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 <stdio.h> // snprintf
30 #include <simgear/compiler.h>
31 #include <simgear/math/sg_random.h>
33 #include <Aircraft/aircraft.hxx>
34 #include <Navaids/ilslist.hxx>
35 #include <Navaids/mkrbeacons.hxx>
36 #include <Navaids/navlist.hxx>
37 #include <Time/FGEventMgr.hxx>
39 #include "radiostack.hxx"
44 static int nav1_play_count = 0;
45 static int nav2_play_count = 0;
46 static int adf_play_count = 0;
47 static time_t nav1_last_time = 0;
48 static time_t nav2_last_time = 0;
49 static time_t adf_last_time = 0;
52 FGRadioStack *current_radiostack;
56 * Boy, this is ugly! Make the VOR range vary by altitude difference.
58 static double kludgeRange ( double stationElev, double aircraftElev,
61 // Assume that the nominal range (usually
62 // 50nm) applies at a 5,000 ft difference.
64 double factor = ((aircraftElev*SG_METER_TO_FEET) - stationElev) / 5000.0;
65 double range = fabs(nominalRange * factor);
67 // Clamp the range to keep it sane; for
68 // now, never less than 25% or more than
69 // 500% of nominal range.
70 if (range < nominalRange/4.0) {
71 range = nominalRange/4.0;
72 } else if (range > nominalRange*5.0) {
73 range = nominalRange*5.0;
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)),
107 SGPath path( globals->get_fg_root() );
109 term.append( "Navaids/range.term" );
111 low.append( "Navaids/range.low" );
113 high.append( "Navaids/range.high" );
115 term_tbl = new SGInterpTable( term.str() );
116 low_tbl = new SGInterpTable( low.str() );
117 high_tbl = new SGInterpTable( high.str() );
118 dme_last_time.stamp();
123 FGRadioStack::~FGRadioStack()
125 unbind(); // FIXME: should be called externally
134 FGRadioStack::init ()
141 update(1); // FIXME: use dt
143 // Search radio database once per second
144 global_events.Register( "fgRadioSearch()",
145 current_radiostack, &FGRadioStack::search,
150 FGRadioStack::bind ()
153 fgTie("/radios/comm[0]/frequencies/selected-mhz", this,
154 &FGRadioStack::get_comm1_freq, &FGRadioStack::set_comm1_freq);
155 fgSetArchivable("/radios/comm[0]/frequencies/selected-mhz");
156 fgTie("/radios/comm[0]/frequencies/standby-mhz", this,
157 &FGRadioStack::get_comm1_alt_freq, &FGRadioStack::set_comm1_alt_freq);
158 fgSetArchivable("/radios/comm[0]/frequencies/standby-mhz");
159 fgTie("/radios/comm[0]/volume", this,
160 &FGRadioStack::get_comm1_vol_btn,
161 &FGRadioStack::set_comm1_vol_btn);
162 fgSetArchivable("/radios/comm[0]/volume");
163 fgTie("/radios/comm[0]/ident", this,
164 &FGRadioStack::get_comm1_ident_btn,
165 &FGRadioStack::set_comm1_ident_btn);
166 fgSetArchivable("/radios/comm[0]/ident");
168 fgTie("/radios/comm[1]/frequencies/selected-mhz", this,
169 &FGRadioStack::get_comm2_freq, &FGRadioStack::set_comm2_freq);
170 fgSetArchivable("/radios/comm[0]/frequencies/selected-mhz");
171 fgTie("/radios/comm[1]/frequencies/standby-mhz", this,
172 &FGRadioStack::get_comm2_alt_freq, &FGRadioStack::set_comm2_alt_freq);
173 fgSetArchivable("/radios/comm[0]/frequencies/standby-mhz");
174 fgTie("/radios/comm[1]/volume", this,
175 &FGRadioStack::get_comm2_vol_btn,
176 &FGRadioStack::set_comm2_vol_btn);
177 fgSetArchivable("/radios/comm[0]/volume");
178 fgTie("/radios/comm[1]/ident", this,
179 &FGRadioStack::get_comm2_ident_btn,
180 &FGRadioStack::set_comm2_ident_btn);
181 fgSetArchivable("/radios/comm[1]/ident");
183 fgTie("/radios/nav[0]/frequencies/selected-mhz", this,
184 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
185 fgSetArchivable("/radios/nav[0]/frequencies/selected-mhz");
186 fgTie("/radios/nav[0]/frequencies/standby-mhz", this,
187 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
188 fgSetArchivable("/radios/nav[0]/frequencies/standby-mhz");
189 fgTie("/radios/nav[0]/radials/selected-deg", this,
190 &FGRadioStack::get_nav1_sel_radial,
191 &FGRadioStack::set_nav1_sel_radial);
192 fgSetArchivable("/radios/nav[0]/radials/selected-deg");
193 fgTie("/radios/nav[0]/volume", this,
194 &FGRadioStack::get_nav1_vol_btn,
195 &FGRadioStack::set_nav1_vol_btn);
196 fgSetArchivable("/radios/nav[0]/volume");
197 fgTie("/radios/nav[0]/ident", this,
198 &FGRadioStack::get_nav1_ident_btn,
199 &FGRadioStack::set_nav1_ident_btn);
200 fgSetArchivable("/radios/nav[0]/ident");
203 fgTie("/radios/nav[0]/radials/actual-deg", this,
204 &FGRadioStack::get_nav1_radial);
205 fgTie("/radios/nav[0]/to-flag", this, &FGRadioStack::get_nav1_to_flag);
206 fgTie("/radios/nav[0]/from-flag", this, &FGRadioStack::get_nav1_from_flag);
207 fgTie("/radios/nav[0]/in-range", this, &FGRadioStack::get_nav1_inrange);
208 fgTie("/radios/nav[0]/heading-needle-deflection", this,
