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
  54 #include <plib/ul.h>
  55
  56 #include <simgear/compiler.h>
  57 #include <simgear/misc/sg_path.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 {
  81   //score = 0;
  82   //runCount = 0;
  83   acCounter = 0;
  84 }
  85
  86 FGTrafficManager:: ~FGTrafficManager()
  87 {
  88   for (ScheduleVectorIterator sched = scheduledAircraft.begin(); sched != scheduledAircraft.end(); sched++)
  89     {
  90       delete (*sched);
  91     }
  92   scheduledAircraft.clear();
  93   flights.clear();
  94 }
  95
  96
  97 void FGTrafficManager::init()
  98 {
  99   ulDir* d, *d2;
 100   ulDirEnt* dent, *dent2;
 101   SGPath aircraftDir = globals->get_fg_root();
 102
 103   SGPath path = aircraftDir;
 104
 105   aircraftDir.append("AI/Traffic");
 106   if ((d = ulOpenDir(aircraftDir.c_str())) != NULL)
 107     {
 108       while((dent = ulReadDir(d)) != NULL) {
 109         if (string(dent->d_name) != string(".")  &&
 110             string(dent->d_name) != string("..") &&
 111             dent->d_isdir)
 112           {
 113             SGPath currACDir = aircraftDir;
 114             currACDir.append(dent->d_name);
 115             if ((d2 = ulOpenDir(currACDir.c_str())) == NULL)
 116               return;
 117             while ((dent2 = ulReadDir(d2)) != NULL) {
 118               SGPath currFile = currACDir;
 119               currFile.append(dent2->d_name);
 120               if (currFile.extension() == string("xml"))
 121                 {
 122                   SGPath currFile = currACDir;
 123                   currFile.append(dent2->d_name);
 124                   SG_LOG(SG_GENERAL, SG_DEBUG, "Scanning " << currFile.str() << " for traffic");
 125                   readXML(currFile.str(),*this);
 126                 }
 127             }
 128             ulCloseDir(d2);
 129           }
 130       }
 131       ulCloseDir(d);
 132     }
 133
 134     currAircraft = scheduledAircraft.begin();
 135     currAircraftClosest = scheduledAircraft.begin();
 136 }
 137
 138 void FGTrafficManager::update(double /*dt*/)
 139 {
 140
 141   time_t now = time(NULL) + fgGetLong("/sim/time/warp");
 142   if (scheduledAircraft.size() == 0) {
 143     return;
 144   }
 145
 146   SGVec3d userCart = SGVec3d::fromGeod(SGGeod::fromDeg(
 147     fgGetDouble("/position/longitude-deg"),
 148     fgGetDouble("/position/latitude-deg")));
 149
 150   if(currAircraft == scheduledAircraft.end())
 151     {
 152       currAircraft = scheduledAircraft.begin();
 153     }
 154   if (!((*currAircraft)->update(now, userCart)))
 155     {
 156       // NOTE: With traffic manager II, this statement below is no longer true
 157       // after proper initialization, we shouldnt get here.
 158       // But let's make sure
 159       //SG_LOG( SG_GENERAL, SG_ALERT, "Failed to update aircraft schedule in traffic manager");
 160     }
 161   currAircraft++;
 162 }
 163
 164 void FGTrafficManager::release(int id)
 165 {
 166   releaseList.push_back(id);
 167 }
 168
 169 bool FGTrafficManager::isReleased(int id)
 170 {
 171   IdListIterator i = releaseList.begin();
 172   while (i != releaseList.end())
 173     {
 174       if ((*i) == id)
 175         {
 176           releaseList.erase(i);
 177           return true;
 178         }
 179       i++;
 180     }
 181   return false;
 182 }
 183 /*
 184 void FGTrafficManager::readTimeTableFromFile(SGPath infileName)
 185 {
 186     string model;
 187     string livery;
 188     string homePort;
 189     string registration;
 190     string flightReq;
 191     bool   isHeavy;
 192     string acType;
 193     string airline;
 194     string m_class;
 195     string FlightType;
 196     double radius;
 197     double offset;
 198
 199     char buffer[256];
 200     string buffString;
 201     vector <string> tokens, depTime,arrTime;
 202     vector <string>::iterator it;
 203     ifstream infile(infileName.str().c_str());
 204     while (1) {
 205          infile.getline(buffer, 256);
 206          if (infile.eof()) {
 207              break;
 208          }
 209          //cerr << "Read line : " << buffer << endl;
 210          buffString = string(buffer);
 211          tokens.clear();
 212          Tokenize(buffString, tokens, " \t");
 213          //for (it = tokens.begin(); it != tokens.end(); it++) {
 214          //    cerr << "Tokens: " << *(it) << endl;
 215          //}
 216          //cerr << endl;
 217          if (!tokens.empty()) {
 218              if (tokens[0] == string("AC")) {
 219                  if (tokens.size() != 13) {
 220                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 221                      exit(1);
 222                  }
 223                  model          = tokens[12];
 224                  livery         = tokens[6];
 225                  homePort       = tokens[1];
 226                  registration   = tokens[2];
 227                  if (tokens[11] == string("false")) {
 228                      isHeavy = false;
 229                  } else {
 230                      isHeavy = true;
 231                  }
 232                  acType         = tokens[4];
 233                  airline        = tokens[5];
 234                  flightReq      = tokens[3] + tokens[5];
 235                  m_class        = tokens[10];
 236                  FlightType     = tokens[9];
 237                  radius         = atof(tokens[8].c_str());
 238                  offset         = atof(tokens[7].c_str());;
 239                  //cerr << "Found AC string " << model << " " << livery << " " << homePort << " "
 240                  //     << registration << " " << flightReq << " " << isHeavy << " " << acType << " " << airline << " " << m_class
