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 <iostream>
  46 #include <fstream>
  47
  48
  49 #include <string>
  50 #include <vector>
  51 #include <algorithm>
  52
  53 #include <plib/ul.h>
  54
  55 #include <simgear/compiler.h>
  56 #include <simgear/misc/sg_path.hxx>
  57 #include <simgear/props/props.hxx>
  58 #include <simgear/route/waypoint.hxx>
  59 #include <simgear/structure/subsystem_mgr.hxx>
  60 #include <simgear/xml/easyxml.hxx>
  61
  62 #include <AIModel/AIAircraft.hxx>
  63 #include <AIModel/AIFlightPlan.hxx>
  64 #include <AIModel/AIBase.hxx>
  65 #include <Airports/simple.hxx>
  66 #include <Main/fg_init.hxx>
  67
  68
  69
  70 #include "TrafficMgr.hxx"
  71
  72 using std::sort;
  73
  74 /******************************************************************************
  75  * TrafficManager
  76  *****************************************************************************/
  77 FGTrafficManager::FGTrafficManager()
  78 {
  79   //score = 0;
  80   //runCount = 0;
  81   acCounter = 0;
  82 }
  83
  84 FGTrafficManager:: ~FGTrafficManager()
  85 {
  86   for (ScheduleVectorIterator sched = scheduledAircraft.begin(); sched != scheduledAircraft.end(); sched++)
  87     {
  88       delete (*sched);
  89     }
  90   scheduledAircraft.clear();
  91   flights.clear();
  92 }
  93
  94
  95 void FGTrafficManager::init()
  96 {
  97   ulDir* d, *d2;
  98   ulDirEnt* dent, *dent2;
  99   SGPath aircraftDir = globals->get_fg_root();
 100
 101   SGPath path = aircraftDir;
 102
 103   aircraftDir.append("AI/Traffic");
 104   if ((d = ulOpenDir(aircraftDir.c_str())) != NULL)
 105     {
 106       while((dent = ulReadDir(d)) != NULL) {
 107         if (string(dent->d_name) != string(".")  &&
 108             string(dent->d_name) != string("..") &&
 109             dent->d_isdir)
 110           {
 111             SGPath currACDir = aircraftDir;
 112             currACDir.append(dent->d_name);
 113             if ((d2 = ulOpenDir(currACDir.c_str())) == NULL)
 114               return;
 115             while ((dent2 = ulReadDir(d2)) != NULL) {
 116               SGPath currFile = currACDir;
 117               currFile.append(dent2->d_name);
 118               if (currFile.extension() == string("xml"))
 119                 {
 120                   SGPath currFile = currACDir;
 121                   currFile.append(dent2->d_name);
 122                   SG_LOG(SG_GENERAL, SG_INFO, "Scanning " << currFile.str() << " for traffic");
 123                   readXML(currFile.str(),*this);
 124                 }
 125             }
 126             ulCloseDir(d2);
 127           }
 128       }
 129       ulCloseDir(d);
 130     }
 131     time_t now = time(NULL) + fgGetLong("/sim/time/warp");
 132
 133     currAircraft = scheduledAircraft.begin();
 134     currAircraftClosest = scheduledAircraft.begin();
 135 }
 136
 137 void FGTrafficManager::update(double /*dt*/)
 138 {
 139
 140   time_t now = time(NULL) + fgGetLong("/sim/time/warp");
 141   if (scheduledAircraft.size() == 0) {
 142     return;
 143   }
 144   if(currAircraft == scheduledAircraft.end())
 145     {
 146       currAircraft = scheduledAircraft.begin();
 147     }
 148   if (!((*currAircraft)->update(now)))
 149     {
 150       // NOTE: With traffic manager II, this statement below is no longer true
 151       // after proper initialization, we shouldnt get here.