209 &FGRadioStack::get_nav1_heading_needle_deflection);
210 fgTie("/radios/nav[0]/gs-needle-deflection", this,
211 &FGRadioStack::get_nav1_gs_needle_deflection);
214 fgTie("/radios/nav[1]/frequencies/selected-mhz", this,
215 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
216 fgSetArchivable("/radios/nav[1]/frequencies/selected-mhz");
217 fgTie("/radios/nav[1]/frequencies/standby-mhz", this,
218 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
219 fgSetArchivable("/radios/nav[1]/frequencies/standby-mhz");
220 fgTie("/radios/nav[1]/radials/selected-deg", this,
221 &FGRadioStack::get_nav2_sel_radial,
222 &FGRadioStack::set_nav2_sel_radial);
223 fgSetArchivable("/radios/nav[1]/radials/selected-deg");
224 fgTie("/radios/nav[1]/volume", this,
225 &FGRadioStack::get_nav2_vol_btn,
226 &FGRadioStack::set_nav2_vol_btn);
227 fgSetArchivable("/radios/nav[1]/volume");
228 fgTie("/radios/nav[1]/ident", this,
229 &FGRadioStack::get_nav2_ident_btn,
230 &FGRadioStack::set_nav2_ident_btn);
231 fgSetArchivable("/radios/nav[1]/ident");
234 fgTie("/radios/nav[1]/radials/actual-deg", this,
235 &FGRadioStack::get_nav2_radial);
236 fgTie("/radios/nav[1]/to-flag", this, &FGRadioStack::get_nav2_to_flag);
237 fgTie("/radios/nav[1]/from-flag", this, &FGRadioStack::get_nav2_from_flag);
238 fgTie("/radios/nav[1]/in-range", this, &FGRadioStack::get_nav2_inrange);
239 fgTie("/radios/nav[1]/heading-needle-deflection", this,
240 &FGRadioStack::get_nav2_heading_needle_deflection);
241 fgTie("/radios/nav[1]/gs-needle-deflection", this,
242 &FGRadioStack::get_nav2_gs_needle_deflection);
245 fgTie("/radios/dme/frequencies/selected-khz", this,
246 &FGRadioStack::get_dme_freq, &FGRadioStack::set_dme_freq);
249 fgTie("/radios/dme/in-range", this, &FGRadioStack::get_dme_inrange);
250 fgTie("/radios/dme/distance-nm", this, &FGRadioStack::get_dme_dist);
251 fgTie("/radios/dme/speed-kt", this, &FGRadioStack::get_dme_spd);
252 fgTie("/radios/dme/ete-min", this, &FGRadioStack::get_dme_ete);
255 fgTie("/radios/adf/frequencies/selected-khz", this,
256 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
257 fgSetArchivable("/radios/adf/frequencies/selected-khz");
258 fgTie("/radios/adf/frequencies/standby-khz", this,
259 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
260 fgSetArchivable("/radios/adf/frequencies/standby-khz");
261 fgTie("/radios/adf/rotation-deg", this,
262 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
263 fgSetArchivable("/radios/adf/rotation-deg");
264 fgTie("/radios/adf/volume", this,
265 &FGRadioStack::get_adf_vol_btn,
266 &FGRadioStack::set_adf_vol_btn);
267 fgSetArchivable("/radios/adf/volume");
268 fgTie("/radios/adf/ident", this,
269 &FGRadioStack::get_adf_ident_btn,
270 &FGRadioStack::set_adf_ident_btn);
271 fgSetArchivable("/radios/adf/ident");
273 fgTie("/radios/marker-beacon/inner", this,
274 &FGRadioStack::get_inner_blink);
275 fgTie("/radios/marker-beacon/middle", this,
276 &FGRadioStack::get_middle_blink);
277 fgTie("/radios/marker-beacon/outer", this,
278 &FGRadioStack::get_outer_blink);
282 FGRadioStack::unbind ()
284 fgUntie("/radios/comm[0]/frequencies/selected-mhz");
285 fgUntie("/radios/comm[0]/frequencies/standby-mhz");
286 fgUntie("/radios/comm[0]/on");
287 fgUntie("/radios/comm[0]/ident");
289 fgUntie("/radios/comm[1]/frequencies/selected-mhz");
290 fgUntie("/radios/comm[1]/frequencies/standby-mhz");
291 fgUntie("/radios/comm[1]/on");
292 fgUntie("/radios/comm[1]/ident");
294 fgUntie("/radios/nav[0]/frequencies/selected-mhz");
295 fgUntie("/radios/nav[0]/frequencies/standby-mhz");
296 fgUntie("/radios/nav[0]/radials/actual-deg");
297 fgUntie("/radios/nav[0]/radials/selected-deg");
298 fgUntie("/radios/nav[0]/on");
299 fgUntie("/radios/nav[0]/ident");
300 fgUntie("/radios/nav[0]/to-flag");
301 fgUntie("/radios/nav[0]/from-flag");
302 fgUntie("/radios/nav[0]/in-range");
303 fgUntie("/radios/nav[0]/heading-needle-deflection");
304 fgUntie("/radios/nav[0]/gs-needle-deflection");
306 fgUntie("/radios/nav[1]/frequencies/selected-mhz");
307 fgUntie("/radios/nav[1]/frequencies/standby-mhz");
308 fgUntie("/radios/nav[1]/radials/actual-deg");
309 fgUntie("/radios/nav[1]/radials/selected-deg");
310 fgUntie("/radios/nav[1]/on");
311 fgUntie("/radios/nav[1]/ident");
312 fgUntie("/radios/nav[1]/to-flag");
313 fgUntie("/radios/nav[1]/from-flag");
314 fgUntie("/radios/nav[1]/in-range");
315 fgUntie("/radios/nav[1]/heading-needle-deflection");
316 fgUntie("/radios/nav[1]/gs-needle-deflection");
318 fgUntie("/radios/dme/frequencies/selected-khz");
321 fgUntie("/radios/dme/in-range");
322 fgUntie("/radios/dme/distance-nm");
323 fgUntie("/radios/dme/speed-kt");
