1 // FGTower - a class to provide tower control at towered airports.
3 // Written by David Luff, started March 2002.
5 // Copyright (C) 2002 David C. Luff - david.luff@nottingham.ac.uk
6 // Copyright (C) 2008 Daniyar Atadjanov (ground clearance, gear check, weather, etc.)
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
27 # include <strings.h> // bcopy()
29 # include <string.h> // MSVC doesn't have strings.h
36 #include <simgear/debug/logstream.hxx>
37 #include <simgear/math/sg_geodesy.hxx>
38 #include <simgear/math/sg_random.h>
39 #include <simgear/misc/sg_path.hxx>
41 #include <Main/globals.hxx>
42 #include <Airports/runways.hxx>
46 #include "ATCutils.hxx"
47 #include "ATCDialog.hxx"
48 #include "commlist.hxx"
49 #include "AILocalTraffic.hxx"
56 TowerPlaneRec::TowerPlaneRec() :
59 clearedToLineUp(false),
60 clearedToTakeOff(false),
61 holdShortReported(false),
62 lineUpReported(false),
63 downwindReported(false),
64 longFinalReported(false),
65 longFinalAcknowledged(false),
67 finalAcknowledged(false),
68 rwyVacatedReported(false),
69 rwyVacatedAcknowledged(false),
70 goAroundReported(false),
71 instructedToGoAround(false),
74 vfrArrivalReported(false),
75 vfrArrivalAcknowledged(false),
78 landingType(AIP_LT_UNKNOWN),
80 gearUpReported(false),
83 plane.callsign = "UNKNOWN";
86 TowerPlaneRec::TowerPlaneRec(const PlaneRec& p) :
89 clearedToLineUp(false),
90 clearedToTakeOff(false),
91 holdShortReported(false),
92 lineUpReported(false),
93 downwindReported(false),
94 longFinalReported(false),
95 longFinalAcknowledged(false),
97 finalAcknowledged(false),
98 rwyVacatedReported(false),
99 rwyVacatedAcknowledged(false),
100 goAroundReported(false),
101 instructedToGoAround(false),
104 vfrArrivalReported(false),
105 vfrArrivalAcknowledged(false),
108 landingType(AIP_LT_UNKNOWN),
110 gearUpReported(false),
116 TowerPlaneRec::TowerPlaneRec(const Point3D& pt) :
118 clearedToLand(false),
119 clearedToLineUp(false),
120 clearedToTakeOff(false),
121 holdShortReported(false),
122 lineUpReported(false),
123 downwindReported(false),
124 longFinalReported(false),
125 longFinalAcknowledged(false),
126 finalReported(false),
127 finalAcknowledged(false),
128 rwyVacatedReported(false),
129 rwyVacatedAcknowledged(false),
130 goAroundReported(false),
131 instructedToGoAround(false),
134 vfrArrivalReported(false),
135 vfrArrivalAcknowledged(false),
138 landingType(AIP_LT_UNKNOWN),
140 gearUpReported(false),
143 plane.callsign = "UNKNOWN";
147 TowerPlaneRec::TowerPlaneRec(const PlaneRec& p, const Point3D& pt) :
149 clearedToLand(false),
150 clearedToLineUp(false),
151 clearedToTakeOff(false),
152 holdShortReported(false),
153 lineUpReported(false),
154 downwindReported(false),
155 longFinalReported(false),
156 longFinalAcknowledged(false),
157 finalReported(false),
158 finalAcknowledged(false),
159 rwyVacatedReported(false),
160 rwyVacatedAcknowledged(false),
161 goAroundReported(false),
162 instructedToGoAround(false),
165 vfrArrivalReported(false),
166 vfrArrivalAcknowledged(false),
169 landingType(AIP_LT_UNKNOWN),
171 gearUpReported(false),
181 /*******************************************
184 Currently user is assumed to have taken off again when leaving the runway - check speed/elev for taxiing-in. (MAJOR)
186 Use track instead of heading to determine what leg of the circuit the user is flying. (MINOR)
188 Use altitude as well as position to try to determine if the user has left the circuit. (MEDIUM - other issues as well).
190 Currently HoldShortReported code assumes there will be only one plane holding for the runway at once and
191 will break when planes start queueing. (CRITICAL)
193 Report-Runway-Vacated is left as only user ATC option following a go-around. (MAJOR)
195 Report-Downwind is not added as ATC option when user takes off to fly a circuit. (MAJOR)
197 eta of USER can be calculated very wrongly in circuit if flying straight out and turn4 etc are with +ve ortho y.
198 This can then screw up circuit ordering for other planes (MEDIUM)
200 USER leaving circuit needs to be more robustly considered when intentions unknown
201 Currently only considered during climbout and breaks when user turns (MEDIUM).
203 GetPos() of the AI planes is called erratically - either too much or not enough. (MINOR)
205 GO-AROUND is instructed very late at < 12s to landing - possibly make more dependent on chance of rwy clearing before landing (FEATURE)
207 Need to make clear when TowerPlaneRecs do or don't get deleted in RemoveFromCircuitList etc. (MINOR until I misuse it - then CRITICAL!)
209 FGTower::RemoveAllUserDialogOptions() really ought to be replaced by an ATCDialog::clear_entries() function. (MINOR - efficiency).
211 At the moment planes in the lists are not guaranteed to always have a sensible ETA - it should be set as part of AddList functions, and lists should only be accessed this way. (FAIRLY MAJOR).
212 *******************************************/
215 separateGround(true),
218 ATCmgr = globals->get_ATC_mgr();
222 // Init the property nodes - TODO - need to make sure we're getting surface winds.
223 wind_from_hdg = fgGetNode("/environment/wind-from-heading-deg", true);
224 wind_speed_knots = fgGetNode("/environment/wind-speed-kt", true);
227 update_count_max = 15;
229 holdListItr = holdList.begin();
230 appListItr = appList.begin();
231 depListItr = depList.begin();
232 rwyListItr = rwyList.begin();
233 circuitListItr = circuitList.begin();
234 trafficListItr = trafficList.begin();
235 vacatedListItr = vacatedList.begin();
239 timeSinceLastDeparture = 9999;
242 nominal_downwind_leg_pos = 1000.0;
243 nominal_base_leg_pos = -1000.0;
244 // TODO - set nominal crosswind leg pos based on minimum distance from takeoff end of rwy.
246 _departureControlled = false;
249 FGTower::~FGTower() {
250 if(!separateGround) {
255 void FGTower::Init() {
256 //cout << "Initialising tower " << ident << '\n';
258 // Pointers to user's position
259 user_lon_node = fgGetNode("/position/longitude-deg", true);
260 user_lat_node = fgGetNode("/position/latitude-deg", true);
261 user_elev_node = fgGetNode("/position/altitude-ft", true);
262 user_hdg_node = fgGetNode("/orientation/heading-deg", true);
264 // Need some way to initialise rwyOccupied flag correctly if the user is on the runway and to know its the user.
265 // I'll punt the startup issue for now though!!!
268 // Setup the ground control at this airport
270 //cout << "Tower ident = " << ident << '\n';
271 if(ATCmgr->GetAirportATCDetails(ident, &a)) {
272 if(a.ground_freq) { // Ground control
273 ground = (FGGround*)ATCmgr->GetATCPointer(ident, GROUND);
274 separateGround = true;
276 // Something has gone wrong :-(
277 SG_LOG(SG_ATC, SG_WARN, "ERROR - ground has frequency but can't get ground pointer :-(");
278 ground = new FGGround(ident);
279 separateGround = false;
282 ground->SetDisplay();
284 ground->SetNoDisplay();
288 // Initialise ground anyway to do the shortest path stuff!
289 // Note that we're now responsible for updating and deleting this - NOT the ATCMgr.
290 ground = new FGGround(ident);
291 separateGround = false;
294 ground->SetDisplay();
296 ground->SetNoDisplay();
300 SG_LOG(SG_ATC, SG_ALERT, "Unable to find airport details for " << ident << " in FGTower::Init()");
301 // Initialise ground anyway to avoid segfault later
302 ground = new FGGround(ident);
303 separateGround = false;
306 ground->SetDisplay();
308 ground->SetNoDisplay();
312 RemoveAllUserDialogOptions();
314 // TODO - attempt to get a departure control pointer to see if we need to hand off departing traffic to departure.
316 // Get the airport elevation
317 aptElev = fgGetAirportElev(ident.c_str());
319 // TODO - this function only assumes one active rwy.
322 // TODO - this currently assumes only one active runway.
323 rwyOccupied = OnActiveRunway(Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), 0.0));
325 if(!OnAnyRunway(Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), 0.0), false)) {
326 //cout << ident << " ADD 0\n";
327 current_atcdialog->add_entry(ident, "@AP Tower, @CS @MI miles @CD of the airport for full stop@AT",
328 "Contact tower for VFR arrival (full stop)", TOWER,
329 (int)USER_REQUEST_VFR_ARRIVAL_FULL_STOP);
331 //cout << "User found on active runway\n";
332 // Assume the user is started at the threshold ready to take-off
333 TowerPlaneRec* t = new TowerPlaneRec;
334 t->plane.callsign = fgGetString("/sim/user/callsign");
335 t->plane.type = GA_SINGLE; // FIXME - hardwired!!
336 t->opType = TTT_UNKNOWN; // We don't know if the user wants to do circuits or a departure...
337 t->landingType = AIP_LT_UNKNOWN;
338 t->leg = TAKEOFF_ROLL;
341 t->clearedToTakeOff = false;
342 rwyList.push_back(t);
343 rwyListItr = rwyList.begin();
345 current_atcdialog->add_entry(ident, "@CS @TO", "Request departure / take-off clearance",
346 TOWER, (int)USER_REQUEST_TAKE_OFF);
350 void FGTower::Update(double dt) {
351 //cout << "T" << endl;
352 // Each time step, what do we need to do?
353 // We need to go through the list of outstanding requests and acknowedgements
354 // and process at least one of them.
355 // We need to go through the list of planes under our control and check if
356 // any need to be addressed.
357 // We need to check for planes not under our control coming within our
358 // control area and address if necessary.
360 // TODO - a lot of the below probably doesn't need to be called every frame and should be staggered.
362 // Sort the arriving planes
365 if(ident == "KEMT") {
366 cout << update_count << "\ttL: " << trafficList.size() << " cL: " << circuitList.size() << " hL: " << holdList.size() << " aL: " << appList.size() << '\n';
369 //if(ident == "EGNX") cout << display << '\n';
371 if(departed != false) {
372 timeSinceLastDeparture += dt;
373 //if(ident == "KEMT")
374 // cout << " dt = " << dt << " timeSinceLastDeparture = " << timeSinceLastDeparture << '\n';
377 //cout << ident << " respond = " << respond << " responseReqd = " << responseReqd << '\n';
379 if(!responseReqd) SG_LOG(SG_ATC, SG_ALERT, "ERROR - respond is true and responseReqd is false in FGTower::Update(...)");
382 responseReqd = false;
385 // Calculate the eta of each plane to the threshold.
386 // For ground traffic this is the fastest they can get there.
387 // For air traffic this is the middle approximation.
388 if(update_count == 1) {
389 doThresholdETACalc();
392 // Order the list of traffic as per expected threshold use and flag any conflicts
393 if(update_count == 2) {
394 //bool conflicts = doThresholdUseOrder();
395 doThresholdUseOrder();
398 // sortConficts() !!!
400 if(update_count == 4) {
404 // Uggh - HACK - why have we got rwyOccupied - wouldn't simply testing rwyList.size() do?
411 if(update_count == 5 && rwyOccupied) {
415 if(update_count == 6) {
416 CheckCircuitList(dt);
419 if(update_count == 7) {
420 CheckApproachList(dt);
423 if(update_count == 8) {
424 CheckDepartureList(dt);
427 // TODO - do one plane from the departure list and set departed = false when out of consideration
431 if(!separateGround) {
432 // The display stuff might have to get more clever than this when not separate
433 // since the tower and ground might try communicating simultaneously even though
434 // they're mean't to be the same contoller/frequency!!
435 // We could also get rid of this by overloading FGATC's Set(No)Display() functions.
437 ground->SetDisplay();
439 ground->SetNoDisplay();
445 // How big should ii get - ie how long should the update cycle interval stretch?
446 if(update_count >= update_count_max) {
450 // Call the base class update for the response time handling.
