mirror of https://github.com/axmolengine/axmol.git
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
//
|
|
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would be
|
|
// appreciated but is not required.
|
|
// 2. Altered source versions must be plainly marked as such, and must not be
|
|
// misrepresented as being the original software.
|
|
// 3. This notice may not be removed or altered from any source distribution.
|
|
//
|
|
|
|
#ifndef DETOURPROXIMITYGRID_H
|
|
#define DETOURPROXIMITYGRID_H
|
|
|
|
class dtProximityGrid
|
|
{
|
|
float m_cellSize;
|
|
float m_invCellSize;
|
|
|
|
struct Item
|
|
{
|
|
unsigned short id;
|
|
short x,y;
|
|
unsigned short next;
|
|
};
|
|
Item* m_pool;
|
|
int m_poolHead;
|
|
int m_poolSize;
|
|
|
|
unsigned short* m_buckets;
|
|
int m_bucketsSize;
|
|
|
|
int m_bounds[4];
|
|
|
|
public:
|
|
dtProximityGrid();
|
|
~dtProximityGrid();
|
|
|
|
bool init(const int poolSize, const float cellSize);
|
|
|
|
void clear();
|
|
|
|
void addItem(const unsigned short id,
|
|
const float minx, const float miny,
|
|
const float maxx, const float maxy);
|
|
|
|
int queryItems(const float minx, const float miny,
|
|
const float maxx, const float maxy,
|
|
unsigned short* ids, const int maxIds) const;
|
|
|
|
int getItemCountAt(const int x, const int y) const;
|
|
|
|
inline const int* getBounds() const { return m_bounds; }
|
|
inline float getCellSize() const { return m_cellSize; }
|
|
|
|
private:
|
|
// Explicitly disabled copy constructor and copy assignment operator.
|
|
dtProximityGrid(const dtProximityGrid&);
|
|
dtProximityGrid& operator=(const dtProximityGrid&);
|
|
};
|
|
|
|
dtProximityGrid* dtAllocProximityGrid();
|
|
void dtFreeProximityGrid(dtProximityGrid* ptr);
|
|
|
|
|
|
#endif // DETOURPROXIMITYGRID_H
|
|
|