324 fgUntie("/radios/dme/ete-min");
326 fgUntie("/radios/adf/frequencies/selected-khz");
327 fgUntie("/radios/adf/frequencies/standby-khz");
328 fgUntie("/radios/adf/rotation-deg");
329 fgUntie("/radios/adf/on");
330 fgUntie("/radios/adf/ident");
332 fgUntie("/radios/marker-beacon/inner");
333 fgUntie("/radios/marker-beacon/middle");
334 fgUntie("/radios/marker-beacon/outer");
338 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
339 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
340 double nominalRange )
342 // extend out actual usable range to be 1.3x the published safe range
343 const double usability_factor = 1.3;
345 // assumptions we model the standard service volume, plus
346 // ... rather than specifying a cylinder, we model a cone that
347 // contains the cylinder. Then we put an upside down cone on top
348 // to model diminishing returns at too-high altitudes.
350 // altitude difference
351 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
352 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
353 // << " station elev = " << stationElev << endl;
355 if ( nominalRange < 25.0 + SG_EPSILON ) {
356 // Standard Terminal Service Volume
357 return term_tbl->interpolate( alt ) * usability_factor;
358 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
359 // Standard Low Altitude Service Volume
360 // table is based on range of 40, scale to actual range
361 return low_tbl->interpolate( alt ) * nominalRange / 40.0
364 // Standard High Altitude Service Volume
365 // table is based on range of 130, scale to actual range
366 return high_tbl->interpolate( alt ) * nominalRange / 130.0
372 // model standard ILS service volumes as per AIM 1-1-9
373 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
374 double offsetDegrees, double distance )
376 // assumptions we model the standard service volume, plus
378 // altitude difference
379 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
380 double offset = fabs( offsetDegrees );
383 return FG_ILS_DEFAULT_RANGE;
384 } else if ( offset < 35 ) {
385 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
386 } else if ( offset < 45 ) {
387 return (45 - offset);
388 } else if ( offset > 170 ) {
389 return FG_ILS_DEFAULT_RANGE;
390 } else if ( offset > 145 ) {
391 return 10 + (offset - 145) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
392 } else if ( offset > 135 ) {
393 return (offset - 135);
400 // Update the various nav values based on position and valid tuned in navs
402 FGRadioStack::update(int dt)
404 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
405 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
406 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
410 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
414 ////////////////////////////////////////////////////////////////////////
416 ////////////////////////////////////////////////////////////////////////
419 station = Point3D( nav1_x, nav1_y, nav1_z );
420 nav1_loc_dist = aircraft.distance3D( station );
423 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
424 nav1_gs_dist = aircraft.distance3D( station );
430 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
431 nav1_loclat, nav1_loclon,
433 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
434 nav1_heading = az1 - nav1_magvar;
435 // cout << " heading = " << nav1_heading
436 // << " dist = " << nav1_dist << endl;
439 double offset = nav1_heading - nav1_radial;
440 while ( offset < -180.0 ) { offset += 360.0; }
441 while ( offset > 180.0 ) { offset -= 360.0; }
442 // cout << "ils offset = " << offset << endl;
443 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
444 nav1_loc_dist * SG_METER_TO_NM );
446 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
448 // cout << "nav1 range = " << nav1_effective_range
449 // << " (" << nav1_range << ")" << endl;
451 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
453 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
454 nav1_inrange = sg_random() <
455 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
456 (nav1_effective_range * SG_NM_TO_METER);
458 nav1_inrange = false;
462 nav1_radial = nav1_sel_radial;
465 nav1_inrange = false;
466 // cout << "not picking up vor. :-(" << endl;
469 #ifdef ENABLE_AUDIO_SUPPORT
470 if ( nav1_valid && nav1_inrange ) {
471 // play station ident via audio system if on + ident,
472 // otherwise turn it off
473 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
474 FGSimpleSound *sound;
475 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
476 sound->set_volume( nav1_vol_btn * 0.3 );
477 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
