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;
173 # include <WeatherCM/FGLocalWeatherDatabase.h>
178 #include "fg_init.hxx"
180 #include "fg_props.hxx"
181 #include "globals.hxx"
182 #include "splash.hxx"
183 #include "viewmgr.hxx"
184 #include "options.hxx"
185 #include "logger.hxx"
188 # include <console.h> // -dw- for command line dialog
192 FGEventMgr global_events;
194 // This is a record containing a bit of global housekeeping information
197 // Specify our current idle function state. This is used to run all
198 // our initializations out of the glutIdleLoop() so that we can get a
199 // splash screen up and running right away.
200 static int idle_state = 0;
201 static long global_multi_loop;
203 // fog constants. I'm a little nervous about putting actual code out
204 // here but it seems to work (?)
205 static const double m_log01 = -log( 0.01 );
206 static const double sqrt_m_log01 = sqrt( m_log01 );
207 static GLfloat fog_exp_density;
208 static GLfloat fog_exp2_density;
209 static GLfloat rwy_exp2_punch_through;
210 static GLfloat taxi_exp2_punch_through;
211 static GLfloat ground_exp2_punch_through;
213 #ifdef FG_NETWORK_OLK
214 ssgSelector *fgd_sel = NULL;
215 ssgTransform *fgd_pos = NULL;
221 #ifdef FG_USE_CLOUDS_3D
222 SkySceneLoader *sgClouds3d;
223 bool _bcloud_orig = true;
227 sgMat4 copy_of_ssgOpenGLAxisSwapMatrix =
229 { 1.0f, 0.0f, 0.0f, 0.0f },
230 { 0.0f, 0.0f, -1.0f, 0.0f },
231 { 0.0f, 1.0f, 0.0f, 0.0f },
232 { 0.0f, 0.0f, 0.0f, 1.0f }
235 // The following defines flightgear options. Because glutlib will also
236 // want to parse its own options, those options must not be included here
237 // or they will get parsed by the main program option parser. Hence case
238 // is significant for any option added that might be in conflict with
241 // glutlib parses for:
243 // -direct (invalid in Win32)
247 // -indirect (invalid in Win32)
250 // Note that glutlib depends upon strings while this program's
251 // option parser wants only initial characters followed by numbers
256 ssgSimpleState *cloud3d_imposter_state;
257 ssgSimpleState *default_state;
258 ssgSimpleState *hud_and_panel;
259 ssgSimpleState *menus;
261 SGTimeStamp last_time_stamp;
262 SGTimeStamp current_time_stamp;
265 void fgBuildRenderStates( void ) {
266 default_state = new ssgSimpleState;
267 default_state->ref();
268 default_state->disable( GL_TEXTURE_2D );
269 default_state->enable( GL_CULL_FACE );
270 default_state->enable( GL_COLOR_MATERIAL );
271 default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
272 default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
273 default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
274 default_state->disable( GL_BLEND );
275 default_state->disable( GL_ALPHA_TEST );
276 default_state->disable( GL_LIGHTING );
278 cloud3d_imposter_state = new ssgSimpleState;
279 cloud3d_imposter_state->ref();
280 cloud3d_imposter_state->enable( GL_TEXTURE_2D );
281 cloud3d_imposter_state->enable( GL_CULL_FACE );
282 cloud3d_imposter_state->enable( GL_COLOR_MATERIAL );
283 cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
284 cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 );
285 cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 );
286 cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
287 cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
288 cloud3d_imposter_state->enable( GL_BLEND );
289 cloud3d_imposter_state->enable( GL_ALPHA_TEST );
290 cloud3d_imposter_state->disable( GL_LIGHTING );
292 hud_and_panel = new ssgSimpleState;
293 hud_and_panel->ref();
294 hud_and_panel->disable( GL_CULL_FACE );
295 hud_and_panel->disable( GL_TEXTURE_2D );
296 hud_and_panel->disable( GL_LIGHTING );
297 hud_and_panel->enable( GL_BLEND );
299 menus = new ssgSimpleState;
301 menus->disable( GL_CULL_FACE );
302 menus->disable( GL_TEXTURE_2D );
303 menus->enable( GL_BLEND );
307 // fgInitVisuals() -- Initialize various GL/view parameters
308 void fgInitVisuals( void ) {
311 l = &cur_light_params;
313 #ifndef GLUT_WRONG_VERSION
314 // Go full screen if requested ...
315 if ( fgGetBool("/sim/startup/fullscreen") ) {
320 // If enabled, normal vectors specified with glNormal are scaled
321 // to unit length after transformation. Enabling this has
322 // performance implications. See the docs for glNormal.
323 // glEnable( GL_NORMALIZE );
325 glEnable( GL_LIGHTING );
326 glEnable( GL_LIGHT0 );
327 // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec ); // done later with ssg
330 sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
331 ssgGetLight( 0 ) -> setPosition( sunpos );
333 glFogi (GL_FOG_MODE, GL_EXP2);
334 if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
335 (!fgGetBool("/sim/rendering/shading"))) {
336 // if fastest fog requested, or if flat shading force fastest
337 glHint ( GL_FOG_HINT, GL_FASTEST );
338 } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
339 glHint ( GL_FOG_HINT, GL_NICEST );
341 if ( fgGetBool("/sim/rendering/wireframe") ) {
343 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
346 // This is the default anyways, but it can't hurt
347 glFrontFace ( GL_CCW );
350 // glEnable(GL_POINT_SMOOTH);
351 // glEnable(GL_LINE_SMOOTH);
352 // glEnable(GL_POLYGON_SMOOTH);
356 // For HiRes screen Dumps using Brian Pauls TR Library
357 void trRenderFrame( void ) {
359 if ( fgPanelVisible() ) {
360 GLfloat height = fgGetInt("/sim/startup/ysize");
362 (globals->get_current_panel()->getViewHeight() - globals->get_current_panel()->getYOffset())
363 * (height / 768.0) + 1;
364 glTranslatef( 0.0, view_h, 0.0 );
367 static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
368 static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
370 fgLIGHT *l = &cur_light_params;
372 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
373 l->adj_fog_color[2], l->adj_fog_color[3]);
375 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
377 // set the opengl state to known default values
378 default_state->force();
381 glFogf ( GL_FOG_DENSITY, fog_exp2_density);
382 glFogi ( GL_FOG_MODE, GL_EXP2 );
383 glFogfv ( GL_FOG_COLOR, l->adj_fog_color );
385 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
386 // we only update GL_AMBIENT for our lights we will never get
387 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
388 // explicitely to black.
389 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
390 glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE );
392 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
394 // texture parameters
395 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
396 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
398 // we need a white diffuse light for the phase of the moon
399 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
402 // draw the ssg scene
403 // return to the desired diffuse color
404 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
405 glEnable( GL_DEPTH_TEST );
406 ssgSetNearFar( scene_nearplane, scene_farplane );
407 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
410 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
411 ssgSetNearFar( scene_nearplane, scene_farplane );
412 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
414 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
416 if (fgGetBool("/environment/clouds/status"))
417 thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER );
419 globals->get_model_mgr()->draw();
420 globals->get_aircraft_model()->draw();
424 // Update all Visuals (redraws anything graphics related)
425 void fgRenderFrame() {
426 bool draw_otw = fgGetBool("/sim/rendering/draw-otw");
427 bool skyblend = fgGetBool("/sim/rendering/skyblend");
428 bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
429 bool distance_attenuation = fgGetBool("/sim/rendering/distance-attenuation");
431 GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
432 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
434 // Process/manage pending events
435 global_events.update( delta_time_sec );
437 // static const SGPropertyNode *longitude
438 // = fgGetNode("/position/longitude-deg");
439 // static const SGPropertyNode *latitude
440 // = fgGetNode("/position/latitude-deg");
441 // static const SGPropertyNode *altitude
442 // = fgGetNode("/position/altitude-ft");
443 static const SGPropertyNode *groundlevel_nearplane
444 = fgGetNode("/sim/current-view/ground-level-nearplane-m");
446 // Update the default (kludged) properties.
