ref: 9084a389eba9cd1089560473306b57b418730ef5
dir: /qw/model.c/
// models.c -- model loading and caching
// models are the only shared resource between a client and server running
// on the same machine.
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
model_t *loadmodel;
char loadname[32]; // for hunk tags
void Mod_LoadSpriteModel (model_t *mod, void *buffer);
void Mod_LoadBrushModel (model_t *mod, void *buffer);
void Mod_LoadAliasModel (model_t *mod, void *buffer);
model_t *Mod_LoadModel (model_t *mod, qboolean crash);
byte mod_novis[MAX_MAP_LEAFS/8];
#define MAX_MOD_KNOWN 256
model_t mod_known[MAX_MOD_KNOWN];
int mod_numknown;
/*
===============
Mod_Init
===============
*/
void Mod_Init (void)
{
memset (mod_novis, 0xff, sizeof(mod_novis));
}
/*
===============
Mod_Init
Caches the data if needed
===============
*/
void *Mod_Extradata (model_t *mod)
{
void *r;
r = Cache_Check (&mod->cache);
if (r)
return r;
Mod_LoadModel (mod, true);
if (!mod->cache.data)
Sys_Error ("Mod_Extradata: caching failed");
return mod->cache.data;
}
/*
===============
Mod_PointInLeaf
===============
*/
mleaf_t *Mod_PointInLeaf (vec3_t p, model_t *model)
{
mnode_t *node;
float d;
mplane_t *plane;
if (!model || !model->nodes)
Sys_Error ("Mod_PointInLeaf: bad model");
node = model->nodes;
while (1)
{
if (node->contents < 0)
return (mleaf_t *)node;
plane = node->plane;
d = DotProduct (p,plane->normal) - plane->dist;
if (d > 0)
node = node->children[0];
else
node = node->children[1];
}
}
/*
===================
Mod_DecompressVis
===================
*/
byte *Mod_DecompressVis (byte *in, model_t *model)
{
static byte decompressed[MAX_MAP_LEAFS/8];
int c;
byte *out;
int row;
row = (model->numleafs+7)>>3;
out = decompressed;
/*
memcpy (out, in, row);
*/
if (!in)
{ // no vis info, so make all visible
while (row)
{
*out++ = 0xff;
row--;
}
return decompressed;
}
do
{
if (*in)
{
*out++ = *in++;
continue;
}
c = in[1];
in += 2;
while (c)
{
*out++ = 0;
c--;
}
} while (out - decompressed < row);
return decompressed;
}
byte *Mod_LeafPVS (mleaf_t *leaf, model_t *model)
{
if (leaf == model->leafs)
return mod_novis;
return Mod_DecompressVis (leaf->compressed_vis, model);
}
/*
===================
Mod_ClearAll
===================
*/
void Mod_ClearAll (void)
{
int i;
model_t *mod;
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
if (mod->type != mod_alias)
mod->needload = true;
}
/*
==================
Mod_FindName
==================
*/
model_t *Mod_FindName (char *name)
{
int i;
model_t *mod;
if (!name[0])
Sys_Error ("Mod_ForName: NULL name");
//
// search the currently loaded models
//
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
if (!strcmp (mod->name, name) )
break;
if (i == mod_numknown)
{
if (mod_numknown == MAX_MOD_KNOWN)
Sys_Error ("mod_numknown == MAX_MOD_KNOWN");
strcpy (mod->name, name);
mod->needload = true;
mod_numknown++;
}
return mod;
}
/*
==================
Mod_TouchModel
==================
*/
void Mod_TouchModel (char *name)
{
model_t *mod;
mod = Mod_FindName (name);
if (!mod->needload)
{
if (mod->type == mod_alias)
Cache_Check (&mod->cache);
}
}
/*
==================
Mod_LoadModel
Loads a model into the cache
==================
*/
model_t *Mod_LoadModel (model_t *mod, qboolean crash)
{
void *d;
unsigned *buf;
byte stackbuf[1024]; // avoid dirtying the cache heap
if (!mod->needload)
{
if (mod->type == mod_alias)
{
d = Cache_Check (&mod->cache);
if (d)
return mod;
}
else
return mod; // not cached at all
}
//
// because the world is so huge, load it one piece at a time
//
if (!crash)
{
}
//
// load the file
//
buf = (unsigned *)COM_LoadStackFile (mod->name, stackbuf, sizeof(stackbuf));
if (!buf)
{
if (crash)
Sys_Error ("Mod_NumForName: %s not found", mod->name);
return NULL;
}
//
// allocate a new model
//
COM_FileBase (mod->name, loadname);
loadmodel = mod;
//
// fill it in
//
// call the apropriate loader
mod->needload = false;
switch (LittleLong(*(unsigned *)buf))
{
case IDPOLYHEADER:
Mod_LoadAliasModel (mod, buf);
break;
case IDSPRITEHEADER:
Mod_LoadSpriteModel (mod, buf);
break;
default:
Mod_LoadBrushModel (mod, buf);
break;
}
return mod;
}
/*
==================
Mod_ForName
Loads in a model for the given name
==================
*/
model_t *Mod_ForName (char *name, qboolean crash)
{
model_t *mod;
mod = Mod_FindName (name);
return Mod_LoadModel (mod, crash);
}
/*
===============================================================================
BRUSHMODEL LOADING
