1 // radiostack.cxx -- class to manage an instance of the radio stack
3 // Written by Curtis Olson, started April 2000.
5 // Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <simgear/compiler.h>
29 #include <simgear/math/sg_random.h>
31 #include <Aircraft/aircraft.hxx>
32 #include <Navaids/ilslist.hxx>
33 #include <Navaids/mkrbeacons.hxx>
34 #include <Navaids/navlist.hxx>
35 #include <Time/event.hxx>
37 #include "radiostack.hxx"
39 static int nav1_play_count = 0;
40 static int nav2_play_count = 0;
41 static int adf_play_count = 0;
42 static time_t nav1_last_time = 0;
43 static time_t nav2_last_time = 0;
44 static time_t adf_last_time = 0;
47 FGRadioStack *current_radiostack;
51 * Boy, this is ugly! Make the VOR range vary by altitude difference.
53 static double kludgeRange ( double stationElev, double aircraftElev,
56 // Assume that the nominal range (usually
57 // 50nm) applies at a 5,000 ft difference.
59 double factor = ((aircraftElev*SG_METER_TO_FEET) - stationElev) / 5000.0;
60 double range = fabs(nominalRange * factor);
62 // Clamp the range to keep it sane; for
63 // now, never less than 25% or more than
64 // 500% of nominal range.
65 if (range < nominalRange/4.0) {
66 range = nominalRange/4.0;
67 } else if (range > nominalRange*5.0) {
68 range = nominalRange*5.0;
75 // periodic radio station search wrapper
76 static void fgRadioSearch( void ) {
77 current_radiostack->search();
81 FGRadioStack::FGRadioStack() :
82 lon_node(fgGetNode("/position/longitude-deg", true)),
83 lat_node(fgGetNode("/position/latitude-deg", true)),
84 alt_node(fgGetNode("/position/altitude-ft", true)),
100 SGPath path( globals->get_fg_root() );
102 term.append( "Navaids/range.term" );
104 low.append( "Navaids/range.low" );
106 high.append( "Navaids/range.high" );
108 term_tbl = new SGInterpTable( term.str() );
109 low_tbl = new SGInterpTable( low.str() );
110 high_tbl = new SGInterpTable( high.str() );
111 dme_last_time.stamp();
116 FGRadioStack::~FGRadioStack()
118 unbind(); // FIXME: should be called externally
127 FGRadioStack::init ()
136 // Search radio database once per second
137 global_events.Register( "fgRadioSearch()", fgRadioSearch,
138 fgEVENT::FG_EVENT_READY, 1000);
142 FGRadioStack::bind ()
145 fgTie("/radios/nav[0]/frequencies/selected-mhz", this,
146 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
147 fgSetArchivable("/radios/nav[0]/frequencies/selected-mhz");
148 fgTie("/radios/nav[0]/frequencies/standby-mhz", this,
149 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
150 fgSetArchivable("/radios/nav[0]/frequencies/standby-mhz");
151 fgTie("/radios/nav[0]/radials/selected-deg", this,
152 &FGRadioStack::get_nav1_sel_radial,
153 &FGRadioStack::set_nav1_sel_radial);
154 fgSetArchivable("/radios/nav[0]/radials/selected-deg");
155 fgTie("/radios/nav[0]/volume", this,
156 &FGRadioStack::get_nav1_vol_btn,
157 &FGRadioStack::set_nav1_vol_btn);
158 fgSetArchivable("/radios/nav[0]/volume");
159 fgTie("/radios/nav[0]/ident", this,
160 &FGRadioStack::get_nav1_ident_btn,
161 &FGRadioStack::set_nav1_ident_btn);
162 fgSetArchivable("/radios/nav[0]/ident");
165 fgTie("/radios/nav[0]/radials/actual-deg", this,
166 &FGRadioStack::get_nav1_radial);
167 fgTie("/radios/nav[0]/to-flag", this, &FGRadioStack::get_nav1_to_flag);
168 fgTie("/radios/nav[0]/from-flag", this, &FGRadioStack::get_nav1_from_flag);
169 fgTie("/radios/nav[0]/in-range", this, &FGRadioStack::get_nav1_inrange);
170 fgTie("/radios/nav[0]/heading-needle-deflection", this,
171 &FGRadioStack::get_nav1_heading_needle_deflection);
172 fgTie("/radios/nav[0]/gs-needle-deflection", this,
173 &FGRadioStack::get_nav1_gs_needle_deflection);
176 fgTie("/radios/nav[1]/frequencies/selected-mhz", this,
177 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
178 fgSetArchivable("/radios/nav[1]/frequencies/selected-mhz");
179 fgTie("/radios/nav[1]/frequencies/standby-mhz", this,
180 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
181 fgSetArchivable("/radios/nav[1]/frequencies/standby-mhz");
182 fgTie("/radios/nav[1]/radials/selected-deg", this,
183 &FGRadioStack::get_nav2_sel_radial,
184 &FGRadioStack::set_nav2_sel_radial);
185 fgSetArchivable("/radios/nav[1]/radials/selected-deg");
186 fgTie("/radios/nav[1]/volume", this,
187 &FGRadioStack::get_nav2_vol_btn,
188 &FGRadioStack::set_nav2_vol_btn);
189 fgSetArchivable("/radios/nav[1]/volume");
190 fgTie("/radios/nav[1]/ident", this,
191 &FGRadioStack::get_nav2_ident_btn,
