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/sg.h>
  54 #include <plib/ul.h>
  55
  56 #include <simgear/compiler.h>
  57 #include <simgear/math/polar3d.hxx>
  58 #include <simgear/math/sg_geodesy.hxx>
  59 #include <simgear/misc/sg_path.hxx>
  60 #include <simgear/props/props.hxx>
  61 #include <simgear/route/waypoint.hxx>
  62 #include <simgear/structure/subsystem_mgr.hxx>
  63 #include <simgear/xml/easyxml.hxx>
  64
  65 #include <AIModel/AIAircraft.hxx>
  66 #include <AIModel/AIFlightPlan.hxx>
  67 #include <AIModel/AIBase.hxx>
  68 #include <Airports/simple.hxx>
  69 #include <Main/fg_init.hxx>
  70
  71
  72
  73 #include "TrafficMgr.hxx"
  74
  75 using std::sort;
  76
  77 /******************************************************************************
  78  * TrafficManager
  79  *****************************************************************************/
  80 FGTrafficManager::FGTrafficManager()
  81 {
  82   //score = 0;
  83   //runCount = 0;
  84   acCounter = 0;
  85 }
  86
  87 FGTrafficManager:: ~FGTrafficManager()
  88 {
  89   for (ScheduleVectorIterator sched = scheduledAircraft.begin(); sched != scheduledAircraft.end(); sched++)
  90     {
  91       delete (*sched);
  92     }
  93   scheduledAircraft.clear();
  94   flights.clear();
  95 }
  96
  97
  98 void FGTrafficManager::init()
  99 {
 100   ulDir* d, *d2;
 101   ulDirEnt* dent, *dent2;
 102   SGPath aircraftDir = globals->get_fg_root();
 103
 104   SGPath path = aircraftDir;
 105
 106   aircraftDir.append("AI/Traffic");
 107   if ((d = ulOpenDir(aircraftDir.c_str())) != NULL)
 108     {
 109       while((dent = ulReadDir(d)) != NULL) {
 110         if (string(dent->d_name) != string(".")  &&
 111             string(dent->d_name) != string("..") &&
 112             dent->d_isdir)
 113           {
 114             SGPath currACDir = aircraftDir;
 115             currACDir.append(dent->d_name);
 116             if ((d2 = ulOpenDir(currACDir.c_str())) == NULL)
 117               return;
 118             while ((dent2 = ulReadDir(d2)) != NULL) {
 119               SGPath currFile = currACDir;
 120               currFile.append(dent2->d_name);
 121               if (currFile.extension() == string("xml"))
 122                 {
 123                   SGPath currFile = currACDir;
 124                   currFile.append(dent2->d_name);
 125                   SG_LOG(SG_GENERAL, SG_INFO, "Scanning " << currFile.str() << " for traffic");
 126                   readXML(currFile.str(),*this);
 127                 }
 128             }
 129             ulCloseDir(d2);
 130           }
 131       }
 132       ulCloseDir(d);
 133     }
 134     time_t now = time(NULL) + fgGetLong("/sim/time/warp");
 135
 136     currAircraft = scheduledAircraft.begin();
 137     currAircraftClosest = scheduledAircraft.begin();
 138 }
 139
 140 void FGTrafficManager::update(double /*dt*/)
 141 {
 142
 143   time_t now = time(NULL) + fgGetLong("/sim/time/warp");
 144   if (scheduledAircraft.size() == 0) {
 145     return;
 146   }
 147   if(currAircraft == scheduledAircraft.end())
 148     {
 149       currAircraft = scheduledAircraft.begin();
 150     }
 151   if (!((*currAircraft)->update(now)))
 152     {
 153       // NOTE: With traffic manager II, this statement below is no longer true
 154       // after proper initialization, we shouldnt get here.
