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)),
94 SGPath path( globals->get_fg_root() );
96 term.append( "Navaids/range.term" );
98 low.append( "Navaids/range.low" );
100 high.append( "Navaids/range.high" );
102 term_tbl = new SGInterpTable( term.str() );
103 low_tbl = new SGInterpTable( low.str() );
104 high_tbl = new SGInterpTable( high.str() );
105 dme_last_time.stamp();
110 FGRadioStack::~FGRadioStack()
112 unbind(); // FIXME: should be called externally
121 FGRadioStack::init ()
130 // Search radio database once per second
131 global_events.Register( "fgRadioSearch()", fgRadioSearch,
132 fgEVENT::FG_EVENT_READY, 1000);
136 FGRadioStack::bind ()
139 fgTie("/radios/nav[0]/frequencies/selected-mhz", this,
140 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
141 fgSetArchivable("/radios/nav[0]/frequencies/selected-mhz");
142 fgTie("/radios/nav[0]/frequencies/standby-mhz", this,
143 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
144 fgSetArchivable("/radios/nav[0]/frequencies/standby-mhz");
145 fgTie("/radios/nav[0]/radials/selected-deg", this,
146 &FGRadioStack::get_nav1_sel_radial,
147 &FGRadioStack::set_nav1_sel_radial);
148 fgSetArchivable("/radios/nav[0]/radials/selected-deg");
149 fgTie("/radios/nav[0]/volume", this,
150 &FGRadioStack::get_nav1_vol_btn,
151 &FGRadioStack::set_nav1_vol_btn);
152 fgSetArchivable("/radios/nav[0]/volume");
153 fgTie("/radios/nav[0]/ident", this,
154 &FGRadioStack::get_nav1_ident_btn,
155 &FGRadioStack::set_nav1_ident_btn);
156 fgSetArchivable("/radios/nav[0]/ident");
159 fgTie("/radios/nav[0]/radials/actual-deg", this,
160 &FGRadioStack::get_nav1_radial);
161 fgTie("/radios/nav[0]/to-flag", this, &FGRadioStack::get_nav1_to_flag);
162 fgTie("/radios/nav[0]/from-flag", this, &FGRadioStack::get_nav1_from_flag);
163 fgTie("/radios/nav[0]/in-range", this, &FGRadioStack::get_nav1_inrange);
164 fgTie("/radios/nav[0]/heading-needle-deflection", this,
165 &FGRadioStack::get_nav1_heading_needle_deflection);
166 fgTie("/radios/nav[0]/gs-needle-deflection", this,
167 &FGRadioStack::get_nav1_gs_needle_deflection);
170 fgTie("/radios/nav[1]/frequencies/selected-mhz", this,
171 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
172 fgSetArchivable("/radios/nav[1]/frequencies/selected-mhz");
173 fgTie("/radios/nav[1]/frequencies/standby-mhz", this,
174 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
175 fgSetArchivable("/radios/nav[1]/frequencies/standby-mhz");
176 fgTie("/radios/nav[1]/radials/selected-deg", this,
177 &FGRadioStack::get_nav2_sel_radial,
178 &FGRadioStack::set_nav2_sel_radial);
179 fgSetArchivable("/radios/nav[1]/radials/selected-deg");
180 fgTie("/radios/nav[1]/volume", this,
181 &FGRadioStack::get_nav2_vol_btn,
182 &FGRadioStack::set_nav2_vol_btn);
183 fgSetArchivable("/radios/nav[1]/volume");
184 fgTie("/radios/nav[1]/ident", this,
185 &FGRadioStack::get_nav2_ident_btn,
186 &FGRadioStack::set_nav2_ident_btn);
187 fgSetArchivable("/radios/nav[1]/ident");
190 fgTie("/radios/nav[1]/radials/actual-deg", this,
191 &FGRadioStack::get_nav2_radial);
192 fgTie("/radios/nav[1]/to-flag", this, &FGRadioStack::get_nav2_to_flag);
193 fgTie("/radios/nav[1]/from-flag", this, &FGRadioStack::get_nav2_from_flag);
194 fgTie("/radios/nav[1]/in-range", this, &FGRadioStack::get_nav2_inrange);
195 fgTie("/radios/nav[1]/heading-needle-deflection", this,
196 &FGRadioStack::get_nav2_heading_needle_deflection);
197 fgTie("/radios/nav[1]/gs-needle-deflection", this,
198 &FGRadioStack::get_nav2_gs_needle_deflection);
201 fgTie("/radios/dme/frequencies/selected-khz", this,
