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_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
  78   scenario_filename = root->getNode("scenario", true)->getStringValue();
  79   if (scenario_filename != "") processScenario( scenario_filename );
  80
  81   initDone = true;
  82 }
  83
  84
  85 void FGAIManager::bind() {
  86    root = globals->get_props()->getNode("ai/models", true);
  87    root->tie("count", SGRawValuePointer<int>(&numObjects[0]));
  88 }
  89
  90
  91 void FGAIManager::unbind() {
  92     root->untie("count");
  93 }
  94
  95
  96 void FGAIManager::update(double dt) {
  97
  98         // initialize these for finding nearest thermals
  99         range_nearest = 10000.0;
 100         strength = 0.0;
 101         FGTrafficManager *tmgr = (FGTrafficManager*) globals->get_subsystem("Traffic Manager");
 102
 103         if (!enabled)
 104             return;
 105
 106         _dt = dt;
 107
 108         ai_list_itr = ai_list.begin();
 109         while(ai_list_itr != ai_list.end()) {
 110                 if ((*ai_list_itr)->getDie()) {
 111                   tmgr->release((*ai_list_itr)->getID());
 112                    --numObjects[(*ai_list_itr)->getType()];
 113                    --numObjects[0];
 114                    (*ai_list_itr)->unbind();
 115                    delete (*ai_list_itr);
 116                    if ( ai_list_itr == ai_list.begin() ) {
 117                        ai_list.erase(ai_list_itr);
 118                        ai_list_itr = ai_list.begin();
 119                        continue;
 120                    } else {
 121                        ai_list.erase(ai_list_itr--);
 122                    }
 123                 } else {
 124                    fetchUserState();
 125                    if ((*ai_list_itr)->isa(FGAIBase::otThermal)) {
 126                        processThermal((FGAIThermal*)*ai_list_itr);
 127                    } else {
 128                       (*ai_list_itr)->update(_dt);
 129                    }
 130                 }
 131                 ++ai_list_itr;
 132         }
 133         wind_from_down_node->setDoubleValue( strength );
 134
 135 }
 136
 137
 138 void*
 139 FGAIManager::createAircraft( FGAIModelEntity *entity,   FGAISchedule *ref) {
 140
 141         FGAIAircraft* ai_plane = new FGAIAircraft(this, ref);
 142         ai_list.push_back(ai_plane);
 143         ++numObjects[0];
 144         ++numObjects[FGAIBase::otAircraft];
 145         if (entity->m_class == "light") {
 146           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::LIGHT]);
 147         } else if (entity->m_class == "ww2_fighter") {
 148           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::WW2_FIGHTER]);
 149         } else if (entity->m_class ==  "jet_transport") {
 150           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 151         } else if (entity->m_class == "jet_fighter") {
 152           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_FIGHTER]);
 153         } else if (entity->m_class ==  "tanker") {
 154           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 155           ai_plane->SetTanker(true);
 156         } else {
 157           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 158         }
 159         ai_plane->setHeading(entity->heading);
 160         ai_plane->setSpeed(entity->speed);
 161         ai_plane->setPath(entity->path.c_str());
 162         ai_plane->setAltitude(entity->altitude);
 163         ai_plane->setLongitude(entity->longitude);
 164         ai_plane->setLatitude(entity->latitude);
 165         ai_plane->setBank(entity->roll);
 166
 167         if ( entity->fp ) {
 168           ai_plane->SetFlightPlan(entity->fp);
 169         }
 170
 171         ai_plane->init();
 172         ai_plane->bind();
 173         return ai_plane;
