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 <Main/bfi.hxx>
33 #include <Navaids/ilslist.hxx>
34 #include <Navaids/mkrbeacons.hxx>
35 #include <Navaids/navlist.hxx>
36 #include <Time/event.hxx>
38 #include "radiostack.hxx"
40 static int nav1_play_count = 0;
41 static int nav2_play_count = 0;
42 static int adf_play_count = 0;
43 static time_t nav1_last_time = 0;
44 static time_t nav2_last_time = 0;
45 static time_t adf_last_time = 0;
48 FGRadioStack *current_radiostack;
52 * Boy, this is ugly! Make the VOR range vary by altitude difference.
54 static double kludgeRange ( double stationElev, double aircraftElev,
57 // Assume that the nominal range (usually
58 // 50nm) applies at a 5,000 ft difference.
60 double factor = ((aircraftElev*SG_METER_TO_FEET) - stationElev) / 5000.0;
61 double range = fabs(nominalRange * factor);
63 // Clamp the range to keep it sane; for
64 // now, never less than 25% or more than
65 // 500% of nominal range.
66 if (range < nominalRange/4.0) {
67 range = nominalRange/4.0;
68 } else if (range > nominalRange*5.0) {
69 range = nominalRange*5.0;
76 // periodic radio station search wrapper
77 static void fgRadioSearch( void ) {
78 current_radiostack->search();
82 FGRadioStack::FGRadioStack() {
88 longitudeVal = fgGetValue("/position/longitude");
89 latitudeVal = fgGetValue("/position/latitude");
90 altitudeVal = fgGetValue("/position/altitude");
95 FGRadioStack::~FGRadioStack()
97 unbind(); // FIXME: should be called externally
102 FGRadioStack::init ()
111 SGPath path( globals->get_fg_root() );
113 term.append( "Navaids/range.term" );
115 low.append( "Navaids/range.low" );
117 high.append( "Navaids/range.high" );
119 term_tbl = new SGInterpTable( term.str() );
120 low_tbl = new SGInterpTable( low.str() );
121 high_tbl = new SGInterpTable( high.str() );
123 // Search radio database once per second
124 global_events.Register( "fgRadioSearch()", fgRadioSearch,
125 fgEVENT::FG_EVENT_READY, 1000);
129 FGRadioStack::bind ()
132 fgTie("/radios/nav1/frequencies/selected", this,
133 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
134 fgTie("/radios/nav1/frequencies/standby", this,
135 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
136 fgTie("/radios/nav1/radials/selected", this,
137 &FGRadioStack::get_nav1_sel_radial,
138 &FGRadioStack::set_nav1_sel_radial);
139 fgTie("/radios/nav1/volume", this,
140 &FGRadioStack::get_nav1_vol_btn,
141 &FGRadioStack::set_nav1_vol_btn);
142 fgTie("/radios/nav1/ident", this,
143 &FGRadioStack::get_nav1_ident_btn,
144 &FGRadioStack::set_nav1_ident_btn);
147 fgTie("/radios/nav1/radials/actual", this, &FGRadioStack::get_nav1_radial);
148 fgTie("/radios/nav1/to-flag", this, &FGRadioStack::get_nav1_to_flag);
149 fgTie("/radios/nav1/from-flag", this, &FGRadioStack::get_nav1_from_flag);
150 fgTie("/radios/nav1/in-range", this, &FGRadioStack::get_nav1_inrange);
151 fgTie("/radios/nav1/dme/distance", this, &FGRadioStack::get_nav1_dme_dist);
152 fgTie("/radios/nav1/dme/in-range", this,
153 &FGRadioStack::get_nav1_dme_inrange);
154 fgTie("/radios/nav1/heading-needle-deflection", this,
155 &FGRadioStack::get_nav1_heading_needle_deflection);
156 fgTie("/radios/nav1/gs-needle-deflection", this,
157 &FGRadioStack::get_nav1_gs_needle_deflection);
160 fgTie("/radios/nav2/frequencies/selected", this,
161 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
162 fgTie("/radios/nav2/frequencies/standby", this,
163 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
164 fgTie("/radios/nav2/radials/selected", this,
165 &FGRadioStack::get_nav2_sel_radial,
166 &FGRadioStack::set_nav2_sel_radial);
167 fgTie("/radios/nav2/volume", this,
