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