// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// $Id: W_wad.h,v 1.1 2000/04/09 18:22:31 proff_fs Exp $
//
//  PRBOOM/GLBOOM (C) Florian 'Proff' Schulze (florian.proff.schulze@gmx.net)
//  based on
//  BOOM, a modified and improved DOOM engine
//  Copyright (C) 1999 by
//  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
//
//  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.
//
// DESCRIPTION:
//      WAD I/O functions.
//
//-----------------------------------------------------------------------------


#ifndef __W_WAD__
#define __W_WAD__

//
// TYPES
//

typedef struct
{
  char identification[4];                  // Should be "IWAD" or "PWAD".
  int  numlumps;
  int  infotableofs;
} wadinfo_t;

typedef struct
{
  int  filepos;
  int  size;
  char name[8];
} filelump_t;

//
// WADFILE I/O related stuff.
//

typedef struct
{
  // WARNING: order of some fields important (see info.c).

  char  name[8];
  int   size;
  const void *data;     // killough 1/31/98: points to predefined lump data

  // killough 1/31/98: hash table fields, used for ultra-fast hash table lookup
  int index, next;

  // killough 4/17/98: namespace tags, to prevent conflicts between resources
  enum {
    ns_global=0,
    ns_sprites,
    ns_flats,
    ns_colormaps
  } namespace;

  int handle;
  int position;
  // Ty 08/29/98 - add source field to identify where this lump came from
  enum {
    source_iwad=0, // iwad file load 
    source_pwad,   // pwad file load
    source_lmp,    // lmp file load
    source_pre     // predefined lump
  } source;  
} lumpinfo_t;

// killough 1/31/98: predefined lumps
extern const size_t num_predefined_lumps;
extern const lumpinfo_t predefined_lumps[];

extern void       **lumpcache;
extern lumpinfo_t *lumpinfo;
extern int        numlumps;

void W_InitMultipleFiles(char *const*filenames, int *const filesource);

// killough 4/17/98: if W_CheckNumForName() called with only
// one argument, pass ns_global as the default namespace

#define W_CheckNumForName(name) (W_CheckNumForName)(name, ns_global)
int     (W_CheckNumForName)(const char* name, int);   // killough 4/17/98
int     W_GetNumForName (const char* name);
int     W_LumpLength (int lump);
void    W_ReadLump (int lump, void *dest);
void*   W_CacheLumpNum (int lump, int tag);

#define W_CacheLumpName(name,tag) W_CacheLumpNum (W_GetNumForName(name),(tag))


char *AddDefaultExtension(char *, const char *);  // killough 1/18/98
void ExtractFileBase(const char *, char *);       // killough
unsigned W_LumpNameHash(const char *s);           // killough 1/31/98

void I_BeginRead(void), I_EndRead(void); // killough 10/98

// Function to write all predefined lumps to a PWAD if requested
extern void WritePredefinedLumpWad(const char *filename); // jff 5/6/98

#endif

//----------------------------------------------------------------------------
//
// $Log: W_wad.h,v $
// Revision 1.1  2000/04/09 18:22:31  proff_fs
// Initial revision
//
// Revision 1.11  1998/08/29  22:59:17  thldrmn
// Added source field to lumpinfo_t
//
// Revision 1.10  1998/05/06  11:32:05  jim
// Moved predefined lump writer info->w_wad
//
// Revision 1.9  1998/05/03  22:43:45  killough
// remove unnecessary #includes
//
// Revision 1.8  1998/05/01  14:55:54  killough
// beautification
//
// Revision 1.7  1998/04/27  02:05:30  killough
// Program beautification
//
// Revision 1.6  1998/04/19  01:14:36  killough
// Reinstate separate namespaces
//
// Revision 1.5  1998/04/17  16:52:21  killough
// back out namespace changes temporarily
//
// Revision 1.4  1998/04/17  10:33:50  killough
// Macroize W_CheckNumForName(), add namespace parameter to functional version
//
// Revision 1.3  1998/02/02  13:35:13  killough
// Improve lump hashing, add predefine lumps
//
// Revision 1.2  1998/01/26  19:28:01  phares
// First rev with no ^Ms
//
// Revision 1.1.1.1  1998/01/19  14:03:07  rand
// Lee's Jan 19 sources
//
//
//----------------------------------------------------------------------------