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 - http://www.flightgear.org/~curt
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 "renderer.hxx"
30 #include "viewmgr.hxx"
32 #include "fg_props.hxx"
36 ////////////////////////////////////////////////////////////////////////
37 // Implementation of FGGlobals.
38 ////////////////////////////////////////////////////////////////////////
45 FGGlobals::FGGlobals() :
46 renderer( new FGRenderer ),
47 subsystem_mgr( new SGSubsystemMgr ),
48 event_mgr( new SGEventMgr ),
51 #if defined(FX) && defined(XMESA)
60 current_panel( NULL ),
68 props( new SGPropertyNode ),
69 initial_state( NULL ),
71 commands( new SGCommandMgr ),
75 channel_options_list( NULL ),
76 initial_waypoints( NULL ),
91 FGGlobals::~FGGlobals()
102 // make sure only to delete the initial waypoints list if it acually
104 if (initial_waypoints)
105 delete initial_waypoints;
109 // set the fg_root path
110 void FGGlobals::set_fg_root (const string &root) {
113 // append /data to root if it exists
114 SGPath tmp( fg_root );
115 tmp.append( "data" );
116 tmp.append( "version" );
117 if ( ulFileExists( tmp.c_str() ) ) {
122 void FGGlobals::set_fg_scenery (const string &scenery) {
124 if (scenery.empty()) {
126 s.append( "Scenery" );
130 string_list path_list = sgPathSplit( s.str() );
133 for (unsigned i = 0; i < path_list.size(); i++) {
135 ulDir *d = ulOpenDir( path_list[i].c_str() );
140 SGPath pt( path_list[i] ), po( path_list[i] );
141 pt.append("Terrain");
142 po.append("Objects");
144 ulDir *td = ulOpenDir( pt.c_str() );
145 ulDir *od = ulOpenDir( po.c_str() );
147 if (td == NULL && od == NULL)
148 fg_scenery.push_back( path_list[i] );
151 fg_scenery.push_back( pt.str() );
155 fg_scenery.push_back( po.str() );
164 FGGlobals::get_renderer () const
170 FGGlobals::get_subsystem_mgr () const
172 return subsystem_mgr;
176 FGGlobals::get_subsystem (const char * name)
178 return subsystem_mgr->get_subsystem(name);
182 FGGlobals::add_subsystem (const char * name,
183 SGSubsystem * subsystem,
184 SGSubsystemMgr::GroupType type,
187 subsystem_mgr->add(name, subsystem, type, min_time_sec);
192 FGGlobals::get_event_mgr () const
198 // Save the current state as the initial state.
200 FGGlobals::saveInitialState ()
202 delete initial_state;
203 initial_state = new SGPropertyNode();
205 if (!copyProperties(props, initial_state))
206 SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
210 // Restore the saved initial state, if any
212 FGGlobals::restoreInitialState ()
214 if ( initial_state == 0 ) {
215 SG_LOG(SG_GENERAL, SG_ALERT,
216 "No initial state available to restore!!!");
220 SGPropertyNode *currentPresets = new SGPropertyNode;
221 SGPropertyNode *targetNode = fgGetNode( "/sim/presets" );
223 // stash the /sim/presets tree
224 if ( !copyProperties(targetNode, currentPresets) ) {
225 SG_LOG( SG_GENERAL, SG_ALERT, "Failed to save /sim/presets subtree" );
228 if ( copyProperties(initial_state, props) ) {
229 SG_LOG( SG_GENERAL, SG_INFO, "Initial state restored successfully" );
231 SG_LOG( SG_GENERAL, SG_INFO,
232 "Some errors restoring initial state (read-only props?)" );
235 // recover the /sim/presets tree
236 if ( !copyProperties(currentPresets, targetNode) ) {
237 SG_LOG( SG_GENERAL, SG_ALERT,
238 "Failed to restore /sim/presets subtree" );
241 delete currentPresets;
245 FGGlobals::get_current_view () const
247 return viewmgr->get_current_view();
250 // end of globals.cxx