192 &FGRadioStack::set_nav2_ident_btn);
193 fgSetArchivable("/radios/nav[1]/ident");
196 fgTie("/radios/nav[1]/radials/actual-deg", this,
197 &FGRadioStack::get_nav2_radial);
198 fgTie("/radios/nav[1]/to-flag", this, &FGRadioStack::get_nav2_to_flag);
199 fgTie("/radios/nav[1]/from-flag", this, &FGRadioStack::get_nav2_from_flag);
200 fgTie("/radios/nav[1]/in-range", this, &FGRadioStack::get_nav2_inrange);
201 fgTie("/radios/nav[1]/heading-needle-deflection", this,
202 &FGRadioStack::get_nav2_heading_needle_deflection);
203 fgTie("/radios/nav[1]/gs-needle-deflection", this,
204 &FGRadioStack::get_nav2_gs_needle_deflection);
207 fgTie("/radios/dme/frequencies/selected-khz", this,
208 &FGRadioStack::get_dme_freq, &FGRadioStack::set_adf_freq);
211 fgTie("/radios/dme/in-range", this, &FGRadioStack::get_dme_inrange);
212 fgTie("/radios/dme/distance-nm", this, &FGRadioStack::get_dme_dist);
213 fgTie("/radios/dme/speed-kt", this, &FGRadioStack::get_dme_spd);
214 fgTie("/radios/dme/ete-min", this, &FGRadioStack::get_dme_ete);
217 fgTie("/radios/adf/frequencies/selected-khz", this,
218 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
219 fgSetArchivable("/radios/adf/frequencies/selected-khz");
220 fgTie("/radios/adf/frequencies/standby-khz", this,
221 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
222 fgSetArchivable("/radios/adf/frequencies/standby-khz");
223 fgTie("/radios/adf/rotation-deg", this,
224 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
225 fgSetArchivable("/radios/adf/rotation-deg");
226 fgTie("/radios/adf/volume", this,
227 &FGRadioStack::get_adf_vol_btn,
228 &FGRadioStack::set_adf_vol_btn);
229 fgSetArchivable("/radios/adf/volume");
230 fgTie("/radios/adf/ident", this,
231 &FGRadioStack::get_adf_ident_btn,
232 &FGRadioStack::set_adf_ident_btn);
233 fgSetArchivable("/radios/adf/ident");
235 fgTie("/radios/marker-beacon/inner", this,
236 &FGRadioStack::get_inner_blink);
237 fgTie("/radios/marker-beacon/middle", this,
238 &FGRadioStack::get_middle_blink);
239 fgTie("/radios/marker-beacon/outer", this,
240 &FGRadioStack::get_outer_blink);
244 FGRadioStack::unbind ()
246 fgUntie("/radios/nav[0]/frequencies/selected-mhz");
247 fgUntie("/radios/nav[0]/frequencies/standby-mhz");
248 fgUntie("/radios/nav[0]/radials/actual-deg");
249 fgUntie("/radios/nav[0]/radials/selected-deg");
250 fgUntie("/radios/nav[0]/on");
251 fgUntie("/radios/nav[0]/ident");
252 fgUntie("/radios/nav[0]/to-flag");
253 fgUntie("/radios/nav[0]/from-flag");
254 fgUntie("/radios/nav[0]/in-range");
255 fgUntie("/radios/nav[0]/heading-needle-deflection");
256 fgUntie("/radios/nav[0]/gs-needle-deflection");
258 fgUntie("/radios/nav[1]/frequencies/selected-mhz");
259 fgUntie("/radios/nav[1]/frequencies/standby-mhz");
260 fgUntie("/radios/nav[1]/radials/actual-deg");
261 fgUntie("/radios/nav[1]/radials/selected-deg");
262 fgUntie("/radios/nav[1]/on");
263 fgUntie("/radios/nav[1]/ident");
264 fgUntie("/radios/nav[1]/to-flag");
265 fgUntie("/radios/nav[1]/from-flag");
266 fgUntie("/radios/nav[1]/in-range");
267 fgUntie("/radios/nav[1]/heading-needle-deflection");
268 fgUntie("/radios/nav[1]/gs-needle-deflection");
270 fgUntie("/radios/dme/frequencies/selected-khz");
273 fgUntie("/radios/dme/in-range");
274 fgUntie("/radios/dme/distance-nm");
275 fgUntie("/radios/dme/speed-kt");
276 fgUntie("/radios/dme/ete-min");
278 fgUntie("/radios/adf/frequencies/selected-khz");
279 fgUntie("/radios/adf/frequencies/standby-khz");
280 fgUntie("/radios/adf/rotation-deg");
281 fgUntie("/radios/adf/on");
282 fgUntie("/radios/adf/ident");
284 fgUntie("/radios/marker-beacon/inner");
285 fgUntie("/radios/marker-beacon/middle");
286 fgUntie("/radios/marker-beacon/outer");
290 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
291 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
292 double nominalRange )
294 // extend out actual usable range to be 1.3x the published safe range
295 const double usability_factor = 1.3;
297 // assumptions we model the standard service volume, plus
298 // ... rather than specifying a cylinder, we model a cone that
299 // contains the cylinder. Then we put an upside down cone on top
300 // to model diminishing returns at too-high altitudes.
302 // altitude difference
303 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
304 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
305 // << " station elev = " << stationElev << endl;
307 if ( nominalRange < 25.0 + SG_EPSILON ) {
