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