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 <list>
  26
  27 #include "AIManager.hxx"
  28 #include "AIAircraft.hxx"
  29 #include "AIShip.hxx"
  30 #include "AIBallistic.hxx"
  31 #include "AIStorm.hxx"
  32 #include "AIThermal.hxx"
  33 #include "AICarrier.hxx"
  34
  35 SG_USING_STD(list);
  36
  37
  38 FGAIManager::FGAIManager() {
  39   initDone = false;
  40   for (int i=0; i < FGAIBase::MAX_OBJECTS; i++)
  41      numObjects[i] = 0;
  42   _dt = 0.0;
  43   dt_count = 9;
  44   scenario_filename = "";
  45   ai_list.clear();
  46 }
  47
  48 FGAIManager::~FGAIManager() {
  49   ai_list_itr = ai_list.begin();
  50   while(ai_list_itr != ai_list.end()) {
  51       (*ai_list_itr)->unbind();
  52       delete (*ai_list_itr);
  53       ++ai_list_itr;
  54     }
  55   ai_list.clear();
  56 }
  57
  58
  59 void FGAIManager::init() {
  60   root = fgGetNode("sim/ai", true);
  61
  62   enabled = root->getNode("enabled", true)->getBoolValue();
  63   if (!enabled)
  64       return;
  65
  66   wind_from_down_node = fgGetNode("/environment/wind-from-down-fps", true);
  67
  68   scenario_filename = root->getNode("scenario", true)->getStringValue();
  69   if (scenario_filename != "") processScenario( scenario_filename );
  70
  71   initDone = true;
  72 }
  73
  74
  75 void FGAIManager::bind() {
  76    root = globals->get_props()->getNode("ai/models", true);
  77    root->tie("count", SGRawValuePointer<int>(&numObjects[0]));
  78 }
  79
  80
  81 void FGAIManager::unbind() {
  82     root->untie("count");
  83 }
  84
  85
  86 void FGAIManager::update(double dt) {
  87
  88         // initialize these for finding nearest thermals
  89         range_nearest = 10000.0;
  90         strength = 0.0;
  91
  92         if (!enabled)
  93             return;
  94
  95         _dt = dt;
  96
  97         ai_list_itr = ai_list.begin();
  98         while(ai_list_itr != ai_list.end()) {
  99                 if ((*ai_list_itr)->getDie()) {
 100                    --numObjects[(*ai_list_itr)->getType()];
 101                    --numObjects[0];
 102                    (*ai_list_itr)->unbind();
 103                    delete (*ai_list_itr);
 104                    if ( ai_list_itr == ai_list.begin() ) {
 105                        ai_list.erase(ai_list_itr);
 106                        ai_list_itr = ai_list.begin();
 107                        continue;
 108                    } else {
 109                        ai_list.erase(ai_list_itr--);
 110                    }
 111                 } else {
 112                    fetchUserState();
 113                    if ((*ai_list_itr)->isa(FGAIBase::otThermal)) {
 114                        processThermal((FGAIThermal*)*ai_list_itr);
 115                    } else {
 116                       (*ai_list_itr)->update(_dt);
 117                    }
 118                 }
 119                 ++ai_list_itr;
 120         }
 121         wind_from_down_node->setDoubleValue( strength );
 122
 123 }
 124
 125
 126 void*
 127 FGAIManager::createAircraft( FGAIModelEntity *entity ) {
 128
 129         FGAIAircraft* ai_plane = new FGAIAircraft(this);
 130         ai_list.push_back(ai_plane);
 131         ++numObjects[0];
 132         ++numObjects[FGAIBase::otAircraft];
 133         if (entity->m_class == "light") {
 134           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::LIGHT]);
 135         } else if (entity->m_class == "ww2_fighter") {
 136           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::WW2_FIGHTER]);
 137         } else if (entity->m_class ==  "jet_transport") {
 138           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 139         } else if (entity->m_class == "jet_fighter") {
 140           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_FIGHTER]);