168 &FGRadioStack::get_nav2_vol_btn,
169 &FGRadioStack::set_nav2_vol_btn);
170 fgTie("/radios/nav2/ident", this,
171 &FGRadioStack::get_nav2_ident_btn,
172 &FGRadioStack::set_nav2_ident_btn);
175 fgTie("/radios/nav2/radials/actual", this, &FGRadioStack::get_nav2_radial);
176 fgTie("/radios/nav2/to-flag", this, &FGRadioStack::get_nav2_to_flag);
177 fgTie("/radios/nav2/from-flag", this, &FGRadioStack::get_nav2_from_flag);
178 fgTie("/radios/nav2/in-range", this, &FGRadioStack::get_nav2_inrange);
179 fgTie("/radios/nav2/dme/distance", this, &FGRadioStack::get_nav2_dme_dist);
180 fgTie("/radios/nav2/dme/in-range", this,
181 &FGRadioStack::get_nav2_dme_inrange);
182 fgTie("/radios/nav2/heading-needle-deflection", this,
183 &FGRadioStack::get_nav2_heading_needle_deflection);
184 fgTie("/radios/nav2/gs-needle-deflection", this,
185 &FGRadioStack::get_nav2_gs_needle_deflection);
188 fgTie("/radios/adf/frequencies/selected", this,
189 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
190 fgTie("/radios/adf/frequencies/standby", this,
191 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
192 fgTie("/radios/adf/rotation", this,
193 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
194 fgTie("/radios/adf/volume", this,
195 &FGRadioStack::get_adf_vol_btn,
196 &FGRadioStack::set_adf_vol_btn);
197 fgTie("/radios/adf/ident", this,
198 &FGRadioStack::get_adf_ident_btn,
199 &FGRadioStack::set_adf_ident_btn);
201 fgTie("/radios/marker-beacon/inner", this,
202 &FGRadioStack::get_inner_blink);
203 fgTie("/radios/marker-beacon/middle", this,
204 &FGRadioStack::get_middle_blink);
205 fgTie("/radios/marker-beacon/outer", this,
206 &FGRadioStack::get_outer_blink);
210 FGRadioStack::unbind ()
212 fgUntie("/radios/nav1/frequencies/selected");
213 fgUntie("/radios/nav1/frequencies/standby");
214 fgUntie("/radios/nav1/radials/actual");
215 fgUntie("/radios/nav1/radials/selected");
216 fgUntie("/radios/nav1/on");
217 fgUntie("/radios/nav1/ident");
218 fgUntie("/radios/nav1/to-flag");
219 fgUntie("/radios/nav1/from-flag");
220 fgUntie("/radios/nav1/in-range");
221 fgUntie("/radios/nav1/dme/distance");
222 fgUntie("/radios/nav1/dme/in-range");
223 fgUntie("/radios/nav1/heading-needle-deflection");
224 fgUntie("/radios/nav1/gs-needle-deflection");
226 fgUntie("/radios/nav2/frequencies/selected");
227 fgUntie("/radios/nav2/frequencies/standby");
228 fgUntie("/radios/nav2/radials/actual");
229 fgUntie("/radios/nav2/radials/selected");
230 fgUntie("/radios/nav2/on");
231 fgUntie("/radios/nav2/ident");
232 fgUntie("/radios/nav2/to-flag");
233 fgUntie("/radios/nav2/from-flag");
234 fgUntie("/radios/nav2/in-range");
235 fgUntie("/radios/nav2/dme/distance");
236 fgUntie("/radios/nav2/dme/in-range");
237 fgUntie("/radios/nav2/heading-needle-deflection");
238 fgUntie("/radios/nav2/gs-needle-deflection");
240 fgUntie("/radios/adf/frequencies/selected");
241 fgUntie("/radios/adf/frequencies/standby");
242 fgUntie("/radios/adf/rotation");
243 fgUntie("/radios/adf/on");
244 fgUntie("/radios/adf/ident");
246 fgUntie("/radios/marker-beacon/inner");
247 fgUntie("/radios/marker-beacon/middle");
248 fgUntie("/radios/marker-beacon/outer");
252 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
253 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
254 double nominalRange )
256 // extend out actual usable range to be 1.3x the published safe range
257 const double usability_factor = 1.3;
259 // assumptions we model the standard service volume, plus
260 // ... rather than specifying a cylinder, we model a cone that
261 // contains the cylinder. Then we put an upside down cone on top
262 // to model diminishing returns at too-high altitudes.