454 if(ident == "KEMT") {
455 // For AI debugging convienience - may be removed
457 user_pos.setlon(user_lon_node->getDoubleValue());
458 user_pos.setlat(user_lat_node->getDoubleValue());
459 user_pos.setelev(user_elev_node->getDoubleValue());
460 Point3D user_ortho_pos = ortho.ConvertToLocal(user_pos);
461 fgSetDouble("/AI/user/ortho-x", user_ortho_pos.x());
462 fgSetDouble("/AI/user/ortho-y", user_ortho_pos.y());
463 fgSetDouble("/AI/user/elev", user_elev_node->getDoubleValue());
467 //cout << "Done T" << endl;
470 void FGTower::ReceiveUserCallback(int code) {
471 if(code == (int)USER_REQUEST_VFR_DEPARTURE) {
472 RequestDepartureClearance("USER");
473 } else if(code == (int)USER_REQUEST_VFR_ARRIVAL) {
474 VFRArrivalContact("USER");
475 } else if(code == (int)USER_REQUEST_VFR_ARRIVAL_FULL_STOP) {
476 VFRArrivalContact("USER", FULL_STOP);
477 } else if(code == (int)USER_REQUEST_VFR_ARRIVAL_TOUCH_AND_GO) {
478 VFRArrivalContact("USER", TOUCH_AND_GO);
479 } else if(code == (int)USER_REPORT_DOWNWIND) {
480 ReportDownwind("USER");
481 } else if(code == (int)USER_REPORT_3_MILE_FINAL) {
482 // For now we'll just call report final instead of report long final to avoid having to alter the response code
484 } else if(code == (int)USER_REPORT_RWY_VACATED) {
485 ReportRunwayVacated("USER");
486 } else if(code == (int)USER_REPORT_GOING_AROUND) {
487 ReportGoingAround("USER");
488 } else if(code == (int)USER_REQUEST_TAKE_OFF) {
489 RequestTakeOffClearance("USER");
493 // **************** RESPONSE FUNCTIONS ****************
495 void FGTower::Respond() {
496 //cout << "\nEntering Respond, responseID = " << responseID << endl;
497 TowerPlaneRec* t = FindPlane(responseID);
500 if(t->vfrArrivalReported && !t->vfrArrivalAcknowledged) {
501 //cout << "Tower " << ident << " is responding to VFR arrival reported...\n";
502 // Testing - hardwire straight in for now
503 string trns = t->plane.callsign;
507 // Should we clear staight in or for downwind entry?
508 // For now we'll clear straight in if greater than 1km from a line drawn through the threshold perpendicular to the rwy.
509 // Later on we might check the actual heading and direct some of those to enter on downwind or base.
510 Point3D op = ortho.ConvertToLocal(t->pos);
511 float gp = fgGetFloat("/gear/gear/position-norm");
513 t->gearWasUp = true; // This will be needed on final to tell "Gear down, ready to land."
515 trns += " Report three mile straight-in runway ";
516 t->opType = STRAIGHT_IN;
518 current_atcdialog->add_entry(ident, "@CS @MI mile final runway @RW@GR", "Report Final", TOWER, (int)USER_REPORT_3_MILE_FINAL);
520 t->planePtr->RegisterTransmission(14);
523 // For now we'll just request reporting downwind.
524 // TODO - In real life something like 'report 2 miles southwest right downwind rwy 19R' might be used
525 // but I'm not sure how to handle all permutations of which direction to tell to report from yet.
527 //cout << "Responding, rwy.patterDirection is " << rwy.patternDirection << '\n';
528 trns += ((rwy.patternDirection == 1) ? "right " : "left ");
529 trns += "downwind runway ";
531 // leave it in the app list until it gets into pattern though.
533 current_atcdialog->add_entry(ident, "@AP Tower, @CS Downwind @RW", "Report Downwind", TOWER, (int)USER_REPORT_DOWNWIND);
535 t->planePtr->RegisterTransmission(15);
538 trns += ConvertRwyNumToSpokenString(activeRwy);
540 pending_transmission = trns;
543 //cout << "Not displaying, trns was " << trns << '\n';
545 t->vfrArrivalAcknowledged = true;
546 } else if(t->downwindReported) {
547 //cout << "Tower " << ident << " is responding to downwind reported...\n";
548 ProcessDownwindReport(t);
549 t->downwindReported = false;
550 } else if(t->lineUpReported) {
551 string trns = t->plane.callsign;
553 double f = globals->get_ATC_mgr()->GetFrequency(ident, ATIS) / 100.0;
556 wtr = ", " + GetWeather();
558 trns += " Cleared for take-off" + wtr;
559 t->clearedToTakeOff = true;
561 if(!OnAnyRunway(Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), 0.0), true)) {
562 // TODO: Check if any AI Planes on final and tell something like: "After the landing CALLSIGN line up runway two eight right"
563 trns += " Line up runway " + ConvertRwyNumToSpokenString(activeRwy);
564 t->clearedToTakeOff = false;
565 current_atcdialog->add_entry(ident, "@CS @TO", "Report ready for take-off", TOWER, (int)USER_REQUEST_TAKE_OFF);
569 if((int(sg_random() * 10) + 1) != 3) {
570 t->clearedToTakeOff = true;
571 trns += " Cleared immediate take-off ";
573 t->clearedToTakeOff = false;
574 trns += " Negative, departure runway " + ConvertRwyNumToSpokenString(activeRwy);
579 pending_transmission = trns;
582 //cout << "Not displaying, trns was " << trns << '\n';
584 t->lineUpReported = false;
585 } else if(t->holdShortReported) {
586 //cout << "Tower " << ident << " is reponding to holdShortReported...\n";
588 if(rwyOccupied) { // TODO - ought to add a sanity check that it isn't this plane only on the runway (even though it shouldn't be!!)
589 // Do nothing for now - consider acknowloging hold short eventually
591 ClearHoldingPlane(t);
592 t->leg = TAKEOFF_ROLL;
593 rwyList.push_back(t);
594 rwyListItr = rwyList.begin();
596 // WARNING - WE ARE ASSUMING ONLY ONE PLANE REPORTING HOLD AT A TIME BELOW
597 // FIXME TODO - FIX THIS!!!
598 if(!holdList.empty()) {
599 if(holdListItr == holdList.end()) {
600 holdListItr = holdList.begin();
602 holdList.erase(holdListItr);
603 holdListItr = holdList.begin();
607 // Tell him to hold and what position he is.
608 // Not currently sure under which circumstances we do or don't bother transmitting this.
609 string trns = t->plane.callsign;
610 trns += " hold position";
612 pending_transmission = trns;
615 // TODO - add some idea of what traffic is blocking him.
617 t->holdShortReported = false;
618 } else if(t->finalReported && !(t->finalAcknowledged)) {
619 //cout << "Tower " << ident << " is responding to finalReported...\n";
621 string trns = t->plane.callsign;
622 //cout << (t->nextOnRwy ? "Next on rwy " : "Not next!! ");
623 //cout << (rwyOccupied ? "RWY OCCUPIED!!\n" : "Rwy not occupied\n");
624 if(t->nextOnRwy && !rwyOccupied && !(t->instructedToGoAround)) {
625 if(t->landingType == FULL_STOP) {
626 trns += " cleared to land ";
628 double f = globals->get_ATC_mgr()->GetFrequency(ident, ATIS) / 100.0;
631 wtr = ", " + GetWeather();
633 wtr = ", runway " + ConvertRwyNumToSpokenString(activeRwy);
635 trns += " cleared to land" + wtr;
638 t->clearedToLand = true;
639 // Maybe remove report downwind from menu here as well incase user didn't bother to?
641 //cout << "ADD VACATED B\n";
642 // Put going around at the top (and hence default) since that'll be more desperate,
643 // or put rwy vacated at the top since that'll be more common?
644 current_atcdialog->add_entry(ident, "@CS Going Around", "Report going around", TOWER, USER_REPORT_GOING_AROUND);
645 current_atcdialog->add_entry(ident, "@CS Clear of the runway", "Report runway vacated", TOWER, USER_REPORT_RWY_VACATED);
647 t->planePtr->RegisterTransmission(7);
649 } else if(t->eta < 20) {
650 // Do nothing - we'll be telling it to go around in less than 10 seconds if the
651 // runway doesn't clear so no point in calling "continue approach".
654 trns += " continue approach";
655 trns += " and report ";
656 trns += ((rwy.patternDirection == 1) ? "right " : "left ");
657 trns += "downwind runway " + ConvertRwyNumToSpokenString(activeRwy);
660 current_atcdialog->add_entry(ident, "@AP Tower, @CS Downwind @RW", "Report Downwind", TOWER, (int)USER_REPORT_DOWNWIND);
662 t->planePtr->RegisterTransmission(15);
664 t->clearedToLand = false;
666 if(_display && disp) {
667 pending_transmission = trns;
670 t->finalAcknowledged = true;
671 } else if(t->rwyVacatedReported && !(t->rwyVacatedAcknowledged)) {
672 ProcessRunwayVacatedReport(t);
673 t->rwyVacatedAcknowledged = true;
676 //freqClear = true; // FIXME - set this to come true after enough time to render the message
677 _releaseCounter = 0.0;
679 _runReleaseCounter = true;
680 //cout << "Done Respond\n" << endl;
683 void FGTower::ProcessDownwindReport(TowerPlaneRec* t) {
685 int a = 0; // Count of preceding planes on approach
686 bool cf = false; // conflicting traffic on final
687 bool cc = false; // preceding traffic in circuit
688 TowerPlaneRec* tc = NULL;
689 for(tower_plane_rec_list_iterator twrItr = circuitList.begin(); twrItr != circuitList.end(); twrItr++) {
690 if((*twrItr)->plane.callsign == responseID) break;
694 if(i > 1) { cc = true; }
695 doThresholdETACalc();
696 TowerPlaneRec* tf = NULL;
697 for(tower_plane_rec_list_iterator twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
698 if((*twrItr)->eta < (t->eta + 45) && strcmp((*twrItr)->plane.callsign.c_str(), t->plane.callsign.c_str()) != 0) { // don't let ATC ask you to follow yourself
702 // This should set the flagged plane to be the last conflicting one, and hence the one to follow.
703 // It ignores the fact that we might have problems slotting into the approach traffic behind it -
704 // eventually we'll need some fancy algorithms for that!
707 string trns = t->plane.callsign;
709 trns += ConvertNumToSpokenDigits(i + a);
710 // This assumes that the number spoken is landing position, not circuit position, since some of the traffic might be on straight-in final.
712 TowerPlaneRec* tt = NULL;
713 if((i == 1) && rwyList.empty() && (t->nextOnRwy) && (!cf)) { // Unfortunately nextOnRwy currently doesn't handle circuit/straight-in ordering properly at present, hence the cf check below.
714 trns += "Cleared to land"; // TODO - clear for the option if appropriate
715 t->clearedToLand = true;
716 if(!t->isUser) t->planePtr->RegisterTransmission(7);
717 } else if((i+a) > 1) {
718 //First set tt to point to the correct preceding plane - final or circuit
720 tt = (tf->eta < tc->eta ? tf : tc);
726 // We should never get here!
727 SG_LOG(SG_ATC, SG_ALERT, "ALERT - Logic error in FGTower::ProcessDownwindReport");
730 trns += "Follow the ";
731 string s = tt->plane.callsign;
735 if((tt->opType) == CIRCUIT) {
740 leg = tt->planePtr->GetLeg();
744 } else if(leg == TURN4) {
745 trns += " turning final";
746 } else if(leg == BASE) {
748 } else if(leg == TURN3) {
749 trns += " turning base";
752 double miles_out = CalcDistOutMiles(tt);
754 trns += " on short final";
757 trns += ConvertNumToSpokenDigits((int)miles_out);
758 trns += " mile final";
763 pending_transmission = trns;
767 if(t->opType == TTT_UNKNOWN) t->opType = CIRCUIT;
768 //cout << "ADD VACATED A\n";
769 // Put going around at the top (and hence default) since that'll be more desperate,
770 // or put rwy vacated at the top since that'll be more common?
