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https://github.com/libretro/libretro-tyrquake.git
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fa3580ffb9
Instead of single global variables to access the one currently loaded wad, pass in a wad_t to access a specific wad. Currently this is only gfx.wad, so the global for this is held by NQ/host.c and QW/client/cl_main.c. Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
157 lines
3.4 KiB
C
157 lines
3.4 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 "common.h"
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#include "quakedef.h"
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#include "sys.h"
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#include "wad.h"
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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
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W_CleanupName(const 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 < LUMP_NAMELEN - 1; i++) {
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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 < LUMP_NAMELEN; 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
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W_LoadWadFile(wad_t *wad, const char *filename)
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{
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lumpinfo_t *lump;
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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("%s: couldn't load %s", __func__, 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", 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 = wad->lumps; i < wad->numlumps; i++, lump++) {
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lump->filepos = LittleLong(lump->filepos);
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lump->size = LittleLong(lump->size);
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W_CleanupName(lump->name, lump->name);
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if (lump->type == TYP_QPIC)
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SwapPic((qpic_t *)(wad->base + lump->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 *
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W_GetLumpinfo(wad_t *wad, const char *name)
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{
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int i;
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lumpinfo_t *lump;
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char clean[LUMP_NAMELEN];
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W_CleanupName(name, clean);
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for (lump = wad->lumps, i = 0; i < wad->numlumps; i++, lump++) {
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if (!strcmp(clean, lump->name))
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return lump;
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}
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Sys_Error("%s: %s not found", __func__, name);
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}
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void *
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W_GetLumpName(wad_t *wad, const char *name)
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{
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lumpinfo_t *lump;
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lump = W_GetLumpinfo(wad, name);
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return wad->base + lump->filepos;
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}
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void *
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W_GetLumpNum(wad_t *wad, 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("%s: bad number: %i", __func__, num);
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lump = wad->lumps + num;
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return 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
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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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