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Catdaddy

DukeNukem 3D .GRP Files

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Catdaddy

OK. Most of you will think this a pointless experiment but I was just curious to see if it could be done in AutoIt.

The 3D shooter, Duke Nukem 3D, that came out in the mid 90's, used a type of archive for storing it's resource files. It was called a .GRP file or a Group file. The engine author, Ken Silverman, needed a quick and dirty way of consolidating the sound, music and art files and so he came up with this convention. The file format for a .GRP file is as follows:

Bytes 0-11 = 12 byte array or 12 byte ID which is "KenSilverman"

Bytes 12-15 = long integer (4 bytes) which is total number of files contained in .GRP file (X number of files)

Then we have X number of records in the following format:

Bytes 16-27 = 12 byte array for filename (this would be the first filename in the group. I imagine it is only 12 bytes because of the older naming convention: 8.3 or xxxxxxxx.xxx

Bytes 28-31 = long integer (4 bytes) which is the length of the first file in bytes.

And so on. Etc.

Finally, after the index, we have X number of file data, stored in respect to the order of the filenames, one after the other, back to back.

In short, it is just an uncompressed archive of data!

(This was taken from the official 3Drealms site).

Soooo......

I have attempted to see if I could write an AutoIt script that could at least SEE what was contained in a .GRP file. From there I thought about making my own extractor but that is down the road a bit. Here is my code so far:

CODE
Dim $B[5]

$File = "MY.GRP"

$Result = FileOpen ("Result.txt", 1)

; Open and check if file opened for reading OK

$GrpFile = FileOpen($File, 0)

If $GrpFile = -1 Then

MsgBox(0, "Error", "Unable to open file.")

Exit

EndIf

; Read first 12 bytes for ID

$FileID = FileRead($GrpFile, 12)

; If $FileID does not = "KenSilverman" then file is not a true GRP

If $FileID <> "KenSilverman" Then

MsgBox(16,"Error","This does not appear to be a genuine .GRP file.")

Exit

EndIf

FileWriteLine ($Result, "Group file: " & $File & @CRLF)

FileWriteLine ($Result, "File ID: " & $FileID & @CRLF)

; Read next four bytes as long integer for total number of files contained

For $L = 1 to 4

$B[$L] = Asc(FileRead($GrpFile, 1))

Next

$Hex = Hex($B[4],2) & Hex($B[3],2) & Hex($B[2],2) & Hex($B[1],2)

$TotalNumFiles = Dec($Hex)

FileWriteLine ($Result, "Total Number of Files: " & $TotalNumFiles & @CRLF & @CRLF)

For $T = 1 To $TotalNumFiles

Dim $B[5]

; Read next 12 bytes for filename of first file

$FileName = FileRead($GrpFile, 12)

; Read next 4 bytes as long integer for file length

For $L = 1 to 4

$B[$L] = Asc(FileRead($GrpFile, 1))

Next

$Hex = Hex($B[4],2) & Hex($B[3],2) & Hex($B[2],2) & Hex($B[1],2)

$FileLength = Dec($Hex)

FileWriteLine ($Result, $FileName & "," & $FileLength & @CRLF)

Next

FileClose($GrpFile)

FileClose($Result)

Essentially, I run this from the same folder where my MY.GRP is located and it creates a text file named RESULTS.TXT.

Well, here are the results when I run this script:

Group file: MY.GRP

File ID: KenSilverman

Total Number of Files: 4

TILES014.ART,1207332

W2DDEFS.CON

ARWOLF.MAP

MACHAMB.VOC

What it SHOULD be displaying is filename, then a comma, then the file length or byte size. As you can see, it displays the byte size for the first file and then nothing for the rest. It seems to read the filenames correctly but not the file size. Of course, when I decide to write an extractor for these files I would need to know the correct position in the file where it's located and how long each file is bytewise.

