1 // globals.hxx -- 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
27 #include <simgear/compiler.h>
28 #include <simgear/props/props.hxx>
29 #include <simgear/structure/subsystem_mgr.hxx>
30 #include <simgear/misc/sg_path.hxx>
36 typedef std::vector<std::string> string_list;
37 typedef std::vector<SGPath> PathList;
39 // Forward declarations
41 // This file is included, directly or indirectly, almost everywhere in
42 // FlightGear, so if any of its dependencies changes, most of the sim
43 // has to be recompiled. Using these forward declarations helps us to
44 // avoid including a lot of header files (and thus, a lot of
45 // dependencies). Since Most of the methods simply set or return
46 // pointers, we don't need to know anything about the class details
69 namespace simgear { namespace pkg {
74 * Bucket for subsystem pointers representing the sim's state.
82 // properties, destroy last
83 SGPropertyNode_ptr props;
89 SGSubsystemMgr *subsystem_mgr;
90 SGEventMgr *event_mgr;
92 // Number of milliseconds elapsed since the start of the program.
95 // Root of FlightGear data tree
99 * locations to search for (non-scenery) data.
101 PathList additional_data_paths;
103 // Users home directory for data
106 // Roots of FlightGear scenery tree
107 string_list fg_scenery;
108 string_list secure_fg_scenery;
115 // Material properties library
116 SGSharedPtr<SGMaterialLib> matlib;
118 SGCommandMgr *commands;
120 // list of serial port-like configurations
121 string_list *channel_options_list;
123 // A list of initial waypoints that are read from the command line
124 // and or flight-plan file during initialization
125 string_list *initial_waypoints;
127 FGFontCache *fontcache;
130 FGTACANList *channellist;
132 /// roots of Aircraft trees
133 string_list fg_aircraft_dirs;
134 SGPath catalog_aircraft_dir;
136 bool haveUserSettings;
138 SGPropertyNode_ptr positionLon, positionLat, positionAlt;
139 SGPropertyNode_ptr viewLon, viewLat, viewAlt;
140 SGPropertyNode_ptr orientHeading, orientPitch, orientRoll;
143 * helper to initialise standard properties on a new property tree
145 void initProperties();
147 SGSharedPtr<FGSampleQueue> _chatter_queue;
149 void cleanupListeners();
151 typedef std::vector<SGPropertyChangeListener*> SGPropertyChangeListenerVec;
152 SGPropertyChangeListenerVec _listeners_to_cleanup;
154 SGSharedPtr<simgear::pkg::Root> _packageRoot;
158 virtual ~FGGlobals();
160 virtual FGRenderer *get_renderer () const;
161 void set_renderer(FGRenderer* render);
163 SGSubsystemMgr *get_subsystem_mgr () const;
165 SGSubsystem *get_subsystem (const char * name) const;
168 T* get_subsystem() const
170 return dynamic_cast<T*>(get_subsystem(T::subsystemName()));
174 void add_subsystem (const char * name,
175 SGSubsystem * subsystem,
176 SGSubsystemMgr::GroupType
177 type = SGSubsystemMgr::GENERAL,
178 double min_time_sec = 0);
181 T* add_new_subsystem (SGSubsystemMgr::GroupType
182 type = SGSubsystemMgr::GENERAL,
183 double min_time_sec = 0)
186 add_subsystem(T::subsystemName(), sub, type, min_time_sec);
190 SGEventMgr *get_event_mgr () const;
192 inline double get_sim_time_sec () const { return sim_time_sec; }
193 inline void inc_sim_time_sec (double dt) { sim_time_sec += dt; }
194 inline void set_sim_time_sec (double t) { sim_time_sec = t; }
196 inline const std::string &get_fg_root () const { return fg_root; }
197 void set_fg_root (const std::string &root);
200 * Get list of data locations. fg_root is always the final item in the
203 PathList get_data_paths() const;
206 * Get data locations which contain the file path suffix. Eg pass ing
207 * 'AI/Traffic' to get all data paths which define <path>/AI/Traffic subdir
209 PathList get_data_paths(const std::string& suffix) const;
211 void append_data_path(const SGPath& path);
214 * Given a path suffix (eg 'Textures' or 'AI/Traffic'), find the
215 * first data directory which defines it.
