1 // globals.cxx -- Global state that needs to be shared among the sim modules
3 // Written by Curtis Olson, started July 2000.
5 // Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <simgear/misc/commands.hxx>
26 #include <Environment/environment_mgr.hxx>
28 #include "globals.hxx"
29 #include "viewmgr.hxx"
31 #include "fg_props.hxx"
35 ////////////////////////////////////////////////////////////////////////
36 // Implementation of FGGlobals.
37 ////////////////////////////////////////////////////////////////////////
44 FGGlobals::FGGlobals() :
45 subsystem_mgr( new FGSubsystemMgr ),
49 #if defined(FX) && defined(XMESA)
60 environment_mgr( NULL ),
67 props( new SGPropertyNode ),
68 initial_state( NULL ),
70 commands( new SGCommandMgr ),
72 texture_loader( NULL ),
75 channel_options_list( NULL ),
84 FGGlobals::~FGGlobals()
94 // Save the current state as the initial state.
96 FGGlobals::saveInitialState ()
99 initial_state = new SGPropertyNode();
100 if (!copyProperties(props, initial_state))
101 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
105 // Restore the saved initial state, if any
107 FGGlobals::restoreInitialState ()
109 if ( initial_state == 0 ) {
110 SG_LOG(SG_GENERAL, SG_ALERT,
111 "No initial state available to restore!!!");
115 SGPropertyNode *currentPresets = new SGPropertyNode;
116 SGPropertyNode *targetNode = fgGetNode( "/sim/presets" );
118 // stash the /sim/presets tree
119 if ( !copyProperties(targetNode, currentPresets) ) {
120 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to save /sim/presets subtree" );
123 if ( copyProperties(initial_state, props) ) {
124 SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
126 SG_LOG( SG_GENERAL, SG_INFO,
127 "Some errors restoring initial state (read-only props?)" );
130 // recover the /sim/presets tree
131 if ( !copyProperties(currentPresets, targetNode) ) {
132 SG_LOG( SG_GENERAL, SG_ALERT,
133 "Failed to restore /sim/presets subtree" );
136 delete currentPresets;
140 FGGlobals::get_current_view () const
142 return viewmgr->get_current_view();
145 // end of globals.cxx