- Did some minor reorganization of code in r_data.cpp (mostly to make

handling of textures easier in GZDoom.)
- Did some preparations to allow loading folders on the HD into the lump
  directory.


SVN r298 (trunk)

docs/rh-log.txt

@@ -1,4 +1,10 @@
 August 17, 2006 (Changes by Graf Zahl)
+- Added a check to the map loader to check whether the map label
+  is in the same WAD as the following lump.
+- Did some minor reorganization of code in r_data.cpp (mostly to make
+  handling of textures easier in GZDoom.)
+- Did some preparations to allow loading folders on the HD into the lump
+  directory.
 - Took MF2_WINDTHRUST off AMorphedMonster. This is something that should not
   be a default setting.
 - Moved a_artiegg.cpp to g_shared and renamed it to a_morph.cpp to better reflect

src/p_setup.cpp

@@ -271,7 +271,19 @@ MapData *P_OpenMapData(const char * mapname)
 		
 		if (lump_name > lump_wad && lump_name > lump_map && lump_name != -1)
 		{
-			map->file = Wads.GetFileReader(Wads.GetLumpFile (lump_name));
+			int lumpfile=Wads.GetLumpFile(lump_name);
+			int nextfile=Wads.GetLumpFile(lump_name+1);
+
+			if (lumpfile != nextfile)
+			{
+				// The following lump is from a different file so whatever this is,
+				// it is not a multi-lump Doom level.
+				return map;
+			}
+
+			// This case can only happen if the lump is inside a real WAD file.
+			// As such any special handling for other types of lumps is skipped.
+			map->file = Wads.GetFileReader(lumpfile);
 			map->CloseOnDestruct = false;
 			map->lumpnum = lump_name;
 

src/r_data.cpp

@@ -37,10 +37,8 @@
 #include <stddef.h>
 #include <malloc.h>
 #include <stdio.h>
-extern "C"
+
-{
+#include "r_jpeg.h"
-#include <jpeglib.h>
-}
 
 #include "i_system.h"
 #include "m_alloc.h"
@@ -235,9 +233,10 @@ int FTextureManager::AddTexture (FTexture *texture)
 	return trans;
 }
 
+
 // Examines the lump contents to decide what type of texture to create,
-// creates the texture, and adds it to the manager.
+// and creates the texture.
-int FTextureManager::CreateTexture (int lumpnum, int usetype)
+FTexture * FTextureManager::DoCreateTexture (int lumpnum, int usetype)
 {
 	FTexture *out = NULL;
     enum { t_patch, t_raw, t_imgz, t_png } type = t_patch;
@@ -252,7 +251,7 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 	// 13 is the minimum length of anything valid (i.e a 1x1 pixel Doom patch.)
 	if (lumpnum < 0 || Wads.LumpLength(lumpnum)<13)
 	{
-		return -1;
+		return NULL;
 	}
 	else
 	{
@@ -272,11 +271,11 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 			// first 4 bytes match, but later bytes don't, we assume it's
 			// a corrupt PNG.)
 			data.Read (first4bytes.b, 4);
-			if (first4bytes.dw != MAKE_ID(13,10,26,10))		return -1;
+			if (first4bytes.dw != MAKE_ID(13,10,26,10))		return NULL;
 			data.Read (first4bytes.b, 4);
-			if (first4bytes.dw != MAKE_ID(0,0,0,13))		return -1;
+			if (first4bytes.dw != MAKE_ID(0,0,0,13))		return NULL;
 			data.Read (first4bytes.b, 4);
-			if (first4bytes.dw != MAKE_ID('I','H','D','R'))	return -1;
+			if (first4bytes.dw != MAKE_ID('I','H','D','R'))	return NULL;
 
 			// The PNG looks valid so far. Check the IHDR to make sure it's a
 			// type of PNG we support.
@@ -285,15 +284,15 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 
 			if (compression != 0 || filter != 0 || interlace > 1)
 			{
-				return -1;
+				return NULL;
 			}
 			if (!((1 << colortype) & 0x5D))
 			{
-				return -1;
+				return NULL;
 			}
 			if (!((1 << bitdepth) & 0x116))
 			{
-				return -1;
+				return NULL;
 			}
 