449 FGViewer *current__view = globals->get_current_view();
451 fgLIGHT *l = &cur_light_params;
452 static double last_visibility = -9999;
455 double actual_visibility;
456 if (fgGetBool("/environment/clouds/status"))
457 actual_visibility = thesky->get_visibility();
459 actual_visibility = fgGetDouble("/environment/visibility-m");
460 if ( actual_visibility != last_visibility ) {
461 last_visibility = actual_visibility;
463 fog_exp_density = m_log01 / actual_visibility;
464 fog_exp2_density = sqrt_m_log01 / actual_visibility;
465 ground_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
466 if ( actual_visibility < 8000 ) {
467 rwy_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 2.5);
468 taxi_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
470 rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 );
471 taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 );
476 // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
477 // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
478 // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
479 // GLfloat mat_shininess[] = { 10.0 };
480 GLbitfield clear_mask;
482 if ( idle_state != 1000 ) {
483 // still initializing, draw the splash screen
484 if ( fgGetBool("/sim/startup/splash-screen") ) {
485 fgSplashUpdate(0.0, 1.0);
487 // Keep resetting sim time while the sim is initializing
488 globals->set_sim_time_sec( 0.0 );
489 SGAnimation::set_sim_time_sec( 0.0 );
491 // idle_state is now 1000 meaning we've finished all our
492 // initializations and are running the main loop, so this will
493 // now work without seg faulting the system.
495 // calculate our current position in cartesian space
496 globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() );
499 fgReshape( fgGetInt("/sim/startup/xsize"),
500 fgGetInt("/sim/startup/ysize") );
502 if ( fgGetBool("/sim/rendering/clouds3d") ) {
503 glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
504 cloud3d_imposter_state->force();
506 glColor4f( 1.0, 1.0, 1.0, 1.0 );
507 glEnable(GL_DEPTH_TEST);
509 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
511 #ifdef FG_USE_CLOUDS_3D
512 if ( _bcloud_orig ) {
513 Point3D c = globals->get_scenery()->get_center();
514 sgClouds3d->Set_Cloud_Orig( &c );
515 _bcloud_orig = false;
517 sgClouds3d->Update( current__view->get_absolute_view_pos() );
519 glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
520 glDisable(GL_DEPTH_TEST);
523 clear_mask = GL_DEPTH_BUFFER_BIT;
524 if ( fgGetBool("/sim/rendering/wireframe") ) {
525 clear_mask |= GL_COLOR_BUFFER_BIT;
529 if ( fgGetBool("/sim/rendering/textures") ) {
530 // glClearColor(black[0], black[1], black[2], black[3]);
531 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
532 l->adj_fog_color[2], l->adj_fog_color[3]);
533 clear_mask |= GL_COLOR_BUFFER_BIT;
536 glClearColor(l->sky_color[0], l->sky_color[1],
537 l->sky_color[2], l->sky_color[3]);
538 clear_mask |= GL_COLOR_BUFFER_BIT;
540 glClear( clear_mask );
542 // Tell GL we are switching to model view parameters
544 // I really should create a derived ssg node or use a call
545 // back or something so that I can draw the sky within the
546 // ssgCullAndDraw() function, but for now I just mimic what
547 // ssg does to set up the model view matrix
548 glMatrixMode(GL_MODELVIEW);
550 ssgSetCamera( (sgVec4 *)current__view->get_VIEW() );
552 // set the opengl state to known default values
553 default_state->force();
555 // update fog params if visibility has changed
556 double visibility_meters = fgGetDouble("/environment/visibility-m");
557 thesky->set_visibility(visibility_meters);
559 thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
560 ( global_multi_loop * fgGetInt("/sim/speed-up") )
561 / (double)fgGetInt("/sim/model-hz") );
563 // Set correct opengl fog density
564 glFogf (GL_FOG_DENSITY, fog_exp2_density);
566 // update the sky dome
569 SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
570 << cur_light_params.sky_color[0] << " "
571 << cur_light_params.sky_color[1] << " "
572 << cur_light_params.sky_color[2] << " "
573 << cur_light_params.sky_color[3] );
574 SG_LOG( SG_GENERAL, SG_BULK, " fog = "
575 << cur_light_params.fog_color[0] << " "
576 << cur_light_params.fog_color[1] << " "
577 << cur_light_params.fog_color[2] << " "
578 << cur_light_params.fog_color[3] );
579 SG_LOG( SG_GENERAL, SG_BULK,
580 " sun_angle = " << cur_light_params.sun_angle
581 << " moon_angle = " << cur_light_params.moon_angle );
584 static SGSkyColor scolor;
586 scolor.sky_color = cur_light_params.sky_color;
587 scolor.fog_color = cur_light_params.adj_fog_color;
588 scolor.cloud_color = cur_light_params.cloud_color;
589 scolor.sun_angle = cur_light_params.sun_angle;
590 scolor.moon_angle = cur_light_params.moon_angle;
591 scolor.nplanets = globals->get_ephem()->getNumPlanets();
592 scolor.nstars = globals->get_ephem()->getNumStars();
593 scolor.planet_data = globals->get_ephem()->getPlanets();
594 scolor.star_data = globals->get_ephem()->getStars();
596 thesky->repaint( scolor );
599 SG_LOG( SG_GENERAL, SG_BULK,
600 "thesky->reposition( view_pos = " << view_pos[0] << " "
601 << view_pos[1] << " " << view_pos[2] );
602 SG_LOG( SG_GENERAL, SG_BULK,
603 " zero_elev = " << zero_elev[0] << " "
604 << zero_elev[1] << " " << zero_elev[2]
605 << " lon = " << cur_fdm_state->get_Longitude()
606 << " lat = " << cur_fdm_state->get_Latitude() );
607 SG_LOG( SG_GENERAL, SG_BULK,
608 " sun_rot = " << cur_light_params.sun_rotation
609 << " gst = " << SGTime::cur_time_params->getGst() );
610 SG_LOG( SG_GENERAL, SG_BULK,
611 " sun ra = " << globals->get_ephem()->getSunRightAscension()
612 << " sun dec = " << globals->get_ephem()->getSunDeclination()
613 << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
614 << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
617 // The sun and moon distances are scaled down versions
618 // of the actual distance to get both the moon and the sun
619 // within the range of the far clip plane.
620 // Moon distance: 384,467 kilometers
621 // Sun distance: 150,000,000 kilometers
622 double sun_horiz_eff, moon_horiz_eff;
623 if (fgGetBool("/sim/rendering/horizon-effect")) {
624 sun_horiz_eff = 0.67+pow(0.5+cos(cur_light_params.sun_angle*2)/2,0.33)/3;
625 moon_horiz_eff = 0.67+pow(0.5+cos(cur_light_params.moon_angle*2)/2,0.33)/3;
627 sun_horiz_eff = moon_horiz_eff = 1.0;
630 static SGSkyState sstate;
632 sstate.view_pos = current__view->get_view_pos();
633 sstate.zero_elev = current__view->get_zero_elev();
634 sstate.view_up = current__view->get_world_up();
635 sstate.lon = current__view->getLongitude_deg()
636 * SGD_DEGREES_TO_RADIANS;
637 sstate.lat = current__view->getLatitude_deg()
638 * SGD_DEGREES_TO_RADIANS;
639 sstate.alt = current__view->getAltitudeASL_ft()
641 sstate.spin = cur_light_params.sun_rotation;
642 sstate.gst = globals->get_time_params()->getGst();
643 sstate.sun_ra = globals->get_ephem()->getSunRightAscension();
644 sstate.sun_dec = globals->get_ephem()->getSunDeclination();
645 sstate.sun_dist = 50000.0 * sun_horiz_eff;
646 sstate.moon_ra = globals->get_ephem()->getMoonRightAscension();
647 sstate.moon_dec = globals->get_ephem()->getMoonDeclination();
648 sstate.moon_dist = 40000.0 * moon_horiz_eff;
650 thesky->reposition( sstate, delta_time_sec );
653 glEnable( GL_DEPTH_TEST );
654 if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
656 glFogi( GL_FOG_MODE, GL_EXP2 );
657 glFogfv( GL_FOG_COLOR, l->adj_fog_color );
660 // set sun/lighting parameters
661 ssgGetLight( 0 ) -> setPosition( l->sun_vec );
663 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
664 // we only update GL_AMBIENT for our lights we will never get
665 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
666 // explicitely to black.