217 SGPath find_data_dir(const std::string& pathSuffix) const;
219 inline const std::string &get_fg_home () const { return fg_home; }
220 void set_fg_home (const std::string &home);
222 inline const string_list &get_fg_scenery () const { return fg_scenery; }
223 inline const string_list &get_secure_fg_scenery () const { return secure_fg_scenery; }
225 * Add a scenery directory
227 * secure = allow Nasal to read this directory; to avoid
228 * can-read-any-file security holes, do NOT set this on directories
229 * obtained from the property tree (e.g. /sim/terrasync/scenery-dir)
230 * or other Nasal-writable places
232 void append_fg_scenery (const std::string &scenery, bool secure = false);
234 void clear_fg_scenery();
237 * specify a path we'll prepend to the aircraft paths list if non-empty.
238 * This is used with packaged aircraft, to ensure their catalog (and hence,
239 * dependency packages) are found correctly.
241 void set_catalog_aircraft_path(const SGPath& path);
243 string_list get_aircraft_paths() const;
245 void append_aircraft_path(const std::string& path);
246 void append_aircraft_paths(const std::string& path);
249 * Given a path to an aircraft-related resource file, resolve it
250 * against the appropriate root. This means looking at the location
251 * defined by /sim/aircraft-dir, and then aircraft_path in turn,
252 * finishing with fg_root/Aircraft.
254 * if the path could not be resolved, an empty path is returned.
256 SGPath resolve_aircraft_path(const std::string& branch) const;
259 * Same as above, but test for non 'Aircraft/' branch paths, and
260 * always resolve them against fg_root.
262 SGPath resolve_maybe_aircraft_path(const std::string& branch) const;
265 * Search in the following directories:
267 * 1. Root directory of current aircraft (defined by /sim/aircraft-dir)
268 * 2. All aircraft directories if branch starts with Aircraft/
269 * 3. fg_data directory
271 SGPath resolve_resource_path(const std::string& branch) const;
273 inline const std::string &get_browser () const { return browser; }
274 void set_browser (const std::string &b) { browser = b; }
276 long int get_warp() const;
277 void set_warp( long int w );
279 long int get_warp_delta() const;
280 void set_warp_delta( long int d );
282 inline SGTime *get_time_params() const { return time_params; }
283 inline void set_time_params( SGTime *t ) { time_params = t; }
285 inline SGMaterialLib *get_matlib() const { return matlib; }
286 void set_matlib( SGMaterialLib *m );
288 inline SGPropertyNode *get_props () { return props; }
291 * @brief reset the property tree to new, empty tree. Ensure all
292 * subsystems are shutdown and unbound before call this.
294 void resetPropertyRoot();
296 inline FGLocale* get_locale () { return locale; }
298 inline SGCommandMgr *get_commands () { return commands; }
300 SGGeod get_aircraft_position() const;
302 SGVec3d get_aircraft_position_cart() const;
304 void get_aircraft_orientation(double& heading, double& pitch, double& roll);
306 SGGeod get_view_position() const;
308 SGVec3d get_view_position_cart() const;
310 inline string_list *get_channel_options_list () {
311 return channel_options_list;
313 inline void set_channel_options_list( string_list *l ) {
314 channel_options_list = l;
317 inline string_list *get_initial_waypoints () {
318 return initial_waypoints;
321 inline void set_initial_waypoints (string_list *list) {
322 initial_waypoints = list;
325 FGViewMgr *get_viewmgr() const;
326 FGViewer *get_current_view() const;
328 FGControls *get_controls() const;
330 FGScenery * get_scenery () const;
332 FGTileMgr * get_tile_mgr () const;
334 inline FGFontCache *get_fontcache() const { return fontcache; }
336 inline FGTACANList *get_channellist() const { return channellist; }
337 inline void set_channellist( FGTACANList *c ) { channellist = c; }
340 * Load user settings from autosave.xml
342 void loadUserSettings(const SGPath& datapath);
345 * Save user settings in autosave.xml
347 void saveUserSettings();
349 FGSampleQueue* get_chatter_queue() const;
350 void set_chatter_queue(FGSampleQueue* queue);
352 void addListenerToCleanup(SGPropertyChangeListener* l);
354 simgear::pkg::Root* packageRoot();
355 void setPackageRoot(const SGSharedPtr<simgear::pkg::Root>& p);
359 extern FGGlobals *globals;
362 #endif // _GLOBALS_HXX