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() {
87 longitudeVal = fgGetValue("/position/longitude");
88 latitudeVal = fgGetValue("/position/latitude");
89 altitudeVal = fgGetValue("/position/altitude");
94 FGRadioStack::~FGRadioStack()
96 unbind(); // FIXME: should be called externally
101 FGRadioStack::init ()
110 SGPath path( globals->get_fg_root() );
112 term.append( "Navaids/range.term" );
114 low.append( "Navaids/range.low" );
116 high.append( "Navaids/range.high" );
118 term_tbl = new SGInterpTable( term.str() );
119 low_tbl = new SGInterpTable( low.str() );
120 high_tbl = new SGInterpTable( high.str() );
122 // Search radio database once per second
123 global_events.Register( "fgRadioSearch()", fgRadioSearch,
124 fgEVENT::FG_EVENT_READY, 1000);
128 FGRadioStack::bind ()
131 fgTie("/radios/nav1/frequencies/selected", this,
132 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
133 fgTie("/radios/nav1/frequencies/standby", this,
134 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
135 fgTie("/radios/nav1/radials/selected", this,
136 &FGRadioStack::get_nav1_sel_radial,
137 &FGRadioStack::set_nav1_sel_radial);
138 fgTie("/radios/nav1/volume", this,
139 &FGRadioStack::get_nav1_vol_btn,
140 &FGRadioStack::set_nav1_vol_btn);
141 fgTie("/radios/nav1/ident", this,
142 &FGRadioStack::get_nav1_ident_btn,
143 &FGRadioStack::set_nav1_ident_btn);
146 fgTie("/radios/nav1/radials/actual", this, &FGRadioStack::get_nav1_radial);
147 fgTie("/radios/nav1/to-flag", this, &FGRadioStack::get_nav1_to_flag);
148 fgTie("/radios/nav1/from-flag", this, &FGRadioStack::get_nav1_from_flag);
149 fgTie("/radios/nav1/in-range", this, &FGRadioStack::get_nav1_inrange);
150 fgTie("/radios/nav1/dme/distance", this, &FGRadioStack::get_nav1_dme_dist);
151 fgTie("/radios/nav1/dme/in-range", this,
152 &FGRadioStack::get_nav1_dme_inrange);
153 fgTie("/radios/nav1/heading-needle-deflection", this,
154 &FGRadioStack::get_nav1_heading_needle_deflection);
155 fgTie("/radios/nav1/gs-needle-deflection", this,
156 &FGRadioStack::get_nav1_gs_needle_deflection);
159 fgTie("/radios/nav2/frequencies/selected", this,
160 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
161 fgTie("/radios/nav2/frequencies/standby", this,
162 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
163 fgTie("/radios/nav2/radials/selected", this,
164 &FGRadioStack::get_nav2_sel_radial,
165 &FGRadioStack::set_nav2_sel_radial);
166 fgTie("/radios/nav2/volume", this,
167 &FGRadioStack::get_nav2_vol_btn,
168 &FGRadioStack::set_nav2_vol_btn);
169 fgTie("/radios/nav2/ident", this,
170 &FGRadioStack::get_nav2_ident_btn,
171 &FGRadioStack::set_nav2_ident_btn);
174 fgTie("/radios/nav2/radials/actual", this, &FGRadioStack::get_nav2_radial);
175 fgTie("/radios/nav2/to-flag", this, &FGRadioStack::get_nav2_to_flag);
176 fgTie("/radios/nav2/from-flag", this, &FGRadioStack::get_nav2_from_flag);
177 fgTie("/radios/nav2/in-range", this, &FGRadioStack::get_nav2_inrange);
178 fgTie("/radios/nav2/dme/distance", this, &FGRadioStack::get_nav2_dme_dist);
179 fgTie("/radios/nav2/dme/in-range", this,