667 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
669 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
670 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
671 ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular );
673 // texture parameters
674 // glEnable( GL_TEXTURE_2D );
675 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
676 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
678 // glMatrixMode( GL_PROJECTION );
680 ssgSetFOV( current__view->get_h_fov(),
681 current__view->get_v_fov() );
684 current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
685 - globals->get_scenery()->get_cur_elev();
688 scene_nearplane = 10.0f;
689 scene_farplane = 120000.0f;
691 scene_nearplane = groundlevel_nearplane->getDoubleValue();
692 scene_farplane = 120000.0f;
695 ssgSetNearFar( scene_nearplane, scene_farplane );
697 // $$$ begin - added VS Renganthan 17 Oct 2K
700 // $$$ end - added VS Renganthan 17 Oct 2K
702 # ifdef FG_NETWORK_OLK
703 if ( fgGetBool("/sim/networking/network-olk") ) {
705 other = head->next; /* put listpointer to start */
706 while ( other != tail) { /* display all except myself */
707 if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) {
708 other->fgd_sel->select(1);
709 sgSetCoord( &fgdpos, other->sgFGD_COORD );
710 other->fgd_pos->setTransform( &fgdpos );
715 // fgd_sel->select(1);
716 // sgCopyMat4( sgTUX, current_view.sgVIEW);
718 // sgSetCoord( &fgdpos, sgFGD_VIEW );
719 // fgd_pos->setTransform( &fgdpos);
724 // Update any multiplayer models
725 globals->get_multiplayer_rx_mgr()->Update();
728 if ( draw_otw && skyblend )
730 // draw the sky backdrop
732 // we need a white diffuse light for the phase of the moon
733 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
737 // return to the desired diffuse color
738 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
740 // FIXME: This should not be needed, but at this time (08/15/2003)
741 // certain NVidia drivers don't seem to implement
742 // fgPushAttrib(FG_FOG_BIT) properly. The result is that
743 // there is not fog when looking at the sun.
744 glFogf ( GL_FOG_DENSITY, fog_exp2_density );
747 // draw the ssg scene
748 glEnable( GL_DEPTH_TEST );
750 ssgSetNearFar( scene_nearplane, scene_farplane );
752 if ( fgGetBool("/sim/rendering/wireframe") ) {
754 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
757 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
760 // This is a bit kludgy. Every 200 frames, do an extra
761 // traversal of the scene graph without drawing anything, but
762 // with the field-of-view set to 360x360 degrees. This
763 // ensures that out-of-range random objects that are not in
764 // the current view frustum will still be freed properly.
765 static int counter = 0;
767 if (counter == 200) {
770 // No need to put the near plane too close;
771 // this way, at least the aircraft can be
773 f.setNearFar(1000, 1000000);
775 ssgGetModelviewMatrix(m);
776 globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
780 // change state for lighting here
782 // draw runway lighting
783 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
784 ssgSetNearFar( scene_nearplane, scene_farplane );
786 if ( enhanced_lighting ) {
788 // Enable states for drawing points with GL_extension
789 glEnable(GL_POINT_SMOOTH);
791 if ( distance_attenuation && glPointParameterIsSupported )
793 // Enable states for drawing points with GL_extension
794 glEnable(GL_POINT_SMOOTH);
796 float quadratic[3] = {1.0, 0.001, 0.0000001};
797 // makes the points fade as they move away
798 glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT, quadratic);
799 glPointParameterfPtr(GL_POINT_SIZE_MIN_EXT, 1.0);
804 // blending function for runway lights
805 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
808 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
809 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
810 glEnable(GL_TEXTURE_GEN_S);
811 glEnable(GL_TEXTURE_GEN_T);
812 glPolygonMode(GL_FRONT, GL_POINT);
814 // draw runway lighting
816 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
819 // change punch through and then draw taxi lighting
820 glFogf ( GL_FOG_DENSITY, fog_exp2_density );
822 // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
823 // glFogfv ( GL_FOG_COLOR, taxi_fog );
825 ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
829 glPolygonMode(GL_FRONT, GL_FILL);
830 glDisable(GL_TEXTURE_GEN_S);
831 glDisable(GL_TEXTURE_GEN_T);
833 //static int _frame_count = 0;
834 //if (_frame_count % 30 == 0) {
835 // printf("SSG: %s\n", ssgShowStats());
843 if ( enhanced_lighting ) {
844 if ( distance_attenuation && glPointParameterIsSupported )
846 glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT,
847 default_attenuation);
851 glDisable(GL_POINT_SMOOTH);
854 // draw ground lighting
855 glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
857 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
861 // draw the sky cloud layers
862 if ( draw_otw && fgGetBool("/environment/clouds/status") )
864 thesky->postDraw( cur_fdm_state->get_Altitude()
865 * SG_FEET_TO_METER );
869 if ( draw_otw && fgGetBool("/sim/rendering/clouds3d") )
872 glDisable( GL_LIGHTING );
873 // cout << "drawing new clouds" << endl;
875 glEnable(GL_DEPTH_TEST);
877 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
880 glEnable( GL_TEXTURE_2D );
881 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
882 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
883 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
884 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
887 #ifdef FG_USE_CLOUDS_3D
888 sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
891 glEnable( GL_LIGHTING );
892 glEnable( GL_DEPTH_TEST );
893 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
897 globals->get_model_mgr()->draw();
898 globals->get_aircraft_model()->draw();
901 // display HUD && Panel
903 glDisable( GL_DEPTH_TEST );
904 // glDisable( GL_CULL_FACE );
905 // glDisable( GL_TEXTURE_2D );
907 // update the controls subsystem
908 globals->get_controls()->update(delta_time_sec);
910 hud_and_panel->apply();
913 // Use the hud_and_panel ssgSimpleState for rendering the ATC output
914 // This only works properly if called before the panel call
915 if((fgGetBool("/sim/ATC/enabled")) || (fgGetBool("/sim/ai-traffic/enabled")))
916 globals->get_ATC_display()->update(delta_time_sec);
918 // update the panel subsystem
919 if ( globals->get_current_panel() != NULL ) {
920 globals->get_current_panel()->update(delta_time_sec);
924 // We can do translucent menus, so why not. :-)
926 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
928 // glDisable ( GL_BLEND ) ;
930 glEnable( GL_DEPTH_TEST );
933 // Fade out the splash screen over the first three seconds.
