ref: 9e8fb5bd060cfe44303744978ceab8ab23ee5ae6
dir: /ref/r_model.c/
/*
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.
*/
// 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 "../q_shared.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;
// the inline * models from the current map are kept seperate
model_t mod_inline[MAX_MOD_KNOWN];
int registration_sequence;
int modfilelen;
//===============================================================================
/*
================
Mod_Modellist_f
================
*/
void Mod_Modellist_f (void)
{
int i;
model_t *mod;
int total;
total = 0;
ri.Con_Printf (PRINT_ALL,"Loaded models:\n");
for (i=0, mod=mod_known ; i < mod_numknown ; i++, mod++)
{
if (!mod->name[0])
continue;
ri.Con_Printf (PRINT_ALL, "%8i : %s\n",mod->extradatasize, mod->name);
total += mod->extradatasize;
}
ri.Con_Printf (PRINT_ALL, "Total resident: %i\n", total);
}
/*
===============
Mod_Init
===============
*/
void Mod_Init (void)
{
memset (mod_novis, 0xff, sizeof(mod_novis));
}
/*
==================
Mod_ForName
Loads in a model for the given name
==================
*/
model_t *Mod_ForName (char *name, qboolean crash)
{
model_t *mod;
unsigned *buf;
int i;
if (!name[0])
ri.Sys_Error (ERR_DROP,"Mod_ForName: NULL name");
//
// inline models are grabbed only from worldmodel
//
if (name[0] == '*')
{
i = atoi(name+1);
if (i < 1 || !r_worldmodel || i >= r_worldmodel->numsubmodels)
ri.Sys_Error (ERR_DROP, "bad inline model number");
return &mod_inline[i];
}
//
// search the currently loaded models
//
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
if (!strcmp (mod->name, name) )
return mod;
//
// find a free model slot spot
//
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
{
if (!mod->name[0])
break; // free spot
}
if (i == mod_numknown)
{
if (mod_numknown == MAX_MOD_KNOWN)
ri.Sys_Error (ERR_DROP, "mod_numknown == MAX_MOD_KNOWN");
mod_numknown++;
}
strcpy (mod->name, name);
//
// load the file
//
modfilelen = ri.FS_LoadFile (mod->name, (void **)&buf);
if (!buf)
{
if (crash)
ri.Sys_Error (ERR_DROP,"Mod_NumForName: %s not found", mod->name);
memset (mod->name, 0, sizeof(mod->name));
return NULL;
}
loadmodel = mod;
//
// fill it in
//
// call the apropriate loader
switch (LittleLong(*(unsigned *)buf))
{
case IDALIASHEADER:
loadmodel->extradata = Hunk_Begin (0x200000);
Mod_LoadAliasModel (mod, buf);
break;
case IDSPRITEHEADER:
loadmodel->extradata = Hunk_Begin (0x10000);
Mod_LoadSpriteModel (mod, buf);
break;
case IDBSPHEADER:
loadmodel->extradata = Hunk_Begin (0x1000000);
Mod_LoadBrushModel (mod, buf);
break;
default:
ri.Sys_Error (ERR_DROP,"Mod_NumForName: unknown fileid for %s", mod->name);
break;
}
loadmodel->extradatasize = Hunk_End ();
ri.FS_FreeFile (buf);
return mod;
}
/*
===============
Mod_PointInLeaf
===============
*/
mleaf_t *Mod_PointInLeaf (vec3_t p, model_t *model)
{
mnode_t *node;
float d;
mplane_t *plane;
if (!model || !model->nodes)
ri.Sys_Error (ERR_DROP, "Mod_PointInLeaf: bad model");
node = model->nodes;
while (1)
{
if (node->contents != -1)
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->vis->numclusters+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;
}
/*
==============
Mod_ClusterPVS
==============
*/
byte *Mod_ClusterPVS (int cluster, model_t *model)
{
if (cluster == -1 || !model->vis)
return mod_novis;
return Mod_DecompressVis ( (byte *)model->vis + model->vis->bitofs[cluster][DVIS_PVS],
model);
}
/*
===============================================================================
BRUSHMODEL LOADING
===============================================================================
*/
byte *mod_base;
/*
=================
Mod_LoadLighting
Converts the 24 bit lighting down to 8 bit
by taking the brightest component
=================
*/
void Mod_LoadLighting (lump_t *l)
{
int i, size;
byte *in;
if (!l->filelen)
{
loadmodel->lightdata = NULL;
return;
}
size = l->filelen/3;
loadmodel->lightdata = Hunk_Alloc (size);