264 // altitude difference
265 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
266 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
267 // << " station elev = " << stationElev << endl;
269 if ( nominalRange < 25.0 + SG_EPSILON ) {
270 // Standard Terminal Service Volume
271 return term_tbl->interpolate( alt ) * usability_factor;
272 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
273 // Standard Low Altitude Service Volume
274 // table is based on range of 40, scale to actual range
275 return low_tbl->interpolate( alt ) * nominalRange / 40.0
278 // Standard High Altitude Service Volume
279 // table is based on range of 130, scale to actual range
280 return high_tbl->interpolate( alt ) * nominalRange / 130.0
286 // model standard ILS service volumes as per AIM 1-1-9
287 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
288 double offsetDegrees, double distance )
290 // assumptions we model the standard service volume, plus
292 // altitude difference
293 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
294 double offset = fabs( offsetDegrees );
297 return FG_ILS_DEFAULT_RANGE;
298 } else if ( offset < 35 ) {
299 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
300 } else if ( offset < 45 ) {
301 return (45 - offset);
308 // Update the various nav values based on position and valid tuned in navs
310 FGRadioStack::update()
312 double lon = longitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
313 double lat = latitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
314 double elev = altitudeVal->getDoubleValue() * SG_FEET_TO_METER;
318 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
323 station = Point3D( nav1_x, nav1_y, nav1_z );
324 nav1_loc_dist = aircraft.distance3D( station );
326 if ( nav1_has_dme ) {
327 // staightline distance
328 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
329 nav1_dme_dist = aircraft.distance3D( station );
335 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
336 nav1_gs_dist = aircraft.distance3D( station );
342 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
343 nav1_loclat, nav1_loclon,
345 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
346 nav1_heading = az1 - nav1_magvar;
347 // cout << " heading = " << nav1_heading
348 // << " dist = " << nav1_dist << endl;
351 double offset = nav1_heading - nav1_radial;
352 while ( offset < -180.0 ) { offset += 360.0; }
353 while ( offset > 180.0 ) { offset -= 360.0; }
354 // cout << "ils offset = " << offset << endl;
355 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
356 nav1_loc_dist * SG_METER_TO_NM );
358 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
360 // cout << "nav1 range = " << nav1_effective_range
361 // << " (" << nav1_range << ")" << endl;
363 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
365 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
366 nav1_inrange = sg_random() <
367 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
368 (nav1_effective_range * SG_NM_TO_METER);
370 nav1_inrange = false;
374 nav1_radial = nav1_sel_radial;
377 nav1_inrange = false;
379 // cout << "not picking up vor. :-(" << endl;
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" );
417 station = Point3D( nav2_x, nav2_y, nav2_z );
418 nav2_loc_dist = aircraft.distance3D( station );
420 if ( nav2_has_dme ) {
421 // staightline distance
422 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
423 nav2_dme_dist = aircraft.distance3D( station );
429 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
430 nav2_gs_dist = aircraft.distance3D( station );
436 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
437 nav2_loclat, nav2_loclon,
439 nav2_heading = az1 - nav2_magvar;
440 // cout << " heading = " << nav2_heading
441 // << " dist = " << nav2_dist << endl;
444 double offset = nav2_heading - nav2_radial;
445 while ( offset < -180.0 ) { offset += 360.0; }
446 while ( offset > 180.0 ) { offset -= 360.0; }
447 // cout << "ils offset = " << offset << endl;
448 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
449 nav2_loc_dist * SG_METER_TO_NM );
451 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
453 // cout << "nav2 range = " << nav2_effective_range
454 // << " (" << nav2_range << ")" << endl;
456 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
458 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
459 nav2_inrange = sg_random() <
460 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