 			// Just for completeness, make sure the PNG has something more than an
@@ -305,7 +304,7 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 				data.Read (first4bytes.b, 4);
 				if (first4bytes.dw == MAKE_ID('I','E','N','D'))
 				{
-					return -1;
+					return NULL;
 				}
 			}
 
@@ -323,25 +322,25 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 			{
 				if (data.Read (first4bytes.w, 2) != 2)
 				{
-					return -1;
+					return NULL;
 				}
 				data.Seek (BigShort(first4bytes.w[0]) - 2, SEEK_CUR);
 				if (data.Read (first4bytes.b + 2, 2) != 2 || first4bytes.b[2] != 0xFF)
 				{
-					return -1;
+					return NULL;
 				}
 			}
 			if (data.Read (first4bytes.b, 3) != 3)
 			{
-				return -1;
+				return NULL;
 			}
 			if (BigShort (first4bytes.w[0]) <5)
 			{
-				return -1;
+				return NULL;
 			}
 			if (data.Read (first4bytes.b, 4) != 4)
 			{
-				return -1;
+				return NULL;
 			}
 			type = t_png;
 			out = new FJPEGTexture (lumpnum, BigShort(first4bytes.w[1]), BigShort(first4bytes.w[0]));
@@ -349,7 +348,7 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 		else if (usetype == FTexture::TEX_Flat)
 		{
 			// allow PNGs as flats but not Doom patches.
-			return -1;
+			return NULL;
 		}
 		else if ((gameinfo.flags & GI_PAGESARERAW) && data.GetLength() == 64000)
 		{
@@ -438,8 +437,16 @@ int FTextureManager::CreateTexture (int lumpnum, int usetype)
 		{
 			out->UseType = usetype;
 		}
-		return AddTexture (out);
 	}
+	return out;
+}
+
+// Calls DoCreateTexture and adds the texture to the manager.
+int FTextureManager::CreateTexture (int lumpnum, int usetype)
+{
+	FTexture *out = DoCreateTexture(lumpnum, usetype);
+
+	if (out != NULL) return AddTexture (out);
 	return -1;
 }
 
@@ -2138,13 +2145,7 @@ void FPNGTexture::MakeTexture ()
 	}
 }
 
-struct FLumpSourceMgr : public jpeg_source_mgr
+FLumpSourceMgr::FLumpSourceMgr (FileReader *lump, j_decompress_ptr cinfo)
-{
-	FWadLump &Lump;
-	JOCTET Buffer[4096];
-	bool StartOfFile;
-
-	FLumpSourceMgr (FWadLump &lump, j_decompress_ptr cinfo)
 : Lump (lump)
 {
 	cinfo->src = this;
@@ -2157,15 +2158,15 @@ struct FLumpSourceMgr : public jpeg_source_mgr
 	next_input_byte = NULL;
 }
 
-	static void InitSource (j_decompress_ptr cinfo)
+void FLumpSourceMgr::InitSource (j_decompress_ptr cinfo)
 {
 	((FLumpSourceMgr *)(cinfo->src))->StartOfFile = true;
 }
 
-	static boolean FillInputBuffer (j_decompress_ptr cinfo)
+boolean FLumpSourceMgr::FillInputBuffer (j_decompress_ptr cinfo)
 {
 	FLumpSourceMgr *me = (FLumpSourceMgr *)(cinfo->src);
-		long nbytes = me->Lump.Read (me->Buffer, sizeof(me->Buffer));
+	long nbytes = me->Lump->Read (me->Buffer, sizeof(me->Buffer));
 
 	if (nbytes <= 0)
 	{
@@ -2179,7 +2180,7 @@ struct FLumpSourceMgr : public jpeg_source_mgr
 	return TRUE;
 }
 
