src/Traffic/TrafficMgr.cxx

   1 /******************************************************************************
   2  * TrafficMGr.cxx
   3  * Written by Durk Talsma, started May 5, 2004.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  *
  20  **************************************************************************/
  21
  22 /*
  23  * Traffic manager parses airlines timetable-like data and uses this to
  24  * determine the approximate position of each AI aircraft in its database.
  25  * When an AI aircraft is close to the user's position, a more detailed
  26  * AIModels based simulation is set up.
  27  *
  28  * I'm currently assuming the following simplifications:
  29  * 1) The earth is a perfect sphere
  30  * 2) Each aircraft flies a perfect great circle route.
  31  * 3) Each aircraft flies at a constant speed (with infinite accelerations and
  32  *    decelerations)
  33  * 4) Each aircraft leaves at exactly the departure time.
  34  * 5) Each aircraft arrives at exactly the specified arrival time.
  35  *
  36  *
  37  *****************************************************************************/
  38
  39 #ifdef HAVE_CONFIG_H
  40 #  include "config.h"
  41 #endif
  42
  43 #include <stdlib.h>
  44 #include <time.h>
  45 #include <cstring>
  46 #include <iostream>
  47 #include <fstream>
  48
  49
  50 #include <string>
  51 #include <vector>
  52 #include <algorithm>
  53 #include <boost/foreach.hpp>
  54
  55 #include <simgear/compiler.h>
  56 #include <simgear/misc/sg_path.hxx>
  57 #include <simgear/misc/sg_dir.hxx>
  58 #include <simgear/props/props.hxx>
  59 #include <simgear/route/waypoint.hxx>
  60 #include <simgear/structure/subsystem_mgr.hxx>
  61 #include <simgear/xml/easyxml.hxx>
  62
  63 #include <AIModel/AIAircraft.hxx>
  64 #include <AIModel/AIFlightPlan.hxx>
  65 #include <AIModel/AIBase.hxx>
  66 #include <Airports/simple.hxx>
  67 #include <Main/fg_init.hxx>
  68
  69
  70
  71 #include "TrafficMgr.hxx"
  72
  73 using std::sort;
  74 using std::strcmp;
  75
  76 /******************************************************************************
  77  * TrafficManager
  78  *****************************************************************************/
  79 FGTrafficManager::FGTrafficManager() :
  80   inited(false),
  81   doingInit(false),
  82   enabled("/sim/traffic-manager/enabled"),
  83   aiEnabled("/sim/ai/enabled"),
  84   realWxEnabled("/environment/realwx/enabled"),
  85   metarValid("/environment/metar/valid")
  86 {
  87     //score = 0;
  88     //runCount = 0;
  89     acCounter = 0;
  90 }
  91
  92 FGTrafficManager::~FGTrafficManager()
  93 {
  94     // Save the heuristics data
  95     bool saveData = false;
  96     ofstream cachefile;
  97     if (fgGetBool("/sim/traffic-manager/heuristics")) {
  98         SGPath cacheData(fgGetString("/sim/fg-home"));
  99         cacheData.append("ai");
 100         string airport = fgGetString("/sim/presets/airport-id");
 101
 102         if ((airport) != "") {
 103             char buffer[128];
 104             ::snprintf(buffer, 128, "%c/%c/%c/",
 105                        airport[0], airport[1], airport[2]);
 106             cacheData.append(buffer);
 107             if (!cacheData.exists()) {
 108                 cacheData.create_dir(0777);
 109             }
 110             cacheData.append(airport + "-cache.txt");
 111             //cerr << "Saving AI traffic heuristics" << endl;
 112             saveData = true;
 113             cachefile.open(cacheData.str().c_str());
 114             cachefile << "[TrafficManagerCachedata:ref:2011:09:04]" << endl;
 115         }
 116     }
 117     for (ScheduleVectorIterator sched = scheduledAircraft.begin();
 118          sched != scheduledAircraft.end(); sched++) {
 119         if (saveData) {
 120             cachefile << (*sched)->getRegistration() << " "
 121                 << (*sched)->getRunCount() << " "
 122                 << (*sched)->getHits() << " "
 123                 << (*sched)->getLastUsed() << endl;
 124         }
 125         delete(*sched);
 126     }
 127     if (saveData) {
 128         cachefile.close();
 129     }
 130     scheduledAircraft.clear();
 131     flights.clear();
 132 }
 133
 134
 135 void FGTrafficManager::init()
 136 {
 137     if (!enabled || !aiEnabled) {
