src/AIModel/performancedb.cxx

   1 #include <simgear/misc/sg_path.hxx>
   2 #include <simgear/props/props.hxx>
   3 #include <simgear/props/props_io.hxx>
   4 #include <simgear/xml/easyxml.hxx>
   5
   6 #include <Main/globals.hxx>
   7 #include <iostream>
   8 #include <fstream>
   9
  10 #include "performancedb.hxx"
  11
  12 using std::string;
  13 using std::cerr;
  14
  15 PerformanceDB::PerformanceDB()
  16 {
  17     SGPath dbpath( globals->get_fg_root() );
  18
  19
  20     dbpath.append( "/AI/Aircraft/" );
  21     dbpath.append( "performancedb.xml");
  22     load(dbpath);
  23 }
  24
  25
  26 PerformanceDB::~PerformanceDB()
  27 {}
  28
  29 void PerformanceDB::registerPerformanceData(const std::string& id, PerformanceData* data) {
  30     //TODO if key exists already replace data "inplace", i.e. copy to existing PerfData instance
  31     // this updates all aircraft currently using the PerfData instance.
  32     _db[id] = data;
  33 }
  34
  35 void PerformanceDB::registerPerformanceData(const std::string& id, const std::string& filename) {
  36     registerPerformanceData(id, new PerformanceData(filename));
  37 }
  38
  39 PerformanceData* PerformanceDB::getDataFor(const std::string& id) {
  40     if (_db.find(id) == _db.end()) // id not found -> return jet_transport data
  41         return _db["jet_transport"];
  42
  43     return _db[id];
  44 }
  45
  46 void PerformanceDB::load(SGPath filename) {
  47     string name;
  48     double acceleration;
  49     double deceleration;
  50     double climbRate;
  51     double descentRate;
  52     double vRotate;
  53     double vTakeOff;
  54     double vClimb;
  55     double vCruise;
  56     double vDescent;
  57     double vApproach;
  58     double vTouchdown;
  59     double vTaxi;
  60     SGPropertyNode root;
  61     try {
  62         readProperties(filename.str(), &root);
  63     } catch (const sg_exception &e) {
  64         SG_LOG(SG_GENERAL, SG_ALERT,
  65             "Error reading AI aircraft performance database: " << filename.str());
  66         return;
  67     }
  68
  69     SGPropertyNode * node = root.getNode("performancedb");
  70     for (int i = 0; i < node->nChildren(); i++) {
  71         SGPropertyNode * db_node = node->getChild(i);
  72             name         = db_node->getStringValue("type", "heavy_jet");
  73             acceleration = db_node->getDoubleValue("acceleration-kts-hour", 4.0);
  74             deceleration = db_node->getDoubleValue("deceleration-kts-hour", 2.0);
  75             climbRate    = db_node->getDoubleValue("climbrate-fpm", 3000.0);
  76             descentRate  = db_node->getDoubleValue("decentrate-fpm", 1500.0);
  77             vRotate      = db_node->getDoubleValue("rotate-speed-kts", 150.0);
  78             vTakeOff     = db_node->getDoubleValue("takeoff-speed-kts", 160.0);
  79             vClimb       = db_node->getDoubleValue("climb-speed-kts", 300.0);
  80             vCruise      = db_node->getDoubleValue("cruise-speed-kts", 430.0);
  81             vDescent     = db_node->getDoubleValue("decent-speed-kts", 300.0);
  82             vApproach    = db_node->getDoubleValue("approach-speed-kts", 170.0);
  83             vTouchdown   = db_node->getDoubleValue("touchdown-speed-kts", 150.0);
  84             vTaxi        = db_node->getDoubleValue("taxi-speed-kts", 15.0);
  85
  86             registerPerformanceData(name, new PerformanceData(
  87                 acceleration, deceleration, climbRate, descentRate, vRotate, vTakeOff, vClimb, vCruise, vDescent, vApproach, vTouchdown, vTaxi));
  88     }
  89 }
  90