934 double t = globals->get_sim_time_sec();
936 fgSplashUpdate(0.0, 1.0);
937 } else if ( t <= 3.0) {
938 fgSplashUpdate(0.0, (3.0 - t) / 2.0);
946 // Update internal time dependent calculations (i.e. flight model)
947 // FIXME: this distinction is obsolete; all subsystems now get delta
949 void fgUpdateTimeDepCalcs() {
950 static bool inited = false;
952 static const SGPropertyNode *replay_master
953 = fgGetNode( "/sim/freeze/replay", true );
954 static SGPropertyNode *replay_time
955 = fgGetNode( "/sim/replay/time", true );
956 static const SGPropertyNode *replay_end_time
957 = fgGetNode( "/sim/replay/end-time", true );
959 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
961 fgLIGHT *l = &cur_light_params;
963 // Initialize the FDM here if it hasn't been and if we have a
964 // scenery elevation hit.
966 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
967 // << " cur_elev = " << scenery.get_cur_elev() << endl;
969 if ( !cur_fdm_state->get_inited() &&
970 globals->get_scenery()->get_cur_elev() > -9990 )
972 SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");
973 cur_fdm_state->init();
974 if ( cur_fdm_state->get_bound() ) {
975 cur_fdm_state->unbind();
977 cur_fdm_state->bind();
980 // conceptually, the following block could be done for each fdm
982 if ( cur_fdm_state->get_inited() ) {
983 // we have been inited, and we are good to go ...
989 if ( ! replay_master->getBoolValue() ) {
990 globals->get_autopilot()->update( delta_time_sec );
991 cur_fdm_state->update( delta_time_sec );
993 FGReplay *r = (FGReplay *)(globals->get_subsystem( "replay" ));
994 r->replay( replay_time->getDoubleValue() );
995 replay_time->setDoubleValue( replay_time->getDoubleValue()
997 * fgGetInt("/sim/speed-up") ) );
1000 // do nothing, fdm isn't inited yet
1003 globals->get_model_mgr()->update(delta_time_sec);
1004 globals->get_aircraft_model()->update(delta_time_sec);
1006 // update the view angle
1007 globals->get_viewmgr()->update(delta_time_sec);
1011 // Update solar system
1012 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
1013 globals->get_time_params()->getLst(),
1014 cur_fdm_state->get_Latitude() );
1016 // Update radio stack model
1017 current_radiostack->update(delta_time_sec);
1021 void fgInitTimeDepCalcs( void ) {
1026 static const double alt_adjust_ft = 3.758099;
1027 static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
1030 // What should we do when we have nothing else to do? Let's get ready
1031 // for the next move and update the display?
1032 static void fgMainLoop( void ) {
1033 int model_hz = fgGetInt("/sim/model-hz");
1035 static const SGPropertyNode *longitude
1036 = fgGetNode("/position/longitude-deg");
1037 static const SGPropertyNode *latitude
1038 = fgGetNode("/position/latitude-deg");
1039 static const SGPropertyNode *altitude
1040 = fgGetNode("/position/altitude-ft");
1041 static const SGPropertyNode *clock_freeze
1042 = fgGetNode("/sim/freeze/clock", true);
1043 static const SGPropertyNode *cur_time_override
1044 = fgGetNode("/sim/time/cur-time-override", true);
1045 static const SGPropertyNode *replay_master
1046 = fgGetNode("/sim/freeze/replay", true);
1048 // Update the elapsed time.
1049 static bool first_time = true;
1051 last_time_stamp.stamp();
1055 double throttle_hz = fgGetDouble("/sim/frame-rate-throttle-hz", 0.0);
1056 if ( throttle_hz > 0.0 ) {
1057 // simple frame rate throttle
1058 double dt = 1000000.0 / throttle_hz;
1059 current_time_stamp.stamp();
1060 while ( current_time_stamp - last_time_stamp < dt ) {
1061 current_time_stamp.stamp();
1064 // run as fast as the app will go
1065 current_time_stamp.stamp();
1068 delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0;
1069 if ( clock_freeze->getBoolValue() ) {
1072 last_time_stamp = current_time_stamp;
1073 globals->inc_sim_time_sec( delta_time_sec );
1074 SGAnimation::set_sim_time_sec( globals->get_sim_time_sec() );
1076 static long remainder = 0;
1078 #ifdef FANCY_FRAME_COUNTER
1082 static time_t last_time = 0;
1083 static int frames = 0;
1084 #endif // FANCY_FRAME_COUNTER
1086 SGTime *t = globals->get_time_params();
1088 sglog().setLogLevels( SG_ALL, (sgDebugPriority)fgGetInt("/sim/log-level") );
1089 sglog().setLogLevels( SG_ALL, SG_INFO );
1091 SGLocation * acmodel_location = 0;
1092 if(cur_fdm_state->getACModel() != 0) {
1093 acmodel_location = (SGLocation *) cur_fdm_state->getACModel()->get3DModel()->getSGLocation();
1096 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
1097 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
1099 #ifdef FG_NETWORK_OLK
1100 if ( fgGetBool("/sim/networking/network-olk") ) {
1101 if ( net_is_registered == 0 ) { // We first have to reg. to fgd
1102 // printf("FGD: Netupdate\n");
1103 fgd_send_com( "A", FGFS_host); // Send Mat4 data
1104 fgd_send_com( "B", FGFS_host); // Recv Mat4 data
1109 #if defined( ENABLE_PLIB_JOYSTICK )
1110 // Read joystick and update control settings
1111 // if ( fgGetString("/sim/control-mode") == "joystick" )
1113 // fgJoystickRead();
1115 #elif defined( ENABLE_GLUT_JOYSTICK )
1116 // Glut joystick support works by feeding a joystick handler
1117 // function to glut. This is taken care of once in the joystick
1118 // init routine and we don't have to worry about it again.
1121 // Fix elevation. I'm just sticking this here for now, it should
1122 // probably move eventually
1124 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
1125 scenery.get_cur_elev(),
1126 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1127 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1130 // This code is used by LaRCsim/UIUC to position the aircraft at a proper
1131 // place. This code should eventually go into the LaRCsim directory.
1132 // Commented out at Jul 27 2003 because tests show it is not needed.