===============================================================================
*/
byte *mod_base;
/*
=================
Mod_LoadTextures
=================
*/
void Mod_LoadTextures (lump_t *l)
{
int i, j, pixels, num, max, altmax;
miptex_t *mt;
texture_t *tx, *tx2;
texture_t *anims[10];
texture_t *altanims[10];
dmiptexlump_t *m;
if (!l->filelen)
{
loadmodel->textures = NULL;
return;
}
m = (dmiptexlump_t *)(mod_base + l->fileofs);
m->nummiptex = LittleLong (m->nummiptex);
loadmodel->numtextures = m->nummiptex;
loadmodel->textures = Hunk_AllocName (m->nummiptex * sizeof(*loadmodel->textures) , loadname);
for (i=0 ; i<m->nummiptex ; i++)
{
m->dataofs[i] = LittleLong(m->dataofs[i]);
if (m->dataofs[i] == -1)
continue;
mt = (miptex_t *)((byte *)m + m->dataofs[i]);
mt->width = LittleLong (mt->width);
mt->height = LittleLong (mt->height);
for (j=0 ; j<MIPLEVELS ; j++)
mt->offsets[j] = LittleLong (mt->offsets[j]);
if ( (mt->width & 15) || (mt->height & 15) )
Sys_Error ("Texture %s is not 16 aligned", mt->name);
pixels = mt->width*mt->height/64*85;
tx = Hunk_AllocName (sizeof(texture_t) +pixels, loadname );
loadmodel->textures[i] = tx;
memcpy (tx->name, mt->name, sizeof(tx->name));
tx->width = mt->width;
tx->height = mt->height;
for (j=0 ; j<MIPLEVELS ; j++)
tx->offsets[j] = mt->offsets[j] + sizeof(texture_t) - sizeof(miptex_t);
// the pixels immediately follow the structures
memcpy ( tx+1, mt+1, pixels);
if (!strncmp(mt->name,"sky",3))
R_InitSky (tx);
}
//
// sequence the animations
//
for (i=0 ; i<m->nummiptex ; i++)
{
tx = loadmodel->textures[i];
if (!tx || tx->name[0] != '+')
continue;
if (tx->anim_next)
continue; // allready sequenced
// find the number of frames in the animation
memset (anims, 0, sizeof(anims));
memset (altanims, 0, sizeof(altanims));
max = tx->name[1];
altmax = 0;
if (max >= 'a' && max <= 'z')
max -= 'a' - 'A';
if (max >= '0' && max <= '9')
{
max -= '0';
altmax = 0;
anims[max] = tx;
max++;
}
else if (max >= 'A' && max <= 'J')
{
altmax = max - 'A';
max = 0;
altanims[altmax] = tx;
altmax++;
}
else
Sys_Error ("Bad animating texture %s", tx->name);
for (j=i+1 ; j<m->nummiptex ; j++)
{
tx2 = loadmodel->textures[j];
if (!tx2 || tx2->name[0] != '+')
continue;
if (strcmp (tx2->name+2, tx->name+2))
continue;
num = tx2->name[1];
if (num >= 'a' && num <= 'z')
num -= 'a' - 'A';
if (num >= '0' && num <= '9')
{
num -= '0';
anims[num] = tx2;
if (num+1 > max)
max = num + 1;
}
else if (num >= 'A' && num <= 'J')
{
num = num - 'A';
altanims[num] = tx2;
if (num+1 > altmax)
altmax = num+1;
}
else
Sys_Error ("Bad animating texture %s", tx->name);
}
#define ANIM_CYCLE 2
// link them all together
for (j=0 ; j<max ; j++)
{
tx2 = anims[j];
if (!tx2)
Sys_Error ("Missing frame %d of %s",j, tx->name);
tx2->anim_total = max * ANIM_CYCLE;
tx2->anim_min = j * ANIM_CYCLE;
tx2->anim_max = (j+1) * ANIM_CYCLE;
tx2->anim_next = anims[ (j+1)%max ];
if (altmax)
tx2->alternate_anims = altanims[0];
}
for (j=0 ; j<altmax ; j++)
{
tx2 = altanims[j];
if (!tx2)
Sys_Error ("Missing frame %d of %s",j, tx->name);
tx2->anim_total = altmax * ANIM_CYCLE;
tx2->anim_min = j * ANIM_CYCLE;
tx2->anim_max = (j+1) * ANIM_CYCLE;
tx2->anim_next = altanims[ (j+1)%altmax ];
if (max)
tx2->alternate_anims = anims[0];
}
}
}
/*
=================
Mod_LoadLighting
=================
*/
void Mod_LoadLighting (lump_t *l)
{
if (!l->filelen)
{
loadmodel->lightdata = NULL;
return;
}
loadmodel->lightdata = Hunk_AllocName ( l->filelen, loadname);
memcpy (loadmodel->lightdata, mod_base + l->fileofs, l->filelen);
}
/*
=================
Mod_LoadVisibility
=================
*/
void Mod_LoadVisibility (lump_t *l)
{
if (!l->filelen)
{
loadmodel->visdata = NULL;
return;
}
loadmodel->visdata = Hunk_AllocName ( l->filelen, loadname);
memcpy (loadmodel->visdata, mod_base + l->fileofs, l->filelen);
}
/*
=================
Mod_LoadEntities
=================
*/
void Mod_LoadEntities (lump_t *l)
{
if (!l->filelen)
{
loadmodel->entities = NULL;
return;
}
loadmodel->entities = Hunk_AllocName ( l->filelen, loadname);
memcpy (loadmodel->entities, mod_base + l->fileofs, l->filelen);
}
/*
=================
Mod_LoadVertexes
=================
*/
void Mod_LoadVertexes (lump_t *l)
{
dvertex_t *in;
mvertex_t *out;
int i, count;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->vertexes = out;
loadmodel->numvertexes = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
out->position[0] = LittleFloat (in->point[0]);
