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ericw-tools/qbsp/bspfile.cc

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/*
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 1997 Greg Lewis
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
See file, 'COPYING', for details.
*/
#include <stddef.h>
#include <qbsp/file.hh>
#include <qbsp/qbsp.hh>
static dheader_t *header;
typedef struct bspxentry_s
{
char lumpname[24];
const void *lumpdata;
size_t lumpsize;
struct bspxentry_s *next;
} bspxentry_t;
static bspxentry_t *bspxentries;
/*
=============
LoadBSPFile
=============
*/
void
LoadBSPFile(void)
{
int i;
int cFileSize, cLumpSize, iLumpOff;
// Load the file header
StripExtension(options.szBSPName);
strcat(options.szBSPName, ".bsp");
cFileSize = LoadFile(options.szBSPName, &header, true);
switch (header->version) {
case BSPVERSION:
case BSPHLVERSION:
MemSize = MemSize_BSP29;
break;
case BSP2RMQVERSION:
MemSize = MemSize_BSP2rmq;
break;
case BSP2VERSION:
MemSize = MemSize_BSP2;
break;
default:
Error("%s has unknown BSP version %d",
options.szBSPName, header->version);
}
options.BSPVersion = header->version;
/* Throw all of the data into the first entity to be written out later */
if (map.entities.empty()) {
map.entities.push_back(mapentity_t {});
}
mapentity_t *entity = &map.entities.at(0);
for (i = 0; i < BSP_LUMPS; i++) {
map.cTotal[i] = cLumpSize = header->lumps[i].filelen;
iLumpOff = header->lumps[i].fileofs;
if (i == LUMP_MODELS && !options.hexen2) {
int j;
if (cLumpSize % sizeof(dmodelq1_t))
Error("Deformed lump in BSP file (size %d is not divisible by %d)",
cLumpSize, (int)sizeof(dmodelq1_t));
entity->lumps[i].count = cLumpSize / sizeof(dmodelq1_t);
entity->lumps[i].data = AllocMem(i, entity->lumps[i].count, false);
map.cTotal[i] = entity->lumps[i].count * sizeof(dmodel_t);
for (j=0; j<entity->lumps[i].count; j++)
{
int k;
const dmodelq1_t *in = (dmodelq1_t *)((uint8_t *)header + iLumpOff) + j;
dmodelh2_t *out = (dmodelh2_t *)entity->lumps[i].data + j;
for (k = 0; k < 3; k++) {
out->mins[k] = in->mins[k];
out->maxs[k] = in->maxs[k];
out->origin[k] = in->origin[k];
}
for (k = 0; k < MAX_MAP_HULLS_Q1; k++)
out->headnode[k] = in->headnode[k];
out->visleafs = in->visleafs;
out->firstface = in->firstface;
out->numfaces = in->numfaces;
}
} else {
if (cLumpSize % MemSize[i])
Error("Deformed lump in BSP file (size %d is not divisible by %d)",
cLumpSize, MemSize[i]);
entity->lumps[i].count = cLumpSize / MemSize[i];
entity->lumps[i].data = AllocMem(i, entity->lumps[i].count, false);
memcpy(entity->lumps[i].data, (uint8_t *)header + iLumpOff, cLumpSize);
}
}
FreeMem(header, OTHER, cFileSize + 1);
}
//============================================================================
// To be used for all dynamic mem data
static void
AddLump(FILE *f, int Type)
{
lump_t *lump;
int cLen = 0;
int i;
size_t ret;
const struct lumpdata *entities;
const mapentity_t *entity;
lump = &header->lumps[Type];
lump->fileofs = ftell(f);
for (i = 0; i < map.numentities(); i++) {
entity = &map.entities.at(i);
entities = &entity->lumps[Type];
if (entities->data) {
if (Type == LUMP_MODELS && !options.hexen2) {
const dmodel_t *in = (const dmodel_t *)entities->data;
dmodelq1_t out;
int j, k;
for (j = 0; j < entities->count; j++)
{
for (k = 0; k < 3; k++) {
out.mins[k] = in[j].mins[k];
out.maxs[k] = in[j].maxs[k];
out.origin[k] = in[j].origin[k];
}
for (k = 0; k < MAX_MAP_HULLS_Q1; k++)
out.headnode[k] = in[j].headnode[k];
out.visleafs = in[j].visleafs;
out.firstface = in[j].firstface;
out.numfaces = in[j].numfaces;
ret = fwrite(&out, sizeof(out), 1, f);
