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>
27 #include <Instrumentation/instrument_mgr.hxx>
28 #include <Systems/system_mgr.hxx>
30 #include "globals.hxx"
31 #include "viewmgr.hxx"
33 #include "fg_props.hxx"
37 ////////////////////////////////////////////////////////////////////////
38 // Implementation of FGGlobals.
39 ////////////////////////////////////////////////////////////////////////
46 FGGlobals::FGGlobals() :
48 #if defined(FX) && defined(XMESA)
54 systemmgr(new FGSystemMgr),
55 instrumentmgr(new FGInstrumentMgr),
56 props(new SGPropertyNode),
58 commands(new SGCommandMgr),
65 FGGlobals::~FGGlobals()
74 // Save the current state as the initial state.
76 FGGlobals::saveInitialState ()
79 initial_state = new SGPropertyNode();
80 if (!copyProperties(props, initial_state))
81 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
85 // Restore the saved initial state, if any
87 FGGlobals::restoreInitialState ()
89 if (initial_state == 0) {
90 SG_LOG(SG_GENERAL, SG_ALERT, "No initial state available to restore!!!");
91 } else if (!copyProperties(initial_state, props)) {
92 SG_LOG(SG_GENERAL, SG_INFO,
93 "Some errors restoring initial state (probably just read-only props)");
95 SG_LOG(SG_GENERAL, SG_INFO, "Initial state restored successfully");
100 FGGlobals::get_current_view () const
102 return viewmgr->get_current_view();
105 // end of globals.cxx