out->position[1] = LittleFloat (in->point[1]);
out->position[2] = LittleFloat (in->point[2]);
}
}
/*
=================
Mod_LoadSubmodels
=================
*/
void Mod_LoadSubmodels (lump_t *l)
{
dmodel_t *in;
dmodel_t *out;
int i, j, count;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->submodels = out;
loadmodel->numsubmodels = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
for (j=0 ; j<3 ; j++)
{ // spread the mins / maxs by a pixel
out->mins[j] = LittleFloat (in->mins[j]) - 1;
out->maxs[j] = LittleFloat (in->maxs[j]) + 1;
out->origin[j] = LittleFloat (in->origin[j]);
}
for (j=0 ; j<MAX_MAP_HULLS ; j++)
out->headnode[j] = LittleLong (in->headnode[j]);
out->visleafs = LittleLong (in->visleafs);
out->firstface = LittleLong (in->firstface);
out->numfaces = LittleLong (in->numfaces);
}
}
/*
=================
Mod_LoadEdges
=================
*/
void Mod_LoadEdges (lump_t *l)
{
dedge_t *in;
medge_t *out;
int i, count;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( (count + 1) * sizeof(*out), loadname);
loadmodel->edges = out;
loadmodel->numedges = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
out->v[0] = (unsigned short)LittleShort(in->v[0]);
out->v[1] = (unsigned short)LittleShort(in->v[1]);
}
}
/*
=================
Mod_LoadTexinfo
=================
*/
void Mod_LoadTexinfo (lump_t *l)
{
texinfo_t *in;
mtexinfo_t *out;
int i, j, count;
int miptex;
float len1, len2;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->texinfo = out;
loadmodel->numtexinfo = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
for (j=0 ; j<8 ; j++)
out->vecs[0][j] = LittleFloat (in->vecs[0][j]);
len1 = Length (out->vecs[0]);
len2 = Length (out->vecs[1]);
len1 = (len1 + len2)/2;
if (len1 < 0.32)
out->mipadjust = 4;
else if (len1 < 0.49)
out->mipadjust = 3;
else if (len1 < 0.99)
out->mipadjust = 2;
else
out->mipadjust = 1;
/*
if (len1 + len2 < 0.001)
out->mipadjust = 1; // don't crash
else
out->mipadjust = 1 / floor( (len1+len2)/2 + 0.1 );
*/
miptex = LittleLong (in->miptex);
out->flags = LittleLong (in->flags);
if (!loadmodel->textures)
{
out->texture = r_notexture_mip; // checkerboard texture
out->flags = 0;
}
else
{
if (miptex >= loadmodel->numtextures)
Sys_Error ("miptex >= loadmodel->numtextures");
out->texture = loadmodel->textures[miptex];
if (!out->texture)
{
out->texture = r_notexture_mip; // texture not found
out->flags = 0;
}
}
}
}
/*
================
CalcSurfaceExtents
Fills in s->texturemins[] and s->extents[]
================
*/
void CalcSurfaceExtents (msurface_t *s)
{
float mins[2], maxs[2], val;
int i,j, e;
mvertex_t *v;
mtexinfo_t *tex;
int bmins[2], bmaxs[2];
mins[0] = mins[1] = 999999;
maxs[0] = maxs[1] = -99999;
tex = s->texinfo;
for (i=0 ; i<s->numedges ; i++)
{
e = loadmodel->surfedges[s->firstedge+i];
if (e >= 0)
v = &loadmodel->vertexes[loadmodel->edges[e].v[0]];
else
v = &loadmodel->vertexes[loadmodel->edges[-e].v[1]];
for (j=0 ; j<2 ; j++)
{
val = v->position[0] * tex->vecs[j][0] +
v->position[1] * tex->vecs[j][1] +
v->position[2] * tex->vecs[j][2] +
tex->vecs[j][3];
if (val < mins[j])
mins[j] = val;
if (val > maxs[j])
maxs[j] = val;
}
}
for (i=0 ; i<2 ; i++)
{
bmins[i] = floor(mins[i]/16);
bmaxs[i] = ceil(maxs[i]/16);
s->texturemins[i] = bmins[i] * 16;
s->extents[i] = (bmaxs[i] - bmins[i]) * 16;
if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 256)
Sys_Error ("Bad surface extents");
}
}
/*
=================
Mod_LoadFaces
=================
*/
void Mod_LoadFaces (lump_t *l)
{
dface_t *in;
msurface_t *out;
int i, count, surfnum;
int planenum, side;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->surfaces = out;
loadmodel->numsurfaces = count;
for ( surfnum=0 ; surfnum<count ; surfnum++, in++, out++)
{
out->firstedge = LittleLong(in->firstedge);
out->numedges = LittleShort(in->numedges);
out->flags = 0;
planenum = LittleShort(in->planenum);
side = LittleShort(in->side);
if (side)
out->flags |= SURF_PLANEBACK;
out->plane = loadmodel->planes + planenum;
out->texinfo = loadmodel->texinfo + LittleShort (in->texinfo);
CalcSurfaceExtents (out);
// lighting info
for (i=0 ; i<MAXLIGHTMAPS ; i++)
out->styles[i] = in->styles[i];
i = LittleLong(in->lightofs);
if (i == -1)
out->samples = NULL;
else
out->samples = loadmodel->lightdata + i;
// set the drawing flags flag
if (!strncmp(out->texinfo->texture->name,"sky",3)) // sky
{
out->flags |= (SURF_DRAWSKY | SURF_DRAWTILED);
continue;
}
if (!strncmp(out->texinfo->texture->name,"*",1)) // turbulent