 155       // But let's make sure
 156       //SG_LOG( SG_GENERAL, SG_ALERT, "Failed to update aircraft schedule in traffic manager");
 157     }
 158   currAircraft++;
 159 }
 160
 161 void FGTrafficManager::release(int id)
 162 {
 163   releaseList.push_back(id);
 164 }
 165
 166 bool FGTrafficManager::isReleased(int id)
 167 {
 168   IdListIterator i = releaseList.begin();
 169   while (i != releaseList.end())
 170     {
 171       if ((*i) == id)
 172         {
 173           releaseList.erase(i);
 174           return true;
 175         }
 176       i++;
 177     }
 178   return false;
 179 }
 180 /*
 181 void FGTrafficManager::readTimeTableFromFile(SGPath infileName)
 182 {
 183     string model;
 184     string livery;
 185     string homePort;
 186     string registration;
 187     string flightReq;
 188     bool   isHeavy;
 189     string acType;
 190     string airline;
 191     string m_class;
 192     string FlightType;
 193     double radius;
 194     double offset;
 195
 196     char buffer[256];
 197     string buffString;
 198     vector <string> tokens, depTime,arrTime;
 199     vector <string>::iterator it;
 200     ifstream infile(infileName.str().c_str());
 201     while (1) {
 202          infile.getline(buffer, 256);
 203          if (infile.eof()) {
 204              break;
 205          }
 206          //cerr << "Read line : " << buffer << endl;
 207          buffString = string(buffer);
 208          tokens.clear();
 209          Tokenize(buffString, tokens, " \t");
 210          //for (it = tokens.begin(); it != tokens.end(); it++) {
 211          //    cerr << "Tokens: " << *(it) << endl;
 212          //}
 213          //cerr << endl;
 214          if (!tokens.empty()) {
 215              if (tokens[0] == string("AC")) {
 216                  if (tokens.size() != 13) {
 217                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 218                      exit(1);
 219                  }
 220                  model          = tokens[12];
 221                  livery         = tokens[6];
 222                  homePort       = tokens[1];
 223                  registration   = tokens[2];
 224                  if (tokens[11] == string("false")) {
 225                      isHeavy = false;
 226                  } else {
 227                      isHeavy = true;
 228                  }
 229                  acType         = tokens[4];
 230                  airline        = tokens[5];
 231                  flightReq      = tokens[3] + tokens[5];
 232                  m_class        = tokens[10];
 233                  FlightType     = tokens[9];
 234                  radius         = atof(tokens[8].c_str());
 235                  offset         = atof(tokens[7].c_str());;
 236                  //cerr << "Found AC string " << model << " " << livery << " " << homePort << " "
 237                  //     << registration << " " << flightReq << " " << isHeavy << " " << acType << " " << airline << " " << m_class
 238                  //     << " " << FlightType << " " << radius << " " << offset << endl;
 239                  scheduledAircraft.push_back(new FGAISchedule(model,
 240                                                               livery,
 241                                                               homePort,
 242                                                               registration,
 243                                                               flightReq,
 244                                                               isHeavy,
 245                                                               acType,
 246                                                               airline,
 247                                                               m_class,
 248                                                               FlightType,
 249                                                               radius,
 250                                                               offset));
 251              }
 252              if (tokens[0] == string("FLIGHT")) {
 253                  //cerr << "Found flight " << buffString << " size is : " << tokens.size() << endl;
 254                  if (tokens.size() != 10) {
 255                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 256                      exit(1);
 257                  }
 258                  string callsign = tokens[1];
 259                  string fltrules = tokens[2];
 260                  string weekdays = tokens[3];
 261                  string departurePort = tokens[5];
 262                  string arrivalPort   = tokens[7];
 263                  int    cruiseAlt     = atoi(tokens[8].c_str());
 264                  string depTimeGen    = tokens[4];
 265                  string arrTimeGen    = tokens[6];
 266                  string repeat        = "WEEK";
 267                  string requiredAircraft = tokens[9];
 268
 269                  if (weekdays.size() != 7) {
 270                      cerr << "Found misconfigured weekdays string" << weekdays << endl;
 271                      exit(1);
 272                  }
 273                  depTime.clear();
 274                  arrTime.clear();
 275                  Tokenize(depTimeGen, depTime, ":");
 276                  Tokenize(arrTimeGen, arrTime, ":");
 277                  double dep = atof(depTime[0].c_str()) + (atof(depTime[1].c_str()) / 60.0);
 278                  double arr = atof(arrTime[0].c_str()) + (atof(arrTime[1].c_str()) / 60.0);
 279                  //cerr << "Using " << dep << " " << arr << endl;
 280                  bool arrivalWeekdayNeedsIncrement = false;
 281                  if (arr < dep) {
 282                        arrivalWeekdayNeedsIncrement = true;
 283                  }
 284                  for (int i = 0; i < 7; i++) {
 285                      if (weekdays[i] != '.') {
 286                          char buffer[4];
 287                          snprintf(buffer, 4, "%d/", i);
 288                          string departureTime = string(buffer) + depTimeGen + string(":00");
 289                          string arrivalTime;
 290                          if (!arrivalWeekdayNeedsIncrement) {
 291                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 292                          }
 293                          if (arrivalWeekdayNeedsIncrement && i != 6 ) {
 294                              snprintf(buffer, 4, "%d/", i+1);
 295                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 296                          }
 297                          if (arrivalWeekdayNeedsIncrement && i == 6 ) {
 298                              snprintf(buffer, 4, "%d/", 0);
 299                              arrivalTime   = string(buffer) + arrTimeGen  + string(":00");
 300                          }
 301                          cerr << "Adding flight: " << callsign       << " "
 302                                                    << fltrules       << " "
 303                                                    <<  departurePort << " "
 304                                                    <<  arrivalPort   << " "
 305                                                    <<  cruiseAlt     << " "
 306                                                    <<  departureTime << " "
 307                                                    <<  arrivalTime   << " "
 308                                                    <<  repeat        << " "
 309                                                    <<  requiredAircraft << endl;
 310
 311                          flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 312                                                                  fltrules,
 313                                                                  departurePort,
 314                                                                  arrivalPort,
 315                                                                  cruiseAlt,
 316                                                                  departureTime,
 317                                                                  arrivalTime,
 318                                                                  repeat,
 319                                                                  requiredAircraft));
 320                     }
 321                 }
 322              }
 323          }
 324
 325     }
 326     //exit(1);
 327 }*/
 328
 329 /*
 330 void FGTrafficManager::Tokenize(const string& str,
 331                       vector<string>& tokens,
 332                       const string& delimiters)
 333 {
 334     // Skip delimiters at beginning.