461 (nav2_effective_range * SG_NM_TO_METER);
463 nav2_inrange = false;
467 nav2_radial = nav2_sel_radial;
470 nav2_inrange = false;
472 // cout << "not picking up vor. :-(" << endl;
475 if ( nav2_valid && nav2_inrange ) {
476 // play station ident via audio system if on + ident,
477 // otherwise turn it off
478 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
479 FGSimpleSound *sound;
480 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
481 sound->set_volume( nav2_vol_btn * 0.3 );
482 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
483 sound->set_volume( nav2_vol_btn * 0.3 );
484 if ( nav2_last_time <
485 globals->get_time_params()->get_cur_time() - 30 ) {
486 nav2_last_time = globals->get_time_params()->get_cur_time();
489 if ( nav2_play_count < 4 ) {
491 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
492 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
495 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
497 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
498 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
499 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
504 globals->get_soundmgr()->stop( "nav2-vor-ident" );
505 globals->get_soundmgr()->stop( "nav2-dme-ident" );
511 // staightline distance
512 station = Point3D( adf_x, adf_y, adf_z );
513 adf_dist = aircraft.distance3D( station );
516 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
520 // cout << " heading = " << nav2_heading
521 // << " dist = " << nav2_dist << endl;
523 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
524 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
526 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
527 adf_inrange = sg_random() <
528 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
529 (adf_effective_range * SG_NM_TO_METER);
537 if ( adf_valid && adf_inrange ) {
538 // play station ident via audio system if on + ident,
539 // otherwise turn it off
540 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
541 FGSimpleSound *sound;
542 sound = globals->get_soundmgr()->find( "adf-ident" );
543 sound->set_volume( adf_vol_btn * 0.3 );
545 globals->get_time_params()->get_cur_time() - 30 ) {
546 adf_last_time = globals->get_time_params()->get_cur_time();
549 if ( adf_play_count < 4 ) {
551 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
552 globals->get_soundmgr()->play_once( "adf-ident" );
557 globals->get_soundmgr()->stop( "adf-ident" );
561 // marker beacon blinking
562 bool light_on = ( outer_blink || middle_blink || inner_blink );
566 if ( light_on && (current - blink > 400000) ) {
569 } else if ( !light_on && (current - blink > 100000) ) {
574 if ( outer_marker ) {
575 outer_blink = light_on;
580 if ( middle_marker ) {
581 middle_blink = light_on;
583 middle_blink = false;
586 if ( inner_marker ) {
587 inner_blink = light_on;
592 cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
596 // Update current nav/adf radio stations based on current postition
597 void FGRadioStack::search()
599 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
601 double lon = longitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
602 double lat = latitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
603 double elev = altitudeVal->getDoubleValue() * SG_FEET_TO_METER;
609 static string last_nav1_ident = "";
610 static string last_nav2_ident = "";
611 static string last_adf_ident = "";
612 static bool last_nav1_vor = false;
613 static bool last_nav2_vor = false;
614 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
615 nav1_ident = ils.get_locident();
617 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
618 nav1_trans_ident = ils.get_trans_ident();
619 last_nav1_ident = nav1_ident;
620 last_nav1_vor = false;
622 nav1_has_dme = ils.get_has_dme();
623 nav1_has_gs = ils.get_has_gs();
625 nav1_loclon = ils.get_loclon();
626 nav1_loclat = ils.get_loclat();
627 nav1_gslon = ils.get_gslon();
628 nav1_gslat = ils.get_gslat();
629 nav1_dmelon = ils.get_dmelon();
630 nav1_dmelat = ils.get_dmelat();
631 nav1_elev = ils.get_gselev();
633 nav1_range = FG_ILS_DEFAULT_RANGE;
634 nav1_effective_range = nav1_range;
635 nav1_target_gs = ils.get_gsangle();
636 nav1_radial = ils.get_locheading();
637 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
638 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
639 nav1_x = ils.get_x();
640 nav1_y = ils.get_y();
641 nav1_z = ils.get_z();
642 nav1_gs_x = ils.get_gs_x();