if (ret != 1)
Error("Failure writing to file");
}
cLen += entities->count * sizeof(out);
} else {
ret = fwrite(entities->data, MemSize[Type], entities->count, f);
if (ret != entities->count)
Error("Failure writing to file");
cLen += entities->count * MemSize[Type];
}
}
}
// Add null terminating char for text
if (Type == LUMP_ENTITIES) {
ret = fwrite("", 1, 1, f);
if (ret != 1)
Error("Failure writing to file");
cLen++;
}
lump->filelen = cLen;
// Pad to 4-byte boundary
if (cLen % 4 != 0) {
size_t pad = 4 - (cLen % 4);
const char zeroBytes[] = {0, 0, 0, 0};
ret = fwrite(zeroBytes, 1, pad, f);
if (ret != pad)
Error("Failure writing to file");
}
}
// TODO: remove this once we switch to common
static void
AddLumpFromBuffer(FILE *f, int Type, void* src, size_t srcbytes)
{
lump_t *lump;
size_t ret;
lump = &header->lumps[Type];
lump->fileofs = ftell(f);
if (srcbytes) {
ret = fwrite(src, 1, srcbytes, f);
if (ret != srcbytes)
Error("Failure writing to file");
}
lump->filelen = srcbytes;
// Pad to 4-byte boundary
if (srcbytes % 4 != 0) {
size_t pad = 4 - (srcbytes % 4);
const char zeroBytes[] = {0, 0, 0, 0};
ret = fwrite(zeroBytes, 1, pad, f);
if (ret != pad)
Error("Failure writing to file");
}
}
static void
GenLump(const char *bspxlump, int Type, size_t sz)
{
int cLen = 0;
int i;
const struct lumpdata *entities;
const mapentity_t *entity;
char *out;
for (i = 0; i < map.numentities(); i++) {
entity = &map.entities.at(i);
entities = &entity->lumps[Type];
cLen += entities->count*sz;
}
if (!cLen)
return;
out = (char *)malloc(cLen);
cLen = 0;
for (i = 0; i < map.numentities(); i++) {
entity = &map.entities.at(i);
entities = &entity->lumps[Type];
memcpy(out+cLen, entities->data, entities->count*sz);
cLen += entities->count*sz;
}
BSPX_AddLump(bspxlump, out, cLen);
}
void BSPX_AddLump(const char *xname, const void *xdata, size_t xsize)
{
bspxentry_t *e;
for (e = bspxentries; e; e = e->next)
{
if (!strcmp(e->lumpname, xname))
break;
}
if (!e)
{
e = (bspxentry_t *)malloc(sizeof(*e));
memset(e, 0, sizeof(*e));
strncpy(e->lumpname, xname, sizeof(e->lumpname));
e->next = bspxentries;
bspxentries = e;
}
e->lumpdata = xdata;
e->lumpsize = xsize;
}
/*
=============
WriteBSPFile
=============
*/
void
WriteBSPFile(void)
{
FILE *f;
size_t ret;
header = (dheader_t *)AllocMem(OTHER, sizeof(dheader_t), true);
header->version = options.BSPVersion;
StripExtension(options.szBSPName);
strcat(options.szBSPName, ".bsp");
f = fopen(options.szBSPName, "wb");
if (!f)
Error("Failed to open %s: %s", options.szBSPName, strerror(errno));
/* write placeholder, header is overwritten later */
ret = fwrite(header, sizeof(dheader_t), 1, f);
if (ret != 1)
Error("Failure writing to file");
AddLump(f, LUMP_PLANES);
AddLump(f, LUMP_LEAFS);
AddLump(f, LUMP_VERTEXES);
AddLump(f, LUMP_NODES);
AddLump(f, LUMP_TEXINFO);
AddLump(f, LUMP_FACES);
if (!map.exported_clipnodes_bsp2.empty()) {
AddLumpFromBuffer(f, LUMP_CLIPNODES, map.exported_clipnodes_bsp2.data(), map.exported_clipnodes_bsp2.size() * sizeof(map.exported_clipnodes_bsp2[0]));
Q_assert(map.exported_clipnodes_bsp29.empty());
} else {
AddLumpFromBuffer(f, LUMP_CLIPNODES, map.exported_clipnodes_bsp29.data(), map.exported_clipnodes_bsp29.size() * sizeof(map.exported_clipnodes_bsp29[0]));
Q_assert(map.exported_clipnodes_bsp2.empty());
}
AddLump(f, LUMP_MARKSURFACES);
AddLump(f, LUMP_SURFEDGES);
AddLump(f, LUMP_EDGES);
AddLump(f, LUMP_MODELS);
AddLump(f, LUMP_LIGHTING);
AddLump(f, LUMP_VISIBILITY);
AddLump(f, LUMP_ENTITIES);
AddLump(f, LUMP_TEXTURES);
GenLump("LMSHIFT", BSPX_LMSHIFT, 1);
/*BSPX lumps are at a 4-byte alignment after the last of any official lump*/