 335     string::size_type lastPos = str.find_first_not_of(delimiters, 0);
 336     // Find first "non-delimiter".
 337     string::size_type pos     = str.find_first_of(delimiters, lastPos);
 338
 339     while (string::npos != pos || string::npos != lastPos)
 340     {
 341         // Found a token, add it to the vector.
 342         tokens.push_back(str.substr(lastPos, pos - lastPos));
 343         // Skip delimiters.  Note the "not_of"
 344         lastPos = str.find_first_not_of(delimiters, pos);
 345         // Find next "non-delimiter"
 346         pos = str.find_first_of(delimiters, lastPos);
 347     }
 348 }
 349 */
 350
 351 void  FGTrafficManager::startXML () {
 352   //cout << "Start XML" << endl;
 353   requiredAircraft = "";
 354   homePort         = "";
 355 }
 356
 357 void  FGTrafficManager::endXML () {
 358   //cout << "End XML" << endl;
 359 }
 360
 361 void  FGTrafficManager::startElement (const char * name, const XMLAttributes &atts) {
 362   const char * attval;
 363   //cout << "Start element " << name << endl;
 364   //FGTrafficManager temp;
 365   //for (int i = 0; i < atts.size(); i++)
 366   //  if (string(atts.getName(i)) == string("include"))
 367   attval = atts.getValue("include");
 368   if (attval != 0)
 369       {
 370         //cout << "including " << attval << endl;
 371         SGPath path =
 372           globals->get_fg_root();
 373         path.append("/Traffic/");
 374         path.append(attval);
 375         readXML(path.str(), *this);
 376       }
 377   elementValueStack.push_back( "" );
 378   //  cout << "  " << atts.getName(i) << '=' << atts.getValue(i) << endl;
 379 }
 380
 381 void  FGTrafficManager::endElement (const char * name) {
 382   //cout << "End element " << name << endl;
 383   string element(name);
 384   string value = elementValueStack.back();
 385   elementValueStack.pop_back();
 386
 387   if (element == string("model"))
 388     mdl = value;
 389   else if (element == string("livery"))
 390     livery = value;
 391   else if (element == string("home-port"))
 392     homePort = value;
 393   else if (element == string("registration"))
 394     registration = value;
 395   else if (element == string("airline"))
 396     airline = value;
 397   else if (element == string("actype"))
 398     acType = value;
 399   else if (element == string("required-aircraft"))
 400     requiredAircraft = value;
 401   else if (element == string("flighttype"))
 402     flighttype = value;
 403   else if (element == string("radius"))
 404     radius = atoi(value.c_str());
 405   else if (element == string("offset"))
 406     offset = atoi(value.c_str());
 407   else if (element == string("performance-class"))
 408     m_class = value;
 409   else if (element == string("heavy"))
 410     {
 411       if(value == string("true"))
 412         heavy = true;
 413       else
 414         heavy = false;
 415     }
 416   else if (element == string("callsign"))
 417     callsign = value;
 418   else if (element == string("fltrules"))
 419     fltrules = value;
 420   else if (element == string("port"))
 421     port = value;
 422   else if (element == string("time"))
 423     timeString = value;
 424   else if (element == string("departure"))
 425     {
 426       departurePort = port;
 427       departureTime = timeString;
 428     }
 429   else if (element == string("cruise-alt"))
 430     cruiseAlt = atoi(value.c_str());
 431   else if (element == string("arrival"))
 432     {
 433       arrivalPort = port;
 434       arrivalTime = timeString;
 435     }
 436   else if (element == string("repeat"))
 437     repeat = value;
 438   else if (element == string("flight"))
 439     {
 440       // We have loaded and parsed all the information belonging to this flight
 441       // so we temporarily store it.