1133 // Can probbaly be safely removed after Spet. 2003 - EMH
1135 if ( acmodel_location != 0 ) {
1136 if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) {
1137 if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER <
1138 (acmodel_location->get_cur_elev_m() + alt_adjust_m - 130.0) ) {
1139 // now set aircraft altitude above ground
1140 printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n",
1141 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
1142 acmodel_location->get_cur_elev_m() + alt_adjust_m - 130.0,
1143 acmodel_location->get_cur_elev_m() + alt_adjust_m );
1144 cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m()
1145 + alt_adjust_m) * SG_METER_TO_FEET );
1146 SG_LOG( SG_ALL, SG_DEBUG,
1147 "<*> resetting altitude to "
1148 << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER
1153 // End of code in question. (see Curt is this code used? above)
1156 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
1157 scenery.get_cur_elev(),
1158 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1159 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1161 // cout << "Warp = " << globals->get_warp() << endl;
1164 static bool last_clock_freeze = false;
1166 if ( clock_freeze->getBoolValue() ) {
1167 // clock freeze requested
1168 if ( cur_time_override->getLongValue() == 0 ) {
1169 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
1170 globals->set_warp( 0 );
1173 // no clock freeze requested
1174 if ( last_clock_freeze == true ) {
1175 // clock just unfroze, let's set warp as the difference
1176 // between frozen time and current time so we don't get a
1177 // time jump (and corresponding sky object and lighting
1179 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
1180 fgSetLong( "/sim/time/cur-time-override", 0 );
1182 if ( globals->get_warp_delta() != 0 ) {
1183 globals->inc_warp( globals->get_warp_delta() );
1187 last_clock_freeze = clock_freeze->getBoolValue();
1189 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1190 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1191 cur_time_override->getLongValue(),
1192 globals->get_warp() );
1194 if ( globals->get_warp_delta() != 0 ) {
1195 fgUpdateSkyAndLightingParams();
1198 // update magvar model
1199 globals->get_mag()->update( longitude->getDoubleValue()
1200 * SGD_DEGREES_TO_RADIANS,
1201 latitude->getDoubleValue()
1202 * SGD_DEGREES_TO_RADIANS,
1203 altitude->getDoubleValue() * SG_FEET_TO_METER,
1204 globals->get_time_params()->getJD() );
1206 // Get elapsed time (in usec) for this past frame
1207 elapsed = fgGetTimeInterval();
1208 SG_LOG( SG_ALL, SG_DEBUG,
1209 "Elapsed time interval is = " << elapsed
1210 << ", previous remainder is = " << remainder );
1212 // Calculate frame rate average
1213 #ifdef FANCY_FRAME_COUNTER
1214 /* old fps calculation */
1215 if ( elapsed > 0 ) {
1218 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
1219 tmp = general.get_frame(i);
1221 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
1222 general.set_frame(i+1,tmp);
1224 tmp = 1000000.0 / (float)elapsed;
1225 general.set_frame(0,tmp);
1226 // printf("frame[0] = %.2f\n", general.frames[0]);
1228 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
1229 // printf("ave = %.2f\n", general.frame_rate);
1232 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
1233 general.set_frame_rate( frames );
1234 fgSetInt("/sim/frame-rate", frames);
1235 SG_LOG( SG_ALL, SG_DEBUG,
1236 "--> Frame rate is = " << general.get_frame_rate() );
1239 last_time = t->get_cur_time();
1243 // Run ATC subsystem
1244 if (fgGetBool("/sim/ATC/enabled"))
1245 globals->get_ATC_mgr()->update(delta_time_sec);
1247 // Run the AI subsystem
1248 if (fgGetBool("/sim/ai-traffic/enabled"))
1249 globals->get_AI_mgr()->update(delta_time_sec);
1253 // Calculate model iterations needed for next frame
1254 elapsed += remainder;
1256 global_multi_loop = (long)(((double)elapsed * 0.000001) * model_hz );
1257 remainder = elapsed - ( (global_multi_loop*1000000) / model_hz );
1258 SG_LOG( SG_ALL, SG_DEBUG,
1259 "Model iterations needed = " << global_multi_loop
1260 << ", new remainder = " << remainder );
1262 // chop max interations to something reasonable if the sim was
1263 // delayed for an excesive amount of time
1264 if ( global_multi_loop > 2.0 * model_hz ) {
1265 global_multi_loop = (int)(2.0 * model_hz );
1270 if ( global_multi_loop > 0 ) {
1271 fgUpdateTimeDepCalcs();
1273 SG_LOG( SG_ALL, SG_DEBUG,
1274 "Elapsed time is zero ... we're zinging" );
1277 // Do any I/O channel work that might need to be done
1278 globals->get_io()->update( delta_time_sec );
1280 // see if we need to load any deferred-load textures
1281 globals->get_matlib()->load_next_deferred();
1283 // Run audio scheduler
1284 #ifdef ENABLE_AUDIO_SUPPORT
1285 if ( fgGetBool("/sim/sound/audible")
1286 && globals->get_soundmgr()->is_working() ) {
1287 globals->get_soundmgr()->update( delta_time_sec );
1291 globals->get_subsystem_mgr()->update(delta_time_sec);
1294 // Tile Manager updates - see if we need to load any new scenery tiles.
1295 // this code ties together the fdm, viewer and scenery classes...
1296 // we may want to move this to it's own class at some point
1298 double visibility_meters = fgGetDouble("/environment/visibility-m");
1299 FGViewer *current_view = globals->get_current_view();
1301 // update tile manager for FDM...
1302 // ...only if location is different than the viewer (to avoid duplicating effort)
1303 if( acmodel_location != current_view->getSGLocation() ) {
1304 if( acmodel_location != 0 ) {
1305 globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location,
1306 visibility_meters );
1307 globals->get_tile_mgr()->
1308 update( acmodel_location, visibility_meters,
1309 acmodel_location->get_absolute_view_pos(globals->get_scenery()->get_center()) );
1310 // save results of update in SGLocation for fdm...
1311 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1313 set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1316 set_tile_center( globals->get_scenery()->get_next_center() );
1320 globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(),
1321 visibility_meters );
1322 // update tile manager for view...
1323 // IMPORTANT!!! the tilemgr update for view location _must_ be done last
1324 // after the FDM's until all of Flight Gear code references the viewer's location
1325 // for elevation instead of the "scenery's" current elevation.
1326 SGLocation *view_location = globals->get_current_view()->getSGLocation();
1327 globals->get_tile_mgr()->update( view_location, visibility_meters,
1328 current_view->get_absolute_view_pos() );
1329 // save results of update in SGLocation for fdm...
1330 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1331 current_view->getSGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1333 current_view->getSGLocation()->set_tile_center( globals->get_scenery()->get_next_center() );
1335 // If fdm location is same as viewer's then we didn't do the update for fdm location
1336 // above so we need to save the viewer results in the fdm SGLocation as well...
1337 if( acmodel_location == current_view->getSGLocation() ) {
1338 if( acmodel_location != 0 ) {
1339 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1340 acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1342 acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
1346 // END Tile Manager udpates
1351 SG_LOG( SG_ALL, SG_DEBUG, "" );
1355 // This is the top level master main function that is registered as
1356 // our idle funciton
1358 // The first few passes take care of initialization things (a couple
1359 // per pass) and once everything has been initialized fgMainLoop from
1362 static void fgIdleFunction ( void ) {
1363 // printf("idle state == %d\n", idle_state);
1365 if ( idle_state == 0 ) {
1366 // Initialize the splash screen right away
1367 if ( fgGetBool("/sim/startup/splash-screen") ) {
1372 } else if ( idle_state == 1 ) {
1373 // Initialize audio support
1374 #ifdef ENABLE_AUDIO_SUPPORT
1376 // Start the intro music
1377 if ( fgGetBool("/sim/startup/intro-music") ) {
1378 SGPath mp3file( globals->get_fg_root() );
1379 mp3file.append( "Sounds/intro.mp3" );
1381 SG_LOG( SG_GENERAL, SG_INFO,
1382 "Starting intro music: " << mp3file.str() );
1384 #if defined( __CYGWIN__ )
1385 string command = "start /m `cygpath -w " + mp3file.str() + "`";
1386 #elif defined( WIN32 )
1387 string command = "start /m " + mp3file.str();
1389 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
1392 system ( command.c_str() );
1397 } else if ( idle_state == 2 ) {
1398 // These are a few miscellaneous things that aren't really
1399 // "subsystems" but still need to be initialized.
1402 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
1403 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
1408 } else if ( idle_state == 3 ) {
1409 // This is the top level init routine which calls all the
1410 // other subsystem initialization routines. If you are adding
1411 // a subsystem to flightgear, its initialization call should
1412 // located in this routine.
1413 if( !fgInitSubsystems()) {
1414 SG_LOG( SG_GENERAL, SG_ALERT,
1415 "Subsystem initializations failed ..." );
1420 } else if ( idle_state == 4 ) {
1421 // setup OpenGL view parameters
1424 // Read the list of available aircrafts
1428 } else if ( idle_state == 5 ) {
1431 } else if ( idle_state == 6 ) {
1435 SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
1436 fgReshape( fgGetInt("/sim/startup/xsize"),
1437 fgGetInt("/sim/startup/ysize") );
1440 if ( idle_state == 1000 ) {
1441 // We've finished all our initialization steps, from now on we
1442 // run the main loop.
