ns/releases/3.05/source/utils/common/bspfile.c
tankefugl b5590dd5d9 made a copy
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@144 67975925-1194-0748-b3d5-c16f83f1a3a1
2005-05-29 11:34:28 +00:00

709 lines
17 KiB
C

/***
*
* Copyright (c) 1998, Valve LLC. All rights reserved.
*
* This product contains software technology licensed from Id
* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
* All Rights Reserved.
*
****/
#include "cmdlib.h"
#include "mathlib.h"
#include "bspfile.h"
#include "scriplib.h"
//=============================================================================
int nummodels;
dmodel_t dmodels[MAX_MAP_MODELS];
int dmodels_checksum;
int visdatasize;
byte dvisdata[MAX_MAP_VISIBILITY];
int dvisdata_checksum;
int lightdatasize;
byte dlightdata[MAX_MAP_LIGHTING];
int dlightdata_checksum;
int texdatasize;
byte dtexdata[MAX_MAP_MIPTEX]; // (dmiptexlump_t)
int dtexdata_checksum;
int entdatasize;
char dentdata[MAX_MAP_ENTSTRING];
int dentdata_checksum;
int numleafs;
dleaf_t dleafs[MAX_MAP_LEAFS];
int dleafs_checksum;
int numplanes;
dplane_t dplanes[MAX_MAP_PLANES];
int dplanes_checksum;
int numvertexes;
dvertex_t dvertexes[MAX_MAP_VERTS];
int dvertexes_checksum;
int numnodes;
dnode_t dnodes[MAX_MAP_NODES];
int dnodes_checksum;
int numtexinfo;
texinfo_t texinfo[MAX_MAP_TEXINFO];
int texinfo_checksum;
int numfaces;
dface_t dfaces[MAX_MAP_FACES];
int dfaces_checksum;
int numclipnodes;
dclipnode_t dclipnodes[MAX_MAP_CLIPNODES];
int dclipnodes_checksum;
int numedges;
dedge_t dedges[MAX_MAP_EDGES];
int dedges_checksum;
int nummarksurfaces;
unsigned short dmarksurfaces[MAX_MAP_MARKSURFACES];
int dmarksurfaces_checksum;
int numsurfedges;
int dsurfedges[MAX_MAP_SURFEDGES];
int dsurfedges_checksum;
int num_entities;
entity_t entities[MAX_MAP_ENTITIES];
/*
===============
FastChecksum
===============
*/
int FastChecksum(void *buffer, int bytes)
{
int checksum = 0;
while( bytes-- )
checksum = _rotl(checksum, 4) ^ *((char *)buffer)++;
return checksum;
}
/*
===============
CompressVis
===============
*/
int CompressVis (byte *vis, byte *dest)
{
int j;
int rep;
int visrow;
byte *dest_p;
dest_p = dest;
visrow = (numleafs + 7)>>3;
for (j=0 ; j<visrow ; j++)
{
*dest_p++ = vis[j];
if (vis[j])
continue;
rep = 1;
for ( j++; j<visrow ; j++)
if (vis[j] || rep == 255)
break;
else
rep++;
*dest_p++ = rep;
j--;
}
return dest_p - dest;
}
/*
===================
DecompressVis
===================
*/
void DecompressVis (byte *in, byte *decompressed)
{
int c;
byte *out;
int row;
row = (numleafs+7)>>3;
out = decompressed;
do
{
if (*in)
{
*out++ = *in++;
continue;
}
c = in[1];
in += 2;
while (c)
{
*out++ = 0;
c--;
}
} while (out - decompressed < row);
}
//=============================================================================
/*
=============
SwapBSPFile
Byte swaps all data in a bsp file.