in = (void *)(mod_base + l->fileofs);
for (i=0 ; i<size ; i++, in+=3)
{
if (in[0] > in[1] && in[0] > in[2])
loadmodel->lightdata[i] = in[0];
else if (in[1] > in[0] && in[1] > in[2])
loadmodel->lightdata[i] = in[1];
else
loadmodel->lightdata[i] = in[2];
}
}
int r_leaftovis[MAX_MAP_LEAFS];
int r_vistoleaf[MAX_MAP_LEAFS];
int r_numvisleafs;
void R_NumberLeafs (mnode_t *node)
{
mleaf_t *leaf;
int leafnum;
if (node->contents != -1)
{
leaf = (mleaf_t *)node;
leafnum = leaf - loadmodel->leafs;
if (leaf->contents & CONTENTS_SOLID)
return;
r_leaftovis[leafnum] = r_numvisleafs;
r_vistoleaf[r_numvisleafs] = leafnum;
r_numvisleafs++;
return;
}
R_NumberLeafs (node->children[0]);
R_NumberLeafs (node->children[1]);
}
/*
=================
Mod_LoadVisibility
=================
*/
void Mod_LoadVisibility (lump_t *l)
{
int i;
if (!l->filelen)
{
loadmodel->vis = NULL;
return;
}
loadmodel->vis = Hunk_Alloc ( l->filelen);
memcpy (loadmodel->vis, mod_base + l->fileofs, l->filelen);
loadmodel->vis->numclusters = LittleLong (loadmodel->vis->numclusters);
for (i=0 ; i<loadmodel->vis->numclusters ; i++)
{
loadmodel->vis->bitofs[i][0] = LittleLong (loadmodel->vis->bitofs[i][0]);
loadmodel->vis->bitofs[i][1] = LittleLong (loadmodel->vis->bitofs[i][1]);
}
}
/*
=================
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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( (count+8)*sizeof(*out)); // extra for skybox
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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( count*sizeof(*out));
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]);
}
out->headnode = LittleLong (in->headnode);
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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( (count + 13) * sizeof(*out)); // extra for skybox
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, *step;
int i, j, count;
float len1, len2;
char name[MAX_QPATH];
int next;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( (count+6)*sizeof(*out)); // extra for skybox
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 = VectorLength (out->vecs[0]);
len2 = VectorLength (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 );
*/
out->flags = LittleLong (in->flags);
next = LittleLong (in->nexttexinfo);
if (next > 0)
out->next = loadmodel->texinfo + next;
Com_sprintf (name, sizeof(name), "textures/%s.wal", in->texture);
out->image = R_FindImage (name, it_wall);
if (!out->image)
{
out->image = r_notexture_mip; // texture not found
out->flags = 0;
}
}
// count animation frames
for (i=0 ; i<count ; i++)
{
out = &loadmodel->texinfo[i];
out->numframes = 1;
for (step = out->next ; step && step != out ; step=step->next)
out->numframes++;
}
}
/*
================
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 (s->extents[i] < 16)
s->extents[i] = 16; // take at least one cache block
if ( !(tex->flags & (SURF_WARP|SURF_SKY)) && s->extents[i] > 256)
ri.Sys_Error (ERR_DROP,"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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( (count+6)*sizeof(*out)); // extra for skybox
loadmodel->surfaces = out;
loadmodel->numsurfaces = count;
for ( surfnum=0 ; surfnum<count ; surfnum++, in++, out++)
{
out->firstedge = LittleLong(in->firstedge);
out->numedges = LittleShort(in->numedges);
if (out->numedges < 3)
ri.Sys_Error (ERR_DROP,"Surface with %s edges", out->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 is converted from 24 bit on disk to 8 bit
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/3;
// set the drawing flags flag
if (!out->texinfo->image)
continue;
if (out->texinfo->flags & SURF_SKY)
{
out->flags |= SURF_DRAWSKY;
continue;
}
if (out->texinfo->flags & SURF_WARP)
{
out->flags |= SURF_DRAWTURB;
for (i=0 ; i<2 ; i++)
{
out->extents[i] = 16384;
out->texturemins[i] = -8192;
}
continue;
}
//==============
//PGM
// this marks flowing surfaces as turbulent, but with the new
// SURF_FLOW flag.