{
out->flags |= (SURF_DRAWTURB | SURF_DRAWTILED);
for (i=0 ; i<2 ; i++)
{
out->extents[i] = 16384;
out->texturemins[i] = -8192;
}
continue;
}
}
}
/*
=================
Mod_SetParent
=================
*/
void Mod_SetParent (mnode_t *node, mnode_t *parent)
{
node->parent = parent;
if (node->contents < 0)
return;
Mod_SetParent (node->children[0], node);
Mod_SetParent (node->children[1], node);
}
/*
=================
Mod_LoadNodes
=================
*/
void Mod_LoadNodes (lump_t *l)
{
int i, j, count, p;
dnode_t *in;
mnode_t *out;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->nodes = out;
loadmodel->numnodes = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
for (j=0 ; j<3 ; j++)
{
out->minmaxs[j] = LittleShort (in->mins[j]);
out->minmaxs[3+j] = LittleShort (in->maxs[j]);
}
p = LittleLong(in->planenum);
out->plane = loadmodel->planes + p;
out->firstsurface = LittleShort (in->firstface);
out->numsurfaces = LittleShort (in->numfaces);
for (j=0 ; j<2 ; j++)
{
p = LittleShort (in->children[j]);
if (p >= 0)
out->children[j] = loadmodel->nodes + p;
else
out->children[j] = (mnode_t *)(loadmodel->leafs + (-1 - p));
}
}
Mod_SetParent (loadmodel->nodes, NULL); // sets nodes and leafs
}
/*
=================
Mod_LoadLeafs
=================
*/
void Mod_LoadLeafs (lump_t *l)
{
dleaf_t *in;
mleaf_t *out;
int i, j, count, p;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->leafs = out;
loadmodel->numleafs = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
for (j=0 ; j<3 ; j++)
{
out->minmaxs[j] = LittleShort (in->mins[j]);
out->minmaxs[3+j] = LittleShort (in->maxs[j]);
}
p = LittleLong(in->contents);
out->contents = p;
out->firstmarksurface = loadmodel->marksurfaces +
LittleShort(in->firstmarksurface);
out->nummarksurfaces = LittleShort(in->nummarksurfaces);
p = LittleLong(in->visofs);
if (p == -1)
out->compressed_vis = NULL;
else
out->compressed_vis = loadmodel->visdata + p;
out->efrags = NULL;
for (j=0 ; j<4 ; j++)
out->ambient_sound_level[j] = in->ambient_level[j];
}
}
/*
=================
Mod_LoadClipnodes
=================
*/
void Mod_LoadClipnodes (lump_t *l)
{
dclipnode_t *in, *out;
int i, count;
hull_t *hull;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->clipnodes = out;
loadmodel->numclipnodes = count;
hull = &loadmodel->hulls[1];
hull->clipnodes = out;
hull->firstclipnode = 0;
hull->lastclipnode = count-1;
hull->planes = loadmodel->planes;
hull->clip_mins[0] = -16;
hull->clip_mins[1] = -16;
hull->clip_mins[2] = -24;
hull->clip_maxs[0] = 16;
hull->clip_maxs[1] = 16;
hull->clip_maxs[2] = 32;
hull = &loadmodel->hulls[2];
hull->clipnodes = out;
hull->firstclipnode = 0;
hull->lastclipnode = count-1;
hull->planes = loadmodel->planes;
hull->clip_mins[0] = -32;
hull->clip_mins[1] = -32;
hull->clip_mins[2] = -24;
hull->clip_maxs[0] = 32;
hull->clip_maxs[1] = 32;
hull->clip_maxs[2] = 64;
for (i=0 ; i<count ; i++, out++, in++)
{
out->planenum = LittleLong(in->planenum);
out->children[0] = LittleShort(in->children[0]);
out->children[1] = LittleShort(in->children[1]);
}
}
/*
=================
Mod_MakeHull0
Deplicate the drawing hull structure as a clipping hull
=================
*/
void Mod_MakeHull0 (void)
{
mnode_t *in, *child;
dclipnode_t *out;
int i, j, count;
hull_t *hull;
hull = &loadmodel->hulls[0];
in = loadmodel->nodes;
count = loadmodel->numnodes;
out = Hunk_AllocName ( count*sizeof(*out), loadname);
hull->clipnodes = out;
hull->firstclipnode = 0;
hull->lastclipnode = count-1;
hull->planes = loadmodel->planes;
for (i=0 ; i<count ; i++, out++, in++)
{
out->planenum = in->plane - loadmodel->planes;
for (j=0 ; j<2 ; j++)
{
child = in->children[j];
if (child->contents < 0)
out->children[j] = child->contents;
else
out->children[j] = child - loadmodel->nodes;
}
}
}
/*
=================
Mod_LoadMarksurfaces
=================
*/
void Mod_LoadMarksurfaces (lump_t *l)
{
int i, j, count;
short *in;
msurface_t **out;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->marksurfaces = out;
loadmodel->nummarksurfaces = count;
for ( i=0 ; i<count ; i++)
{
j = LittleShort(in[i]);
if (j >= loadmodel->numsurfaces)
Sys_Error ("Mod_ParseMarksurfaces: bad surface number");
out[i] = loadmodel->surfaces + j;
}
}
/*
=================
Mod_LoadSurfedges
=================
*/
void Mod_LoadSurfedges (lump_t *l)
{
int i, count;
int *in, *out;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*sizeof(*out), loadname);
loadmodel->surfedges = out;