771 //cout << "ident = " << ident << ", adding go-around option\n";
772 current_atcdialog->add_entry(ident, "@CS Going Around", "Report going around", TOWER, USER_REPORT_GOING_AROUND);
773 current_atcdialog->add_entry(ident, "@CS Clear of the runway", "Report runway vacated", TOWER, USER_REPORT_RWY_VACATED);
777 void FGTower::ProcessRunwayVacatedReport(TowerPlaneRec* t) {
778 //cout << "Processing rwy vacated...\n";
779 if(t->isUser) current_atcdialog->remove_entry(ident, USER_REPORT_GOING_AROUND, TOWER);
780 string trns = t->plane.callsign;
782 trns += " Contact ground on ";
783 double f = globals->get_ATC_mgr()->GetFrequency(ident, GROUND) / 100.0;
785 sprintf(buf, "%.2f", f);
788 if(!t->isUser) t->planePtr->RegisterTransmission(5);
791 trns += " cleared for taxi to general aviation parking";
792 if(!t->isUser) t->planePtr->RegisterTransmission(6); // TODO - this is a mega-hack!!
794 //cout << "trns = " << trns << '\n';
796 pending_transmission = trns;
799 RemoveFromRwyList(t->plane.callsign);
801 // Maybe we should check that the plane really *has* vacated the runway!
804 // *********** END RESPONSE FUNCTIONS *****************
806 // Currently this assumes we *are* next on the runway and doesn't check for planes about to land -
807 // this should be done prior to calling this function.
808 void FGTower::ClearHoldingPlane(TowerPlaneRec* t) {
809 //cout << "Entering ClearHoldingPlane..." << endl;
811 string trns = t->plane.callsign;
812 //if(departed plane < some threshold in time away) {
814 //if(timeSinceLastDeparture <= 60.0 && departed == true) {
815 trns += " line up runway " + ConvertRwyNumToSpokenString(activeRwy);
816 t->clearedToLineUp = true;
817 t->planePtr->RegisterTransmission(3); // cleared to line-up
818 //} else if(arriving plane < some threshold away) {
819 } else if(GetTrafficETA(2) < 150.0 && (timeSinceLastDeparture > 60.0 || departed == false)) { // Hack - hardwired time
820 trns += " cleared immediate take-off";
821 if(trafficList.size()) {
822 tower_plane_rec_list_iterator trfcItr = trafficList.begin();
823 trfcItr++; // At the moment the holding plane should be first in trafficList.
824 // Note though that this will break if holding planes aren't put in trafficList in the future.
825 TowerPlaneRec* trfc = *trfcItr;
826 trns += "... traffic is";
827 switch(trfc->plane.type) {
831 trns += " a Cessna"; // TODO - add ability to specify actual plane type somewhere
837 trns += " a King-air";
840 trns += " a Learjet";
843 trns += " a Regional";
852 //if(trfc->opType == STRAIGHT_IN || trfc->opType == TTT_UNKNOWN) {
853 if(trfc->opType == STRAIGHT_IN) {
854 double miles_out = CalcDistOutMiles(trfc);
859 trns += ConvertNumToSpokenDigits((int)miles_out);
860 trns += " mile final";
862 } else if(trfc->opType == CIRCUIT) {
863 //cout << "Getting leg of " << trfc->plane.callsign << '\n';
869 trns += " turning final";
875 trns += " turning base";
878 trns += " in circuit"; // At the moment the user plane is generally flagged as unknown opType when downwind incase its a downwind departure which means we won't get here.
880 // And to eliminate compiler warnings...
881 case TAKEOFF_ROLL: break;
882 case CLIMBOUT: break;
884 case CROSSWIND: break;
886 case LANDING_ROLL: break;
887 case LEG_UNKNOWN: break;
891 // By definition there should be some arriving traffic if we're cleared for immediate takeoff
892 SG_LOG(SG_ATC, SG_WARN, "Warning: Departing traffic cleared for *immediate* take-off despite no arriving traffic in FGTower");
894 t->clearedToTakeOff = true;
895 t->planePtr->RegisterTransmission(4); // cleared to take-off - TODO differentiate between immediate and normal take-off
897 timeSinceLastDeparture = 0.0;
899 //} else if(timeSinceLastDeparture > 60.0 || departed == false) { // Hack - test for timeSinceLastDeparture should be in lineup block eventually
900 trns += " cleared for take-off";
901 // TODO - add traffic is... ?
902 t->clearedToTakeOff = true;
903 t->planePtr->RegisterTransmission(4); // cleared to take-off
905 timeSinceLastDeparture = 0.0;
908 pending_transmission = trns;
911 //cout << "Done ClearHoldingPlane " << endl;
915 // ***************************************************************************************
916 // ********** Functions to periodically check what the various traffic is doing **********
918 // Do one plane from the hold list
919 void FGTower::CheckHoldList(double dt) {
920 //cout << "Entering CheckHoldList..." << endl;
921 if(!holdList.empty()) {
922 //cout << "*holdListItr = " << *holdListItr << endl;
923 if(holdListItr == holdList.end()) {
924 holdListItr = holdList.begin();
926 //cout << "*holdListItr = " << *holdListItr << endl;
927 //Process(*holdListItr);
928 TowerPlaneRec* t = *holdListItr;
929 //cout << "t = " << t << endl;
930 if(t->holdShortReported) {
931 // NO-OP - leave it to the response handler.
932 } else { // not responding to report, but still need to clear if clear
934 //cout << "departed = " << departed << '\n';
935 //cout << "timeSinceLastDeparture = " << timeSinceLastDeparture << '\n';
937 RemoveAllUserDialogOptions();
938 current_atcdialog->add_entry(ident, "@CS Ready for take-off", "Request take-off clearance", TOWER, (int)USER_REQUEST_TAKE_OFF);
939 } else if(timeSinceLastDeparture <= 60.0 && departed == true) {
940 // Do nothing - this is a bit of a hack - should maybe do line up be ready here
942 ClearHoldingPlane(t);
943 t->leg = TAKEOFF_ROLL;
944 rwyList.push_back(t);
945 rwyListItr = rwyList.begin();
947 holdList.erase(holdListItr);
948 holdListItr = holdList.begin();
949 if (holdList.empty())
953 // TODO - rationalise the considerable code duplication above!
957 //cout << "Done CheckHoldList" << endl;
960 // do the ciruit list
961 void FGTower::CheckCircuitList(double dt) {
962 //cout << "Entering CheckCircuitList..." << endl;
963 // Clear the constraints - we recalculate here.
965 downwind_leg_pos = 0.0;
966 crosswind_leg_pos = 0.0;
968 if(!circuitList.empty()) { // Do one plane from the circuit
969 if(circuitListItr == circuitList.end()) {
970 circuitListItr = circuitList.begin();
972 TowerPlaneRec* t = *circuitListItr;
973 //cout << ident << ' ' << circuitList.size() << ' ' << t->plane.callsign << " " << t->leg << " eta " << t->eta << '\n';
975 t->pos.setlon(user_lon_node->getDoubleValue());
976 t->pos.setlat(user_lat_node->getDoubleValue());
977 t->pos.setelev(user_elev_node->getDoubleValue());
978 //cout << ident << ' ' << circuitList.size() << ' ' << t->plane.callsign << " " << t->leg << " eta " << t->eta << '\n';
980 t->pos = t->planePtr->GetPos(); // We should probably only set the pos's on one walk through the traffic list in the update function, to save a few CPU should we end up duplicating this.
981 t->landingType = t->planePtr->GetLandingOption();
982 //cout << "AI plane landing option is " << t->landingType << '\n';
984 Point3D tortho = ortho.ConvertToLocal(t->pos);
986 // Need to figure out which leg he's on
987 //cout << "rwy.hdg = " << rwy.hdg << " user hdg = " << user_hdg_node->getDoubleValue();
988 double ho = GetAngleDiff_deg(user_hdg_node->getDoubleValue(), rwy.hdg);
989 //cout << " ho = " << ho << " abs(ho = " << abs(ho) << '\n';
990 // TODO FIXME - get the wind and convert this to track, or otherwise use track somehow!!!
991 // If it's gusty might need to filter the value, although we are leaving 30 degrees each way leeway!
993 // could be either takeoff, climbout or landing - check orthopos.y
994 //cout << "tortho.y = " << tortho.y() << '\n';
995 if((tortho.y() < 0) || (t->leg == TURN4) || (t->leg == FINAL)) {
999 t->leg = CLIMBOUT; // TODO - check elev wrt. apt elev to differentiate takeoff roll and climbout
1000 //cout << "Climbout\n";
1001 // If it's the user we may be unsure of his/her intentions.
1002 // (Hopefully the AI planes won't try confusing the sim!!!)
1003 //cout << "tortho.y = " << tortho.y() << '\n';
1004 if(t->opType == TTT_UNKNOWN) {
1005 if(tortho.y() > 5000) {
1006 // 5 km out from threshold - assume it's a departure
1007 t->opType = OUTBOUND; // TODO - could check if the user has climbed significantly above circuit altitude as well.
1008 // Since we are unknown operation we should be in depList already.
1009 //cout << ident << " Removing user from circuitList (TTT_UNKNOWN)\n";
1010 circuitListItr = circuitList.erase(circuitListItr);
1011 RemoveFromTrafficList(t->plane.callsign);
1012 if (circuitList.empty())
1015 } else if(t->opType == CIRCUIT) {
1016 if(tortho.y() > 10000) {
1017 // 10 km out - assume the user has abandoned the circuit!!
1018 t->opType = OUTBOUND;
1019 depList.push_back(t);
1020 depListItr = depList.begin();
1021 //cout << ident << " removing user from circuitList (CIRCUIT)\n";
1022 circuitListItr = circuitList.erase(circuitListItr);
1023 if (circuitList.empty())
1028 } else if(fabs(ho) < 60) {
1030 // TODO - either fix or doublecheck this hack by looking at heading and pattern direction
1031 if((t->leg == CLIMBOUT) || (t->leg == TURN1)) {
1033 //cout << "Turn1\n";
1036 //cout << "Turn4\n";
1038 } else if(fabs(ho) < 120) {
1039 // crosswind or base
1040 // TODO - either fix or doublecheck this hack by looking at heading and pattern direction
1041 if((t->leg == TURN1) || (t->leg == CROSSWIND)) {
1043 //cout << "Crosswind\n";
1048 } else if(fabs(ho) < 150) {
1050 // TODO - either fix or doublecheck this hack by looking at heading and pattern direction
1051 if((t->leg == CROSSWIND) || (t->leg == TURN2)) {
1053 //cout << "Turn2\n";
1056 // Probably safe now to assume the user is flying a circuit
1057 t->opType = CIRCUIT;
1058 //cout << "Turn3\n";
1063 //cout << "Downwind\n";
1065 if(t->leg == FINAL) {
1066 if(OnActiveRunway(t->pos)) {
1067 t->leg = LANDING_ROLL;
1071 t->leg = t->planePtr->GetLeg();
1074 // Set the constraints IF this is the first plane in the circuit
1075 // TODO - at the moment we're constraining plane 2 based on plane 1 - this won't (or might not) work for 3 planes in the circuit!!
1076 if(circuitListItr == circuitList.begin()) {
1079 // Base leg must be at least as far out as the plane is - actually possibly not necessary for separation, but we'll use that for now.
1080 base_leg_pos = tortho.y();
1081 //cout << "base_leg_pos = " << base_leg_pos << '\n';
1084 // Fall through to base
1086 base_leg_pos = tortho.y();
1087 //cout << "base_leg_pos = " << base_leg_pos << '\n';
1090 // Fall through to downwind
1092 // Only have the downwind leg pos as turn-to-base constraint if more negative than we already have.
1093 base_leg_pos = (tortho.y() < base_leg_pos ? tortho.y() : base_leg_pos);
1094 //cout << "base_leg_pos = " << base_leg_pos;
1095 downwind_leg_pos = tortho.x(); // Assume that a following plane can simply be constrained by the immediately in front downwind plane
1096 //cout << " downwind_leg_pos = " << downwind_leg_pos << '\n';
1099 // Fall through to crosswind
1101 crosswind_leg_pos = tortho.y();
1102 //cout << "crosswind_leg_pos = " << crosswind_leg_pos << '\n';
1103 t->instructedToGoAround = false;
1106 // Fall through to climbout
1108 // Only use current by constraint as largest
1109 crosswind_leg_pos = (tortho.y() > crosswind_leg_pos ? tortho.y() : crosswind_leg_pos);
1110 //cout << "crosswind_leg_pos = " << crosswind_leg_pos << '\n';
1123 if(t->leg == FINAL && !(t->instructedToGoAround)) {
1124 doThresholdETACalc();
1125 doThresholdUseOrder();
1128 cout << "Checking USER on final... ";
1129 cout << "eta " << t->eta;
1130 if(t->clearedToLand) cout << " cleared to land\n";
1133 //cout << "YES FINAL, t->eta = " << t->eta << ", rwyList.size() = " << rwyList.size() << '\n';
1134 if(t->landingType == FULL_STOP) {
1135 t->opType = INBOUND;
1136 //cout << "\n******** SWITCHING TO INBOUND AT POINT AAA *********\n\n";
1138 if(t->eta < 12 && rwyList.size()) {
1139 // TODO - need to make this more sophisticated
1140 // eg. is the plane accelerating down the runway taking off [OK],
1141 // or stationary near the start [V. BAD!!].