 138       return;
 139     }
 140
 141     assert(!doingInit);
 142     doingInit = true;
 143     if (string(fgGetString("/sim/traffic-manager/datafile")) == string("")) {
 144         simgear::Dir trafficDir(SGPath(globals->get_fg_root(), "AI/Traffic"));
 145         simgear::PathList d = trafficDir.children(simgear::Dir::TYPE_DIR | simgear::Dir::NO_DOT_OR_DOTDOT);
 146
 147         BOOST_FOREACH(SGPath p, d) {
 148           simgear::Dir d2(p);
 149           simgear::PathList trafficFiles = d2.children(simgear::Dir::TYPE_FILE, ".xml");
 150           schedulesToRead.insert(schedulesToRead.end(), trafficFiles.begin(), trafficFiles.end());
 151         }
 152     } else {
 153         fgSetBool("/sim/traffic-manager/heuristics", false);
 154         SGPath path = string(fgGetString("/sim/traffic-manager/datafile"));
 155         string ext = path.extension();
 156         if (path.extension() == "xml") {
 157             if (path.exists()) {
 158                 readXML(path.str(), *this);
 159             }
 160         } else if (path.extension() == "conf") {
 161             if (path.exists()) {
 162                 readTimeTableFromFile(path);
 163             }
 164         } else {
 165              SG_LOG(SG_AI, SG_ALERT,
 166                                "Unknown data format " << path.str()
 167                                 << " for traffic");
 168         }
 169         //exit(1);
 170     }
 171 }
 172
 173 void FGTrafficManager::initStep()
 174 {
 175     assert(doingInit);
 176     if (schedulesToRead.empty()) {
 177         finishInit();
 178         return;
 179     }
 180
 181     SGPath path = schedulesToRead.front();
 182     schedulesToRead.erase(schedulesToRead.begin());
 183     SG_LOG(SG_AI, SG_DEBUG, path << " for traffic");
 184     readXML(path.str(), *this);
 185 }
 186
 187 void FGTrafficManager::finishInit()
 188 {
 189     assert(doingInit);
 190     SG_LOG(SG_AI, SG_INFO, "finishing AI-Traffic init");
 191     loadHeuristics();
 192
 193     // Do sorting and scoring separately, to take advantage of the "homeport| variable
 194     for (currAircraft = scheduledAircraft.begin();
 195          currAircraft != scheduledAircraft.end(); currAircraft++) {
 196         (*currAircraft)->setScore();
 197     }
 198
 199     sort(scheduledAircraft.begin(), scheduledAircraft.end(),
 200          compareSchedules);
 201     currAircraft = scheduledAircraft.begin();
 202     currAircraftClosest = scheduledAircraft.begin();
 203
 204     doingInit = false;
 205     inited = true;
 206 }
 207
 208 void FGTrafficManager::loadHeuristics()
 209 {
 210     if (!fgGetBool("/sim/traffic-manager/heuristics")) {
 211         return;
 212     }
 213
 214     HeuristicMap heurMap;
 215     //cerr << "Processing Heuristics" << endl;
 216     // Load the heuristics data
 217     SGPath cacheData(fgGetString("/sim/fg-home"));
 218     cacheData.append("ai");
 219     string airport = fgGetString("/sim/presets/airport-id");
 220     if ((airport) != "") {
 221       char buffer[128];
 222       ::snprintf(buffer, 128, "%c/%c/%c/",
 223                  airport[0], airport[1], airport[2]);
 224       cacheData.append(buffer);
 225       cacheData.append(airport + "-cache.txt");
 226       string revisionStr;
 227       if (cacheData.exists()) {
 228         ifstream data(cacheData.c_str());
 229         data >> revisionStr;
 230         if (revisionStr != "[TrafficManagerCachedata:ref:2011:09:04]") {
 231           SG_LOG(SG_GENERAL, SG_ALERT,"Traffic Manager Warning: discarding outdated cachefile " <<
 232                  cacheData.c_str() << " for Airport " << airport);
 233         } else {
 234           while (1) {
 235             Heuristic h; // = new Heuristic;
 236             data >> h.registration >> h.runCount >> h.hits >> h.lastRun;
 237             if (data.eof())
 238               break;
 239             HeuristicMapIterator itr = heurMap.find(h.registration);
 240             if (itr != heurMap.end()) {
 241               SG_LOG(SG_GENERAL, SG_WARN,"Traffic Manager Warning: found duplicate tailnumber " <<
 242                      h.registration << " for AI aircraft");
 243             } else {
 244               heurMap[h.registration] = h;
 245             }
 246           }
 247         }
 248       }
 249     }
 250
