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 ),
66 props( new SGPropertyNode ),
67 initial_state( NULL ),
69 commands( new SGCommandMgr ),
71 texture_loader( NULL ),
74 channel_options_list( NULL ),
83 FGGlobals::~FGGlobals()
94 FGGlobals::get_subsystem_mgr () const
100 FGGlobals::get_subsystem (const char * name)
102 return subsystem_mgr->get_subsystem(name);
106 FGGlobals::add_subsystem (const char * name,
107 FGSubsystem * subsystem,
108 FGSubsystemMgr::GroupType type,
111 subsystem_mgr->add(name, subsystem, type, min_time_sec);
115 // Save the current state as the initial state.
117 FGGlobals::saveInitialState ()
119 delete initial_state;
120 initial_state = new SGPropertyNode();
121 if (!copyProperties(props, initial_state))
122 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
126 // Restore the saved initial state, if any
128 FGGlobals::restoreInitialState ()
130 if ( initial_state == 0 ) {
131 SG_LOG(SG_GENERAL, SG_ALERT,
132 "No initial state available to restore!!!");
136 SGPropertyNode *currentPresets = new SGPropertyNode;
137 SGPropertyNode *targetNode = fgGetNode( "/sim/presets" );
139 // stash the /sim/presets tree
140 if ( !copyProperties(targetNode, currentPresets) ) {
141 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to save /sim/presets subtree" );
144 if ( copyProperties(initial_state, props) ) {
145 SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
147 SG_LOG( SG_GENERAL, SG_INFO,
148 "Some errors restoring initial state (read-only props?)" );
151 // recover the /sim/presets tree
152 if ( !copyProperties(currentPresets, targetNode) ) {
153 SG_LOG( SG_GENERAL, SG_ALERT,
154 "Failed to restore /sim/presets subtree" );
157 delete currentPresets;
161 FGGlobals::get_current_view () const
163 return viewmgr->get_current_view();
166 // end of globals.cxx