#393: Vertical speed indicator affected by sim speed up

VSI showed incorrect values with sim speed-up factors != 1.
Time dt must be corrected by sim speed up factor.

diff --git a/src/Instrumentation/vertical_speed_indicator.cxx b/src/Instrumentation/vertical_speed_indicator.cxx
index e5c9f743274e9671c0674ab52ce3a3d3de218930..e062db010087e8f3a646a5282c750a99d0999967 100644 (file)
--- a/src/Instrumentation/vertical_speed_indicator.cxx
+++ b/src/Instrumentation/vertical_speed_indicator.cxx
@@ -32,6 +32,7 @@ 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 +45,9 @@ 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 =

diff --git a/src/Instrumentation/vertical_speed_indicator.hxx b/src/Instrumentation/vertical_speed_indicator.hxx
index 2b6a930d432a9c2dd285ac04f191e34bcd548024..d40aa5693c7f6ede52ae2ce8a101a07d3c8e6872 100644 (file)
--- a/src/Instrumentation/vertical_speed_indicator.hxx
+++ b/src/Instrumentation/vertical_speed_indicator.hxx
@@ -49,6 +49,7 @@ private:
     SGPropertyNode_ptr _serviceable_node;
     SGPropertyNode_ptr _pressure_node;
     SGPropertyNode_ptr _speed_node;
+    SGPropertyNode_ptr _speed_up_node;
     
 };