=============
*/
void SwapBSPFile (qboolean todisk)
{
int i, j, c;
dmodel_t *d;
dmiptexlump_t *mtl;
// models
for (i=0 ; i<nummodels ; i++)
{
d = &dmodels[i];
for (j=0 ; j<MAX_MAP_HULLS ; j++)
d->headnode[j] = LittleLong (d->headnode[j]);
d->visleafs = LittleLong (d->visleafs);
d->firstface = LittleLong (d->firstface);
d->numfaces = LittleLong (d->numfaces);
for (j=0 ; j<3 ; j++)
{
d->mins[j] = LittleFloat(d->mins[j]);
d->maxs[j] = LittleFloat(d->maxs[j]);
d->origin[j] = LittleFloat(d->origin[j]);
}
}
//
// vertexes
//
for (i=0 ; i<numvertexes ; i++)
{
for (j=0 ; j<3 ; j++)
dvertexes[i].point[j] = LittleFloat (dvertexes[i].point[j]);
}
//
// planes
//
for (i=0 ; i<numplanes ; i++)
{
for (j=0 ; j<3 ; j++)
dplanes[i].normal[j] = LittleFloat (dplanes[i].normal[j]);
dplanes[i].dist = LittleFloat (dplanes[i].dist);
dplanes[i].type = LittleLong (dplanes[i].type);
}
//
// texinfos
//
for (i=0 ; i<numtexinfo ; i++)
{
for (j=0 ; j<8 ; j++)
texinfo[i].vecs[0][j] = LittleFloat (texinfo[i].vecs[0][j]);
texinfo[i].miptex = LittleLong (texinfo[i].miptex);
texinfo[i].flags = LittleLong (texinfo[i].flags);
}
//
// faces
//
for (i=0 ; i<numfaces ; i++)
{
dfaces[i].texinfo = LittleShort (dfaces[i].texinfo);
dfaces[i].planenum = LittleShort (dfaces[i].planenum);
dfaces[i].side = LittleShort (dfaces[i].side);
dfaces[i].lightofs = LittleLong (dfaces[i].lightofs);
dfaces[i].firstedge = LittleLong (dfaces[i].firstedge);
dfaces[i].numedges = LittleShort (dfaces[i].numedges);
}
//
// nodes
//
for (i=0 ; i<numnodes ; i++)
{
dnodes[i].planenum = LittleLong (dnodes[i].planenum);
for (j=0 ; j<3 ; j++)
{
dnodes[i].mins[j] = LittleShort (dnodes[i].mins[j]);
dnodes[i].maxs[j] = LittleShort (dnodes[i].maxs[j]);
}
dnodes[i].children[0] = LittleShort (dnodes[i].children[0]);
dnodes[i].children[1] = LittleShort (dnodes[i].children[1]);
dnodes[i].firstface = LittleShort (dnodes[i].firstface);
dnodes[i].numfaces = LittleShort (dnodes[i].numfaces);
}
//
// leafs
//
for (i=0 ; i<numleafs ; i++)
{
dleafs[i].contents = LittleLong (dleafs[i].contents);
for (j=0 ; j<3 ; j++)
{
dleafs[i].mins[j] = LittleShort (dleafs[i].mins[j]);
dleafs[i].maxs[j] = LittleShort (dleafs[i].maxs[j]);
}
dleafs[i].firstmarksurface = LittleShort (dleafs[i].firstmarksurface);
dleafs[i].nummarksurfaces = LittleShort (dleafs[i].nummarksurfaces);
dleafs[i].visofs = LittleLong (dleafs[i].visofs);
}
//
// clipnodes
//
for (i=0 ; i<numclipnodes ; i++)
{
dclipnodes[i].planenum = LittleLong (dclipnodes[i].planenum);
dclipnodes[i].children[0] = LittleShort (dclipnodes[i].children[0]);
dclipnodes[i].children[1] = LittleShort (dclipnodes[i].children[1]);
}
//
// miptex
//
if (texdatasize)
{
mtl = (dmiptexlump_t *)dtexdata;
if (todisk)
c = mtl->nummiptex;
else
c = LittleLong(mtl->nummiptex);
mtl->nummiptex = LittleLong (mtl->nummiptex);
for (i=0 ; i<c ; i++)
mtl->dataofs[i] = LittleLong(mtl->dataofs[i]);
}
//
// marksurfaces
//
for (i=0 ; i<nummarksurfaces ; i++)
dmarksurfaces[i] = LittleShort (dmarksurfaces[i]);
//
// surfedges
//
for (i=0 ; i<numsurfedges ; i++)
dsurfedges[i] = LittleLong (dsurfedges[i]);
//
// edges
//
for (i=0 ; i<numedges ; i++)
{
dedges[i].v[0] = LittleShort (dedges[i].v[0]);
dedges[i].v[1] = LittleShort (dedges[i].v[1]);
}
}
dheader_t *header;
int CopyLump (int lump, void *dest, int size)
{
int length, ofs;
