ref: a71e36307ff986c2aef20afb1507de1d74d4508a
dir: /model.c/
#include <u.h>
#include <libc.h>
#include "dat.h"
#include "quakedef.h"
#include "fns.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);
#define MAX_MOD_KNOWN 4096
model_t *mod_known;
int mod_numknown;
// values for model_t's needload
#define NL_PRESENT 0
#define NL_NEEDS_LOADED 1
#define NL_UNREFERENCED 2
void
Mod_Init(void)
{
mod_known = Hunk_Alloc(MAX_MOD_KNOWN * sizeof(*mod_known));
}
/*
===============
Mod_Extradata
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)
Host_Error("Mod_Extradata: caching failed: %s", mod->name);
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)
Host_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;
static int decompressed_size;
int c;
byte *out;
int row;
row = (model->numleafs+7)/8;
if(decompressed == nil || row > decompressed_size){
decompressed_size = row;
decompressed = realloc(decompressed, decompressed_size);
}
out = decompressed;
if(!in){ // no vis info, so make all visible
memset(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)
{
static byte *mod_novis;
static int mod_novis_size;
int sz;
sz = (model->numleafs+7)/8;
if (leaf == model->leafs) {
if(mod_novis == nil || mod_novis_size < sz){
mod_novis = realloc(mod_novis, sz);
mod_novis_size = sz;
}
memset(mod_novis, 0xff, mod_novis_size);
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++) {
mod->needload = NL_UNREFERENCED;
//FIX FOR CACHE_ALLOC ERRORS:
if (mod->type == mod_sprite) mod->cache.data = nil;
}
}
/*
==================
Mod_FindName
==================
*/
model_t *Mod_FindName (char *name)
{
int i;
model_t *mod;
model_t *avail = nil;
if (!name[0])
Host_Error("Mod_FindName: nil name");
//
// search the currently loaded models
//
for (i=0 , mod=mod_known ; i<mod_numknown ; i++, mod++)
{
if(strcmp(mod->name, name) == 0)
break;
if(mod->needload == NL_UNREFERENCED)
if (!avail || mod->type != mod_alias)
avail = mod;
}
if (i == mod_numknown)
{
if (mod_numknown == MAX_MOD_KNOWN)
{
if (avail)
{
mod = avail;
if (mod->type == mod_alias)
if (Cache_Check (&mod->cache))
Cache_Free (&mod->cache);
}
else
Host_Error("mod_numknown == MAX_MOD_KNOWN");
}
else
mod_numknown++;
strcpy (mod->name, name);
mod->needload = NL_NEEDS_LOADED;
}
return mod;
}
/*
==================
Mod_TouchModel
==================
*/
void Mod_TouchModel (char *name)
{
model_t *mod;
mod = Mod_FindName (name);
if (mod->needload == NL_PRESENT)
{
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)
{
unsigned *buf;
byte stackbuf[1024]; // avoid dirtying the cache heap
if (mod->type == mod_alias)
{
if (Cache_Check (&mod->cache))
{
mod->needload = NL_PRESENT;
return mod;
}
}
else
{
if (mod->needload == NL_PRESENT){
return mod;
}
}
//
// because the world is so huge, load it one piece at a time
//
buf = loadstklmp(mod->name, stackbuf, sizeof stackbuf, nil);
if(buf == nil){
if(crash)
Host_Error("Mod_LoadModel: %r");
return nil;
}
//
// allocate a new model
//
radix(mod->name, loadname);
loadmodel = mod;
//
// fill it in
//
// call the apropriate loader
mod->needload = NL_PRESENT;
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 = nil;
return;
}
m = (dmiptexlump_t *)(mod_base + l->fileofs);
m->nummiptex = LittleLong (m->nummiptex);
loadmodel->numtextures = m->nummiptex;
loadmodel->textures = Hunk_Alloc(m->nummiptex * sizeof *loadmodel->textures);
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) )
Con_DPrintf("Texture %s is not 16 aligned", mt->name);
pixels = mt->width*mt->height/64*85;
tx = Hunk_Alloc(pixels + sizeof *tx);
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) == 0)
