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/*
Copyright (C) 1997-2001 Id Software, Inc.
Copyright (C) 2008 Andrey Nazarov
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "d_bsp.h"
#ifndef MIPLEVELS
#define MIPLEVELS 4
#endif
#define MAX_MAP_VIS ( MAX_MAP_LEAFS / 8 )
typedef struct mtexinfo_s { // used internally due to name len probs //ZOID
csurface_t c;
char name[MAX_TEXNAME];
#if USE_REF
vec3_t axis[2];
vec2_t offset;
struct image_s *image; // used for texturing
int numframes;
struct mtexinfo_s *next; // used for animation
#if USE_REF == REF_SOFT
vec_t mipadjust;
#endif
#endif
} mtexinfo_t;
#if USE_REF
typedef struct {
vec3_t point;
} mvertex_t;
typedef struct {
mvertex_t *v[2];
#if USE_REF == REF_SOFT
unsigned cachededgeoffset;
#endif
} medge_t;
typedef struct {
medge_t *edge;
int vert;
} msurfedge_t;
#define SURF_NOLM_MASK \
(SURF_SKY|SURF_WARP|SURF_FLOWING|SURF_TRANS33|SURF_TRANS66)
#define DSURF_PLANEBACK 1
typedef struct mface_s {
msurfedge_t *firstsurfedge;
int numsurfedges;
cplane_t *plane;
int drawflags; // DSURF_PLANEBACK, etc
byte *lightmap;
#if USE_REF == REF_SOFT
byte styles[MAX_LIGHTMAPS];
#endif
mtexinfo_t *texinfo;
int texturemins[2];
int extents[2];
#if USE_REF == REF_GL
int texnum[2];
int firstvert;
#else
struct surfcache_s *cachespots[MIPLEVELS]; // surface generation data
#endif
int drawframe;
#if USE_REF == REF_SOFT // && USE_DYNAMIC
int dlightframe;
int dlightbits;
#endif
struct mface_s *next;
} mface_t;
#endif
typedef struct mnode_s {
/* ======> */
cplane_t *plane; // never NULL to differentiate from leafs
#if USE_REF
union {
vec_t minmaxs[6];
struct {
vec3_t mins;
vec3_t maxs;
};
};
int visframe;
#endif
struct mnode_s *parent;
/* <====== */
struct mnode_s *children[2];
#if USE_REF
int numfaces;
mface_t *firstface;
#endif
} mnode_t;
typedef struct {
cplane_t *plane;
mtexinfo_t *texinfo;
} mbrushside_t;
typedef struct {
int contents;
int numsides;
mbrushside_t *firstbrushside;
int checkcount; // to avoid repeated testings
} mbrush_t;
typedef struct {
/* ======> */
cplane_t *plane; // always NULL to differentiate from nodes
#if USE_REF
vec3_t mins;
vec3_t maxs;
int visframe;
#endif
struct mnode_s *parent;
/* <====== */
int contents;
int cluster;
int area;
mbrush_t **firstleafbrush;
int numleafbrushes;
#if USE_REF
mface_t **firstleafface;
int numleaffaces;
#if USE_REF == REF_SOFT
unsigned key;
#endif
#endif
} mleaf_t;
typedef struct {
unsigned portalnum;
unsigned otherarea;
} mareaportal_t;
typedef struct {
int numareaportals;
mareaportal_t *firstareaportal;
int floodvalid;
} marea_t;
typedef struct mmodel_s {
#if USE_REF
/* ======> */
int type;
/* <====== */
#endif
vec3_t mins, maxs;
vec3_t origin; // for sounds or lights
mnode_t *headnode;
#if USE_REF
float radius;
int numfaces;
mface_t *firstface;
#endif
} mmodel_t;
typedef struct bsp_s {
list_t entry;
int refcount;
unsigned checksum;
mempool_t pool;
int numbrushsides;
mbrushside_t *brushsides;
int numtexinfo;
mtexinfo_t *texinfo;
int numplanes;
cplane_t *planes;
int numnodes;
mnode_t *nodes;
int numleafs;
mleaf_t *leafs;
int numleafbrushes;
mbrush_t **leafbrushes;
int nummodels;
mmodel_t *models;
int numbrushes;
mbrush_t *brushes;
int numvisibility;
int visrowsize;
dvis_t *vis;
int numentitychars;
char *entitystring;
int numareas;
marea_t *areas;
int lastareaportal; // largest portal number used
int numareaportals; // size of the array below
mareaportal_t *areaportals;
#if USE_REF
int numfaces;
mface_t *faces;
int numleaffaces;
mface_t **leaffaces;
int numlightmapbytes;
byte *lightmap;
int numvertices;
mvertex_t *vertices;
int numedges;
medge_t *edges;
int numsurfedges;
msurfedge_t *surfedges;
#endif
char name[1];
} bsp_t;
bsp_t *BSP_Load( const char *name );
void BSP_Free( bsp_t *bsp );
const char *BSP_GetError( void );
#if USE_REF
mface_t *BSP_LightPoint( mnode_t *node, vec3_t start, vec3_t end, int *ps, int *pt );
#endif
byte *BSP_ClusterVis( bsp_t *bsp, byte *mask, int cluster, int vis );
mleaf_t *BSP_PointLeaf( mnode_t *node, vec3_t p );
mmodel_t *BSP_InlineModel( bsp_t *bsp, const char *name );
void BSP_Init( void );
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