+void
+FGGlobals::resetPropertyRoot()
+{
+ delete locale;
+
+ cleanupListeners();
+
+ // we don't strictly need to clear these (they will be reset when we
+ // initProperties again), but trying to reduce false-positives when dumping
+ // ref-counts.
+ positionLon.clear();
+ positionLat.clear();
+ positionAlt.clear();
+ viewLon.clear();
+ viewLat.clear();
+ viewAlt.clear();
+ orientPitch.clear();
+ orientHeading.clear();
+ orientRoll.clear();
+
+ // clear aliases so ref-counts are accurate when dumped
+ treeClearAliases(props);
+
+ SG_LOG(SG_GENERAL, SG_INFO, "root props refcount:" << props.getNumRefs());
+ treeDumpRefCounts(0, props);
+
+ //BaseStackSnapshot::dumpAll(std::cout);
+
+ props = new SGPropertyNode;
+ initProperties();
+ locale = new FGLocale(props);
+
+ // remove /sim/fg-root before writing to prevent hijacking
+ SGPropertyNode *n = props->getNode("/sim", true);
+ n->removeChild("fg-root", 0);
+ n = n->getChild("fg-root", 0, true);
+ n->setStringValue(fg_root.c_str());
+ n->setAttribute(SGPropertyNode::WRITE, false);
+}
+
+static std::string autosaveName()
+{
+ std::ostringstream os;
+ string_list versionParts = simgear::strutils::split(VERSION, ".");
+ if (versionParts.size() < 2) {
+ return "autosave.xml";
+ }
+
+ os << "autosave_" << versionParts[0] << "_" << versionParts[1] << ".xml";
+ return os.str();