loadmodel->numsurfedges = count;
for ( i=0 ; i<count ; i++)
out[i] = LittleLong (in[i]);
}
/*
=================
Mod_LoadPlanes
=================
*/
void Mod_LoadPlanes (lump_t *l)
{
int i, j;
mplane_t *out;
dplane_t *in;
int count;
int bits;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
Sys_Error ("MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_AllocName ( count*2*sizeof(*out), loadname);
loadmodel->planes = out;
loadmodel->numplanes = count;
for ( i=0 ; i<count ; i++, in++, out++)
{
bits = 0;
for (j=0 ; j<3 ; j++)
{
out->normal[j] = LittleFloat (in->normal[j]);
if (out->normal[j] < 0)
bits |= 1<<j;
}
out->dist = LittleFloat (in->dist);
out->type = LittleLong (in->type);
out->signbits = bits;
}
}
/*
=================
RadiusFromBounds
=================
*/
float RadiusFromBounds (vec3_t mins, vec3_t maxs)
{
int i;
vec3_t corner;
for (i=0 ; i<3 ; i++)
{
corner[i] = fabs(mins[i]) > fabs(maxs[i]) ? fabs(mins[i]) : fabs(maxs[i]);
}
return Length (corner);
}
/*
=================
Mod_LoadBrushModel
=================
*/
void Mod_LoadBrushModel (model_t *mod, void *buffer)
{
int i, j;
dheader_t *header;
dmodel_t *bm;
loadmodel->type = mod_brush;
header = (dheader_t *)buffer;
i = LittleLong (header->version);
if (i != BSPVERSION)
Sys_Error ("Mod_LoadBrushModel: %s has wrong version number (%d should be %d)", mod->name, i, BSPVERSION);
// swap all the lumps
mod_base = (byte *)header;
for (i=0 ; i<sizeof(dheader_t)/4 ; i++)
((int *)header)[i] = LittleLong ( ((int *)header)[i]);
mod->checksum = 0;
mod->checksum2 = 0;
// checksum all of the map, except for entities
for (i = 0; i < HEADER_LUMPS; i++) {
if (i == LUMP_ENTITIES)
continue;
mod->checksum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs,
header->lumps[i].filelen);
if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
continue;
mod->checksum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs,
header->lumps[i].filelen);
}
// load into heap
Mod_LoadVertexes (&header->lumps[LUMP_VERTEXES]);
Mod_LoadEdges (&header->lumps[LUMP_EDGES]);
Mod_LoadSurfedges (&header->lumps[LUMP_SURFEDGES]);
Mod_LoadTextures (&header->lumps[LUMP_TEXTURES]);
Mod_LoadLighting (&header->lumps[LUMP_LIGHTING]);
Mod_LoadPlanes (&header->lumps[LUMP_PLANES]);
Mod_LoadTexinfo (&header->lumps[LUMP_TEXINFO]);
Mod_LoadFaces (&header->lumps[LUMP_FACES]);
Mod_LoadMarksurfaces (&header->lumps[LUMP_MARKSURFACES]);
Mod_LoadVisibility (&header->lumps[LUMP_VISIBILITY]);
Mod_LoadLeafs (&header->lumps[LUMP_LEAFS]);
Mod_LoadNodes (&header->lumps[LUMP_NODES]);
Mod_LoadClipnodes (&header->lumps[LUMP_CLIPNODES]);
Mod_LoadEntities (&header->lumps[LUMP_ENTITIES]);
Mod_LoadSubmodels (&header->lumps[LUMP_MODELS]);
Mod_MakeHull0 ();
mod->numframes = 2; // regular and alternate animation
//
// set up the submodels (FIXME: this is confusing)
//
for (i=0 ; i<mod->numsubmodels ; i++)
{
bm = &mod->submodels[i];
mod->hulls[0].firstclipnode = bm->headnode[0];
for (j=1 ; j<MAX_MAP_HULLS ; j++)
{
mod->hulls[j].firstclipnode = bm->headnode[j];
mod->hulls[j].lastclipnode = mod->numclipnodes-1;
}
mod->firstmodelsurface = bm->firstface;
mod->nummodelsurfaces = bm->numfaces;
mod->radius = RadiusFromBounds (mod->mins, mod->maxs);
VectorCopy (bm->maxs, mod->maxs);
VectorCopy (bm->mins, mod->mins);
mod->numleafs = bm->visleafs;
if (i < mod->numsubmodels-1)
{ // duplicate the basic information
char name[10];
sprintf (name, "*%d", i+1);
loadmodel = Mod_FindName (name);
*loadmodel = *mod;
strcpy (loadmodel->name, name);
mod = loadmodel;
}
}
}
/*
==============================================================================
ALIAS MODELS
==============================================================================
*/
/*
=================
Mod_LoadAliasFrame
=================
*/
void * Mod_LoadAliasFrame (void * pin, int *pframeindex, int numv,
trivertx_t *pbboxmin, trivertx_t *pbboxmax, aliashdr_t *pheader, char *name)
{
trivertx_t *pframe, *pinframe;
int i, j;
daliasframe_t *pdaliasframe;
pdaliasframe = (daliasframe_t *)pin;
strcpy (name, pdaliasframe->name);
for (i=0 ; i<3 ; i++)
{
// these are byte values, so we don't have to worry about
// endianness
pbboxmin->v[i] = pdaliasframe->bboxmin.v[i];
pbboxmax->v[i] = pdaliasframe->bboxmax.v[i];
}
pinframe = (trivertx_t *)(pdaliasframe + 1);
pframe = Hunk_AllocName (numv * sizeof(*pframe), loadname);
*pframeindex = (byte *)pframe - (byte *)pheader;
for (j=0 ; j<numv ; j++)
{
int k;
// these are all byte values, so no need to deal with endianness