 241                  //     << " " << FlightType << " " << radius << " " << offset << endl;
 242                  scheduledAircraft.push_back(new FGAISchedule(model,
 243                                                               livery,
 244                                                               homePort,
 245                                                               registration,
 246                                                               flightReq,
 247                                                               isHeavy,
 248                                                               acType,
 249                                                               airline,
 250                                                               m_class,
 251                                                               FlightType,
 252                                                               radius,
 253                                                               offset));
 254              }
 255              if (tokens[0] == string("FLIGHT")) {
 256                  //cerr << "Found flight " << buffString << " size is : " << tokens.size() << endl;
 257                  if (tokens.size() != 10) {
 258                      SG_LOG(SG_GENERAL, SG_ALERT, "Error parsing traffic file " << infileName.str() << " at " << buffString);
 259                      exit(1);
 260                  }
 261                  string callsign = tokens[1];
 262                  string fltrules = tokens[2];
 263                  string weekdays = tokens[3];
 264                  string departurePort = tokens[5];
 265                  string arrivalPort   = tokens[7];
 266                  int    cruiseAlt     = atoi(tokens[8].c_str());
 267                  string depTimeGen    = tokens[4];
 268                  string arrTimeGen    = tokens[6];
 269                  string repeat        = "WEEK";
 270                  string requiredAircraft = tokens[9];
 271
 272                  if (weekdays.size() != 7) {
 273                      cerr << "Found misconfigured weekdays string" << weekdays << endl;
 274                      exit(1);
 275                  }
 276                  depTime.clear();
 277                  arrTime.clear();
 278                  Tokenize(depTimeGen, depTime, ":");
 279                  Tokenize(arrTimeGen, arrTime, ":");
 280                  double dep = atof(depTime[0].c_str()) + (atof(depTime[1].c_str()) / 60.0);
 281                  double arr = atof(arrTime[0].c_str()) + (atof(arrTime[1].c_str()) / 60.0);
 282                  //cerr << "Using " << dep << " " << arr << endl;
 283                  bool arrivalWeekdayNeedsIncrement = false;
 284                  if (arr < dep) {
 285                        arrivalWeekdayNeedsIncrement = true;
 286                  }
 287                  for (int i = 0; i < 7; i++) {
 288                      if (weekdays[i] != '.') {
 289                          char buffer[4];
 290                          snprintf(buffer, 4, "%d/", i);
 291                          string departureTime = string(buffer) + depTimeGen + string(":00");
 292                          string arrivalTime;
 293                          if (!arrivalWeekdayNeedsIncrement) {
 294                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 295                          }
 296                          if (arrivalWeekdayNeedsIncrement && i != 6 ) {
 297                              snprintf(buffer, 4, "%d/", i+1);
 298                              arrivalTime   = string(buffer) + arrTimeGen + string(":00");
 299                          }
 300                          if (arrivalWeekdayNeedsIncrement && i == 6 ) {
 301                              snprintf(buffer, 4, "%d/", 0);
 302                              arrivalTime   = string(buffer) + arrTimeGen  + string(":00");
 303                          }
 304                          cerr << "Adding flight: " << callsign       << " "
 305                                                    << fltrules       << " "
 306                                                    <<  departurePort << " "
 307                                                    <<  arrivalPort   << " "
 308                                                    <<  cruiseAlt     << " "
 309                                                    <<  departureTime << " "
 310                                                    <<  arrivalTime   << " "
 311                                                    <<  repeat        << " "
 312                                                    <<  requiredAircraft << endl;
 313
 314                          flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 315                                                                  fltrules,
 316                                                                  departurePort,
 317                                                                  arrivalPort,
 318                                                                  cruiseAlt,
 319                                                                  departureTime,
 320                                                                  arrivalTime,
 321                                                                  repeat,
 322                                                                  requiredAircraft));
 323                     }
 324                 }
 325              }
 326          }
 327
 328     }
 329     //exit(1);
 330 }*/
 331
 332 /*
 333 void FGTrafficManager::Tokenize(const string& str,
 334                       vector<string>& tokens,
 335                       const string& delimiters)
 336 {
 337     // Skip delimiters at beginning.