180 &FGRadioStack::get_nav2_dme_inrange);
181 fgTie("/radios/nav2/heading-needle-deflection", this,
182 &FGRadioStack::get_nav2_heading_needle_deflection);
183 fgTie("/radios/nav2/gs-needle-deflection", this,
184 &FGRadioStack::get_nav2_gs_needle_deflection);
187 fgTie("/radios/adf/frequencies/selected", this,
188 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
189 fgTie("/radios/adf/frequencies/standby", this,
190 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
191 fgTie("/radios/adf/rotation", this,
192 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
193 fgTie("/radios/adf/volume", this,
194 &FGRadioStack::get_adf_vol_btn,
195 &FGRadioStack::set_adf_vol_btn);
196 fgTie("/radios/adf/ident", this,
197 &FGRadioStack::get_adf_ident_btn,
198 &FGRadioStack::set_adf_ident_btn);
200 fgTie("/radios/marker-beacon/inner", this,
201 &FGRadioStack::get_inner_blink);
202 fgTie("/radios/marker-beacon/middle", this,
203 &FGRadioStack::get_middle_blink);
204 fgTie("/radios/marker-beacon/outer", this,
205 &FGRadioStack::get_outer_blink);
209 FGRadioStack::unbind ()
211 fgUntie("/radios/nav1/frequencies/selected");
212 fgUntie("/radios/nav1/frequencies/standby");
213 fgUntie("/radios/nav1/radials/actual");
214 fgUntie("/radios/nav1/radials/selected");
215 fgUntie("/radios/nav1/on");
216 fgUntie("/radios/nav1/ident");
217 fgUntie("/radios/nav1/to-flag");
218 fgUntie("/radios/nav1/from-flag");
219 fgUntie("/radios/nav1/in-range");
220 fgUntie("/radios/nav1/dme/distance");
221 fgUntie("/radios/nav1/dme/in-range");
222 fgUntie("/radios/nav1/heading-needle-deflection");
223 fgUntie("/radios/nav1/gs-needle-deflection");
225 fgUntie("/radios/nav2/frequencies/selected");
226 fgUntie("/radios/nav2/frequencies/standby");
227 fgUntie("/radios/nav2/radials/actual");
228 fgUntie("/radios/nav2/radials/selected");
229 fgUntie("/radios/nav2/on");
230 fgUntie("/radios/nav2/ident");
231 fgUntie("/radios/nav2/to-flag");
232 fgUntie("/radios/nav2/from-flag");
233 fgUntie("/radios/nav2/in-range");
234 fgUntie("/radios/nav2/dme/distance");
235 fgUntie("/radios/nav2/dme/in-range");
236 fgUntie("/radios/nav2/heading-needle-deflection");
237 fgUntie("/radios/nav2/gs-needle-deflection");
239 fgUntie("/radios/adf/frequencies/selected");
240 fgUntie("/radios/adf/frequencies/standby");
241 fgUntie("/radios/adf/rotation");
242 fgUntie("/radios/adf/on");
243 fgUntie("/radios/adf/ident");
245 fgUntie("/radios/marker-beacon/inner");
246 fgUntie("/radios/marker-beacon/middle");
247 fgUntie("/radios/marker-beacon/outer");
251 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
252 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
253 double nominalRange )
255 // extend out actual usable range to be 1.3x the published safe range
256 const double usability_factor = 1.3;
258 // assumptions we model the standard service volume, plus
259 // ... rather than specifying a cylinder, we model a cone that
260 // contains the cylinder. Then we put an upside down cone on top
261 // to model diminishing returns at too-high altitudes.
