From 06db85f42b85df32fe916fafa8eaad8badba1e6a Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Sun, 6 Oct 2013 17:33:09 +0100
Subject: [PATCH] Reset: given FGScenery a shutdown method.

Forces OSG branch references to be dropped.
---
 src/Scenery/scenery.cxx | 10 ++++++++++
 src/Scenery/scenery.hxx |  1 +
 2 files changed, 11 insertions(+)

diff --git a/src/Scenery/scenery.cxx b/src/Scenery/scenery.cxx
index d243a8ae4..47a08763e 100644
--- a/src/Scenery/scenery.cxx
+++ b/src/Scenery/scenery.cxx
@@ -269,6 +269,16 @@ void FGScenery::init() {
     sgUserDataInit( globals->get_props() );
 }
 
+void FGScenery::shutdown()
+{
+    sgUserDataInit( NULL );
+    
+    scene_graph = NULL;
+    terrain_branch = NULL;
+    models_branch = NULL;
+    aircraft_branch = NULL;
+}
+
 
 void FGScenery::update(double dt)
 {
diff --git a/src/Scenery/scenery.hxx b/src/Scenery/scenery.hxx
index cfa0f935a..e6a2d7051 100644
--- a/src/Scenery/scenery.hxx
+++ b/src/Scenery/scenery.hxx
@@ -61,6 +61,7 @@ public:
 
     // Implementation of SGSubsystem.
     void init ();
+    void shutdown ();
     void bind ();
     void unbind ();
     void update (double dt);
-- 
2.39.5