src/AIModel/AIManager.cxx

   1 // AIManager.cxx  Based on David Luff's AIMgr:
   2 // - a global management type for AI objects
   3 //
   4 // Written by David Culp, started October 2003.
   5 // - davidculp2@comcast.net
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License as
   9 // published by the Free Software Foundation; either version 2 of the
  10 // License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 // General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with this program; if not, write to the Free Software
  19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 #include <simgear/misc/sg_path.hxx>
  22 #include <Main/fg_props.hxx>
  23 #include <Main/globals.hxx>
  24
  25 #include <Airports/simple.hxx>
  26 #include <Traffic/SchedFlight.hxx>
  27 #include <Traffic/Schedule.hxx>
  28 #include <Traffic/TrafficMgr.hxx>
  29
  30 #include <list>
  31
  32 #include "AIManager.hxx"
  33 #include "AIAircraft.hxx"
  34 #include "AIShip.hxx"
  35 #include "AIBallistic.hxx"
  36 #include "AIStorm.hxx"
  37 #include "AIThermal.hxx"
  38 #include "AICarrier.hxx"
  39
  40 SG_USING_STD(list);
  41
  42
  43 FGAIManager::FGAIManager() {
  44   initDone = false;
  45   for (int i=0; i < FGAIBase::MAX_OBJECTS; i++)
  46      numObjects[i] = 0;
  47   _dt = 0.0;
  48   dt_count = 9;
  49   scenario_filename = "";
  50   ai_list.clear();
  51 }
  52
  53 FGAIManager::~FGAIManager() {
  54   ai_list_iterator ai_list_itr = ai_list.begin();
  55   while(ai_list_itr != ai_list.end()) {
  56       (*ai_list_itr)->unbind();
  57       delete (*ai_list_itr);
  58       ++ai_list_itr;
  59     }
  60   ai_list.clear();
  61   ModelVecIterator i = loadedModels.begin();
  62   while (i != loadedModels.end())
  63     {
  64       i->getModelId()->deRef();
  65     }
  66 }
  67
  68
  69 void FGAIManager::init() {
  70   root = fgGetNode("sim/ai", true);
  71
  72   enabled = root->getNode("enabled", true)->getBoolValue();
  73   if (!enabled)
  74       return;
  75
  76   wind_from_down_node = fgGetNode("/environment/wind-from-down-fps", true);
  77   user_latitude_node  = fgGetNode("/position/latitude-deg", true);
  78   user_longitude_node = fgGetNode("/position/longitude-deg", true);
  79   user_altitude_node  = fgGetNode("/position/altitude-ft", true);
  80   user_heading_node   = fgGetNode("/orientation/heading-deg", true);
  81   user_pitch_node     = fgGetNode("/orientation/pitch-deg", true);
  82   user_yaw_node       = fgGetNode("/orientation/side-slip-deg", true);
  83   user_speed_node     = fgGetNode("/velocities/uBody-fps", true);
  84
  85   scenario_filename = root->getNode("scenario", true)->getStringValue();
  86   if (scenario_filename != "") processScenario( scenario_filename );
  87
  88   initDone = true;
  89 }
  90
  91
  92 void FGAIManager::bind() {
  93    root = globals->get_props()->getNode("ai/models", true);
  94    root->tie("count", SGRawValuePointer<int>(&numObjects[0]));
  95 }
  96
  97
  98 void FGAIManager::unbind() {
  99     root->untie("count");
 100 }
 101
 102
 103 void FGAIManager::update(double dt) {
 104
 105         // initialize these for finding nearest thermals
 106         range_nearest = 10000.0;
 107         strength = 0.0;
 108         FGTrafficManager *tmgr = (FGTrafficManager*) globals->get_subsystem("Traffic Manager");
 109
 110         if (!enabled)
 111             return;
 112
 113         _dt = dt;
 114
 115         ai_list_iterator ai_list_itr = ai_list.begin();
 116         while(ai_list_itr != ai_list.end()) {
 117                 if ((*ai_list_itr)->getDie()) {
 118                   tmgr->release((*ai_list_itr)->getID());