263 // altitude difference
264 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
265 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
266 // << " station elev = " << stationElev << endl;
268 if ( nominalRange < 25.0 + SG_EPSILON ) {
269 // Standard Terminal Service Volume
270 return term_tbl->interpolate( alt ) * usability_factor;
271 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
272 // Standard Low Altitude Service Volume
273 // table is based on range of 40, scale to actual range
274 return low_tbl->interpolate( alt ) * nominalRange / 40.0
277 // Standard High Altitude Service Volume
278 // table is based on range of 130, scale to actual range
279 return high_tbl->interpolate( alt ) * nominalRange / 130.0
285 // model standard ILS service volumes as per AIM 1-1-9
286 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
287 double offsetDegrees, double distance )
289 // assumptions we model the standard service volume, plus
291 // altitude difference
292 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
293 double offset = fabs( offsetDegrees );
296 return FG_ILS_DEFAULT_RANGE;
297 } else if ( offset < 35 ) {
298 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
299 } else if ( offset < 45 ) {
300 return (45 - offset);
307 // Update the various nav values based on position and valid tuned in navs
309 FGRadioStack::update()
311 double lon = longitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
312 double lat = latitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
313 double elev = altitudeVal->getDoubleValue() * SG_FEET_TO_METER;
317 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
322 station = Point3D( nav1_x, nav1_y, nav1_z );
323 nav1_loc_dist = aircraft.distance3D( station );
325 if ( nav1_has_dme ) {
326 // staightline distance
327 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
328 nav1_dme_dist = aircraft.distance3D( station );
334 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
335 nav1_gs_dist = aircraft.distance3D( station );
341 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
342 nav1_loclat, nav1_loclon,
344 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
345 nav1_heading = az1 - nav1_magvar;
346 // cout << " heading = " << nav1_heading
347 // << " dist = " << nav1_dist << endl;
350 double offset = nav1_heading - nav1_radial;
351 while ( offset < -180.0 ) { offset += 360.0; }
352 while ( offset > 180.0 ) { offset -= 360.0; }
353 // cout << "ils offset = " << offset << endl;
354 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
355 nav1_loc_dist * SG_METER_TO_NM );
357 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
359 // cout << "nav1 range = " << nav1_effective_range
360 // << " (" << nav1_range << ")" << endl;
362 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
364 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
365 nav1_inrange = sg_random() <
366 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
367 (nav1_effective_range * SG_NM_TO_METER);
369 nav1_inrange = false;
373 nav1_radial = nav1_sel_radial;
376 nav1_inrange = false;
378 // cout << "not picking up vor. :-(" << endl;
381 #ifdef ENABLE_AUDIO_SUPPORT
382 if ( nav1_valid && nav1_inrange ) {
383 // play station ident via audio system if on + ident,
384 // otherwise turn it off
385 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
386 FGSimpleSound *sound;
387 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
388 sound->set_volume( nav1_vol_btn * 0.3 );
389 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
390 sound->set_volume( nav1_vol_btn * 0.3 );
391 if ( nav1_last_time <
392 globals->get_time_params()->get_cur_time() - 30 ) {
393 nav1_last_time = globals->get_time_params()->get_cur_time();
396 if ( nav1_play_count < 4 ) {
398 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
399 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
402 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
404 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
405 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
406 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
411 globals->get_soundmgr()->stop( "nav1-vor-ident" );
412 globals->get_soundmgr()->stop( "nav1-dme-ident" );
418 station = Point3D( nav2_x, nav2_y, nav2_z );
419 nav2_loc_dist = aircraft.distance3D( station );
421 if ( nav2_has_dme ) {
422 // staightline distance
423 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
424 nav2_dme_dist = aircraft.distance3D( station );
430 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
431 nav2_gs_dist = aircraft.distance3D( station );
437 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
438 nav2_loclat, nav2_loclon,
440 nav2_heading = az1 - nav2_magvar;