478 sound->set_volume( nav1_vol_btn * 0.3 );
479 if ( nav1_last_time <
480 globals->get_time_params()->get_cur_time() - 30 ) {
481 nav1_last_time = globals->get_time_params()->get_cur_time();
484 if ( nav1_play_count < 4 ) {
486 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
487 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
490 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
492 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
493 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
494 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
499 globals->get_soundmgr()->stop( "nav1-vor-ident" );
500 globals->get_soundmgr()->stop( "nav1-dme-ident" );
506 ////////////////////////////////////////////////////////////////////////
508 ////////////////////////////////////////////////////////////////////////
511 station = Point3D( nav2_x, nav2_y, nav2_z );
512 nav2_loc_dist = aircraft.distance3D( station );
515 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
516 nav2_gs_dist = aircraft.distance3D( station );
522 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
523 nav2_loclat, nav2_loclon,
525 nav2_heading = az1 - nav2_magvar;
526 // cout << " heading = " << nav2_heading
527 // << " dist = " << nav2_dist << endl;
530 double offset = nav2_heading - nav2_radial;
531 while ( offset < -180.0 ) { offset += 360.0; }
532 while ( offset > 180.0 ) { offset -= 360.0; }
533 // cout << "ils offset = " << offset << endl;
534 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
535 nav2_loc_dist * SG_METER_TO_NM );
537 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
539 // cout << "nav2 range = " << nav2_effective_range
540 // << " (" << nav2_range << ")" << endl;
542 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
544 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
545 nav2_inrange = sg_random() <
546 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
547 (nav2_effective_range * SG_NM_TO_METER);
549 nav2_inrange = false;
553 nav2_radial = nav2_sel_radial;
556 nav2_inrange = false;
557 // cout << "not picking up vor. :-(" << endl;
560 #ifdef ENABLE_AUDIO_SUPPORT
561 if ( nav2_valid && nav2_inrange ) {
562 // play station ident via audio system if on + ident,
563 // otherwise turn it off
564 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
565 FGSimpleSound *sound;
566 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
567 sound->set_volume( nav2_vol_btn * 0.3 );
568 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
569 sound->set_volume( nav2_vol_btn * 0.3 );
570 if ( nav2_last_time <
571 globals->get_time_params()->get_cur_time() - 30 ) {
572 nav2_last_time = globals->get_time_params()->get_cur_time();
575 if ( nav2_play_count < 4 ) {
577 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
578 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
581 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
583 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
584 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
585 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
590 globals->get_soundmgr()->stop( "nav2-vor-ident" );
591 globals->get_soundmgr()->stop( "nav2-dme-ident" );
597 ////////////////////////////////////////////////////////////////////////
599 ////////////////////////////////////////////////////////////////////////
602 station = Point3D( dme_x, dme_y, dme_z );
603 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
604 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
605 if (dme_dist < dme_effective_range * SG_NM_TO_METER) {
607 } else if (dme_dist < 2 * dme_effective_range * SG_NM_TO_METER) {
608 dme_inrange = sg_random() <
609 (2 * dme_effective_range * SG_NM_TO_METER - dme_dist) /
610 (dme_effective_range * SG_NM_TO_METER);
615 SGTimeStamp current_time;
616 station = Point3D( dme_x, dme_y, dme_z );
617 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
618 current_time.stamp();
619 long dMs = (current_time - dme_last_time) / 1000;
620 // Update every second
622 double dDist = dme_dist - dme_prev_dist;
623 dme_spd = fabs((dDist/dMs) * 3600000);
624 // FIXME: the panel should be able to
628 dme_ete = fabs((dme_dist/dme_spd) * 60.0);
629 // FIXME: the panel should be able to
633 dme_prev_dist = dme_dist;
634 dme_last_time.stamp();
644 ////////////////////////////////////////////////////////////////////////
646 ////////////////////////////////////////////////////////////////////////
649 // staightline distance
650 station = Point3D( adf_x, adf_y, adf_z );
651 adf_dist = aircraft.distance3D( station );
654 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
658 // cout << " heading = " << nav2_heading
