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/*
Copyright (C) 1997-2001 Id Software, Inc.
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.
*/
#ifndef __MODEL__
#define __MODEL__
/*
d*_t structures are on-disk representations
m*_t structures are in-memory
*/
/*
==============================================================================
BRUSH MODELS
==============================================================================
*/
//
// in memory representation
//
// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct
{
vec3_t position;
} mvertex_t;
#define SIDE_FRONT 0
#define SIDE_BACK 1
#define SIDE_ON 2
// plane_t structure
// !!! if this is changed, it must be changed in asm_i386.h too !!!
typedef struct mplane_s
{
vec3_t normal;
float dist;
byte type; // for texture axis selection and fast side tests
byte signbits; // signx + signy<<1 + signz<<1
byte pad[2];
} mplane_t;
// FIXME: differentiate from texinfo SURF_ flags
#define SURF_PLANEBACK 2
#define SURF_DRAWSKY 4 // sky brush face
#define SURF_DRAWTURB 0x10
#define SURF_DRAWBACKGROUND 0x40
#define SURF_DRAWSKYBOX 0x80 // sky box
#define SURF_FLOW 0x100 //PGM
// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct
{
unsigned short v[2];
unsigned int cachededgeoffset;
} medge_t;
typedef struct mtexinfo_s
{
float vecs[2][4];
float mipadjust;
image_t *image;
int flags;
int numframes;
struct mtexinfo_s *next; // animation chain
} mtexinfo_t;
typedef struct msurface_s
{
int visframe; // should be drawn when node is crossed
int dlightframe;
int dlightbits;
mplane_t *plane;
int flags;
int firstedge; // look up in model->surfedges[], negative numbers
int numedges; // are backwards edges
// surface generation data
struct surfcache_s *cachespots[MIPLEVELS];
short texturemins[2];
short extents[2];
mtexinfo_t *texinfo;
// lighting info
byte styles[MAXLIGHTMAPS];
byte *samples; // [numstyles*surfsize]
struct msurface_s *nextalphasurface;
} msurface_t;
#define CONTENTS_NODE -1
typedef struct mnode_s
{
// common with leaf
int contents; // CONTENTS_NODE, to differentiate from leafs
int visframe; // node needs to be traversed if current
short minmaxs[6]; // for bounding box culling
struct mnode_s *parent;
// node specific
mplane_t *plane;
struct mnode_s *children[2];
unsigned short firstsurface;
unsigned short numsurfaces;
} mnode_t;
typedef struct mleaf_s
{
// common with node
int contents; // wil be something other than CONTENTS_NODE
int visframe; // node needs to be traversed if current
short minmaxs[6]; // for bounding box culling
struct mnode_s *parent;
// leaf specific
int cluster;
int area;
msurface_t **firstmarksurface;
int nummarksurfaces;
int key; // BSP sequence number for leaf's contents
} mleaf_t;
//===================================================================
//
// Whole model
//
typedef enum {mod_bad, mod_brush, mod_sprite, mod_alias } modtype_t;
typedef struct model_s
{
char name[MAX_QPATH];
int registration_sequence;
modtype_t type;
int numframes;
int flags;
//
// volume occupied by the model graphics
//
vec3_t mins, maxs;
//
// solid volume for clipping (sent from server)
//
qboolean clipbox;
vec3_t clipmins, clipmaxs;
//
// brush model
//
int firstmodelsurface, nummodelsurfaces;
int numsubmodels;
dmodel_t *submodels;
int numplanes;
mplane_t *planes;
int numleafs; // number of visible leafs, not counting 0
mleaf_t *leafs;
int numvertexes;
mvertex_t *vertexes;
int numedges;
medge_t *edges;
int numnodes;
int firstnode;
mnode_t *nodes;
int numtexinfo;
mtexinfo_t *texinfo;
int numsurfaces;
msurface_t *surfaces;
int numsurfedges;
int *surfedges;
int nummarksurfaces;
msurface_t **marksurfaces;
dvis_t *vis;
byte *lightdata;
// for alias models and sprites
image_t *skins[MAX_MD2SKINS];
void *extradata;
int extradatasize;
} model_t;
//============================================================================
void Mod_Init (void);
void Mod_ClearAll (void);
model_t *Mod_ForName (char *name, qboolean crash);
void *Mod_Extradata (model_t *mod); // handles caching
void Mod_TouchModel (char *name);
mleaf_t *Mod_PointInLeaf (float *p, model_t *model);
byte *Mod_ClusterPVS (int cluster, model_t *model);
void Mod_Modellist_f (void);
void Mod_FreeAll (void);
void Mod_Free (model_t *mod);
extern int registration_sequence;
#endif // __MODEL__
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