308 // Standard Terminal Service Volume
309 return term_tbl->interpolate( alt ) * usability_factor;
310 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
311 // Standard Low Altitude Service Volume
312 // table is based on range of 40, scale to actual range
313 return low_tbl->interpolate( alt ) * nominalRange / 40.0
316 // Standard High Altitude Service Volume
317 // table is based on range of 130, scale to actual range
318 return high_tbl->interpolate( alt ) * nominalRange / 130.0
324 // model standard ILS service volumes as per AIM 1-1-9
325 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
326 double offsetDegrees, double distance )
328 // assumptions we model the standard service volume, plus
330 // altitude difference
331 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
332 double offset = fabs( offsetDegrees );
335 return FG_ILS_DEFAULT_RANGE;
336 } else if ( offset < 35 ) {
337 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
338 } else if ( offset < 45 ) {
339 return (45 - offset);
340 } else if ( offset > 170 ) {
341 return FG_ILS_DEFAULT_RANGE;
342 } else if ( offset > 145 ) {
343 return 10 + (offset - 145) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
344 } else if ( offset > 135 ) {
345 return (offset - 135);
352 // Update the various nav values based on position and valid tuned in navs
354 FGRadioStack::update()
356 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
357 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
358 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
362 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
366 ////////////////////////////////////////////////////////////////////////
368 ////////////////////////////////////////////////////////////////////////
371 station = Point3D( nav1_x, nav1_y, nav1_z );
372 nav1_loc_dist = aircraft.distance3D( station );
375 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
376 nav1_gs_dist = aircraft.distance3D( station );
382 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
383 nav1_loclat, nav1_loclon,
385 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
386 nav1_heading = az1 - nav1_magvar;
387 // cout << " heading = " << nav1_heading
388 // << " dist = " << nav1_dist << endl;
391 double offset = nav1_heading - nav1_radial;
392 while ( offset < -180.0 ) { offset += 360.0; }
393 while ( offset > 180.0 ) { offset -= 360.0; }
394 // cout << "ils offset = " << offset << endl;
395 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
396 nav1_loc_dist * SG_METER_TO_NM );
398 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
400 // cout << "nav1 range = " << nav1_effective_range
401 // << " (" << nav1_range << ")" << endl;
403 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
405 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
406 nav1_inrange = sg_random() <
407 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
408 (nav1_effective_range * SG_NM_TO_METER);
410 nav1_inrange = false;
414 nav1_radial = nav1_sel_radial;
417 nav1_inrange = false;
418 // cout << "not picking up vor. :-(" << endl;
421 #ifdef ENABLE_AUDIO_SUPPORT
422 if ( nav1_valid && nav1_inrange ) {
423 // play station ident via audio system if on + ident,
424 // otherwise turn it off
425 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
426 FGSimpleSound *sound;
427 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
428 sound->set_volume( nav1_vol_btn * 0.3 );
429 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
430 sound->set_volume( nav1_vol_btn * 0.3 );
431 if ( nav1_last_time <
432 globals->get_time_params()->get_cur_time() - 30 ) {
433 nav1_last_time = globals->get_time_params()->get_cur_time();
436 if ( nav1_play_count < 4 ) {
438 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
439 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
442 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
444 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
445 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
446 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
451 globals->get_soundmgr()->stop( "nav1-vor-ident" );
452 globals->get_soundmgr()->stop( "nav1-dme-ident" );
458 ////////////////////////////////////////////////////////////////////////
460 ////////////////////////////////////////////////////////////////////////
463 station = Point3D( nav2_x, nav2_y, nav2_z );
464 nav2_loc_dist = aircraft.distance3D( station );