1444 glutIdleFunc(fgMainLoop);
1446 if ( fgGetBool("/sim/startup/splash-screen") ) {
1447 fgSplashUpdate(0.0, 1.0);
1452 // options.cxx needs to see this for toggle_panel()
1453 // Handle new window size or exposure
1454 void fgReshape( int width, int height ) {
1457 if ( (!fgGetBool("/sim/virtual-cockpit"))
1458 && fgPanelVisible() && idle_state == 1000 ) {
1459 view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
1460 globals->get_current_panel()->getYOffset()) / 768.0);
1466 FGViewMgr *viewmgr = globals->get_viewmgr();
1467 for ( int i = 0; i < viewmgr->size(); ++i ) {
1468 viewmgr->get_view(i)->
1469 set_aspect_ratio((float)view_h / (float)width);
1472 glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) );
1474 fgSetInt("/sim/startup/xsize", width);
1475 fgSetInt("/sim/startup/ysize", height);
1476 guiInitMouse(width, height);
1478 ssgSetFOV( viewmgr->get_current_view()->get_h_fov(),
1479 viewmgr->get_current_view()->get_v_fov() );
1483 #ifdef FG_USE_CLOUDS_3D
1484 sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(),
1485 viewmgr->get_current_view()->get_v_fov() );
1490 // Initialize GLUT and define a main window
1491 static bool fgGlutInit( int *argc, char **argv ) {
1493 #if !defined( macintosh )
1494 // GLUT will extract all glut specific options so later on we only
1495 // need wory about our own.
1496 glutInit(argc, argv);
1499 // Define Display Parameters. Clouds3d works best with --bpp32 option
1500 if ( fgGetBool("/sim/rendering/clouds3d") ) {
1501 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_ALPHA );
1503 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
1506 SG_LOG( SG_GENERAL, SG_INFO, "Opening a window: " <<
1507 fgGetInt("/sim/startup/xsize") << "x"
1508 << fgGetInt("/sim/startup/ysize") );
1510 // Define initial window size
1511 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1512 fgGetInt("/sim/startup/ysize") );
1514 // Initialize windows
1515 if ( !fgGetBool("/sim/startup/game-mode")) {
1516 // Open the regular window
1517 glutCreateWindow("FlightGear");
1518 #ifndef GLUT_WRONG_VERSION
1520 // Open the cool new 'game mode' window
1521 char game_mode_str[256];
1522 //#define SYNC_OPENGL_WITH_DESKTOP_SETTINGS
1523 #if defined(WIN32) && defined(SYNC_OPENGL_WITH_DESKTOP_SETTINGS)
1524 #ifndef ENUM_CURRENT_SETTINGS
1525 #define ENUM_CURRENT_SETTINGS ((DWORD)-1)
1526 #define ENUM_REGISTRY_SETTINGS ((DWORD)-2)
1530 dm.dmSize = sizeof(DEVMODE);
1531 EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
1532 fgSetInt("/sim/startup/xsize", dm.dmPelsWidth);
1533 fgSetInt("/sim/startup/ysize", dm.dmPelsHeight);
1534 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1535 fgGetInt("/sim/startup/ysize") );
1536 sprintf( game_mode_str, "%dx%d:%d@%d",
1540 dm.dmDisplayFrequency );
1542 // Open the cool new 'game mode' window
1543 sprintf( game_mode_str, "width=%d height=%d bpp=%d",
1544 fgGetInt("/sim/startup/xsize"),
1545 fgGetInt("/sim/startup/ysize"),
1546 fgGetInt("/sim/rendering/bits-per-pixel"));
1548 #endif // HAVE_WINDOWS_H
1549 SG_LOG( SG_GENERAL, SG_INFO,
1550 "game mode params = " << game_mode_str );
1551 glutGameModeString( game_mode_str );
1552 glutEnterGameMode();
1553 #endif // GLUT_WRONG_VERSION
1556 // This seems to be the absolute earliest in the init sequence
1557 // that these calls will return valid info. Too bad it's after
1558 // we've already created and sized out window. :-(
1559 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
1560 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
1561 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
1562 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
1565 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
1566 general.set_glMaxTexSize( tmp );
1567 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
1569 glGetIntegerv( GL_DEPTH_BITS, &tmp );
1570 general.set_glDepthBits( tmp );
1571 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
1577 // Initialize GLUT event handlers
1578 static bool fgGlutInitEvents( void ) {
1579 // call fgReshape() on window resizes
1580 glutReshapeFunc( fgReshape );
1582 // keyboard and mouse callbacks are set in FGInput::init
1584 // call fgMainLoop() whenever there is
1585 // nothing else to do
1586 glutIdleFunc( fgIdleFunction );
1589 glutDisplayFunc( fgRenderFrame );
1594 // Main top level initialization
1595 static bool fgMainInit( int argc, char **argv ) {
1597 #if defined( macintosh )
1598 freopen ("stdout.txt", "w", stdout );
1599 freopen ("stderr.txt", "w", stderr );
1600 argc = ccommand( &argv );
1603 // set default log levels
1604 sglog().setLogLevels( SG_ALL, SG_INFO );
1607 #ifdef FLIGHTGEAR_VERSION
1608 version = FLIGHTGEAR_VERSION;
1610 version = "unknown version";
1612 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
1614 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
1616 // Allocate global data structures. This needs to happen before
1617 // we parse command line options
1619 globals = new FGGlobals;
1621 // seed the random number generater
1624 SGRoute *route = new SGRoute;
1625 globals->set_route( route );
1627 FGControls *controls = new FGControls;
1628 globals->set_controls( controls );
1630 string_list *col = new string_list;
1631 globals->set_channel_options_list( col );
1633 // Scan the config file(s) and command line options to see if
1634 // fg_root was specified (ignore all other options for now)
1635 fgInitFGRoot(argc, argv);
1637 // Check for the correct base package version
1638 static char required_version[] = "0.9.2";
1639 string base_version = fgBasePackageVersion();
1640 if ( !(base_version == required_version) ) {
1641 // tell the operator how to use this application
1643 cerr << endl << "Base package check failed ... " \
1644 << "Found version " << base_version << " at: " \
1645 << globals->get_fg_root() << endl;
1646 cerr << "Please upgrade to version: " << required_version << endl;
1650 // Initialize the Aircraft directory to "" (UIUC)
1653 // Load the configuration parameters. (Command line options
1654 // overrides config file options. Config file options override
1656 if ( !fgInitConfig(argc, argv) ) {
1657 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
1661 // Initialize the Window/Graphics environment.
1662 if( !fgGlutInit(&argc, argv) ) {
1663 SG_LOG( SG_GENERAL, SG_ALERT, "GLUT initialization failed ..." );
1667 // Initialize the various GLUT Event Handlers.
1668 if( !fgGlutInitEvents() ) {
1669 SG_LOG( SG_GENERAL, SG_ALERT,
1670 "GLUT event handler initialization failed ..." );
1674 // Initialize plib net interface
1675 netInit( &argc, argv );
1677 // Initialize ssg (from plib). Needs to come before we do any
1678 // other ssg stuff, but after opengl/glut has been initialized.
