src/Instrumentation/KLN89/kln89_page_apt.cxx

   1 // kln89_page_*.[ch]xx - this file is one of the "pages" that
   2 //                       are used in the KLN89 GPS unit simulation.
   3 //
   4 // Written by David Luff, started 2005.
   5 //
   6 // Copyright (C) 2005 - David C Luff - david.luff@nottingham.ac.uk
   7 //
   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.
  12 //
  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.
  17 //
  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.
  21 //
  22 // $Id$
  23
  24 #ifdef HAVE_CONFIG_H
  25 #  include "config.h"
  26 #endif
  27
  28 #include "kln89_page_apt.hxx"
  29 #include <ATCDCL/commlist.hxx>
  30 #include <Main/globals.hxx>
  31 #include <Airports/runways.hxx>
  32 #include <Airports/simple.hxx>
  33
  34 // This function is copied from Airports/runways.cxx
  35 // TODO - Make the original properly available and remove this instance!!!!
  36 // Return reverse rwy number
  37 // eg 01 -> 19
  38 // 03L -> 21R
  39 static string GetReverseRunwayNo(string rwyno) {
  40     // cout << "Original rwyno = " << rwyNo << '\n';
  41
  42     // standardize input number
  43     string tmp = rwyno.substr(1, 1);
  44     if (( tmp == "L" || tmp == "R" || tmp == "C" ) || (rwyno.size() == 1)) {
  45                 tmp = rwyno;
  46                 rwyno = "0" + tmp;
  47                 SG_LOG( SG_GENERAL, SG_INFO,
  48                         "Standardising rwy number from " << tmp << " to " << rwyno );
  49     }
  50
  51     char buf[4];
  52     int rn = atoi(rwyno.substr(0,2).c_str());
  53     rn += 18;
  54     while(rn > 36) {
  55                 rn -= 36;
  56     }
  57     sprintf(buf, "%02i", rn);
  58     if(rwyno.size() == 3) {
  59                 if(rwyno.substr(2,1) == "L") {
  60                         buf[2] = 'R';
  61                         buf[3] = '\0';
  62                 } else if (rwyno.substr(2,1) == "R") {
  63                         buf[2] = 'L';
  64                         buf[3] = '\0';
  65                 } else if (rwyno.substr(2,1) == "C") {
  66                         buf[2] = 'C';
  67                         buf[3] = '\0';
  68                 } else if (rwyno.substr(2,1) == "T") {
  69                         buf[2] = 'T';
  70                         buf[3] = '\0';
  71                 } else {
  72                         SG_LOG(SG_GENERAL, SG_ALERT, "Unknown runway code "
  73                         << rwyno << " passed to GetReverseRunwayNo(...)");
  74                 }
  75     }
  76     return(buf);
  77 }
  78
  79 KLN89AptPage::KLN89AptPage(KLN89* parent)
  80 : KLN89Page(parent) {
  81         _nSubPages = 8;
  82         _subPage = 0;
  83         _name = "APT";
  84         _apt_id = "KHWD";
  85         // Make sure that _last_apt_id doesn't match at startup to force airport data to be fetched on first update.
  86         _last_apt_id = "XXXX";
  87         _nRwyPages = 1;
  88         _curRwyPage = 0;
  89         _nFreqPages = 1;
  90         _curFreqPage = 0;
  91         ap = NULL;
  92         _iapStart = 0;
  93         _iafStart = 0;
  94         _fStart = 0;
  95         _iaps.clear();
  96         _iafDialog = false;
  97         _addDialog = false;
  98         _replaceDialog = false;
  99         _curIap = 0;
 100         _curIaf = 0;
 101 }
 102
 103 KLN89AptPage::~KLN89AptPage() {
 104 }
 105
 106 void KLN89AptPage::Update(double dt) {
 107         bool actPage = (_kln89->_activePage->GetName() == "ACT" ? true : false);
 108         bool multi;  // Not set by FindFirst...
 109         bool exact = false;
 110         if(_apt_id.size() == 4) exact = true;
 111         // TODO - move this search out to where the button is pressed, and cache the result!
 112         if(_apt_id != _last_apt_id || ap == NULL) ap = _kln89->FindFirstAptById(_apt_id, multi, exact);
 113         //if(np == NULL) cout << "NULL... ";
 114         //if(b == false) cout << "false...\n";
 115         /*
 116         if(np && b) {
 117                 cout << "VOR FOUND!\n";
 118         } else {
 119                 cout << ":-(\n";
 120         }
 121         */
 122
 123         if(ap) {
 124                 //cout << "Valid airport found! id = " << ap->getId() << ", elev = " << ap->getElevation() << '\n';
 125                 if(_apt_id != _last_apt_id) {
 126                         UpdateAirport(ap->getId());
 127                         _last_apt_id = _apt_id;
 128                         _curFreqPage = 0;
 129                         _curRwyPage = 0;
 130                 }
 131                 _apt_id = ap->getId();
 132                 if(_kln89->GetActiveWaypoint()) {
 133                         if(_apt_id == _kln89->GetActiveWaypoint()->id) {
 134                                 if(!(_kln89->_waypointAlert && _kln89->_blink)) {
 135                                         // Active waypoint arrow
 136                                         _kln89->DrawSpecialChar(4, 2, 0, 3);
 137                                 }
 138                         }
 139                 }
 140                 if(_kln89->_mode != KLN89_MODE_CRSR) {
 141                         if(!(_subPage == 7 && (_iafDialog || _addDialog || _replaceDialog))) {  // Don't draw the airport name when the IAP dialogs are active
 142                                 if(!_entInvert) {
 143                                         if(!actPage) {
 144                                                 _kln89->DrawText(ap->getId(), 2, 1, 3);
 145                                         } else {
 146                                                 // If it's the ACT page, The ID is shifted slightly right to make space for the waypoint index.
