engine: try to make hashpaks more compatible between 32-bit and 64-bit platforms

engine/common/hpak.c

@@ -49,6 +49,18 @@ const char *HPAK_TypeFromIndex( int type )
 	return "?";
 }
 
+static inline void HPAK_ResourceToCompat( dresource_t *dest, resource_t *src )
+{
+	memcpy( dest, src, sizeof( *dest ));
+	dest->pNext = dest->pPrev = 0xDEADBEEF;
+}
+
+static inline void HPAK_ResourceFromCompat( resource_t *dest, dresource_t *src )
+{
+	memcpy( dest, src, sizeof( *src ));
+	dest->pNext = dest->pPrev = (void*)0xDEADBEEF;
+}
+
 static void HPAK_AddToQueue( const char *name, resource_t *pResource, void *data, file_t *f )
 {
 	hash_pack_queue_t	*p;
@@ -89,6 +101,7 @@ void HPAK_CreatePak( const char *filename, resource_t *pResource, byte *pData, f
 	byte		md5[16];
 	file_t		*fout;
 	MD5Context_t	ctx;
+	dresource_t	dresource;
 
 	if( !COM_CheckString( filename ))
 		return;
@@ -145,7 +158,7 @@ void HPAK_CreatePak( const char *filename, resource_t *pResource, byte *pData, f
 
 	hash_pack_info.count = 1;
 	hash_pack_info.entries = Z_Malloc( sizeof( hpak_lump_t ));
-	hash_pack_info.entries[0].resource = *pResource;
+	HPAK_ResourceToCompat( &hash_pack_info.entries[0].resource, pResource );
 	hash_pack_info.entries[0].filepos = FS_Tell( fout );
 	hash_pack_info.entries[0].disksize = pResource->nDownloadSize;
 
@@ -181,7 +194,7 @@ static qboolean HPAK_FindResource( hpak_info_t *hpk, byte *hash, resource_t *pRe
 		if( !memcmp( hpk->entries[i].resource.rgucMD5_hash, hash, 16 ))
 		{
 			if( pResource )
-				*pResource = hpk->entries[i].resource;
+				HPAK_ResourceFromCompat( pResource, &hpk->entries[i].resource );
 			return true;
 		}
 	}
@@ -330,7 +343,7 @@ void HPAK_AddLump( qboolean bUseQueue, const char *name, resource_t *pResource,
 
 	memset( pCurrentEntry, 0, sizeof( hpak_lump_t ));
 	FS_Seek( file_dst, hash_pack_header.infotableofs, SEEK_SET );
-	pCurrentEntry->resource = *pResource;
+	HPAK_ResourceToCompat( &pCurrentEntry->resource, pResource );
 	pCurrentEntry->filepos = FS_Tell( file_dst );
 	pCurrentEntry->disksize = pResource->nDownloadSize;
 
@@ -370,7 +383,7 @@ static qboolean HPAK_Validate( const char *filename, qboolean quiet )
 	int		i, num_lumps;
 	MD5Context_t	MD5_Hash;
 	string		pakname;
-	resource_t	*pRes;
+	dresource_t	*pRes;
 	byte		md5[16];
 
 	if( quiet ) HPAK_FlushHostQueue();
@@ -621,7 +634,7 @@ static qboolean HPAK_ResourceForIndex( const char *filename, int index, resource
 
 	directory.entries = Z_Malloc( sizeof( hpak_lump_t ) * directory.count );
 	FS_Read( f, directory.entries, sizeof( hpak_lump_t ) * directory.count );
-	*pResource = directory.entries[index-1].resource;
+	HPAK_ResourceFromCompat( pResource, &directory.entries[index-1].resource );
 	Z_Free( directory.entries );
 	FS_Close( f );
 

engine/common/hpak.h

@@ -37,6 +37,35 @@ infotable	dlumpinfo_t[dwadinfo_t->numlumps]
 #define IDHPAKHEADER	(('K'<<24)+('A'<<16)+('P'<<8)+'H') // little-endian "HPAK"
 #define IDHPAK_VERSION	1
 
+// a1ba: because Valve for some reason writes resource_t to file
+// I had to make it crossplatform version
+#pragma pack( push, 8 )
+typedef struct dresource_s
+{
+	char                       szFileName[64];       /*     0    64 */
+	/* --- cacheline 1 boundary (64 bytes) --- */
+	resourcetype_t             type;                 /*    64     4 */
+	int                        nIndex;               /*    68     4 */
+	int                        nDownloadSize;        /*    72     4 */
+	unsigned char              ucFlags;              /*    76     1 */
+	unsigned char              rgucMD5_hash[16];     /*    77    16 */
+	unsigned char              playernum;            /*    93     1 */
+	unsigned char              rguc_reserved[32];    /*    94    32 */
+
+	/* XXX 2 bytes hole, try to pack */
+
+	/* --- cacheline 2 boundary (128 bytes) --- */
+	uint32_t                   pNext;                /*   128     4 */
+	uint32_t                   pPrev;                /*   132     4 */
+
+	/* size: 136, cachelines: 3, members: 10 */
+	/* sum members: 134, holes: 1, sum holes: 2 */
+	/* last cacheline: 8 bytes */
+} dresource_t;
+#pragma pack( pop )
+
+STATIC_ASSERT( sizeof( dresource_t ) == 136, "invalid dresource_t size, HPAKs won't be compatible (no custom logo in multiplayer!)" );
+
 typedef struct
 {
 	int             ident;          // should be equal HPAK
@@ -46,7 +75,7 @@ typedef struct
 
 typedef struct
 {
-	resource_t	resource;
+	dresource_t     resource;
 	int             filepos;
 	int             disksize;
 } hpak_lump_t;