if (out->texinfo->flags & SURF_FLOWING)
{
out->flags |= SURF_DRAWTURB | SURF_FLOW;
for (i=0 ; i<2 ; i++)
{
out->extents[i] = 16384;
out->texturemins[i] = -8192;
}
continue;
}
//PGM
//==============
}
}
/*
=================
Mod_SetParent
=================
*/
void Mod_SetParent (mnode_t *node, mnode_t *parent)
{
node->parent = parent;
if (node->contents != -1)
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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( count*sizeof(*out));
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);
out->contents = CONTENTS_NODE; // differentiate from leafs
for (j=0 ; j<2 ; j++)
{
p = LittleLong (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;
in = (void *)(mod_base + l->fileofs);
if (l->filelen % sizeof(*in))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( count*sizeof(*out));
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]);
}
out->contents = LittleLong(in->contents);
out->cluster = LittleShort(in->cluster);
out->area = LittleShort(in->area);
out->firstmarksurface = loadmodel->marksurfaces +
LittleShort(in->firstleafface);
out->nummarksurfaces = LittleShort(in->numleaffaces);
}
}
/*
=================
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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( count*sizeof(*out));
loadmodel->marksurfaces = out;
loadmodel->nummarksurfaces = count;
for ( i=0 ; i<count ; i++)
{
j = LittleShort(in[i]);
if (j >= loadmodel->numsurfaces)
ri.Sys_Error (ERR_DROP,"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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( (count+24)*sizeof(*out)); // extra for skybox
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))
ri.Sys_Error (ERR_DROP,"MOD_LoadBmodel: funny lump size in %s",loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc ( (count+6)*sizeof(*out)); // extra for skybox
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;
}
}
/*
=================
Mod_LoadBrushModel
=================
*/
void Mod_LoadBrushModel (model_t *mod, void *buffer)
{
int i;
dheader_t *header;
dmodel_t *bm;
loadmodel->type = mod_brush;
if (loadmodel != mod_known)
ri.Sys_Error (ERR_DROP, "Loaded a brush model after the world");
header = (dheader_t *)buffer;
i = LittleLong (header->version);
if (i != BSPVERSION)
ri.Sys_Error (ERR_DROP,"Mod_LoadBrushModel: %s has wrong version number (%i should be %i)", mod->name, i, BSPVERSION);
// swap all the lumps
mod_base = (byte *)header;
for (i=0 ; i<sizeof(dheader_t)/sizeof(int) ; i++)
((int *)header)[i] = LittleLong ( ((int *)header)[i]);
// load into heap
Mod_LoadVertexes (&header->lumps[LUMP_VERTEXES]);
Mod_LoadEdges (&header->lumps[LUMP_EDGES]);
Mod_LoadSurfedges (&header->lumps[LUMP_SURFEDGES]);
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_LEAFFACES]);
Mod_LoadVisibility (&header->lumps[LUMP_VISIBILITY]);
Mod_LoadLeafs (&header->lumps[LUMP_LEAFS]);
Mod_LoadNodes (&header->lumps[LUMP_NODES]);
Mod_LoadSubmodels (&header->lumps[LUMP_MODELS]);
r_numvisleafs = 0;
R_NumberLeafs (loadmodel->nodes);
//
// set up the submodels
//
for (i=0 ; i<mod->numsubmodels ; i++)
{
model_t *starmod;
bm = &mod->submodels[i];
starmod = &mod_inline[i];
*starmod = *loadmodel;
starmod->firstmodelsurface = bm->firstface;
starmod->nummodelsurfaces = bm->numfaces;
starmod->firstnode = bm->headnode;
if (starmod->firstnode >= loadmodel->numnodes)
ri.Sys_Error (ERR_DROP, "Inline model %i has bad firstnode", i);
VectorCopy (bm->maxs, starmod->maxs);
VectorCopy (bm->mins, starmod->mins);
if (i == 0)
*loadmodel = *starmod;
}
