defined( DEBUG )
1900 // Christian, we should document what this does
1901 _control87( _EM_INEXACT, _MCW_EM );
1904 #if defined( HAVE_BC5PLUS )
1905 _control87(MCW_EM, MCW_EM); /* defined in float.h */
1908 // Keyboard focus hack
1913 glutInit (&argc, argv);
1915 CPSGetCurrentProcess(&psn);
1916 CPSSetProcessName(&psn, "FlightGear");
1918 CPSSetFrontProcess(&psn);
1922 // FIXME: add other, more specific
1925 fgMainInit(argc, argv);
1926 } catch (sg_throwable &t) {
1927 // We must use cerr rather than
1928 // logging, since logging may be
1930 cerr << "Fatal error: " << t.getFormattedMessage()
1931 << "\n (received from " << t.getOrigin() << ')' << endl;
1939 void fgLoadDCS(void) {
1941 ssgEntity *ship_obj = NULL;
1943 char obj_filename[25];
1945 for ( int k = 0; k < 32; k++ ) {
1949 SGPath tile_path( globals->get_fg_root());
1950 tile_path.append( "Scenery" );
1951 tile_path.append( "Objects.txt" );
1952 sg_gzifstream in( tile_path.str() );
1953 if ( ! in.is_open() ) {
1954 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
1957 SGPath modelpath( globals->get_fg_root() );
1958 modelpath.append( "Models" );
1959 modelpath.append( "Geometry" );
1961 SGPath texturepath( globals->get_fg_root() );
1962 texturepath.append( "Models" );
1963 texturepath.append( "Textures" );
1965 ssgModelPath( (char *)modelpath.c_str() );
1966 ssgTexturePath( (char *)texturepath.c_str() );
1968 ship_sel = new ssgSelector;
1971 while ( ! in.eof() ) {
1973 if ( in.get( c ) && c == '#' ) {
1977 in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
1978 /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] << " " << obj_alt[objc] << endl;
1979 int chj=getchar();*/
1981 obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
1982 obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
1984 ship_pos[objc] = new ssgTransform;
1986 // type "repeat" in objects.txt to load one more
1987 // instance of the last object.
1989 if ( strcmp(obj_filename,"repeat") != 0) {
1991 globals->get_model_lib()->load_model( globals->get_fg_root(), obj_filename, globals->get_props(), globals->get_sim_time_sec() );
1994 if ( ship_obj != NULL ) {
1995 ship_obj->setName(obj_filename);
1997 ship_obj->clrTraversalMaskBits( SSGTRAV_HOT );
1999 ship_obj->setTraversalMaskBits( SSGTRAV_HOT );
2000 ship_pos[objc]->addKid( ship_obj ); // add object to transform node
2001 ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
2002 SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: "
2005 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
2009 // temporary hack for deck lights - ultimately should move to PLib (when??)
2010 //const char *extn = file_extension ( obj_filename ) ;
2012 // ssgVertexArray *lights = new ssgVertexArray( 100 );
2013 ssgVertexArray *lightpoints = new ssgVertexArray( 100 );
2014 ssgVertexArray *lightnormals = new ssgVertexArray( 100 );
2015 ssgVertexArray *lightdir = new ssgVertexArray( 100 );
2016 int ltype[500], light_type = 0;
2017 static int ltcount = 0;
2019 sgVec3 rway_dir,rway_normal,lightpt;
2021 modelpath.append(obj_filename);
2022 sg_gzifstream in1( modelpath.str() );
2023 if ( ! in1.is_open() ) {
2024 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() );
2026 while ( ! in1.eof() ) {
2028 if ( in1.get( c ) && c == '#' ) {
2033 //cout << token << endl;
2034 if ( token == "runway" ) {
2036 sgSetVec3 (rway_dir, node[0], node[1], node[2] );
2037 } else if ( token == "edgelight" ) {
2039 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2041 } else if ( token == "taxi" ) {
2043 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2045 } else if ( token == "vasi" ) {
2047 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2049 } else if ( token == "threshold" ) {
2051 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2053 } else if ( token == "rabbit" ) {
2055 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2057 } else if ( token == "ols" ) {
2059 sgSetVec3 (rway_ols, node[0], node[1], node[2] );
2061 } else if ( token == "red" ) {
2063 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2065 } else if ( token == "green" ) {
2067 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2069 } else if ( token == "lp" ) {
2071 sgSetVec3 (lightpt, node[0], node[1], node[2] );
2072 lightpoints->add( lightpt );
2073 lightnormals->add( rway_normal );
2074 lightdir->add( rway_dir );
2075 ltype[ltcount]= light_type;
2078 if (in1.eof()) break;
2083 if ( lightpoints->getNum() ) {
2084 ssgBranch *lightpoints_branch;
2085 long int dummy = -999;
2086 dummy_tile = new FGTileEntry((SGBucket)dummy);
2087 dummy_tile->lightmaps_sequence = new ssgSelector;
2088 dummy_tile->ols_transform = new ssgTransform;