 147                                                 _kln89->DrawText(ap->getId(), 2, 4, 3);
 148                                                 char buf[3];
 149                                                 int n = snprintf(buf, 3, "%i", _kln89->GetActiveWaypointIndex() + 1);
 150                                                 _kln89->DrawText((string)buf, 2, 3 - n, 3);
 151                                         }
 152                                 } else {
 153                                         if(!_kln89->_blink) {
 154                                                 _kln89->DrawText(ap->getId(), 2, 1, 3, false, 99);
 155                                                 _kln89->DrawEnt();
 156                                         }
 157                                 }
 158                         }
 159                 }
 160                 if(_subPage == 0) {
 161                         // Name
 162                         _kln89->DrawText(ap->getName(), 2, 0, 2);
 163                         // Elevation
 164                         _kln89->DrawText(_kln89->_altUnits == GPS_ALT_UNITS_FT ? "ft" : "m", 2, 14, 3);
 165                         char buf[6];
 166                         int n = snprintf(buf, 5, "%i", (_kln89->_altUnits == GPS_ALT_UNITS_FT ? (int)(ap->getElevation()) : (int)((double)ap->getElevation() * SG_FEET_TO_METER)));
 167                         _kln89->DrawText((string)buf, 2, 14 - n, 3);
 168                         // Town
 169                         airport_id_str_map_iterator itr = _kln89->_airportTowns.find(_apt_id);
 170                         if(itr != _kln89->_airportTowns.end()) {
 171                                 _kln89->DrawText(itr->second, 2, 0, 1);
 172                         }
 173                         // State / Province / Country
 174                         itr = _kln89->_airportStates.find(_apt_id);
 175                         if(itr != _kln89->_airportStates.end()) {
 176                                 _kln89->DrawText(itr->second, 2, 0, 0);
 177                         }
 178                 } else if(_subPage == 1) {
 179                         _kln89->DrawLatitude(ap->getLatitude(), 2, 3, 2);
 180                         _kln89->DrawLongitude(ap->getLongitude(), 2, 3, 1);
 181                         _kln89->DrawDirDistField(ap->getLatitude() * SG_DEGREES_TO_RADIANS, ap->getLongitude() * SG_DEGREES_TO_RADIANS,
 182                                                  2, 0, 0, _to_flag, (_kln89->_mode == KLN89_MODE_CRSR && _uLinePos == 5 ? true : false));
 183                 } else if(_subPage == 2) {
 184                         // Try and calculate a realistic difference from UTC based on longitude
 185                         // Since 0 longitude is the middle of UTC, the boundaries will be at 7.5, 22.5, 37.5 etc.
 186                         int hrDiff = ((int)((fabs(ap->getLongitude())) + 7.5)) / 15;
 187                         _kln89->DrawText("UTC", 2, 0, 2);
 188                         if(hrDiff != 0) {
 189                                 _kln89->DrawText(ap->getLongitude() >= 0.0 ? "+" : "-", 2, 3, 2);
 190                                 char buf[3];
 191                                 snprintf(buf, 3, "%02i", hrDiff);
 192                                 _kln89->DrawText((string)buf, 2, 4, 2);
 193                                 _kln89->DrawText("(   DT)", 2, 6, 2);
 194                                 if(ap->getLongitude() >= 0.0) {
 195                                         hrDiff++;
 196                                 } else {
 197                                         hrDiff--;
 198                                 }
 199                                 _kln89->DrawText(ap->getLongitude() >= 0.0 ? "+" : "-", 2, 7, 2);
 200                                 snprintf(buf, 3, "%02i", hrDiff);
 201                                 _kln89->DrawText((string)buf, 2, 8, 2);
 202                         }
 203                         // I guess we can make a heuristic guess as to fuel availability from the runway sizes
 204                         // For now assume that airports with asphalt or concrete runways will have at least 100L,
 205                         // and that runways over 4000ft will have JET.
 206                         if(_aptRwys[0]->surface() <= 2) {
 207                                 if(_aptRwys[0]->lengthFt() >= 4000) {
 208                                         _kln89->DrawText("JET 100L", 2, 0, 1);
 209                                 } else {
 210                                         _kln89->DrawText("100L", 2, 0, 1);
 211                                 }
 212                         }
 213                         if(_iaps.empty()) {
 214                                 _kln89->DrawText("NO APR", 2, 0, 0);
 215                         } else {
 216                                 // TODO - output proper differentiation of ILS and NP APR and NP APR type eg GPS(R)
 217                                 _kln89->DrawText("NP APR", 2, 0, 0);
 218                         }
 219                 } else if(_subPage == 3) {
 220                         if(_nRwyPages > 1) {
 221                                 _kln89->DrawChar('+', 1, 3, 0);
 222                         }
 223                         unsigned int i = _curRwyPage * 2;
 224                         string s;
 225                         if(i < _aptRwys.size()) {
 226                                 // Rwy No.
 227                                 string s = _aptRwys[i]->ident();
 228                                 _kln89->DrawText(s, 2, 9, 3);
 229                                 _kln89->DrawText("/", 2, 12, 3);
 230                                 _kln89->DrawText(GetReverseRunwayNo(s), 2, 13, 3);
 231                                 // Length
 232                                 s = GPSitoa(int(float(_aptRwys[i]->lengthFt()) * (_kln89->_altUnits == GPS_ALT_UNITS_FT ? 1.0 : SG_FEET_TO_METER) + 0.5));
 233                                 _kln89->DrawText(s, 2, 5 - s.size(), 2);
 234                                 _kln89->DrawText((_kln89->_altUnits == GPS_ALT_UNITS_FT ? "ft" : "m"), 2, 5, 2);
 235                                 // Surface
 236                                 // TODO - why not store these strings as an array?