1142 // For now this should stop the AI plane landing on top of the user.
1143 tower_plane_rec_list_iterator twrItr;
1144 twrItr = rwyList.begin();
1145 TowerPlaneRec* tpr = *twrItr;
1146 if(strcmp(tpr->plane.callsign.c_str(), t->plane.callsign.c_str()) == 0
1147 && rwyList.size() == 1) {
1148 // Fixing bug when ATC says that we must go around because of traffic on rwy
1149 // but that traffic is our plane! In future we can use this expression
1150 // for other ATC-messages like "On ground at 46, vacate left."
1153 string trns = t->plane.callsign;
1154 trns += " GO AROUND TRAFFIC ON RUNWAY I REPEAT GO AROUND";
1155 pending_transmission = trns;
1156 ImmediateTransmit();
1157 t->instructedToGoAround = true;
1158 t->clearedToLand = false;
1159 // Assume it complies!!!
1160 t->opType = CIRCUIT;
1163 //cout << "Registering Go-around transmission with AI plane\n";
1164 t->planePtr->RegisterTransmission(13);
1167 } else if(!t->clearedToLand) {
1168 // The whip through the appList is a hack since currently t->nextOnRwy doesn't always work
1171 for(tower_plane_rec_list_iterator twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
1172 if((*twrItr)->eta < t->eta) {
1176 if(t->nextOnRwy && !cf) {
1177 if(!rwyList.size()) {
1178 string trns = t->plane.callsign;
1179 trns += " Cleared to land";
1180 pending_transmission = trns;
1182 //if(t->isUser) cout << "Transmitting cleared to Land!!!\n";
1183 t->clearedToLand = true;
1185 t->planePtr->RegisterTransmission(7);
1189 //if(t->isUser) cout << "Not next\n";
1192 } else if(t->leg == LANDING_ROLL) {
1193 //cout << t->plane.callsign << " has landed - adding to rwyList\n";
1194 rwyList.push_front(t);
1195 // TODO - if(!clearedToLand) shout something!!
1196 t->clearedToLand = false;
1197 RemoveFromTrafficList(t->plane.callsign);
1199 t->opType = TTT_UNKNOWN;
1200 } // TODO - allow the user to specify opType via ATC menu
1201 //cout << ident << " Removing " << t->plane.callsign << " from circuitList..." << endl;
1202 circuitListItr = circuitList.erase(circuitListItr);
1203 if(circuitListItr == circuitList.end() ) {
1204 circuitListItr = circuitList.begin();
1205 // avoid increment of circuitListItr (would increment to second element, or crash if no element left)
1211 //cout << "Done CheckCircuitList" << endl;
1214 // Do the runway list - we'll do the whole runway list since it's important and there'll never be many planes on the rwy at once!!
1215 // FIXME - at the moment it looks like we're only doing the first plane from the rwy list.
1216 // (However, at the moment there should only be one airplane on the rwy at once, until we
1217 // start allowing planes to line up whilst previous arrival clears the rwy.)
1218 void FGTower::CheckRunwayList(double dt) {
1219 //cout << "Entering CheckRunwayList..." << endl;
1221 if(!rwyList.size()) {
1222 rwyOccupied = false;
1224 rwyListItr = rwyList.begin();
1225 TowerPlaneRec* t = *rwyListItr;
1227 t->pos.setlon(user_lon_node->getDoubleValue());
1228 t->pos.setlat(user_lat_node->getDoubleValue());
1229 t->pos.setelev(user_elev_node->getDoubleValue());
1231 t->pos = t->planePtr->GetPos(); // We should probably only set the pos's on one walk through the traffic list in the update function, to save a few CPU should we end up duplicating this.
1233 bool on_rwy = OnActiveRunway(t->pos);
1235 // TODO - for all of these we need to check what the user is *actually* doing!
1236 if((t->opType == INBOUND) || (t->opType == STRAIGHT_IN)) {
1237 //cout << "Tower " << ident << " is removing plane " << t->plane.callsign << " from rwy list (vacated)\n";
1238 //cout << "Size of rwylist was " << rwyList.size() << '\n';
1239 //cout << "Size of vacatedList was " << vacatedList.size() << '\n';
1240 RemoveFromRwyList(t->plane.callsign);
1241 AddToVacatedList(t);
1242 //cout << "Size of rwylist is " << rwyList.size() << '\n';
1243 //cout << "Size of vacatedList is " << vacatedList.size() << '\n';
1244 // At the moment we wait until Runway Vacated is reported by the plane before telling to contact ground etc.
1245 // It's possible we could be a bit more proactive about this.
1246 } else if(t->opType == OUTBOUND) {
1247 depList.push_back(t);
1248 depListItr = depList.begin();
1249 rwyList.pop_front();
1251 timeSinceLastDeparture = 0.0;
1252 } else if(t->opType == CIRCUIT) {
1253 //cout << ident << " adding " << t->plane.callsign << " to circuitList" << endl;
1254 circuitList.push_back(t);
1255 circuitListItr = circuitList.begin();
1256 AddToTrafficList(t);
1257 rwyList.pop_front();
1259 timeSinceLastDeparture = 0.0;
1260 } else if(t->opType == TTT_UNKNOWN) {
1261 depList.push_back(t);
1262 depListItr = depList.begin();
1263 //cout << ident << " adding " << t->plane.callsign << " to circuitList" << endl;
1264 circuitList.push_back(t);
1265 circuitListItr = circuitList.begin();
1266 AddToTrafficList(t);
1267 rwyList.pop_front();
1269 timeSinceLastDeparture = 0.0; // TODO - we need to take into account that the user might taxi-in when flagged opType UNKNOWN - check speed/altitude etc to make decision as to what user is up to.
1271 // HELP - we shouldn't ever get here!!!
1276 //cout << "Done CheckRunwayList" << endl;
1279 // Do one plane from the approach list
1280 void FGTower::CheckApproachList(double dt) {
1281 //cout << "CheckApproachList called for " << ident << endl;
1282 //cout << "AppList.size is " << appList.size() << endl;
1283 if(!appList.empty()) {
1284 if(appListItr == appList.end()) {
1285 appListItr = appList.begin();
1287 TowerPlaneRec* t = *appListItr;
1288 //cout << "t = " << t << endl;
1289 //cout << "Checking " << t->plane.callsign << endl;
1291 t->pos.setlon(user_lon_node->getDoubleValue());
1292 t->pos.setlat(user_lat_node->getDoubleValue());
1293 t->pos.setelev(user_elev_node->getDoubleValue());
1295 // TODO - set/update the position if it's an AI plane
1297 doThresholdETACalc(); // We need this here because planes in the lists are not guaranteed to *always* have the correct ETA
1298 //cout << "eta is " << t->eta << ", rwy is " << (rwyList.size() ? "occupied " : "clear ") << '\n';
1299 Point3D tortho = ortho.ConvertToLocal(t->pos);
1300 if(t->eta < 12 && rwyList.size() && !(t->instructedToGoAround)) {
1301 // TODO - need to make this more sophisticated
1302 // eg. is the plane accelerating down the runway taking off [OK],
1303 // or stationary near the start [V. BAD!!].
1304 // For now this should stop the AI plane landing on top of the user.
1305 tower_plane_rec_list_iterator twrItr;
1306 twrItr = rwyList.begin();
1307 TowerPlaneRec* tpr = *twrItr;
1308 if(strcmp ( tpr->plane.callsign.c_str(), t->plane.callsign.c_str() ) == 0 && rwyList.size() == 1) {
1309 // Fixing bug when ATC says that we must go around because of traffic on rwy
1310 // but that traffic is we! In future we can use this expression
1311 // for other ATC-messages like "On ground at 46, vacate left."
1314 string trns = t->plane.callsign;
1315 trns += " GO AROUND TRAFFIC ON RUNWAY I REPEAT GO AROUND";
1316 pending_transmission = trns;
1317 ImmediateTransmit();
1318 t->instructedToGoAround = true;
1319 t->clearedToLand = false;
1320 t->nextOnRwy = false; // But note this is recalculated so don't rely on it
1321 // Assume it complies!!!
1322 t->opType = CIRCUIT;
1326 //cout << "Registering Go-around transmission with AI plane\n";
1327 t->planePtr->RegisterTransmission(13);
1330 // TODO - add Go-around ack to comm options,
1331 // remove report rwy vacated. (possibly).
1334 } else if(t->isUser && t->eta < 90 && tortho.y() > -2500 && t->clearedToLand && t->gearUpReported == false) {
1335 // Check if gear up or down
1336 double gp = fgGetFloat("/gear/gear/position-norm");
1338 string trnsm = t->plane.callsign;
1340 int rnd = int(sg_random() * 2) + 1;
1341 if(rnd == 2) { // Random message for more realistic ATC ;)
1342 trnsm += ", LANDING GEAR APPEARS UP!";
1344 trnsm += ", Check wheels down and locked.";
1346 pending_transmission = trnsm;
1347 ImmediateTransmit();
1348 t->gearUpReported = true;
1350 } else if(t->eta < 90 && !t->clearedToLand) {
1351 //doThresholdETACalc();
1352 doThresholdUseOrder();
1353 // The whip through the appList is a hack since currently t->nextOnRwy doesn't always work
1356 for(tower_plane_rec_list_iterator twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
1357 if((*twrItr)->eta < t->eta) {
1361 if(t->nextOnRwy && !cf) {
1362 if(!rwyList.size()) {
1363 string trns = t->plane.callsign;
1364 trns += " Cleared to land";
1365 pending_transmission = trns;
1367 //if(t->isUser) cout << "Transmitting cleared to Land!!!\n";
1368 t->clearedToLand = true;
1370 t->planePtr->RegisterTransmission(7);
1374 //if(t->isUser) cout << "Not next\n";
1378 // Check for landing...
1379 bool landed = false;
1382 if(t->planePtr->GetLeg() == LANDING_ROLL) {
1386 SG_LOG(SG_ATC, SG_ALERT, "WARNING - not user and null planePtr in CheckApproachList!");
1389 if(OnActiveRunway(t->pos)) {
1395 // Duplicated in CheckCircuitList - must be able to rationalise this somehow!
1396 //cout << "A " << t->plane.callsign << " has landed, adding to rwyList...\n";
1397 rwyList.push_front(t);
1398 // TODO - if(!clearedToLand) shout something!!
1399 t->clearedToLand = false;
1400 RemoveFromTrafficList(t->plane.callsign);
1402 // t->opType = TTT_UNKNOWN;
1403 //} // TODO - allow the user to specify opType via ATC menu
1404 appListItr = appList.erase(appListItr);
1405 if(appListItr == appList.end() ) {
1406 appListItr = appList.begin();
1408 if (appList.empty())
1415 //cout << "Done" << endl;
1418 // Do one plane from the departure list
1419 void FGTower::CheckDepartureList(double dt) {
1420 if(!depList.empty()) {
1421 if(depListItr == depList.end()) {
1422 depListItr = depList.begin();
1424 TowerPlaneRec* t = *depListItr;
1425 //cout << "Dep list, checking " << t->plane.callsign;
1427 double distout; // meters
1428 if(t->isUser) distout = dclGetHorizontalSeparation(Point3D(lon, lat, elev), Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), user_elev_node->getDoubleValue()));
1429 else distout = dclGetHorizontalSeparation(Point3D(lon, lat, elev), t->planePtr->GetPos());
1430 //cout << " distout = " << distout << '\n';
1431 if(t->isUser && !(t->clearedToTakeOff)) { // HACK - we use clearedToTakeOff to check if ATC already contacted with plane (and cleared take-off) or not
1432 if(!OnAnyRunway(Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), 0.0), false)) {
1433 current_atcdialog->remove_entry(ident, USER_REQUEST_TAKE_OFF, TOWER);
1434 t->clearedToTakeOff = true; // FIXME
1437 if(distout > 10000) {
1438 string trns = t->plane.callsign;
1439 trns += " You are now clear of my airspace, good day";
1440 pending_transmission = trns;
1443 // Change the communication options
1444 RemoveAllUserDialogOptions();
1445 //cout << "ADD A\n";
1446 current_atcdialog->add_entry(ident, "@AP Tower, @CS @MI miles @CD of the airport for full stop@AT", "Contact tower for VFR arrival (full stop)", TOWER, (int)USER_REQUEST_VFR_ARRIVAL_FULL_STOP);
1448 // Send a clear-of-airspace signal
1449 // TODO - implement this once we actually have departing AI traffic (currently all circuits or arrivals).