pframe[j].lightnormalindex = pinframe[j].lightnormalindex;
for (k=0 ; k<3 ; k++)
{
pframe[j].v[k] = pinframe[j].v[k];
}
}
pinframe += numv;
return (void *)pinframe;
}
/*
=================
Mod_LoadAliasGroup
=================
*/
void * Mod_LoadAliasGroup (void * pin, int *pframeindex, int numv,
trivertx_t *pbboxmin, trivertx_t *pbboxmax, aliashdr_t *pheader, char *name)
{
daliasgroup_t *pingroup;
maliasgroup_t *paliasgroup;
int i, numframes;
daliasinterval_t *pin_intervals;
float *poutintervals;
void *ptemp;
pingroup = (daliasgroup_t *)pin;
numframes = LittleLong (pingroup->numframes);
paliasgroup = Hunk_AllocName (sizeof (maliasgroup_t) +
(numframes - 1) * sizeof (paliasgroup->frames[0]), loadname);
paliasgroup->numframes = numframes;
for (i=0 ; i<3 ; i++)
{
// these are byte values, so we don't have to worry about endianness
pbboxmin->v[i] = pingroup->bboxmin.v[i];
pbboxmax->v[i] = pingroup->bboxmax.v[i];
}
*pframeindex = (byte *)paliasgroup - (byte *)pheader;
pin_intervals = (daliasinterval_t *)(pingroup + 1);
poutintervals = Hunk_AllocName (numframes * sizeof (float), loadname);
paliasgroup->intervals = (byte *)poutintervals - (byte *)pheader;
for (i=0 ; i<numframes ; i++)
{
*poutintervals = LittleFloat (pin_intervals->interval);
if (*poutintervals <= 0.0)
Sys_Error ("Mod_LoadAliasGroup: interval<=0");
poutintervals++;
pin_intervals++;
}
ptemp = (void *)pin_intervals;
for (i=0 ; i<numframes ; i++)
{
ptemp = Mod_LoadAliasFrame (ptemp,
&paliasgroup->frames[i].frame,
numv,
&paliasgroup->frames[i].bboxmin,
&paliasgroup->frames[i].bboxmax,
pheader, name);
}
return ptemp;
}
/*
=================
Mod_LoadAliasSkin
=================
*/
void * Mod_LoadAliasSkin (void * pin, int *pskinindex, int skinsize,
aliashdr_t *pheader)
{
byte *pskin, *pinskin;
pskin = Hunk_AllocName (skinsize * r_pixbytes, loadname);
pinskin = (byte *)pin;
*pskinindex = (byte *)pskin - (byte *)pheader;
memcpy (pskin, pinskin, skinsize);
pinskin += skinsize;
return ((void *)pinskin);
}
/*
=================
Mod_LoadAliasSkinGroup
=================
*/
void * Mod_LoadAliasSkinGroup (void * pin, int *pskinindex, int skinsize,
aliashdr_t *pheader)
{
daliasskingroup_t *pinskingroup;
maliasskingroup_t *paliasskingroup;
int i, numskins;
daliasskininterval_t *pinskinintervals;
float *poutskinintervals;
void *ptemp;
pinskingroup = (daliasskingroup_t *)pin;
numskins = LittleLong (pinskingroup->numskins);
paliasskingroup = Hunk_AllocName (sizeof (maliasskingroup_t) +
(numskins - 1) * sizeof (paliasskingroup->skindescs[0]),
loadname);
paliasskingroup->numskins = numskins;
*pskinindex = (byte *)paliasskingroup - (byte *)pheader;
pinskinintervals = (daliasskininterval_t *)(pinskingroup + 1);
poutskinintervals = Hunk_AllocName (numskins * sizeof (float),loadname);
paliasskingroup->intervals = (byte *)poutskinintervals - (byte *)pheader;
for (i=0 ; i<numskins ; i++)
{
*poutskinintervals = LittleFloat (pinskinintervals->interval);
if (*poutskinintervals <= 0)
Sys_Error ("Mod_LoadAliasSkinGroup: interval<=0");
poutskinintervals++;
pinskinintervals++;
}
ptemp = (void *)pinskinintervals;
for (i=0 ; i<numskins ; i++)
{
ptemp = Mod_LoadAliasSkin (ptemp,
&paliasskingroup->skindescs[i].skin, skinsize, pheader);
}
return ptemp;
}
/*
=================
Mod_LoadAliasModel
=================
*/
void Mod_LoadAliasModel (model_t *mod, void *buffer)
{
int i;
mdl_t *pmodel, *pinmodel;
stvert_t *pstverts, *pinstverts;
aliashdr_t *pheader;
mtriangle_t *ptri;
dtriangle_t *pintriangles;
int version, numframes, numskins;
int size;
daliasframetype_t *pframetype;
daliasskintype_t *pskintype;
maliasskindesc_t *pskindesc;
int skinsize;
int start, end, total;
if (!strcmp(loadmodel->name, "progs/player.mdl") ||
!strcmp(loadmodel->name, "progs/eyes.mdl")) {
unsigned short crc;
byte *p;
int len;
char st[40];
CRC_Init(&crc);
for (len = com_filesize, p = buffer; len; len--, p++)
CRC_ProcessByte(&crc, *p);
sprintf(st, "%d", (int) crc);
Info_SetValueForKey (cls.userinfo,
!strcmp(loadmodel->name, "progs/player.mdl") ? pmodel_name : emodel_name,
st, MAX_INFO_STRING);
if (cls.state >= ca_connected) {
MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
sprintf(st, "setinfo %s %d",
!strcmp(loadmodel->name, "progs/player.mdl") ? pmodel_name : emodel_name,
(int)crc);
SZ_Print (&cls.netchan.message, st);
}
}
start = Hunk_LowMark ();
pinmodel = (mdl_t *)buffer;
version = LittleLong (pinmodel->version);
if (version != ALIAS_VERSION)