467 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
468 nav2_gs_dist = aircraft.distance3D( station );
474 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
475 nav2_loclat, nav2_loclon,
477 nav2_heading = az1 - nav2_magvar;
478 // cout << " heading = " << nav2_heading
479 // << " dist = " << nav2_dist << endl;
482 double offset = nav2_heading - nav2_radial;
483 while ( offset < -180.0 ) { offset += 360.0; }
484 while ( offset > 180.0 ) { offset -= 360.0; }
485 // cout << "ils offset = " << offset << endl;
486 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
487 nav2_loc_dist * SG_METER_TO_NM );
489 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
491 // cout << "nav2 range = " << nav2_effective_range
492 // << " (" << nav2_range << ")" << endl;
494 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
496 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
497 nav2_inrange = sg_random() <
498 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
499 (nav2_effective_range * SG_NM_TO_METER);
501 nav2_inrange = false;
505 nav2_radial = nav2_sel_radial;
508 nav2_inrange = false;
509 // cout << "not picking up vor. :-(" << endl;
512 #ifdef ENABLE_AUDIO_SUPPORT
513 if ( nav2_valid && nav2_inrange ) {
514 // play station ident via audio system if on + ident,
515 // otherwise turn it off
516 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
517 FGSimpleSound *sound;
518 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
519 sound->set_volume( nav2_vol_btn * 0.3 );
520 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
521 sound->set_volume( nav2_vol_btn * 0.3 );
522 if ( nav2_last_time <
523 globals->get_time_params()->get_cur_time() - 30 ) {
524 nav2_last_time = globals->get_time_params()->get_cur_time();
527 if ( nav2_play_count < 4 ) {
529 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
530 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
533 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
535 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
536 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
537 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
542 globals->get_soundmgr()->stop( "nav2-vor-ident" );
543 globals->get_soundmgr()->stop( "nav2-dme-ident" );
549 ////////////////////////////////////////////////////////////////////////
551 ////////////////////////////////////////////////////////////////////////
554 station = Point3D( dme_x, dme_y, dme_z );
555 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
556 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
557 if (dme_dist < dme_effective_range * SG_NM_TO_METER) {
559 } else if (dme_dist < 2 * dme_effective_range * SG_NM_TO_METER) {
560 dme_inrange = sg_random() <
561 (2 * dme_effective_range * SG_NM_TO_METER - dme_dist) /
562 (dme_effective_range * SG_NM_TO_METER);
567 SGTimeStamp current_time;
568 station = Point3D( dme_x, dme_y, dme_z );
569 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
570 current_time.stamp();
571 long dMs = (current_time - dme_last_time) / 1000;
572 // Update every second
574 double dDist = dme_dist - dme_prev_dist;
575 dme_spd = fabs((dDist/dMs) * 3600000);
576 // FIXME: the panel should be able to
580 dme_ete = fabs((dme_dist/dme_spd) * 60.0);
581 // FIXME: the panel should be able to
585 dme_prev_dist = dme_dist;
586 dme_last_time.stamp();
596 ////////////////////////////////////////////////////////////////////////
598 ////////////////////////////////////////////////////////////////////////
601 // staightline distance
602 station = Point3D( adf_x, adf_y, adf_z );
603 adf_dist = aircraft.distance3D( station );
606 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
610 // cout << " heading = " << nav2_heading
611 // << " dist = " << nav2_dist << endl;
613 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
614 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
616 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
617 adf_inrange = sg_random() <
618 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
619 (adf_effective_range * SG_NM_TO_METER);
627 #ifdef ENABLE_AUDIO_SUPPORT
628 if ( adf_valid && adf_inrange ) {
629 // play station ident via audio system if on + ident,
630 // otherwise turn it off
631 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
632 FGSimpleSound *sound;
633 sound = globals->get_soundmgr()->find( "adf-ident" );
634 sound->set_volume( adf_vol_btn * 0.3 );
636 globals->get_time_params()->get_cur_time() - 30 ) {
