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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.
-
- */
-
- /*
-
- 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;
-
- typedef struct
- {
- vec3_t mins, maxs;
- float radius;
- int headnode;
- int visleafs; // not including the solid leaf 0
- int firstface, numfaces;
- } mmodel_t;
-
-
- #define SIDE_FRONT 0
- #define SIDE_BACK 1
- #define SIDE_ON 2
-
-
- #define SURF_PLANEBACK 1
- #define SURF_DRAWTURB 2
-
- #define SurfaceIsTranslucent(surf) ((surf)->texinfo->flags & (SURF_TRANS33|SURF_TRANS66))
- #define SurfaceIsAlphaBlended(surf) ((surf)->texinfo->flags & SURF_TRANS33 && (surf)->texinfo->flags & SURF_TRANS66)
- #define SurfaceHasNoLightmap(surf) ((surf)->texinfo->flags & (SURF_SKY|SURF_TRANS33|SURF_TRANS66|SURF_WARP) && !SurfaceIsAlphaBlended((surf)))
-
- // !!! if this is changed, it must be changed in asm_draw.h too !!!
- typedef struct
- {
- unsigned short v[2];
- } medge_t;
-
- typedef struct mtexinfo_s
- {
- float vecs[2][4];
- int flags;
- int numframes;
- struct mtexinfo_s *next; // animation chain
- image_t *image;
- } mtexinfo_t;
-
- #define VERTEXSIZE 7
-
- typedef struct glpoly_s
- {
- struct glpoly_s *next;
- int numverts;
- float verts[4][VERTEXSIZE]; // variable sized (xyz s1t1 s2t2)
- } glpoly_t;
-
- typedef struct msurface_s
- {
- int visframe; // should be drawn when node is crossed
-
- cplane_t *plane;
- int flags;
-
- int firstedge; // look up in model->surfedges[], negative numbers
- int numedges; // are backwards edges
-
- short texturemins[2];
- short extents[2];
-
- int light_s, light_t; // gl lightmap coordinates
- int dlight_s, dlight_t; // gl lightmap coordinates for dynamic lightmaps
-
- glpoly_t *polys; // multiple if warped
- struct msurface_s *texturechain;
- struct msurface_s *lightmapchain;
-
- mtexinfo_t *texinfo;
-
- // lighting info
- int dlightframe;
- int dlightbits;
-
- int lightmaptexturenum;
- byte styles[MAXLIGHTMAPS];
- float cached_light[MAXLIGHTMAPS]; // values currently used in lightmap
- byte *samples; // [numstyles*surfsize]
- byte *stainsamples;
- } msurface_t;
-
- typedef struct mnode_s
- {
- // common with leaf
- int contents; // -1, to differentiate from leafs
- int visframe; // node needs to be traversed if current
-
- float minmaxs[6]; // for bounding box culling
-
- struct mnode_s *parent;
-
- // node specific
- cplane_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 a negative contents number
- int visframe; // node needs to be traversed if current
-
- float minmaxs[6]; // for bounding box culling
-
- struct mnode_s *parent;
-
- // leaf specific
- int cluster;
- int area;
-
- msurface_t **firstmarksurface;
- int nummarksurfaces;
- } 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;
- float radius;
-
- //
- // brush model
- //
- int firstmodelsurface, nummodelsurfaces;
-
- int numsubmodels;
- mmodel_t *submodels;
-
- int numplanes;
- cplane_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 skins
- image_t *skins[MAX_MD2SKINS];
-
- int extradatasize;
- void *extradata;
- } model_t;
-
- //============================================================================
-
- void Mod_Init (void);
- void Mod_ClearAll (void);
- model_t *Mod_ForName (char *name, qboolean crash);
- mleaf_t *Mod_PointInLeaf (float *p, model_t *model);
- byte *Mod_ClusterPVS (int cluster, model_t *model);
-
- void Mod_Modellist_f (void);
-
- void *Hunk_Begin (int maxsize);
- void *Hunk_Alloc (int size);
- int Hunk_End (void);
- void Hunk_Free (void *base);
-
- void Mod_FreeAll (void);
- void Mod_Free (model_t *mod);
-