1451 RemovePlane(t->plane.callsign);
1458 // ********** End periodic check functions ***********************************************
1459 // ***************************************************************************************
1462 // Remove all dialog options for this tower.
1463 void FGTower::RemoveAllUserDialogOptions() {
1464 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_DEPARTURE, TOWER);
1465 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_ARRIVAL, TOWER);
1466 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_ARRIVAL_FULL_STOP, TOWER);
1467 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_ARRIVAL_TOUCH_AND_GO, TOWER);
1468 current_atcdialog->remove_entry(ident, USER_REPORT_3_MILE_FINAL, TOWER);
1469 current_atcdialog->remove_entry(ident, USER_REPORT_DOWNWIND, TOWER);
1470 current_atcdialog->remove_entry(ident, USER_REPORT_RWY_VACATED, TOWER);
1471 current_atcdialog->remove_entry(ident, USER_REPORT_GOING_AROUND, TOWER);
1472 current_atcdialog->remove_entry(ident, USER_REQUEST_TAKE_OFF, TOWER);
1475 // Returns true if positions of crosswind/downwind/base leg turns should be constrained by previous traffic
1476 // plus the constraint position as a rwy orientated orthopos (meters)
1477 bool FGTower::GetCrosswindConstraint(double& cpos) {
1478 if(crosswind_leg_pos != 0.0) {
1479 cpos = crosswind_leg_pos;
1486 bool FGTower::GetDownwindConstraint(double& dpos) {
1487 if(fabs(downwind_leg_pos) > nominal_downwind_leg_pos) {
1488 dpos = downwind_leg_pos;
1495 bool FGTower::GetBaseConstraint(double& bpos) {
1496 if(base_leg_pos < nominal_base_leg_pos) {
1497 bpos = base_leg_pos;
1500 bpos = nominal_base_leg_pos;
1506 // Figure out which runways are active.
1507 // For now we'll just be simple and do one active runway - eventually this will get much more complex
1508 // This is a private function - public interface to the results of this is through GetActiveRunway
1509 void FGTower::DoRwyDetails() {
1510 //cout << "GetRwyDetails called" << endl;
1512 // Based on the airport-id and wind get the active runway
1514 const FGAirport* apt = fgFindAirportID(ident);
1516 FGRunway* runway = apt->getActiveRunwayForUsage();
1518 activeRwy = runway->ident();
1519 rwy.rwyID = runway->ident();
1520 SG_LOG(SG_ATC, SG_INFO, "In FGGround, active runway for airport " << ident << " is " << activeRwy);
1522 // Get the threshold position
1523 double other_way = runway->headingDeg() - 180.0;
1524 while(other_way <= 0.0) {
1527 // move to the +l end/center of the runway
1528 //cout << "Runway center is at " << runway._lon << ", " << runway._lat << '\n';
1529 Point3D origin = Point3D(runway->longitude(), runway->latitude(), aptElev);
1530 Point3D ref = origin;
1531 double tshlon, tshlat, tshr;
1532 double tolon, tolat, tor;
1533 rwy.length = runway->lengthM();
1534 geo_direct_wgs_84 ( aptElev, ref.lat(), ref.lon(), other_way,
1535 rwy.length / 2.0 - 25.0, &tshlat, &tshlon, &tshr );
1536 geo_direct_wgs_84 ( aptElev, ref.lat(), ref.lon(), runway->headingDeg(),
1537 rwy.length / 2.0 - 25.0, &tolat, &tolon, &tor );
1539 // Note - 25 meters in from the runway end is a bit of a hack to put the plane ahead of the user.
1540 // now copy what we need out of runway into rwy
1541 rwy.threshold_pos = Point3D(tshlon, tshlat, aptElev);
1542 Point3D takeoff_end = Point3D(tolon, tolat, aptElev);
1543 //cout << "Threshold position = " << tshlon << ", " << tshlat << ", " << aptElev << '\n';
1544 //cout << "Takeoff position = " << tolon << ", " << tolat << ", " << aptElev << '\n';
1545 rwy.hdg = runway->headingDeg();
1546 // Set the projection for the local area based on this active runway
1547 ortho.Init(rwy.threshold_pos, rwy.hdg);
1548 rwy.end1ortho = ortho.ConvertToLocal(rwy.threshold_pos); // should come out as zero
1549 rwy.end2ortho = ortho.ConvertToLocal(takeoff_end);
1551 // Set the pattern direction
1552 // TODO - we'll check for a facilities file with this in eventually - for now assume left traffic except
1553 // for certain circumstances (RH parallel rwy).
1554 rwy.patternDirection = -1; // Left
1555 if(rwy.rwyID.size() == 3) {
1556 rwy.patternDirection = (rwy.rwyID.substr(2,1) == "R" ? 1 : -1);
1558 //cout << "Doing details, rwy.patterDirection is " << rwy.patternDirection << '\n';
1562 // Figure out if a given position lies on the active runway
1563 // Might have to change when we consider more than one active rwy.
1564 bool FGTower::OnActiveRunway(const Point3D& pt) {
1565 // TODO - check that the centre calculation below isn't confused by displaced thesholds etc.
1566 Point3D xyc((rwy.end1ortho.x() + rwy.end2ortho.x())/2.0, (rwy.end1ortho.y() + rwy.end2ortho.y())/2.0, 0.0);
1567 Point3D xyp = ortho.ConvertToLocal(pt);
1569 //cout << "Length offset = " << fabs(xyp.y() - xyc.y()) << '\n';
1570 //cout << "Width offset = " << fabs(xyp.x() - xyc.x()) << '\n';
1572 double rlen = rwy.length/2.0 + 5.0;
1573 double rwidth = rwy.width/2.0;
1574 double ldiff = fabs(xyp.y() - xyc.y());
1575 double wdiff = fabs(xyp.x() - xyc.x());
1577 return((ldiff < rlen) && (wdiff < rwidth));
1580 // Figure out if a given position lies on any runway or not
1581 // Only call this at startup - reading the runways database is expensive and needs to be fixed!
1582 bool FGTower::OnAnyRunway(const Point3D& pt, bool onGround) {
1584 double dist = current_commlist->FindClosest(lon, lat, elev, ad, TOWER, 7.0);
1589 // Based on the airport-id, go through all the runways and check for a point in them
1591 const FGAirport* apt = fgFindAirportID(ad.ident);
1594 for (unsigned int i=0; i<apt->numRunways(); ++i) {
1595 if (OnRunway(pt, apt->getRunwayByIndex(i))) {
1600 // if onGround is true, we only match real runways, so we're done
1601 if (onGround) return false;
1603 // try taxiways as well
1604 for (unsigned int i=0; i<apt->numTaxiways(); ++i) {
1605 if (OnRunway(pt, apt->getTaxiwayByIndex(i))) {
1614 // Returns true if successful
1615 bool FGTower::RemoveFromTrafficList(const string& id) {
1616 tower_plane_rec_list_iterator twrItr;
1617 for(twrItr = trafficList.begin(); twrItr != trafficList.end(); twrItr++) {
1618 TowerPlaneRec* tpr = *twrItr;
1619 if(tpr->plane.callsign == id) {
1620 trafficList.erase(twrItr);
1621 trafficListItr = trafficList.begin();
1625 SG_LOG(SG_ATC, SG_WARN, "Warning - unable to remove aircraft " << id << " from trafficList in FGTower");
1630 // Returns true if successful
1631 bool FGTower::RemoveFromAppList(const string& id) {
1632 tower_plane_rec_list_iterator twrItr;
1633 for(twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
1634 TowerPlaneRec* tpr = *twrItr;
1635 if(tpr->plane.callsign == id) {
1636 appList.erase(twrItr);
1637 appListItr = appList.begin();
1641 //SG_LOG(SG_ATC, SG_WARN, "Warning - unable to remove aircraft " << id << " from appList in FGTower");
1645 // Returns true if successful
1646 bool FGTower::RemoveFromRwyList(const string& id) {
1647 tower_plane_rec_list_iterator twrItr;
1648 for(twrItr = rwyList.begin(); twrItr != rwyList.end(); twrItr++) {
1649 TowerPlaneRec* tpr = *twrItr;
1650 if(tpr->plane.callsign == id) {
1651 rwyList.erase(twrItr);
1652 rwyListItr = rwyList.begin();
1656 //SG_LOG(SG_ATC, SG_WARN, "Warning - unable to remove aircraft " << id << " from rwyList in FGTower");
1661 // Add a tower plane rec with ETA to the traffic list in the correct position ETA-wise
1662 // and set nextOnRwy if so.
1663 // Returns true if this could cause a threshold ETA conflict with other traffic, false otherwise.
1664 // For planes holding they are put in the first position with time to go, and the return value is
1665 // true if in the first position (nextOnRwy) and false otherwise.
1666 // See the comments in FGTower::doThresholdUseOrder for notes on the ordering
1667 bool FGTower::AddToTrafficList(TowerPlaneRec* t, bool holding) {
1668 //cout << "ADD: " << trafficList.size();
1669 //cout << "AddToTrafficList called, currently size = " << trafficList.size() << ", holding = " << holding << endl;
1670 double separation_time = 90.0; // seconds - this is currently a guess for light plane separation, and includes a few seconds for a holding plane to taxi onto the rwy.
1671 double departure_sep_time = 60.0; // Separation time behind departing airplanes. Comments above also apply.
1672 bool conflict = false;
1673 double lastETA = 0.0;
1674 bool firstTime = true;
1675 // FIXME - make this more robust for different plane types eg. light following heavy.
1676 tower_plane_rec_list_iterator twrItr;
1677 //twrItr = trafficList.begin();
1679 for(twrItr = trafficList.begin(); twrItr != trafficList.end(); twrItr++) {
1680 //if(twrItr == trafficList.end()) {
1682 // trafficList.push_back(t);
1683 // return(holding ? firstTime : conflict);
1685 TowerPlaneRec* tpr = *twrItr;
1687 //cout << (tpr->isUser ? "USER!\n" : "NOT user\n");
1688 //cout << "tpr->eta - lastETA = " << tpr->eta - lastETA << '\n';
1689 double dep_allowance = (timeSinceLastDeparture < departure_sep_time ? departure_sep_time - timeSinceLastDeparture : 0.0);
1690 double slot_time = (firstTime ? separation_time + dep_allowance : separation_time + departure_sep_time);
1691 // separation_time + departure_sep_time in the above accounts for the fact that the arrival could be touch and go,
1692 // and if not needs time to clear the rwy anyway.
1693 if(tpr->eta - lastETA > slot_time) {
1694 t->nextOnRwy = firstTime;
1695 trafficList.insert(twrItr, t);
1696 //cout << "\tH\t" << trafficList.size() << '\n';
1701 if(t->eta < tpr->eta) {
1702 // Ugg - this one's tricky.
1703 // It depends on what the two planes are doing and whether there's a conflict what we do.
1704 if(tpr->eta - t->eta > separation_time) { // No probs, plane 2 can squeeze in before plane 1 with no apparent conflict
1705 if(tpr->nextOnRwy) {
1706 tpr->nextOnRwy = false;
1707 t->nextOnRwy = true;
1709 trafficList.insert(twrItr, t);
1710 } else { // Ooops - this ones tricky - we have a potential conflict!
1712 // HACK - just add anyway for now and flag conflict - TODO - FIX THIS using CIRCUIT/STRAIGHT_IN and VFR/IFR precedence rules.
1713 if(tpr->nextOnRwy) {
1714 tpr->nextOnRwy = false;
1715 t->nextOnRwy = true;
1717 trafficList.insert(twrItr, t);
1719 //cout << "\tC\t" << trafficList.size() << '\n';
1726 // If we get here we must be at the end of the list, or maybe the list is empty.