-	static void SkipInputData (j_decompress_ptr cinfo, long num_bytes)
+void FLumpSourceMgr::SkipInputData (j_decompress_ptr cinfo, long num_bytes)
 {
 	FLumpSourceMgr *me = (FLumpSourceMgr *)(cinfo->src);
 	if (num_bytes <= (long)me->bytes_in_buffer)
@@ -2190,23 +2191,22 @@ struct FLumpSourceMgr : public jpeg_source_mgr
 	else
 	{
 		num_bytes -= (long)me->bytes_in_buffer;
-			me->Lump.Seek (num_bytes, SEEK_CUR);
+		me->Lump->Seek (num_bytes, SEEK_CUR);
 		FillInputBuffer (cinfo);
 	}
 }
 
-	static void TermSource (j_decompress_ptr cinfo)
+void FLumpSourceMgr::TermSource (j_decompress_ptr cinfo)
 {
 }
-};
 
-static void JPEG_ErrorExit (j_common_ptr cinfo)
+void JPEG_ErrorExit (j_common_ptr cinfo)
 {
 	(*cinfo->err->output_message) (cinfo);
 	throw -1;
 }
 
-static void JPEG_OutputMessage (j_common_ptr cinfo)
+void JPEG_OutputMessage (j_common_ptr cinfo)
 {
 	char buffer[JMSG_LENGTH_MAX];
 
@@ -2299,7 +2299,7 @@ void FJPEGTexture::MakeTexture ()
 	jpeg_create_decompress(&cinfo);
 	try
 	{
-		FLumpSourceMgr sourcemgr(lump, &cinfo);
+		FLumpSourceMgr sourcemgr(&lump, &cinfo);
 		jpeg_read_header(&cinfo, TRUE);
 		if (!((cinfo.out_color_space == JCS_RGB && cinfo.num_components == 3) ||
 			  (cinfo.out_color_space == JCS_CMYK && cinfo.num_components == 4) ||

src/r_data.h

@@ -29,6 +29,7 @@
 #include "v_video.h"
 
 
+
 // A texture that doesn't really exist
 class FDummyTexture : public FTexture
 {
@@ -210,6 +211,7 @@ protected:
 };
 
 
+
 // A JPEG image
 class FJPEGTexture : public FTexture
 {

src/r_defs.h

@@ -731,6 +731,7 @@ public:
 	void AddTiles (void *tileFile);
 	void AddExtraTextures ();	// Adds patches in the ns_newtextures namespace
 
+	static FTexture *DoCreateTexture (int lumpnum, int usetype=FTexture::TEX_Any);
 	int CreateTexture (int lumpnum, int usetype=FTexture::TEX_Any);	// Also calls AddTexture
 	int AddTexture (FTexture *texture);
 	int AddPatch (const char *patchname, int namespc=0);

src/r_jpeg.h

@@ -0,0 +1,29 @@
+#ifndef __R_JPEG_H
+#define __R_JPEG_H
+
+extern "C"
+{
+#include <jpeglib.h>
+}
+#include "files.h"
+
+
+struct FLumpSourceMgr : public jpeg_source_mgr
+{
+	FileReader *Lump;
+	JOCTET Buffer[4096];
+	bool StartOfFile;
+
+	FLumpSourceMgr (FileReader *lump, j_decompress_ptr cinfo);
+	static void InitSource (j_decompress_ptr cinfo);
+	static boolean FillInputBuffer (j_decompress_ptr cinfo);
+	static void SkipInputData (j_decompress_ptr cinfo, long num_bytes);
+	static void TermSource (j_decompress_ptr cinfo);
+};
+
+
+void JPEG_ErrorExit (j_common_ptr cinfo);
+void JPEG_OutputMessage (j_common_ptr cinfo);
+
+
+#endif

src/w_wad.cpp

@@ -100,6 +100,7 @@ enum
 	LUMPF_COMPRESSED	= 2,	// Zip-compressed
 	LUMPF_ZIPFILE		= 4,	// Inside a Zip file - used to enforce use of special directories insize Zips
 	LUMPF_NEEDFILESTART	= 8,	// Still need to process local file header to find file start inside a zip
+	LUMPF_EXTERNAL		= 16,	// Lump is from an external file that won't be kept open permanently
 };
 