if (bspxentries)
{
#define LittleLong(x) x
#define SafeWrite(f,p,l) fwrite(p, 1, l, f);
bspx_header_t xheader;
bspxentry_t *x;
bspx_lump_t xlumps[64];
uint32_t l;
uint32_t bspxheader = ftell(f);
if (bspxheader & 3)
Error("BSPX header is misaligned");
xheader.id[0] = 'B';
xheader.id[1] = 'S';
xheader.id[2] = 'P';
xheader.id[3] = 'X';
xheader.numlumps = 0;
for (x = bspxentries; x; x = x->next)
xheader.numlumps++;
if (xheader.numlumps > sizeof(xlumps)/sizeof(xlumps[0])) /*eep*/
xheader.numlumps = sizeof(xlumps)/sizeof(xlumps[0]);
SafeWrite(f, &xheader, sizeof(xheader));
SafeWrite(f, xlumps, xheader.numlumps * sizeof(xlumps[0]));
for (x = bspxentries, l = 0; x && l < xheader.numlumps; x = x->next, l++)
{
uint8_t pad[4] = {0};
xlumps[l].filelen = LittleLong(x->lumpsize);
xlumps[l].fileofs = LittleLong(ftell(f));
strncpy(xlumps[l].lumpname, x->lumpname, sizeof(xlumps[l].lumpname));
SafeWrite(f, x->lumpdata, x->lumpsize);
if (x->lumpsize % 4)
SafeWrite(f, pad, 4 - (x->lumpsize % 4));
}
fseek(f, bspxheader, SEEK_SET);
SafeWrite(f, &xheader, sizeof(xheader));
SafeWrite(f, xlumps, xheader.numlumps * sizeof(xlumps[0]));
}
fseek(f, 0, SEEK_SET);
ret = fwrite(header, sizeof(dheader_t), 1, f);
if (ret != 1)
Error("Failure writing to file");
if (fclose(f) != 0)
Error("Failure closing file");
logprint("Wrote %s\n", options.szBSPName);
FreeMem(header, OTHER, sizeof(dheader_t));
}
//============================================================================
/*
=============
PrintBSPFileSizes
Dumps info about current file
=============
*/
void
PrintBSPFileSizes(void)
{
struct lumpdata *lump;
Message(msgStat, "%8d planes %10d", map.cTotal[LUMP_PLANES], map.cTotal[LUMP_PLANES] * MemSize[BSP_PLANE]);
Message(msgStat, "%8d vertexes %10d", map.cTotal[LUMP_VERTEXES], map.cTotal[LUMP_VERTEXES] * MemSize[BSP_VERTEX]);
Message(msgStat, "%8d nodes %10d", map.cTotal[LUMP_NODES], map.cTotal[LUMP_NODES] * MemSize[BSP_NODE]);
Message(msgStat, "%8d texinfo %10d", map.cTotal[LUMP_TEXINFO], map.cTotal[LUMP_TEXINFO] * MemSize[BSP_TEXINFO]);
Message(msgStat, "%8d faces %10d", map.cTotal[LUMP_FACES], map.cTotal[LUMP_FACES] * MemSize[BSP_FACE]);
if (!map.exported_clipnodes_bsp2.empty()) {
Message(msgStat, "%8d clipnodes %10d", static_cast<int>(map.exported_clipnodes_bsp2.size()), static_cast<int>(map.exported_clipnodes_bsp2.size()) * MemSize[BSP_CLIPNODE]);
} else {
Message(msgStat, "%8d clipnodes %10d", static_cast<int>(map.exported_clipnodes_bsp29.size()), static_cast<int>(map.exported_clipnodes_bsp29.size()) * MemSize[BSP_CLIPNODE]);
}
Message(msgStat, "%8d leafs %10d", map.cTotal[LUMP_LEAFS], map.cTotal[LUMP_LEAFS] * MemSize[BSP_LEAF]);
Message(msgStat, "%8d marksurfaces %10d", map.cTotal[LUMP_MARKSURFACES], map.cTotal[LUMP_MARKSURFACES] * MemSize[BSP_MARKSURF]);
Message(msgStat, "%8d surfedges %10d", map.cTotal[LUMP_SURFEDGES], map.cTotal[LUMP_SURFEDGES] * MemSize[BSP_SURFEDGE]);
Message(msgStat, "%8d edges %10d", map.cTotal[LUMP_EDGES], map.cTotal[LUMP_EDGES] * MemSize[BSP_EDGE]);
lump = &pWorldEnt()->lumps[LUMP_TEXTURES];
if (lump->data)
Message(msgStat, "%8d textures %10d",
((dmiptexlump_t *)lump->data)->nummiptex, lump->count);
else
Message(msgStat, " 0 textures 0");
Message(msgStat, " lightdata %10d", map.cTotal[LUMP_LIGHTING]);
Message(msgStat, " visdata %10d", map.cTotal[LUMP_VISIBILITY]);
Message(msgStat, " entdata %10d", map.cTotal[LUMP_ENTITIES] + 1);
if (bspxentries) {
bspxentry_t *x;
for (x = bspxentries; x; x = x->next) {
Message(msgStat, "%8s %-12s %10i", "BSPX", x->lumpname, x->lumpsize);
}
}
}
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