643 nav1_gs_y = ils.get_gs_y();
644 nav1_gs_z = ils.get_gs_z();
645 nav1_dme_x = ils.get_dme_x();
646 nav1_dme_y = ils.get_dme_y();
647 nav1_dme_z = ils.get_dme_z();
649 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
650 globals->get_soundmgr()->remove( "nav1-vor-ident" );
652 FGSimpleSound *sound;
653 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
654 sound->set_volume( 0.3 );
655 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
657 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
658 globals->get_soundmgr()->remove( "nav1-dme-ident" );
660 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
661 sound->set_volume( 0.3 );
662 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
664 int offset = (int)(sg_random() * 30.0);
665 nav1_play_count = offset / 4;
666 nav1_last_time = globals->get_time_params()->get_cur_time() -
668 // cout << "offset = " << offset << " play_count = "
669 // << nav1_play_count
670 // << " nav1_last_time = " << nav1_last_time
671 // << " current time = "
672 // << globals->get_time_params()->get_cur_time() << endl;
674 // cout << "Found an ils station in range" << endl;
675 // cout << " id = " << ils.get_locident() << endl;
677 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
678 nav1_ident = nav.get_ident();
680 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
681 last_nav1_ident = nav1_ident;
682 last_nav1_vor = true;
683 nav1_trans_ident = nav.get_trans_ident();
685 nav1_has_dme = nav.get_has_dme();
687 nav1_loclon = nav.get_lon();
688 nav1_loclat = nav.get_lat();
689 nav1_elev = nav.get_elev();
690 nav1_magvar = nav.get_magvar();
691 nav1_range = nav.get_range();
692 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
693 nav1_target_gs = 0.0;
694 nav1_radial = nav1_sel_radial;
695 nav1_x = nav1_dme_x = nav.get_x();
696 nav1_y = nav1_dme_y = nav.get_y();
697 nav1_z = nav1_dme_z = nav.get_z();
699 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
700 globals->get_soundmgr()->remove( "nav1-vor-ident" );
702 FGSimpleSound *sound;
703 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
704 sound->set_volume( 0.3 );
705 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
707 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
708 globals->get_soundmgr()->remove( "nav1-dme-ident" );
710 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
711 sound->set_volume( 0.3 );
712 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
714 int offset = (int)(sg_random() * 30.0);
715 nav1_play_count = offset / 4;
716 nav1_last_time = globals->get_time_params()->get_cur_time() -
718 // cout << "offset = " << offset << " play_count = "
719 // << nav1_play_count << " nav1_last_time = "
720 // << nav1_last_time << " current time = "
721 // << globals->get_time_params()->get_cur_time() << endl;
723 // cout << "Found a vor station in range" << endl;
724 // cout << " id = " << nav.get_ident() << endl;
731 nav1_trans_ident = "";
732 last_nav1_ident = "";
733 globals->get_soundmgr()->remove( "nav1-vor-ident" );
734 globals->get_soundmgr()->remove( "nav1-dme-ident" );
735 // cout << "not picking up vor1. :-(" << endl;
738 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
739 nav2_ident = ils.get_locident();
741 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
742 last_nav2_ident = nav2_ident;
743 last_nav2_vor = false;
744 nav2_trans_ident = ils.get_trans_ident();
746 nav2_has_dme = ils.get_has_dme();
747 nav2_has_gs = ils.get_has_gs();
749 nav2_loclon = ils.get_loclon();
750 nav2_loclat = ils.get_loclat();
751 nav2_elev = ils.get_gselev();
753 nav2_range = FG_ILS_DEFAULT_RANGE;
754 nav2_effective_range = nav2_range;
755 nav2_target_gs = ils.get_gsangle();
756 nav2_radial = ils.get_locheading();
757 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
758 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
759 nav2_x = ils.get_x();
760 nav2_y = ils.get_y();
761 nav2_z = ils.get_z();
762 nav2_gs_x = ils.get_gs_x();
763 nav2_gs_y = ils.get_gs_y();
764 nav2_gs_z = ils.get_gs_z();
765 nav2_dme_x = ils.get_dme_x();
766 nav2_dme_y = ils.get_dme_y();
767 nav2_dme_z = ils.get_dme_z();
769 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
770 globals->get_soundmgr()->remove( "nav2-vor-ident" );
772 FGSimpleSound *sound;
773 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
774 sound->set_volume( 0.3 );
775 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
777 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
