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 "globals.hxx"
25 #include "fg_props.hxx"
29 ////////////////////////////////////////////////////////////////////////
30 // Implementation of FGGlobals.
31 ////////////////////////////////////////////////////////////////////////
38 FGGlobals::FGGlobals() :
40 #if defined(FX) && defined(XMESA)
45 props(new SGPropertyNode),
47 commands(new SGCommandMgr)
53 FGGlobals::~FGGlobals()
61 // Save the current state as the initial state.
63 FGGlobals::saveInitialState ()
66 initial_state = new SGPropertyNode();
67 if (!copyProperties(props, initial_state))
68 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
72 // Restore the saved initial state, if any
74 FGGlobals::restoreInitialState ()
76 if (initial_state == 0) {
77 SG_LOG(SG_GENERAL, SG_ALERT, "No initial state available to restore!!!");
78 } else if (!copyProperties(initial_state, props)) {
79 SG_LOG(SG_GENERAL, SG_INFO,
80 "Some errors restoring initial state (probably just read-only props)");
82 SG_LOG(SG_GENERAL, SG_INFO, "Initial state restored successfully");