659 // << " dist = " << nav2_dist << endl;
661 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
662 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
664 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
665 adf_inrange = sg_random() <
666 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
667 (adf_effective_range * SG_NM_TO_METER);
675 #ifdef ENABLE_AUDIO_SUPPORT
676 if ( adf_valid && adf_inrange ) {
677 // play station ident via audio system if on + ident,
678 // otherwise turn it off
679 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
680 FGSimpleSound *sound;
681 sound = globals->get_soundmgr()->find( "adf-ident" );
682 sound->set_volume( adf_vol_btn * 0.3 );
684 globals->get_time_params()->get_cur_time() - 30 ) {
685 adf_last_time = globals->get_time_params()->get_cur_time();
688 if ( adf_play_count < 4 ) {
690 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
691 globals->get_soundmgr()->play_once( "adf-ident" );
696 globals->get_soundmgr()->stop( "adf-ident" );
701 // marker beacon blinking
702 bool light_on = ( outer_blink || middle_blink || inner_blink );
706 if ( light_on && (current - blink > 400000) ) {
709 } else if ( !light_on && (current - blink > 100000) ) {
714 if ( outer_marker ) {
715 outer_blink = light_on;
720 if ( middle_marker ) {
721 middle_blink = light_on;
723 middle_blink = false;
726 if ( inner_marker ) {
727 inner_blink = light_on;
732 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
736 // Update current nav/adf radio stations based on current postition
737 void FGRadioStack::search()
739 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
741 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
742 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
743 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
745 // FIXME: the panel should handle this
746 // don't worry about overhead for now,
747 // since this is handled only periodically
748 int dme_switch_pos = fgGetInt("/radios/dme/switch-position");
749 if (dme_switch_pos == 0) {
752 } else if (dme_switch_pos == 1) {
753 if (dme_freq != nav1_freq) {
754 dme_freq = nav1_freq;
757 } else if (dme_switch_pos == 3) {
758 if (dme_freq != nav2_freq) {
759 dme_freq = nav2_freq;
767 static string last_nav1_ident = "";
768 static string last_nav2_ident = "";
769 static string last_adf_ident = "";
770 static bool last_nav1_vor = false;
771 static bool last_nav2_vor = false;
773 ////////////////////////////////////////////////////////////////////////
775 ////////////////////////////////////////////////////////////////////////
777 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
778 nav1_ident = ils.get_locident();
780 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
781 nav1_trans_ident = ils.get_trans_ident();
782 last_nav1_ident = nav1_ident;
783 last_nav1_vor = false;
785 nav1_has_dme = ils.get_has_dme();
786 nav1_has_gs = ils.get_has_gs();
788 nav1_loclon = ils.get_loclon();
789 nav1_loclat = ils.get_loclat();
790 nav1_gslon = ils.get_gslon();
791 nav1_gslat = ils.get_gslat();
792 nav1_elev = ils.get_gselev();
794 nav1_range = FG_ILS_DEFAULT_RANGE;
795 nav1_effective_range = nav1_range;
796 nav1_target_gs = ils.get_gsangle();
797 nav1_radial = ils.get_locheading();
798 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
799 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
800 nav1_x = ils.get_x();
801 nav1_y = ils.get_y();
802 nav1_z = ils.get_z();
803 nav1_gs_x = ils.get_gs_x();
804 nav1_gs_y = ils.get_gs_y();
805 nav1_gs_z = ils.get_gs_z();
807 #ifdef ENABLE_AUDIO_SUPPORT
808 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
809 globals->get_soundmgr()->remove( "nav1-vor-ident" );
811 FGSimpleSound *sound;
812 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
813 sound->set_volume( 0.3 );
814 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
816 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
817 globals->get_soundmgr()->remove( "nav1-dme-ident" );
819 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
820 sound->set_volume( 0.3 );
821 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
823 int offset = (int)(sg_random() * 30.0);
824 nav1_play_count = offset / 4;
825 nav1_last_time = globals->get_time_params()->get_cur_time() -
827 // cout << "offset = " << offset << " play_count = "
828 // << nav1_play_count
829 // << " nav1_last_time = " << nav1_last_time
830 // << " current time = "
831 // << globals->get_time_params()->get_cur_time() << endl;
834 // cout << "Found an ils station in range" << endl;
835 // cout << " id = " << ils.get_locident() << endl;
837 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