 174 }
 175
 176 void*
 177 FGAIManager::createShip( FGAIModelEntity *entity ) {
 178
 179      //cout << "creating ship" << endl;
 180
 181         FGAIShip* ai_ship = new FGAIShip(this);
 182         ai_list.push_back(ai_ship);
 183         ++numObjects[0];
 184         ++numObjects[FGAIBase::otShip];
 185         ai_ship->setHeading(entity->heading);
 186         ai_ship->setSpeed(entity->speed);
 187         ai_ship->setPath(entity->path.c_str());
 188         ai_ship->setAltitude(entity->altitude);
 189         ai_ship->setLongitude(entity->longitude);
 190         ai_ship->setLatitude(entity->latitude);
 191         ai_ship->setBank(entity->rudder);
 192
 193         if ( entity->fp ) {
 194            ai_ship->setFlightPlan(entity->fp);
 195         }
 196
 197         ai_ship->init();
 198         ai_ship->bind();
 199         return ai_ship;
 200 }
 201
 202 void*
 203 FGAIManager::createCarrier( FGAIModelEntity *entity ) {
 204
 205     //cout << "creating carrier" << endl;
 206
 207         FGAICarrier* ai_carrier = new FGAICarrier(this);
 208         ai_list.push_back(ai_carrier);
 209         ++numObjects[0];
 210         ++numObjects[FGAIBase::otShip];
 211         ai_carrier->setHeading(entity->heading);
 212         ai_carrier->setSpeed(entity->speed);
 213         ai_carrier->setPath(entity->path.c_str());
 214         ai_carrier->setAltitude(entity->altitude);
 215         ai_carrier->setLongitude(entity->longitude);
 216         ai_carrier->setLatitude(entity->latitude);
 217         ai_carrier->setBank(entity->rudder);
 218         ai_carrier->setSolidObjects(entity->solid_objects);
 219         ai_carrier->setWireObjects(entity->wire_objects);
 220         ai_carrier->setCatapultObjects(entity->catapult_objects);
 221         ai_carrier->setRadius(entity->radius);
 222
 223         if ( entity->fp ) {
 224            ai_carrier->setFlightPlan(entity->fp);
 225         }
 226
 227         ai_carrier->init();
 228         ai_carrier->bind();
 229         return ai_carrier;
 230 }
 231
 232 void*
 233 FGAIManager::createBallistic( FGAIModelEntity *entity ) {
 234
 235         FGAIBallistic* ai_ballistic = new FGAIBallistic(this);
 236         ai_list.push_back(ai_ballistic);
 237         ++numObjects[0];
 238         ++numObjects[FGAIBase::otBallistic];
 239         ai_ballistic->setAzimuth(entity->azimuth);
 240         ai_ballistic->setElevation(entity->elevation);
 241         ai_ballistic->setSpeed(entity->speed);
 242         ai_ballistic->setPath(entity->path.c_str());
 243         ai_ballistic->setAltitude(entity->altitude);
 244         ai_ballistic->setLongitude(entity->longitude);
 245         ai_ballistic->setLatitude(entity->latitude);
 246         ai_ballistic->setDragArea(entity->eda);
 247         ai_ballistic->setLife(entity->life);
 248         ai_ballistic->setBuoyancy(entity->buoyancy);
 249         ai_ballistic->setWind_from_east(entity->wind_from_east);
 250         ai_ballistic->setWind_from_north(entity->wind_from_north);
 251         ai_ballistic->setWind(entity->wind);
 252         ai_ballistic->setRoll(entity->roll);
 253         ai_ballistic->setCd(entity->cd);
 254         ai_ballistic->setMass(entity->mass);
 255         ai_ballistic->setStabilisation(entity->aero_stabilised);
 256         ai_ballistic->init();
 257         ai_ballistic->bind();
 258         return ai_ballistic;
 259 }
 260
 261 void*
 262 FGAIManager::createStorm( FGAIModelEntity *entity ) {
 263
 264         FGAIStorm* ai_storm = new FGAIStorm(this);
 265         ++numObjects[0];
 266         ++numObjects[FGAIBase::otStorm];
 267         ai_storm->setHeading(entity->heading);
 268         ai_storm->setSpeed(entity->speed);
 269         ai_storm->setPath(entity->path.c_str());
 270         ai_storm->setAltitude(entity->altitude);
 271         ai_storm->setLongitude(entity->longitude);
