+void PerformanceDB::load(const SGPath& filename) {
+ string name;
+ double acceleration;
+ double deceleration;
+ double climbRate;
+ double descentRate;
+ double vRotate;
+ double vTakeOff;
+ double vClimb;
+ double vCruise;
+ double vDescent;
+ double vApproach;
+ double vTouchdown;
+ double vTaxi;
+ SGPropertyNode root;
+ try {
+ readProperties(filename.str(), &root);
+ } catch (const sg_exception &) {
+ SG_LOG(SG_AI, SG_ALERT,
+ "Error reading AI aircraft performance database: " << filename.str());
+ return;
+ }
+
+ SGPropertyNode * node = root.getNode("performancedb");
+ for (int i = 0; i < node->nChildren(); i++) {
+ SGPropertyNode * db_node = node->getChild(i);
+ if (!strcmp(db_node->getName(), "aircraft")) {
+ name = db_node->getStringValue("type", "heavy_jet");
+ acceleration = db_node->getDoubleValue("acceleration-kts-hour", 4.0);
+ deceleration = db_node->getDoubleValue("deceleration-kts-hour", 2.0);
+ climbRate = db_node->getDoubleValue("climbrate-fpm", 3000.0);
+ descentRate = db_node->getDoubleValue("decentrate-fpm", 1500.0);
+ vRotate = db_node->getDoubleValue("rotate-speed-kts", 150.0);
+ vTakeOff = db_node->getDoubleValue("takeoff-speed-kts", 160.0);
+ vClimb = db_node->getDoubleValue("climb-speed-kts", 300.0);
+ vCruise = db_node->getDoubleValue("cruise-speed-kts", 430.0);
+ vDescent = db_node->getDoubleValue("decent-speed-kts", 300.0);
+ vApproach = db_node->getDoubleValue("approach-speed-kts", 170.0);
+ vTouchdown = db_node->getDoubleValue("touchdown-speed-kts", 150.0);
+ vTaxi = db_node->getDoubleValue("taxi-speed-kts", 15.0);
+
+ registerPerformanceData(name, new PerformanceData(
+ acceleration, deceleration, climbRate, descentRate, vRotate, vTakeOff, vClimb, vCruise, vDescent, vApproach, vTouchdown, vTaxi));
+ } else if (!strcmp(db_node->getName(), "alias")) {
+ string alias(db_node->getStringValue("alias"));
+ if (alias.empty()) {
+ SG_LOG(SG_AI, SG_ALERT, "performance DB alias entry with no <alias> definition");
+ continue;
+ }
+
+ BOOST_FOREACH(SGPropertyNode* matchNode, db_node->getChildren("match")) {
+ string match(matchNode->getStringValue());
+ _aliases.push_back(StringPair(match, alias));
+ }
+ } else {
+ SG_LOG(SG_AI, SG_ALERT, "unrecognized performance DB entry:" << db_node->getName());
+ }
+ } // of nodes iteration