From 5d8e5f29e0fe880ddb94856460e1553869c6a576 Mon Sep 17 00:00:00 2001
From: mfranz <mfranz>
Date: Sat, 3 Nov 2007 21:02:28 +0000
Subject: [PATCH] Csaba HALASZ: fix IVSI instrument problem

"I have been investigating the Concorde IVSI problem. I came to the
conclusion that the trouble is that the environment altitude and thus
the pressure (which is calculated from that) is lagging by 1 frame.
Normally that wouldn't be a problem, but the IVSI calculates rate of
change and it will use the new dt with the old value difference,
thereby arriving at bad results if dt changes (and it does)."
---
 src/Main/fg_init.cxx | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/Main/fg_init.cxx b/src/Main/fg_init.cxx
index fc2fc7ec6..07effac56 100644
--- a/src/Main/fg_init.cxx
+++ b/src/Main/fg_init.cxx
@@ -1650,6 +1650,15 @@ bool fgInitSubsystems() {
     // model or control parameters are set
     fgAircraftInit();   // In the future this might not be the case.
 
+
+    ////////////////////////////////////////////////////////////////////
+    // Initialize the weather subsystem.
+    ////////////////////////////////////////////////////////////////////
+
+    // Initialize the weather modeling subsystem
+    globals->add_subsystem("environment", new FGEnvironmentMgr);
+
+
     ////////////////////////////////////////////////////////////////////
     // Initialize the aircraft systems and instrumentation (before the
     // autopilot.)
@@ -1695,14 +1704,6 @@ bool fgInitSubsystems() {
     fgInitTimeOffset();		// the environment subsystem needs this
 
 
-    ////////////////////////////////////////////////////////////////////
-    // Initialize the weather subsystem.
-    ////////////////////////////////////////////////////////////////////
-
-    // Initialize the weather modeling subsystem
-    globals->add_subsystem("environment", new FGEnvironmentMgr);
-
-
     ////////////////////////////////////////////////////////////////////
     // Initialize the lighting subsystem.
     ////////////////////////////////////////////////////////////////////
-- 
2.39.5