202 &FGRadioStack::get_dme_freq, &FGRadioStack::set_adf_freq);
205 fgTie("/radios/dme/in-range", this, &FGRadioStack::get_dme_inrange);
206 fgTie("/radios/dme/distance-nm", this, &FGRadioStack::get_dme_dist);
207 fgTie("/radios/dme/speed-kt", this, &FGRadioStack::get_dme_spd);
208 fgTie("/radios/dme/ete-min", this, &FGRadioStack::get_dme_ete);
211 fgTie("/radios/adf/frequencies/selected-khz", this,
212 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
213 fgSetArchivable("/radios/adf/frequencies/selected-khz");
214 fgTie("/radios/adf/frequencies/standby-khz", this,
215 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
216 fgSetArchivable("/radios/adf/frequencies/standby-khz");
217 fgTie("/radios/adf/rotation-deg", this,
218 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
219 fgSetArchivable("/radios/adf/rotation-deg");
220 fgTie("/radios/adf/volume", this,
221 &FGRadioStack::get_adf_vol_btn,
222 &FGRadioStack::set_adf_vol_btn);
223 fgSetArchivable("/radios/adf/volume");
224 fgTie("/radios/adf/ident", this,
225 &FGRadioStack::get_adf_ident_btn,
226 &FGRadioStack::set_adf_ident_btn);
227 fgSetArchivable("/radios/adf/ident");
229 fgTie("/radios/marker-beacon/inner", this,
230 &FGRadioStack::get_inner_blink);
231 fgTie("/radios/marker-beacon/middle", this,
232 &FGRadioStack::get_middle_blink);
233 fgTie("/radios/marker-beacon/outer", this,
234 &FGRadioStack::get_outer_blink);
238 FGRadioStack::unbind ()
240 fgUntie("/radios/nav[0]/frequencies/selected-mhz");
241 fgUntie("/radios/nav[0]/frequencies/standby-mhz");
242 fgUntie("/radios/nav[0]/radials/actual-deg");
243 fgUntie("/radios/nav[0]/radials/selected-deg");
244 fgUntie("/radios/nav[0]/on");
245 fgUntie("/radios/nav[0]/ident");
246 fgUntie("/radios/nav[0]/to-flag");
247 fgUntie("/radios/nav[0]/from-flag");
248 fgUntie("/radios/nav[0]/in-range");
249 fgUntie("/radios/nav[0]/heading-needle-deflection");
250 fgUntie("/radios/nav[0]/gs-needle-deflection");
252 fgUntie("/radios/nav[1]/frequencies/selected-mhz");
253 fgUntie("/radios/nav[1]/frequencies/standby-mhz");
254 fgUntie("/radios/nav[1]/radials/actual-deg");
255 fgUntie("/radios/nav[1]/radials/selected-deg");
256 fgUntie("/radios/nav[1]/on");
257 fgUntie("/radios/nav[1]/ident");
258 fgUntie("/radios/nav[1]/to-flag");
259 fgUntie("/radios/nav[1]/from-flag");
260 fgUntie("/radios/nav[1]/in-range");
261 fgUntie("/radios/nav[1]/heading-needle-deflection");
262 fgUntie("/radios/nav[1]/gs-needle-deflection");
264 fgUntie("/radios/dme/frequencies/selected-khz");
267 fgUntie("/radios/dme/in-range");
268 fgUntie("/radios/dme/distance-nm");
269 fgUntie("/radios/dme/speed-kt");
270 fgUntie("/radios/dme/ete-min");
272 fgUntie("/radios/adf/frequencies/selected-khz");
273 fgUntie("/radios/adf/frequencies/standby-khz");
274 fgUntie("/radios/adf/rotation-deg");
275 fgUntie("/radios/adf/on");
276 fgUntie("/radios/adf/ident");
278 fgUntie("/radios/marker-beacon/inner");
279 fgUntie("/radios/marker-beacon/middle");
280 fgUntie("/radios/marker-beacon/outer");
284 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
285 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
286 double nominalRange )
288 // extend out actual usable range to be 1.3x the published safe range
289 const double usability_factor = 1.3;
291 // assumptions we model the standard service volume, plus
292 // ... rather than specifying a cylinder, we model a cone that
293 // contains the cylinder. Then we put an upside down cone on top
294 // to model diminishing returns at too-high altitudes.
