mirror of
https://github.com/nzp-team/glquake.git
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317 lines
8 KiB
C
317 lines
8 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// wad.c
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#include "quakedef.h"
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int wad_numlumps;
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lumpinfo_t *wad_lumps;
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byte *wad_base;
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void SwapPic (qpic_t *pic);
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/*
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==================
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W_CleanupName
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Lowercases name and pads with spaces and a terminating 0 to the length of
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lumpinfo_t->name.
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Used so lumpname lookups can proceed rapidly by comparing 4 chars at a time
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Space padding is so names can be printed nicely in tables.
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Can safely be performed in place.
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==================
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*/
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void W_CleanupName (char *in, char *out)
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{
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int i;
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int c;
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for (i=0 ; i<16 ; i++ )
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{
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c = in[i];
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if (!c)
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break;
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if (c >= 'A' && c <= 'Z')
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c += ('a' - 'A');
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out[i] = c;
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}
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for ( ; i< 16 ; i++ )
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out[i] = 0;
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}
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/*
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====================
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W_LoadWadFile
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====================
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*/
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void W_LoadWadFile (char *filename)
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{
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lumpinfo_t *lump_p;
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wadinfo_t *header;
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unsigned i;
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int infotableofs;
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wad_base = COM_LoadHunkFile (filename);
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if (!wad_base)
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Sys_Error ("W_LoadWadFile: couldn't load %s", filename);
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header = (wadinfo_t *)wad_base;
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if (header->identification[0] != 'W'
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|| header->identification[1] != 'A'
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|| header->identification[2] != 'D'
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|| header->identification[3] != '2')
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Sys_Error ("Wad file %s doesn't have WAD2 id\n",filename);
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wad_numlumps = LittleLong(header->numlumps);
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infotableofs = LittleLong(header->infotableofs);
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wad_lumps = (lumpinfo_t *)(wad_base + infotableofs);
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for (i=0, lump_p = wad_lumps ; i<wad_numlumps ; i++,lump_p++)
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{
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lump_p->filepos = LittleLong(lump_p->filepos);
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lump_p->size = LittleLong(lump_p->size);
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W_CleanupName (lump_p->name, lump_p->name);
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if (lump_p->type == TYP_QPIC)
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SwapPic ( (qpic_t *)(wad_base + lump_p->filepos));
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}
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}
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/*
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=============
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W_GetLumpinfo
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=============
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*/
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lumpinfo_t *W_GetLumpinfo (char *name)
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{
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int i;
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lumpinfo_t *lump_p;
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char clean[16];
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W_CleanupName (name, clean);
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for (lump_p=wad_lumps, i=0 ; i<wad_numlumps ; i++,lump_p++)
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{
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if (!strcmp(clean, lump_p->name))
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return lump_p;
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}
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Sys_Error ("W_GetLumpinfo: %s not found", name);
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return NULL;
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}
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void *W_GetLumpName (char *name)
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{
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lumpinfo_t *lump;
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lump = W_GetLumpinfo (name);
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return (void *)(wad_base + lump->filepos);
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}
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void *W_GetLumpNum (int num)
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{
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lumpinfo_t *lump;
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if (num < 0 || num > wad_numlumps)
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Sys_Error ("W_GetLumpNum: bad number: %i", num);
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lump = wad_lumps + num;
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return (void *)(wad_base + lump->filepos);
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}
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/*
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=============================================================================
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automatic byte swapping
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=============================================================================
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*/
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void SwapPic (qpic_t *pic)
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{
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pic->width = LittleLong(pic->width);
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pic->height = LittleLong(pic->height);
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}
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/*
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=============================================================================
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WAD3 Texture Loading for BSP 3.0 Support From Baker --Diabolickal HLBSP
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=============================================================================
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*/
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#define TEXWAD_MAXIMAGES 16384
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typedef struct {
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char name[MAX_QPATH];
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FILE *file;
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int position;
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int size;
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} texwadlump_t;
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static texwadlump_t texwadlump[TEXWAD_MAXIMAGES];
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void WAD3_LoadTextureWadFile (char *filename) {
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lumpinfo_t *lumps, *lump_p;
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wadinfo_t header;
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int i, j, infotableofs, numlumps, lowmark;
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FILE *file;