838 nav1_ident = nav.get_ident();
840 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
841 last_nav1_ident = nav1_ident;
842 last_nav1_vor = true;
843 nav1_trans_ident = nav.get_trans_ident();
845 nav1_has_dme = nav.get_has_dme();
847 nav1_loclon = nav.get_lon();
848 nav1_loclat = nav.get_lat();
849 nav1_elev = nav.get_elev();
850 nav1_magvar = nav.get_magvar();
851 nav1_range = nav.get_range();
852 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
853 nav1_target_gs = 0.0;
854 nav1_radial = nav1_sel_radial;
855 nav1_x = nav.get_x();
856 nav1_y = nav.get_y();
857 nav1_z = nav.get_z();
859 #ifdef ENABLE_AUDIO_SUPPORT
860 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
861 globals->get_soundmgr()->remove( "nav1-vor-ident" );
863 FGSimpleSound *sound;
864 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
865 sound->set_volume( 0.3 );
866 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
868 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
869 globals->get_soundmgr()->remove( "nav1-dme-ident" );
871 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
872 sound->set_volume( 0.3 );
873 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
875 int offset = (int)(sg_random() * 30.0);
876 nav1_play_count = offset / 4;
877 nav1_last_time = globals->get_time_params()->get_cur_time() -
879 // cout << "offset = " << offset << " play_count = "
880 // << nav1_play_count << " nav1_last_time = "
881 // << nav1_last_time << " current time = "
882 // << globals->get_time_params()->get_cur_time() << endl;
885 // cout << "Found a vor station in range" << endl;
886 // cout << " id = " << nav.get_ident() << endl;
892 nav1_trans_ident = "";
893 last_nav1_ident = "";
894 #ifdef ENABLE_AUDIO_SUPPORT
895 globals->get_soundmgr()->remove( "nav1-vor-ident" );
896 globals->get_soundmgr()->remove( "nav1-dme-ident" );
898 // cout << "not picking up vor1. :-(" << endl;
902 ////////////////////////////////////////////////////////////////////////
904 ////////////////////////////////////////////////////////////////////////
906 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
907 nav2_ident = ils.get_locident();
909 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
910 last_nav2_ident = nav2_ident;
911 last_nav2_vor = false;
912 nav2_trans_ident = ils.get_trans_ident();
914 nav2_has_dme = ils.get_has_dme();
915 nav2_has_gs = ils.get_has_gs();
917 nav2_loclon = ils.get_loclon();
918 nav2_loclat = ils.get_loclat();
919 nav2_elev = ils.get_gselev();
921 nav2_range = FG_ILS_DEFAULT_RANGE;
922 nav2_effective_range = nav2_range;
923 nav2_target_gs = ils.get_gsangle();
924 nav2_radial = ils.get_locheading();
925 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
926 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
927 nav2_x = ils.get_x();
928 nav2_y = ils.get_y();
929 nav2_z = ils.get_z();
930 nav2_gs_x = ils.get_gs_x();
931 nav2_gs_y = ils.get_gs_y();
932 nav2_gs_z = ils.get_gs_z();
934 #ifdef ENABLE_AUDIO_SUPPORT
935 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
936 globals->get_soundmgr()->remove( "nav2-vor-ident" );
938 FGSimpleSound *sound;
939 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
940 sound->set_volume( 0.3 );
941 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
943 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
944 globals->get_soundmgr()->remove( "nav2-dme-ident" );
946 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
947 sound->set_volume( 0.3 );
948 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
950 int offset = (int)(sg_random() * 30.0);
951 nav2_play_count = offset / 4;
952 nav2_last_time = globals->get_time_params()->get_cur_time() -
954 // cout << "offset = " << offset << " play_count = "
955 // << nav2_play_count << " nav2_last_time = "
956 // << nav2_last_time << " current time = "
957 // << globals->get_time_params()->get_cur_time() << endl;
960 // cout << "Found an ils station in range" << endl;
961 // cout << " id = " << ils.get_locident() << endl;
963 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
964 nav2_ident = nav.get_ident();
966 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
967 last_nav2_ident = nav2_ident;
968 last_nav2_vor = true;
969 nav2_trans_ident = nav.get_trans_ident();
971 nav2_has_dme = nav.get_has_dme();
972 nav2_has_dme = false;
973 nav2_loclon = nav.get_lon();
974 nav2_loclat = nav.get_lat();
975 nav2_elev = nav.get_elev();
976 nav2_magvar = nav.get_magvar();
977 nav2_range = nav.get_range();
978 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
979 nav2_target_gs = 0.0;
980 nav2_radial = nav2_sel_radial;
981 nav2_x = nav.get_x();