778 globals->get_soundmgr()->remove( "nav2-dme-ident" );
780 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
781 sound->set_volume( 0.3 );
782 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
784 int offset = (int)(sg_random() * 30.0);
785 nav2_play_count = offset / 4;
786 nav2_last_time = globals->get_time_params()->get_cur_time() -
788 // cout << "offset = " << offset << " play_count = "
789 // << nav2_play_count << " nav2_last_time = "
790 // << nav2_last_time << " current time = "
791 // << globals->get_time_params()->get_cur_time() << endl;
793 // cout << "Found an ils station in range" << endl;
794 // cout << " id = " << ils.get_locident() << endl;
796 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
797 nav2_ident = nav.get_ident();
799 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
800 last_nav2_ident = nav2_ident;
801 last_nav2_vor = true;
802 nav2_trans_ident = nav.get_trans_ident();
804 nav2_has_dme = nav.get_has_dme();
805 nav2_has_dme = false;
806 nav2_loclon = nav.get_lon();
807 nav2_loclat = nav.get_lat();
808 nav2_elev = nav.get_elev();
809 nav2_magvar = nav.get_magvar();
810 nav2_range = nav.get_range();
811 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
812 nav2_target_gs = 0.0;
813 nav2_radial = nav2_sel_radial;
814 nav2_x = nav2_dme_x = nav.get_x();
815 nav2_y = nav2_dme_y = nav.get_y();
816 nav2_z = nav2_dme_z = nav.get_z();
818 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
819 globals->get_soundmgr()->remove( "nav2-vor-ident" );
821 FGSimpleSound *sound;
822 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
823 sound->set_volume( 0.3 );
824 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
826 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
827 globals->get_soundmgr()->remove( "nav2-dme-ident" );
829 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
830 sound->set_volume( 0.3 );
831 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
833 int offset = (int)(sg_random() * 30.0);
834 nav2_play_count = offset / 4;
835 nav2_last_time = globals->get_time_params()->get_cur_time() -
837 // cout << "offset = " << offset << " play_count = "
838 // << nav2_play_count << " nav2_last_time = "
839 // << nav2_last_time << " current time = "
840 // << globals->get_time_params()->get_cur_time() << endl;
842 // cout << "Found a vor station in range" << endl;
843 // cout << " id = " << nav.get_ident() << endl;
850 nav2_trans_ident = "";
851 last_nav2_ident = "";
852 globals->get_soundmgr()->remove( "nav2-vor-ident" );
853 globals->get_soundmgr()->remove( "nav2-dme-ident" );
854 // cout << "not picking up vor1. :-(" << endl;
857 FGMkrBeacon::fgMkrBeacType beacon_type
858 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
859 lat * SGD_RADIANS_TO_DEGREES, elev );
861 outer_marker = middle_marker = inner_marker = false;
863 if ( beacon_type == FGMkrBeacon::OUTER ) {
865 // cout << "OUTER MARKER" << endl;
866 if ( last_beacon != FGMkrBeacon::OUTER ) {
867 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
868 FGSimpleSound *sound = beacon.get_outer();
869 sound->set_volume( 0.3 );
870 globals->get_soundmgr()->add( sound, "outer-marker" );
872 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
873 globals->get_soundmgr()->play_looped( "outer-marker" );
876 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
877 middle_marker = true;
878 // cout << "MIDDLE MARKER" << endl;
879 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
880 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
881 FGSimpleSound *sound = beacon.get_middle();
882 sound->set_volume( 0.3 );
883 globals->get_soundmgr()->add( sound, "middle-marker" );
885 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
886 globals->get_soundmgr()->play_looped( "middle-marker" );
889 } else if ( beacon_type == FGMkrBeacon::INNER ) {
891 // cout << "INNER MARKER" << endl;
892 if ( last_beacon != FGMkrBeacon::INNER ) {
893 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
894 FGSimpleSound *sound = beacon.get_inner();
895 sound->set_volume( 0.3 );
896 globals->get_soundmgr()->add( sound, "inner-marker" );
898 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
899 globals->get_soundmgr()->play_looped( "inner-marker" );
903 // cout << "no marker" << endl;
904 globals->get_soundmgr()->stop( "outer-marker" );
905 globals->get_soundmgr()->stop( "middle-marker" );
906 globals->get_soundmgr()->stop( "inner-marker" );
908 last_beacon = beacon_type;