 class FWadCollection::WadFileRecord : public FileReader
@@ -161,7 +162,7 @@ void uppercopy (char *to, const char *from)
 FWadCollection::FWadCollection ()
 : FirstLumpIndex(NULL), NextLumpIndex(NULL),
   FirstLumpIndex_FullName(NULL), NextLumpIndex_FullName(NULL), 
-  LumpInfo(NULL), Wads(NULL), NumLumps(0), NumWads(0)
+  NumLumps(0)
 {
 }
 
@@ -187,27 +188,20 @@ FWadCollection::~FWadCollection ()
 		delete[] NextLumpIndex_FullName;
 		NextLumpIndex_FullName = NULL;
 	}
-	if (LumpInfo != NULL)
+	for (DWORD i = 0; i < LumpInfo.Size(); ++i)
-	{
-		for (DWORD i = 0; i < NumLumps; ++i)
 	{
 		if (LumpInfo[i].fullname != NULL)
 		{
 			delete[] LumpInfo[i].fullname;
 		}
 	}
-		free (LumpInfo);
+	LumpInfo.Clear();
-		LumpInfo = NULL;
+
-	}
+	for (DWORD i = 0; i < Wads.Size(); ++i)
-	if (Wads != NULL)
-	{
-		for (DWORD i = 0; i < NumWads; ++i)
 	{
 		delete Wads[i];
 	}
-		free (Wads);
+	Wads.Clear();
-		Wads = NULL;
-	}
 }
 
 //==========================================================================
@@ -227,9 +221,9 @@ void FWadCollection::InitMultipleFiles (wadlist_t **filenames)
 
 	// open all the files, load headers, and count lumps
 	numfiles = 0;
-	NumWads = 0;
+	Wads.Clear();
+	LumpInfo.Clear();
 	NumLumps = 0;
-	LumpInfo = NULL; // will be realloced as lumps are added
 
 	while (*filenames)
 	{
@@ -276,6 +270,28 @@ void FWadCollection::InitMultipleFiles (wadlist_t **filenames)
 	InitHashChains ();
 }
 
+//-----------------------------------------------------------------------
+//
+// Adds an external file to the lump list but not to the hash chains
+// It's just a simple means to assign a lump number to some file so that
+// the texture manager can read from it.
+//
+//-----------------------------------------------------------------------
+
+int FWadCollection::AddExternalFile(const char *filename)
+{
+	LumpRecord lump;
+
+	lump.fullname = copystring(filename);
+	lump.name[0]=0;
+	lump.wadnum=-1;
+	lump.flags = LUMPF_EXTERNAL;
+	lump.position = 0;
+	lump.namespc = ns_global;
+	lump.compressedsize = 0;
+	return LumpInfo.Push(lump);
+}
+
 #define BUFREADCOMMENT (0x400)
 
 //-----------------------------------------------------------------------
@@ -421,7 +437,7 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 		BloodCrypt (lumps, header.rff.DirOfs, header.rff.NumLumps * sizeof(rfflump_t));
 
 		NumLumps += header.rff.NumLumps;
-		LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, NumLumps*sizeof(LumpRecord));
+		LumpInfo.Resize(NumLumps);
 		lump_p = &LumpInfo[startlump];
 
 		for (i = 0, rff_p = lumps; i < header.rff.NumLumps; ++i, ++rff_p)
@@ -443,7 +459,7 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 
 			uppercopy (lump_p->name, rff_p->Name);
 			lump_p->name[8] = 0;
-			lump_p->wadnum = (WORD)NumWads;
+			lump_p->wadnum = (WORD)Wads.Size();
 			lump_p->position = LittleLong(rff_p->FilePos);
 			lump_p->size = LittleLong(rff_p->Size);
 			lump_p->flags = (rff_p->Flags & 0x10) >> 4;
@@ -475,12 +491,12 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 		pos = sizeof(grpinfo_t) + header.grp.NumLumps * sizeof(grplump_t);
 
