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 ),
84 FGGlobals::~FGGlobals()
94 // make sure only to delete the initial waypoints list if it acually
96 if (initial_waypoints)
97 delete initial_waypoints;
101 // set the fg_root path
102 void FGGlobals::set_fg_root (const string &root) {
105 // append /data to root if it exists
106 SGPath tmp( fg_root );
107 tmp.append( "data" );
108 tmp.append( "version" );
109 if ( ulFileExists( tmp.c_str() ) ) {
116 FGGlobals::get_subsystem_mgr () const
118 return subsystem_mgr;
122 FGGlobals::get_subsystem (const char * name)
124 return subsystem_mgr->get_subsystem(name);
128 FGGlobals::add_subsystem (const char * name,
129 SGSubsystem * subsystem,
130 SGSubsystemMgr::GroupType type,
133 subsystem_mgr->add(name, subsystem, type, min_time_sec);
138 FGGlobals::get_event_mgr () const
144 // Save the current state as the initial state.
146 FGGlobals::saveInitialState ()
148 delete initial_state;
149 initial_state = new SGPropertyNode();
151 if (!copyProperties(props, initial_state))
152 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
156 // Restore the saved initial state, if any
158 FGGlobals::restoreInitialState ()
160 if ( initial_state == 0 ) {
161 SG_LOG(SG_GENERAL, SG_ALERT,
162 "No initial state available to restore!!!");
166 SGPropertyNode *currentPresets = new SGPropertyNode;
167 SGPropertyNode *targetNode = fgGetNode( "/sim/presets" );
169 // stash the /sim/presets tree
170 if ( !copyProperties(targetNode, currentPresets) ) {
171 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to save /sim/presets subtree" );
174 if ( copyProperties(initial_state, props) ) {
175 SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
177 SG_LOG( SG_GENERAL, SG_INFO,
178 "Some errors restoring initial state (read-only props?)" );
181 // recover the /sim/presets tree
182 if ( !copyProperties(currentPresets, targetNode) ) {
183 SG_LOG( SG_GENERAL, SG_ALERT,
184 "Failed to restore /sim/presets subtree" );
187 delete currentPresets;
191 FGGlobals::get_current_view () const
193 return viewmgr->get_current_view();
196 // end of globals.cxx