 237                                 switch(_aptRwys[i]->surface()) {
 238                                 case 1:
 239                                         // Asphalt - fall through
 240                                 case 2:
 241                                         // Concrete
 242                                         _kln89->DrawText("HRD", 2, 9, 2);
 243                                         break;
 244                                 case 3:
 245                                 case 8:
 246                                         // Turf / Turf helipad
 247                                         _kln89->DrawText("TRF", 2, 9, 2);
 248                                         break;
 249                                 case 4:
 250                                 case 9:
 251                                         // Dirt / Dirt helipad
 252                                         _kln89->DrawText("DRT", 2, 9, 2);
 253                                         break;
 254                                 case 5:
 255                                         // Gravel
 256                                         _kln89->DrawText("GRV", 2, 9, 2);
 257                                         break;
 258                                 case 6:
 259                                         // Asphalt helipad - fall through
 260                                 case 7:
 261                                         // Concrete helipad
 262                                         _kln89->DrawText("HRD", 2, 9, 2);
 263                                         break;
 264                                 case 12:
 265                                         // Lakebed
 266                                         _kln89->DrawText("CLY", 2, 9, 2);
 267                                 default:
 268                                         // erm? ...
 269                                         _kln89->DrawText("MAT", 2, 9, 2);
 270                                 }
 271                         }
 272                         i++;
 273                         if(i < _aptRwys.size()) {
 274                                 // Rwy No.
 275                                 string s = _aptRwys[i]->ident();
 276                                 _kln89->DrawText(s, 2, 9, 1);
 277                                 _kln89->DrawText("/", 2, 12, 1);
 278                                 _kln89->DrawText(GetReverseRunwayNo(s), 2, 13, 1);
 279                                 // Length
 280                                 s = GPSitoa(int(float(_aptRwys[i]->lengthFt()) * (_kln89->_altUnits == GPS_ALT_UNITS_FT ? 1.0 : SG_FEET_TO_METER) + 0.5));
 281                                 _kln89->DrawText(s, 2, 5 - s.size(), 0);
 282                                 _kln89->DrawText((_kln89->_altUnits == GPS_ALT_UNITS_FT ? "ft" : "m"), 2, 5, 0);
 283                                 // Surface
 284                                 // TODO - why not store these strings as an array?
 285                                 switch(_aptRwys[i]->surface()) {
 286                                 case 1:
 287                                         // Asphalt - fall through
 288                                 case 2:
 289                                         // Concrete
 290                                         _kln89->DrawText("HRD", 2, 9, 0);
 291                                         break;
 292                                 case 3:
 293                                 case 8:
 294                                         // Turf / Turf helipad
 295                                         _kln89->DrawText("TRF", 2, 9, 0);
 296                                         break;
 297                                 case 4:
 298                                 case 9:
 299                                         // Dirt / Dirt helipad
 300                                         _kln89->DrawText("DRT", 2, 9, 0);
 301                                         break;
 302                                 case 5:
 303                                         // Gravel
 304                                         _kln89->DrawText("GRV", 2, 9, 0);
 305                                         break;
 306                                 case 6:
 307                                         // Asphalt helipad - fall through
 308                                 case 7:
 309                                         // Concrete helipad
 310                                         _kln89->DrawText("HRD", 2, 9, 0);
 311                                         break;
 312                                 case 12:
 313                                         // Lakebed
 314                                         _kln89->DrawText("CLY", 2, 9, 0);
 315                                 default:
 316                                         // erm? ...
 317                                         _kln89->DrawText("MAT", 2, 9, 0);
 318                                 }
 319                         }
 320                 } else if(_subPage == 4) {
 321                         if(_nFreqPages > 1) {
 322                                 _kln89->DrawChar('+', 1, 3, 0);
 323                         }
 324                         unsigned int i = _curFreqPage * 3;
 325                         if(i < _aptFreqs.size()) {
 326                                 _kln89->DrawText(_aptFreqs[i].service, 2, 0, 2);
 327                                 _kln89->DrawFreq(_aptFreqs[i].freq, 2, 7, 2);
 328                         }
 329                         i++;
 330                         if(i < _aptFreqs.size()) {
 331                                 _kln89->DrawText(_aptFreqs[i].service, 2, 0, 1);
 332                                 _kln89->DrawFreq(_aptFreqs[i].freq, 2, 7, 1);
 333                         }
 334                         i++;
 335                         if(i < _aptFreqs.size()) {
 336                                 _kln89->DrawText(_aptFreqs[i].service, 2, 0, 0);
 337                                 _kln89->DrawFreq(_aptFreqs[i].freq, 2, 7, 0);
 338                         }
 339                 } else if(_subPage == 5) {
 340                         // TODO - user ought to be allowed to leave persistent remarks
 341                         _kln89->DrawText("[Remarks]", 2, 2, 2);
 342                 } else if(_subPage == 6) {
 343                         // We don't have SID/STAR database yet
 344                         // TODO
 345                         _kln89->DrawText("No SID/STAR", 2, 3, 2);
 346                         _kln89->DrawText("In Data Base", 2, 2, 1);
 347                         _kln89->DrawText("For This Airport", 2, 0, 0);
 348                 } else if(_subPage == 7) {
 349                         if(_iaps.empty()) {
 350                                 _kln89->DrawText("IAP", 2, 11, 3);
 351                                 _kln89->DrawText("No Approach", 2, 3, 2);
 352                                 _kln89->DrawText("In Data Base", 2, 2, 1);
 353                                 _kln89->DrawText("For This Airport", 2, 0, 0);
 354                         } else {
 355                                 if(_iafDialog) {
 356                                         _kln89->DrawText(_iaps[_curIap]->_ident, 2, 1, 3);
 357                                         _kln89->DrawText(_iaps[_curIap]->_rwyStr, 2, 7, 3);
 358                                         _kln89->DrawText(_iaps[_curIap]->_aptIdent, 2, 12, 3);
 359                                         _kln89->DrawText("IAF", 2, 2, 2);
 360                                         unsigned int line = 0;
 361                                         for(unsigned int i=_iafStart; i<_approachRoutes.size(); ++i) {
 362                                                 if(line == 2) {
 363                                                         i = _approachRoutes.size() - 1;
 364                                                 }
 365                                                 // Assume that the IAF number is always single digit!
