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diff --git a/src/w_wad.h b/src/w_wad.h
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+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom: a Doom port merged with LxDoom and LSDLDoom
+ *  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
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *  Copyright 2005, 2006 by
+ *  Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
+ *
+ *  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__
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+//
+// 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.
+//
+
+// CPhipps - defined enum in wider scope
+// Ty 08/29/98 - add source field to identify where this lump came from
+typedef enum {
+  // CPhipps - define elements in order of 'how new/unusual'
+  source_iwad=0,    // iwad file load 
+  source_pre,       // predefined lump
+  source_auto_load, // lump auto-loaded by config file
+  source_pwad,      // pwad file load
+  source_lmp,       // lmp file load
+  source_net        // CPhipps
+} wad_source_t;
+
+// CPhipps - changed wad init
+// We _must_ have the wadfiles[] the same as those actually loaded, so there 
+// is no point having these separate entities. This belongs here.
+typedef struct {
+  const char* name;
+  wad_source_t src;
+  int handle;
+} wadfile_info_t;
+
+extern wadfile_info_t *wadfiles;
+
+extern size_t numwadfiles; // CPhipps - size of the wadfiles array
+
+void W_Init(void); // CPhipps - uses the above array
+void W_ReleaseAllWads(void); // Proff - Added for iwad switching
+void W_InitCache(void);
+void W_DoneCache(void);
+
+typedef struct
+{
+  // WARNING: order of some fields important (see info.c).
+
+  char  name[9];
+  int   size;
+
+  // 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,
+    ns_prboom
+  } li_namespace; // haleyjd 05/21/02: renamed from "namespace"
+
+  wadfile_info_t *wadfile;
+  int position;
+  wad_source_t source;
+} lumpinfo_t;
+
+extern lumpinfo_t *lumpinfo;
+extern int        numlumps;
+
+// 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);
+// CPhipps - modified for 'new' lump locking
+const void* W_CacheLumpNum (int lump);
+const void* W_LockLumpNum(int lump);
+void    W_UnlockLumpNum(int lump);
+
+// CPhipps - convenience macros
+//#define W_CacheLumpNum(num) (W_CacheLumpNum)((num),1)
+#define W_CacheLumpName(name) W_CacheLumpNum (W_GetNumForName(name))
+
+//#define W_UnlockLumpNum(num) (W_UnlockLumpNum)((num),1)
+#define W_UnlockLumpName(name) W_UnlockLumpNum (W_GetNumForName(name))
+
+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 W_HashLumps(void);                           // cph 2001/07/07 - made public
+
+#endif