1727 if(!trafficList.size()) {
1728 t->nextOnRwy = true;
1729 // conflict and firstTime should be false and true respectively in this case anyway.
1731 t->nextOnRwy = false;
1733 trafficList.push_back(t);
1734 //cout << "\tE\t" << trafficList.size() << endl;
1735 return(holding ? firstTime : conflict);
1738 // Add a tower plane rec with ETA to the circuit list in the correct position ETA-wise
1739 // Returns true if this might cause a separation conflict (based on ETA) with other traffic, false otherwise.
1740 // Safe to add a plane that is already in - planes with the same callsign are not added.
1741 bool FGTower::AddToCircuitList(TowerPlaneRec* t) {
1743 //cout << "**********************************************\n";
1744 //cout << "AddToCircuitList called with NULL pointer!!!!!\n";
1745 //cout << "**********************************************\n";
1748 //cout << "ADD: " << circuitList.size();
1749 //cout << ident << " AddToCircuitList called for " << t->plane.callsign << ", currently size = " << circuitList.size() << endl;
1750 double separation_time = 60.0; // seconds - this is currently a guess for light plane separation, and includes a few seconds for a holding plane to taxi onto the rwy.
1751 bool conflict = false;
1752 tower_plane_rec_list_iterator twrItr;
1753 // First check if the plane is already in the list
1754 //cout << "A" << endl;
1755 //cout << "Checking whether " << t->plane.callsign << " is already in circuit list..." << endl;
1756 //cout << "B" << endl;
1757 for(twrItr = circuitList.begin(); twrItr != circuitList.end(); twrItr++) {
1758 if((*twrItr)->plane.callsign == t->plane.callsign) {
1759 //cout << "In list - returning...\n";
1763 //cout << "Not in list - adding..." << endl;
1765 for(twrItr = circuitList.begin(); twrItr != circuitList.end(); twrItr++) {
1766 TowerPlaneRec* tpr = *twrItr;
1767 //cout << tpr->plane.callsign << " eta is " << tpr->eta << '\n';
1768 //cout << "New eta is " << t->eta << '\n';
1769 if(t->eta < tpr->eta) {
1770 // Ugg - this one's tricky.
1771 // It depends on what the two planes are doing and whether there's a conflict what we do.
1772 if(tpr->eta - t->eta > separation_time) { // No probs, plane 2 can squeeze in before plane 1 with no apparent conflict
1773 circuitList.insert(twrItr, t);
1774 circuitListItr = circuitList.begin();
1775 } else { // Ooops - this ones tricky - we have a potential conflict!
1777 // HACK - just add anyway for now and flag conflict.
1778 circuitList.insert(twrItr, t);
1779 circuitListItr = circuitList.begin();
1781 //cout << "\tC\t" << circuitList.size() << '\n';
1785 // If we get here we must be at the end of the list, or maybe the list is empty.
1786 //cout << ident << " adding " << t->plane.callsign << " to circuitList" << endl;
1787 circuitList.push_back(t); // TODO - check the separation with the preceding plane for the conflict flag.
1788 circuitListItr = circuitList.begin();
1789 //cout << "\tE\t" << circuitList.size() << endl;
1793 // Add to vacated list only if not already present
1794 void FGTower::AddToVacatedList(TowerPlaneRec* t) {
1795 tower_plane_rec_list_iterator twrItr;
1797 for(twrItr = vacatedList.begin(); twrItr != vacatedList.end(); twrItr++) {
1798 if((*twrItr)->plane.callsign == t->plane.callsign) {
1803 vacatedList.push_back(t);
1806 void FGTower::AddToHoldingList(TowerPlaneRec* t) {
1807 tower_plane_rec_list_iterator it, end = holdList.end();
1808 for (it = holdList.begin(); it != end; ++it) {
1809 if ((*it)->plane.callsign == t->plane.callsign)
1812 holdList.push_back(t);
1816 // Calculate the eta of a plane to the threshold.
1817 // For ground traffic this is the fastest they can get there.
1818 // For air traffic this is the middle approximation.
1819 void FGTower::CalcETA(TowerPlaneRec* tpr, bool printout) {
1820 // For now we'll be very crude and hardwire expected speeds to C172-like values
1821 // The speeds below are specified in knots IAS and then converted to m/s
1822 double app_ias = 100.0 * 0.514444; // Speed during straight-in approach
1823 double circuit_ias = 80.0 * 0.514444; // Speed around circuit
1824 double final_ias = 70.0 * 0.514444; // Speed during final approach
1827 //cout << "In CalcETA, airplane ident = " << tpr->plane.callsign << '\n';
1828 //cout << (tpr->isUser ? "USER\n" : "AI\n");
1832 // Sign convention - dist_out is -ve for approaching planes and +ve for departing planes
1833 // dist_across is +ve in the pattern direction - ie a plane correctly on downwind will have a +ve dist_across
1835 Point3D op = ortho.ConvertToLocal(tpr->pos);
1837 //if(!tpr->isUser) cout << "Orthopos is " << op.x() << ", " << op.y() << ' ';
1838 //cout << "opType is " << tpr->opType << '\n';
1840 double dist_out_m = op.y();
1841 double dist_across_m = fabs(op.x()); // The fabs is a hack to cope with the fact that we don't know the circuit direction yet
1842 //cout << "Doing ETA calc for " << tpr->plane.callsign << '\n';
1844 if(tpr->opType == STRAIGHT_IN || tpr->opType == INBOUND) {
1845 //cout << "CASE 1\n";
1846 double dist_to_go_m = sqrt((dist_out_m * dist_out_m) + (dist_across_m * dist_across_m));
1847 if(dist_to_go_m < 1000) {
1848 tpr->eta = dist_to_go_m / final_ias;
1850 tpr->eta = (1000.0 / final_ias) + ((dist_to_go_m - 1000.0) / app_ias);
1852 } else if(tpr->opType == CIRCUIT || tpr->opType == TTT_UNKNOWN) { // Hack alert - UNKNOWN has sort of been added here as a temporary hack.
1853 //cout << "CASE 2\n";
1854 // It's complicated - depends on if base leg is delayed or not
1856 //cout << "Leg = " << tpr->leg << '\n';
1858 if(tpr->leg == LANDING_ROLL) {
1860 } else if((tpr->leg == FINAL) || (tpr->leg == TURN4)) {
1861 //cout << "dist_out_m = " << dist_out_m << '\n';
1862 tpr->eta = fabs(dist_out_m) / final_ias;
1863 } else if((tpr->leg == BASE) || (tpr->leg == TURN3)) {
1864 tpr->eta = (fabs(dist_out_m) / final_ias) + (dist_across_m / circuit_ias);
1866 // Need to calculate where base leg is likely to be
1867 // FIXME - for now I'll hardwire it to 1000m which is what AILocalTraffic uses!!!
1868 // TODO - as a matter of design - AILocalTraffic should get the nominal no-traffic base turn distance from Tower, since in real life the published pattern might differ from airport to airport
1869 double nominal_base_dist_out_m = -1000;
1870 double current_base_dist_out_m;
1871 if(!GetBaseConstraint(current_base_dist_out_m)) {
1872 current_base_dist_out_m = nominal_base_dist_out_m;
1874 //cout << "current_base_dist_out_m = " << current_base_dist_out_m << '\n';
1875 double nominal_dist_across_m = 1000; // Hardwired value from AILocalTraffic
1876 double current_dist_across_m;
1877 if(!GetDownwindConstraint(current_dist_across_m)) {
1878 current_dist_across_m = nominal_dist_across_m;
1880 double nominal_cross_dist_out_m = 2000; // Bit of a guess - AI plane turns to crosswind at 700ft agl.
1881 tpr->eta = fabs(current_base_dist_out_m) / final_ias; // final
1882 //cout << "a = " << tpr->eta << '\n';
1883 if((tpr->leg == DOWNWIND) || (tpr->leg == TURN2)) {
1884 tpr->eta += dist_across_m / circuit_ias;
1885 //cout << "b = " << tpr->eta << '\n';
1886 tpr->eta += fabs(current_base_dist_out_m - dist_out_m) / circuit_ias;
1887 //cout << "c = " << tpr->eta << '\n';
1888 } else if((tpr->leg == CROSSWIND) || (tpr->leg == TURN1)) {
1889 //cout << "CROSSWIND calc: ";
1890 //cout << tpr->eta << ' ';
1891 if(dist_across_m > nominal_dist_across_m) {
1892 tpr->eta += dist_across_m / circuit_ias;
1895 tpr->eta += nominal_dist_across_m / circuit_ias;
1898 //cout << tpr->eta << ' ';
1899 // should we use the dist across of the previous plane if there is previous still on downwind?
1900 //if(printout) cout << "bb = " << tpr->eta << '\n';
1901 if(dist_out_m > nominal_cross_dist_out_m) {
1902 tpr->eta += fabs(current_base_dist_out_m - dist_out_m) / circuit_ias;
1905 tpr->eta += fabs(current_base_dist_out_m - nominal_cross_dist_out_m) / circuit_ias;
1908 //cout << tpr->eta << ' ';
1909 //if(printout) cout << "cc = " << tpr->eta << '\n';
1910 if(nominal_dist_across_m > dist_across_m) {
1911 tpr->eta += (nominal_dist_across_m - dist_across_m) / circuit_ias;
1917 //cout << tpr->eta << '\n';
1918 //if(printout) cout << "dd = " << tpr->eta << '\n';
1920 // We've only just started - why not use a generic estimate?
1925 // cout << "ETA = " << tpr->eta << '\n';
1927 //if(!tpr->isUser) cout << tpr->plane.callsign << '\t' << tpr->eta << '\n';
1934 // Calculate the distance of a plane to the threshold in meters
1935 // TODO - Modify to calculate flying distance of a plane in the circuit
1936 double FGTower::CalcDistOutM(TowerPlaneRec* tpr) {
1937 return(dclGetHorizontalSeparation(rwy.threshold_pos, tpr->pos));
1941 // Calculate the distance of a plane to the threshold in miles
1942 // TODO - Modify to calculate flying distance of a plane in the circuit
1943 double FGTower::CalcDistOutMiles(TowerPlaneRec* tpr) {
1944 return(CalcDistOutM(tpr) / 1600.0); // FIXME - use a proper constant if possible.
1948 // Iterate through all the lists, update the position of, and call CalcETA for all the planes.
1949 void FGTower::doThresholdETACalc() {
1950 //cout << "Entering doThresholdETACalc..." << endl;
1951 tower_plane_rec_list_iterator twrItr;
1952 // Do the approach list first
1953 for(twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
1954 TowerPlaneRec* tpr = *twrItr;
1955 if(!(tpr->isUser)) tpr->pos = tpr->planePtr->GetPos();
1959 // Then the circuit list
1960 //cout << "Circuit list size is " << circuitList.size() << '\n';
1961 for(twrItr = circuitList.begin(); twrItr != circuitList.end(); twrItr++) {
1962 TowerPlaneRec* tpr = *twrItr;
1963 if(!(tpr->isUser)) tpr->pos = tpr->planePtr->GetPos();
1967 //cout << "Done doThresholdETCCalc" << endl;
1971 // Check that the planes in traffic list are correctly ordered,
1972 // that the nearest (timewise) is flagged next on rwy, and return
1973 // true if any threshold use conflicts are detected, false otherwise.
1974 bool FGTower::doThresholdUseOrder() {
1975 //cout << "Entering doThresholdUseOrder..." << endl;
1976 bool conflict = false;
1978 // Wipe out traffic list, go through circuit, app and hold list, and reorder them in traffic list.
1979 // Here's the rather simplistic assumptions we're using:
1980 // Currently all planes are assumed to be GA light singles with corresponding speeds and separation times.
1981 // In order of priority for runway use:
1982 // STRAIGHT_IN > CIRCUIT > HOLDING_FOR_DEPARTURE
1983 // No modification of planes speeds occurs - conflicts are resolved by delaying turn for base,
1984 // and holding planes until a space.
1985 // When calculating if a holding plane can use the runway, time clearance from last departure
1986 // as well as time clearance to next arrival must be considered.
