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