length = header->lumps[lump].filelen;
ofs = header->lumps[lump].fileofs;
if (length % size)
Error ("LoadBSPFile: odd lump size");
memcpy (dest, (byte *)header + ofs, length);
return length / size;
}
/*
=============
LoadBSPFile
=============
*/
void LoadBSPFile (char *filename)
{
int i;
//
// load the file header
//
LoadFile (filename, (void **)&header);
// swap the header
for (i=0 ; i< sizeof(dheader_t)/4 ; i++)
((int *)header)[i] = LittleLong ( ((int *)header)[i]);
if (header->version != BSPVERSION)
Error ("%s is version %i, not %i", filename, header->version, BSPVERSION);
nummodels = CopyLump (LUMP_MODELS, dmodels, sizeof(dmodel_t));
numvertexes = CopyLump (LUMP_VERTEXES, dvertexes, sizeof(dvertex_t));
numplanes = CopyLump (LUMP_PLANES, dplanes, sizeof(dplane_t));
numleafs = CopyLump (LUMP_LEAFS, dleafs, sizeof(dleaf_t));
numnodes = CopyLump (LUMP_NODES, dnodes, sizeof(dnode_t));
numtexinfo = CopyLump (LUMP_TEXINFO, texinfo, sizeof(texinfo_t));
numclipnodes = CopyLump (LUMP_CLIPNODES, dclipnodes, sizeof(dclipnode_t));
numfaces = CopyLump (LUMP_FACES, dfaces, sizeof(dface_t));
nummarksurfaces = CopyLump (LUMP_MARKSURFACES, dmarksurfaces, sizeof(dmarksurfaces[0]));
numsurfedges = CopyLump (LUMP_SURFEDGES, dsurfedges, sizeof(dsurfedges[0]));
numedges = CopyLump (LUMP_EDGES, dedges, sizeof(dedge_t));
texdatasize = CopyLump (LUMP_TEXTURES, dtexdata, 1);
visdatasize = CopyLump (LUMP_VISIBILITY, dvisdata, 1);
lightdatasize = CopyLump (LUMP_LIGHTING, dlightdata, 1);
entdatasize = CopyLump (LUMP_ENTITIES, dentdata, 1);
free (header); // everything has been copied out
//
// swap everything
//
SwapBSPFile (false);
dmodels_checksum = FastChecksum( dmodels, nummodels*sizeof(dmodels[0]) );
dvertexes_checksum = FastChecksum( dvertexes, numvertexes*sizeof(dvertexes[0]) );
dplanes_checksum = FastChecksum( dplanes, numplanes*sizeof(dplanes[0]) );
dleafs_checksum = FastChecksum( dleafs, numleafs*sizeof(dleafs[0]) );
dnodes_checksum = FastChecksum( dnodes, numnodes*sizeof(dnodes[0]) );
texinfo_checksum = FastChecksum( texinfo, numtexinfo*sizeof(texinfo[0]) );
dclipnodes_checksum = FastChecksum( dclipnodes, numclipnodes*sizeof(dclipnodes[0]) );
dfaces_checksum = FastChecksum( dfaces, numfaces*sizeof(dfaces[0]) );
dmarksurfaces_checksum = FastChecksum( dmarksurfaces, nummarksurfaces*sizeof(dmarksurfaces[0]) );
dsurfedges_checksum = FastChecksum( dsurfedges, numsurfedges*sizeof(dsurfedges[0]) );
dedges_checksum = FastChecksum( dedges, numedges*sizeof(dedges[0]) );
dtexdata_checksum = FastChecksum( dtexdata, numedges*sizeof(dtexdata[0]) );
dvisdata_checksum = FastChecksum( dvisdata, visdatasize*sizeof(dvisdata[0]) );
dlightdata_checksum = FastChecksum( dlightdata, lightdatasize*sizeof(dlightdata[0]) );
dentdata_checksum = FastChecksum( dentdata, entdatasize*sizeof(dentdata[0]) );
}
//============================================================================
FILE *wadfile;
dheader_t outheader;
void AddLump (int lumpnum, void *data, int len)
{
lump_t *lump;
lump = &header->lumps[lumpnum];
lump->fileofs = LittleLong( ftell(wadfile) );
lump->filelen = LittleLong(len);
SafeWrite (wadfile, data, (len+3)&~3);
}
/*
=============
WriteBSPFile
Swaps the bsp file in place, so it should not be referenced again
=============
*/
void WriteBSPFile (char *filename)
{
header = &outheader;
memset (header, 0, sizeof(dheader_t));