 152       // But let's make sure
 153       //SG_LOG( SG_GENERAL, SG_ALERT, "Failed to update aircraft schedule in traffic manager");
 154     }
 155   currAircraft++;
 156 }
 157
 158 void FGTrafficManager::release(int id)
 159 {
 160   releaseList.push_back(id);
 161 }
 162
 163 bool FGTrafficManager::isReleased(int id)
 164 {
 165   IdListIterator i = releaseList.begin();
 166   while (i != releaseList.end())
 167     {
 168       if ((*i) == id)
 169         {
 170           releaseList.erase(i);
 171           return true;
 172         }
 173       i++;
 174     }
 175   return false;
 176 }
 177 /*
 178 void FGTrafficManager::readTimeTableFromFile(SGPath infileName)
 179 {
 180     string model;
 181     string livery;
 182     string homePort;
 183     string registration;
 184     string flightReq;
 185     bool   isHeavy;
 186     string acType;
 187     string airline;
 188     string m_class;
 189     string FlightType;
 190     double radius;
 191     double offset;
 192
 193     char buffer[256];
 194     string buffString;
 195     vector <string> tokens, depTime,arrTime;
 196     vector <string>::iterator it;
 197     ifstream infile(infileName.str().c_str());
 198     while (1) {
 199          infile.getline(buffer, 256);
 200          if (infile.eof()) {
 201              break;
 202          }
 203          //cerr << "Read line : " << buffer << endl;
 204          buffString = string(buffer);
 205          tokens.clear();
 206          Tokenize(buffString, tokens, " \t");
 207          //for (it = tokens.begin(); it != tokens.end(); it++) {
 208          //    cerr << "Tokens: " << *(it) << endl;
 209          //}
 210          //cerr << endl;
 211          if (!tokens.empty()) {
 212              if (tokens[0] == string("AC")) {
 213                  if (tokens.size() != 13) {
 214                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 215                      exit(1);
 216                  }
 217                  model          = tokens[12];
 218                  livery         = tokens[6];
 219                  homePort       = tokens[1];
 220                  registration   = tokens[2];
 221                  if (tokens[11] == string("false")) {
 222                      isHeavy = false;
 223                  } else {
 224                      isHeavy = true;
 225                  }
 226                  acType         = tokens[4];
 227                  airline        = tokens[5];
 228                  flightReq      = tokens[3] + tokens[5];
 229                  m_class        = tokens[10];
 230                  FlightType     = tokens[9];
 231                  radius         = atof(tokens[8].c_str());
 232                  offset         = atof(tokens[7].c_str());;
 233                  //cerr << "Found AC string " << model << " " << livery << " " << homePort << " "
 234                  //     << registration << " " << flightReq << " " << isHeavy << " " << acType << " " << airline << " " << m_class
 235                  //     << " " << FlightType << " " << radius << " " << offset << endl;
 236                  scheduledAircraft.push_back(new FGAISchedule(model,
 237                                                               livery,
 238                                                               homePort,
 239                                                               registration,
 240                                                               flightReq,
 241                                                               isHeavy,
 242                                                               acType,
 243                                                               airline,
 244                                                               m_class,
 245                                                               FlightType,
 246                                                               radius,
 247                                                               offset));
 248              }
 249              if (tokens[0] == string("FLIGHT")) {
 250                  //cerr << "Found flight " << buffString << " size is : " << tokens.size() << endl;
 251                  if (tokens.size() != 10) {
 252                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 253                      exit(1);
 254                  }
 255                  string callsign = tokens[1];
 256                  string fltrules = tokens[2];
 257                  string weekdays = tokens[3];
 258                  string departurePort = tokens[5];
 259                  string arrivalPort   = tokens[7];
 260                  int    cruiseAlt     = atoi(tokens[8].c_str());
 261                  string depTimeGen    = tokens[4];
 262                  string arrTimeGen    = tokens[6];
 263                  string repeat        = "WEEK";
 264                  string requiredAircraft = tokens[9];
 265
 266                  if (weekdays.size() != 7) {
 267                      cerr << "Found misconfigured weekdays string" << weekdays << endl;
 268                      exit(1);
 269                  }
 270                  depTime.clear();
 271                  arrTime.clear();
 272                  Tokenize(depTimeGen, depTime, ":");
 273                  Tokenize(arrTimeGen, arrTime, ":");
 274                  double dep = atof(depTime[0].c_str()) + (atof(depTime[1].c_str()) / 60.0);
 275                  double arr = atof(arrTime[0].c_str()) + (atof(arrTime[1].c_str()) / 60.0);
 276                  //cerr << "Using " << dep << " " << arr << endl;
 277                  bool arrivalWeekdayNeedsIncrement = false;
 278                  if (arr < dep) {
 279                        arrivalWeekdayNeedsIncrement = true;
 280                  }
 281                  for (int i = 0; i < 7; i++) {
 282                      if (weekdays[i] != '.') {
 283                          char buffer[4];
 284                          snprintf(buffer, 4, "%d/", i);
 285                          string departureTime = string(buffer) + depTimeGen + string(":00");
 286                          string arrivalTime;
 287                          if (!arrivalWeekdayNeedsIncrement) {
 288                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 289                          }
 290                          if (arrivalWeekdayNeedsIncrement && i != 6 ) {
 291                              snprintf(buffer, 4, "%d/", i+1);
 292                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 293                          }
 294                          if (arrivalWeekdayNeedsIncrement && i == 6 ) {
 295                              snprintf(buffer, 4, "%d/", 0);
 296                              arrivalTime   = string(buffer) + arrTimeGen  + string(":00");
 297                          }
 298                          cerr << "Adding flight: " << callsign       << " "
 299                                                    << fltrules       << " "
 300                                                    <<  departurePort << " "
 301                                                    <<  arrivalPort   << " "
 302                                                    <<  cruiseAlt     << " "
 303                                                    <<  departureTime << " "
 304                                                    <<  arrivalTime   << " "
 305                                                    <<  repeat        << " "
 306                                                    <<  requiredAircraft << endl;
 307
 308                          flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 309                                                                  fltrules,
 310                                                                  departurePort,
 311                                                                  arrivalPort,
 312                                                                  cruiseAlt,
 313                                                                  departureTime,
 314                                                                  arrivalTime,
 315                                                                  repeat,
 316                                                                  requiredAircraft));
 317                     }
 318                 }
 319              }
 320          }
 321
 322     }
 323     //exit(1);
 324 }*/
 325
 326 /*
 327 void FGTrafficManager::Tokenize(const string& str,
 328                       vector<string>& tokens,
 329                       const string& delimiters)
 330 {
 331     // Skip delimiters at beginning.