 119                    --numObjects[(*ai_list_itr)->getType()];
 120                    --numObjects[0];
 121                    (*ai_list_itr)->unbind();
 122                    delete (*ai_list_itr);
 123                    if ( ai_list_itr == ai_list.begin() ) {
 124                        ai_list.erase(ai_list_itr);
 125                        ai_list_itr = ai_list.begin();
 126                        continue;
 127                    } else {
 128                        ai_list.erase(ai_list_itr--);
 129                    }
 130                 } else {
 131                    fetchUserState();
 132                    if ((*ai_list_itr)->isa(FGAIBase::otThermal)) {
 133                        processThermal((FGAIThermal*)*ai_list_itr);
 134                    } else {
 135                       (*ai_list_itr)->update(_dt);
 136                    }
 137                 }
 138                 ++ai_list_itr;
 139         }
 140         wind_from_down_node->setDoubleValue( strength ); // for thermals
 141
 142 }
 143
 144
 145 void*
 146 FGAIManager::createAircraft( FGAIModelEntity *entity,   FGAISchedule *ref) {
 147
 148         FGAIAircraft* ai_plane = new FGAIAircraft(this, ref);
 149         ai_list.push_back(ai_plane);
 150         ++numObjects[0];
 151         ++numObjects[FGAIBase::otAircraft];
 152         if (entity->m_class == "light") {
 153           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::LIGHT]);
 154         } else if (entity->m_class == "ww2_fighter") {
 155           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::WW2_FIGHTER]);
 156         } else if (entity->m_class ==  "jet_transport") {
 157           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 158         } else if (entity->m_class == "jet_fighter") {
 159           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_FIGHTER]);
 160         } else if (entity->m_class ==  "tanker") {
 161           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 162           ai_plane->SetTanker(true);
 163         } else {
 164           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 165         }
 166         ai_plane->setAcType(entity->acType);
 167         ai_plane->setCompany(entity->company);
 168         ai_plane->setHeading(entity->heading);
 169         ai_plane->setSpeed(entity->speed);
 170         ai_plane->setPath(entity->path.c_str());
 171         ai_plane->setAltitude(entity->altitude);
 172         ai_plane->setLongitude(entity->longitude);
 173         ai_plane->setLatitude(entity->latitude);
 174         ai_plane->setBank(entity->roll);
 175
 176         if ( entity->fp ) {
 177           ai_plane->SetFlightPlan(entity->fp);
 178         }
 179
 180         ai_plane->init();
 181         ai_plane->bind();
 182         return ai_plane;
 183 }
 184
 185 void*
 186 FGAIManager::createShip( FGAIModelEntity *entity ) {
 187
 188      // cout << "creating ship" << endl;
 189
 190         FGAIShip* ai_ship = new FGAIShip(this);
 191         ai_list.push_back(ai_ship);
 192         ++numObjects[0];
 193         ++numObjects[FGAIBase::otShip];
 194         ai_ship->setHeading(entity->heading);
 195         ai_ship->setSpeed(entity->speed);
 196         ai_ship->setPath(entity->path.c_str());
 197         ai_ship->setAltitude(entity->altitude);
 198         ai_ship->setLongitude(entity->longitude);
 199         ai_ship->setLatitude(entity->latitude);
 200         ai_ship->setBank(entity->rudder);
 201         ai_ship->setName(entity->name);
 202
 203         if ( entity->fp ) {
 204            ai_ship->setFlightPlan(entity->fp);