 251   for(currAircraft = scheduledAircraft.begin(); currAircraft != scheduledAircraft.end(); ++currAircraft) {
 252         string registration = (*currAircraft)->getRegistration();
 253         HeuristicMapIterator itr = heurMap.find(registration);
 254         if (itr != heurMap.end()) {
 255             (*currAircraft)->setrunCount(itr->second.runCount);
 256             (*currAircraft)->setHits(itr->second.hits);
 257             (*currAircraft)->setLastUsed(itr->second.lastRun);
 258         }
 259     }
 260 }
 261
 262 void FGTrafficManager::update(double /*dt */ )
 263 {
 264     if (!enabled || !aiEnabled || (realWxEnabled && !metarValid)) {
 265         return;
 266     }
 267
 268     if (!inited) {
 269         if (!doingInit) {
 270             init();
 271         }
 272
 273         initStep();
 274         if (!inited) {
 275             return; // still more to do on next update() call
 276         }
 277     }
 278
 279     time_t now = time(NULL) + fgGetLong("/sim/time/warp");
 280     if (scheduledAircraft.size() == 0) {
 281         return;
 282     }
 283
 284     SGVec3d userCart = globals->get_aircraft_positon_cart();
 285
 286     if (currAircraft == scheduledAircraft.end()) {
 287         currAircraft = scheduledAircraft.begin();
 288     }
 289     //cerr << "Processing << " << (*currAircraft)->getRegistration() << " with score " << (*currAircraft)->getScore() << endl;
 290     if (!((*currAircraft)->update(now, userCart))) {
 291         (*currAircraft)->taint();
 292     }
 293     currAircraft++;
 294 }
 295
 296 void FGTrafficManager::release(int id)
 297 {
 298     releaseList.push_back(id);
 299 }
 300
 301 bool FGTrafficManager::isReleased(int id)
 302 {
 303     IdListIterator i = releaseList.begin();
 304     while (i != releaseList.end()) {
 305         if ((*i) == id) {
 306             releaseList.erase(i);
 307             return true;
 308         }
 309         i++;
 310     }
 311     return false;
 312 }
 313
 314
 315 void FGTrafficManager::readTimeTableFromFile(SGPath infileName)
 316 {
 317     string model;
 318     string livery;
 319     string homePort;
 320     string registration;
 321     string flightReq;
 322     bool   isHeavy;
 323     string acType;
 324     string airline;
 325     string m_class;
 326     string FlightType;
 327     double radius;
 328     double offset;
 329
 330     char buffer[256];
 331     string buffString;
 332     vector <string> tokens, depTime,arrTime;
 333     vector <string>::iterator it;
 334     ifstream infile(infileName.str().c_str());
 335     while (1) {
 336          infile.getline(buffer, 256);
 337          if (infile.eof()) {
 338              break;
 339          }
 340          //cerr << "Read line : " << buffer << endl;
 341          buffString = string(buffer);
 342          tokens.clear();
 343          Tokenize(buffString, tokens, " \t");
 344          //for (it = tokens.begin(); it != tokens.end(); it++) {
 345          //    cerr << "Tokens: " << *(it) << endl;
 346          //}
 347          //cerr << endl;
 348          if (!tokens.empty()) {
 349              if (tokens[0] == string("AC")) {
 350                  if (tokens.size() != 13) {
 351                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 352                      exit(1);
 353                  }
 354                  model          = tokens[12];
 355                  livery         = tokens[6];
 356                  homePort       = tokens[1];
 357                  registration   = tokens[2];
 358                  if (tokens[11] == string("false")) {
 359                      isHeavy = false;
 360                  } else {
 361                      isHeavy = true;
 362                  }
 363                  acType         = tokens[4];
 364                  airline        = tokens[5];
 365                  flightReq      = tokens[3] + tokens[5];
 366                  m_class        = tokens[10];
 367                  FlightType     = tokens[9];
 368                  radius         = atof(tokens[8].c_str());
 369                  offset         = atof(tokens[7].c_str());;
 370                  SG_LOG(SG_GENERAL, SG_ALERT, "Adding Aircraft" << model << " " << livery << " " << homePort << " "
 371                                                                 << registration << " " << flightReq << " " << isHeavy