Sys_Error ("%s has wrong version number (%d should be %d)",
mod->name, version, ALIAS_VERSION);
//
// allocate space for a working header, plus all the data except the frames,
// skin and group info
//
size = sizeof (aliashdr_t) + (LittleLong (pinmodel->numframes) - 1) *
sizeof (pheader->frames[0]) +
sizeof (mdl_t) +
LittleLong (pinmodel->numverts) * sizeof (stvert_t) +
LittleLong (pinmodel->numtris) * sizeof (mtriangle_t);
pheader = Hunk_AllocName (size, loadname);
pmodel = (mdl_t *) ((byte *)&pheader[1] +
(LittleLong (pinmodel->numframes) - 1) *
sizeof (pheader->frames[0]));
// mod->cache.data = pheader;
mod->flags = LittleLong (pinmodel->flags);
//
// endian-adjust and copy the data, starting with the alias model header
//
pmodel->boundingradius = LittleFloat (pinmodel->boundingradius);
pmodel->numskins = LittleLong (pinmodel->numskins);
pmodel->skinwidth = LittleLong (pinmodel->skinwidth);
pmodel->skinheight = LittleLong (pinmodel->skinheight);
if (pmodel->skinheight > MAX_LBM_HEIGHT)
Sys_Error ("model %s has a skin taller than %d", mod->name,
MAX_LBM_HEIGHT);
pmodel->numverts = LittleLong (pinmodel->numverts);
if (pmodel->numverts <= 0)
Sys_Error ("model %s has no vertices", mod->name);
if (pmodel->numverts > MAXALIASVERTS)
Sys_Error ("model %s has too many vertices", mod->name);
pmodel->numtris = LittleLong (pinmodel->numtris);
if (pmodel->numtris <= 0)
Sys_Error ("model %s has no triangles", mod->name);
pmodel->numframes = LittleLong (pinmodel->numframes);
pmodel->size = LittleFloat (pinmodel->size) * ALIAS_BASE_SIZE_RATIO;
mod->synctype = LittleLong (pinmodel->synctype);
mod->numframes = pmodel->numframes;
for (i=0 ; i<3 ; i++)
{
pmodel->scale[i] = LittleFloat (pinmodel->scale[i]);
pmodel->scale_origin[i] = LittleFloat (pinmodel->scale_origin[i]);
pmodel->eyeposition[i] = LittleFloat (pinmodel->eyeposition[i]);
}
numskins = pmodel->numskins;
numframes = pmodel->numframes;
if (pmodel->skinwidth & 0x03)
Sys_Error ("Mod_LoadAliasModel: skinwidth not multiple of 4");
pheader->model = (byte *)pmodel - (byte *)pheader;
//
// load the skins
//
skinsize = pmodel->skinheight * pmodel->skinwidth;
if (numskins < 1)
Sys_Error ("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins);
pskintype = (daliasskintype_t *)&pinmodel[1];
pskindesc = Hunk_AllocName (numskins * sizeof (maliasskindesc_t),
loadname);
pheader->skindesc = (byte *)pskindesc - (byte *)pheader;
for (i=0 ; i<numskins ; i++)
{
aliasskintype_t skintype;
skintype = LittleLong (pskintype->type);
pskindesc[i].type = skintype;
if (skintype == ALIAS_SKIN_SINGLE)
{
pskintype = (daliasskintype_t *)
Mod_LoadAliasSkin (pskintype + 1,
&pskindesc[i].skin,
skinsize, pheader);
}
else
{
pskintype = (daliasskintype_t *)
Mod_LoadAliasSkinGroup (pskintype + 1,
&pskindesc[i].skin,
skinsize, pheader);
}
}
//
// set base s and t vertices
//
pstverts = (stvert_t *)&pmodel[1];
pinstverts = (stvert_t *)pskintype;
pheader->stverts = (byte *)pstverts - (byte *)pheader;
for (i=0 ; i<pmodel->numverts ; i++)
{
pstverts[i].onseam = LittleLong (pinstverts[i].onseam);
// put s and t in 16.16 format
pstverts[i].s = LittleLong (pinstverts[i].s) << 16;
pstverts[i].t = LittleLong (pinstverts[i].t) << 16;
}
//
// set up the triangles
//
ptri = (mtriangle_t *)&pstverts[pmodel->numverts];
pintriangles = (dtriangle_t *)&pinstverts[pmodel->numverts];
pheader->triangles = (byte *)ptri - (byte *)pheader;
for (i=0 ; i<pmodel->numtris ; i++)
{
int j;
ptri[i].facesfront = LittleLong (pintriangles[i].facesfront);
for (j=0 ; j<3 ; j++)
{
ptri[i].vertindex[j] =
LittleLong (pintriangles[i].vertindex[j]);
}
}
//
// load the frames
//
if (numframes < 1)
Sys_Error ("Mod_LoadAliasModel: Invalid # of frames: %d\n", numframes);
pframetype = (daliasframetype_t *)&pintriangles[pmodel->numtris];
for (i=0 ; i<numframes ; i++)
{
aliasframetype_t frametype;
frametype = LittleLong (pframetype->type);
pheader->frames[i].type = frametype;
if (frametype == ALIAS_SINGLE)
{
pframetype = (daliasframetype_t *)
Mod_LoadAliasFrame (pframetype + 1,
&pheader->frames[i].frame,
pmodel->numverts,
&pheader->frames[i].bboxmin,
&pheader->frames[i].bboxmax,
pheader, pheader->frames[i].name);
}
else
{
pframetype = (daliasframetype_t *)
Mod_LoadAliasGroup (pframetype + 1,
&pheader->frames[i].frame,
pmodel->numverts,
&pheader->frames[i].bboxmin,
&pheader->frames[i].bboxmax,
pheader, pheader->frames[i].name);
}
}
mod->type = mod_alias;
// FIXME: do this right