 205         }
 206
 207         ai_ship->init();
 208         ai_ship->bind();
 209         return ai_ship;
 210 }
 211
 212 void*
 213 FGAIManager::createCarrier( FGAIModelEntity *entity ) {
 214
 215     // cout << "creating carrier" << endl;
 216
 217         FGAICarrier* ai_carrier = new FGAICarrier(this);
 218         ai_list.push_back(ai_carrier);
 219         ++numObjects[0];
 220         ++numObjects[FGAIBase::otCarrier];
 221         ai_carrier->setHeading(entity->heading);
 222         ai_carrier->setSpeed(entity->speed);
 223         ai_carrier->setPath(entity->path.c_str());
 224         ai_carrier->setAltitude(entity->altitude);
 225         ai_carrier->setLongitude(entity->longitude);
 226         ai_carrier->setLatitude(entity->latitude);
 227         ai_carrier->setBank(entity->rudder);
 228         ai_carrier->setSolidObjects(entity->solid_objects);
 229         ai_carrier->setWireObjects(entity->wire_objects);
 230         ai_carrier->setCatapultObjects(entity->catapult_objects);
 231         ai_carrier->setParkingPositions(entity->ppositions);
 232         ai_carrier->setRadius(entity->radius);
 233         ai_carrier->setSign(entity->pennant_number);
 234         ai_carrier->setName(entity->name);
 235         ai_carrier->setFlolsOffset(entity->flols_offset);
 236
 237         if ( entity->fp ) {
 238            ai_carrier->setFlightPlan(entity->fp);
 239         }
 240
 241         ai_carrier->init();
 242         ai_carrier->bind();
 243         return ai_carrier;
 244 }
 245
 246 void*
 247 FGAIManager::createBallistic( FGAIModelEntity *entity ) {
 248
 249         FGAIBallistic* ai_ballistic = new FGAIBallistic(this);
 250         ai_list.push_back(ai_ballistic);
 251         ++numObjects[0];
 252         ++numObjects[FGAIBase::otBallistic];
 253         ai_ballistic->setAzimuth(entity->azimuth);
 254         ai_ballistic->setElevation(entity->elevation);
 255         ai_ballistic->setSpeed(entity->speed);
 256         ai_ballistic->setPath(entity->path.c_str());
 257         ai_ballistic->setAltitude(entity->altitude);
 258         ai_ballistic->setLongitude(entity->longitude);
 259         ai_ballistic->setLatitude(entity->latitude);
 260         ai_ballistic->setDragArea(entity->eda);
 261         ai_ballistic->setLife(entity->life);
 262         ai_ballistic->setBuoyancy(entity->buoyancy);
 263         ai_ballistic->setWind_from_east(entity->wind_from_east);
 264         ai_ballistic->setWind_from_north(entity->wind_from_north);
 265         ai_ballistic->setWind(entity->wind);
 266         ai_ballistic->setRoll(entity->roll);
 267         ai_ballistic->setCd(entity->cd);
 268         ai_ballistic->setMass(entity->mass);
 269         ai_ballistic->setStabilisation(entity->aero_stabilised);
 270         ai_ballistic->init();
 271         ai_ballistic->bind();
 272         return ai_ballistic;
 273 }
 274
 275 void*
 276 FGAIManager::createStorm( FGAIModelEntity *entity ) {
 277
 278         FGAIStorm* ai_storm = new FGAIStorm(this);
 279         ++numObjects[0];
 280         ++numObjects[FGAIBase::otStorm];
 281         ai_storm->setHeading(entity->heading);
 282         ai_storm->setSpeed(entity->speed);
 283         ai_storm->setPath(entity->path.c_str());
 284         ai_storm->setAltitude(entity->altitude);
 285         ai_storm->setDiameter(entity->diameter / 6076.11549);
 286         ai_storm->setHeight(entity->height_msl);
 287         ai_storm->setStrengthNorm(entity->strength);
 288         ai_storm->setLongitude(entity->longitude);
 289         ai_storm->setLatitude(entity->latitude);
 290         ai_storm->init();
 291         ai_storm->bind();