 		NumLumps += header.grp.NumLumps;
-		LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, NumLumps*sizeof(LumpRecord));
+		LumpInfo.Resize(NumLumps);
 		lump_p = &LumpInfo[startlump];
 
 		for (i = 0, grp_p = lumps; i < header.grp.NumLumps; ++i, ++grp_p)
 		{
-			lump_p->wadnum = (WORD)NumWads;
+			lump_p->wadnum = (WORD)Wads.Size();
 			lump_p->position = pos;
 			lump_p->size = LittleLong(grp_p->Size);
 			pos += lump_p->size;
@@ -521,7 +537,7 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 		}
 
 		NumLumps += LittleShort(info.wEntryCount);
-		LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, NumLumps*sizeof(LumpRecord));
+		LumpInfo.Resize(NumLumps);
 		lump_p = &LumpInfo[startlump];
 
 		// Load the entire central directory. Too bad that this contains variable length entries...
@@ -617,7 +633,7 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 				memset(lump_p->name, 0, 8);
 			}
 
-			lump_p->wadnum = (WORD)NumWads;
+			lump_p->wadnum = (WORD)Wads.Size();
 			lump_p->flags = LittleShort(zip_fh->wCompression) == Z_DEFLATED? 
 								LUMPF_COMPRESSED|LUMPF_ZIPFILE : LUMPF_ZIPFILE;
 			lump_p->compressedsize = LittleLong(zip_fh->dwCompressedSize);
@@ -642,10 +658,10 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 		}
 		// Resize the lump record array to its actual size
 		NumLumps -= skipped;
-		LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, NumLumps*sizeof(LumpRecord));
+		LumpInfo.Resize(NumLumps);
 		
 		// Entries in Zips are sorted alphabetically.
-		qsort(LumpInfo + startlump, NumLumps - startlump, sizeof(LumpRecord), lumpcmp);
+		qsort(&LumpInfo[startlump], NumLumps - startlump, sizeof(LumpRecord), lumpcmp);
 	}
 	else
 	{ // This is just a single lump file
@@ -664,14 +680,14 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 		header.magic[0] != ZIP_ID &&
 		(header.magic[0] != GRP_ID_0 || header.magic[1] != GRP_ID_1 || header.magic[2] != GRP_ID_2))
 	{
-		LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, NumLumps*sizeof(LumpRecord));
+		LumpInfo.Resize(NumLumps);
 		lump_p = &LumpInfo[startlump];
 		for (i = startlump; i < (unsigned)NumLumps; i++, lump_p++, fileinfo++)
 		{
 			// [RH] Convert name to uppercase during copy
 			uppercopy (lump_p->name, fileinfo->Name);
 			lump_p->name[8] = 0;
-			lump_p->wadnum = (WORD)NumWads;
+			lump_p->wadnum = (WORD)Wads.Size();
 			lump_p->position = LittleLong(fileinfo->FilePos);
 			lump_p->size = LittleLong(fileinfo->Size);
 			lump_p->namespc = ns_global;
@@ -690,11 +706,10 @@ void FWadCollection::AddFile (const char *filename, const char * data, int lengt
 
 	wadinfo->FirstLump = startlump;
 	wadinfo->LastLump = NumLumps - 1;
-	Wads = (WadFileRecord **)M_Realloc (Wads, (++NumWads)*sizeof(WadFileRecord*));
+	Wads.Push(wadinfo);
-	Wads[NumWads-1] = wadinfo;
 