296 // altitude difference
297 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
298 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
299 // << " station elev = " << stationElev << endl;
301 if ( nominalRange < 25.0 + SG_EPSILON ) {
302 // Standard Terminal Service Volume
303 return term_tbl->interpolate( alt ) * usability_factor;
304 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
305 // Standard Low Altitude Service Volume
306 // table is based on range of 40, scale to actual range
307 return low_tbl->interpolate( alt ) * nominalRange / 40.0
310 // Standard High Altitude Service Volume
311 // table is based on range of 130, scale to actual range
312 return high_tbl->interpolate( alt ) * nominalRange / 130.0
318 // model standard ILS service volumes as per AIM 1-1-9
319 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
320 double offsetDegrees, double distance )
322 // assumptions we model the standard service volume, plus
324 // altitude difference
325 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
326 double offset = fabs( offsetDegrees );
329 return FG_ILS_DEFAULT_RANGE;
330 } else if ( offset < 35 ) {
331 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
332 } else if ( offset < 45 ) {
333 return (45 - offset);
334 } else if ( offset > 170 ) {
335 return FG_ILS_DEFAULT_RANGE;
336 } else if ( offset > 145 ) {
337 return 10 + (offset - 145) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
338 } else if ( offset > 135 ) {
339 return (offset - 135);
346 // Update the various nav values based on position and valid tuned in navs
348 FGRadioStack::update()
350 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
351 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
352 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
356 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
360 ////////////////////////////////////////////////////////////////////////
362 ////////////////////////////////////////////////////////////////////////
365 station = Point3D( nav1_x, nav1_y, nav1_z );
366 nav1_loc_dist = aircraft.distance3D( station );
369 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
370 nav1_gs_dist = aircraft.distance3D( station );
376 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
377 nav1_loclat, nav1_loclon,
379 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
380 nav1_heading = az1 - nav1_magvar;
381 // cout << " heading = " << nav1_heading
382 // << " dist = " << nav1_dist << endl;
385 double offset = nav1_heading - nav1_radial;
386 while ( offset < -180.0 ) { offset += 360.0; }
387 while ( offset > 180.0 ) { offset -= 360.0; }
388 // cout << "ils offset = " << offset << endl;
389 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
390 nav1_loc_dist * SG_METER_TO_NM );
392 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
394 // cout << "nav1 range = " << nav1_effective_range
395 // << " (" << nav1_range << ")" << endl;
397 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
399 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
400 nav1_inrange = sg_random() <
401 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
402 (nav1_effective_range * SG_NM_TO_METER);
404 nav1_inrange = false;
408 nav1_radial = nav1_sel_radial;
411 nav1_inrange = false;
412 // cout << "not picking up vor. :-(" << endl;
415 #ifdef ENABLE_AUDIO_SUPPORT
416 if ( nav1_valid && nav1_inrange ) {
417 // play station ident via audio system if on + ident,
418 // otherwise turn it off
419 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
420 FGSimpleSound *sound;
421 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
422 sound->set_volume( nav1_vol_btn * 0.3 );
423 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
424 sound->set_volume( nav1_vol_btn * 0.3 );
425 if ( nav1_last_time <
426 globals->get_time_params()->get_cur_time() - 30 ) {
427 nav1_last_time = globals->get_time_params()->get_cur_time();
430 if ( nav1_play_count < 4 ) {
432 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
433 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
436 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
438 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
439 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
440 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
445 globals->get_soundmgr()->stop( "nav1-vor-ident" );
446 globals->get_soundmgr()->stop( "nav1-dme-ident" );
452 ////////////////////////////////////////////////////////////////////////
