1 // fdm_shell.hxx -- encapsulate FDM implementations as well-behaved subsystems
3 // Written by James Turner, started June 2010.
5 // Copyright (C) 2010 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.
23 #ifndef FG_FDM_SHELL_HXX
24 #define FG_FDM_SHELL_HXX
26 #include <simgear/structure/subsystem_mgr.hxx>
32 * Wrap an FDM implementation in a subsystem with standard semantics
33 * Notably, deal with the various cases in which update() should not
34 * be called, such as replay or before scenery has loaded
36 * This class also provides the factory method which creates the
37 * specific FDM class (createImplementation)
39 class FDMShell : public SGSubsystem
46 virtual void reinit();
49 virtual void unbind();
51 virtual void update(double dt);
55 void createImplementation();
58 SGPropertyNode* _props; // root property tree for this FDM instance
62 #endif // of FG_FDM_SHELL_HXX