Potential fix for bug #471 (crash in checkspeedadjustment).

[flightgear.git] / src / Instrumentation / vertical_speed_indicator.cxx

diff --git a/src/Instrumentation/vertical_speed_indicator.cxx b/src/Instrumentation/vertical_speed_indicator.cxx
index 8a4318a9e6d0be435c45775947e40dfd02d048a2..1ad62253b61a29ffff7d6aec4b940ef5a6e44ffe 100644 (file)
--- a/src/Instrumentation/vertical_speed_indicator.cxx
+++ b/src/Instrumentation/vertical_speed_indicator.cxx
@@ -9,12 +9,13 @@
 #include <Main/fg_props.hxx>
 #include <Main/util.hxx>
 
+using std::string;
 
 VerticalSpeedIndicator::VerticalSpeedIndicator ( SGPropertyNode *node )
     : _internal_pressure_inhg(29.92),
       _name(node->getStringValue("name", "vertical-speed-indicator")),
       _num(node->getIntValue("number", 0)),
-      _static_pressure(node->getStringValue("static-pressure", "/Systems/static/pressure-inhg"))
+      _static_pressure(node->getStringValue("static-pressure", "/systems/static/pressure-inhg"))
 {
 }
 
@@ -32,6 +33,7 @@ VerticalSpeedIndicator::init ()
     _serviceable_node = node->getChild("serviceable", 0, true);
     _pressure_node = fgGetNode(_static_pressure.c_str(), true);
     _speed_node = node->getChild("indicated-speed-fpm", 0, true);
+    _speed_up_node = fgGetNode("/sim/speed-up", true);
 
                                 // Initialize at ambient pressure
     _internal_pressure_inhg = _pressure_node->getDoubleValue();
@@ -44,6 +46,9 @@ VerticalSpeedIndicator::update (double dt)
                                 // from 10000 to 10500 for manual factor
     if (_serviceable_node->getBoolValue()) {
         double pressure = _pressure_node->getDoubleValue();
+        double speed_up = _speed_up_node->getDoubleValue();
+        if( speed_up > 1 )
+            dt *= speed_up;
         _speed_node
             ->setDoubleValue((_internal_pressure_inhg - pressure) * 10500);
         _internal_pressure_inhg =