 366                                                 _kln89->DrawText(GPSitoa(i+1), 2, 6, 2-line);
 367                                                 if(!(_kln89->_mode == KLN89_MODE_CRSR && _kln89->_blink && _uLinePos == (line + 1))) {
 368                                                         _kln89->DrawText(_approachRoutes[i]->waypoints[0]->id, 2, 8, 2-line);
 369                                                 }
 370                                                 if(_kln89->_mode == KLN89_MODE_CRSR && _uLinePos == (line + 1) && !(_kln89->_blink )) {
 371                                                         _kln89->Underline(2, 8, 2-line, 5);
 372                                                 }
 373                                                 ++line;
 374                                         }
 375                                         if(_uLinePos > 0 && !(_kln89->_blink)) {
 376                                                 _kln89->DrawEnt();
 377                                         }
 378                                 } else if(_addDialog) {
 379                                         _kln89->DrawText(_iaps[_curIap]->_ident, 2, 1, 3);
 380                                         _kln89->DrawText(_iaps[_curIap]->_rwyStr, 2, 7, 3);
 381                                         _kln89->DrawText(_iaps[_curIap]->_aptIdent, 2, 12, 3);
 382                                         string s = GPSitoa(_fStart + 1);
 383                                         _kln89->DrawText(s, 2, 2-s.size(), 2);
 384                                         s = GPSitoa(_kln89->_approachFP->waypoints.size());
 385                                         _kln89->DrawText(s, 2, 2-s.size(), 1);
 386                                         if(!(_uLinePos == _fStart+1 && _kln89->_blink)) {
 387                                                 _kln89->DrawText(_kln89->_approachFP->waypoints[_fStart]->id, 2, 4, 2);
 388                                                 if(_uLinePos == _fStart+1) _kln89->Underline(2, 4, 2, 6);
 389                                         }
 390                                         if(!(_uLinePos == _maxULinePos-1 && _kln89->_blink)) {
 391                                                 _kln89->DrawText(_kln89->_approachFP->waypoints[_kln89->_approachFP->waypoints.size()-1]->id, 2, 4, 1);
 392                                                 if(_uLinePos == _maxULinePos-1) _kln89->Underline(2, 4, 1, 6);
 393                                         }
 394                                         if(!(_uLinePos > _kln89->_approachFP->waypoints.size() && _kln89->_blink)) {
 395                                                 _kln89->DrawText("ADD TO FPL 0?", 2, 2, 0);
 396                                                 if(_uLinePos > _kln89->_approachFP->waypoints.size()) {
 397                                                         _kln89->Underline(2, 2, 0, 13);
 398                                                         _kln89->DrawEnt();
 399                                                 }
 400                                         }
 401                                 } else if(_replaceDialog) {
 402                                         _kln89->DrawText(_iaps[_curIap]->_ident, 2, 1, 3);
 403                                         _kln89->DrawText(_iaps[_curIap]->_rwyStr, 2, 7, 3);
 404                                         _kln89->DrawText(_iaps[_curIap]->_aptIdent, 2, 12, 3);
 405                                         _kln89->DrawText("Replace Existing", 2, 0, 2);
 406                                         _kln89->DrawText("Approach", 2, 4, 1);
 407                                         if(_uLinePos > 0 && !(_kln89->_blink)) {
 408                                                 _kln89->DrawText("APPROVE?", 2, 4, 0);
 409                                                 _kln89->Underline(2, 4, 0, 8);
 410                                                 _kln89->DrawEnt();
 411                                         }
 412                                 } else {
 413                                         _kln89->DrawText("IAP", 2, 11, 3);
 414                                         bool selApp = false;
 415                                         if(_kln89->_mode == KLN89_MODE_CRSR && _uLinePos > 4) {
 416                                                 selApp = true;
 417                                                 if(!_kln89->_blink) _kln89->DrawEnt();
 418                                         }
 419                                         // _maxULine pos should be 4 + iaps.size() at this point.
 420                                         // Draw a maximum of 3 IAPs.
 421                                         // If there are more than 3 IAPs for this airport, then we need to offset the start
 422                                         // of the list if _uLinePos is pointing at the 4th or later IAP.