454 ////////////////////////////////////////////////////////////////////////
457 station = Point3D( nav2_x, nav2_y, nav2_z );
458 nav2_loc_dist = aircraft.distance3D( station );
461 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
462 nav2_gs_dist = aircraft.distance3D( station );
468 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
469 nav2_loclat, nav2_loclon,
471 nav2_heading = az1 - nav2_magvar;
472 // cout << " heading = " << nav2_heading
473 // << " dist = " << nav2_dist << endl;
476 double offset = nav2_heading - nav2_radial;
477 while ( offset < -180.0 ) { offset += 360.0; }
478 while ( offset > 180.0 ) { offset -= 360.0; }
479 // cout << "ils offset = " << offset << endl;
480 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
481 nav2_loc_dist * SG_METER_TO_NM );
483 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
485 // cout << "nav2 range = " << nav2_effective_range
486 // << " (" << nav2_range << ")" << endl;
488 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
490 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
491 nav2_inrange = sg_random() <
492 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
493 (nav2_effective_range * SG_NM_TO_METER);
495 nav2_inrange = false;
499 nav2_radial = nav2_sel_radial;
502 nav2_inrange = false;
503 // cout << "not picking up vor. :-(" << endl;
506 #ifdef ENABLE_AUDIO_SUPPORT
507 if ( nav2_valid && nav2_inrange ) {
508 // play station ident via audio system if on + ident,
509 // otherwise turn it off
510 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
511 FGSimpleSound *sound;
512 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
513 sound->set_volume( nav2_vol_btn * 0.3 );
514 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
515 sound->set_volume( nav2_vol_btn * 0.3 );
516 if ( nav2_last_time <
517 globals->get_time_params()->get_cur_time() - 30 ) {
518 nav2_last_time = globals->get_time_params()->get_cur_time();
521 if ( nav2_play_count < 4 ) {
523 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
524 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
527 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
529 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
530 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
531 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
536 globals->get_soundmgr()->stop( "nav2-vor-ident" );
537 globals->get_soundmgr()->stop( "nav2-dme-ident" );
543 ////////////////////////////////////////////////////////////////////////
545 ////////////////////////////////////////////////////////////////////////
548 station = Point3D( dme_x, dme_y, dme_z );
549 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
550 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
551 if (dme_dist < dme_effective_range * SG_NM_TO_METER) {
553 } else if (dme_dist < 2 * dme_effective_range * SG_NM_TO_METER) {
554 dme_inrange = sg_random() <
555 (2 * dme_effective_range * SG_NM_TO_METER - dme_dist) /
556 (dme_effective_range * SG_NM_TO_METER);
561 SGTimeStamp current_time;
562 station = Point3D( dme_x, dme_y, dme_z );
563 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
564 current_time.stamp();
565 long dMs = (current_time - dme_last_time) / 1000;
566 // Update every second
568 double dDist = dme_dist - dme_prev_dist;
569 dme_spd = fabs((dDist/dMs) * 3600000);
570 // FIXME: the panel should be able to
574 dme_ete = fabs((dme_dist/dme_spd) * 60.0);
575 // FIXME: the panel should be able to
579 dme_prev_dist = dme_dist;
580 dme_last_time.stamp();
590 ////////////////////////////////////////////////////////////////////////
592 ////////////////////////////////////////////////////////////////////////
595 // staightline distance
596 station = Point3D( adf_x, adf_y, adf_z );
597 adf_dist = aircraft.distance3D( station );
600 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
604 // cout << " heading = " << nav2_heading
605 // << " dist = " << nav2_dist << endl;
607 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
608 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
610 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
611 adf_inrange = sg_random() <
612 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
613 (adf_effective_range * SG_NM_TO_METER);
621 #ifdef ENABLE_AUDIO_SUPPORT
622 if ( adf_valid && adf_inrange ) {
623 // play station ident via audio system if on + ident,
624 // otherwise turn it off
625 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