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
Host_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) != 0)
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
Host_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)
Host_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)
Host_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 = nil;
return;
}
loadmodel->lightdata = Hunk_Alloc(l->filelen);
memcpy(loadmodel->lightdata, mod_base + l->fileofs, l->filelen);
}
/*
=================
Mod_LoadVisibility
=================
*/
void Mod_LoadVisibility (lump_t *l)
{
if (!l->filelen)
{
loadmodel->visdata = nil;
return;
}
loadmodel->visdata = Hunk_Alloc(l->filelen);
memcpy(loadmodel->visdata, mod_base + l->fileofs, l->filelen);
}
/*
=================
Mod_LoadEntities
=================
*/
void Mod_LoadEntities (lump_t *l)
{
if (!l->filelen)
{
loadmodel->entities = nil;
return;
}
loadmodel->entities = Hunk_Alloc(l->filelen);
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))
Host_Error("Mod_LoadVertexes: funny lump size in %s", loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc(count * sizeof *out);
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))
Host_Error("Mod_LoadSubmodels: 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]);
}
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, int ver)
{
byte *in;
medge_t *out;
int i, count, sz;
in = (void *)(mod_base + l->fileofs);
sz = ver == BSP2VERSION ? sizeof(bsp2_dedge_t) : sizeof(dedge_t);
if (l->filelen % sz)
Host_Error("Mod_LoadEdges: funny lump size in %s", loadmodel->name);
count = l->filelen / sz;
out = Hunk_Alloc((count+1) * sizeof *out);
loadmodel->edges = out;
loadmodel->numedges = count;
for ( i=0 ; i<count ; i++, out++)
{
out->v[0] = ver == BSP2VERSION ? le32u(in) : le16u(in);
out->v[1] = ver == BSP2VERSION ? le32u(in) : le16u(in);
}
}
/*
=================
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))
Host_Error("Mod_LoadTexInfo: funny lump size in %s", loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc(count * sizeof *out);
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)
Host_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)
{
double mins[2], maxs[2], val;
int i,j, e;
mvertex_t *v;
mtexinfo_t *tex;
int bmins[2], bmaxs[2];
mins[0] = mins[1] = Q_MAXFLOAT;
maxs[0] = maxs[1] = -Q_MAXFLOAT;
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 = (double)v->position[0] * (double)tex->vecs[j][0] +
(double)v->position[1] * (double)tex->vecs[j][1] +
(double)v->position[2] * (double)tex->vecs[j][2] +
(double)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]/16.0);
bmaxs[i] = ceil(maxs[i]/16.0);
s->texturemins[i] = bmins[i] * 16;
s->extents[i] = (bmaxs[i] - bmins[i]) * 16;
if ( !(tex->flags & TEX_SPECIAL) && s->extents[i] > 2000)
Host_Error("Bad surface: texture=%s flags=%ux extents[%d]=%d",
tex->texture->name,
tex->flags,
i,
s->extents[i]
);
}
}
/*
=================
Mod_LoadFaces
=================
*/
void Mod_LoadFaces (lump_t *l, int ver)
{
byte *in;
msurface_t *out;
int i, count, surfnum, sz;
in = (void *)(mod_base + l->fileofs);
sz = ver == BSP2VERSION ? sizeof(bsp2_dface_t) : sizeof(dface_t);
if (l->filelen % sz)
Host_Error("Mod_LoadFaces: funny lump size in %s", loadmodel->name);
count = l->filelen / sz;
out = Hunk_Alloc(count * sizeof *out);
loadmodel->surfaces = out;
loadmodel->numsurfaces = count;
for ( surfnum=0 ; surfnum<count ; surfnum++, out++)
{
out->plane = loadmodel->planes + (ver == BSP2VERSION ? le32u(in) : le16u(in));
out->flags = (ver == BSP2VERSION ? le32u(in) : le16u(in)) ? SURF_PLANEBACK : 0;
out->firstedge = le32u(in);
