1 // tilemgr.hxx -- routines to handle dynamic management of scenery tiles
3 // Written by Curtis Olson, started January 1998.
5 // Copyright (C) 1997 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>
29 #include <simgear/structure/subsystem_mgr.hxx>
30 #include <simgear/bucket/newbucket.hxx>
31 #include "SceneryPager.hxx"
32 #include "tileentry.hxx"
33 #include "tilecache.hxx"
43 class SGReaderWriterOptions;
46 class FGTileMgr : public SGSubsystem {
57 load_state state, last_state;
59 // schedule a tile for loading, returns true when tile is already loaded
60 bool sched_tile( const SGBucket& b, double priority,bool current_view, double request_time);
62 // schedule a needed buckets for loading
63 void schedule_needed(const SGBucket& curr_bucket, double rangeM);
65 bool isTileDirSyncing(const std::string& tileFileName) const;
67 SGBucket previous_bucket;
68 SGBucket current_bucket;
70 osg::ref_ptr<simgear::SGReaderWriterOptions> _options;
72 double scheduled_visibility;
78 simgear::SGTerraSync* _terra_sync;
80 // update various queues internal queues
81 void update_queues(bool& isDownloadingScenery);
83 // schedule tiles for the viewer bucket
84 void schedule_tiles_at(const SGGeod& location, double rangeM);
86 SGPropertyNode_ptr _visibilityMeters;
87 SGPropertyNode_ptr _maxTileRangeM, _disableNasalHooks;
88 SGPropertyNode_ptr _scenery_loaded, _scenery_override;
90 osg::ref_ptr<flightgear::SceneryPager> _pager;
96 // Initialize the Tile Manager
98 virtual void reinit();
99 virtual void update(double dt);
101 const SGBucket& get_current_bucket () const { return current_bucket; }
103 // Returns true if scenery is available for the given lat, lon position
104 // within a range of range_m.
105 // lat and lon are expected to be in degrees.
106 bool schedule_scenery(const SGGeod& position, double range_m, double duration=0.0);
108 // Returns true if tiles around current view position have been loaded
109 bool isSceneryLoaded();
111 // notify the tile manahger the material library was reloaded,
112 // so it can pass this through to its options object
113 void materialLibChanged();
117 #endif // _TILEMGR_HXX