626 FGSimpleSound *sound;
627 sound = globals->get_soundmgr()->find( "adf-ident" );
628 sound->set_volume( adf_vol_btn * 0.3 );
630 globals->get_time_params()->get_cur_time() - 30 ) {
631 adf_last_time = globals->get_time_params()->get_cur_time();
634 if ( adf_play_count < 4 ) {
636 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
637 globals->get_soundmgr()->play_once( "adf-ident" );
642 globals->get_soundmgr()->stop( "adf-ident" );
647 // marker beacon blinking
648 bool light_on = ( outer_blink || middle_blink || inner_blink );
652 if ( light_on && (current - blink > 400000) ) {
655 } else if ( !light_on && (current - blink > 100000) ) {
660 if ( outer_marker ) {
661 outer_blink = light_on;
666 if ( middle_marker ) {
667 middle_blink = light_on;
669 middle_blink = false;
672 if ( inner_marker ) {
673 inner_blink = light_on;
678 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
682 // Update current nav/adf radio stations based on current postition
683 void FGRadioStack::search()
685 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
687 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
688 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
689 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
691 // FIXME: the panel should handle this
692 // don't worry about overhead for now,
693 // since this is handled only periodically
694 int dme_switch_pos = fgGetInt("/panel/dme/switch-position");
695 if (dme_switch_pos == 0) {
698 } else if (dme_switch_pos == 1) {
699 if (dme_freq != nav1_freq) {
700 dme_freq = nav1_freq;
703 } else if (dme_switch_pos == 3) {
704 if (dme_freq != nav2_freq) {
705 dme_freq = nav2_freq;
713 static string last_nav1_ident = "";
714 static string last_nav2_ident = "";
715 static string last_adf_ident = "";
716 static bool last_nav1_vor = false;
717 static bool last_nav2_vor = false;
720 ////////////////////////////////////////////////////////////////////////
722 ////////////////////////////////////////////////////////////////////////
724 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
725 nav1_ident = ils.get_locident();
727 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
728 nav1_trans_ident = ils.get_trans_ident();
729 last_nav1_ident = nav1_ident;
730 last_nav1_vor = false;
732 nav1_has_dme = ils.get_has_dme();
733 nav1_has_gs = ils.get_has_gs();
735 nav1_loclon = ils.get_loclon();
736 nav1_loclat = ils.get_loclat();
737 nav1_gslon = ils.get_gslon();
738 nav1_gslat = ils.get_gslat();
739 nav1_elev = ils.get_gselev();
741 nav1_range = FG_ILS_DEFAULT_RANGE;
742 nav1_effective_range = nav1_range;
743 nav1_target_gs = ils.get_gsangle();
744 nav1_radial = ils.get_locheading();
745 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
746 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
747 nav1_x = ils.get_x();
748 nav1_y = ils.get_y();
749 nav1_z = ils.get_z();
750 nav1_gs_x = ils.get_gs_x();
751 nav1_gs_y = ils.get_gs_y();
752 nav1_gs_z = ils.get_gs_z();
754 #ifdef ENABLE_AUDIO_SUPPORT
755 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
756 globals->get_soundmgr()->remove( "nav1-vor-ident" );
758 FGSimpleSound *sound;
759 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
760 sound->set_volume( 0.3 );
761 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
763 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
764 globals->get_soundmgr()->remove( "nav1-dme-ident" );
766 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
767 sound->set_volume( 0.3 );
768 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
770 int offset = (int)(sg_random() * 30.0);
771 nav1_play_count = offset / 4;
772 nav1_last_time = globals->get_time_params()->get_cur_time() -
774 // cout << "offset = " << offset << " play_count = "
775 // << nav1_play_count
776 // << " nav1_last_time = " << nav1_last_time
777 // << " current time = "
778 // << globals->get_time_params()->get_cur_time() << endl;
781 // cout << "Found an ils station in range" << endl;
782 // cout << " id = " << ils.get_locident() << endl;
784 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
785 nav1_ident = nav.get_ident();
787 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
788 last_nav1_ident = nav1_ident;
789 last_nav1_vor = true;
790 nav1_trans_ident = nav.get_trans_ident();
792 nav1_has_dme = nav.get_has_dme();
794 nav1_loclon = nav.get_lon();
795 nav1_loclat = nav.get_lat();
796 nav1_elev = nav.get_elev();
797 nav1_magvar = nav.get_magvar();
798 nav1_range = nav.get_range();