637 adf_last_time = globals->get_time_params()->get_cur_time();
640 if ( adf_play_count < 4 ) {
642 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
643 globals->get_soundmgr()->play_once( "adf-ident" );
648 globals->get_soundmgr()->stop( "adf-ident" );
653 // marker beacon blinking
654 bool light_on = ( outer_blink || middle_blink || inner_blink );
658 if ( light_on && (current - blink > 400000) ) {
661 } else if ( !light_on && (current - blink > 100000) ) {
666 if ( outer_marker ) {
667 outer_blink = light_on;
672 if ( middle_marker ) {
673 middle_blink = light_on;
675 middle_blink = false;
678 if ( inner_marker ) {
679 inner_blink = light_on;
684 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
688 // Update current nav/adf radio stations based on current postition
689 void FGRadioStack::search()
691 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
693 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
694 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
695 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
697 // FIXME: the panel should handle this
698 // don't worry about overhead for now,
699 // since this is handled only periodically
700 int dme_switch_pos = fgGetInt("/panel/dme/switch-position");
701 if (dme_switch_pos == 0) {
704 } else if (dme_switch_pos == 1) {
705 if (dme_freq != nav1_freq) {
706 dme_freq = nav1_freq;
709 } else if (dme_switch_pos == 3) {
710 if (dme_freq != nav2_freq) {
711 dme_freq = nav2_freq;
719 static string last_nav1_ident = "";
720 static string last_nav2_ident = "";
721 static string last_adf_ident = "";
722 static bool last_nav1_vor = false;
723 static bool last_nav2_vor = false;
726 ////////////////////////////////////////////////////////////////////////
728 ////////////////////////////////////////////////////////////////////////
730 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
731 nav1_ident = ils.get_locident();
733 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
734 nav1_trans_ident = ils.get_trans_ident();
735 last_nav1_ident = nav1_ident;
736 last_nav1_vor = false;
738 nav1_has_dme = ils.get_has_dme();
739 nav1_has_gs = ils.get_has_gs();
741 nav1_loclon = ils.get_loclon();
742 nav1_loclat = ils.get_loclat();
743 nav1_gslon = ils.get_gslon();
744 nav1_gslat = ils.get_gslat();
745 nav1_elev = ils.get_gselev();
747 nav1_range = FG_ILS_DEFAULT_RANGE;
748 nav1_effective_range = nav1_range;
749 nav1_target_gs = ils.get_gsangle();
750 nav1_radial = ils.get_locheading();
751 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
752 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
753 nav1_x = ils.get_x();
754 nav1_y = ils.get_y();
755 nav1_z = ils.get_z();
756 nav1_gs_x = ils.get_gs_x();
757 nav1_gs_y = ils.get_gs_y();
758 nav1_gs_z = ils.get_gs_z();
760 #ifdef ENABLE_AUDIO_SUPPORT
761 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
762 globals->get_soundmgr()->remove( "nav1-vor-ident" );
764 FGSimpleSound *sound;
765 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
766 sound->set_volume( 0.3 );
767 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
769 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
770 globals->get_soundmgr()->remove( "nav1-dme-ident" );
772 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
773 sound->set_volume( 0.3 );
774 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
776 int offset = (int)(sg_random() * 30.0);
777 nav1_play_count = offset / 4;
778 nav1_last_time = globals->get_time_params()->get_cur_time() -
780 // cout << "offset = " << offset << " play_count = "
781 // << nav1_play_count
782 // << " nav1_last_time = " << nav1_last_time
783 // << " current time = "
784 // << globals->get_time_params()->get_cur_time() << endl;
787 // cout << "Found an ils station in range" << endl;
788 // cout << " id = " << ils.get_locident() << endl;
790 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
791 nav1_ident = nav.get_ident();
793 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
794 last_nav1_ident = nav1_ident;
795 last_nav1_vor = true;
796 nav1_trans_ident = nav.get_trans_ident();
798 nav1_has_dme = nav.get_has_dme();
800 nav1_loclon = nav.get_lon();
801 nav1_loclat = nav.get_lat();
802 nav1_elev = nav.get_elev();
803 nav1_magvar = nav.get_magvar();
804 nav1_range = nav.get_range();
805 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
806 nav1_target_gs = 0.0;
807 nav1_radial = nav1_sel_radial;