SwapBSPFile (true);
header->version = LittleLong (BSPVERSION);
wadfile = SafeOpenWrite (filename);
SafeWrite (wadfile, header, sizeof(dheader_t)); // overwritten later
AddLump (LUMP_PLANES, dplanes, numplanes*sizeof(dplane_t));
AddLump (LUMP_LEAFS, dleafs, numleafs*sizeof(dleaf_t));
AddLump (LUMP_VERTEXES, dvertexes, numvertexes*sizeof(dvertex_t));
AddLump (LUMP_NODES, dnodes, numnodes*sizeof(dnode_t));
AddLump (LUMP_TEXINFO, texinfo, numtexinfo*sizeof(texinfo_t));
AddLump (LUMP_FACES, dfaces, numfaces*sizeof(dface_t));
AddLump (LUMP_CLIPNODES, dclipnodes, numclipnodes*sizeof(dclipnode_t));
AddLump (LUMP_MARKSURFACES, dmarksurfaces, nummarksurfaces*sizeof(dmarksurfaces[0]));
AddLump (LUMP_SURFEDGES, dsurfedges, numsurfedges*sizeof(dsurfedges[0]));
AddLump (LUMP_EDGES, dedges, numedges*sizeof(dedge_t));
AddLump (LUMP_MODELS, dmodels, nummodels*sizeof(dmodel_t));
AddLump (LUMP_LIGHTING, dlightdata, lightdatasize);
AddLump (LUMP_VISIBILITY, dvisdata, visdatasize);
AddLump (LUMP_ENTITIES, dentdata, entdatasize);
AddLump (LUMP_TEXTURES, dtexdata, texdatasize);
fseek (wadfile, 0, SEEK_SET);
SafeWrite (wadfile, header, sizeof(dheader_t));
fclose (wadfile);
}
//============================================================================
#define ENTRIES(a) (sizeof(a)/sizeof(*(a)))
#define ENTRYSIZE(a) (sizeof(*(a)))
ArrayUsage( char *szItem, int items, int maxitems, int itemsize )
{
float percentage = maxitems ? items * 100.0 / maxitems : 0.0;
printf("%-12s %7i/%-7i %7i/%-7i (%4.1f%%)",
szItem, items, maxitems, items * itemsize, maxitems * itemsize, percentage );
if ( percentage > 80.0 )
printf( "VERY FULL!\n" );
else if ( percentage > 95.0 )
printf( "SIZE DANGER!\n" );
else if ( percentage > 99.9 )
printf( "SIZE OVERFLOW!!!\n" );
else
printf( "\n" );
return items * itemsize;
}
GlobUsage( char *szItem, int itemstorage, int maxstorage )
{
float percentage = maxstorage ? itemstorage * 100.0 / maxstorage : 0.0;
printf("%-12s [variable] %7i/%-7i (%4.1f%%)",
szItem, itemstorage, maxstorage, percentage );
if ( percentage > 80.0 )
printf( "VERY FULL!\n" );
else if ( percentage > 95.0 )
printf( "SIZE DANGER!\n" );
else if ( percentage > 99.9 )
printf( "SIZE OVERFLOW!!!\n" );
else
printf( "\n" );
return itemstorage;
}
/*
=============
PrintBSPFileSizes
Dumps info about current file
=============
*/
void PrintBSPFileSizes (void)
{
int numtextures = texdatasize ? ((dmiptexlump_t*)dtexdata)->nummiptex : 0;
int totalmemory = 0;
printf("\n");
printf("Object names Objects/Maxobjs Memory / Maxmem Fullness\n" );
printf("------------ --------------- --------------- --------\n" );
totalmemory += ArrayUsage( "models", nummodels, ENTRIES(dmodels), ENTRYSIZE(dmodels) );
totalmemory += ArrayUsage( "planes", numplanes, ENTRIES(dplanes), ENTRYSIZE(dplanes) );
totalmemory += ArrayUsage( "vertexes", numvertexes, ENTRIES(dvertexes), ENTRYSIZE(dvertexes) );
totalmemory += ArrayUsage( "nodes", numnodes, ENTRIES(dnodes), ENTRYSIZE(dnodes) );
totalmemory += ArrayUsage( "texinfos", numtexinfo, ENTRIES(texinfo), ENTRYSIZE(texinfo) );
totalmemory += ArrayUsage( "faces", numfaces, ENTRIES(dfaces), ENTRYSIZE(dfaces) );
totalmemory += ArrayUsage( "clipnodes", numclipnodes, ENTRIES(dclipnodes), ENTRYSIZE(dclipnodes) );
totalmemory += ArrayUsage( "leaves", numleafs, ENTRIES(dleafs), ENTRYSIZE(dleafs) );