1988 trafficList.clear();
1990 tower_plane_rec_list_iterator twrItr;
1991 // Do the approach list first
1992 //if(ident == "KRHV") cout << "A" << flush;
1993 for(twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
1994 TowerPlaneRec* tpr = *twrItr;
1995 //if(ident == "KRHV") cout << tpr->plane.callsign << '\n';
1996 conflict = AddToTrafficList(tpr);
1998 // Then the circuit list
1999 //if(ident == "KRHV") cout << "C" << flush;
2000 for(twrItr = circuitList.begin(); twrItr != circuitList.end(); twrItr++) {
2001 TowerPlaneRec* tpr = *twrItr;
2002 //if(ident == "KRHV") cout << tpr->plane.callsign << '\n';
2003 conflict = AddToTrafficList(tpr);
2005 // And finally the hold list
2006 //cout << "H" << endl;
2007 for(twrItr = holdList.begin(); twrItr != holdList.end(); twrItr++) {
2008 TowerPlaneRec* tpr = *twrItr;
2009 AddToTrafficList(tpr, true);
2014 //if(ident == "KRHV") {
2016 for(twrItr = trafficList.begin(); twrItr != trafficList.end(); twrItr++) {
2017 TowerPlaneRec* tpr = *twrItr;
2018 cout << tpr->plane.callsign << '\t' << tpr->eta << '\t';
2023 //cout << "Done doThresholdUseOrder" << endl;
2028 // Return the ETA of plane no. list_pos (1-based) in the traffic list.
2029 // i.e. list_pos = 1 implies next to use runway.
2030 double FGTower::GetTrafficETA(unsigned int list_pos, bool printout) {
2031 if(trafficList.size() < list_pos) {
2035 tower_plane_rec_list_iterator twrItr;
2036 twrItr = trafficList.begin();
2037 for(unsigned int i = 1; i < list_pos; i++, twrItr++);
2038 TowerPlaneRec* tpr = *twrItr;
2039 CalcETA(tpr, printout);
2040 //cout << "ETA returned = " << tpr->eta << '\n';
2045 void FGTower::ContactAtHoldShort(const PlaneRec& plane, FGAIPlane* requestee, tower_traffic_type operation) {
2046 // HACK - assume that anything contacting at hold short is new for now - FIXME LATER
2047 TowerPlaneRec* t = new TowerPlaneRec;
2049 t->planePtr = requestee;
2050 t->holdShortReported = true;
2051 t->clearedToLineUp = false;
2052 t->clearedToTakeOff = false;
2053 t->opType = operation;
2054 t->pos = requestee->GetPos();
2056 //cout << "Hold Short reported by " << plane.callsign << '\n';
2057 SG_LOG(SG_ATC, SG_BULK, "Hold Short reported by " << plane.callsign);
2060 bool next = AddToTrafficList(t, true);
2062 double teta = GetTrafficETA(2);
2064 t->clearanceCounter = 7.0; // This reduces the delay before response to 3 secs if an immediate takeoff is reqd
2065 //cout << "Reducing response time to request due imminent traffic\n";
2070 // TODO - possibly add the reduced interval to clearance when immediate back in under the new scheme
2072 holdList.push_back(t);
2074 responseReqd = true;
2077 // Register the presence of an AI plane at a point where contact would already have been made in real life
2078 // CAUTION - currently it is assumed that this plane's callsign is unique - it is up to AIMgr to generate unique callsigns.
2079 void FGTower::RegisterAIPlane(const PlaneRec& plane, FGAIPlane* ai, const tower_traffic_type& op, const PatternLeg& lg) {
2080 // At the moment this is only going to be tested with inserting an AI plane on downwind
2081 TowerPlaneRec* t = new TowerPlaneRec;
2086 t->pos = ai->GetPos();
2090 if(op == CIRCUIT && lg != LEG_UNKNOWN) {
2091 AddToCircuitList(t);
2096 doThresholdUseOrder();
2099 void FGTower::DeregisterAIPlane(const string& id) {
2103 // Contact tower for VFR approach
2104 // eg "Cessna Charlie Foxtrot Golf Foxtrot Sierra eight miles South of the airport for full stop with Bravo"
2105 // This function probably only called via user interaction - AI planes will have an overloaded function taking a planerec.
2106 // opt defaults to AIP_LT_UNKNOWN
2107 void FGTower::VFRArrivalContact(const string& ID, const LandingType& opt) {
2108 //cout << "USER Request Landing Clearance called for ID " << ID << '\n';
2110 // For now we'll assume that the user is a light plane and can get him/her to join the circuit if necessary.
2113 string usercall = fgGetString("/sim/user/callsign");
2114 if(ID == "USER" || ID == usercall) {
2115 t = FindPlane(usercall);
2117 //cout << "NOT t\n";
2118 t = new TowerPlaneRec;
2120 t->pos.setlon(user_lon_node->getDoubleValue());
2121 t->pos.setlat(user_lat_node->getDoubleValue());
2122 t->pos.setelev(user_elev_node->getDoubleValue());
2125 // Oops - the plane is already registered with this tower - maybe we took off and flew a giant circuit without
2126 // quite getting out of tower airspace - just ignore for now and treat as new arrival.
2127 // TODO - Maybe should remove from departure and circuit list if in there though!!
2130 // Oops - something has gone wrong - put out a warning
2131 cout << "WARNING - FGTower::VFRContact(string ID, LandingType lt) called with ID " << ID << " which does not appear to be the user.\n";
2137 // Calculate where the plane is in relation to the active runway and it's circuit
2138 // and set the op-type as appropriate.
2140 // HACK - to get up and running I'm going to assume that the user contacts tower on a staight-in final for now.
2141 t->opType = STRAIGHT_IN;
2143 t->plane.type = GA_SINGLE; // FIXME - Another assumption!
2144 t->plane.callsign = usercall;
2146 t->vfrArrivalReported = true;
2147 responseReqd = true;
2149 appList.push_back(t); // Not necessarily permanent
2150 appListItr = appList.begin();
2151 AddToTrafficList(t);
2153 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_ARRIVAL, TOWER);
2154 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_ARRIVAL_FULL_STOP, TOWER);
2155 current_atcdialog->remove_entry(ident, USER_REQUEST_VFR_ARRIVAL_TOUCH_AND_GO, TOWER);
2158 // landingType defaults to AIP_LT_UNKNOWN
2159 void FGTower::VFRArrivalContact(const PlaneRec& plane, FGAIPlane* requestee, const LandingType& lt) {
2160 //cout << "VFRArrivalContact called for plane " << plane.callsign << " at " << ident << '\n';
2161 // Possible hack - assume this plane is new for now - TODO - should check really
2162 TowerPlaneRec* t = new TowerPlaneRec;
2164 t->planePtr = requestee;
2165 t->landingType = lt;
2166 t->pos = requestee->GetPos();
2168 //cout << "Hold Short reported by " << plane.callsign << '\n';
2169 SG_LOG(SG_ATC, SG_BULK, "VFR arrival contact made by " << plane.callsign);
2170 //cout << "VFR arrival contact made by " << plane.callsign << '\n';
2172 // HACK - to get up and running I'm going to assume a staight-in final for now.
2173 t->opType = STRAIGHT_IN;
2175 t->vfrArrivalReported = true;
2176 responseReqd = true;
2178 //cout << "Before adding, appList.size = " << appList.size() << " at " << ident << '\n';
2179 appList.push_back(t); // Not necessarily permanent
2180 appListItr = appList.begin();
2181 //cout << "After adding, appList.size = " << appList.size() << " at " << ident << '\n';
2182 AddToTrafficList(t);
2185 void FGTower::RequestDepartureClearance(const string& ID) {
2186 //cout << "Request Departure Clearance called...\n";
2189 void FGTower::RequestTakeOffClearance(const string& ID) {
2192 uid = fgGetString("/sim/user/callsign");
2193 current_atcdialog->remove_entry(ident, USER_REQUEST_TAKE_OFF, TOWER);
2195 TowerPlaneRec* t = FindPlane(uid);
2197 if(!(t->clearedToTakeOff)) {
2199 t->lineUpReported=true;
2200 responseReqd = true;
2204 SG_LOG(SG_ATC, SG_WARN, "WARNING: Unable to find plane " << ID << " in FGTower::RequestTakeOffClearance(...)");
2208 void FGTower::ReportFinal(const string& ID) {
2209 //cout << "Report Final Called at tower " << ident << " by plane " << ID << '\n';
2212 uid = fgGetString("/sim/user/callsign");
2213 current_atcdialog->remove_entry(ident, USER_REPORT_3_MILE_FINAL, TOWER);
2215 TowerPlaneRec* t = FindPlane(uid);
2217 t->finalReported = true;
2218 t->finalAcknowledged = false;
2219 if(!(t->clearedToLand)) {
2220 responseReqd = true;
2222 // possibly respond with wind even if already cleared to land?
2223 t->finalReported = false;
2224 t->finalAcknowledged = true;
2225 // HACK!! - prevents next reporting being misinterpreted as this one.
2228 SG_LOG(SG_ATC, SG_WARN, "WARNING: Unable to find plane " << ID << " in FGTower::ReportFinal(...)");
2232 void FGTower::ReportLongFinal(const string& ID) {
2235 uid = fgGetString("/sim/user/callsign");
2236 current_atcdialog->remove_entry(ident, USER_REPORT_3_MILE_FINAL, TOWER);
2238 TowerPlaneRec* t = FindPlane(uid);
2240 t->longFinalReported = true;
2241 t->longFinalAcknowledged = false;
2242 if(!(t->clearedToLand)) {
2243 responseReqd = true;
2244 } // possibly respond with wind even if already cleared to land?
2246 SG_LOG(SG_ATC, SG_WARN, "WARNING: Unable to find plane " << ID << " in FGTower::ReportLongFinal(...)");
2250 //void FGTower::ReportOuterMarker(string ID);
2251 //void FGTower::ReportMiddleMarker(string ID);
2252 //void FGTower::ReportInnerMarker(string ID);
2254 void FGTower::ReportRunwayVacated(const string& ID) {
2255 //cout << "Report Runway Vacated Called at tower " << ident << " by plane " << ID << '\n';
2258 uid = fgGetString("/sim/user/callsign");
2259 current_atcdialog->remove_entry(ident, USER_REPORT_RWY_VACATED, TOWER);
2261 TowerPlaneRec* t = FindPlane(uid);
2263 //cout << "Found it...\n";
2264 t->rwyVacatedReported = true;
2265 responseReqd = true;
2267 SG_LOG(SG_ATC, SG_WARN, "WARNING: Unable to find plane " << ID << " in FGTower::ReportRunwayVacated(...)");
2268 SG_LOG(SG_ATC, SG_ALERT, "A WARNING: Unable to find plane " << ID << " in FGTower::ReportRunwayVacated(...)");
2269 //cout << "WARNING: Unable to find plane " << ID << " in FGTower::ReportRunwayVacated(...)\n";
2273 TowerPlaneRec* FGTower::FindPlane(const string& ID) {
2274 //cout << "FindPlane called for " << ID << "...\n";
2275 tower_plane_rec_list_iterator twrItr;
2276 // Do the approach list first
2277 for(twrItr = appList.begin(); twrItr != appList.end(); twrItr++) {
2278 //cout << "appList callsign is " << (*twrItr)->plane.callsign << '\n';
2279 if((*twrItr)->plane.callsign == ID) return(*twrItr);
2281 // Then the circuit list
2282 for(twrItr = circuitList.begin(); twrItr != circuitList.end(); twrItr++) {
2283 //cout << "circuitList callsign is " << (*twrItr)->plane.callsign << '\n';
2284 if((*twrItr)->plane.callsign == ID) return(*twrItr);
2286 // Then the runway list
2287 //cout << "rwyList.size() is " << rwyList.size() << '\n';
2288 for(twrItr = rwyList.begin(); twrItr != rwyList.end(); twrItr++) {
2289 //cout << "rwyList callsign is " << (*twrItr)->plane.callsign << '\n';
2290 if((*twrItr)->plane.callsign == ID) return(*twrItr);
2293 for(twrItr = holdList.begin(); twrItr != holdList.end(); twrItr++) {
2294 if((*twrItr)->plane.callsign == ID) return(*twrItr);
2296 // And finally the vacated list
2297 for(twrItr = vacatedList.begin(); twrItr != vacatedList.end(); twrItr++) {
2298 //cout << "vacatedList callsign is " << (*twrItr)->plane.callsign << '\n';
2299 if((*twrItr)->plane.callsign == ID) return(*twrItr);
2301 SG_LOG(SG_ATC, SG_WARN, "Unable to find " << ID << " in FGTower::FindPlane(...)");
2306 void FGTower::RemovePlane(const string& ID) {
2307 //cout << ident << " RemovePlane called for " << ID << '\n';
2308 // We have to be careful here - we want to erase the plane from all lists it is in,
2309 // but we can only delete it once, AT THE END.