 332     string::size_type lastPos = str.find_first_not_of(delimiters, 0);
 333     // Find first "non-delimiter".
 334     string::size_type pos     = str.find_first_of(delimiters, lastPos);
 335
 336     while (string::npos != pos || string::npos != lastPos)
 337     {
 338         // Found a token, add it to the vector.
 339         tokens.push_back(str.substr(lastPos, pos - lastPos));
 340         // Skip delimiters.  Note the "not_of"
 341         lastPos = str.find_first_not_of(delimiters, pos);
 342         // Find next "non-delimiter"
 343         pos = str.find_first_of(delimiters, lastPos);
 344     }
 345 }
 346 */
 347
 348 void  FGTrafficManager::startXML () {
 349   //cout << "Start XML" << endl;
 350   requiredAircraft = "";
 351   homePort         = "";
 352 }
 353
 354 void  FGTrafficManager::endXML () {
 355   //cout << "End XML" << endl;
 356 }
 357
 358 void  FGTrafficManager::startElement (const char * name, const XMLAttributes &atts) {
 359   const char * attval;
 360   //cout << "Start element " << name << endl;
 361   //FGTrafficManager temp;
 362   //for (int i = 0; i < atts.size(); i++)
 363   //  if (string(atts.getName(i)) == string("include"))
 364   attval = atts.getValue("include");
 365   if (attval != 0)
 366       {
 367         //cout << "including " << attval << endl;
 368         SGPath path =
 369           globals->get_fg_root();
 370         path.append("/Traffic/");
 371         path.append(attval);
 372         readXML(path.str(), *this);
 373       }
 374   elementValueStack.push_back( "" );
 375   //  cout << "  " << atts.getName(i) << '=' << atts.getValue(i) << endl;
 376 }
 377
 378 void  FGTrafficManager::endElement (const char * name) {
 379   //cout << "End element " << name << endl;
 380   string element(name);
 381   string value = elementValueStack.back();
 382   elementValueStack.pop_back();
 383
 384   if (element == string("model"))
 385     mdl = value;
 386   else if (element == string("livery"))
 387     livery = value;
 388   else if (element == string("home-port"))
 389     homePort = value;
 390   else if (element == string("registration"))
 391     registration = value;
 392   else if (element == string("airline"))
 393     airline = value;
 394   else if (element == string("actype"))
 395     acType = value;
 396   else if (element == string("required-aircraft"))
 397     requiredAircraft = value;
 398   else if (element == string("flighttype"))
 399     flighttype = value;
 400   else if (element == string("radius"))
 401     radius = atoi(value.c_str());
 402   else if (element == string("offset"))
 403     offset = atoi(value.c_str());
 404   else if (element == string("performance-class"))
 405     m_class = value;
 406   else if (element == string("heavy"))
 407     {
 408       if(value == string("true"))
 409         heavy = true;
 410       else
 411         heavy = false;
 412     }
 413   else if (element == string("callsign"))
 414     callsign = value;
 415   else if (element == string("fltrules"))
 416     fltrules = value;
 417   else if (element == string("port"))
 418     port = value;
 419   else if (element == string("time"))
 420     timeString = value;
 421   else if (element == string("departure"))
 422     {
 423       departurePort = port;
 424       departureTime = timeString;
 425     }
 426   else if (element == string("cruise-alt"))
 427     cruiseAlt = atoi(value.c_str());
 428   else if (element == string("arrival"))
 429     {
 430       arrivalPort = port;
 431       arrivalTime = timeString;
 432     }
 433   else if (element == string("repeat"))
 434     repeat = value;
 435   else if (element == string("flight"))
 436     {
 437       // We have loaded and parsed all the information belonging to this flight
 438       // so we temporarily store it.