911 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
913 #if defined( _MSC_VER )
914 _snprintf( freq, 10, "%.0f", adf_freq );
916 snprintf( freq, 10, "%.0f", adf_freq );
919 adf_ident += nav.get_ident();
920 // cout << "adf ident = " << adf_ident << endl;
922 if ( last_adf_ident != adf_ident ) {
923 last_adf_ident = adf_ident;
925 adf_trans_ident = nav.get_trans_ident();
926 adf_lon = nav.get_lon();
927 adf_lat = nav.get_lat();
928 adf_elev = nav.get_elev();
929 adf_range = nav.get_range();
930 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
935 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
936 globals->get_soundmgr()->remove( "adf-ident" );
938 FGSimpleSound *sound;
939 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
940 sound->set_volume( 0.3 );
941 globals->get_soundmgr()->add( sound, "adf-ident" );
943 int offset = (int)(sg_random() * 30.0);
944 adf_play_count = offset / 4;
945 adf_last_time = globals->get_time_params()->get_cur_time() -
947 // cout << "offset = " << offset << " play_count = "
948 // << adf_play_count << " adf_last_time = "
949 // << adf_last_time << " current time = "
950 // << globals->get_time_params()->get_cur_time() << endl;
952 // cout << "Found an adf station in range" << endl;
953 // cout << " id = " << nav.get_ident() << endl;
958 adf_trans_ident = "";
959 globals->get_soundmgr()->remove( "adf-ident" );
961 // cout << "not picking up adf. :-(" << endl;
966 // return the amount of heading needle deflection, returns a value
967 // clamped to the range of ( -10 , 10 )
968 double FGRadioStack::get_nav1_heading_needle_deflection() const {
971 if ( nav1_inrange ) {
972 r = nav1_heading - nav1_radial;
973 // cout << "Radial = " << nav1_radial
974 // << " Bearing = " << nav1_heading << endl;
976 while ( r > 180.0 ) { r -= 360.0;}
977 while ( r < -180.0 ) { r += 360.0;}
978 if ( fabs(r) > 90.0 ) {
979 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
985 // According to Robin Peel, the ILS is 4x more sensitive than a vor
986 if ( nav1_loc ) { r *= 4.0; }
987 if ( r < -10.0 ) { r = -10.0; }
988 if ( r > 10.0 ) { r = 10.0; }
996 // return the amount of heading needle deflection, returns a value
997 // clamped to the range of ( -10 , 10 )
998 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1001 if ( nav2_inrange ) {
1002 r = nav2_heading - nav2_radial;
1003 // cout << "Radial = " << nav2_radial
1004 // << " Bearing = " << nav2_heading << endl;
1006 while (r> 180.0) r-=360.0;
1007 while (r<-180.0) r+=360.0;
1008 if ( fabs(r) > 90.0 )
1009 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1010 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1011 if ( nav2_loc ) r *= 4.0;
1012 if ( r < -10.0 ) r = -10.0;
1013 if ( r > 10.0 ) r = 10.0;
1021 // return the amount of glide slope needle deflection (.i.e. the
1022 // number of degrees we are off the glide slope * 5.0
1023 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1024 if ( nav1_inrange && nav1_has_gs ) {
1025 double x = nav1_gs_dist;
1026 double y = (FGBFI::getAltitude() - nav1_elev) * SG_FEET_TO_METER;
1027 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1028 return (nav1_target_gs - angle) * 5.0;
1035 // return the amount of glide slope needle deflection (.i.e. the
1036 // number of degrees we are off the glide slope * 5.0
1037 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1038 if ( nav2_inrange && nav2_has_gs ) {
1039 double x = nav2_gs_dist;
1040 double y = (FGBFI::getAltitude() - nav2_elev) * SG_FEET_TO_METER;
1041 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1042 return (nav2_target_gs - angle) * 5.0;
1050 * Return true if the NAV1 TO flag should be active.
1053 FGRadioStack::get_nav1_to_flag () const
1056 double offset = fabs(nav1_heading - nav1_radial);
1060 return (offset <= 90.0 || offset >= 270.0);
1068 * Return true if the NAV1 FROM flag should be active.
1071 FGRadioStack::get_nav1_from_flag () const
1074 double offset = fabs(nav1_heading - nav1_radial);
1078 return (offset > 90.0 && offset < 270.0);
1086 * Return true if the NAV2 TO flag should be active.
1089 FGRadioStack::get_nav2_to_flag () const
1092 double offset = fabs(nav2_heading - nav2_radial);
1096 return (offset <= 90.0 || offset >= 270.0);
1104 * Return true if the NAV2 FROM flag should be active.
1107 FGRadioStack::get_nav2_from_flag () const
1110 double offset = fabs(nav2_heading - nav2_radial);
1114 return (offset > 90.0 && offset < 270.0);