441 // cout << " heading = " << nav2_heading
442 // << " dist = " << nav2_dist << endl;
445 double offset = nav2_heading - nav2_radial;
446 while ( offset < -180.0 ) { offset += 360.0; }
447 while ( offset > 180.0 ) { offset -= 360.0; }
448 // cout << "ils offset = " << offset << endl;
449 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
450 nav2_loc_dist * SG_METER_TO_NM );
452 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
454 // cout << "nav2 range = " << nav2_effective_range
455 // << " (" << nav2_range << ")" << endl;
457 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
459 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
460 nav2_inrange = sg_random() <
461 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
462 (nav2_effective_range * SG_NM_TO_METER);
464 nav2_inrange = false;
468 nav2_radial = nav2_sel_radial;
471 nav2_inrange = false;
473 // cout << "not picking up vor. :-(" << endl;
476 #ifdef ENABLE_AUDIO_SUPPORT
477 if ( nav2_valid && nav2_inrange ) {
478 // play station ident via audio system if on + ident,
479 // otherwise turn it off
480 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
481 FGSimpleSound *sound;
482 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
483 sound->set_volume( nav2_vol_btn * 0.3 );
484 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
485 sound->set_volume( nav2_vol_btn * 0.3 );
486 if ( nav2_last_time <
487 globals->get_time_params()->get_cur_time() - 30 ) {
488 nav2_last_time = globals->get_time_params()->get_cur_time();
491 if ( nav2_play_count < 4 ) {
493 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
494 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
497 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
499 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
500 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
501 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
506 globals->get_soundmgr()->stop( "nav2-vor-ident" );
507 globals->get_soundmgr()->stop( "nav2-dme-ident" );
514 // staightline distance
515 station = Point3D( adf_x, adf_y, adf_z );
516 adf_dist = aircraft.distance3D( station );
519 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
523 // cout << " heading = " << nav2_heading
524 // << " dist = " << nav2_dist << endl;
526 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
527 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
529 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
530 adf_inrange = sg_random() <
531 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
532 (adf_effective_range * SG_NM_TO_METER);
540 #ifdef ENABLE_AUDIO_SUPPORT
541 if ( adf_valid && adf_inrange ) {
542 // play station ident via audio system if on + ident,
543 // otherwise turn it off
544 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
545 FGSimpleSound *sound;
546 sound = globals->get_soundmgr()->find( "adf-ident" );
547 sound->set_volume( adf_vol_btn * 0.3 );
549 globals->get_time_params()->get_cur_time() - 30 ) {
550 adf_last_time = globals->get_time_params()->get_cur_time();
553 if ( adf_play_count < 4 ) {
555 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
556 globals->get_soundmgr()->play_once( "adf-ident" );
561 globals->get_soundmgr()->stop( "adf-ident" );
566 // marker beacon blinking
567 bool light_on = ( outer_blink || middle_blink || inner_blink );
571 if ( light_on && (current - blink > 400000) ) {
574 } else if ( !light_on && (current - blink > 100000) ) {
579 if ( outer_marker ) {
580 outer_blink = light_on;
585 if ( middle_marker ) {
586 middle_blink = light_on;
588 middle_blink = false;
591 if ( inner_marker ) {
592 inner_blink = light_on;
597 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
601 // Update current nav/adf radio stations based on current postition
602 void FGRadioStack::search()
604 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
606 double lon = longitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
607 double lat = latitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
608 double elev = altitudeVal->getDoubleValue() * SG_FEET_TO_METER;
614 static string last_nav1_ident = "";
615 static string last_nav2_ident = "";
616 static string last_adf_ident = "";
617 static bool last_nav1_vor = false;
618 static bool last_nav2_vor = false;
619 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
620 nav1_ident = ils.get_locident();
622 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
623 nav1_trans_ident = ils.get_trans_ident();
624 last_nav1_ident = nav1_ident;
625 last_nav1_vor = false;
627 nav1_has_dme = ils.get_has_dme();
628 nav1_has_gs = ils.get_has_gs();
630 nav1_loclon = ils.get_loclon();
631 nav1_loclat = ils.get_loclat();
632 nav1_gslon = ils.get_gslon();