2310 TowerPlaneRec* t = NULL;
2311 tower_plane_rec_list_iterator twrItr;
2312 for(twrItr = appList.begin(); twrItr != appList.end();) {
2313 if((*twrItr)->plane.callsign == ID) {
2315 twrItr = appList.erase(twrItr);
2316 appListItr = appList.begin();
2317 // HACK: aircraft are sometimes more than once in a list, so we need to
2318 // remove them all before we can delete the TowerPlaneRec class
2323 for(twrItr = depList.begin(); twrItr != depList.end();) {
2324 if((*twrItr)->plane.callsign == ID) {
2326 twrItr = depList.erase(twrItr);
2327 depListItr = depList.begin();
2331 for(twrItr = circuitList.begin(); twrItr != circuitList.end();) {
2332 if((*twrItr)->plane.callsign == ID) {
2334 twrItr = circuitList.erase(twrItr);
2335 circuitListItr = circuitList.begin();
2339 for(twrItr = holdList.begin(); twrItr != holdList.end();) {
2340 if((*twrItr)->plane.callsign == ID) {
2342 twrItr = holdList.erase(twrItr);
2343 holdListItr = holdList.begin();
2347 for(twrItr = rwyList.begin(); twrItr != rwyList.end();) {
2348 if((*twrItr)->plane.callsign == ID) {
2350 twrItr = rwyList.erase(twrItr);
2351 rwyListItr = rwyList.begin();
2355 for(twrItr = vacatedList.begin(); twrItr != vacatedList.end();) {
2356 if((*twrItr)->plane.callsign == ID) {
2358 twrItr = vacatedList.erase(twrItr);
2359 vacatedListItr = vacatedList.begin();
2363 for(twrItr = trafficList.begin(); twrItr != trafficList.end();) {
2364 if((*twrItr)->plane.callsign == ID) {
2366 twrItr = trafficList.erase(twrItr);
2367 trafficListItr = trafficList.begin();
2371 // And finally, delete the record.
2375 void FGTower::ReportDownwind(const string& ID) {
2376 //cout << "ReportDownwind(...) called\n";
2379 uid = fgGetString("/sim/user/callsign");
2380 current_atcdialog->remove_entry(ident, USER_REPORT_DOWNWIND, TOWER);
2382 TowerPlaneRec* t = FindPlane(uid);
2384 t->downwindReported = true;
2385 responseReqd = true;
2386 // If the plane is in the app list, remove it and put it in the circuit list instead.
2387 // Ideally we might want to do this at the 2 mile report prior to 45 deg entry, but at
2388 // the moment that would b&gg?r up the constraint position calculations.
2389 RemoveFromAppList(ID);
2392 t->pos.setlon(user_lon_node->getDoubleValue());
2393 t->pos.setlat(user_lat_node->getDoubleValue());
2394 t->pos.setelev(user_elev_node->getDoubleValue());
2396 // ASSERT(t->planePtr != NULL);
2397 t->pos = t->planePtr->GetPos();
2400 AddToCircuitList(t);
2402 SG_LOG(SG_ATC, SG_WARN, "WARNING: Unable to find plane " << ID << " in FGTower::ReportDownwind(...)");
2406 void FGTower::ReportGoingAround(const string& ID) {
2409 uid = fgGetString("/sim/user/callsign");
2410 RemoveAllUserDialogOptions(); // TODO - it would be much more efficient if ATCDialog simply had a clear() function!!!
2411 current_atcdialog->add_entry(ident, "@AP Tower, @CS Downwind @RW", "Report Downwind", TOWER, (int)USER_REPORT_DOWNWIND);
2413 TowerPlaneRec* t = FindPlane(uid);
2415 //t->goAroundReported = true; // No need to set this until we start responding to it.
2416 responseReqd = false; // might change in the future but for now we'll not distract them during the go-around.
2417 // If the plane is in the app list, remove it and put it in the circuit list instead.
2418 RemoveFromAppList(ID);
2421 t->pos.setlon(user_lon_node->getDoubleValue());
2422 t->pos.setlat(user_lat_node->getDoubleValue());
2423 t->pos.setelev(user_elev_node->getDoubleValue());
2425 // ASSERT(t->planePtr != NULL);
2426 t->pos = t->planePtr->GetPos();
2429 AddToCircuitList(t);
2431 SG_LOG(SG_ATC, SG_WARN, "WARNING: Unable to find plane " << ID << " in FGTower::ReportDownwind(...)");
2435 string FGTower::GenText(const string& m, int c) {
2436 const int cmax = 300;
2446 string usercall = fgGetString("/sim/user/callsign");
2447 TowerPlaneRec* t = FindPlane(responseID);
2449 //transmission_list_type tmissions = transmissionlist_station[station];
2450 //transmission_list_iterator current = tmissions.begin();
2451 //transmission_list_iterator last = tmissions.end();
2453 //for ( ; current != last ; ++current ) {
2454 // if ( current->get_code().c1 == code.c1 &&
2455 // current->get_code().c2 == code.c2 &&
2456 // current->get_code().c3 == code.c3 ) {
2458 //if ( ttext ) message = current->get_transtext();
2459 //else message = current->get_menutext();
2460 strcpy( &mes[0], m.c_str() );
2462 // Replace all the '@' parameters with the actual text.
2463 int check = 0; // If mes gets overflowed the while loop can go infinite
2464 double gp = fgGetFloat("/gear/gear/position-norm");
2465 while ( strchr(&mes[0], crej) != NULL ) { // ie. loop until no more occurances of crej ('@') found
2466 pos = strchr( &mes[0], crej );
2467 memmove(&tag[0], pos, 3);
2471 for ( i=0; i<cmax; i++ ) {
2472 if ( mes[i] == crej ) {
2477 strncpy( &dum[0], &mes[0], len );
2480 if ( strcmp ( tag, "@ST" ) == 0 )
2481 //strcat( &dum[0], tpars.station.c_str() );
2482 strcat(&dum[0], ident.c_str());
2483 else if ( strcmp ( tag, "@AP" ) == 0 )
2484 //strcat( &dum[0], tpars.airport.c_str() );
2485 strcat(&dum[0], name.c_str());
2486 else if ( strcmp ( tag, "@CS" ) == 0 )
2487 //strcat( &dum[0], tpars.callsign.c_str() );
2488 strcat(&dum[0], usercall.c_str());
2489 else if ( strcmp ( tag, "@TD" ) == 0 ) {
2491 if ( tpars.tdir == 1 ) {
2492 char buf[] = "left";
2493 strcat( &dum[0], &buf[0] );
2496 char buf[] = "right";
2497 strcat( &dum[0], &buf[0] );
2501 else if ( strcmp ( tag, "@HE" ) == 0 ) {
2504 sprintf( buf, "%i", (int)(tpars.heading) );
2505 strcat( &dum[0], &buf[0] );
2508 else if ( strcmp ( tag, "@AT" ) == 0 ) { // ATIS ID
2511 sprintf( buf, "%i", (int)(tpars.heading) );
2512 strcat( &dum[0], &buf[0] );
2514 double f = globals->get_ATC_mgr()->GetFrequency(ident, ATIS) / 100.0;
2517 atis_id = ", information " + GetATISID();
2518 strcat( &dum[0], atis_id.c_str() );
2521 else if ( strcmp ( tag, "@VD" ) == 0 ) {
2523 if ( tpars.VDir == 1 ) {
2524 char buf[] = "Descend and maintain";
2525 strcat( &dum[0], &buf[0] );
2527 else if ( tpars.VDir == 2 ) {
2528 char buf[] = "Maintain";
2529 strcat( &dum[0], &buf[0] );
2531 else if ( tpars.VDir == 3 ) {
2532 char buf[] = "Climb and maintain";
2533 strcat( &dum[0], &buf[0] );
2537 else if ( strcmp ( tag, "@AL" ) == 0 ) {
2540 sprintf( buf, "%i", (int)(tpars.alt) );
2541 strcat( &dum[0], &buf[0] );
2544 else if ( strcmp ( tag, "@TO" ) == 0 ) { // Requesting take-off or departure clearance
2547 tmp = "Ready for take-off";
2549 if (OnAnyRunway(Point3D(user_lon_node->getDoubleValue(),
2550 user_lat_node->getDoubleValue(), 0.0),true)) {
2551 tmp = "Request take-off clearance";
2553 tmp = "Request departure clearance";
2556 strcat(&dum[0], tmp.c_str());
2558 else if ( strcmp ( tag, "@MI" ) == 0 ) {
2560 //sprintf( buf, "%3.1f", tpars.miles );
2561 int dist_miles = (int)dclGetHorizontalSeparation(Point3D(lon, lat, elev), Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), user_elev_node->getDoubleValue())) / 1600;
2562 sprintf(buf, "%i", dist_miles);
2563 strcat( &dum[0], &buf[0] );
2565 else if ( strcmp ( tag, "@FR" ) == 0 ) {
2568 sprintf( buf, "%6.2f", tpars.freq );
2569 strcat( &dum[0], &buf[0] );
2572 else if ( strcmp ( tag, "@RW" ) == 0 ) {
2573 strcat(&dum[0], ConvertRwyNumToSpokenString(activeRwy).c_str());
2575 else if ( strcmp ( tag, "@GR" ) == 0 ) { // Gear position (on final)
2576 if(t->gearWasUp && gp > 0.99) {
2577 strcat(&dum[0], ", gear down, ready to land.");
2580 else if(strcmp(tag, "@CD") == 0) { // @CD = compass direction
2581 double h = GetHeadingFromTo(Point3D(lon, lat, elev), Point3D(user_lon_node->getDoubleValue(), user_lat_node->getDoubleValue(), user_elev_node->getDoubleValue()));
2582 while(h < 0.0) h += 360.0;
2583 while(h > 360.0) h -= 360.0;
2584 if(h < 22.5 || h > 337.5) {
2585 strcat(&dum[0], "North");
2586 } else if(h < 67.5) {
2587 strcat(&dum[0], "North-East");
2588 } else if(h < 112.5) {
2589 strcat(&dum[0], "East");
2590 } else if(h < 157.5) {
2591 strcat(&dum[0], "South-East");
2592 } else if(h < 202.5) {
2593 strcat(&dum[0], "South");
2594 } else if(h < 247.5) {
2595 strcat(&dum[0], "South-West");
2596 } else if(h < 292.5) {
2597 strcat(&dum[0], "West");
2599 strcat(&dum[0], "North-West");
2602 cout << "Tag " << tag << " not found" << endl;
2605 strcat( &dum[0], &mes[len+3] );
2606 strcpy( &mes[0], &dum[0] );
2610 SG_LOG(SG_ATC, SG_WARN, "WARNING: Possibly endless loop terminated in FGTransmissionlist::gen_text(...)");
2615 //cout << mes << endl;
2619 return mes[0] ? mes : "No transmission found";
2622 string FGTower::GetWeather() {
2623 std::ostringstream msg;
2626 double hdg = wind_from_hdg->getDoubleValue();
2627 double speed = wind_speed_knots->getDoubleValue();
2631 msg << "wind " << int(hdg) << " degrees at " << int(speed) << " knots";
2634 double visibility = fgGetDouble("/environment/visibility-m");
2635 if (visibility < 10000)
2636 msg << ", visibility " << int(visibility / 1609) << " miles";
2638 // pressure / altimeter
2639 double pressure = fgGetDouble("/environment/pressure-sea-level-inhg");
2640 msg << ", QFE " << fixed << setprecision(2) << pressure << ".";
2645 string FGTower::GetATISID() {
2646 int hours = fgGetInt("/sim/time/utc/hour");
2647 int phonetic_id = current_commlist->GetCallSign(ident, hours, 0);
2648 return GetPhoneticIdent(phonetic_id);
2651 ostream& operator << (ostream& os, tower_traffic_type ttt) {
2653 case(CIRCUIT): return(os << "CIRCUIT");
2654 case(INBOUND): return(os << "INBOUND");
2655 case(OUTBOUND): return(os << "OUTBOUND");
2656 case(TTT_UNKNOWN): return(os << "UNKNOWN");
2657 case(STRAIGHT_IN): return(os << "STRAIGHT_IN");
2659 return(os << "ERROR - Unknown switch in tower_traffic_type operator << ");
projects / flightgear.git / blob