 372                                                                 << " " << acType << " " << airline << " " << m_class
 373                                                                 << " " << FlightType << " " << radius << " " << offset);
 374                  scheduledAircraft.push_back(new FGAISchedule(model,
 375                                                               livery,
 376                                                               homePort,
 377                                                               registration,
 378                                                               flightReq,
 379                                                               isHeavy,
 380                                                               acType,
 381                                                               airline,
 382                                                               m_class,
 383                                                               FlightType,
 384                                                               radius,
 385                                                               offset));
 386              }
 387              if (tokens[0] == string("FLIGHT")) {
 388                  //cerr << "Found flight " << buffString << " size is : " << tokens.size() << endl;
 389                  if (tokens.size() != 10) {
 390                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 391                      exit(1);
 392                  }
 393                  string callsign = tokens[1];
 394                  string fltrules = tokens[2];
 395                  string weekdays = tokens[3];
 396                  string departurePort = tokens[5];
 397                  string arrivalPort   = tokens[7];
 398                  int    cruiseAlt     = atoi(tokens[8].c_str());
 399                  string depTimeGen    = tokens[4];
 400                  string arrTimeGen    = tokens[6];
 401                  string repeat        = "WEEK";
 402                  string requiredAircraft = tokens[9];
 403
 404                  if (weekdays.size() != 7) {
 405                      SG_LOG(SG_GENERAL, SG_ALERT, "Found misconfigured weekdays string" << weekdays);
 406                      exit(1);
 407                  }
 408                  depTime.clear();
 409                  arrTime.clear();
 410                  Tokenize(depTimeGen, depTime, ":");
 411                  Tokenize(arrTimeGen, arrTime, ":");
 412                  double dep = atof(depTime[0].c_str()) + (atof(depTime[1].c_str()) / 60.0);
 413                  double arr = atof(arrTime[0].c_str()) + (atof(arrTime[1].c_str()) / 60.0);
 414                  //cerr << "Using " << dep << " " << arr << endl;
 415                  bool arrivalWeekdayNeedsIncrement = false;
 416                  if (arr < dep) {
 417                        arrivalWeekdayNeedsIncrement = true;
 418                  }
 419                  for (int i = 0; i < 7; i++) {
 420                      int j = i+1;
 421                      if (weekdays[i] != '.') {
 422                          char buffer[4];
 423                          snprintf(buffer, 4, "%d/", j);
 424                          string departureTime = string(buffer) + depTimeGen + string(":00");
 425                          string arrivalTime;
 426                          if (!arrivalWeekdayNeedsIncrement) {
 427                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 428                          }
 429                          if (arrivalWeekdayNeedsIncrement && i != 6 ) {
 430                              snprintf(buffer, 4, "%d/", j+1);
 431                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 432                          }
 433                          if (arrivalWeekdayNeedsIncrement && i == 6 ) {
 434                              snprintf(buffer, 4, "%d/", 0);
 435                              arrivalTime   = string(buffer) + arrTimeGen  + string(":00");
 436                          }
 437                          SG_LOG(SG_GENERAL, SG_ALERT, "Adding flight " << callsign       << " "
 438                                                       << fltrules       << " "
 439                                                       <<  departurePort << " "