 338     string::size_type lastPos = str.find_first_not_of(delimiters, 0);
 339     // Find first "non-delimiter".
 340     string::size_type pos     = str.find_first_of(delimiters, lastPos);
 341
 342     while (string::npos != pos || string::npos != lastPos)
 343     {
 344         // Found a token, add it to the vector.
 345         tokens.push_back(str.substr(lastPos, pos - lastPos));
 346         // Skip delimiters.  Note the "not_of"
 347         lastPos = str.find_first_not_of(delimiters, pos);
 348         // Find next "non-delimiter"
 349         pos = str.find_first_of(delimiters, lastPos);
 350     }
 351 }
 352 */
 353
 354 void  FGTrafficManager::startXML () {
 355   //cout << "Start XML" << endl;
 356   requiredAircraft = "";
 357   homePort         = "";
 358 }
 359
 360 void  FGTrafficManager::endXML () {
 361   //cout << "End XML" << endl;
 362 }
 363
 364 void  FGTrafficManager::startElement (const char * name, const XMLAttributes &atts) {
 365   const char * attval;
 366   //cout << "Start element " << name << endl;
 367   //FGTrafficManager temp;
 368   //for (int i = 0; i < atts.size(); i++)
 369   //  if (string(atts.getName(i)) == string("include"))
 370   attval = atts.getValue("include");
 371   if (attval != 0)
 372       {
 373         //cout << "including " << attval << endl;
 374         SGPath path =
 375           globals->get_fg_root();
 376         path.append("/Traffic/");
 377         path.append(attval);
 378         readXML(path.str(), *this);
 379       }
 380   elementValueStack.push_back( "" );
 381   //  cout << "  " << atts.getName(i) << '=' << atts.getValue(i) << endl;
 382 }
 383
 384 void  FGTrafficManager::endElement (const char * name) {
 385   //cout << "End element " << name << endl;
 386   const string& value = elementValueStack.back();
 387
 388   if (!strcmp(name, "model"))
 389     mdl = value;
 390   else if (!strcmp(name, "livery"))
 391     livery = value;
 392   else if (!strcmp(name, "home-port"))
 393     homePort = value;
 394   else if (!strcmp(name, "registration"))
 395     registration = value;
 396   else if (!strcmp(name, "airline"))
 397     airline = value;
 398   else if (!strcmp(name, "actype"))
 399     acType = value;
 400   else if (!strcmp(name, "required-aircraft"))
 401     requiredAircraft = value;
 402   else if (!strcmp(name, "flighttype"))
 403     flighttype = value;
 404   else if (!strcmp(name, "radius"))
 405     radius = atoi(value.c_str());
 406   else if (!strcmp(name, "offset"))
 407     offset = atoi(value.c_str());
 408   else if (!strcmp(name, "performance-class"))
 409     m_class = value;
 410   else if (!strcmp(name, "heavy"))
 411     {
 412       if(value == string("true"))
 413         heavy = true;
 414       else
 415         heavy = false;
 416     }
 417   else if (!strcmp(name, "callsign"))
 418     callsign = value;
 419   else if (!strcmp(name, "fltrules"))
 420     fltrules = value;
 421   else if (!strcmp(name, "port"))
 422     port = value;
 423   else if (!strcmp(name, "time"))
 424     timeString = value;
 425   else if (!strcmp(name, "departure"))
 426     {
 427       departurePort = port;
 428       departureTime = timeString;
 429     }
 430   else if (!strcmp(name, "cruise-alt"))
 431     cruiseAlt = atoi(value.c_str());
 432   else if (!strcmp(name, "arrival"))
 433     {
 434       arrivalPort = port;
 435       arrivalTime = timeString;
 436     }
 437   else if (!strcmp(name, "repeat"))
 438     repeat = value;
 439   else if (!strcmp(name, "flight"))
 440     {
 441       // We have loaded and parsed all the information belonging to this flight
 442       // so we temporarily store it.
