//
// 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 DETOURNAVMESHBUILDER_H
#define DETOURNAVMESHBUILDER_H

#include "DetourAlloc.h"


// The units of the parameters are specified in parenthesis as follows:
// (vx) voxels, (wu) world units
struct dtNavMeshCreateParams
{
	// Navmesh vertices.
	const unsigned short* verts;			// Array of vertices, each vertex has 3 components. (vx).
	int vertCount;							// Vertex count
	// Navmesh polygons
	const unsigned short* polys;			// Array of polygons, uses same format as rcPolyMesh. 
	const unsigned short* polyFlags;		// Array of flags per polygon.
	const unsigned char* polyAreas;			// Array of area ids per polygon.
	int polyCount;							// Number of polygons
	int nvp;								// Number of verts per polygon.
	// Navmesh Detail
	const unsigned int* detailMeshes;		// Detail meshes, uses same format as rcPolyMeshDetail.
	const float* detailVerts;				// Detail mesh vertices, uses same format as rcPolyMeshDetail (wu).
	int detailVertsCount;					// Total number of detail vertices
	const unsigned char* detailTris;		// Array of detail tris per detail mesh.
	int detailTriCount;						// Total number of detail triangles.
	// Off-Mesh Connections.
	const float* offMeshConVerts;			// Off-mesh connection vertices (wu).
	const float* offMeshConRad;				// Off-mesh connection radii (wu).
	const unsigned short* offMeshConFlags;	// Off-mesh connection flags.
	const unsigned char* offMeshConAreas;	// Off-mesh connection area ids.
	const unsigned char* offMeshConDir;		// Off-mesh connection direction flags (1 = bidir, 0 = oneway).
	int offMeshConCount;					// Number of off-mesh connections
	// Tile location
	unsigned int userId;					// User ID bound to the tile.
	int tileX, tileY;						// Tile location (tile coords).
	float bmin[3], bmax[3];					// Tile bounds (wu).
	// Settings
	float walkableHeight;					// Agent height (wu).
	float walkableRadius;					// Agent radius (wu).
	float walkableClimb;					// Agent max climb (wu).
	float cs;								// Cell size (xz) (wu).
	float ch;								// Cell height (y) (wu).
	int tileSize;							// Tile size (width & height) (vx).
};

// Build navmesh data from given input data.
bool dtCreateNavMeshData(dtNavMeshCreateParams* params, unsigned char** outData, int* outDataSize);

// Swaps endianess of navmesh header.
bool dtNavMeshHeaderSwapEndian(unsigned char* data, const int dataSize);

// Swaps endianess of the navmesh data. This function assumes that the header is in correct
// endianess already. Call dtNavMeshHeaderSwapEndian() first on the data if the data is
// assumed to be in wrong endianess to start with. If converting from native endianess to foreign,
// call dtNavMeshHeaderSwapEndian() after the data has been swapped.
bool dtNavMeshDataSwapEndian(unsigned char* data, const int dataSize);

#endif // DETOURNAVMESHBUILDER_H