khanat-opennel-code/code/nel/include/nel/3d/landscape_collision_grid.h
acemtp@users.sourceforge.net d5c601ffa5 initial version
2010-05-06 02:08:41 +02:00

91 lines
2.5 KiB
C++

// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef NL_LANDSCAPE_COLLISION_GRID_H
#define NL_LANDSCAPE_COLLISION_GRID_H
#include "nel/misc/types_nl.h"
#include "nel/3d/patch.h"
#include "nel/3d/visual_collision_manager.h"
#include <vector>
namespace NL3D
{
class CVisualCollisionManager;
// must be a power of 2.
#define NL_COLGRID_SIZE 32 // Size of the grid.
// NB: for speedup, one elt is always size of 2 meters.
// ***************************************************************************
/**
* A grid of Tiles Id. Each CVisualCollisionEntity has such a grid. This looks like CQuadGrid, but with
* special features.
* \author Lionel Berenguier
* \author Nevrax France
* \date 2001
*/
class CLandscapeCollisionGrid
{
public:
/// Constructor
CLandscapeCollisionGrid(CVisualCollisionManager *owner);
~CLandscapeCollisionGrid();
/// clear the chainlist in the quadgrid.
void clear();
/** Build the quadgrid with a array of patchblock. delta is the vector to apply to tiles coordinate,
* before insertion in the quadgrid (for precision consideration).
*/
void build(const std::vector<CPatchQuadBlock*> &quadBlocks, const CVector &delta);
/// select one entry in the chainQuad. pos is a position in World.
CVisualTileDescNode *select(const NLMISC::CVector &pos);
// ***********************
private:
CVisualCollisionManager *_Owner;
/// Array of list of CVisualTileDescNode.
bool _Cleared;
CVisualTileDescNode *_Grid[NL_COLGRID_SIZE*NL_COLGRID_SIZE];
uint _SizePower;
CVector _Delta;
private:
void addQuadToGrid(uint16 paBlockId, uint16 quadId, sint minx, sint maxx, sint miny, sint maxy);
};
} // NL3D
#endif // NL_LANDSCAPE_COLLISION_GRID_H
/* End of landscape_collision_grid.h */