 141         } else if (entity->m_class ==  "tanker") {
 142           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 143           ai_plane->SetTanker(true);
 144         } else {
 145           ai_plane->SetPerformance(&FGAIAircraft::settings[FGAIAircraft::JET_TRANSPORT]);
 146         }
 147         ai_plane->setHeading(entity->heading);
 148         ai_plane->setSpeed(entity->speed);
 149         ai_plane->setPath(entity->path.c_str());
 150         ai_plane->setAltitude(entity->altitude);
 151         ai_plane->setLongitude(entity->longitude);
 152         ai_plane->setLatitude(entity->latitude);
 153         ai_plane->setBank(entity->roll);
 154
 155         if ( entity->fp ) {
 156           ai_plane->SetFlightPlan(entity->fp);
 157         }
 158
 159         ai_plane->init();
 160         ai_plane->bind();
 161         return ai_plane;
 162 }
 163
 164 void*
 165 FGAIManager::createShip( FGAIModelEntity *entity ) {
 166
 167         FGAIShip* ai_ship = new FGAIShip(this);
 168         ai_list.push_back(ai_ship);
 169         ++numObjects[0];
 170         ++numObjects[FGAIBase::otShip];
 171         ai_ship->setHeading(entity->heading);
 172         ai_ship->setSpeed(entity->speed);
 173         ai_ship->setPath(entity->path.c_str());
 174         ai_ship->setAltitude(entity->altitude);
 175         ai_ship->setLongitude(entity->longitude);
 176         ai_ship->setLatitude(entity->latitude);
 177         ai_ship->setBank(entity->rudder);
 178
 179         if ( entity->fp ) {
 180            ai_ship->setFlightPlan(entity->fp);
 181         }
 182
 183         ai_ship->init();
 184         ai_ship->bind();
 185         return ai_ship;
 186 }
 187
 188 void*
 189 FGAIManager::createCarrier( FGAIModelEntity *entity ) {
 190
 191         FGAIShip* ai_carrier = new FGAICarrier(this);
 192         ai_list.push_back(ai_carrier);
 193         ++numObjects[0];
 194         ++numObjects[FGAIBase::otShip];
 195         ai_carrier->setHeading(entity->heading);
 196         ai_carrier->setSpeed(entity->speed);
 197         ai_carrier->setPath(entity->path.c_str());
 198         ai_carrier->setAltitude(entity->altitude);
 199         ai_carrier->setLongitude(entity->longitude);
 200         ai_carrier->setLatitude(entity->latitude);
 201         ai_carrier->setBank(entity->rudder);
 202
 203         if ( entity->fp ) {
 204            ai_carrier->setFlightPlan(entity->fp);
 205         }
 206
 207         ai_carrier->init();
 208         ai_carrier->bind();
 209         return ai_carrier;
 210 }
 211
 212 void*
 213 FGAIManager::createBallistic( FGAIModelEntity *entity ) {
 214
 215         FGAIBallistic* ai_ballistic = new FGAIBallistic(this);
 216         ai_list.push_back(ai_ballistic);
 217         ++numObjects[0];
 218         ++numObjects[FGAIBase::otBallistic];
 219         ai_ballistic->setAzimuth(entity->azimuth);
 220         ai_ballistic->setElevation(entity->elevation);
 221         ai_ballistic->setSpeed(entity->speed);
 222         ai_ballistic->setPath(entity->path.c_str());
 223         ai_ballistic->setAltitude(entity->altitude);
 224         ai_ballistic->setLongitude(entity->longitude);
 225         ai_ballistic->setLatitude(entity->latitude);
 226         ai_ballistic->setDragArea(entity->eda);
 227         ai_ballistic->setLife(entity->life);
 228         ai_ballistic->setBuoyancy(entity->buoyancy);
 229         ai_ballistic->setWind_from_east(entity->wind_from_east);
 230         ai_ballistic->setWind_from_north(entity->wind_from_north);
 231         ai_ballistic->setWind(entity->wind);
 232         ai_ballistic->setRoll(entity->roll);
 233         ai_ballistic->setCd(entity->cd);
 234         ai_ballistic->setMass(entity->mass);
 235         ai_ballistic->setStabilisation(entity->aero_stabilised);