799 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
800 nav1_target_gs = 0.0;
801 nav1_radial = nav1_sel_radial;
802 nav1_x = nav.get_x();
803 nav1_y = nav.get_y();
804 nav1_z = nav.get_z();
806 #ifdef ENABLE_AUDIO_SUPPORT
807 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
808 globals->get_soundmgr()->remove( "nav1-vor-ident" );
810 FGSimpleSound *sound;
811 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
812 sound->set_volume( 0.3 );
813 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
815 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
816 globals->get_soundmgr()->remove( "nav1-dme-ident" );
818 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
819 sound->set_volume( 0.3 );
820 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
822 int offset = (int)(sg_random() * 30.0);
823 nav1_play_count = offset / 4;
824 nav1_last_time = globals->get_time_params()->get_cur_time() -
826 // cout << "offset = " << offset << " play_count = "
827 // << nav1_play_count << " nav1_last_time = "
828 // << nav1_last_time << " current time = "
829 // << globals->get_time_params()->get_cur_time() << endl;
832 // cout << "Found a vor station in range" << endl;
833 // cout << " id = " << nav.get_ident() << endl;
839 nav1_trans_ident = "";
840 last_nav1_ident = "";
841 #ifdef ENABLE_AUDIO_SUPPORT
842 globals->get_soundmgr()->remove( "nav1-vor-ident" );
843 globals->get_soundmgr()->remove( "nav1-dme-ident" );
845 // cout << "not picking up vor1. :-(" << endl;
849 ////////////////////////////////////////////////////////////////////////
851 ////////////////////////////////////////////////////////////////////////
853 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
854 nav2_ident = ils.get_locident();
856 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
857 last_nav2_ident = nav2_ident;
858 last_nav2_vor = false;
859 nav2_trans_ident = ils.get_trans_ident();
861 nav2_has_dme = ils.get_has_dme();
862 nav2_has_gs = ils.get_has_gs();
864 nav2_loclon = ils.get_loclon();
865 nav2_loclat = ils.get_loclat();
866 nav2_elev = ils.get_gselev();
868 nav2_range = FG_ILS_DEFAULT_RANGE;
869 nav2_effective_range = nav2_range;
870 nav2_target_gs = ils.get_gsangle();
871 nav2_radial = ils.get_locheading();
872 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
873 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
874 nav2_x = ils.get_x();
875 nav2_y = ils.get_y();
876 nav2_z = ils.get_z();
877 nav2_gs_x = ils.get_gs_x();
878 nav2_gs_y = ils.get_gs_y();
879 nav2_gs_z = ils.get_gs_z();
881 #ifdef ENABLE_AUDIO_SUPPORT
882 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
883 globals->get_soundmgr()->remove( "nav2-vor-ident" );
885 FGSimpleSound *sound;
886 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
887 sound->set_volume( 0.3 );
888 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
890 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
891 globals->get_soundmgr()->remove( "nav2-dme-ident" );
893 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
894 sound->set_volume( 0.3 );
895 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
897 int offset = (int)(sg_random() * 30.0);
898 nav2_play_count = offset / 4;
899 nav2_last_time = globals->get_time_params()->get_cur_time() -
901 // cout << "offset = " << offset << " play_count = "
902 // << nav2_play_count << " nav2_last_time = "
903 // << nav2_last_time << " current time = "
904 // << globals->get_time_params()->get_cur_time() << endl;
907 // cout << "Found an ils station in range" << endl;
908 // cout << " id = " << ils.get_locident() << endl;
910 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
911 nav2_ident = nav.get_ident();
913 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
914 last_nav2_ident = nav2_ident;
915 last_nav2_vor = true;
916 nav2_trans_ident = nav.get_trans_ident();
918 nav2_has_dme = nav.get_has_dme();
919 nav2_has_dme = false;
920 nav2_loclon = nav.get_lon();
921 nav2_loclat = nav.get_lat();
922 nav2_elev = nav.get_elev();
923 nav2_magvar = nav.get_magvar();
924 nav2_range = nav.get_range();
925 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
926 nav2_target_gs = 0.0;
927 nav2_radial = nav2_sel_radial;
928 nav2_x = nav.get_x();
929 nav2_y = nav.get_y();
930 nav2_z = nav.get_z();
932 #ifdef ENABLE_AUDIO_SUPPORT
933 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
934 globals->get_soundmgr()->remove( "nav2-vor-ident" );
936 FGSimpleSound *sound;