808 nav1_x = nav.get_x();
809 nav1_y = nav.get_y();
810 nav1_z = nav.get_z();
812 #ifdef ENABLE_AUDIO_SUPPORT
813 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
814 globals->get_soundmgr()->remove( "nav1-vor-ident" );
816 FGSimpleSound *sound;
817 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
818 sound->set_volume( 0.3 );
819 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
821 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
822 globals->get_soundmgr()->remove( "nav1-dme-ident" );
824 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
825 sound->set_volume( 0.3 );
826 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
828 int offset = (int)(sg_random() * 30.0);
829 nav1_play_count = offset / 4;
830 nav1_last_time = globals->get_time_params()->get_cur_time() -
832 // cout << "offset = " << offset << " play_count = "
833 // << nav1_play_count << " nav1_last_time = "
834 // << nav1_last_time << " current time = "
835 // << globals->get_time_params()->get_cur_time() << endl;
838 // cout << "Found a vor station in range" << endl;
839 // cout << " id = " << nav.get_ident() << endl;
845 nav1_trans_ident = "";
846 last_nav1_ident = "";
847 #ifdef ENABLE_AUDIO_SUPPORT
848 globals->get_soundmgr()->remove( "nav1-vor-ident" );
849 globals->get_soundmgr()->remove( "nav1-dme-ident" );
851 // cout << "not picking up vor1. :-(" << endl;
855 ////////////////////////////////////////////////////////////////////////
857 ////////////////////////////////////////////////////////////////////////
859 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
860 nav2_ident = ils.get_locident();
862 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
863 last_nav2_ident = nav2_ident;
864 last_nav2_vor = false;
865 nav2_trans_ident = ils.get_trans_ident();
867 nav2_has_dme = ils.get_has_dme();
868 nav2_has_gs = ils.get_has_gs();
870 nav2_loclon = ils.get_loclon();
871 nav2_loclat = ils.get_loclat();
872 nav2_elev = ils.get_gselev();
874 nav2_range = FG_ILS_DEFAULT_RANGE;
875 nav2_effective_range = nav2_range;
876 nav2_target_gs = ils.get_gsangle();
877 nav2_radial = ils.get_locheading();
878 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
879 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
880 nav2_x = ils.get_x();
881 nav2_y = ils.get_y();
882 nav2_z = ils.get_z();
883 nav2_gs_x = ils.get_gs_x();
884 nav2_gs_y = ils.get_gs_y();
885 nav2_gs_z = ils.get_gs_z();
887 #ifdef ENABLE_AUDIO_SUPPORT
888 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
889 globals->get_soundmgr()->remove( "nav2-vor-ident" );
891 FGSimpleSound *sound;
892 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
893 sound->set_volume( 0.3 );
894 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
896 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
897 globals->get_soundmgr()->remove( "nav2-dme-ident" );
899 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
900 sound->set_volume( 0.3 );
901 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
903 int offset = (int)(sg_random() * 30.0);
904 nav2_play_count = offset / 4;
905 nav2_last_time = globals->get_time_params()->get_cur_time() -
907 // cout << "offset = " << offset << " play_count = "
908 // << nav2_play_count << " nav2_last_time = "
909 // << nav2_last_time << " current time = "
910 // << globals->get_time_params()->get_cur_time() << endl;
913 // cout << "Found an ils station in range" << endl;
914 // cout << " id = " << ils.get_locident() << endl;
916 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
917 nav2_ident = nav.get_ident();
919 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
920 last_nav2_ident = nav2_ident;
921 last_nav2_vor = true;
922 nav2_trans_ident = nav.get_trans_ident();
924 nav2_has_dme = nav.get_has_dme();
925 nav2_has_dme = false;
926 nav2_loclon = nav.get_lon();
927 nav2_loclat = nav.get_lat();
928 nav2_elev = nav.get_elev();
929 nav2_magvar = nav.get_magvar();
930 nav2_range = nav.get_range();
931 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
932 nav2_target_gs = 0.0;
933 nav2_radial = nav2_sel_radial;
934 nav2_x = nav.get_x();
935 nav2_y = nav.get_y();
936 nav2_z = nav.get_z();
938 #ifdef ENABLE_AUDIO_SUPPORT
939 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
940 globals->get_soundmgr()->remove( "nav2-vor-ident" );
942 FGSimpleSound *sound;
943 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
944 sound->set_volume( 0.3 );
945 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