mod->mins[0] = mod->mins[1] = mod->mins[2] = -16;
mod->maxs[0] = mod->maxs[1] = mod->maxs[2] = 16;
//
// move the complete, relocatable alias model to the cache
//
end = Hunk_LowMark ();
total = end - start;
Cache_Alloc (&mod->cache, total, loadname);
if (!mod->cache.data)
return;
memcpy (mod->cache.data, pheader, total);
Hunk_FreeToLowMark (start);
}
//=============================================================================
/*
=================
Mod_LoadSpriteFrame
=================
*/
void * Mod_LoadSpriteFrame (void * pin, mspriteframe_t **ppframe)
{
dspriteframe_t *pinframe;
mspriteframe_t *pspriteframe;
int width, height, size, origin[2];
pinframe = (dspriteframe_t *)pin;
width = LittleLong (pinframe->width);
height = LittleLong (pinframe->height);
size = width * height;
pspriteframe = Hunk_AllocName (sizeof (mspriteframe_t) + size*r_pixbytes,
loadname);
memset (pspriteframe, 0, sizeof (mspriteframe_t) + size);
*ppframe = pspriteframe;
pspriteframe->width = width;
pspriteframe->height = height;
origin[0] = LittleLong (pinframe->origin[0]);
origin[1] = LittleLong (pinframe->origin[1]);
pspriteframe->up = origin[1];
pspriteframe->down = origin[1] - height;
pspriteframe->left = origin[0];
pspriteframe->right = width + origin[0];
memcpy (&pspriteframe->pixels[0], (byte *)(pinframe + 1), size);
return (void *)((byte *)pinframe + sizeof (dspriteframe_t) + size);
}
/*
=================
Mod_LoadSpriteGroup
=================
*/
void * Mod_LoadSpriteGroup (void * pin, mspriteframe_t **ppframe)
{
dspritegroup_t *pingroup;
mspritegroup_t *pspritegroup;
int i, numframes;
dspriteinterval_t *pin_intervals;
float *poutintervals;
void *ptemp;
pingroup = (dspritegroup_t *)pin;
numframes = LittleLong (pingroup->numframes);
pspritegroup = Hunk_AllocName (sizeof (mspritegroup_t) +
(numframes - 1) * sizeof (pspritegroup->frames[0]), loadname);
pspritegroup->numframes = numframes;
*ppframe = (mspriteframe_t *)pspritegroup;
pin_intervals = (dspriteinterval_t *)(pingroup + 1);
poutintervals = Hunk_AllocName (numframes * sizeof (float), loadname);
pspritegroup->intervals = poutintervals;
for (i=0 ; i<numframes ; i++)
{
*poutintervals = LittleFloat (pin_intervals->interval);
if (*poutintervals <= 0.0)
Sys_Error ("Mod_LoadSpriteGroup: interval<=0");
poutintervals++;
pin_intervals++;
}
ptemp = (void *)pin_intervals;
for (i=0 ; i<numframes ; i++)
{
ptemp = Mod_LoadSpriteFrame (ptemp, &pspritegroup->frames[i]);
}
return ptemp;
}
/*
=================
Mod_LoadSpriteModel
=================
*/
void Mod_LoadSpriteModel (model_t *mod, void *buffer)
{
int i;
int version;
dsprite_t *pin;
msprite_t *psprite;
int numframes;
int size;
dspriteframetype_t *pframetype;
pin = (dsprite_t *)buffer;
version = LittleLong (pin->version);
if (version != SPRITE_VERSION)
Sys_Error ("%s has wrong version number "
"(%d should be %d)", mod->name, version, SPRITE_VERSION);
numframes = LittleLong (pin->numframes);
size = sizeof (msprite_t) + (numframes - 1) * sizeof (psprite->frames);
psprite = Hunk_AllocName (size, loadname);
mod->cache.data = psprite;
psprite->type = LittleLong (pin->type);
psprite->maxwidth = LittleLong (pin->width);
psprite->maxheight = LittleLong (pin->height);
psprite->beamlength = LittleFloat (pin->beamlength);
mod->synctype = LittleLong (pin->synctype);
psprite->numframes = numframes;
mod->mins[0] = mod->mins[1] = -psprite->maxwidth/2;
mod->maxs[0] = mod->maxs[1] = psprite->maxwidth/2;
mod->mins[2] = -psprite->maxheight/2;
mod->maxs[2] = psprite->maxheight/2;
//
// load the frames
//
if (numframes < 1)
Sys_Error ("Mod_LoadSpriteModel: Invalid # of frames: %d\n", numframes);
mod->numframes = numframes;
pframetype = (dspriteframetype_t *)(pin + 1);
for (i=0 ; i<numframes ; i++)
{
spriteframetype_t frametype;
frametype = LittleLong (pframetype->type);
psprite->frames[i].type = frametype;
if (frametype == SPR_SINGLE)
{
pframetype = (dspriteframetype_t *)
Mod_LoadSpriteFrame (pframetype + 1,
&psprite->frames[i].frameptr);
}
else
{
pframetype = (dspriteframetype_t *)
Mod_LoadSpriteGroup (pframetype + 1,
&psprite->frames[i].frameptr);
}
}
mod->type = mod_sprite;
}
//=============================================================================
/*
================
Mod_Print
================
*/
void Mod_Print (void)
{
int i;
model_t *mod;
Con_Printf ("Cached models:\n");
for (i=0, mod=mod_known ; i < mod_numknown ; i++, mod++)
{
Con_Printf ("%8p : %s\n",mod->cache.data, mod->name);
}
}