2090 // call function to generate the runway lights
2091 lightpoints_branch =
2092 dummy_tile->gen_runway_lights( lightpoints, lightnormals,
2094 lightpoints_brightness->addKid(lightpoints_branch);
2095 lightpoints_transform->addKid(lightpoints_brightness);
2096 //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
2097 lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
2098 lightpoints_transform->ref();
2099 globals->get_scenery()->get_gnd_lights_root()->addKid( lightpoints_transform );
2104 // end hack for deck lights
2108 if (in.eof()) break;
2112 SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
2114 globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node
2121 void fgUpdateDCS (void) {
2123 // double eye_lat,eye_lon,eye_alt;
2124 // static double obj_head;
2125 double sl_radius,obj_latgc;
2126 // float nresultmat[4][4];
2127 // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3;
2130 // Instantaneous Geodetic Lat/Lon/Alt of moving object
2131 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
2133 // Deck should be the first object in objects.txt in case of fdm=ada
2135 if (!strcmp(fgGetString("/sim/flight-model"), "ada")) {
2136 if ((fdm->get_iaux(1))==1)
2138 obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS;
2139 obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS;
2140 obj_alt[1] = fdm->get_daux(3);
2141 obj_pitch[1] = fdm->get_faux(1);
2142 obj_roll[1] = fdm->get_faux(2);
2146 for ( int m = 0; m < objc; m++ ) {
2147 //cout << endl << obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
2150 //Geodetic to Geocentric angles for rotation
2151 sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc);
2153 //moving object gbs-posn in cartesian coords
2154 Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]);
2155 Point3D obj_pos = sgGeodToCart( obj_posn );
2157 // Translate moving object w.r.t eye
2158 Point3D Objtrans = obj_pos - globals->get_scenery()->get_center();
2163 // rotate dynamic objects for lat,lon & alt and other motion about its axes
2166 sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]);
2168 sgVec3 ship_fwd,ship_rt,ship_up;
2169 sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll
2170 sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch
2171 sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw
2173 sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll;
2174 sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up );
2175 sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt );
2176 sgMakeRotMat4( sgROT_hdg, 180.0, ship_up );
2177 sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt );
2178 sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd );
2181 sgCopyMat4( sgTUX, sgROT_hdg );
2182 sgPostMultMat4( sgTUX, sgROT_pitch );
2183 sgPostMultMat4( sgTUX, sgROT_roll );
2184 sgPostMultMat4( sgTUX, sgROT_lat );
2185 sgPostMultMat4( sgTUX, sgROT_lon );
2186 sgPostMultMat4( sgTUX, sgTRANS );
2189 sgSetCoord(&shippos, sgTUX );
2190 ship_pos[m]->setTransform( &shippos );
2191 // temporary hack for deck lights - ultimately should move to PLib (when ??)
2193 if (lightpoints_transform) {
2194 lightpoints_transform->setTransform( &shippos );
2195 float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
2196 if ( sun_angle > 89 ) {
2197 lightpoints_brightness->select(0x01);
2199 lightpoints_brightness->select(0x00);
2208 sgXformPnt3( rp, rway_ols, sgTUX );
2209 vp = globals->get_current_view()->get_view_pos();
2210 to[0] = rp[0]-vp[0];
2211 to[1] = rp[1]-vp[1];
2212 to[2] = rp[2]-vp[2];
2213 float dist = sgLengthVec3( to );
2214 alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2];
2216 elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES;
2218 ref_elev = elev - 3.75; // +ve above, -ve below
2222 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2223 // if (ref_elev > 0.51) sel = 0x21;
2224 // if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22;
2225 // if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24;
2226 // if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28;
2227 // if (ref_elev < -0.51) sel = 0x30;
2228 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2229 // dummy_tile->lightmaps_sequence->select(sel);
2232 sgCopyVec3 (up, ship_up);
2234 sgScaleVec3 (up, 4.0*ref_elev*dist/750.0);
2236 sgScaleVec3 (up, 4.0*ref_elev);
2237 // dummy_tile->ols_transform->setTransform(up);
2238 //cout << "ref_elev " << ref_elev << endl;
2240 // end hack for deck lights
2243 if ( ship_sel != NULL ) {
2244 ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel
2248 // $$$ end - added VS Renganathan, 15 Oct 2K
2249 // added Venky , 12 Nov 2K