633 nav1_gslat = ils.get_gslat();
634 nav1_dmelon = ils.get_dmelon();
635 nav1_dmelat = ils.get_dmelat();
636 nav1_elev = ils.get_gselev();
638 nav1_range = FG_ILS_DEFAULT_RANGE;
639 nav1_effective_range = nav1_range;
640 nav1_target_gs = ils.get_gsangle();
641 nav1_radial = ils.get_locheading();
642 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
643 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
644 nav1_x = ils.get_x();
645 nav1_y = ils.get_y();
646 nav1_z = ils.get_z();
647 nav1_gs_x = ils.get_gs_x();
648 nav1_gs_y = ils.get_gs_y();
649 nav1_gs_z = ils.get_gs_z();
650 nav1_dme_x = ils.get_dme_x();
651 nav1_dme_y = ils.get_dme_y();
652 nav1_dme_z = ils.get_dme_z();
654 #ifdef ENABLE_AUDIO_SUPPORT
655 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
656 globals->get_soundmgr()->remove( "nav1-vor-ident" );
658 FGSimpleSound *sound;
659 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
660 sound->set_volume( 0.3 );
661 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
663 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
664 globals->get_soundmgr()->remove( "nav1-dme-ident" );
666 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
667 sound->set_volume( 0.3 );
668 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
670 int offset = (int)(sg_random() * 30.0);
671 nav1_play_count = offset / 4;
672 nav1_last_time = globals->get_time_params()->get_cur_time() -
674 // cout << "offset = " << offset << " play_count = "
675 // << nav1_play_count
676 // << " nav1_last_time = " << nav1_last_time
677 // << " current time = "
678 // << globals->get_time_params()->get_cur_time() << endl;
681 // cout << "Found an ils station in range" << endl;
682 // cout << " id = " << ils.get_locident() << endl;
684 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
685 nav1_ident = nav.get_ident();
687 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
688 last_nav1_ident = nav1_ident;
689 last_nav1_vor = true;
690 nav1_trans_ident = nav.get_trans_ident();
692 nav1_has_dme = nav.get_has_dme();
694 nav1_loclon = nav.get_lon();
695 nav1_loclat = nav.get_lat();
696 nav1_elev = nav.get_elev();
697 nav1_magvar = nav.get_magvar();
698 nav1_range = nav.get_range();
699 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
700 nav1_target_gs = 0.0;
701 nav1_radial = nav1_sel_radial;
702 nav1_x = nav1_dme_x = nav.get_x();
703 nav1_y = nav1_dme_y = nav.get_y();
704 nav1_z = nav1_dme_z = nav.get_z();
706 #ifdef ENABLE_AUDIO_SUPPORT
707 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
708 globals->get_soundmgr()->remove( "nav1-vor-ident" );
710 FGSimpleSound *sound;
711 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
712 sound->set_volume( 0.3 );
713 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
715 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
716 globals->get_soundmgr()->remove( "nav1-dme-ident" );
718 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
719 sound->set_volume( 0.3 );
720 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
722 int offset = (int)(sg_random() * 30.0);
723 nav1_play_count = offset / 4;
724 nav1_last_time = globals->get_time_params()->get_cur_time() -
726 // cout << "offset = " << offset << " play_count = "
727 // << nav1_play_count << " nav1_last_time = "
728 // << nav1_last_time << " current time = "
729 // << globals->get_time_params()->get_cur_time() << endl;
732 // cout << "Found a vor station in range" << endl;
733 // cout << " id = " << nav.get_ident() << endl;
740 nav1_trans_ident = "";
741 last_nav1_ident = "";
742 #ifdef ENABLE_AUDIO_SUPPORT
743 globals->get_soundmgr()->remove( "nav1-vor-ident" );
744 globals->get_soundmgr()->remove( "nav1-dme-ident" );
746 // cout << "not picking up vor1. :-(" << endl;
749 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
750 nav2_ident = ils.get_locident();
752 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
753 last_nav2_ident = nav2_ident;
754 last_nav2_vor = false;
755 nav2_trans_ident = ils.get_trans_ident();
757 nav2_has_dme = ils.get_has_dme();
758 nav2_has_gs = ils.get_has_gs();
760 nav2_loclon = ils.get_loclon();
761 nav2_loclat = ils.get_loclat();
762 nav2_elev = ils.get_gselev();
764 nav2_range = FG_ILS_DEFAULT_RANGE;
765 nav2_effective_range = nav2_range;
766 nav2_target_gs = ils.get_gsangle();
767 nav2_radial = ils.get_locheading();
768 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
769 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
770 nav2_x = ils.get_x();
771 nav2_y = ils.get_y();
772 nav2_z = ils.get_z();
773 nav2_gs_x = ils.get_gs_x();
774 nav2_gs_y = ils.get_gs_y();
775 nav2_gs_z = ils.get_gs_z();
776 nav2_dme_x = ils.get_dme_x();
777 nav2_dme_y = ils.get_dme_y();
778 nav2_dme_z = ils.get_dme_z();
780 #ifdef ENABLE_AUDIO_SUPPORT