 	// [RH] Put the Strife Teaser voices into the voices namespace
-	if (NumWads == IWAD_FILENUM+1 && gameinfo.gametype == GAME_Strife && gameinfo.flags & GI_SHAREWARE)
+	if (Wads.Size() == IWAD_FILENUM+1 && gameinfo.gametype == GAME_Strife && gameinfo.flags & GI_SHAREWARE)
 	{
 		FindStrifeTeaserVoices ();
 	}
@@ -759,7 +774,7 @@ int FWadCollection::CheckIfWadLoaded (const char *name)
 
 	if (strrchr (name, '/') != NULL)
 	{
-		for (i = 0; i < NumWads; ++i)
+		for (i = 0; i < Wads.Size(); ++i)
 		{
 			if (stricmp (GetWadFullName (i), name) == 0)
 			{
@@ -769,7 +784,7 @@ int FWadCollection::CheckIfWadLoaded (const char *name)
 	}
 	else
 	{
-		for (i = 0; i < NumWads; ++i)
+		for (i = 0; i < Wads.Size(); ++i)
 		{
 			if (stricmp (GetWadName (i), name) == 0)
 			{
@@ -1066,7 +1081,7 @@ bool FWadCollection::IsMarker (const FWadCollection::LumpRecord *lump, const cha
 	{
 		// If the previous lump was of the form FF_END and this one is
 		// of the form F_END, ignore this as a marker
-		if (marker[2] == 'E' && lump > LumpInfo)
+		if (marker[2] == 'E' && lump > &LumpInfo[0])
 		{
 			if ((lump - 1)->name[0] == *marker &&
 				strncmp ((lump - 1)->name + 1, marker, 7) == 0)
@@ -1204,7 +1219,7 @@ void FWadCollection::ScanForFlatHack (int startlump)
 					}
 				}
 				++NumLumps;
-				LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, NumLumps*sizeof(LumpRecord));
+				LumpInfo.Resize(NumLumps);
 				for (; i > j; --i)
 				{
 					LumpInfo[i+1] = LumpInfo[i];
@@ -1384,7 +1399,7 @@ int FWadCollection::MergeLumps (const char *start, const char *end, int space)
 			}
 			else
 			// Check if this is the start of a block
-			if (IsMarker (LumpInfo + i, ustart))
+			if (IsMarker (&LumpInfo[i], ustart))
 			{
 				insideBlock = true;
 				markerpos = i;
@@ -1415,7 +1430,7 @@ int FWadCollection::MergeLumps (const char *start, const char *end, int space)
 				insideBlock = false;
 				LumpInfo[oldlumps++] = LumpInfo[i];
 			}
-			else if (IsMarker (LumpInfo + i, uend))
+			else if (IsMarker (&LumpInfo[i], uend))
 			{
 				// It is the end of a block. We'll add the end marker once
 				// we've processed everything.
@@ -1434,10 +1449,9 @@ int FWadCollection::MergeLumps (const char *start, const char *end, int space)
 
 	if (newlumps)
 	{
-		if (size_t(oldlumps + newlumps) >= NumLumps)
+		LumpInfo.Resize(oldlumps+newlumps+1);
-			LumpInfo = (LumpRecord *)M_Realloc (LumpInfo, (oldlumps + newlumps + 1) * sizeof(LumpRecord) );
 
-		memcpy (LumpInfo + oldlumps, newlumpinfos, sizeof(LumpRecord) * newlumps);
+		memcpy (&LumpInfo[oldlumps], newlumpinfos, sizeof(LumpRecord) * newlumps);
 		markerpos = oldlumps;
 		NumLumps = oldlumps + newlumps;
 		
@@ -1502,13 +1516,13 @@ int FWadCollection::FindLump (const char *name, int *lastlump, bool anyns)
 
 	uppercopy (name8, name);
 
-	lump_p = LumpInfo + *lastlump;
+	lump_p = &LumpInfo[*lastlump];
-	while (lump_p < LumpInfo + NumLumps)
+	while (lump_p < &LumpInfo[NumLumps])
 	{
 		if ((anyns || lump_p->namespc == ns_global) &&
 			*(__int64 *)&lump_p->name == *(__int64 *)&name8)
 		{
-			int lump = lump_p - LumpInfo;
+			int lump = lump_p - &LumpInfo[0];
 			*lastlump = lump + 1;
 			return lump;
 		}
@@ -1587,7 +1601,7 @@ int FWadCollection::GetLumpNamespace (int lump) const
 
 int FWadCollection::GetLumpFile (int lump) const
 {
-	if ((size_t)lump >= NumLumps)
+	if ((size_t)lump >= LumpInfo.Size())
 		return -1;
 	return LumpInfo[lump].wadnum;
 }
@@ -1675,20 +1689,20 @@ FWadLump FWadCollection::OpenLumpNum (int lump)
 	LumpRecord *l;
 	WadFileRecord *wad;
 