 440                                                       <<  arrivalPort   << " "
 441                                                       <<  cruiseAlt     << " "
 442                                                       <<  departureTime << " "
 443                                                       <<  arrivalTime   << " "
 444                                                       << repeat        << " "
 445                                                       <<  requiredAircraft);
 446
 447                          flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 448                                                                  fltrules,
 449                                                                  departurePort,
 450                                                                  arrivalPort,
 451                                                                  cruiseAlt,
 452                                                                  departureTime,
 453                                                                  arrivalTime,
 454                                                                  repeat,
 455                                                                  requiredAircraft));
 456                     }
 457                 }
 458              }
 459          }
 460
 461     }
 462     //exit(1);
 463 }
 464
 465
 466 void FGTrafficManager::Tokenize(const string& str,
 467                       vector<string>& tokens,
 468                       const string& delimiters)
 469 {
 470     // Skip delimiters at beginning.
 471     string::size_type lastPos = str.find_first_not_of(delimiters, 0);
 472     // Find first "non-delimiter".
 473     string::size_type pos     = str.find_first_of(delimiters, lastPos);
 474
 475     while (string::npos != pos || string::npos != lastPos)
 476     {
 477         // Found a token, add it to the vector.
 478         tokens.push_back(str.substr(lastPos, pos - lastPos));
 479         // Skip delimiters.  Note the "not_of"
 480         lastPos = str.find_first_not_of(delimiters, pos);
 481         // Find next "non-delimiter"
 482         pos = str.find_first_of(delimiters, lastPos);
 483     }
 484 }
 485
 486
 487 void FGTrafficManager::startXML()
 488 {
 489     //cout << "Start XML" << endl;
 490     requiredAircraft = "";
 491     homePort = "";
 492 }
 493
 494 void FGTrafficManager::endXML()
 495 {
 496     //cout << "End XML" << endl;
 497 }
 498
 499 void FGTrafficManager::startElement(const char *name,
 500                                     const XMLAttributes & atts)
 501 {
 502     const char *attval;
 503     //cout << "Start element " << name << endl;
 504     //FGTrafficManager temp;
 505     //for (int i = 0; i < atts.size(); i++)
 506     //  if (string(atts.getName(i)) == string("include"))
 507     attval = atts.getValue("include");
 508     if (attval != 0) {
 509         //cout << "including " << attval << endl;
 510         SGPath path = globals->get_fg_root();
 511         path.append("/Traffic/");
 512         path.append(attval);
 513         readXML(path.str(), *this);
 514     }
 515     elementValueStack.push_back("");
 516     //  cout << "  " << atts.getName(i) << '=' << atts.getValue(i) << endl;
 517 }
 518
 519 void FGTrafficManager::endElement(const char *name)
 520 {
 521     //cout << "End element " << name << endl;
 522     const string & value = elementValueStack.back();
 523
 524     if (!strcmp(name, "model"))
 525         mdl = value;
 526     else if (!strcmp(name, "livery"))
 527         livery = value;
 528     else if (!strcmp(name, "home-port"))
 529         homePort = value;
 530     else if (!strcmp(name, "registration"))
 531         registration = value;
 532     else if (!strcmp(name, "airline"))
 533         airline = value;
 534     else if (!strcmp(name, "actype"))
 535         acType = value;
 536     else if (!strcmp(name, "required-aircraft"))
 537         requiredAircraft = value;
 538     else if (!strcmp(name, "flighttype"))
 539         flighttype = value;
 540     else if (!strcmp(name, "radius"))
 541         radius = atoi(value.c_str());
 542     else if (!strcmp(name, "offset"))
 543         offset = atoi(value.c_str());
 544     else if (!strcmp(name, "performance-class"))
