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