 423                                         unsigned int offset = 0;
 424                                         unsigned int index;
 425                                         if(_uLinePos > 7) {
 426                                                 offset = _uLinePos - 7;
 427                                         }
 428                                         for(unsigned int i=0; i<3; ++i) {
 429                                                 index = offset + i;
 430                                                 if(index < _iaps.size()) {
 431                                                         string s = GPSitoa(index+1);
 432                                                         _kln89->DrawText(s, 2, 2 - s.size(), 2-i);
 433                                                         if(!(selApp && _uLinePos == index+5 && _kln89->_blink)) {
 434                                                                 _kln89->DrawText(_iaps[index]->_ident, 2, 3, 2-i);
 435                                                                 _kln89->DrawText(_iaps[index]->_rwyStr, 2, 9, 2-i);
 436                                                         }
 437                                                         if(selApp && _uLinePos == index+5 && !_kln89->_blink) {
 438                                                                 _kln89->Underline(2, 3, 2-i, 9);
 439                                                         }
 440                                                 } else {
 441                                                         break;
 442                                                 }
 443                                         }
 444                                 }
 445                         }
 446                 }
 447         } else {
 448                 if(_kln89->_mode != KLN89_MODE_CRSR) _kln89->DrawText(_apt_id, 2, 1, 3);
 449                 if(_subPage == 0) {
 450                         /*
 451                         _kln89->DrawText("----.-", 2, 9, 3);
 452                         _kln89->DrawText("--------------", 2, 0, 2);
 453                         _kln89->DrawText("- -- --.--'", 2, 3, 1);
 454                         _kln89->DrawText("---- --.--'", 2, 3, 0);
 455                         _kln89->DrawSpecialChar(0, 2, 7, 1);
 456                         _kln89->DrawSpecialChar(0, 2, 7, 0);
 457                         */
 458                 }
 459         }
 460
 461         if(_kln89->_mode == KLN89_MODE_CRSR) {
 462                 if(!(_subPage == 7 && (_iafDialog || _addDialog || _replaceDialog))) {
 463                         if(_uLinePos > 0 && _uLinePos < 5) {
 464                                 // TODO - blink as well
 465                                 _kln89->Underline(2, _uLinePos, 3, 1);
 466                         }
 467                         for(unsigned int i = 0; i < _apt_id.size(); ++i) {
 468                                 if(_uLinePos != (i + 1)) {
 469                                         _kln89->DrawChar(_apt_id[i], 2, i + 1, 3);
 470                                 } else {
 471                                         if(!_kln89->_blink) _kln89->DrawChar(_apt_id[i], 2, i + 1, 3);
 472                                 }
 473                         }
 474                 }
 475         }
 476
 477         _id = _apt_id;
 478
 479         KLN89Page::Update(dt);
 480 }
 481
 482 void KLN89AptPage::SetId(const string& s) {
 483         if(s != _apt_id || s != _last_apt_id) {
 484                 UpdateAirport(s);       // If we don't do this here we break things if s is the same as the current ID since the update wouldn't get called then.
 485                 /*
 486                         DCL: Hmmm - I wrote the comment above, but I don't quite understand it!
 487                         I'm not quite sure why I don't simply set _apt_id here (and NOT _last_apt_id)
 488                         and let the logic in Update(...) handle the airport details cache update.
 489                 */
 490         }
 491         _last_apt_id = _apt_id;
 492         _save_apt_id = _apt_id;
 493         _apt_id = s;
 494 }
 495
 496 // Update the cached airport details
 497 void KLN89AptPage::UpdateAirport(const string& id) {
 498         // Frequencies
 499         _aptFreqs.clear();
 500         ATCData ad;
 501         AptFreq aq;
 502         //cout << "UpdateAirport called, id = " << id << '\n';
 503         // TODO - the logic below only returns one service per type per airport - they can be on more than one freq though.
 504         if(current_commlist->FindByCode(id, ad, ATIS)) {
 505                 //cout << "Found ATIS\n";
 506                 aq.service = "ATIS*";
 507                 aq.freq = ad.freq;
 508                 _aptFreqs.push_back(aq);
 509         }
 510         if(current_commlist->FindByCode(id, ad, GROUND)) {
 511                 aq.service = "GRND*";
 512                 aq.freq = ad.freq;
 513                 _aptFreqs.push_back(aq);
 514         }
 515         if(current_commlist->FindByCode(id, ad, TOWER)) {
 516                 aq.service = "TWR *";
 517                 aq.freq = ad.freq;
 518                 _aptFreqs.push_back(aq);
 519         }
 520         if(current_commlist->FindByCode(id, ad, APPROACH)) {
 521                 aq.service = "APR";
 522                 aq.freq = ad.freq;
 523                 _aptFreqs.push_back(aq);
 524         }
 525         _nFreqPages = (unsigned int)ceil((float(_aptFreqs.size())) / 3.0f);
 526
 527         // Runways
 528         _aptRwys.clear();
 529   const FGAirport* apt = fgFindAirportID(id);
 530   assert(apt);
 531
 532   // build local array, longest runway first
 533   for (unsigned int r=0; r<apt->numRunways(); ++r) {
 534     FGRunway* rwy(apt->getRunwayByIndex(r));
 535     if ((r > 0) && (rwy->lengthFt() > _aptRwys.front()->lengthFt())) {
 536       _aptRwys.insert(_aptRwys.begin(), rwy);
 537     } else {
 538       _aptRwys.push_back(rwy);
 539     }
 540   }
 541
 542         _nRwyPages = (_aptRwys.size() + 1) / 2; // 2 runways per page.
 543         if(_nFreqPages < 1) _nFreqPages = 1;
 544         if(_nRwyPages < 1) _nRwyPages = 1;
 545
 546         // Instrument approaches
 547         // Only non-precision for now - TODO - handle precision approaches if necessary
 548         _iaps.clear();
 549         iap_map_iterator itr = _kln89->_np_iap.find(id);
 550         if(itr != _kln89->_np_iap.end()) {
 551                 _iaps = itr->second;
 552         }
 553         if(_subPage == 7) {
 554                 if(_iafDialog || _addDialog || _replaceDialog) {
 555                         // Eek - major logic error if an airport details cache update occurs
 556                         // with one of these dialogs active.