out->numedges = ver == BSP2VERSION ? le32u(in) : le16u(in);
out->texinfo = loadmodel->texinfo + (ver == BSP2VERSION ? le32u(in) : le16u(in));
CalcSurfaceExtents (out);
// lighting info
memmove(out->styles, in, MAXLIGHTMAPS);
in += MAXLIGHTMAPS;
out->samples = (i = le32(in)) < 0 ? nil : loadmodel->lightdata + i;
// set the drawing flags flag
if(strncmp(out->texinfo->texture->name, "sky", 3) == 0)
out->flags |= SURF_DRAWSKY | SURF_DRAWTILED;
else if(strncmp(out->texinfo->texture->name, "*", 1) == 0){ // turbulent
out->flags |= SURF_DRAWTURB | SURF_DRAWTILED;
for (i=0 ; i<2 ; i++){
out->extents[i] = 16384;
out->texturemins[i] = -8192;
}
}
}
}
/*
=================
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 ver)
{
int i, j, count, p, sz;
byte *in;
mnode_t *out;
in = (void *)(mod_base + l->fileofs);
sz = ver == BSP2VERSION ? sizeof(bsp2_dnode_t) : sizeof(dnode_t);
if (l->filelen % sz)
Host_Error("Mod_LoadNodes: funny lump size in %s", loadmodel->name);
count = l->filelen / sz;
out = Hunk_Alloc(count * sizeof *out);
loadmodel->nodes = out;
loadmodel->numnodes = count;
for ( i=0 ; i<count ; i++, out++)
{
out->plane = loadmodel->planes + le32u(in);
for (j=0 ; j<2 ; j++){
p = ver == BSP2VERSION ? le32(in) : le16u(in);
if(p >= 0 && p < count)
out->children[j] = loadmodel->nodes + p;
else{
p = ver == BSP2VERSION ? -1-p : 0xffff-p;
if(p >= 0 && p < loadmodel->numleafs)
out->children[j] = (mnode_t *)(loadmodel->leafs + p);
else{
Con_Printf("Mod_LoadNodes: invalid node child\n");
out->children[j] = (mnode_t *)loadmodel->leafs;
}
}
}
for(j=0 ; j<3 ; j++)
out->minmaxs[0+j] = ver == BSP2VERSION ? f32(in) : le16(in);
for(j=0 ; j<3 ; j++)
out->minmaxs[3+j] = ver == BSP2VERSION ? f32(in) : le16(in);
out->firstsurface = ver == BSP2VERSION ? le32u(in) : le16u(in);
out->numsurfaces = ver == BSP2VERSION ? le32u(in) : le16u(in);
}
Mod_SetParent (loadmodel->nodes, nil); // sets nodes and leafs
}
/*
=================
Mod_LoadLeafs
=================
*/
void Mod_LoadLeafs (lump_t *l, int ver)
{
byte *in;
mleaf_t *out;
int i, j, count, p, sz;
in = (void *)(mod_base + l->fileofs);
sz = ver == BSP2VERSION ? sizeof(bsp2_dleaf_t) : sizeof(dleaf_t);
if (l->filelen % sz)
Host_Error("Mod_LoadLeafs: funny lump size in %s", loadmodel->name);
count = l->filelen / sz;
out = Hunk_Alloc(count * sizeof *out);
loadmodel->leafs = out;
loadmodel->numleafs = count;
for ( i=0 ; i<count ; i++, out++)
{
out->contents = le32(in);
out->compressed_vis = (p = le32(in)) < 0 ? nil : loadmodel->visdata + p;
for(j=0 ; j<3 ; j++)
out->minmaxs[0+j] = ver == BSP2VERSION ? f32(in) : le16(in);
for(j=0 ; j<3 ; j++)
out->minmaxs[3+j] = ver == BSP2VERSION ? f32(in) : le16(in);
out->firstmarksurface = loadmodel->marksurfaces + (ver == BSP2VERSION ? le32u(in) : le16u(in));
out->nummarksurfaces = ver == BSP2VERSION ? le32u(in) : le16u(in);
memmove(out->ambient_sound_level, in, 4);
in += 4;
}
}
/*
=================
Mod_LoadClipnodes
=================
*/
void Mod_LoadClipnodes (lump_t *l, int ver)
{
byte *in;
mclipnode_t *out;
int i, count, sz;
hull_t *hull;
in = (void *)(mod_base + l->fileofs);
sz = ver == BSP2VERSION ? sizeof(bsp2_dclipnode_t) : sizeof(dclipnode_t);
if (l->filelen % sz)
Host_Error("Mod_LoadClipnodes: funny lump size in %s", loadmodel->name);
count = l->filelen / sz;
out = Hunk_Alloc(count * sizeof *out);
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++)
{
out->planenum = le32u(in);
out->children[0] = ver == BSP2VERSION ? le32u(in) : le16u(in);
out->children[1] = ver == BSP2VERSION ? le32u(in) : le16u(in);
if(out->children[0] >= count)
out->children[0] -= 0x10000;
if(out->children[1] >= count)