 442       //cerr << "Pusing back flight " << callsign << endl;
 443       //cerr << callsign  <<  " " << fltrules     << " "<< departurePort << " " <<  arrivalPort << " "
 444       //   << cruiseAlt <<  " " << departureTime<< " "<< arrivalTime   << " " << repeat << endl;
 445
 446       //Prioritize aircraft
 447       string apt = fgGetString("/sim/presets/airport-id");
 448       //cerr << "Airport information: " << apt << " " << departurePort << " " << arrivalPort << endl;
 449       //if (departurePort == apt) score++;
 450       //flights.push_back(new FGScheduledFlight(callsign,
 451         //                                fltrules,
 452         //                                departurePort,
 453         //                                arrivalPort,
 454         //                                cruiseAlt,
 455         //                                departureTime,
 456         //                                arrivalTime,
 457         //                                repeat));
 458     if (requiredAircraft == "") {
 459         char buffer[16];
 460         snprintf(buffer, 16, "%d", acCounter);
 461         requiredAircraft = buffer;
 462     }
 463     SG_LOG(SG_GENERAL, SG_DEBUG, "Adding flight: " << callsign       << " "
 464                               << fltrules       << " "
 465                               <<  departurePort << " "
 466                               <<  arrivalPort   << " "
 467                               <<  cruiseAlt     << " "
 468                               <<  departureTime << " "
 469                               <<  arrivalTime   << " "
 470                               <<  repeat        << " "
 471                               <<  requiredAircraft);
 472
 473      flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 474                                                                  fltrules,
 475                                                                  departurePort,
 476                                                                  arrivalPort,
 477                                                                  cruiseAlt,
 478                                                                  departureTime,
 479                                                                  arrivalTime,
 480                                                                  repeat,
 481                                                                  requiredAircraft));
 482       requiredAircraft = "";
 483   }
 484   else if (element == string("aircraft"))
 485     {
 486       int proportion = (int) (fgGetDouble("/sim/traffic-manager/proportion") * 100);
 487       int randval = rand() & 100;
 488       if (randval < proportion) {
 489           //scheduledAircraft.push_back(new FGAISchedule(mdl,
 490         //                                     livery,
 491         //                                     registration,
 492         //                                     heavy,
 493         //                                     acType,
 494         //                                     airline,
 495         //                                     m_class,
 496         //                                     flighttype,
 497         //                                     radius,
 498         //                                     offset,
 499         //                                     score,
 500         //                                     flights));
 501     if (requiredAircraft == "") {
 502         char buffer[16];
 503         snprintf(buffer, 16, "%d", acCounter);
 504         requiredAircraft = buffer;
 505     }
 506     if (homePort == "") {
 507         homePort = departurePort;
 508     }
 509             scheduledAircraft.push_back(new FGAISchedule(mdl,
 510                                                          livery,
 511                                                          homePort,
 512                                                          registration,
 513                                                          requiredAircraft,
 514                                                          heavy,
 515                                                          acType,
 516                                                          airline,
 517                                                          m_class,
 518                                                          flighttype,
 519                                                          radius,
 520                                                          offset));
 521
 522      //  while(flights.begin() != flights.end()) {
 523 //      flights.pop_back();
 524 //       }
 525         }
 526     acCounter++;
 527     requiredAircraft = "";
 528     homePort = "";
 529   //for (FGScheduledFlightVecIterator flt = flights.begin(); flt != flights.end(); flt++)
 530   //  {
 531   //    delete (*flt);
 532   //  }
 533   //flights.clear();
 534       SG_LOG( SG_GENERAL, SG_BULK, "Reading aircraft : "
 535               << registration
 536               << " with prioritization score "
 537               << score);
 538       score = 0;
 539     }
 540 }
 541
 542 void  FGTrafficManager::data (const char * s, int len) {
 543   string token = string(s,len);
 544   //cout << "Character data " << string(s,len) << endl;
 545   elementValueStack.back() += token;
 546 }
 547
 548 void  FGTrafficManager::pi (const char * target, const char * data) {
 549   //cout << "Processing instruction " << target << ' ' << data << endl;
 550 }
 551
 552 void  FGTrafficManager::warning (const char * message, int line, int column) {
 553   SG_LOG(SG_IO, SG_WARN, "Warning: " << message << " (" << line << ',' << column << ')');
 554 }
 555
 556 void  FGTrafficManager::error (const char * message, int line, int column) {
 557   SG_LOG(SG_IO, SG_ALERT, "Error: " << message << " (" << line << ',' << column << ')');
 558 }
 559