emit signal /sim/signals/fdm-initialized when the FDM is up; this is

useful to attach listeners and have their functions run at a time when
they can safely access FDM generated properties

diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index ce6a79aed47f60bb488419d5cc74b83930b17cb9..03ba1711cc57daff5cfa8bbf94b433ee48acaa91 100644 (file)
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -156,6 +156,7 @@ void fgUpdateTimeDepCalcs() {
 
         if ( !inited ) {
             inited = true;
+            fgSetBool("/sim/signals/fdm-initialized", true);
         }
 
         if ( replay_state->getIntValue() == 0 ) {