out->children[1] -= 0x10000;
}
}
/*
=================
Mod_MakeHull0
Deplicate the drawing hull structure as a clipping hull
=================
*/
void Mod_MakeHull0 (void)
{
mnode_t *in, *child;
mclipnode_t *out;
int i, j, count;
hull_t *hull;
hull = &loadmodel->hulls[0];
in = loadmodel->nodes;
count = loadmodel->numnodes;
out = Hunk_Alloc(count * sizeof *out);
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 ver)
{
int i, j, count, sz;
byte *in;
msurface_t **out;
in = (void *)(mod_base + l->fileofs);
sz = ver == BSP2VERSION ? sizeof(u32int) : sizeof(u16int);
if (l->filelen % sz)
Host_Error("Mod_LoadMarksurfaces: funny lump size in %s", loadmodel->name);
count = l->filelen / sz;
out = Hunk_Alloc(count * sizeof *out);
loadmodel->marksurfaces = out;
loadmodel->nummarksurfaces = count;
for ( i=0 ; i<count ; i++)
{
j = ver == BSP2VERSION ? le32u(in) : le16u(in);
if(j < 0 || j >= loadmodel->numsurfaces)
Host_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))
Host_Error("Mod_LoadSurfedges: funny lump size in %s", loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc(count * sizeof *out);
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))
Host_Error("Mod_LoadPlanes: funny lump size in %s", loadmodel->name);
count = l->filelen / sizeof(*in);
out = Hunk_Alloc(count * 2 * sizeof *out);
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, ver;
dheader_t *header;
dmodel_t *bm;
loadmodel->type = mod_brush;
header = (dheader_t *)buffer;
ver = LittleLong (header->version);
if (ver != BSPVERSION && ver != BSP2VERSION)
Host_Error("Mod_LoadBrushModel: %s has wrong version number (%ux should be %ux or %ux)", mod->name, ver, BSPVERSION, BSP2VERSION);
// swap all the lumps
mod_base = (byte *)header;
for (i=0 ; i<sizeof(dheader_t)/4 ; i++)
((int *)header)[i] = LittleLong ( ((int *)header)[i]);
// load into heap
Mod_LoadVertexes (&header->lumps[LUMP_VERTEXES]);
Mod_LoadEdges (&header->lumps[LUMP_EDGES], ver);
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], ver);
Mod_LoadMarksurfaces (&header->lumps[LUMP_MARKSURFACES], ver);
Mod_LoadVisibility (&header->lumps[LUMP_VISIBILITY]);
Mod_LoadLeafs (&header->lumps[LUMP_LEAFS], ver);
Mod_LoadNodes (&header->lumps[LUMP_NODES], ver);
Mod_LoadClipnodes (&header->lumps[LUMP_CLIPNODES], ver);
Mod_LoadEntities (&header->lumps[LUMP_ENTITIES]);
Mod_LoadSubmodels (&header->lumps[LUMP_MODELS]);
Mod_MakeHull0 ();
mod->numframes = 2; // regular and alternate animation
mod->flags = 0;
//
// 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;
VectorCopy (bm->maxs, mod->maxs);
VectorCopy (bm->mins, mod->mins);
mod->radius = RadiusFromBounds (mod->mins, mod->maxs);
mod->numleafs = bm->visleafs;
if (i < mod->numsubmodels-1)
{ // duplicate the basic information
char name[12];
sprint (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);
*pframeindex = Hunk_From(pheader);
pframe = Hunk_Alloc(numv * sizeof *pframe);
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);
*pframeindex = Hunk_From(pheader);
paliasgroup = Hunk_Alloc(sizeof(*paliasgroup) +
(numframes - 1) * sizeof paliasgroup->frames[0]);
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];
}
pin_intervals = (daliasinterval_t *)(pingroup + 1);
paliasgroup->intervals = Hunk_From(pheader);
poutintervals = Hunk_Alloc(numframes * sizeof *poutintervals);
for (i=0 ; i<numframes ; i++)
{
*poutintervals = LittleFloat (pin_intervals->interval);
if (*poutintervals <= 0.0)
Host_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;
}
void *
Mod_LoadAliasSkin(void * pin, int *pskinindex, int skinsize, aliashdr_t *pheader)
{
uchar *pskin, *pinskin;
*pskinindex = Hunk_From(pheader);
