nevrax.org : docs

00001 
+00007 /* Copyright, 2001 Nevrax Ltd.
+00008  *
+00009  * This file is part of NEVRAX NEL.
+00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
+00011  * it under the terms of the GNU General Public License as published by
+00012  * the Free Software Foundation; either version 2, or (at your option)
+00013  * any later version.
+00014 
+00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
+00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
+00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+00018  * General Public License for more details.
+00019 
+00020  * You should have received a copy of the GNU General Public License
+00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
+00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+00023  * MA 02111-1307, USA.
+00024  */
+00025 
+00026 #ifndef NL_LANDSCAPE_COLLISION_GRID_H
+00027 #define NL_LANDSCAPE_COLLISION_GRID_H
+00028 
+00029 #include "nel/misc/types_nl.h"
+00030 #include "3d/patch.h"
+00031 #include "3d/visual_collision_manager.h"
+00032 #include <vector>
+00033 
+00034 
+00035 namespace NL3D 
+00036 {
+00037 
+00038 
+00039 class   CVisualCollisionManager;
+00040 
+00041 
+00042 // must be a power of 2.
+00043 #define NL_COLGRID_SIZE 32                                                                      // Size of the grid.
+00044 // NB: for speedup, one elt is always size of 2 meters.
+00045 
+00046 
+00047 // ***************************************************************************
+00055 class CLandscapeCollisionGrid
+00056 {
+00057 public:
+00058 
+00060         CLandscapeCollisionGrid(CVisualCollisionManager *owner);
+00061         ~CLandscapeCollisionGrid();
+00062 
+00063 
+00065         void                    clear();
+00069         void                    build(const std::vector<CPatchQuadBlock*> &quadBlocks, const CVector &delta);
+00070 
+00071 
+00073         CVisualTileDescNode                     *select(const NLMISC::CVector &pos);
+00074 
+00075 
+00076 // ***********************
+00077 private:
+00078         CVisualCollisionManager         *_Owner;
+00079 
+00080 
+00082         bool                                            _Cleared;
+00083         CVisualTileDescNode                     *_Grid[NL_COLGRID_SIZE*NL_COLGRID_SIZE];
+00084         uint                                            _SizePower;
+00085         CVector                                         _Delta;
+00086 
+00087 
+00088 private:
+00089         void                    addQuadToGrid(uint16 paBlockId, uint16 quadId, sint minx, sint maxx, sint miny, sint maxy);
+00090 
+00091 
+00092 };
+00093 
+00094 
+00095 } // NL3D
+00096 
+00097 
+00098 #endif // NL_LANDSCAPE_COLLISION_GRID_H
+00099 
+00100 /* End of landscape_collision_grid.h */
+