383 lines
7.7 KiB
C
383 lines
7.7 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __MODEL__
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#define __MODEL__
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#include "modelgen.h"
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#include "spritegn.h"
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/*
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d*_t structures are on-disk representations
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m*_t structures are in-memory
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*/
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/*
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==============================================================================
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BRUSH MODELS
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==============================================================================
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*/
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//
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// in memory representation
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//
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// !!! if this is changed, it must be changed in asm_draw.h too !!!
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typedef struct
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{
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vec3_t position;
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} mvertex_t;
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#define SIDE_FRONT 0
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#define SIDE_BACK 1
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#define SIDE_ON 2
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// plane_t structure
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// !!! if this is changed, it must be changed in asm_i386.h too !!!
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typedef struct mplane_s
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{
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vec3_t normal;
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float dist;
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byte type; // for texture axis selection and fast side tests
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byte signbits; // signx + signy<<1 + signz<<1
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byte pad[2];
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} mplane_t;
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typedef struct texture_s
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{
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char name[16];
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unsigned width, height;
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int anim_total; // total tenths in sequence ( 0 = no)
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int anim_min, anim_max; // time for this frame min <=time< max
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struct texture_s *anim_next; // in the animation sequence
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struct texture_s *alternate_anims; // bmodels in frmae 1 use these
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unsigned offsets[MIPLEVELS]; // four mip maps stored
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} texture_t;
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#define SURF_PLANEBACK 2
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#define SURF_DRAWSKY 4
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#define SURF_DRAWSPRITE 8
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#define SURF_DRAWTURB 0x10
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#define SURF_DRAWTILED 0x20
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#define SURF_DRAWBACKGROUND 0x40
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// !!! if this is changed, it must be changed in asm_draw.h too !!!
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typedef struct
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{
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unsigned short v[2];
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unsigned int cachededgeoffset;
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} medge_t;
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typedef struct
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{
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float vecs[2][4];
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float mipadjust;
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texture_t *texture;
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int flags;
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} mtexinfo_t;
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typedef struct msurface_s
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{
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int visframe; // should be drawn when node is crossed
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int dlightframe;
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int dlightbits;
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mplane_t *plane;
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int flags;
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int firstedge; // look up in model->surfedges[], negative numbers
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int numedges; // are backwards edges
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// surface generation data
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struct surfcache_s *cachespots[MIPLEVELS];
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short texturemins[2];
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short extents[2];
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mtexinfo_t *texinfo;
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// lighting info
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byte styles[MAXLIGHTMAPS];
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byte *samples; // [numstyles*surfsize]
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} msurface_t;
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typedef struct mnode_s
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{
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// common with leaf
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int contents; // 0, to differentiate from leafs
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int visframe; // node needs to be traversed if current
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short minmaxs[6]; // for bounding box culling
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struct mnode_s *parent;
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// node specific
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mplane_t *plane;
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struct mnode_s *children[2];
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unsigned short firstsurface;
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unsigned short numsurfaces;
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} mnode_t;
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typedef struct mleaf_s
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{
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// common with node
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int contents; // wil be a negative contents number
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int visframe; // node needs to be traversed if current
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short minmaxs[6]; // for bounding box culling
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struct mnode_s *parent;
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// leaf specific
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byte *compressed_vis;
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efrag_t *efrags;
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msurface_t **firstmarksurface;
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int nummarksurfaces;
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int key; // BSP sequence number for leaf's contents
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byte ambient_sound_level[NUM_AMBIENTS];
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} mleaf_t;
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// !!! if this is changed, it must be changed in asm_i386.h too !!!
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typedef struct
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{
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dclipnode_t *clipnodes;
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mplane_t *planes;
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int firstclipnode;
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int lastclipnode;
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vec3_t clip_mins;
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vec3_t clip_maxs;
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} hull_t;
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/*
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==============================================================================
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SPRITE MODELS
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==============================================================================
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*/
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// FIXME: shorten these?
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typedef struct mspriteframe_s
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{
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int width;
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int height;
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void *pcachespot; // remove?