-	if ((unsigned)lump >= (unsigned)NumLumps)
+	if ((unsigned)lump >= (unsigned)LumpInfo.Size())
 	{
 		I_Error ("W_MapLumpNum: %u >= NumLumps",lump);
 	}
 
 	l = &LumpInfo[lump];
-	wad = Wads[l->wadnum];
+	wad = l->wadnum >= 0? Wads[l->wadnum] : NULL;
 
 	if (l->flags & LUMPF_NEEDFILESTART)
 	{
 		SetLumpAddress(l);
 	}
 
-	wad->Seek (l->position, SEEK_SET);
+	if (wad != NULL) wad->Seek (l->position, SEEK_SET);
 
 	if (l->flags & LUMPF_COMPRESSED)
 	{
@@ -1699,12 +1713,39 @@ FWadLump FWadCollection::OpenLumpNum (int lump)
 		frz.Read(buffer, l->size);
 		return FWadLump(buffer, l->size, true);
 	}
+	else if (l->flags & LUMPF_EXTERNAL)
+	{
+		FILE * f;
+		if (wad != NULL)	// The WadRecord in this case is just a means to store a path
+		{
+			FString name;
+
+			name.Format("%s/%s", wad->Name, l->fullname);
+			f = fopen(name, "rb");
+		}
+		else
+		{
+			f = fopen(l->fullname, "rb");
+		}
+		// This is an external file that cannot be kept open so we have to read
+		// the complete contents into a memory buffer first
+		if (f != NULL)
+		{
+			char * buffer = new char[l->size+1];	// the last byte is used as a reference counter
+			buffer[l->size] = 0;
+			fread(buffer, 1, l->size, f);
+			fclose(f);
+			return FWadLump(buffer, l->size, true);
+		}
+		// The file got deleted or worse. At least return something.
+		Printf("%s: Unable to open file\n", l->fullname);
+		return FWadLump("", 1, false);
+	}
 	else if (wad->MemoryData != NULL)
 	{
 		// A lump from an embedded WAD
 		// Handling this here creates less overhead than trying
 		// to do it inside the FWadLump class.
-
 		return FWadLump((char*)wad->MemoryData + l->position, l->size, false);
 	}
 	else
@@ -1730,13 +1771,13 @@ FWadLump *FWadCollection::ReopenLumpNum (int lump)
 	WadFileRecord *wad;
 	FILE *f;
 
-	if ((unsigned)lump >= (unsigned)NumLumps)
+	if ((unsigned)lump >= (unsigned)LumpInfo.Size())
 	{
 		I_Error ("W_MapLumpNum: %u >= NumLumps",lump);
 	}
 
 	l = &LumpInfo[lump];
-	wad = Wads[l->wadnum];
+	wad = l->wadnum >= 0? Wads[l->wadnum] : NULL;
 