 439       //cerr << "Pusing back flight " << callsign << endl;
 440       //cerr << callsign  <<  " " << fltrules     << " "<< departurePort << " " <<  arrivalPort << " "
 441       //   << cruiseAlt <<  " " << departureTime<< " "<< arrivalTime   << " " << repeat << endl;
 442
 443       //Prioritize aircraft
 444       string apt = fgGetString("/sim/presets/airport-id");
 445       //cerr << "Airport information: " << apt << " " << departurePort << " " << arrivalPort << endl;
 446       //if (departurePort == apt) score++;
 447       //flights.push_back(new FGScheduledFlight(callsign,
 448         //                                fltrules,
 449         //                                departurePort,
 450         //                                arrivalPort,
 451         //                                cruiseAlt,
 452         //                                departureTime,
 453         //                                arrivalTime,
 454         //                                repeat));
 455     if (requiredAircraft == "") {
 456         char buffer[16];
 457         snprintf(buffer, 16, "%d", acCounter);
 458         requiredAircraft = buffer;
 459     }
 460     SG_LOG(SG_GENERAL, SG_DEBUG, "Adding flight: " << callsign       << " "
 461                               << fltrules       << " "
 462                               <<  departurePort << " "
 463                               <<  arrivalPort   << " "
 464                               <<  cruiseAlt     << " "
 465                               <<  departureTime << " "
 466                               <<  arrivalTime   << " "
 467                               <<  repeat        << " "
 468                               <<  requiredAircraft);
 469
 470      flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 471                                                                  fltrules,
 472                                                                  departurePort,
 473                                                                  arrivalPort,
 474                                                                  cruiseAlt,
 475                                                                  departureTime,
 476                                                                  arrivalTime,
 477                                                                  repeat,
 478                                                                  requiredAircraft));
 479       requiredAircraft = "";
 480   }
 481   else if (element == string("aircraft"))
 482     {
 483       int proportion = (int) (fgGetDouble("/sim/traffic-manager/proportion") * 100);
 484       int randval = rand() & 100;
 485       if (randval < proportion) {
 486           //scheduledAircraft.push_back(new FGAISchedule(mdl,
 487         //                                     livery,
 488         //                                     registration,
 489         //                                     heavy,
 490         //                                     acType,
 491         //                                     airline,
 492         //                                     m_class,
 493         //                                     flighttype,
 494         //                                     radius,
 495         //                                     offset,
 496         //                                     score,
 497         //                                     flights));
 498     if (requiredAircraft == "") {
 499         char buffer[16];
 500         snprintf(buffer, 16, "%d", acCounter);
 501         requiredAircraft = buffer;
 502     }
 503     if (homePort == "") {
 504         homePort = departurePort;
 505     }
 506             scheduledAircraft.push_back(new FGAISchedule(mdl,
 507                                                          livery,
 508                                                          homePort,
 509                                                          registration,
 510                                                          requiredAircraft,
 511                                                          heavy,
 512                                                          acType,
 513                                                          airline,
 514                                                          m_class,
 515                                                          flighttype,
 516                                                          radius,
 517                                                          offset));
 518
 519      //  while(flights.begin() != flights.end()) {
 520 //      flights.pop_back();
 521 //       }
 522         }
 523     acCounter++;
 524     requiredAircraft = "";
 525     homePort = "";
 526   //for (FGScheduledFlightVecIterator flt = flights.begin(); flt != flights.end(); flt++)
 527   //  {
 528   //    delete (*flt);
 529   //  }
 530   //flights.clear();
 531       SG_LOG( SG_GENERAL, SG_BULK, "Reading aircraft : "
 532               << registration
 533               << " with prioritization score "
 534               << score);
 535       score = 0;
 536     }
 537 }
 538
 539 void  FGTrafficManager::data (const char * s, int len) {
 540   string token = string(s,len);
 541   //cout << "Character data " << string(s,len) << endl;
 542   elementValueStack.back() += token;
 543 }
 544
 545 void  FGTrafficManager::pi (const char * target, const char * data) {
 546   //cout << "Processing instruction " << target << ' ' << data << endl;
 547 }
 548
 549 void  FGTrafficManager::warning (const char * message, int line, int column) {
 550   SG_LOG(SG_IO, SG_WARN, "Warning: " << message << " (" << line << ',' << column << ')');
 551 }
 552
 553 void  FGTrafficManager::error (const char * message, int line, int column) {
 554   SG_LOG(SG_IO, SG_ALERT, "Error: " << message << " (" << line << ',' << column << ')');
 555 }
 556