//
// This file is in the Public Domain and comes with no warranty.
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include "vacuum.hxx"
#include <Main/fg_props.hxx>
VacuumSystem::VacuumSystem ( SGPropertyNode *node )
:
- name("vacuum"),
- num(0),
- rpm("/engines/engine[0]/rpm"),
- scale(1.0)
-
+ _name(node->getStringValue("name", "vacuum")),
+ _num(node->getIntValue("number", 0)),
+ _scale(node->getDoubleValue("scale", 1.0))
{
- int i;
- for ( i = 0; i < node->nChildren(); ++i ) {
+ for ( int i = 0; i < node->nChildren(); ++i ) {
SGPropertyNode *child = node->getChild(i);
- string cname = child->getName();
- string cval = child->getStringValue();
- if ( cname == "name" ) {
- name = cval;
- } else if ( cname == "number" ) {
- num = child->getIntValue();
- } else if ( cname == "rpm" ) {
- rpm = cval;
- } else if ( cname == "scale" ) {
- scale = child->getDoubleValue();
- } else {
- SG_LOG( SG_AUTOPILOT, SG_WARN, "Error in vacuum config logic" );
- if ( name.length() ) {
- SG_LOG( SG_AUTOPILOT, SG_WARN, "Section = " << name );
- }
- }
+ if (!strcmp(child->getName(), "rpm"))
+ _rpms.push_back(child->getStringValue());
}
}
-VacuumSystem::VacuumSystem( int i )
-{
- name = "vacuum";
- num = i;
- rpm = "/engines/engine[0]/rpm";
- scale = 1.0;
-}
-
VacuumSystem::~VacuumSystem ()
{
}
void
VacuumSystem::init()
{
+ unsigned int i;
string branch;
- branch = "/systems/" + name;
+ branch = "/systems/" + _name;
- SGPropertyNode *node = fgGetNode(branch.c_str(), num, true );
+ SGPropertyNode *node = fgGetNode(branch.c_str(), _num, true );
_serviceable_node = node->getChild("serviceable", 0, true);
- _rpm_node = fgGetNode(rpm.c_str(), true);
+ for ( i = 0; i < _rpms.size(); i++ ) {
+ SGPropertyNode_ptr _rpm_node = fgGetNode(_rpms[i].c_str(), true);
+ _rpm_nodes.push_back( _rpm_node );
+ }
_pressure_node = fgGetNode("/environment/pressure-inhg", true);
_suction_node = node->getChild("suction-inhg", 0, true);
-
- _serviceable_node->setBoolValue(true);
}
void
// Model taken from steam.cxx
double suction;
+ unsigned int i;
if (!_serviceable_node->getBoolValue()) {
suction = 0.0;
} else {
- double rpm = _rpm_node->getDoubleValue() * scale;
+ // select the source with the max rpm
+ double rpm = 0.0;
+ for ( i = 0; i < _rpm_nodes.size(); i++ ) {
+ double tmp = _rpm_nodes[i]->getDoubleValue() * _scale;
+ if ( tmp > rpm ) {
+ rpm = tmp;
+ }
+ }
double pressure = _pressure_node->getDoubleValue();
// This magic formula yields about 4 inhg at 700 rpm
suction = pressure * rpm / (rpm + 4875.0);