 272         ai_storm->setLatitude(entity->latitude);
 273         ai_storm->init();
 274         ai_storm->bind();
 275         ai_list.push_back(ai_storm);
 276         return ai_storm;
 277 }
 278
 279 void*
 280 FGAIManager::createThermal( FGAIModelEntity *entity ) {
 281
 282         FGAIThermal* ai_thermal = new FGAIThermal(this);
 283         ++numObjects[0];
 284         ++numObjects[FGAIBase::otThermal];
 285         ai_thermal->setLongitude(entity->longitude);
 286         ai_thermal->setLatitude(entity->latitude);
 287         ai_thermal->setMaxStrength(entity->strength);
 288         ai_thermal->setDiameter(entity->diameter / 6076.11549);
 289         ai_thermal->init();
 290         ai_thermal->bind();
 291         ai_list.push_back(ai_thermal);
 292         return ai_thermal;
 293 }
 294
 295 void FGAIManager::destroyObject( void* ID ) {
 296         ai_list_itr = ai_list.begin();
 297         while(ai_list_itr != ai_list.end()) {
 298             if ((*ai_list_itr)->getID() == ID) {
 299               --numObjects[0];
 300               --numObjects[(*ai_list_itr)->getType()];
 301               (*ai_list_itr)->unbind();
 302               delete (*ai_list_itr);
 303               ai_list.erase(ai_list_itr);
 304
 305               break;
 306             }
 307             ++ai_list_itr;
 308         }
 309 }
 310
 311 // fetch the user's state every 10 sim cycles
 312 void FGAIManager::fetchUserState( void ) {
 313    ++dt_count;
 314    if (dt_count == 10) {
 315      user_latitude  = fgGetDouble("/position/latitude-deg");
 316      user_longitude = fgGetDouble("/position/longitude-deg");
 317      user_altitude  = fgGetDouble("/position/altitude-ft");
 318      user_heading   = fgGetDouble("/orientation/heading-deg");
 319      user_pitch     = fgGetDouble("/orientation/pitch-deg");
 320      user_yaw       = fgGetDouble("/orientation/side-slip-deg");
 321      user_speed     = fgGetDouble("/velocities/uBody-fps") * 0.592484;
 322      dt_count = 0;
 323    }
 324 }
 325
 326
 327 // only keep the results from the nearest thermal
 328 void FGAIManager::processThermal( FGAIThermal* thermal ) {
 329   thermal->update(_dt);
 330   if ( thermal->_getRange() < range_nearest ) {
 331      range_nearest = thermal->_getRange();
 332      strength = thermal->getStrength();
 333   }
 334 }
 335
 336
 337 void FGAIManager::processScenario( string &filename ) {
 338   FGAIScenario* s = new FGAIScenario( filename );
 339   for (int i=0;i<s->nEntries();i++) {
 340     FGAIModelEntity* en = s->getNextEntry();
 341
 342     if (en) {
 343       if ( en->m_type == "aircraft") {
 344         createAircraft( en );
 345
 346       } else if ( en->m_type == "ship") {
 347         createShip( en );
 348
 349       } else if ( en->m_type == "carrier") {
 350         createCarrier( en );
 351
 352       } else if ( en->m_type == "thunderstorm") {
 353         createStorm( en );
 354
 355       } else if ( en->m_type == "thermal") {
 356         createThermal( en );
 357
 358       } else if ( en->m_type == "ballistic") {
 359         createBallistic( en );
 360       }
 361     }
 362   }
 363
 364   delete s;
 365 }
 366
 367 // This code keeps track of models that have already been loaded
 368 // Eventually we'd prbably need to find a way to keep track of models
 369 // that are unloaded again
 370 ssgBranch * FGAIManager::getModel(const string& path)
 371 {
 372   ModelVecIterator i = loadedModels.begin();
 373   while (i != loadedModels.end())
 374     {
 375       if (i->getPath() == path)
 376         return i->getModelId();
 377       i++;
 378     }
 379   return 0;
 380 }
 381
 382 void FGAIManager::setModel(const string& path, ssgBranch *model)
 383 {
 384   loadedModels.push_back(FGModelID(path,model));
 385 }
 386
 387
 388 //end AIManager.cxx