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/sound/soundmgr_openal.hxx>
25 #include <simgear/structure/commands.hxx>
26 #include <simgear/misc/sg_path.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 SGSubsystemMgr ),
46 event_mgr( new SGEventMgr ),
50 #if defined(FX) && defined(XMESA)
59 current_panel( NULL ),
67 props( new SGPropertyNode ),
68 initial_state( NULL ),
70 commands( new SGCommandMgr ),
74 channel_options_list( NULL ),
88 FGGlobals::~FGGlobals()
98 // make sure only to delete the initial waypoints list if it acually
100 if (initial_waypoints)
101 delete initial_waypoints;
105 // set the fg_root path
106 void FGGlobals::set_fg_root (const string &root) {
109 // append /data to root if it exists
110 SGPath tmp( fg_root );
111 tmp.append( "data" );
112 tmp.append( "version" );
113 if ( ulFileExists( tmp.c_str() ) ) {
120 FGGlobals::get_subsystem_mgr () const
122 return subsystem_mgr;
126 FGGlobals::get_subsystem (const char * name)
128 return subsystem_mgr->get_subsystem(name);
132 FGGlobals::add_subsystem (const char * name,
133 SGSubsystem * subsystem,
134 SGSubsystemMgr::GroupType type,
137 subsystem_mgr->add(name, subsystem, type, min_time_sec);
142 FGGlobals::get_event_mgr () const
148 // Save the current state as the initial state.
150 FGGlobals::saveInitialState ()
152 delete initial_state;
153 initial_state = new SGPropertyNode();
155 if (!copyProperties(props, initial_state))
156 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
160 // Restore the saved initial state, if any
162 FGGlobals::restoreInitialState ()
164 if ( initial_state == 0 ) {
165 SG_LOG(SG_GENERAL, SG_ALERT,
166 "No initial state available to restore!!!");
170 SGPropertyNode *currentPresets = new SGPropertyNode;
171 SGPropertyNode *targetNode = fgGetNode( "/sim/presets" );
173 // stash the /sim/presets tree
174 if ( !copyProperties(targetNode, currentPresets) ) {
175 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to save /sim/presets subtree" );
178 if ( copyProperties(initial_state, props) ) {
179 SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
181 SG_LOG( SG_GENERAL, SG_INFO,
182 "Some errors restoring initial state (read-only props?)" );
185 // recover the /sim/presets tree
186 if ( !copyProperties(currentPresets, targetNode) ) {
187 SG_LOG( SG_GENERAL, SG_ALERT,
188 "Failed to restore /sim/presets subtree" );
191 delete currentPresets;
195 FGGlobals::get_current_view () const
197 return viewmgr->get_current_view();
200 // end of globals.cxx