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/*
===========================================================================
Copyright (C) 2008 Leszek Godlewski
This file is part of OpenMoHAA source code.
OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
OpenMoHAA source code 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
/*
This file does not reference any globals, and has these entry points:
struct terPatchCollide_s *CM_GenerateTerPatchCollide(vec3_t origin, byte heightmap[9][9]);
void CM_TraceThroughTerPatchCollide(traceWork_t *tw, const struct terPatchCollide_s *tc);
qboolean CM_PositionTestInTerPatchCollide(traceWork_t *tw, const struct terPatchCollide_s *tc);
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#define TER_QUADS_PER_ROW 8
#define TER_TRIS_PER_PATCH (TER_QUADS_PER_ROW * TER_QUADS_PER_ROW * 2)
#define TER_PLANES_PER_TRI 5
typedef struct terTriangle_s {
cplane_t planes
[TER_PLANES_PER_TRI]; // 0 is the surface plane, 3 border planes follow and a cap to give it some finite volume
} terTriangle_t;
typedef struct terPatchCollide_s {
vec3_t bounds[2];
baseshader_t *shader;
terTriangle_t tris[TER_TRIS_PER_PATCH];
} terPatchCollide_t;
typedef struct terrainCollideSquare_s {
vec4_t plane[2];
int eMode;
} terrainCollideSquare_t;
typedef struct terrainCollide_s {
vec3_t vBounds[2];
terrainCollideSquare_t squares[8][8];
} terrainCollide_t;
void CM_PrepareGenerateTerrainCollide(void);
void CM_GenerateTerrainCollide(cTerraPatch_t *patch, terrainCollide_t *tc);
int CM_TerrainSquareType(int iTerrainPatch, int i, int j);
void CM_SwapTerraPatch(cTerraPatch_t* pPatch);
#ifdef __cplusplus
}
#endif
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