R_InitSkyBox ();
}
/*
==============================================================================
ALIAS MODELS
==============================================================================
*/
/*
=================
Mod_LoadAliasModel
=================
*/
void Mod_LoadAliasModel (model_t *mod, void *buffer)
{
int i, j;
dmdl_t *pinmodel, *pheader;
dstvert_t *pinst, *poutst;
dtriangle_t *pintri, *pouttri;
daliasframe_t *pinframe, *poutframe;
int *pincmd, *poutcmd;
int version;
pinmodel = (dmdl_t *)buffer;
version = LittleLong (pinmodel->version);
if (version != ALIAS_VERSION)
ri.Sys_Error (ERR_DROP, "%s has wrong version number (%i should be %i)",
mod->name, version, ALIAS_VERSION);
pheader = Hunk_Alloc (LittleLong(pinmodel->ofs_end));
// byte swap the header fields and sanity check
for (i=0 ; i<sizeof(dmdl_t)/sizeof(int) ; i++)
((int *)pheader)[i] = LittleLong (((int *)buffer)[i]);
if (pheader->skinheight > MAX_LBM_HEIGHT)
ri.Sys_Error (ERR_DROP, "model %s has a skin taller than %d", mod->name,
MAX_LBM_HEIGHT);
if (pheader->num_xyz <= 0)
ri.Sys_Error (ERR_DROP, "model %s has no vertices", mod->name);
if (pheader->num_xyz > MAX_VERTS)
ri.Sys_Error (ERR_DROP, "model %s has too many vertices", mod->name);
if (pheader->num_st <= 0)
ri.Sys_Error (ERR_DROP, "model %s has no st vertices", mod->name);
if (pheader->num_tris <= 0)
ri.Sys_Error (ERR_DROP, "model %s has no triangles", mod->name);
if (pheader->num_frames <= 0)
ri.Sys_Error (ERR_DROP, "model %s has no frames", mod->name);
//
// load base s and t vertices (not used in gl version)
//
pinst = (dstvert_t *) ((byte *)pinmodel + pheader->ofs_st);
poutst = (dstvert_t *) ((byte *)pheader + pheader->ofs_st);
for (i=0 ; i<pheader->num_st ; i++)
{
poutst[i].s = LittleShort (pinst[i].s);
poutst[i].t = LittleShort (pinst[i].t);
}
//
// load triangle lists
//
pintri = (dtriangle_t *) ((byte *)pinmodel + pheader->ofs_tris);
pouttri = (dtriangle_t *) ((byte *)pheader + pheader->ofs_tris);
for (i=0 ; i<pheader->num_tris ; i++)
{
for (j=0 ; j<3 ; j++)
{
pouttri[i].index_xyz[j] = LittleShort (pintri[i].index_xyz[j]);
pouttri[i].index_st[j] = LittleShort (pintri[i].index_st[j]);
}
}
//
// load the frames
//
for (i=0 ; i<pheader->num_frames ; i++)
{
pinframe = (daliasframe_t *) ((byte *)pinmodel
+ pheader->ofs_frames + i * pheader->framesize);
poutframe = (daliasframe_t *) ((byte *)pheader
+ pheader->ofs_frames + i * pheader->framesize);
memcpy (poutframe->name, pinframe->name, sizeof(poutframe->name));
for (j=0 ; j<3 ; j++)
{
poutframe->scale[j] = LittleFloat (pinframe->scale[j]);
poutframe->translate[j] = LittleFloat (pinframe->translate[j]);
}
// verts are all 8 bit, so no swapping needed
memcpy (poutframe->verts, pinframe->verts,
pheader->num_xyz*sizeof(dtrivertx_t));
}
mod->type = mod_alias;
//
// load the glcmds
//
pincmd = (int *) ((byte *)pinmodel + pheader->ofs_glcmds);
poutcmd = (int *) ((byte *)pheader + pheader->ofs_glcmds);
for (i=0 ; i<pheader->num_glcmds ; i++)
poutcmd[i] = LittleLong (pincmd[i]);
// register all skins
memcpy ((char *)pheader + pheader->ofs_skins, (char *)pinmodel + pheader->ofs_skins,
pheader->num_skins*MAX_SKINNAME);
for (i=0 ; i<pheader->num_skins ; i++)
{
mod->skins[i] = R_FindImage ((char *)pheader + pheader->ofs_skins + i*MAX_SKINNAME, it_skin);
}
}
/*
==============================================================================
SPRITE MODELS
==============================================================================
*/
/*
=================
Mod_LoadSpriteModel
=================
*/
void Mod_LoadSpriteModel (model_t *mod, void *buffer)