947 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
948 globals->get_soundmgr()->remove( "nav2-dme-ident" );
950 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
951 sound->set_volume( 0.3 );
952 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
954 int offset = (int)(sg_random() * 30.0);
955 nav2_play_count = offset / 4;
956 nav2_last_time = globals->get_time_params()->get_cur_time() -
958 // cout << "offset = " << offset << " play_count = "
959 // << nav2_play_count << " nav2_last_time = "
960 // << nav2_last_time << " current time = "
961 // << globals->get_time_params()->get_cur_time() << endl;
964 // cout << "Found a vor station in range" << endl;
965 // cout << " id = " << nav.get_ident() << endl;
971 nav2_trans_ident = "";
972 last_nav2_ident = "";
973 #ifdef ENABLE_AUDIO_SUPPORT
974 globals->get_soundmgr()->remove( "nav2-vor-ident" );
975 globals->get_soundmgr()->remove( "nav2-dme-ident" );
977 // cout << "not picking up vor1. :-(" << endl;
981 ////////////////////////////////////////////////////////////////////////
983 ////////////////////////////////////////////////////////////////////////
985 if ( current_ilslist->query( lon, lat, elev, dme_freq, &ils ) ) {
986 if (ils.get_has_dme()) {
988 dme_lon = ils.get_loclon();
989 dme_lat = ils.get_loclat();
990 dme_elev = ils.get_gselev();
991 dme_range = FG_ILS_DEFAULT_RANGE;
992 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
993 dme_x = ils.get_dme_x();
994 dme_y = ils.get_dme_y();
995 dme_z = ils.get_dme_z();
997 } else if ( current_navlist->query( lon, lat, elev, dme_freq, &nav ) ) {
998 if (nav.get_has_dme()) {
1000 dme_lon = nav.get_lon();
1001 dme_lat = nav.get_lat();
1002 dme_elev = nav.get_elev();
1003 dme_range = nav.get_range();
1004 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1005 dme_x = nav.get_x();
1006 dme_y = nav.get_y();
1007 dme_z = nav.get_z();
1015 ////////////////////////////////////////////////////////////////////////
1017 ////////////////////////////////////////////////////////////////////////
1019 FGMkrBeacon::fgMkrBeacType beacon_type
1020 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
1021 lat * SGD_RADIANS_TO_DEGREES, elev );
1023 outer_marker = middle_marker = inner_marker = false;
1025 if ( beacon_type == FGMkrBeacon::OUTER ) {
1026 outer_marker = true;
1027 // cout << "OUTER MARKER" << endl;
1028 #ifdef ENABLE_AUDIO_SUPPORT
1029 if ( last_beacon != FGMkrBeacon::OUTER ) {
1030 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
1031 FGSimpleSound *sound = beacon.get_outer();
1032 sound->set_volume( 0.3 );
1033 globals->get_soundmgr()->add( sound, "outer-marker" );
1035 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
1036 globals->get_soundmgr()->play_looped( "outer-marker" );
1040 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
1041 middle_marker = true;
1042 // cout << "MIDDLE MARKER" << endl;
1043 #ifdef ENABLE_AUDIO_SUPPORT
1044 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
1045 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
1046 FGSimpleSound *sound = beacon.get_middle();
1047 sound->set_volume( 0.3 );
1048 globals->get_soundmgr()->add( sound, "middle-marker" );
1050 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
1051 globals->get_soundmgr()->play_looped( "middle-marker" );
1055 } else if ( beacon_type == FGMkrBeacon::INNER ) {
1056 inner_marker = true;
1057 // cout << "INNER MARKER" << endl;
1058 #ifdef ENABLE_AUDIO_SUPPORT
1059 if ( last_beacon != FGMkrBeacon::INNER ) {
1060 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
1061 FGSimpleSound *sound = beacon.get_inner();
1062 sound->set_volume( 0.3 );
1063 globals->get_soundmgr()->add( sound, "inner-marker" );
1065 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
1066 globals->get_soundmgr()->play_looped( "inner-marker" );
1071 // cout << "no marker" << endl;
1072 #ifdef ENABLE_AUDIO_SUPPORT
1073 globals->get_soundmgr()->stop( "outer-marker" );
1074 globals->get_soundmgr()->stop( "middle-marker" );
1075 globals->get_soundmgr()->stop( "inner-marker" );
1078 last_beacon = beacon_type;
1081 ////////////////////////////////////////////////////////////////////////
1083 ////////////////////////////////////////////////////////////////////////
1085 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
1087 #if defined( _MSC_VER ) || defined(__MINGW32__)
1088 _snprintf( freq, 10, "%.0f", adf_freq );
1090 snprintf( freq, 10, "%.0f", adf_freq );