 557                         // TODO - output a warning.
 558                         //cout << "HELP!!!!!!!!!!\n";
 559                 } else {
 560                         _maxULinePos = 4 + _iaps.size();        // We shouldn't need to check the crsr for out-of-bounds here since we only update the airport details when the airport code is changed - ie. _uLinePos <= 4!
 561                 }
 562         }
 563 }
 564
 565 void KLN89AptPage::CrsrPressed() {
 566         if(_kln89->_mode == KLN89_MODE_DISP) {
 567                 if(_subPage == 7) {
 568                         // Pressing crsr jumps back to vanilla IAP page.
 569                         _iafDialog = false;
 570                         _addDialog = false;
 571                         _replaceDialog = false;
 572                 }
 573                 return;
 574         }
 575         if(_kln89->_obsMode) {
 576                 _uLinePos = 0;
 577         } else {
 578                 _uLinePos = 1;
 579         }
 580         if(_subPage == 0) {
 581                 _maxULinePos = 32;
 582         } else if(_subPage == 7) {
 583                 // Don't *think* we need some of this since some of it we can only get to by pressing ENT, not CRSR.
 584                 if(_iafDialog) {
 585                         _maxULinePos = _approachRoutes.size();
 586                         _uLinePos = 1;
 587                 } else if(_addDialog) {
 588                         _maxULinePos = 1;
 589                         _uLinePos = 1;
 590                 } else if(_replaceDialog) {
 591                         _maxULinePos = 1;
 592                         _uLinePos = 1;
 593                 } else {
 594                         _maxULinePos = 4 + _iaps.size();
 595                         if(_iaps.empty()) {
 596                                 _uLinePos = 1;
 597                         } else {
 598                                 _uLinePos = 5;
 599                         }
 600                 }
 601         } else {
 602                 _maxULinePos = 5;
 603         }
 604 }
 605
 606 void KLN89AptPage::ClrPressed() {
 607         if(_subPage == 1 && _uLinePos == 5) {
 608                 _to_flag = !_to_flag;
 609         } else if(_subPage == 7) {
 610                 // Clear backs out IAP selection one step at a time
 611                 if(_iafDialog) {
 612                         _iafDialog = false;
 613                         _maxULinePos = 4 + _iaps.size();
 614                         if(_iaps.empty()) {
 615                                 _uLinePos = 1;
 616                         } else {
 617                                 _uLinePos = 5;
 618                         }
 619                 } else if(_addDialog) {
 620                         _addDialog = false;
 621                         if(_approachRoutes.size() > 1) {
 622                                 _iafDialog = true;
 623                                 _maxULinePos = 1;
 624                                 // Don't reset _curIaf since it is remembed.
 625                                 _uLinePos = 1 + _curIaf;        // TODO - make this robust to more than 3 IAF
 626                         } else {
 627                                 _maxULinePos = 4 + _iaps.size();
 628                                 if(_iaps.empty()) {
 629                                         _uLinePos = 1;
 630                                 } else {
 631                                         _uLinePos = 5;
 632                                 }
 633                         }
 634                 } else if(_replaceDialog) {
 635                         _replaceDialog = false;
 636                         _addDialog = true;
 637                         _maxULinePos = 1;
 638                         _uLinePos = 1;
 639                 }
 640         }
 641 }
 642
 643 void KLN89AptPage::EntPressed() {
 644         if(_entInvert) {
 645                 _entInvert = false;
 646                 if(_kln89->_dtoReview) {
 647                         _kln89->DtoInitiate(_apt_id);
 648                 } else {
 649                         _last_apt_id = _apt_id;
 650                         _apt_id = _save_apt_id;
 651                 }
 652         } else if(_subPage == 7 && _kln89->_mode == KLN89_MODE_CRSR && _uLinePos > 0) {
 653                 // We are selecting an approach
 654                 if(_iafDialog) {
 655                         if(_uLinePos > 0) {
 656                                 // Record the IAF that was picked
 657                                 if(_uLinePos == 3) {
 658                                         _curIaf = _approachRoutes.size() - 1;
 659                                 } else {
 660                                         _curIaf = _uLinePos - 1 + _iafStart;
 661                                 }
 662                                 //cout << "_curIaf = " << _curIaf << '\n';
 663                                 // TODO - delete the waypoints inside _approachFP before clearing them!!!!!!!
 664                                 _kln89->_approachFP->waypoints.clear();
 665                                 GPSWaypoint* wp = new GPSWaypoint;
 666                                 *wp = *(_approachRoutes[_curIaf]->waypoints[0]);        // Need to make copies here since we're going to alter ID and type sometimes
 667                                 string iafid = wp->id;
 668                                 _kln89->_approachFP->waypoints.push_back(wp);
 669                                 for(unsigned int i=0; i<_IAP.size(); ++i) {
 670                                         if(_IAP[i]->id != iafid) {      // Don't duplicate waypoints that are part of the initial fix list and the approach procedure list.
 671                         // FIXME - allow the same waypoint to be both the IAF and the FAF in some
 672                         // approaches that have a procedure turn eg. KDLL
 673                         // Also allow MAF to be the same as IAF!
