X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Fglobals.cxx;h=9de7fdb4382d6f8c8b878aa3d1032273eddc3e67;hb=4141c6f8bb42b3491502f5e6b82595367da9fb69;hp=e1536925a344dab7cea2b9d4a4c88b945c2780fb;hpb=6654ae5f491ae65668b0dc7e2330c02d08d8df04;p=flightgear.git

diff --git a/src/Main/globals.cxx b/src/Main/globals.cxx
index e1536925a..9de7fdb43 100644
--- a/src/Main/globals.cxx
+++ b/src/Main/globals.cxx
@@ -22,8 +22,14 @@
 
 
 #include "globals.hxx"
+#include "fg_props.hxx"
 
 
+
+////////////////////////////////////////////////////////////////////////
+// Implementation of FGGlobals.
+////////////////////////////////////////////////////////////////////////
+
 // global global :-)
 FGGlobals *globals;
 
@@ -32,12 +38,47 @@ FGGlobals *globals;
 FGGlobals::FGGlobals() :
     freeze( false ),
     warp( 0 ),
-    warp_delta( 0 )
+    warp_delta( 0 ),
+    props(new SGPropertyNode),
+    initial_state(0),
+    commands(new SGCommandMgr)
 {
 }
 
 
 // Destructor
-FGGlobals::~FGGlobals() {
+FGGlobals::~FGGlobals() 
+{
+  delete initial_state;
+  delete props;
+  delete commands;
+}
+
+
+// Save the current state as the initial state.
+void
+FGGlobals::saveInitialState ()
+{
+  delete initial_state;
+  initial_state = new SGPropertyNode();
+  if (!copyProperties(props, initial_state))
+    SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
 }
 
+
+// Restore the saved initial state, if any
+void
+FGGlobals::restoreInitialState ()
+{
+  if (initial_state == 0) {
+    SG_LOG(SG_GENERAL, SG_ALERT, "No initial state available to restore!!!");
+  } else if (!copyProperties(initial_state, props)) {
+    SG_LOG(SG_GENERAL, SG_INFO,
+	   "Some errors restoring initial state (probably just read-only props)");
+  } else {
+    SG_LOG(SG_GENERAL, SG_INFO, "Initial state restored successfully");
+  }
+}
+
+
+// end of globals.cxx