781 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
782 globals->get_soundmgr()->remove( "nav2-vor-ident" );
784 FGSimpleSound *sound;
785 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
786 sound->set_volume( 0.3 );
787 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
789 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
790 globals->get_soundmgr()->remove( "nav2-dme-ident" );
792 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
793 sound->set_volume( 0.3 );
794 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
796 int offset = (int)(sg_random() * 30.0);
797 nav2_play_count = offset / 4;
798 nav2_last_time = globals->get_time_params()->get_cur_time() -
800 // cout << "offset = " << offset << " play_count = "
801 // << nav2_play_count << " nav2_last_time = "
802 // << nav2_last_time << " current time = "
803 // << globals->get_time_params()->get_cur_time() << endl;
806 // cout << "Found an ils station in range" << endl;
807 // cout << " id = " << ils.get_locident() << endl;
809 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
810 nav2_ident = nav.get_ident();
812 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
813 last_nav2_ident = nav2_ident;
814 last_nav2_vor = true;
815 nav2_trans_ident = nav.get_trans_ident();
817 nav2_has_dme = nav.get_has_dme();
818 nav2_has_dme = false;
819 nav2_loclon = nav.get_lon();
820 nav2_loclat = nav.get_lat();
821 nav2_elev = nav.get_elev();
822 nav2_magvar = nav.get_magvar();
823 nav2_range = nav.get_range();
824 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
825 nav2_target_gs = 0.0;
826 nav2_radial = nav2_sel_radial;
827 nav2_x = nav2_dme_x = nav.get_x();
828 nav2_y = nav2_dme_y = nav.get_y();
829 nav2_z = nav2_dme_z = nav.get_z();
831 #ifdef ENABLE_AUDIO_SUPPORT
832 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
833 globals->get_soundmgr()->remove( "nav2-vor-ident" );
835 FGSimpleSound *sound;
836 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
837 sound->set_volume( 0.3 );
838 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
840 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
841 globals->get_soundmgr()->remove( "nav2-dme-ident" );
843 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
844 sound->set_volume( 0.3 );
845 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
847 int offset = (int)(sg_random() * 30.0);
848 nav2_play_count = offset / 4;
849 nav2_last_time = globals->get_time_params()->get_cur_time() -
851 // cout << "offset = " << offset << " play_count = "
852 // << nav2_play_count << " nav2_last_time = "
853 // << nav2_last_time << " current time = "
854 // << globals->get_time_params()->get_cur_time() << endl;
857 // cout << "Found a vor station in range" << endl;
858 // cout << " id = " << nav.get_ident() << endl;
865 nav2_trans_ident = "";
866 last_nav2_ident = "";
867 #ifdef ENABLE_AUDIO_SUPPORT
868 globals->get_soundmgr()->remove( "nav2-vor-ident" );
869 globals->get_soundmgr()->remove( "nav2-dme-ident" );
871 // cout << "not picking up vor1. :-(" << endl;
874 FGMkrBeacon::fgMkrBeacType beacon_type
875 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
876 lat * SGD_RADIANS_TO_DEGREES, elev );
878 outer_marker = middle_marker = inner_marker = false;
880 if ( beacon_type == FGMkrBeacon::OUTER ) {
882 // cout << "OUTER MARKER" << endl;
883 #ifdef ENABLE_AUDIO_SUPPORT
884 if ( last_beacon != FGMkrBeacon::OUTER ) {
885 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
886 FGSimpleSound *sound = beacon.get_outer();
887 sound->set_volume( 0.3 );
888 globals->get_soundmgr()->add( sound, "outer-marker" );
890 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
891 globals->get_soundmgr()->play_looped( "outer-marker" );
895 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
896 middle_marker = true;
897 // cout << "MIDDLE MARKER" << endl;
898 #ifdef ENABLE_AUDIO_SUPPORT
899 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
900 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
901 FGSimpleSound *sound = beacon.get_middle();
902 sound->set_volume( 0.3 );
903 globals->get_soundmgr()->add( sound, "middle-marker" );
905 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
906 globals->get_soundmgr()->play_looped( "middle-marker" );
910 } else if ( beacon_type == FGMkrBeacon::INNER ) {
912 // cout << "INNER MARKER" << endl;
913 #ifdef ENABLE_AUDIO_SUPPORT
914 if ( last_beacon != FGMkrBeacon::INNER ) {
915 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
916 FGSimpleSound *sound = beacon.get_inner();
917 sound->set_volume( 0.3 );
918 globals->get_soundmgr()->add( sound, "inner-marker" );
920 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
921 globals->get_soundmgr()->play_looped( "inner-marker" );