 443       //cerr << "Pusing back flight " << callsign << endl;
 444       //cerr << callsign  <<  " " << fltrules     << " "<< departurePort << " " <<  arrivalPort << " "
 445       //   << cruiseAlt <<  " " << departureTime<< " "<< arrivalTime   << " " << repeat << endl;
 446
 447       //Prioritize aircraft
 448       string apt = fgGetString("/sim/presets/airport-id");
 449       //cerr << "Airport information: " << apt << " " << departurePort << " " << arrivalPort << endl;
 450       //if (departurePort == apt) score++;
 451       //flights.push_back(new FGScheduledFlight(callsign,
 452         //                                fltrules,
 453         //                                departurePort,
 454         //                                arrivalPort,
 455         //                                cruiseAlt,
 456         //                                departureTime,
 457         //                                arrivalTime,
 458         //                                repeat));
 459     if (requiredAircraft == "") {
 460         char buffer[16];
 461         snprintf(buffer, 16, "%d", acCounter);
 462         requiredAircraft = buffer;
 463     }
 464     SG_LOG(SG_GENERAL, SG_DEBUG, "Adding flight: " << callsign       << " "
 465                               << fltrules       << " "
 466                               <<  departurePort << " "
 467                               <<  arrivalPort   << " "
 468                               <<  cruiseAlt     << " "
 469                               <<  departureTime << " "
 470                               <<  arrivalTime   << " "
 471                               <<  repeat        << " "
 472                               <<  requiredAircraft);
 473
 474      flights[requiredAircraft].push_back(new FGScheduledFlight(callsign,
 475                                                                  fltrules,
 476                                                                  departurePort,
 477                                                                  arrivalPort,
 478                                                                  cruiseAlt,
 479                                                                  departureTime,
 480                                                                  arrivalTime,
 481                                                                  repeat,
 482                                                                  requiredAircraft));
 483       requiredAircraft = "";
 484   }
 485   else if (!strcmp(name, "aircraft"))
 486     {
 487       int proportion = (int) (fgGetDouble("/sim/traffic-manager/proportion") * 100);
 488       int randval = rand() & 100;
 489       if (randval < proportion) {
 490           //scheduledAircraft.push_back(new FGAISchedule(mdl,
 491         //                                     livery,
 492         //                                     registration,
 493         //                                     heavy,
 494         //                                     acType,
 495         //                                     airline,
 496         //                                     m_class,
 497         //                                     flighttype,
 498         //                                     radius,
 499         //                                     offset,
 500         //                                     score,
 501         //                                     flights));
 502     if (requiredAircraft == "") {
 503         char buffer[16];
 504         snprintf(buffer, 16, "%d", acCounter);
 505         requiredAircraft = buffer;
 506     }
 507     if (homePort == "") {
 508         homePort = departurePort;
 509     }
 510             scheduledAircraft.push_back(new FGAISchedule(mdl,
 511                                                          livery,
 512                                                          homePort,
 513                                                          registration,
 514                                                          requiredAircraft,
 515                                                          heavy,
 516                                                          acType,
 517                                                          airline,
 518                                                          m_class,
 519                                                          flighttype,
 520                                                          radius,
 521                                                          offset));
 522
 523      //  while(flights.begin() != flights.end()) {
 524 //      flights.pop_back();
 525 //       }
 526         }
 527     acCounter++;
 528     requiredAircraft = "";
 529     homePort = "";
 530   //for (FGScheduledFlightVecIterator flt = flights.begin(); flt != flights.end(); flt++)
 531   //  {
 532   //    delete (*flt);
 533   //  }
 534   //flights.clear();
 535       SG_LOG( SG_GENERAL, SG_BULK, "Reading aircraft : "
 536               << registration
 537               << " with prioritization score "
 538               << score);
 539       score = 0;
 540     }
 541   elementValueStack.pop_back();
 542 }
 543
 544 void  FGTrafficManager::data (const char * s, int len) {
 545   string token = string(s,len);
 546   //cout << "Character data " << string(s,len) << endl;
 547   elementValueStack.back() += token;
 548 }
 549
 550 void  FGTrafficManager::pi (const char * target, const char * data) {
 551   //cout << "Processing instruction " << target << ' ' << data << endl;
 552 }
 553
 554 void  FGTrafficManager::warning (const char * message, int line, int column) {
 555   SG_LOG(SG_IO, SG_WARN, "Warning: " << message << " (" << line << ',' << column << ')');
 556 }
 557
 558 void  FGTrafficManager::error (const char * message, int line, int column) {
 559   SG_LOG(SG_IO, SG_ALERT, "Error: " << message << " (" << line << ',' << column << ')');
 560 }
 561