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//
// 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 DETOURTILECACHEBUILDER_H
#define DETOURTILECACHEBUILDER_H
#include "DetourAlloc.h"
#include "DetourStatus.h"
static const int DT_TILECACHE_MAGIC = 'D'<<24 | 'T'<<16 | 'L'<<8 | 'R'; ///< 'DTLR';
static const int DT_TILECACHE_VERSION = 1;
static const unsigned char DT_TILECACHE_NULL_AREA = 0;
static const unsigned char DT_TILECACHE_WALKABLE_AREA = 63;
static const unsigned short DT_TILECACHE_NULL_IDX = 0xffff;
struct dtTileCacheLayerHeader
{
int magic; ///< Data magic
int version; ///< Data version
int tx,ty,tlayer;
float bmin[3], bmax[3];
unsigned short hmin, hmax; ///< Height min/max range
unsigned char width, height; ///< Dimension of the layer.
unsigned char minx, maxx, miny, maxy; ///< Usable sub-region.
};
struct dtTileCacheLayer
{
dtTileCacheLayerHeader* header;
unsigned char regCount; ///< Region count.
unsigned char* heights;
unsigned char* areas;
unsigned char* cons;
unsigned char* regs;
};
struct dtTileCacheContour
{
int nverts;
unsigned char* verts;
unsigned char reg;
unsigned char area;
};
struct dtTileCacheContourSet
{
int nconts;
dtTileCacheContour* conts;
};
struct dtTileCachePolyMesh
{
int nvp;
int nverts; ///< Number of vertices.
int npolys; ///< Number of polygons.
unsigned short* verts; ///< Vertices of the mesh, 3 elements per vertex.
unsigned short* polys; ///< Polygons of the mesh, nvp*2 elements per polygon.
unsigned short* flags; ///< Per polygon flags.
unsigned char* areas; ///< Area ID of polygons.
};
struct dtTileCacheAlloc
{
virtual ~dtTileCacheAlloc();
virtual void reset() {}
virtual void* alloc(const size_t size)
{
return dtAlloc(size, DT_ALLOC_TEMP);
}
virtual void free(void* ptr)
{
dtFree(ptr);
}
};
struct dtTileCacheCompressor
{
virtual ~dtTileCacheCompressor();
virtual int maxCompressedSize(const int bufferSize) = 0;
virtual dtStatus compress(const unsigned char* buffer, const int bufferSize,
unsigned char* compressed, const int maxCompressedSize, int* compressedSize) = 0;
virtual dtStatus decompress(const unsigned char* compressed, const int compressedSize,
unsigned char* buffer, const int maxBufferSize, int* bufferSize) = 0;
};
dtStatus dtBuildTileCacheLayer(dtTileCacheCompressor* comp,
dtTileCacheLayerHeader* header,
const unsigned char* heights,
const unsigned char* areas,
const unsigned char* cons,
unsigned char** outData, int* outDataSize);
void dtFreeTileCacheLayer(dtTileCacheAlloc* alloc, dtTileCacheLayer* layer);
dtStatus dtDecompressTileCacheLayer(dtTileCacheAlloc* alloc, dtTileCacheCompressor* comp,
unsigned char* compressed, const int compressedSize,
dtTileCacheLayer** layerOut);
dtTileCacheContourSet* dtAllocTileCacheContourSet(dtTileCacheAlloc* alloc);
void dtFreeTileCacheContourSet(dtTileCacheAlloc* alloc, dtTileCacheContourSet* cset);
dtTileCachePolyMesh* dtAllocTileCachePolyMesh(dtTileCacheAlloc* alloc);
void dtFreeTileCachePolyMesh(dtTileCacheAlloc* alloc, dtTileCachePolyMesh* lmesh);
dtStatus dtMarkCylinderArea(dtTileCacheLayer& layer, const float* orig, const float cs, const float ch,
const float* pos, const float radius, const float height, const unsigned char areaId);
dtStatus dtMarkBoxArea(dtTileCacheLayer& layer, const float* orig, const float cs, const float ch,
const float* bmin, const float* bmax, const unsigned char areaId);
dtStatus dtMarkBoxArea(dtTileCacheLayer& layer, const float* orig, const float cs, const float ch,
const float* center, const float* halfExtents, const float* rotAux, const unsigned char areaId);
dtStatus dtBuildTileCacheRegions(dtTileCacheAlloc* alloc,
dtTileCacheLayer& layer,
const int walkableClimb);
dtStatus dtBuildTileCacheContours(dtTileCacheAlloc* alloc,
dtTileCacheLayer& layer,
const int walkableClimb, const float maxError,
dtTileCacheContourSet& lcset);
dtStatus dtBuildTileCachePolyMesh(dtTileCacheAlloc* alloc,
dtTileCacheContourSet& lcset,
dtTileCachePolyMesh& mesh);
/// Swaps the endianess of the compressed tile data's header (#dtTileCacheLayerHeader).
/// Tile layer data does not need endian swapping as it consits only of bytes.
/// @param[in,out] data The tile data array.
/// @param[in] dataSize The size of the data array.
bool dtTileCacheHeaderSwapEndian(unsigned char* data, const int dataSize);
#endif // DETOURTILECACHEBUILDER_H
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