982 nav2_y = nav.get_y();
983 nav2_z = nav.get_z();
985 #ifdef ENABLE_AUDIO_SUPPORT
986 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
987 globals->get_soundmgr()->remove( "nav2-vor-ident" );
989 FGSimpleSound *sound;
990 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
991 sound->set_volume( 0.3 );
992 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
994 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
995 globals->get_soundmgr()->remove( "nav2-dme-ident" );
997 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
998 sound->set_volume( 0.3 );
999 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
1001 int offset = (int)(sg_random() * 30.0);
1002 nav2_play_count = offset / 4;
1003 nav2_last_time = globals->get_time_params()->get_cur_time() -
1005 // cout << "offset = " << offset << " play_count = "
1006 // << nav2_play_count << " nav2_last_time = "
1007 // << nav2_last_time << " current time = "
1008 // << globals->get_time_params()->get_cur_time() << endl;
1011 // cout << "Found a vor station in range" << endl;
1012 // cout << " id = " << nav.get_ident() << endl;
1018 nav2_trans_ident = "";
1019 last_nav2_ident = "";
1020 #ifdef ENABLE_AUDIO_SUPPORT
1021 globals->get_soundmgr()->remove( "nav2-vor-ident" );
1022 globals->get_soundmgr()->remove( "nav2-dme-ident" );
1024 // cout << "not picking up vor1. :-(" << endl;
1028 ////////////////////////////////////////////////////////////////////////
1030 ////////////////////////////////////////////////////////////////////////
1032 if ( current_ilslist->query( lon, lat, elev, dme_freq, &ils ) ) {
1033 if (ils.get_has_dme()) {
1035 dme_lon = ils.get_loclon();
1036 dme_lat = ils.get_loclat();
1037 dme_elev = ils.get_gselev();
1038 dme_range = FG_ILS_DEFAULT_RANGE;
1039 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1040 dme_x = ils.get_dme_x();
1041 dme_y = ils.get_dme_y();
1042 dme_z = ils.get_dme_z();
1044 } else if ( current_navlist->query( lon, lat, elev, dme_freq, &nav ) ) {
1045 if (nav.get_has_dme()) {
1047 dme_lon = nav.get_lon();
1048 dme_lat = nav.get_lat();
1049 dme_elev = nav.get_elev();
1050 dme_range = nav.get_range();
1051 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1052 dme_x = nav.get_x();
1053 dme_y = nav.get_y();
1054 dme_z = nav.get_z();
1062 ////////////////////////////////////////////////////////////////////////
1064 ////////////////////////////////////////////////////////////////////////
1066 FGMkrBeacon::fgMkrBeacType beacon_type
1067 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
1068 lat * SGD_RADIANS_TO_DEGREES, elev );
1070 outer_marker = middle_marker = inner_marker = false;
1072 if ( beacon_type == FGMkrBeacon::OUTER ) {
1073 outer_marker = true;
1074 // cout << "OUTER MARKER" << endl;
1075 #ifdef ENABLE_AUDIO_SUPPORT
1076 if ( last_beacon != FGMkrBeacon::OUTER ) {
1077 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
1078 FGSimpleSound *sound = beacon.get_outer();
1079 sound->set_volume( 0.3 );
1080 globals->get_soundmgr()->add( sound, "outer-marker" );
1082 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
1083 globals->get_soundmgr()->play_looped( "outer-marker" );
1087 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
1088 middle_marker = true;
1089 // cout << "MIDDLE MARKER" << endl;
1090 #ifdef ENABLE_AUDIO_SUPPORT
1091 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
1092 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
1093 FGSimpleSound *sound = beacon.get_middle();
1094 sound->set_volume( 0.3 );
1095 globals->get_soundmgr()->add( sound, "middle-marker" );
1097 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
1098 globals->get_soundmgr()->play_looped( "middle-marker" );
1102 } else if ( beacon_type == FGMkrBeacon::INNER ) {
1103 inner_marker = true;
1104 // cout << "INNER MARKER" << endl;
1105 #ifdef ENABLE_AUDIO_SUPPORT
1106 if ( last_beacon != FGMkrBeacon::INNER ) {
1107 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
1108 FGSimpleSound *sound = beacon.get_inner();
1109 sound->set_volume( 0.3 );
1110 globals->get_soundmgr()->add( sound, "inner-marker" );
1112 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
1113 globals->get_soundmgr()->play_looped( "inner-marker" );
1118 // cout << "no marker" << endl;
1119 #ifdef ENABLE_AUDIO_SUPPORT
1120 globals->get_soundmgr()->stop( "outer-marker" );
1121 globals->get_soundmgr()->stop( "middle-marker" );
1122 globals->get_soundmgr()->stop( "inner-marker" );
1125 last_beacon = beacon_type;
1128 ////////////////////////////////////////////////////////////////////////
1130 ////////////////////////////////////////////////////////////////////////