 545         m_class = value;
 546     else if (!strcmp(name, "heavy")) {
 547         if (value == string("true"))
 548             heavy = true;
 549         else
 550             heavy = false;
 551     } else if (!strcmp(name, "callsign"))
 552         callsign = value;
 553     else if (!strcmp(name, "fltrules"))
 554         fltrules = value;
 555     else if (!strcmp(name, "port"))
 556         port = value;
 557     else if (!strcmp(name, "time"))
 558         timeString = value;
 559     else if (!strcmp(name, "departure")) {
 560         departurePort = port;
 561         departureTime = timeString;
 562     } else if (!strcmp(name, "cruise-alt"))
 563         cruiseAlt = atoi(value.c_str());
 564     else if (!strcmp(name, "arrival")) {
 565         arrivalPort = port;
 566         arrivalTime = timeString;
 567     } else if (!strcmp(name, "repeat"))
 568         repeat = value;
 569     else if (!strcmp(name, "flight")) {
 570         // We have loaded and parsed all the information belonging to this flight
 571         // so we temporarily store it.
 572         //cerr << "Pusing back flight " << callsign << endl;
 573         //cerr << callsign  <<  " " << fltrules     << " "<< departurePort << " " <<  arrivalPort << " "
 574         //   << cruiseAlt <<  " " << departureTime<< " "<< arrivalTime   << " " << repeat << endl;
 575
 576         //Prioritize aircraft
 577         string apt = fgGetString("/sim/presets/airport-id");
 578         //cerr << "Airport information: " << apt << " " << departurePort << " " << arrivalPort << endl;
 579         //if (departurePort == apt) score++;
 580         //flights.push_back(new FGScheduledFlight(callsign,
 581         //                                fltrules,
 582         //                                departurePort,
 583         //                                arrivalPort,
 584         //                                cruiseAlt,
 585         //                                departureTime,
 586         //                                arrivalTime,
 587         //                                repeat));
 588         if (requiredAircraft == "") {
 589             char buffer[16];
 590             snprintf(buffer, 16, "%d", acCounter);
 591             requiredAircraft = buffer;
 592         }
 593         SG_LOG(SG_GENERAL, SG_DEBUG, "Adding flight: " << callsign << " "
 594                << fltrules << " "
 595                << departurePort << " "
 596                << arrivalPort << " "
 597                << cruiseAlt << " "
 598                << departureTime << " "
 599                << arrivalTime << " " << repeat << " " << requiredAircraft);
 600         // For database maintainance purposes, it may be convenient to
 601         //
 602         if (fgGetBool("/sim/traffic-manager/dumpdata") == true) {
 603              SG_LOG(SG_GENERAL, SG_ALERT, "Traffic Dump FLIGHT," << callsign << ","
 604                           << fltrules << ","
 605                           << departurePort << ","
 606                           << arrivalPort << ","
 607                           << cruiseAlt << ","
 608                           << departureTime << ","
 609                           << arrivalTime << "," << repeat << "," << requiredAircraft);
 610         }
 611         flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 612                                                                   fltrules,
 613                                                                   departurePort,
 614                                                                   arrivalPort,
 615                                                                   cruiseAlt,
 616                                                                   departureTime,
 617                                                                   arrivalTime,
 618                                                                   repeat,
 619                                                                   requiredAircraft));
 620         requiredAircraft = "";
 621     } else if (!strcmp(name, "aircraft")) {
 622         string isHeavy;
 623         if (heavy) {
 624             isHeavy = "true";
 625         } else {
 626             isHeavy = "false";
 627         }
 628         /*