totalmemory += ArrayUsage( "marksurfaces", nummarksurfaces,ENTRIES(dmarksurfaces), ENTRYSIZE(dmarksurfaces) );
totalmemory += ArrayUsage( "surfedges", numsurfedges, ENTRIES(dsurfedges), ENTRYSIZE(dsurfedges) );
totalmemory += ArrayUsage( "edges", numedges, ENTRIES(dedges), ENTRYSIZE(dedges) );
totalmemory += GlobUsage( "texdata", texdatasize, sizeof(dtexdata) );
totalmemory += GlobUsage( "lightdata", lightdatasize, sizeof(dlightdata) );
totalmemory += GlobUsage( "visdata", visdatasize, sizeof(dvisdata) );
totalmemory += GlobUsage( "entdata", entdatasize, sizeof(dentdata) );
printf( "=== Total BSP file data space used: %d bytes ===\n", totalmemory );
}
/*
=================
ParseEpair
=================
*/
epair_t *ParseEpair (void)
{
epair_t *e;
e = malloc (sizeof(epair_t));
memset (e, 0, sizeof(epair_t));
if (strlen(token) >= MAX_KEY-1)
Error ("ParseEpar: token too long");
e->key = copystring(token);
GetToken (false);
if (strlen(token) >= MAX_VALUE-1)
Error ("ParseEpar: token too long");
e->value = copystring(token);
return e;
}
/*
================
ParseEntity
================
*/
qboolean ParseEntity (void)
{
epair_t *e;
entity_t *mapent;
if (!GetToken (true))
return false;
if (strcmp (token, "{") )
Error ("ParseEntity: { not found");
if (num_entities == MAX_MAP_ENTITIES)
Error ("num_entities == MAX_MAP_ENTITIES");
mapent = &entities[num_entities];
num_entities++;
do
{
if (!GetToken (true))
Error ("ParseEntity: EOF without closing brace");
if (!strcmp (token, "}") )
break;
e = ParseEpair ();
e->next = mapent->epairs;
mapent->epairs = e;
} while (1);
return true;
}
/*
================
ParseEntities
Parses the dentdata string into entities
================
*/
void ParseEntities (void)
{
num_entities = 0;
ParseFromMemory (dentdata, entdatasize);
while (ParseEntity ())
{
}
}
/*
================
UnparseEntities
Generates the dentdata string from all the entities
================
*/
void UnparseEntities (void)
{
char *buf, *end;
epair_t *ep;
char line[2048];
int i;
buf = dentdata;
end = buf;
*end = 0;
for (i=0 ; i<num_entities ; i++)
{
ep = entities[i].epairs;
if (!ep)
continue; // ent got removed
strcat (end,"{\n");
end += 2;
for (ep = entities[i].epairs ; ep ; ep=ep->next)
{
sprintf (line, "\"%s\" \"%s\"\n", ep->key, ep->value);
strcat (end, line);
end += strlen(line);
}
strcat (end,"}\n");
end += 2;
if (end > buf + MAX_MAP_ENTSTRING)
Error ("Entity text too long");
}
entdatasize = end - buf + 1;
}
void SetKeyValue (entity_t *ent, char *key, char *value)
{
epair_t *ep;
for (ep=ent->epairs ; ep ; ep=ep->next)
if (!strcmp (ep->key, key) )
{
free (ep->value);
ep->value = copystring(value);
return;
}
ep = malloc (sizeof(*ep));
ep->next = ent->epairs;
ent->epairs = ep;
ep->key = copystring(key);
ep->value = copystring(value);
}
char *ValueForKey (entity_t *ent, char *key)
{
epair_t *ep;
for (ep=ent->epairs ; ep ; ep=ep->next)
if (!strcmp (ep->key, key) )
return ep->value;
return "";
}
vec_t FloatForKey (entity_t *ent, char *key)
{
char *k;
k = ValueForKey (ent, key);
return atof(k);
}
void GetVectorForKey (entity_t *ent, char *key, vec3_t vec)
{
char *k;
double v1, v2, v3;
k = ValueForKey (ent, key);
// scanf into doubles, then assign, so it is vec_t size independent
v1 = v2 = v3 = 0;
sscanf (k, "%lf %lf %lf", &v1, &v2, &v3);
vec[0] = v1;
vec[1] = v2;
vec[2] = v3;
}