1132 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
1134 #if defined( _MSC_VER ) || defined(__MINGW32__)
1135 _snprintf( freq, 10, "%.0f", adf_freq );
1137 snprintf( freq, 10, "%.0f", adf_freq );
1140 adf_ident += nav.get_ident();
1141 // cout << "adf ident = " << adf_ident << endl;
1143 if ( last_adf_ident != adf_ident ) {
1144 last_adf_ident = adf_ident;
1146 adf_trans_ident = nav.get_trans_ident();
1147 adf_lon = nav.get_lon();
1148 adf_lat = nav.get_lat();
1149 adf_elev = nav.get_elev();
1150 adf_range = nav.get_range();
1151 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
1152 adf_x = nav.get_x();
1153 adf_y = nav.get_y();
1154 adf_z = nav.get_z();
1156 #ifdef ENABLE_AUDIO_SUPPORT
1157 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
1158 globals->get_soundmgr()->remove( "adf-ident" );
1160 FGSimpleSound *sound;
1161 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
1162 sound->set_volume( 0.3 );
1163 globals->get_soundmgr()->add( sound, "adf-ident" );
1165 int offset = (int)(sg_random() * 30.0);
1166 adf_play_count = offset / 4;
1167 adf_last_time = globals->get_time_params()->get_cur_time() -
1169 // cout << "offset = " << offset << " play_count = "
1170 // << adf_play_count << " adf_last_time = "
1171 // << adf_last_time << " current time = "
1172 // << globals->get_time_params()->get_cur_time() << endl;
1175 // cout << "Found an adf station in range" << endl;
1176 // cout << " id = " << nav.get_ident() << endl;
1181 adf_trans_ident = "";
1182 #ifdef ENABLE_AUDIO_SUPPORT
1183 globals->get_soundmgr()->remove( "adf-ident" );
1185 last_adf_ident = "";
1186 // cout << "not picking up adf. :-(" << endl;
1191 // return the amount of heading needle deflection, returns a value
1192 // clamped to the range of ( -10 , 10 )
1193 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1196 if ( nav1_inrange ) {
1197 r = nav1_heading - nav1_radial;
1198 // cout << "Radial = " << nav1_radial
1199 // << " Bearing = " << nav1_heading << endl;
1201 while ( r > 180.0 ) { r -= 360.0;}
1202 while ( r < -180.0 ) { r += 360.0;}
1203 if ( fabs(r) > 90.0 ) {
1204 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1210 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1211 if ( nav1_loc ) { r *= 4.0; }
1212 if ( r < -10.0 ) { r = -10.0; }
1213 if ( r > 10.0 ) { r = 10.0; }
1221 // return the amount of heading needle deflection, returns a value
1222 // clamped to the range of ( -10 , 10 )
1223 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1226 if ( nav2_inrange ) {
1227 r = nav2_heading - nav2_radial;
1228 // cout << "Radial = " << nav2_radial
1229 // << " Bearing = " << nav2_heading << endl;
1231 while (r> 180.0) r-=360.0;
1232 while (r<-180.0) r+=360.0;
1233 if ( fabs(r) > 90.0 )
1234 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1235 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1236 if ( nav2_loc ) r *= 4.0;
1237 if ( r < -10.0 ) r = -10.0;
1238 if ( r > 10.0 ) r = 10.0;
1246 // return the amount of glide slope needle deflection (.i.e. the
1247 // number of degrees we are off the glide slope * 5.0
1248 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1249 if ( nav1_inrange && nav1_has_gs ) {
1250 double x = nav1_gs_dist;
1251 double y = (fgGetDouble("/position/altitude-ft") - nav1_elev)
1253 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1254 return (nav1_target_gs - angle) * 5.0;
1261 // return the amount of glide slope needle deflection (.i.e. the
1262 // number of degrees we are off the glide slope * 5.0
1263 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1264 if ( nav2_inrange && nav2_has_gs ) {
1265 double x = nav2_gs_dist;
1266 double y = (fgGetDouble("/position/altitude-ft") - nav2_elev)
1268 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1269 return (nav2_target_gs - angle) * 5.0;
1277 * Return true if the NAV1 TO flag should be active.
1280 FGRadioStack::get_nav1_to_flag () const
1283 double offset = fabs(nav1_heading - nav1_radial);
1287 return (offset <= 90.0 || offset >= 270.0);
1295 * Return true if the NAV1 FROM flag should be active.
1298 FGRadioStack::get_nav1_from_flag () const
1301 double offset = fabs(nav1_heading - nav1_radial);
1305 return (offset > 90.0 && offset < 270.0);
1313 * Return true if the NAV2 TO flag should be active.
1316 FGRadioStack::get_nav2_to_flag () const
1319 double offset = fabs(nav2_heading - nav2_radial);
1323 return (offset <= 90.0 || offset >= 270.0);
1331 * Return true if the NAV2 FROM flag should be active.
1334 FGRadioStack::get_nav2_from_flag () const
1337 double offset = fabs(nav2_heading - nav2_radial);
1341 return (offset > 90.0 && offset < 270.0);