 629         cerr << "Traffic Dump AC," << homePort << "," << registration << "," << requiredAircraft
 630              << "," << acType << "," << livery << ","
 631              << airline << "," << offset << "," << radius << "," << flighttype << "," << isHeavy << "," << mdl << endl;*/
 632         int proportion =
 633             (int) (fgGetDouble("/sim/traffic-manager/proportion") * 100);
 634         int randval = rand() & 100;
 635         if (randval <= proportion) {
 636             if (fgGetBool("/sim/traffic-manager/dumpdata") == true) {
 637                 SG_LOG(SG_GENERAL, SG_ALERT, "Traffic Dump AC," << homePort << "," << registration << "," << requiredAircraft
 638                  << "," << acType << "," << livery << ","
 639                  << airline << ","  << m_class << "," << offset << "," << radius << "," << flighttype << "," << isHeavy << "," << mdl);
 640             }
 641             //scheduledAircraft.push_back(new FGAISchedule(mdl,
 642             //                                     livery,
 643             //                                     registration,
 644             //                                     heavy,
 645             //                                     acType,
 646             //                                     airline,
 647             //                                     m_class,
 648             //                                     flighttype,
 649             //                                     radius,
 650             //                                     offset,
 651             //                                     score,
 652             //                                     flights));
 653             if (requiredAircraft == "") {
 654                 char buffer[16];
 655                 snprintf(buffer, 16, "%d", acCounter);
 656                 requiredAircraft = buffer;
 657             }
 658             if (homePort == "") {
 659                 homePort = departurePort;
 660             }
 661             scheduledAircraft.push_back(new FGAISchedule(mdl,
 662                                                          livery,
 663                                                          homePort,
 664                                                          registration,
 665                                                          requiredAircraft,
 666                                                          heavy,
 667                                                          acType,
 668                                                          airline,
 669                                                          m_class,
 670                                                          flighttype,
 671                                                          radius, offset));
 672
 673             //  while(flights.begin() != flights.end()) {
 674 //      flights.pop_back();
 675 //       }
 676         } else {
 677             cerr << "Skipping : " << randval;
 678         }
 679         acCounter++;
 680         requiredAircraft = "";
 681         homePort = "";
 682         //for (FGScheduledFlightVecIterator flt = flights.begin(); flt != flights.end(); flt++)
 683         //  {
 684         //    delete (*flt);
 685         //  }
 686         //flights.clear();
 687         SG_LOG(SG_GENERAL, SG_BULK, "Reading aircraft : "
 688                << registration << " with prioritization score " << score);
 689         score = 0;
 690     }
 691     elementValueStack.pop_back();
 692 }
 693
 694 void FGTrafficManager::data(const char *s, int len)
 695 {
 696     string token = string(s, len);
 697     //cout << "Character data " << string(s,len) << endl;
 698     elementValueStack.back() += token;
 699 }
 700
 701 void FGTrafficManager::pi(const char *target, const char *data)
 702 {
 703     //cout << "Processing instruction " << target << ' ' << data << endl;
 704 }
 705
 706 void FGTrafficManager::warning(const char *message, int line, int column)
 707 {
 708     SG_LOG(SG_IO, SG_WARN,
 709            "Warning: " << message << " (" << line << ',' << column << ')');
 710 }
 711
 712 void FGTrafficManager::error(const char *message, int line, int column)
 713 {
 714     SG_LOG(SG_IO, SG_ALERT,
 715            "Error: " << message << " (" << line << ',' << column << ')');
 716 }