1681 // Initialize the user interface (we need to do this before
1682 // passing off control to glut and before fgInitGeneral to get our
1686 // Read the list of available aircrafts
1689 #ifdef GL_EXT_texture_lod_bias
1690 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
1693 // get the address of our OpenGL extensions
1694 if ( fgGetBool("/sim/rendering/distance-attenuation") )
1696 if (SGIsOpenGLExtensionSupported("GL_EXT_point_parameters") ) {
1697 glPointParameterIsSupported = true;
1698 glPointParameterfPtr = (glPointParameterfProc)
1699 SGLookupFunction("glPointParameterfEXT");
1700 glPointParameterfvPtr = (glPointParameterfvProc)
1701 SGLookupFunction("glPointParameterfvEXT");
1703 } else if ( SGIsOpenGLExtensionSupported("GL_ARB_point_parameters") ) {
1704 glPointParameterIsSupported = true;
1705 glPointParameterfPtr = (glPointParameterfProc)
1706 SGLookupFunction("glPointParameterfARB");
1707 glPointParameterfvPtr = (glPointParameterfvProc)
1708 SGLookupFunction("glPointParameterfvARB");
1710 glPointParameterIsSupported = false;
1713 // based on the requested presets, calculate the true starting
1718 SGTime *t = fgInitTime();
1719 globals->set_time_params( t );
1721 // Do some quick general initializations
1722 if( !fgInitGeneral()) {
1723 SG_LOG( SG_GENERAL, SG_ALERT,
1724 "General initializations failed ..." );
1728 SGPath modelpath( globals->get_fg_root() );
1729 ssgModelPath( (char *)modelpath.c_str() );
1731 ////////////////////////////////////////////////////////////////////
1732 // Initialize the property-based built-in commands
1733 ////////////////////////////////////////////////////////////////////
1736 ////////////////////////////////////////////////////////////////////
1737 // Initialize the material manager
1738 ////////////////////////////////////////////////////////////////////
1739 globals->set_matlib( new SGMaterialLib );
1741 globals->set_model_lib(new SGModelLib);
1743 ////////////////////////////////////////////////////////////////////
1744 // Initialize the TG scenery subsystem.
1745 ////////////////////////////////////////////////////////////////////
1746 globals->set_scenery( new FGScenery );
1747 globals->get_scenery()->init();
1748 globals->get_scenery()->bind();
1749 globals->set_tile_mgr( new FGTileMgr );
1751 ////////////////////////////////////////////////////////////////////
1752 // Initialize the general model subsystem.
1753 ////////////////////////////////////////////////////////////////////
1754 globals->set_model_mgr(new FGModelMgr);
1755 globals->get_model_mgr()->init();
1756 globals->get_model_mgr()->bind();
1758 ////////////////////////////////////////////////////////////////////
1759 // Initialize the 3D aircraft model subsystem (has a dependency on
1760 // the scenery subsystem.)
1761 ////////////////////////////////////////////////////////////////////
1762 globals->set_aircraft_model(new FGAircraftModel);
1763 globals->get_aircraft_model()->init();
1764 globals->get_aircraft_model()->bind();
1766 ////////////////////////////////////////////////////////////////////
1767 // Initialize the view manager subsystem.
1768 ////////////////////////////////////////////////////////////////////
1769 FGViewMgr *viewmgr = new FGViewMgr;
1770 globals->set_viewmgr( viewmgr );
1775 // Initialize the sky
1776 SGPath ephem_data_path( globals->get_fg_root() );
1777 ephem_data_path.append( "Astro" );
1778 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
1779 ephem->update( globals->get_time_params()->getMjd(),
1780 globals->get_time_params()->getLst(),
1782 globals->set_ephem( ephem );
1784 // TODO: move to environment mgr
1786 SGPath texture_path(globals->get_fg_root());
1787 texture_path.append("Textures");
1788 texture_path.append("Sky");
1789 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
1790 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
1791 thesky->add_cloud_layer(layer);
1795 SGPath sky_tex_path( globals->get_fg_root() );
1796 sky_tex_path.append( "Textures" );
1797 sky_tex_path.append( "Sky" );
1798 thesky->texture_path( sky_tex_path.str() );
1800 // The sun and moon diameters are scaled down numbers of the
1801 // actual diameters. This was needed to fit bot the sun and the
1802 // moon within the distance to the far clip plane.
1803 // Moon diameter: 3,476 kilometers
1804 // Sun diameter: 1,390,000 kilometers
1805 thesky->build( 80000.0, 80000.0,
1807 globals->get_ephem()->getNumPlanets(),
1808 globals->get_ephem()->getPlanets(),
1809 globals->get_ephem()->getNumStars(),
1810 globals->get_ephem()->getStars() );
1812 // Initialize MagVar model
1813 SGMagVar *magvar = new SGMagVar();
1814 globals->set_mag( magvar );
1817 // kludge to initialize mag compass
1818 // (should only be done for in-flight
1820 // update magvar model
1821 globals->get_mag()->update( fgGetDouble("/position/longitude-deg")
1822 * SGD_DEGREES_TO_RADIANS,
1823 fgGetDouble("/position/latitude-deg")
1824 * SGD_DEGREES_TO_RADIANS,
1825 fgGetDouble("/position/altitude-ft")
1827 globals->get_time_params()->getJD() );
1828 double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
1829 fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
1831 // airport = new ssgBranch;
1832 // airport->setName( "Airport Lighting" );
1833 // lighting->addKid( airport );
1839 #ifdef FG_NETWORK_OLK
1840 // Do the network intialization
1841 if ( fgGetBool("/sim/networking/network-olk") ) {
1842 printf("Multipilot mode %s\n",
1843 fg_net_init( globals->get_scenery()->get_scene_graph() ) );
1847 // build our custom render states
1848 fgBuildRenderStates();
1850 // pass control off to the master GLUT event handler
1853 // we never actually get here ... but to avoid compiler warnings,
1859 // $$$ end - added VS Renganathan, 15 Oct 2K
1860 // - added Venky , 12 Nov 2K
1862 #if defined(__linux__) && defined(__i386__)
1864 static void handleFPE (int);
1869 fpu_control_t fpe_flags = 0;
1870 _FPU_GETCW(fpe_flags);
1871 // fpe_flags &= ~_FPU_MASK_IM; // invalid operation
1872 // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
1873 // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
1874 // fpe_flags &= ~_FPU_MASK_OM; // overflow
1875 // fpe_flags &= ~_FPU_MASK_UM; // underflow
1876 // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
1877 _FPU_SETCW(fpe_flags);
1878 signal(SIGFPE, handleFPE);
1885 SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
1898 short CPSGetCurrentProcess(PSN *psn);
1899 short CPSSetProcessName (PSN *psn, char *processname);
1900 short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
1901 short CPSSetFrontProcess(PSN *psn);
1904 #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
1908 // Main entry point; catch any exceptions that have made it this far.
1909 int main ( int argc, char **argv ) {
1911 // Enable floating-point exceptions for Linux/x86
1912 #if defined(__linux__) && defined(__i386__)
1916 // Enable floating-point exceptions for Windows
1917 #if defined( _MSC_VER ) && defined( DEBUG )
1918 // Christian, we should document what this does
1919 _control87( _EM_INEXACT, _MCW_EM );
1922 #if defined( HAVE_BC5PLUS )
1923 _control87(MCW_EM, MCW_EM); /* defined in float.h */
1926 // Keyboard focus hack
1931 glutInit (&argc, argv);
1933 CPSGetCurrentProcess(&psn);
1934 CPSSetProcessName(&psn, "FlightGear");
1936 CPSSetFrontProcess(&psn);
1940 // FIXME: add other, more specific
1943 fgMainInit(argc, argv);
1944 } catch (sg_throwable &t) {
1945 // We must use cerr rather than
1946 // logging, since logging may be
1948 cerr << "Fatal error: " << t.getFormattedMessage()
1949 << "\n (received from " << t.getOrigin() << ')' << endl;
1957 void fgLoadDCS(void) {
1959 ssgEntity *ship_obj = NULL;
1961 char obj_filename[25];
1963 for ( int k = 0; k < 32; k++ ) {
1967 SGPath tile_path( globals->get_fg_root());
1968 tile_path.append( "Scenery" );
1969 tile_path.append( "Objects.txt" );
1970 sg_gzifstream in( tile_path.str() );
1971 if ( ! in.is_open() ) {
1972 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
1975 SGPath modelpath( globals->get_fg_root() );
1976 modelpath.append( "Models" );
1977 modelpath.append( "Geometry" );
1979 SGPath texturepath( globals->get_fg_root() );
1980 texturepath.append( "Models" );
1981 texturepath.append( "Textures" );
1983 ssgModelPath( (char *)modelpath.c_str() );
1984 ssgTexturePath( (char *)texturepath.c_str() );
1986 ship_sel = new ssgSelector;
1989 while ( ! in.eof() ) {
1991 if ( in.get( c ) && c == '#' ) {
1995 in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
1996 /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] << " " << obj_alt[objc] << endl;
1997 int chj=getchar();*/
1999 obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
2000 obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
2002 ship_pos[objc] = new ssgTransform;
2004 // type "repeat" in objects.txt to load one more
2005 // instance of the last object.