937 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
938 sound->set_volume( 0.3 );
939 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
941 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
942 globals->get_soundmgr()->remove( "nav2-dme-ident" );
944 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
945 sound->set_volume( 0.3 );
946 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
948 int offset = (int)(sg_random() * 30.0);
949 nav2_play_count = offset / 4;
950 nav2_last_time = globals->get_time_params()->get_cur_time() -
952 // cout << "offset = " << offset << " play_count = "
953 // << nav2_play_count << " nav2_last_time = "
954 // << nav2_last_time << " current time = "
955 // << globals->get_time_params()->get_cur_time() << endl;
958 // cout << "Found a vor station in range" << endl;
959 // cout << " id = " << nav.get_ident() << endl;
965 nav2_trans_ident = "";
966 last_nav2_ident = "";
967 #ifdef ENABLE_AUDIO_SUPPORT
968 globals->get_soundmgr()->remove( "nav2-vor-ident" );
969 globals->get_soundmgr()->remove( "nav2-dme-ident" );
971 // cout << "not picking up vor1. :-(" << endl;
975 ////////////////////////////////////////////////////////////////////////
977 ////////////////////////////////////////////////////////////////////////
979 if ( current_ilslist->query( lon, lat, elev, dme_freq, &ils ) ) {
980 if (ils.get_has_dme()) {
982 dme_lon = ils.get_loclon();
983 dme_lat = ils.get_loclat();
984 dme_elev = ils.get_gselev();
985 dme_range = FG_ILS_DEFAULT_RANGE;
986 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
987 dme_x = ils.get_dme_x();
988 dme_y = ils.get_dme_y();
989 dme_z = ils.get_dme_z();
991 } else if ( current_navlist->query( lon, lat, elev, dme_freq, &nav ) ) {
992 if (nav.get_has_dme()) {
994 dme_lon = nav.get_lon();
995 dme_lat = nav.get_lat();
996 dme_elev = nav.get_elev();
997 dme_range = nav.get_range();
998 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1000 dme_y = nav.get_y();
1001 dme_z = nav.get_z();
1009 ////////////////////////////////////////////////////////////////////////
1011 ////////////////////////////////////////////////////////////////////////
1013 FGMkrBeacon::fgMkrBeacType beacon_type
1014 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
1015 lat * SGD_RADIANS_TO_DEGREES, elev );
1017 outer_marker = middle_marker = inner_marker = false;
1019 if ( beacon_type == FGMkrBeacon::OUTER ) {
1020 outer_marker = true;
1021 // cout << "OUTER MARKER" << endl;
1022 #ifdef ENABLE_AUDIO_SUPPORT
1023 if ( last_beacon != FGMkrBeacon::OUTER ) {
1024 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
1025 FGSimpleSound *sound = beacon.get_outer();
1026 sound->set_volume( 0.3 );
1027 globals->get_soundmgr()->add( sound, "outer-marker" );
1029 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
1030 globals->get_soundmgr()->play_looped( "outer-marker" );
1034 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
1035 middle_marker = true;
1036 // cout << "MIDDLE MARKER" << endl;
1037 #ifdef ENABLE_AUDIO_SUPPORT
1038 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
1039 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
1040 FGSimpleSound *sound = beacon.get_middle();
1041 sound->set_volume( 0.3 );
1042 globals->get_soundmgr()->add( sound, "middle-marker" );
1044 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
1045 globals->get_soundmgr()->play_looped( "middle-marker" );
1049 } else if ( beacon_type == FGMkrBeacon::INNER ) {
1050 inner_marker = true;
1051 // cout << "INNER MARKER" << endl;
1052 #ifdef ENABLE_AUDIO_SUPPORT
1053 if ( last_beacon != FGMkrBeacon::INNER ) {
1054 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
1055 FGSimpleSound *sound = beacon.get_inner();
1056 sound->set_volume( 0.3 );
1057 globals->get_soundmgr()->add( sound, "inner-marker" );
1059 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
1060 globals->get_soundmgr()->play_looped( "inner-marker" );
1065 // cout << "no marker" << endl;
1066 #ifdef ENABLE_AUDIO_SUPPORT
1067 globals->get_soundmgr()->stop( "outer-marker" );
1068 globals->get_soundmgr()->stop( "middle-marker" );
1069 globals->get_soundmgr()->stop( "inner-marker" );
1072 last_beacon = beacon_type;
1075 ////////////////////////////////////////////////////////////////////////
1077 ////////////////////////////////////////////////////////////////////////
1079 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
1081 #if defined( _MSC_VER ) || defined(__MINGW32__)
1082 _snprintf( freq, 10, "%.0f", adf_freq );