 674                                                 wp = new GPSWaypoint;
 675                                                 *wp = *_IAP[i];
 676                                                 //cout << "Adding waypoint " << wp->id << ", type is " << wp->appType << '\n';
 677                                                 //if(wp->appType == GPS_FAF) wp->id += 'f';
 678                                                 //if(wp->appType == GPS_MAP) wp->id += 'm';
 679                                                 //cout << "New id = " << wp->id << '\n';
 680                                                 _kln89->_approachFP->waypoints.push_back(wp);
 681                                         }
 682                                 }
 683                                 _iafDialog = false;
 684                                 _addDialog = true;
 685                                 _maxULinePos = _kln89->_approachFP->waypoints.size() + 1;
 686                                 _uLinePos = _maxULinePos;
 687                         }
 688                 } else if(_addDialog) {
 689                         if(_uLinePos == _maxULinePos) {
 690                                 _addDialog = false;
 691                                 if(_kln89->ApproachLoaded()) {
 692                                         _replaceDialog = true;
 693                                         _uLinePos = 1;
 694                                         _maxULinePos = 1;
 695                                 } else {
 696                     // Now load the approach into the active flightplan.
 697                     // As far as I can tell, the rules are this:
 698                     // If the airport of the approach is in the flightplan, insert it prior to this.  (Not sure what happens if airport has already been passed).
 699                     // If the airport is not in the flightplan, append the approach to the flightplan, even if it is closer than the current active leg,
 700                     // in which case reorientate to flightplan might put us on the approach, but unable to activate it.
 701                     // However, it appears from the sim as if this can indeed happen if the user is not carefull.
 702                     bool added = false;
 703                     for(unsigned int i=0; i<_kln89->_activeFP->waypoints.size(); ++i) {
 704                         if(_kln89->_activeFP->waypoints[i]->id == _apt_id) {
 705                             _kln89->_activeFP->waypoints.insert(_kln89->_activeFP->waypoints.begin()+i, _kln89->_approachFP->waypoints.begin(), _kln89->_approachFP->waypoints.end());
 706                             added = true;
 707                             break;
 708                         }
 709                     }
 710                     if(!added) {
 711                         _kln89->_activeFP->waypoints.insert(_kln89->_activeFP->waypoints.end(), _kln89->_approachFP->waypoints.begin(), _kln89->_approachFP->waypoints.end());
 712                     }
 713                                         _kln89->_approachID = _apt_id;
 714                                         _kln89->_approachAbbrev = _iaps[_curIap]->_ident;
 715                                         _kln89->_approachRwyStr = _iaps[_curIap]->_rwyStr;
 716                                         _kln89->_approachLoaded = true;
 717                                         //_kln89->_messageStack.push_back("*Press ALT To Set Baro");
 718                                         // Actually - this message is only sent when we go into appraoch-arm mode.
 719                                         // TODO - check the flightplan for consistency
 720                                         _kln89->OrientateToActiveFlightPlan();
 721                                         _kln89->_mode = KLN89_MODE_DISP;
 722                                         _kln89->_curPage = 7;
 723                                         _kln89->_activePage = _kln89->_pages[7];        // Do we need to clean up here at all before jumping?
 724                                 }
 725                         }
 726                 } else if(_replaceDialog) {
 727                         // TODO - load the approach!
 728                 } else if(_uLinePos > 4) {
 729                         _approachRoutes.clear();
 730                         _IAP.clear();
 731                         _curIaf = 0;
 732                         _approachRoutes = ((FGNPIAP*)(_iaps[_uLinePos-5]))->_approachRoutes;
 733                         _IAP = ((FGNPIAP*)(_iaps[_uLinePos-5]))->_IAP;
 734                         _curIap = _uLinePos - 5;        // TODO - handle the start of list ! no. 1, and the end of list not sequential!
 735                         _uLinePos = 1;
 736                         if(_approachRoutes.size() > 1) {
 737                                 // More than 1 IAF - display the selection dialog
 738                                 _iafDialog = true;
 739                                 _maxULinePos = _approachRoutes.size();
 740                         } else {
 741                                 // There is only 1 IAF, so load the waypoints into the approach flightplan here.
 742                                 // TODO - there is nasty code duplication loading the approach FP between the case here where we have only one
 743                                 // IAF and the case where we must choose the IAF from a list.  Try to tidy this after it is all working properly.
 744                                 _kln89->_approachFP->waypoints.clear();
 745                                 GPSWaypoint* wp = new GPSWaypoint;
 746                                 *wp = *(_approachRoutes[0]->waypoints[0]);      // Need to make copies here since we're going to alter ID and type sometimes
 747                                 string iafid = wp->id;
 748                                 _kln89->_approachFP->waypoints.push_back(wp);
 749                                 for(unsigned int i=0; i<_IAP.size(); ++i) {
 750                                         if(_IAP[i]->id != iafid) {      // Don't duplicate waypoints that are part of the initial fix list and the approach procedure list.
 751                                                 // FIXME - allow the same waypoint to be both the IAF and the FAF in some
 752                                                 // approaches that have a procedure turn eg. KDLL
 753                                                 // Also allow MAF to be the same as IAF!