{
dsprite_t *sprin, *sprout;
int i;
sprin = (dsprite_t *)buffer;
sprout = Hunk_Alloc (modfilelen);
sprout->ident = LittleLong (sprin->ident);
sprout->version = LittleLong (sprin->version);
sprout->numframes = LittleLong (sprin->numframes);
if (sprout->version != SPRITE_VERSION)
ri.Sys_Error (ERR_DROP, "%s has wrong version number (%i should be %i)",
mod->name, sprout->version, SPRITE_VERSION);
if (sprout->numframes > MAX_MD2SKINS)
ri.Sys_Error (ERR_DROP, "%s has too many frames (%i > %i)",
mod->name, sprout->numframes, MAX_MD2SKINS);
// byte swap everything
for (i=0 ; i<sprout->numframes ; i++)
{
sprout->frames[i].width = LittleLong (sprin->frames[i].width);
sprout->frames[i].height = LittleLong (sprin->frames[i].height);
sprout->frames[i].origin_x = LittleLong (sprin->frames[i].origin_x);
sprout->frames[i].origin_y = LittleLong (sprin->frames[i].origin_y);
memcpy (sprout->frames[i].name, sprin->frames[i].name, MAX_SKINNAME);
mod->skins[i] = R_FindImage (sprout->frames[i].name, it_sprite);
}
mod->type = mod_sprite;
}
//=============================================================================
/*
@@@@@@@@@@@@@@@@@@@@@
R_BeginRegistration
Specifies the model that will be used as the world
@@@@@@@@@@@@@@@@@@@@@
*/
void R_BeginRegistration (char *model)
{
char fullname[MAX_QPATH];
cvar_t *flushmap;
registration_sequence++;
r_oldviewcluster = -1; // force markleafs
Com_sprintf (fullname, sizeof(fullname), "maps/%s.bsp", model);
D_FlushCaches ();
// explicitly free the old map if different
// this guarantees that mod_known[0] is the world map
flushmap = ri.Cvar_Get ("flushmap", "0", 0);
if ( strcmp(mod_known[0].name, fullname) || flushmap->value)
Mod_Free (&mod_known[0]);
r_worldmodel = R_RegisterModel (fullname);
R_NewMap ();
}
/*
@@@@@@@@@@@@@@@@@@@@@
R_RegisterModel
@@@@@@@@@@@@@@@@@@@@@
*/
struct model_s *R_RegisterModel (char *name)
{
model_t *mod;
int i;
dsprite_t *sprout;
dmdl_t *pheader;
mod = Mod_ForName (name, false);
if (mod)
{
mod->registration_sequence = registration_sequence;
// register any images used by the models
if (mod->type == mod_sprite)
{
sprout = (dsprite_t *)mod->extradata;
for (i=0 ; i<sprout->numframes ; i++)
mod->skins[i] = R_FindImage (sprout->frames[i].name, it_sprite);
}
else if (mod->type == mod_alias)
{
pheader = (dmdl_t *)mod->extradata;
for (i=0 ; i<pheader->num_skins ; i++)
mod->skins[i] = R_FindImage ((char *)pheader + pheader->ofs_skins + i*MAX_SKINNAME, it_skin);
//PGM
mod->numframes = pheader->num_frames;
//PGM
}
else if (mod->type == mod_brush)
{
for (i=0 ; i<mod->numtexinfo ; i++)
mod->texinfo[i].image->registration_sequence = registration_sequence;
}
}
return mod;
}
/*
@@@@@@@@@@@@@@@@@@@@@
R_EndRegistration
@@@@@@@@@@@@@@@@@@@@@
*/
void R_EndRegistration (void)
{
int i;
model_t *mod;
for (i=0, mod=mod_known ; i<mod_numknown ; i++, mod++)
{
if (!mod->name[0])
continue;
if (mod->registration_sequence != registration_sequence)
{ // don't need this model
Hunk_Free (mod->extradata);
memset (mod, 0, sizeof(*mod));
}
else
{ // make sure it is paged in
Com_PageInMemory (mod->extradata, mod->extradatasize);
}
}
R_FreeUnusedImages ();
}
//=============================================================================
/*
================
Mod_Free
================
*/
void Mod_Free (model_t *mod)
{
Hunk_Free (mod->extradata);
memset (mod, 0, sizeof(*mod));
}
/*
================
Mod_FreeAll
================
*/
void Mod_FreeAll (void)
{
int i;
for (i=0 ; i<mod_numknown ; i++)
{
if (mod_known[i].extradatasize)
Mod_Free (&mod_known[i]);
}
}