926 // cout << "no marker" << endl;
927 #ifdef ENABLE_AUDIO_SUPPORT
928 globals->get_soundmgr()->stop( "outer-marker" );
929 globals->get_soundmgr()->stop( "middle-marker" );
930 globals->get_soundmgr()->stop( "inner-marker" );
933 last_beacon = beacon_type;
936 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
938 #if defined( _MSC_VER )
939 _snprintf( freq, 10, "%.0f", adf_freq );
941 snprintf( freq, 10, "%.0f", adf_freq );
944 adf_ident += nav.get_ident();
945 // cout << "adf ident = " << adf_ident << endl;
947 if ( last_adf_ident != adf_ident ) {
948 last_adf_ident = adf_ident;
950 adf_trans_ident = nav.get_trans_ident();
951 adf_lon = nav.get_lon();
952 adf_lat = nav.get_lat();
953 adf_elev = nav.get_elev();
954 adf_range = nav.get_range();
955 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
960 #ifdef ENABLE_AUDIO_SUPPORT
961 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
962 globals->get_soundmgr()->remove( "adf-ident" );
964 FGSimpleSound *sound;
965 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
966 sound->set_volume( 0.3 );
967 globals->get_soundmgr()->add( sound, "adf-ident" );
969 int offset = (int)(sg_random() * 30.0);
970 adf_play_count = offset / 4;
971 adf_last_time = globals->get_time_params()->get_cur_time() -
973 // cout << "offset = " << offset << " play_count = "
974 // << adf_play_count << " adf_last_time = "
975 // << adf_last_time << " current time = "
976 // << globals->get_time_params()->get_cur_time() << endl;
979 // cout << "Found an adf station in range" << endl;
980 // cout << " id = " << nav.get_ident() << endl;
985 adf_trans_ident = "";
986 #ifdef ENABLE_AUDIO_SUPPORT
987 globals->get_soundmgr()->remove( "adf-ident" );
990 // cout << "not picking up adf. :-(" << endl;
995 // return the amount of heading needle deflection, returns a value
996 // clamped to the range of ( -10 , 10 )
997 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1000 if ( nav1_inrange ) {
1001 r = nav1_heading - nav1_radial;
1002 // cout << "Radial = " << nav1_radial
1003 // << " Bearing = " << nav1_heading << endl;
1005 while ( r > 180.0 ) { r -= 360.0;}
1006 while ( r < -180.0 ) { r += 360.0;}
1007 if ( fabs(r) > 90.0 ) {
1008 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1014 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1015 if ( nav1_loc ) { r *= 4.0; }
1016 if ( r < -10.0 ) { r = -10.0; }
1017 if ( r > 10.0 ) { r = 10.0; }
1025 // return the amount of heading needle deflection, returns a value
1026 // clamped to the range of ( -10 , 10 )
1027 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1030 if ( nav2_inrange ) {
1031 r = nav2_heading - nav2_radial;
1032 // cout << "Radial = " << nav2_radial
1033 // << " Bearing = " << nav2_heading << endl;
1035 while (r> 180.0) r-=360.0;
1036 while (r<-180.0) r+=360.0;
1037 if ( fabs(r) > 90.0 )
1038 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1039 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1040 if ( nav2_loc ) r *= 4.0;
1041 if ( r < -10.0 ) r = -10.0;
1042 if ( r > 10.0 ) r = 10.0;
1050 // return the amount of glide slope needle deflection (.i.e. the
1051 // number of degrees we are off the glide slope * 5.0
1052 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1053 if ( nav1_inrange && nav1_has_gs ) {
1054 double x = nav1_gs_dist;
1055 double y = (fgGetDouble("/position/altitude") - nav1_elev)
1057 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1058 return (nav1_target_gs - angle) * 5.0;
1065 // return the amount of glide slope needle deflection (.i.e. the
1066 // number of degrees we are off the glide slope * 5.0
1067 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1068 if ( nav2_inrange && nav2_has_gs ) {
1069 double x = nav2_gs_dist;
1070 double y = (fgGetDouble("/position/altitude") - nav2_elev)
1072 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1073 return (nav2_target_gs - angle) * 5.0;
1081 * Return true if the NAV1 TO flag should be active.
1084 FGRadioStack::get_nav1_to_flag () const
1087 double offset = fabs(nav1_heading - nav1_radial);
1091 return (offset <= 90.0 || offset >= 270.0);
1099 * Return true if the NAV1 FROM flag should be active.
1102 FGRadioStack::get_nav1_from_flag () const
1105 double offset = fabs(nav1_heading - nav1_radial);
1109 return (offset > 90.0 && offset < 270.0);
1117 * Return true if the NAV2 TO flag should be active.
1120 FGRadioStack::get_nav2_to_flag () const
1123 double offset = fabs(nav2_heading - nav2_radial);
1127 return (offset <= 90.0 || offset >= 270.0);
1135 * Return true if the NAV2 FROM flag should be active.
1138 FGRadioStack::get_nav2_from_flag () const
1141 double offset = fabs(nav2_heading - nav2_radial);
1145 return (offset > 90.0 && offset < 270.0);