 754                                                 wp = new GPSWaypoint;
 755                                                 *wp = *_IAP[i];
 756                                                 _kln89->_approachFP->waypoints.push_back(wp);
 757                                         }
 758                                 }
 759                                 _addDialog = true;
 760                                 _maxULinePos = 1;
 761                         }
 762                 }
 763         }
 764 }
 765
 766 void KLN89AptPage::Knob1Left1() {
 767         if(_kln89->_mode == KLN89_MODE_CRSR && _subPage == 7 && _addDialog) {
 768                 if(_uLinePos == _maxULinePos) {
 769                         _uLinePos--;
 770                         if(_kln89->_approachFP->waypoints.size() > 1) _fStart = _kln89->_approachFP->waypoints.size() - 2;
 771                 } else if(_uLinePos == _maxULinePos - 1) {
 772                         _uLinePos--;
 773                 } else if(_uLinePos > 0) {
 774                         if(_fStart == 0) {
 775                                 _uLinePos--;
 776                         } else {
 777                                 _uLinePos--;
 778                                 _fStart--;
 779                         }
 780                 }
 781         } else {
 782                 KLN89Page::Knob1Left1();
 783         }
 784 }
 785
 786 void KLN89AptPage::Knob1Right1() {
 787         if(_kln89->_mode == KLN89_MODE_CRSR && _subPage == 7 && _addDialog) {
 788                 if(_uLinePos == _maxULinePos) {
 789                         // no-op
 790                 } else if(_uLinePos == _maxULinePos - 1) {
 791                         _uLinePos++;
 792                         _fStart = 0;
 793                 } else if(_uLinePos > 0) {
 794                         if(_fStart >= _kln89->_approachFP->waypoints.size() - 2) {
 795                                 _uLinePos++;
 796                         } else {
 797                                 _uLinePos++;
 798                                 _fStart++;
 799                         }
 800                 } else if(_uLinePos == 0) {
 801                         _uLinePos++;
 802                         _fStart = 0;
 803                 }
 804         } else {
 805                 KLN89Page::Knob1Right1();
 806         }
 807 }
 808
 809 void KLN89AptPage::Knob2Left1() {
 810         if(_kln89->_mode != KLN89_MODE_CRSR || _uLinePos == 0) {
 811                 if(_uLinePos == 0 && _kln89->_mode == KLN89_MODE_CRSR && _kln89->_obsMode) {
 812                         KLN89Page::Knob2Left1();
 813                 } else if(_subPage == 5) {
 814                         _subPage = 4;
 815                         _curFreqPage = _nFreqPages - 1;
 816                 } else if(_subPage == 4) {
 817                         // Freqency pages
 818                         if(_curFreqPage == 0) {
 819                                 _subPage = 3;
 820                                 _curRwyPage = _nRwyPages - 1;
 821                         } else {
 822                                 _curFreqPage--;
 823                         }
 824                 } else if(_subPage == 3) {
 825                         if(_curRwyPage == 0) {
 826                                 KLN89Page::Knob2Left1();
 827                         } else {
 828                                 _curRwyPage--;
 829                         }
 830                 } else if(_subPage == 0) {
 831                         _subPage = 7;
 832                         // We have to set _uLinePos here even though the cursor isn't pressed, to
 833                         // ensure that the list displays properly.
 834                         if(_iaps.empty()) {
 835                                 _uLinePos = 1;
 836                         } else {
 837                                 _uLinePos = 5;
 838                         }
 839                 } else {
 840                         KLN89Page::Knob2Left1();
 841                 }
 842         } else {
 843                 if(_uLinePos < 5 && !(_subPage == 7 && (_iafDialog || _addDialog || _replaceDialog))) {
 844                         // Same logic for all pages - set the ID
 845                         _apt_id = _apt_id.substr(0, _uLinePos);
 846                         // ASSERT(_uLinePos > 0);
 847                         if(_uLinePos == (_apt_id.size() + 1)) {
 848                                 _apt_id += '9';
 849                         } else {
 850                                 _apt_id[_uLinePos - 1] = _kln89->DecChar(_apt_id[_uLinePos - 1], (_uLinePos == 1 ? false : true));
 851                         }
 852                 } else {
 853                         if(_subPage == 0) {
 854                                 // TODO - set by name
 855                         } else {
 856                                 // NO-OP - to/fr is cycled by clr button
 857                         }
 858                 }
 859         }
 860 }
 861
 862 void KLN89AptPage::Knob2Right1() {
 863         if(_kln89->_mode != KLN89_MODE_CRSR || _uLinePos == 0) {
 864                 if(_uLinePos == 0 && _kln89->_mode == KLN89_MODE_CRSR && _kln89->_obsMode) {
 865                         KLN89Page::Knob2Right1();
 866                 } else if(_subPage == 2) {
 867                         _subPage = 3;
 868                         _curRwyPage = 0;
 869                 } else if(_subPage == 3) {
 870                         if(_curRwyPage == _nRwyPages - 1) {
 871                                 _subPage = 4;
 872                                 _curFreqPage = 0;
 873                         } else {
 874                                 _curRwyPage++;
 875                         }
 876                 } else if(_subPage == 4) {
 877                         if(_curFreqPage == _nFreqPages - 1) {
 878                                 _subPage = 5;
 879                         } else {
 880                                 _curFreqPage++;
 881                         }
 882                 } else if(_subPage == 6) {
 883                         _subPage = 7;
 884                         // We have to set _uLinePos here even though the cursor isn't pressed, to
 885                         // ensure that the list displays properly.
 886                         if(_iaps.empty()) {
 887                                 _uLinePos = 1;
 888                         } else {
 889                                 _uLinePos = 5;
 890                         }
 891                 } else {
 892                         KLN89Page::Knob2Right1();
 893                 }
 894         } else {
 895                 if(_uLinePos < 5 && !(_subPage == 7 && (_iafDialog || _addDialog || _replaceDialog))) {
 896                         // Same logic for all pages - set the ID
 897                         _apt_id = _apt_id.substr(0, _uLinePos);
 898                         // ASSERT(_uLinePos > 0);
 899                         if(_uLinePos == (_apt_id.size() + 1)) {
 900                                 _apt_id += 'A';
 901                         } else {
 902                                 _apt_id[_uLinePos - 1] = _kln89->IncChar(_apt_id[_uLinePos - 1], (_uLinePos == 1 ? false : true));
 903                         }
 904                 } else {
 905                         if(_subPage == 0) {
 906                                 // TODO - set by name
 907                         } else {
 908                                 // NO-OP - to/fr is cycled by clr button
 909                         }
 910                 }
 911         }
 912 }