1093 adf_ident += nav.get_ident();
1094 // cout << "adf ident = " << adf_ident << endl;
1096 if ( last_adf_ident != adf_ident ) {
1097 last_adf_ident = adf_ident;
1099 adf_trans_ident = nav.get_trans_ident();
1100 adf_lon = nav.get_lon();
1101 adf_lat = nav.get_lat();
1102 adf_elev = nav.get_elev();
1103 adf_range = nav.get_range();
1104 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
1105 adf_x = nav.get_x();
1106 adf_y = nav.get_y();
1107 adf_z = nav.get_z();
1109 #ifdef ENABLE_AUDIO_SUPPORT
1110 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
1111 globals->get_soundmgr()->remove( "adf-ident" );
1113 FGSimpleSound *sound;
1114 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
1115 sound->set_volume( 0.3 );
1116 globals->get_soundmgr()->add( sound, "adf-ident" );
1118 int offset = (int)(sg_random() * 30.0);
1119 adf_play_count = offset / 4;
1120 adf_last_time = globals->get_time_params()->get_cur_time() -
1122 // cout << "offset = " << offset << " play_count = "
1123 // << adf_play_count << " adf_last_time = "
1124 // << adf_last_time << " current time = "
1125 // << globals->get_time_params()->get_cur_time() << endl;
1128 // cout << "Found an adf station in range" << endl;
1129 // cout << " id = " << nav.get_ident() << endl;
1134 adf_trans_ident = "";
1135 #ifdef ENABLE_AUDIO_SUPPORT
1136 globals->get_soundmgr()->remove( "adf-ident" );
1138 last_adf_ident = "";
1139 // cout << "not picking up adf. :-(" << endl;
1144 // return the amount of heading needle deflection, returns a value
1145 // clamped to the range of ( -10 , 10 )
1146 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1149 if ( nav1_inrange ) {
1150 r = nav1_heading - nav1_radial;
1151 // cout << "Radial = " << nav1_radial
1152 // << " Bearing = " << nav1_heading << endl;
1154 while ( r > 180.0 ) { r -= 360.0;}
1155 while ( r < -180.0 ) { r += 360.0;}
1156 if ( fabs(r) > 90.0 ) {
1157 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1163 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1164 if ( nav1_loc ) { r *= 4.0; }
1165 if ( r < -10.0 ) { r = -10.0; }
1166 if ( r > 10.0 ) { r = 10.0; }
1174 // return the amount of heading needle deflection, returns a value
1175 // clamped to the range of ( -10 , 10 )
1176 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1179 if ( nav2_inrange ) {
1180 r = nav2_heading - nav2_radial;
1181 // cout << "Radial = " << nav2_radial
1182 // << " Bearing = " << nav2_heading << endl;
1184 while (r> 180.0) r-=360.0;
1185 while (r<-180.0) r+=360.0;
1186 if ( fabs(r) > 90.0 )
1187 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1188 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1189 if ( nav2_loc ) r *= 4.0;
1190 if ( r < -10.0 ) r = -10.0;
1191 if ( r > 10.0 ) r = 10.0;
1199 // return the amount of glide slope needle deflection (.i.e. the
1200 // number of degrees we are off the glide slope * 5.0
1201 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1202 if ( nav1_inrange && nav1_has_gs ) {
1203 double x = nav1_gs_dist;
1204 double y = (fgGetDouble("/position/altitude-ft") - nav1_elev)
1206 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1207 return (nav1_target_gs - angle) * 5.0;
1214 // return the amount of glide slope needle deflection (.i.e. the
1215 // number of degrees we are off the glide slope * 5.0
1216 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1217 if ( nav2_inrange && nav2_has_gs ) {
1218 double x = nav2_gs_dist;
1219 double y = (fgGetDouble("/position/altitude-ft") - nav2_elev)
1221 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1222 return (nav2_target_gs - angle) * 5.0;
1230 * Return true if the NAV1 TO flag should be active.
1233 FGRadioStack::get_nav1_to_flag () const
1236 double offset = fabs(nav1_heading - nav1_radial);
1240 return (offset <= 90.0 || offset >= 270.0);
1248 * Return true if the NAV1 FROM flag should be active.
1251 FGRadioStack::get_nav1_from_flag () const
1254 double offset = fabs(nav1_heading - nav1_radial);
1258 return (offset > 90.0 && offset < 270.0);
1266 * Return true if the NAV2 TO flag should be active.
1269 FGRadioStack::get_nav2_to_flag () const
1272 double offset = fabs(nav2_heading - nav2_radial);
1276 return (offset <= 90.0 || offset >= 270.0);
1284 * Return true if the NAV2 FROM flag should be active.
1287 FGRadioStack::get_nav2_from_flag () const
1290 double offset = fabs(nav2_heading - nav2_radial);
1294 return (offset > 90.0 && offset < 270.0);