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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2000-2009 Darklegion Development
This file is part of Tremulous.
Tremulous 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.
Tremulous 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 Tremulous; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "q_shared.h"
#include "qcommon.h"
#include "cm_polylib.h"
#define MAX_SUBMODELS 256
#define BOX_MODEL_HANDLE 255
#define CAPSULE_MODEL_HANDLE 254
typedef struct {
cplane_t *plane;
int children[2]; // negative numbers are leafs
} cNode_t;
typedef struct {
int cluster;
int area;
int firstLeafBrush;
int numLeafBrushes;
int firstLeafSurface;
int numLeafSurfaces;
} cLeaf_t;
typedef struct cmodel_s {
vec3_t mins, maxs;
cLeaf_t leaf; // submodels don't reference the main tree
} cmodel_t;
typedef struct cbrushedge_s
{
vec3_t p0;
vec3_t p1;
} cbrushedge_t;
typedef struct {
cplane_t *plane;
int planeNum;
int surfaceFlags;
int shaderNum;
winding_t *winding;
} cbrushside_t;
typedef struct {
int shaderNum; // the shader that determined the contents
int contents;
vec3_t bounds[2];
int numsides;
cbrushside_t *sides;
int checkcount; // to avoid repeated testings
qboolean collided; // marker for optimisation
cbrushedge_t *edges;
int numEdges;
} cbrush_t;
typedef struct {
int checkcount; // to avoid repeated testings
int surfaceFlags;
int contents;
struct patchCollide_s *pc;
} cPatch_t;
typedef struct {
int floodnum;
int floodvalid;
} cArea_t;
typedef struct {
char name[MAX_QPATH];
int numShaders;
dshader_t *shaders;
int numBrushSides;
cbrushside_t *brushsides;
int numPlanes;
cplane_t *planes;
int numNodes;
cNode_t *nodes;
int numLeafs;
cLeaf_t *leafs;
int numLeafBrushes;
int *leafbrushes;
int numLeafSurfaces;
int *leafsurfaces;
int numSubModels;
cmodel_t *cmodels;
int numBrushes;
cbrush_t *brushes;
int numClusters;
int clusterBytes;
byte *visibility;
qboolean vised; // if false, visibility is just a single cluster of ffs
int numEntityChars;
char *entityString;
int numAreas;
cArea_t *areas;
int *areaPortals; // [ numAreas*numAreas ] reference counts
int numSurfaces;
cPatch_t **surfaces; // non-patches will be NULL
int floodvalid;
int checkcount; // incremented on each trace
} clipMap_t;
// keep 1/8 unit away to keep the position valid before network snapping
// and to avoid various numeric issues
#define SURFACE_CLIP_EPSILON (0.125)
extern clipMap_t cm;
extern int c_pointcontents;
extern int c_traces, c_brush_traces, c_patch_traces;
extern cvar_t *cm_noAreas;
extern cvar_t *cm_noCurves;
extern cvar_t *cm_playerCurveClip;
// cm_test.c
typedef struct
{
float startRadius;
float endRadius;
} biSphere_t;
// Used for oriented capsule collision detection
typedef struct
{
float radius;
float halfheight;
vec3_t offset;
} sphere_t;
typedef struct {
traceType_t type;
vec3_t start;
vec3_t end;
vec3_t size[2]; // size of the box being swept through the model
vec3_t offsets[8]; // [signbits][x] = either size[0][x] or size[1][x]
float maxOffset; // longest corner length from origin
vec3_t extents; // greatest of abs(size[0]) and abs(size[1])
vec3_t bounds[2]; // enclosing box of start and end surrounding by size
vec3_t modelOrigin;// origin of the model tracing through
int contents; // ored contents of the model tracing through
qboolean isPoint; // optimized case
trace_t trace; // returned from trace call
sphere_t sphere; // sphere for oriendted capsule collision
biSphere_t biSphere;
qboolean testLateralCollision; // whether or not to test for lateral collision
} traceWork_t;
typedef struct leafList_s {
int count;
int maxcount;
qboolean overflowed;
int *list;
vec3_t bounds[2];
int lastLeaf; // for overflows where each leaf can't be stored individually
void (*storeLeafs)( struct leafList_s *ll, int nodenum );
} leafList_t;
int CM_BoxBrushes( const vec3_t mins, const vec3_t maxs, cbrush_t **list, int listsize );
void CM_StoreLeafs( leafList_t *ll, int nodenum );
void CM_StoreBrushes( leafList_t *ll, int nodenum );
void CM_BoxLeafnums_r( leafList_t *ll, int nodenum );
cmodel_t *CM_ClipHandleToModel( clipHandle_t handle );
qboolean CM_BoundsIntersect( const vec3_t mins, const vec3_t maxs, const vec3_t mins2, const vec3_t maxs2 );
qboolean CM_BoundsIntersectPoint( const vec3_t mins, const vec3_t maxs, const vec3_t point );
// cm_patch.c
struct patchCollide_s *CM_GeneratePatchCollide( int width, int height, vec3_t *points );
void CM_TraceThroughPatchCollide( traceWork_t *tw, const struct patchCollide_s *pc );
qboolean CM_PositionTestInPatchCollide( traceWork_t *tw, const struct patchCollide_s *pc );
void CM_ClearLevelPatches( void );
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