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float up, down, left, right;
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byte pixels[4];
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} mspriteframe_t;
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typedef struct
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{
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int numframes;
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float *intervals;
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mspriteframe_t *frames[1];
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} mspritegroup_t;
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typedef struct
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{
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spriteframetype_t type;
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mspriteframe_t *frameptr;
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} mspriteframedesc_t;
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typedef struct
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{
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int type;
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int maxwidth;
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int maxheight;
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int numframes;
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float beamlength; // remove?
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void *cachespot; // remove?
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mspriteframedesc_t frames[1];
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} msprite_t;
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/*
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==============================================================================
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ALIAS MODELS
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Alias models are position independent, so the cache manager can move them.
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==============================================================================
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*/
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typedef struct
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{
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aliasframetype_t type;
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trivertx_t bboxmin;
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trivertx_t bboxmax;
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int frame;
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char name[16];
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} maliasframedesc_t;
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typedef struct
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{
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aliasskintype_t type;
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void *pcachespot;
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int skin;
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} maliasskindesc_t;
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typedef struct
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{
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trivertx_t bboxmin;
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trivertx_t bboxmax;
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int frame;
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} maliasgroupframedesc_t;
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typedef struct
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{
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int numframes;
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int intervals;
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maliasgroupframedesc_t frames[1];
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} maliasgroup_t;
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typedef struct
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{
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int numskins;
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int intervals;
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maliasskindesc_t skindescs[1];
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} maliasskingroup_t;
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// !!! if this is changed, it must be changed in asm_draw.h too !!!
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typedef struct mtriangle_s {
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int facesfront;
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int vertindex[3];
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} mtriangle_t;
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typedef struct {
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int model;
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int stverts;
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int skindesc;
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int triangles;
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maliasframedesc_t frames[1];
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} aliashdr_t;
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//===================================================================
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//
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// Whole model
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//
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typedef enum {mod_brush, mod_sprite, mod_alias, mod_alias3} modtype_t;
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#define EF_ROCKET 1 // leave a trail
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#define EF_GRENADE 2 // leave a trail
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#define EF_GIB 4 // leave a trail
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#define EF_ROTATE 8 // rotate (bonus items)
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#define EF_TRACER 16 // green split trail
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#define EF_ZOMGIB 32 // small blood trail
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#define EF_TRACER2 64 // orange split trail + rotate
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#define EF_TRACER3 128 // purple trail
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#define EF_FASTVOLUME 256 // PENTA: fast shadow volume generation
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typedef struct model_s
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{
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char name[MAX_QPATH];
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qboolean needload; // bmodels and sprites don't cache normally
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modtype_t type;
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int numframes;
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synctype_t synctype;
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int flags;
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//
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// volume occupied by the model
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//
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vec3_t mins, maxs;
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float radius;
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//
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// brush model
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//
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int firstmodelsurface, nummodelsurfaces;
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int numsubmodels;
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dmodel_t *submodels;
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int numplanes;
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mplane_t *planes;
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int numleafs; // number of visible leafs, not counting 0
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mleaf_t *leafs;
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int numvertexes;
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mvertex_t *vertexes;
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int numedges;
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medge_t *edges;
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int numnodes;
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mnode_t *nodes;
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int numtexinfo;
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mtexinfo_t *texinfo;
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int numsurfaces;
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msurface_t *surfaces;
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int numsurfedges;
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int *surfedges;
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int numclipnodes;
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dclipnode_t *clipnodes;
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int nummarksurfaces;
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msurface_t **marksurfaces;
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hull_t hulls[MAX_MAP_HULLS];
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int numtextures;
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texture_t **textures;
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byte *visdata;
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byte *lightdata;
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char *entities;
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//
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// additional model data
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//
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cache_user_t cache; // only access through Mod_Extradata
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} model_t;
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//============================================================================
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void Mod_Init (void);
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void Mod_ClearAll (void);
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model_t *Mod_ForName (char *name, qboolean crash);
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void *Mod_Extradata (model_t *mod); // handles caching
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void Mod_TouchModel (char *name);
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mleaf_t *Mod_PointInLeaf (float *p, model_t *model);
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byte *Mod_LeafPVS (mleaf_t *leaf, model_t *model);
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#endif // __MODEL__
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