 236         ai_ballistic->init();
 237         ai_ballistic->bind();
 238         return ai_ballistic;
 239 }
 240
 241 void*
 242 FGAIManager::createStorm( FGAIModelEntity *entity ) {
 243
 244         FGAIStorm* ai_storm = new FGAIStorm(this);
 245         ++numObjects[0];
 246         ++numObjects[FGAIBase::otStorm];
 247         ai_storm->setHeading(entity->heading);
 248         ai_storm->setSpeed(entity->speed);
 249         ai_storm->setPath(entity->path.c_str());
 250         ai_storm->setAltitude(entity->altitude);
 251         ai_storm->setLongitude(entity->longitude);
 252         ai_storm->setLatitude(entity->latitude);
 253         ai_storm->init();
 254         ai_storm->bind();
 255         ai_list.push_back(ai_storm);
 256         return ai_storm;
 257 }
 258
 259 void*
 260 FGAIManager::createThermal( FGAIModelEntity *entity ) {
 261
 262         FGAIThermal* ai_thermal = new FGAIThermal(this);
 263         ++numObjects[0];
 264         ++numObjects[FGAIBase::otThermal];
 265         ai_thermal->setLongitude(entity->longitude);
 266         ai_thermal->setLatitude(entity->latitude);
 267         ai_thermal->setMaxStrength(entity->strength);
 268         ai_thermal->setDiameter(entity->diameter / 6076.11549);
 269         ai_thermal->init();
 270         ai_thermal->bind();
 271         ai_list.push_back(ai_thermal);
 272         return ai_thermal;
 273 }
 274
 275 void FGAIManager::destroyObject( void* ID ) {
 276         ai_list_itr = ai_list.begin();
 277         while(ai_list_itr != ai_list.end()) {
 278             if ((*ai_list_itr)->getID() == ID) {
 279               --numObjects[0];
 280               --numObjects[(*ai_list_itr)->getType()];
 281               (*ai_list_itr)->unbind();
 282               delete (*ai_list_itr);
 283               ai_list.erase(ai_list_itr);
 284
 285               break;
 286             }
 287             ++ai_list_itr;
 288         }
 289 }
 290
 291 // fetch the user's state every 10 sim cycles
 292 void FGAIManager::fetchUserState( void ) {
 293    ++dt_count;
 294    if (dt_count == 10) {
 295      user_latitude  = fgGetDouble("/position/latitude-deg");
 296      user_longitude = fgGetDouble("/position/longitude-deg");
 297      user_altitude  = fgGetDouble("/position/altitude-ft");
 298      user_heading   = fgGetDouble("/orientation/heading-deg");
 299      user_pitch     = fgGetDouble("/orientation/pitch-deg");
 300      user_yaw       = fgGetDouble("/orientation/side-slip-deg");
 301      user_speed     = fgGetDouble("/velocities/uBody-fps") * 0.592484;
 302      dt_count = 0;
 303    }
 304 }
 305
 306
 307 // only keep the results from the nearest thermal
 308 void FGAIManager::processThermal( FGAIThermal* thermal ) {
 309   thermal->update(_dt);
 310   if ( thermal->_getRange() < range_nearest ) {
 311      range_nearest = thermal->_getRange();
 312      strength = thermal->getStrength();
 313   }
 314 }
 315
 316
 317 void FGAIManager::processScenario( string &filename ) {
 318   FGAIScenario* s = new FGAIScenario( filename );
 319   for (int i=0;i<s->nEntries();i++) {
 320     FGAIModelEntity* en = s->getNextEntry();
 321
 322     if (en) {
 323       if ( en->m_type == "aircraft") {
 324         createAircraft( en );
 325
 326       } else if ( en->m_type == "ship") {
 327         createShip( en );
 328
 329       } else if ( en->m_type == "carrier") {
 330         createCarrier( en );
 331
 332       } else if ( en->m_type == "thunderstorm") {
 333         createStorm( en );
 334
 335       } else if ( en->m_type == "thermal") {
 336         createThermal( en );
 337
 338       } else if ( en->m_type == "ballistic") {
 339         createBallistic( en );
 340       }
 341     }
 342   }
 343
 344   delete s;
 345 }
 346
 347 //end AIManager.cxx