1 // AIManager.cxx Based on David Luff's AIMgr:
2 // - a global management type for AI objects
4 // Written by David Culp, started October 2003.
5 // - davidculp2@comcast.net
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 #include <Main/globals.hxx>
23 #include <Airports/simple.hxx>
24 #include <Traffic/TrafficMgr.hxx>
26 #include "AIManager.hxx"
27 #include "AIAircraft.hxx"
29 #include "AIBallistic.hxx"
30 #include "AIStorm.hxx"
31 #include "AIThermal.hxx"
32 #include "AICarrier.hxx"
33 #include "AIStatic.hxx"
34 #include "AIMultiplayer.hxx"
36 FGAIManager::FGAIManager() {
39 for (unsigned i = 0; i < FGAIBase::MAX_OBJECTS; ++i)
40 mNumAiTypeModels[i] = 0;
43 FGAIManager::~FGAIManager() {
44 ai_list_iterator ai_list_itr = ai_list.begin();
45 while(ai_list_itr != ai_list.end()) {
46 (*ai_list_itr)->unbind();
52 void FGAIManager::init() {
53 root = fgGetNode("sim/ai", true);
55 enabled = root->getNode("enabled", true)->getBoolValue();
59 wind_from_down_node = fgGetNode("/environment/wind-from-down-fps", true);
60 wind_from_east_node = fgGetNode("/environment/wind-from-east-fps",true);
61 wind_from_north_node = fgGetNode("/environment/wind-from-north-fps",true);
63 user_latitude_node = fgGetNode("/position/latitude-deg", true);
64 user_longitude_node = fgGetNode("/position/longitude-deg", true);
65 user_altitude_node = fgGetNode("/position/altitude-ft", true);
66 user_heading_node = fgGetNode("/orientation/heading-deg", true);
67 user_pitch_node = fgGetNode("/orientation/pitch-deg", true);
68 user_yaw_node = fgGetNode("/orientation/side-slip-deg", true);
69 user_speed_node = fgGetNode("/velocities/uBody-fps", true);
72 /// Move that into the constructor
73 for(int i = 0 ; i < root->nChildren() ; i++) {
74 SGPropertyNode *aiEntry = root->getChild( i );
75 if( !strcmp( aiEntry->getName(), "scenario" ) ) {
76 scenario_filename = aiEntry->getStringValue();
77 if (!scenario_filename.empty())
78 processScenario( scenario_filename );
84 void FGAIManager::reinit() {
86 ai_list_iterator ai_list_itr = ai_list.begin();
88 while(ai_list_itr != ai_list.end()) {
89 (*ai_list_itr)->reinit();
95 void FGAIManager::bind() {
96 root = globals->get_props()->getNode("ai/models", true);
97 root->tie("count", SGRawValueMethods<FGAIManager, int>(*this,
98 &FGAIManager::getNumAiObjects));
102 void FGAIManager::unbind() {
103 root->untie("count");
107 void FGAIManager::update(double dt) {
108 // initialize these for finding nearest thermals
109 range_nearest = 10000.0;
114 FGTrafficManager *tmgr = (FGTrafficManager*) globals->get_subsystem("Traffic Manager");
117 ai_list_iterator ai_list_itr = ai_list.begin();
118 while(ai_list_itr != ai_list.end()) {
119 if ((*ai_list_itr)->getDie()) {
120 tmgr->release((*ai_list_itr)->getID());
122 --(mNumAiTypeModels[(*ai_list_itr)->getType()]);
123 (*ai_list_itr)->unbind();
124 ai_list_itr = ai_list.erase(ai_list_itr);
127 if ((*ai_list_itr)->isa(FGAIBase::otThermal)) {
128 FGAIBase *base = *ai_list_itr;
129 processThermal((FGAIThermal*)base);
131 (*ai_list_itr)->update(_dt);
136 wind_from_down_node->setDoubleValue( strength ); // for thermals
140 FGAIManager::attach(SGSharedPtr<FGAIBase> model)
142 unsigned idx = mNumAiTypeModels[model->getType()];
143 const char* typeString = model->getTypeString();
144 SGPropertyNode* root = globals->get_props()->getNode("ai/models", true);
147 for (i=0;i<10000;i++) //find free index in the property tree, if we have
148 //more than 10000 mp-aircrafts in the property tree we should optimize the mp-server
150 p = root->getNode(typeString, i, false);
152 if (p->getIntValue("id",-1)==model->getID())
154 p->setStringValue("callsign","***invalid node***"); //debug only, should never set!