2007 if ( strcmp(obj_filename,"repeat") != 0) {
2009 globals->get_model_lib()->load_model( globals->get_fg_root(), obj_filename, globals->get_props(), globals->get_sim_time_sec() );
2012 if ( ship_obj != NULL ) {
2013 ship_obj->setName(obj_filename);
2015 ship_obj->clrTraversalMaskBits( SSGTRAV_HOT );
2017 ship_obj->setTraversalMaskBits( SSGTRAV_HOT );
2018 ship_pos[objc]->addKid( ship_obj ); // add object to transform node
2019 ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
2020 SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: "
2023 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
2027 // temporary hack for deck lights - ultimately should move to PLib (when??)
2028 //const char *extn = file_extension ( obj_filename ) ;
2030 // ssgVertexArray *lights = new ssgVertexArray( 100 );
2031 ssgVertexArray *lightpoints = new ssgVertexArray( 100 );
2032 ssgVertexArray *lightnormals = new ssgVertexArray( 100 );
2033 ssgVertexArray *lightdir = new ssgVertexArray( 100 );
2034 int ltype[500], light_type = 0;
2035 static int ltcount = 0;
2037 sgVec3 rway_dir,rway_normal,lightpt;
2039 modelpath.append(obj_filename);
2040 sg_gzifstream in1( modelpath.str() );
2041 if ( ! in1.is_open() ) {
2042 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() );
2044 while ( ! in1.eof() ) {
2046 if ( in1.get( c ) && c == '#' ) {
2051 //cout << token << endl;
2052 if ( token == "runway" ) {
2054 sgSetVec3 (rway_dir, node[0], node[1], node[2] );
2055 } else if ( token == "edgelight" ) {
2057 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2059 } else if ( token == "taxi" ) {
2061 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2063 } else if ( token == "vasi" ) {
2065 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2067 } else if ( token == "threshold" ) {
2069 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2071 } else if ( token == "rabbit" ) {
2073 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2075 } else if ( token == "ols" ) {
2077 sgSetVec3 (rway_ols, node[0], node[1], node[2] );
2079 } else if ( token == "red" ) {
2081 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2083 } else if ( token == "green" ) {
2085 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2087 } else if ( token == "lp" ) {
2089 sgSetVec3 (lightpt, node[0], node[1], node[2] );
2090 lightpoints->add( lightpt );
2091 lightnormals->add( rway_normal );
2092 lightdir->add( rway_dir );
2093 ltype[ltcount]= light_type;
2096 if (in1.eof()) break;
2101 if ( lightpoints->getNum() ) {
2102 ssgBranch *lightpoints_branch;
2103 long int dummy = -999;
2104 dummy_tile = new FGTileEntry((SGBucket)dummy);
2105 dummy_tile->lightmaps_sequence = new ssgSelector;
2106 dummy_tile->ols_transform = new ssgTransform;
2108 // call function to generate the runway lights
2109 lightpoints_branch =
2110 dummy_tile->gen_runway_lights( lightpoints, lightnormals,
2112 lightpoints_brightness->addKid(lightpoints_branch);
2113 lightpoints_transform->addKid(lightpoints_brightness);
2114 //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
2115 lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
2116 lightpoints_transform->ref();
2117 globals->get_scenery()->get_gnd_lights_root()->addKid( lightpoints_transform );
2122 // end hack for deck lights
2126 if (in.eof()) break;
2130 SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
2132 globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node
2139 void fgUpdateDCS (void) {
2141 // double eye_lat,eye_lon,eye_alt;
2142 // static double obj_head;
2143 double sl_radius,obj_latgc;
2144 // float nresultmat[4][4];
2145 // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3;
2148 // Instantaneous Geodetic Lat/Lon/Alt of moving object
2149 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
2151 // Deck should be the first object in objects.txt in case of fdm=ada
2153 if (!strcmp(fgGetString("/sim/flight-model"), "ada")) {
2154 if ((fdm->get_iaux(1))==1)
2156 obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS;
2157 obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS;
2158 obj_alt[1] = fdm->get_daux(3);
2159 obj_pitch[1] = fdm->get_faux(1);
2160 obj_roll[1] = fdm->get_faux(2);
2164 for ( int m = 0; m < objc; m++ ) {
2165 //cout << endl << obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
2168 //Geodetic to Geocentric angles for rotation
2169 sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc);
2171 //moving object gbs-posn in cartesian coords
2172 Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]);
2173 Point3D obj_pos = sgGeodToCart( obj_posn );
2175 // Translate moving object w.r.t eye
2176 Point3D Objtrans = obj_pos - globals->get_scenery()->get_center();
2181 // rotate dynamic objects for lat,lon & alt and other motion about its axes
2184 sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]);
2186 sgVec3 ship_fwd,ship_rt,ship_up;
2187 sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll
2188 sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch
2189 sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw
2191 sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll;
2192 sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up );
2193 sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt );
2194 sgMakeRotMat4( sgROT_hdg, 180.0, ship_up );
2195 sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt );
2196 sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd );
2199 sgCopyMat4( sgTUX, sgROT_hdg );
2200 sgPostMultMat4( sgTUX, sgROT_pitch );
2201 sgPostMultMat4( sgTUX, sgROT_roll );
2202 sgPostMultMat4( sgTUX, sgROT_lat );
2203 sgPostMultMat4( sgTUX, sgROT_lon );
2204 sgPostMultMat4( sgTUX, sgTRANS );
2207 sgSetCoord(&shippos, sgTUX );
2208 ship_pos[m]->setTransform( &shippos );
2209 // temporary hack for deck lights - ultimately should move to PLib (when ??)
2211 if (lightpoints_transform) {
2212 lightpoints_transform->setTransform( &shippos );
2213 float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
2214 if ( sun_angle > 89 ) {
2215 lightpoints_brightness->select(0x01);
2217 lightpoints_brightness->select(0x00);
2226 sgXformPnt3( rp, rway_ols, sgTUX );
2227 vp = globals->get_current_view()->get_view_pos();
2228 to[0] = rp[0]-vp[0];
2229 to[1] = rp[1]-vp[1];
2230 to[2] = rp[2]-vp[2];
2231 float dist = sgLengthVec3( to );
2232 alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2];
2234 elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES;
2236 ref_elev = elev - 3.75; // +ve above, -ve below
2240 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2241 // if (ref_elev > 0.51) sel = 0x21;
2242 // if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22;
2243 // if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24;
2244 // if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28;
2245 // if (ref_elev < -0.51) sel = 0x30;
2246 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2247 // dummy_tile->lightmaps_sequence->select(sel);
2250 sgCopyVec3 (up, ship_up);
2252 sgScaleVec3 (up, 4.0*ref_elev*dist/750.0);
2254 sgScaleVec3 (up, 4.0*ref_elev);
2255 // dummy_tile->ols_transform->setTransform(up);
2256 //cout << "ref_elev " << ref_elev << endl;
2258 // end hack for deck lights
2261 if ( ship_sel != NULL ) {
2262 ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel
2266 // $$$ end - added VS Renganathan, 15 Oct 2K
2267 // added Venky , 12 Nov 2K