pskin = Hunk_Alloc(skinsize);
pinskin = (uchar *)pin;
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);
*pskinindex = Hunk_From(pheader);
paliasskingroup = Hunk_Alloc(sizeof(*paliasskingroup) +
(numskins - 1) * sizeof paliasskingroup->skindescs[0]);
paliasskingroup->numskins = numskins;
pinskinintervals = (daliasskininterval_t *)(pinskingroup + 1);
paliasskingroup->intervals = Hunk_From(pheader);
poutskinintervals = Hunk_Alloc(numskins * sizeof *poutskinintervals);
for (i=0 ; i<numskins ; i++)
{
*poutskinintervals = LittleFloat (pinskinintervals->interval);
if (*poutskinintervals <= 0)
Host_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;
pinmodel = (mdl_t *)buffer;
version = LittleLong (pinmodel->version);
if (version != ALIAS_VERSION)
Host_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_Alloc(size);
pmodel = (mdl_t *) ((byte *)&pheader[1] +
(LittleLong (pinmodel->numframes) - 1) *
sizeof (pheader->frames[0]));
pheader->model = (byte *)pmodel - (byte *)pheader;
// 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)
Host_Error("model %s has a skin taller than %d", mod->name,
MAX_LBM_HEIGHT);
pmodel->numverts = LittleLong (pinmodel->numverts);
if (pmodel->numverts <= 0)
Host_Error("model %s has no vertices", mod->name);
if (pmodel->numverts > MAXALIASVERTS)
Host_Error("model %s has too many vertices", mod->name);
pmodel->numtris = LittleLong (pinmodel->numtris);
if (pmodel->numtris <= 0)
Host_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)
Host_Error("Mod_LoadAliasModel: skinwidth not multiple of 4");
//
// load the skins
//
skinsize = pmodel->skinheight * pmodel->skinwidth;
if (numskins < 1)
Host_Error("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins);
pskintype = (daliasskintype_t *)&pinmodel[1];
pheader->skindesc = Hunk_From(pheader);
pskindesc = Hunk_Alloc(numskins * sizeof *pskindesc);
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)
Host_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
//
Hunk_CacheFrom(&mod->cache, pheader);
}
void *
Mod_LoadSpriteFrame(void * pin, mspriteframe_t **ppframe)
{
int width, height, size, origin[2];
dspriteframe_t *pinframe;
mspriteframe_t *pspriteframe;
pinframe = (dspriteframe_t *)pin;
width = LittleLong(pinframe->width);
height = LittleLong(pinframe->height);
size = width * height;
pspriteframe = Hunk_Alloc(size + sizeof *pspriteframe);
memset(pspriteframe, 0, size + sizeof *pspriteframe);
*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], (uchar *)(pinframe + 1), size);
return (void *)((byte *)pinframe + size + sizeof *pinframe);
}
/*
=================
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_Alloc(sizeof(*pspritegroup) +
(numframes - 1) * sizeof pspritegroup->frames[0]);
pspritegroup->numframes = numframes;
*ppframe = (mspriteframe_t *)pspritegroup;
pin_intervals = (dspriteinterval_t *)(pingroup + 1);
poutintervals = Hunk_Alloc(numframes * sizeof *poutintervals);
pspritegroup->intervals = poutintervals;
for (i=0 ; i<numframes ; i++)
{
*poutintervals = LittleFloat (pin_intervals->interval);
if (*poutintervals <= 0.0)
Host_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)
Host_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_Alloc(size);
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)
Host_Error("Mod_LoadSpriteModel: Invalid # of frames: %d\n", numframes);
mod->numframes = numframes;
mod->flags = 0;
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",mod->cache.data, mod->name);
if (mod->needload & NL_UNREFERENCED)
Con_Printf (" (!R)");
if (mod->needload & NL_NEEDS_LOADED)
Con_Printf (" (!P)");
Con_Printf ("\n");
}
}