+FGGlobals::~FGGlobals()
+{
+ delete soundmgr;
+ delete subsystem_mgr;
+ delete event_mgr;
+ delete initial_state;
+ delete props;
+ delete io;
+ delete fontcache;
+ delete renderer;
+ delete initial_waypoints;
+}
+
+
+// set the fg_root path
+void FGGlobals::set_fg_root (const string &root) {
+ fg_root = root;
+
+ // append /data to root if it exists
+ SGPath tmp( fg_root );
+ tmp.append( "data" );
+ tmp.append( "version" );
+ if ( ulFileExists( tmp.c_str() ) ) {
+ fg_root += "/data";
+ }
+
+ fgSetString("/sim/fg-root", fg_root.c_str());
+}
+
+void FGGlobals::set_fg_scenery (const string &scenery) {
+ SGPath s;
+ if (scenery.empty()) {
+ s.set( fg_root );
+ s.append( "Scenery" );
+ } else
+ s.set( scenery );
+
+ string_list path_list = sgPathSplit( s.str() );
+ fg_scenery.clear();
+
+ for (unsigned i = 0; i < path_list.size(); i++) {
+
+ ulDir *d = ulOpenDir( path_list[i].c_str() );
+ if (d == NULL)
+ continue;
+ ulCloseDir( d );
+
+ SGPath pt( path_list[i] ), po( path_list[i] );
+ pt.append("Terrain");
+ po.append("Objects");
+
+ ulDir *td = ulOpenDir( pt.c_str() );
+ ulDir *od = ulOpenDir( po.c_str() );
+
+ if (td == NULL && od == NULL)
+ fg_scenery.push_back( path_list[i] );
+ else {
+ if (td != NULL) {
+ fg_scenery.push_back( pt.str() );
+ ulCloseDir( td );
+ }
+ if (od != NULL) {
+ fg_scenery.push_back( po.str() );
+ ulCloseDir( od );
+ }
+ }
+ // insert a marker for FGTileEntry::load(), so that
+ // FG_SCENERY=A:B becomes list ["A/Terrain", "A/Objects", "",
+ // "B/Terrain", "B/Objects", ""]
+ fg_scenery.push_back("");
+ }
+}
+
+
+FGRenderer *
+FGGlobals::get_renderer () const
+{
+ return renderer;
+}
+
+SGSubsystemMgr *
+FGGlobals::get_subsystem_mgr () const
+{
+ return subsystem_mgr;
+}
+
+SGSubsystem *
+FGGlobals::get_subsystem (const char * name)
+{
+ return subsystem_mgr->get_subsystem(name);
+}
+
+void
+FGGlobals::add_subsystem (const char * name,
+ SGSubsystem * subsystem,
+ SGSubsystemMgr::GroupType type,
+ double min_time_sec)
+{
+ subsystem_mgr->add(name, subsystem, type, min_time_sec);
+}
+
+
+SGEventMgr *
+FGGlobals::get_event_mgr () const
+{
+ return event_mgr;
+}
+
+
+// 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!!!");
+ return;
+ }
+
+ SGPropertyNode *currentPresets = new SGPropertyNode;
+ SGPropertyNode *targetNode = fgGetNode( "/sim/presets" );
+
+ // stash the /sim/presets tree
+ if ( !copyProperties(targetNode, currentPresets) ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Failed to save /sim/presets subtree" );
+ }
+
+ if ( copyProperties(initial_state, props) ) {
+ SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
+ } else {
+ SG_LOG( SG_GENERAL, SG_INFO,
+ "Some errors restoring initial state (read-only props?)" );
+ }
+
+ // recover the /sim/presets tree
+ if ( !copyProperties(currentPresets, targetNode) ) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Failed to restore /sim/presets subtree" );
+ }
+
+ delete currentPresets;
+}
+
+FGViewer *
+FGGlobals::get_current_view () const
+{
+ return viewmgr->get_current_view();