158 p = root->getNode(typeString, i, true);
159 model->setManager(this, p);
160 ai_list.push_back(model);
162 ++(mNumAiTypeModels[model->getType()]);
163 model->init(model->getType()==FGAIBase::otAircraft
164 || model->getType()==FGAIBase::otMultiplayer
165 || model->getType()==FGAIBase::otStatic);
170 void FGAIManager::destroyObject( int ID ) {
171 ai_list_iterator ai_list_itr = ai_list.begin();
172 while(ai_list_itr != ai_list.end()) {
173 if ((*ai_list_itr)->getID() == ID) {
175 --(mNumAiTypeModels[(*ai_list_itr)->getType()]);
176 (*ai_list_itr)->unbind();
177 ai_list_itr = ai_list.erase(ai_list_itr);
184 FGAIManager::getNumAiObjects(void) const
189 void FGAIManager::fetchUserState( void ) {
190 user_latitude = user_latitude_node->getDoubleValue();
191 user_longitude = user_longitude_node->getDoubleValue();
192 user_altitude = user_altitude_node->getDoubleValue();
193 user_heading = user_heading_node->getDoubleValue();
194 user_pitch = user_pitch_node->getDoubleValue();
195 user_yaw = user_yaw_node->getDoubleValue();
196 user_speed = user_speed_node->getDoubleValue() * 0.592484;
197 wind_from_east = wind_from_east_node->getDoubleValue();
198 wind_from_north = wind_from_north_node->getDoubleValue();
202 // only keep the results from the nearest thermal
203 void FGAIManager::processThermal( FGAIThermal* thermal ) {
204 thermal->update(_dt);
205 if ( thermal->_getRange() < range_nearest ) {
206 range_nearest = thermal->_getRange();
207 strength = thermal->getStrength();
212 void FGAIManager::processScenario( const string &filename ) {
214 SGPropertyNode_ptr scenarioTop = loadScenarioFile(filename);
217 SGPropertyNode* scenarios = scenarioTop->getChild("scenario");
221 for (int i = 0; i < scenarios->nChildren(); i++) {
222 SGPropertyNode* scEntry = scenarios->getChild(i);
223 std::string type = scEntry->getStringValue("type", "aircraft");
225 if (type == "aircraft") {
226 FGAIAircraft* aircraft = new FGAIAircraft;
227 aircraft->readFromScenario(scEntry);
230 } else if (type == "ship") {
231 FGAIShip* ship = new FGAIShip;
232 ship->readFromScenario(scEntry);
235 } else if (type == "carrier") {
236 FGAICarrier* carrier = new FGAICarrier;
237 carrier->readFromScenario(scEntry);
240 } else if (type == "thunderstorm") {
241 FGAIStorm* storm = new FGAIStorm;
242 storm->readFromScenario(scEntry);
245 } else if (type == "thermal") {
246 FGAIThermal* thermal = new FGAIThermal;
247 thermal->readFromScenario(scEntry);
250 } else if (type == "ballistic") {
251 FGAIBallistic* ballistic = new FGAIBallistic;
252 ballistic->readFromScenario(scEntry);
255 } else if (type == "static") {
256 FGAIStatic* aistatic = new FGAIStatic;
257 aistatic->readFromScenario(scEntry);
265 FGAIManager::loadScenarioFile(const std::string& filename)
267 SGPath path(globals->get_fg_root());
268 path.append("AI/" + filename + ".xml");
270 SGPropertyNode_ptr root = new SGPropertyNode;
271 readProperties(path.str(), root);
273 } catch (const sg_exception &e) {
274 SG_LOG(SG_GENERAL, SG_ALERT, "Incorrect path specified for AI "
275 "scenario: \"" << path.str() << "\"");
280 bool FGAIManager::getStartPosition(const string& id, const string& pid,
281 SGGeod& geodPos, double& hdng, SGVec3d& uvw)
284 SGPropertyNode* root = fgGetNode("sim/ai", true);
285 if (!root->getNode("enabled", true)->getBoolValue())
288 for(int i = 0 ; (!found) && i < root->nChildren() ; i++) {
289 SGPropertyNode *aiEntry = root->getChild( i );
290 if( !strcmp( aiEntry->getName(), "scenario" ) ) {
291 string filename = aiEntry->getStringValue();
292 SGPropertyNode_ptr scenarioTop = loadScenarioFile(filename);
294 SGPropertyNode* scenarios = scenarioTop->getChild("scenario");
296 for (int i = 0; i < scenarios->nChildren(); i++) {
297 SGPropertyNode* scEntry = scenarios->getChild(i);
298 std::string type = scEntry->getStringValue("type");
299 std::string pnumber = scEntry->getStringValue("pennant-number");
300 std::string name = scEntry->getStringValue("name");
301 if (type == "carrier" && (pnumber == id || name == id)) {
302 SGSharedPtr<FGAICarrier> carrier = new FGAICarrier;
303 carrier->readFromScenario(scEntry);
305 if (carrier->getParkPosition(pid, geodPos, hdng, uvw)) {