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if (COM_FOpenFile (va("textures/halflife/%s", filename), &file) != -1)
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goto loaded;
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if (COM_FOpenFile (va("textures/%s", filename), &file) != -1)
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goto loaded;
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if (COM_FOpenFile (filename, &file) != -1)
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goto loaded;
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Host_Error ("Couldn't load halflife wad \"%s\"\n", filename);
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loaded:
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if (fread(&header, 1, sizeof(wadinfo_t), file) != sizeof(wadinfo_t)) {
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Con_Printf ("WAD3_LoadTextureWadFile: unable to read wad header");
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return;
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}
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if (memcmp(header.identification, "WAD3", 4)) {
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Con_Printf ("WAD3_LoadTextureWadFile: Wad file %s doesn't have WAD3 id\n",filename);
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return;
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}
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numlumps = LittleLong(header.numlumps);
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if (numlumps < 1 || numlumps > TEXWAD_MAXIMAGES) {
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Con_Printf ("WAD3_LoadTextureWadFile: invalid number of lumps (%i)\n", numlumps);
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return;
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}
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infotableofs = LittleLong(header.infotableofs);
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if (fseek(file, infotableofs, SEEK_SET)) {
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Con_Printf ("WAD3_LoadTextureWadFile: unable to seek to lump table");
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return;
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}
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lowmark = Hunk_LowMark();
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if (!(lumps = Hunk_Alloc(sizeof(lumpinfo_t) * numlumps))) {
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Con_Printf ("WAD3_LoadTextureWadFile: unable to allocate temporary memory for lump table");
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return;
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}
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if (fread(lumps, 1, sizeof(lumpinfo_t) * numlumps, file) != sizeof(lumpinfo_t) * numlumps) {
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Con_Printf ("WAD3_LoadTextureWadFile: unable to read lump table");
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Hunk_FreeToLowMark(lowmark);
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return;
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}
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for (i = 0, lump_p = lumps; i < numlumps; i++,lump_p++) {
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W_CleanupName (lump_p->name, lump_p->name);
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for (j = 0; j < TEXWAD_MAXIMAGES; j++) {
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if (!texwadlump[j].name[0] || !strcmp(lump_p->name, texwadlump[j].name))
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break;
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}
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if (j == TEXWAD_MAXIMAGES)
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break; // we are full, don't load any more
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if (!texwadlump[j].name[0])
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Q_strncpyz (texwadlump[j].name, lump_p->name, sizeof(texwadlump[j].name));
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texwadlump[j].file = file;
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texwadlump[j].position = LittleLong(lump_p->filepos);
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texwadlump[j].size = LittleLong(lump_p->disksize);
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}
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Hunk_FreeToLowMark(lowmark);
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//leaves the file open
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}
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//converts paletted to rgba
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static byte *ConvertWad3ToRGBA(miptex_t *tex) {
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byte *in, *data, *pal;
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int i, p, image_size;
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if (!tex->offsets[0])
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Sys_Error("ConvertWad3ToRGBA: tex->offsets[0] == 0");
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image_size = tex->width * tex->height;
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in = (byte *) ((byte *) tex + tex->offsets[0]);
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data = malloc(image_size * 4); // Baker
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pal = in + ((image_size * 85) >> 6) + 2;
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for (i = 0; i < image_size; i++) {
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p = *in++;
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if (tex->name[0] == '{' && p == 255) {
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((int *) data)[i] = 0;
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} else {
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p *= 3;
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data[i * 4 + 0] = pal[p];
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data[i * 4 + 1] = pal[p + 1];
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data[i * 4 + 2] = pal[p + 2];
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data[i * 4 + 3] = 255;
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}
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}
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return data;
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}
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byte *WAD3_LoadTexture(miptex_t *mt) {
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char texname[MAX_QPATH];
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int i, j, lowmark = 0;
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FILE *file;
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miptex_t *tex;
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byte *data;
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if (mt->offsets[0])
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return ConvertWad3ToRGBA(mt);
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texname[sizeof(texname) - 1] = 0;
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W_CleanupName (mt->name, texname);
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for (i = 0; i < TEXWAD_MAXIMAGES; i++) {
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if (!texwadlump[i].name[0])
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break;
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if (strcmp(texname, texwadlump[i].name))
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continue;
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file = texwadlump[i].file;
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if (fseek(file, texwadlump[i].position, SEEK_SET)) {
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Con_Printf("WAD3_LoadTexture: corrupt WAD3 file");
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return NULL;
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}
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lowmark = Hunk_LowMark();
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tex = Hunk_Alloc(texwadlump[i].size);
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if (fread(tex, 1, texwadlump[i].size, file) < texwadlump[i].size) {
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Con_Printf("WAD3_LoadTexture: corrupt WAD3 file");
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Hunk_FreeToLowMark(lowmark);
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return NULL;
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}
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tex->width = LittleLong(tex->width);
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tex->height = LittleLong(tex->height);
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if (tex->width != mt->width || tex->height != mt->height) {
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Hunk_FreeToLowMark(lowmark);
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return NULL;
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}
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for (j = 0;j < MIPLEVELS;j++)
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tex->offsets[j] = LittleLong(tex->offsets[j]);
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data = ConvertWad3ToRGBA(tex);
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Hunk_FreeToLowMark(lowmark);
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return data;
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}
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return NULL;
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}
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