 	if (l->flags & LUMPF_NEEDFILESTART)
 	{
@@ -1754,6 +1795,34 @@ FWadLump *FWadCollection::ReopenLumpNum (int lump)
 		wad->Seek(address, SEEK_SET);
 		return new FWadLump(buffer, l->size, true);	//... but restore the file pointer afterward!
 	}
+	else if (l->flags & LUMPF_EXTERNAL)
+	{
+		FILE * f;
+		if (wad != NULL)	// The WadRecord in this case is just a means to store a path
+		{
+			FString name;
+
+			name.Format("%s/%s", wad->Name, l->fullname);
+			f = fopen(name, "rb");
+		}
+		else
+		{
+			f = fopen(l->fullname, "rb");
+		}
+		// This is an external file that cannot be kept open so we have to read
+		// the complete contents into a memory buffer first
+		if (f != NULL)
+		{
+			char * buffer = new char[l->size+1];	// the last byte is used as a reference counter
+			buffer[l->size] = 0;
+			fread(buffer, 1, l->size, f);
+			fclose(f);
+			return new FWadLump(buffer, l->size, true);
+		}
+		// The file got deleted or worse. At least return something.
+		Printf("%s: Unable to open file\n", l->fullname);
+		return new FWadLump("", 1, false);
+	}
 	else if (wad->MemoryData!=NULL)
 	{
 		// A lump from an embedded WAD
@@ -1782,12 +1851,13 @@ FWadLump *FWadCollection::ReopenLumpNum (int lump)
 // GetFileReader
 //
 // Retrieves the FileReader object to access the given WAD
+// Careful: This is only useful for real WAD files!
 //
 //==========================================================================
 
 FileReader *FWadCollection::GetFileReader(int wadnum)
 {
-	if ((DWORD)wadnum >= NumWads)
+	if ((DWORD)wadnum >= Wads.Size())
 	{
 		return NULL;
 	}
@@ -1806,7 +1876,7 @@ const char *FWadCollection::GetWadName (int wadnum) const
 {
 	const char *name, *slash;
 
-	if ((DWORD)wadnum >= NumWads)
+	if ((DWORD)wadnum >= Wads.Size())
 	{
 		return NULL;
 	}
@@ -1826,7 +1896,7 @@ const char *FWadCollection::GetWadName (int wadnum) const
 
 const char *FWadCollection::GetWadFullName (int wadnum) const
 {
-	if ((unsigned int)wadnum >= NumWads)
+	if ((unsigned int)wadnum >= Wads.Size())
 	{
 		return NULL;
 	}
@@ -1854,7 +1924,7 @@ bool FWadCollection::IsUncompressedFile(int lump) const
 
 	LumpRecord * l = &LumpInfo[lump];
 
-	if (l->flags & LUMPF_COMPRESSED) return false;
+	if (l->flags & (LUMPF_COMPRESSED|LUMPF_EXTERNAL)) return false;
 	else if (Wads[l->wadnum]->MemoryData!=NULL) return false;
 	else return true;
 }
@@ -1893,7 +1963,7 @@ void FWadCollection::SkinHack (int baselump)
 {
 	bool skinned = false;
 	bool hasmap = false;
-	size_t i;
+	DWORD i;
 
 	for (i = baselump; i < NumLumps; i++)
 	{
@@ -1908,7 +1978,7 @@ void FWadCollection::SkinHack (int baselump)
 			if (!skinned)
 			{
 				skinned = true;
-				size_t j;
+				DWORD j;
 
 				for (j = baselump; j < NumLumps; j++)
 				{

src/w_wad.h

@@ -25,6 +25,7 @@
 
 #include "files.h"
 #include "doomdef.h"
+#include "tarray.h"
 
 // [RH] Compare wad header as ints instead of chars
 #define IWAD_ID		MAKE_ID('I','W','A','D')
@@ -209,6 +210,8 @@ public:
 
 	int GetNumLumps () const;
 
+	int AddExternalFile(const char *filename);
+
 protected:
 	class WadFileRecord;
 	struct LumpRecord;
@@ -220,9 +223,9 @@ protected:
 	WORD *NextLumpIndex_FullName;
 
 
-	LumpRecord *LumpInfo;
+	TArray<LumpRecord> LumpInfo;
-	WadFileRecord **Wads;
+	TArray<WadFileRecord *>Wads;
-	DWORD NumLumps;
+	DWORD NumLumps;					// Not necessarily the same as LumpInfo.Size()
 	DWORD NumWads;
 
 	void SkinHack (int baselump);

zdoom.vcproj

@@ -9433,6 +9433,10 @@
 					RelativePath=".\src\r_draw.h"
 					>
 				</File>
+				<File
+					RelativePath=".\src\r_jpeg.h"
+					>
+				</File>
 				<File
 					RelativePath=".\src\r_local.h"
 					>