 292         ai_list.push_back(ai_storm);
 293         return ai_storm;
 294 }
 295
 296 void*
 297 FGAIManager::createThermal( FGAIModelEntity *entity ) {
 298
 299         FGAIThermal* ai_thermal = new FGAIThermal(this);
 300         ++numObjects[0];
 301         ++numObjects[FGAIBase::otThermal];
 302         ai_thermal->setLongitude(entity->longitude);
 303         ai_thermal->setLatitude(entity->latitude);
 304         ai_thermal->setMaxStrength(entity->strength);
 305         ai_thermal->setDiameter(entity->diameter / 6076.11549);
 306         ai_thermal->setHeight(entity->height_msl);
 307         ai_thermal->init();
 308         ai_thermal->bind();
 309         ai_list.push_back(ai_thermal);
 310         return ai_thermal;
 311 }
 312
 313 void FGAIManager::destroyObject( void* ID ) {
 314         ai_list_iterator ai_list_itr = ai_list.begin();
 315         while(ai_list_itr != ai_list.end()) {
 316             if ((*ai_list_itr)->getID() == ID) {
 317               --numObjects[0];
 318               --numObjects[(*ai_list_itr)->getType()];
 319               (*ai_list_itr)->unbind();
 320               delete (*ai_list_itr);
 321               ai_list.erase(ai_list_itr);
 322
 323               break;
 324             }
 325             ++ai_list_itr;
 326         }
 327 }
 328
 329
 330 void FGAIManager::fetchUserState( void ) {
 331      user_latitude  = user_latitude_node->getDoubleValue();
 332      user_longitude = user_longitude_node->getDoubleValue();
 333      user_altitude  = user_altitude_node->getDoubleValue();
 334      user_heading   = user_heading_node->getDoubleValue();
 335      user_pitch     = user_pitch_node->getDoubleValue();
 336      user_yaw       = user_yaw_node->getDoubleValue();
 337      user_speed     = user_speed_node->getDoubleValue() * 0.592484;
 338 }
 339
 340
 341 // only keep the results from the nearest thermal
 342 void FGAIManager::processThermal( FGAIThermal* thermal ) {
 343   thermal->update(_dt);
 344   if ( thermal->_getRange() < range_nearest ) {
 345      range_nearest = thermal->_getRange();
 346      strength = thermal->getStrength();
 347   }
 348 }
 349
 350
 351 void FGAIManager::processScenario( string &filename ) {
 352   FGAIScenario* s = new FGAIScenario( filename );
 353   for (int i=0;i<s->nEntries();i++) {
 354     FGAIModelEntity* en = s->getNextEntry();
 355
 356     if (en) {
 357       if ( en->m_type == "aircraft") {
 358         createAircraft( en );
 359
 360       } else if ( en->m_type == "ship") {
 361         createShip( en );
 362
 363       } else if ( en->m_type == "carrier") {
 364         createCarrier( en );
 365
 366       } else if ( en->m_type == "thunderstorm") {
 367         createStorm( en );
 368
 369       } else if ( en->m_type == "thermal") {
 370         createThermal( en );
 371
 372       } else if ( en->m_type == "ballistic") {
 373         createBallistic( en );
 374       }
 375     }
 376   }
 377
 378   delete s;
 379 }
 380
 381 // This code keeps track of models that have already been loaded
 382 // Eventually we'd prbably need to find a way to keep track of models
 383 // that are unloaded again
 384 ssgBranch * FGAIManager::getModel(const string& path)
 385 {
 386   ModelVecIterator i = loadedModels.begin();
 387   while (i != loadedModels.end())
 388     {
 389       if (i->getPath() == path)
 390         return i->getModelId();
 391       i++;
 392     }
 393   return 0;
 394 }
 395
 396 void FGAIManager::setModel(const string& path, ssgBranch *model)
 397 {
 398   loadedModels.push_back(FGModelID(path,model));
 399 }
 400
 401
 402 //end AIManager.cxx