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/*
Copyright (C) 1996-1997 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.
*/
// wad.c
#include "quakedef.h"
int wad_numlumps;
lumpinfo_t *wad_lumps;
byte *wad_base;
void SwapPic (qpic_t *pic);
/*
==================
W_CleanupName
Lowercases name and pads with spaces and a terminating 0 to the length of
lumpinfo_t->name.
Used so lumpname lookups can proceed rapidly by comparing 4 chars at a time
Space padding is so names can be printed nicely in tables.
Can safely be performed in place.
==================
*/
void W_CleanupName (char *in, char *out)
{
int i;
int c;
for (i=0 ; i<16 ; i++ )
{
c = in[i];
if (!c)
break;
if (c >= 'A' && c <= 'Z')
c += ('a' - 'A');
out[i] = c;
}
for ( ; i< 16 ; i++ )
out[i] = 0;
}
/*
====================
W_LoadWadFile
====================
*/
void W_LoadWadFile (char *filename)
{
lumpinfo_t *lump_p;
wadinfo_t *header;
unsigned i;
int infotableofs;
wad_base = COM_LoadHunkFile (filename);
if (!wad_base)
Sys_Error ("W_LoadWadFile: couldn't load %s", filename);
header = (wadinfo_t *)wad_base;
if (header->identification[0] != 'W'
|| header->identification[1] != 'A'
|| header->identification[2] != 'D'
|| header->identification[3] != '2')
Sys_Error ("Wad file %s doesn't have WAD2 id\n",filename);
wad_numlumps = LittleLong(header->numlumps);
infotableofs = LittleLong(header->infotableofs);
wad_lumps = (lumpinfo_t *)(wad_base + infotableofs);
for (i=0, lump_p = wad_lumps ; i<wad_numlumps ; i++,lump_p++)
{
lump_p->filepos = LittleLong(lump_p->filepos);
lump_p->size = LittleLong(lump_p->size);
W_CleanupName (lump_p->name, lump_p->name);
if (lump_p->type == TYP_QPIC)
SwapPic ( (qpic_t *)(wad_base + lump_p->filepos));
}
}
/*
=============
W_GetLumpinfo
=============
*/
lumpinfo_t *W_GetLumpinfo (char *name)
{
int i;
lumpinfo_t *lump_p;
char clean[16];
W_CleanupName (name, clean);
for (lump_p=wad_lumps, i=0 ; i<wad_numlumps ; i++,lump_p++)
{
if (!strcmp(clean, lump_p->name))
return lump_p;
}
Sys_Error ("W_GetLumpinfo: %s not found", name);
return NULL;
}
void *W_GetLumpName (char *name)
{
lumpinfo_t *lump;
lump = W_GetLumpinfo (name);
return (void *)(wad_base + lump->filepos);
}
void *W_GetLumpNum (int num)
{
lumpinfo_t *lump;
if (num < 0 || num > wad_numlumps)
Sys_Error ("W_GetLumpNum: bad number: %i", num);
lump = wad_lumps + num;
return (void *)(wad_base + lump->filepos);
}
/*
=============================================================================
automatic byte swapping
=============================================================================
*/
void SwapPic (qpic_t *pic)
{
pic->width = LittleLong(pic->width);
pic->height = LittleLong(pic->height);
}
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