1084 snprintf( freq, 10, "%.0f", adf_freq );
1087 adf_ident += nav.get_ident();
1088 // cout << "adf ident = " << adf_ident << endl;
1090 if ( last_adf_ident != adf_ident ) {
1091 last_adf_ident = adf_ident;
1093 adf_trans_ident = nav.get_trans_ident();
1094 adf_lon = nav.get_lon();
1095 adf_lat = nav.get_lat();
1096 adf_elev = nav.get_elev();
1097 adf_range = nav.get_range();
1098 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
1099 adf_x = nav.get_x();
1100 adf_y = nav.get_y();
1101 adf_z = nav.get_z();
1103 #ifdef ENABLE_AUDIO_SUPPORT
1104 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
1105 globals->get_soundmgr()->remove( "adf-ident" );
1107 FGSimpleSound *sound;
1108 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
1109 sound->set_volume( 0.3 );
1110 globals->get_soundmgr()->add( sound, "adf-ident" );
1112 int offset = (int)(sg_random() * 30.0);
1113 adf_play_count = offset / 4;
1114 adf_last_time = globals->get_time_params()->get_cur_time() -
1116 // cout << "offset = " << offset << " play_count = "
1117 // << adf_play_count << " adf_last_time = "
1118 // << adf_last_time << " current time = "
1119 // << globals->get_time_params()->get_cur_time() << endl;
1122 // cout << "Found an adf station in range" << endl;
1123 // cout << " id = " << nav.get_ident() << endl;
1128 adf_trans_ident = "";
1129 #ifdef ENABLE_AUDIO_SUPPORT
1130 globals->get_soundmgr()->remove( "adf-ident" );
1132 last_adf_ident = "";
1133 // cout << "not picking up adf. :-(" << endl;
1138 // return the amount of heading needle deflection, returns a value
1139 // clamped to the range of ( -10 , 10 )
1140 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1143 if ( nav1_inrange ) {
1144 r = nav1_heading - nav1_radial;
1145 // cout << "Radial = " << nav1_radial
1146 // << " Bearing = " << nav1_heading << endl;
1148 while ( r > 180.0 ) { r -= 360.0;}
1149 while ( r < -180.0 ) { r += 360.0;}
1150 if ( fabs(r) > 90.0 ) {
1151 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1157 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1158 if ( nav1_loc ) { r *= 4.0; }
1159 if ( r < -10.0 ) { r = -10.0; }
1160 if ( r > 10.0 ) { r = 10.0; }
1168 // return the amount of heading needle deflection, returns a value
1169 // clamped to the range of ( -10 , 10 )
1170 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1173 if ( nav2_inrange ) {
1174 r = nav2_heading - nav2_radial;
1175 // cout << "Radial = " << nav2_radial
1176 // << " Bearing = " << nav2_heading << endl;
1178 while (r> 180.0) r-=360.0;
1179 while (r<-180.0) r+=360.0;
1180 if ( fabs(r) > 90.0 )
1181 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1182 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1183 if ( nav2_loc ) r *= 4.0;
1184 if ( r < -10.0 ) r = -10.0;
1185 if ( r > 10.0 ) r = 10.0;
1193 // return the amount of glide slope needle deflection (.i.e. the
1194 // number of degrees we are off the glide slope * 5.0
1195 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1196 if ( nav1_inrange && nav1_has_gs ) {
1197 double x = nav1_gs_dist;
1198 double y = (fgGetDouble("/position/altitude-ft") - nav1_elev)
1200 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1201 return (nav1_target_gs - angle) * 5.0;
1208 // return the amount of glide slope needle deflection (.i.e. the
1209 // number of degrees we are off the glide slope * 5.0
1210 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1211 if ( nav2_inrange && nav2_has_gs ) {
1212 double x = nav2_gs_dist;
1213 double y = (fgGetDouble("/position/altitude-ft") - nav2_elev)
1215 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1216 return (nav2_target_gs - angle) * 5.0;
1224 * Return true if the NAV1 TO flag should be active.
1227 FGRadioStack::get_nav1_to_flag () const
1230 double offset = fabs(nav1_heading - nav1_radial);
1234 return (offset <= 90.0 || offset >= 270.0);
1242 * Return true if the NAV1 FROM flag should be active.
1245 FGRadioStack::get_nav1_from_flag () const
1248 double offset = fabs(nav1_heading - nav1_radial);
1252 return (offset > 90.0 && offset < 270.0);
1260 * Return true if the NAV2 TO flag should be active.
1263 FGRadioStack::get_nav2_to_flag () const
1266 double offset = fabs(nav2_heading - nav2_radial);
1270 return (offset <= 90.0 || offset >= 270.0);
1278 * Return true if the NAV2 FROM flag should be active.
1281 FGRadioStack::get_nav2_from_flag () const
1284 double offset = fabs(nav2_heading - nav2_radial);
1288 return (offset > 90.0 && offset < 270.0);