Method Load

src/models/FGPropulsion.cpp:352–464

//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

bool FGPropulsion::Load(Element* el)
{
  FGModelLoader ModelLoader(this);

  Debug(2);
  ReadingEngine = false;
  double FuelDensity = 6.0;

  Name = "Propulsion Model: " + el->GetAttributeValue("name");

  // Perform base class Pre-Load
  if (!FGModel::Upload(el, true))
    return false;

  // Process tank definitions first to establish the number of fuel tanks

  Element* tank_element = el->FindElement("tank");
  unsigned int numTanks = 0;

  while (tank_element) {
    Tanks.push_back(make_shared<FGTank>(FDMExec, tank_element, numTanks));
    const auto& tank = Tanks.back();
    if (tank->GetType() == FGTank::ttFUEL)
      FuelDensity = tank->GetDensity();
    else if (tank->GetType() != FGTank::ttOXIDIZER) {
      FGXMLLogging log(tank_element, LogLevel::ERROR);
      log << "Unknown tank type specified.\n";
      return false;
    }
    numTanks++;
    tank_element = el->FindNextElement("tank");
  }

  ReadingEngine = true;
  Element* engine_element = el->FindElement("engine");
  unsigned int numEngines = 0;

  while (engine_element) {
    if (!ModelLoader.Open(engine_element)) return false;

    try {
      // Locate the thruster definition
      Element* thruster_element = engine_element->FindElement("thruster");
      if (!thruster_element) {
        XMLLogException err(engine_element);
        err << "No thruster definition supplied with engine definition.";
        throw err;
      }
      if (!ModelLoader.Open(thruster_element)) {
        XMLLogException err(thruster_element);
        err << "Cannot open the thruster element.";
        throw err;
      }

      if (engine_element->FindElement("piston_engine")) {
        Element *element = engine_element->FindElement("piston_engine");
        Engines.push_back(make_shared<FGPiston>(FDMExec, element, numEngines, in));
      } else if (engine_element->FindElement("turbine_engine")) {