check for dt <= 0 aka paused sim

diff --git a/src/Environment/ridge_lift.cxx b/src/Environment/ridge_lift.cxx
index 8289953b7025c3623192167d089f77c18208e0c8..17f76e37718ac75fc10f84e94f55abb577fac72b 100644 (file)
--- a/src/Environment/ridge_lift.cxx
+++ b/src/Environment/ridge_lift.cxx
@@ -142,6 +142,9 @@ void FGRidgeLift::unbind() {
 
 void FGRidgeLift::update(double dt) {
 
+       if( dt <= 0 ) // paused, do nothing but keep current lift
+               return;
+
        if( _enabled_node && false == _enabled_node->getBoolValue() ) {
                if( strength != 0.0 ) {
                        strength = 0.0;