Yes, I know, the game came with it's own handlers (KGROUP.EXE and KEXTRACT.EXE). Like I said, probably a waste of time, but I just wanted to see if it could be done in AutoIt. If some kind soul out there would have the time to take a look at this I would greatly appreciate it. I've included a sample .GRP file. It's in a zip file called MY.zip. I'm using AutoIt version 3.3.0.0 if that helps any. I think my lack of knowledge of how AutoIt reads an open file is to blame but I'm just not sure where I'm going wrong.

MY.zip

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Inverted

These are the results for the full game's DUKE3D.GRP :

Group file: MY.GRP
File ID: KenSilverman
Total Number of Files: 456

LOGO.ANM
CINEOV2.ANM
CINEOV3.ANM
RADLOGO.ANM
DUKETEAM.ANM,66467
VOL41A.ANM
VOL42A.ANM
VOL43A.ANM
VOL4E1.ANM
VOL4E2.ANM
VOL4E3.ANM
DEFS.CON
GAME.CON
USER.CON
D3DTIMBR.TMB,3328
DUKE3D.BIN
LOOKUP.DAT
PALETTE.DAT
TABLES.DAT
FLYBY.VOC
SECRET.VOC
BLANK.VOC
ROAM06.VOC
ROAM58.VOC
PREDRG.VOC
GBLASR01.VOC,5243
PREDPN.VOC
PREDDY.VOC
CHOKN12.VOC
PREDRM.VOC
LIZSPIT.VOC
PIGRM.VOC
ROAM29.VOC
ROAM67.VOC
PIGRG.VOC
PIGPN.VOC
PIGDY.VOC
PIGWRN.VOC
OCTARM.VOC
OCTARG.VOC
OCTAAT1.VOC
OCTAAT2.VOC
OCTAPN.VOC
OCTADY.VOC
BOS1RM.VOC
BOS1RG.VOC
BOS1PN.VOC
BOS1DY.VOC
KICKHIT.VOC
RICOCHET.VOC,4683
BULITHIT.VOC,2170
PISTOL.VOC
CLIPOUT.VOC
CLIPIN.VOC
CHAINGUN.VOC,3198
SHOTGNCK.VOC,7812
RPGFIRE.VOC
BOMBEXPL.VOC,21020
PBOMBBNC.VOC,1360
WPNSEL21.VOC,5468
SHRINK.VOC
LSRBMBPT.VOC,1926
LSRBMBWN.VOC,2618
SHRINKER.VOC,9701
VENTBUST.VOC,7522
GLASS.VOC
GLASHEVY.VOC,8663
SHORTED.VOC
SPLASH.VOC
ALERT.VOC
REACTOR.VOC
SUBWAY.VOC
GEARGRND.VOC,8697
GASP.VOC
GASPS07.VOC
PISSING.VOC
KNUCKLE.VOC
DRINK18.VOC
EXERT.VOC
HARTBEAT.VOC,4295
PAIN13.VOC
PAIN28.VOC
PAIN39.VOC
PAIN87.VOC
WETFEET.VOC
LAND02.VOC
DUCTWLK.VOC
PAIN54.VOC
PAIN75.VOC
PAIN93.VOC
PAIN68.VOC
DAMN03.VOC
DAMNIT04.VOC,5530
COMEON02.VOC,7031
WAITIN03.VOC,17544
COOL01.VOC
AHMUCH03.VOC,22320
DANCE01.VOC
LETSRK03.VOC,9430
READY2A.VOC
RIPEM08.VOC
ROCKIN02.VOC,8132
AHH04.VOC
GULP01.VOC
PAY02.VOC
AMESS06.VOC
BITCHN04.VOC,11125
DOOMED16.VOC,23392
HOLYCW01.VOC,12449
HOLYSH02.VOC,12495
IMGOOD12.VOC,15165
ONLYON03.VOC,16055
PIECE02.VOC
RIDES09.VOC
2RIDE06.VOC
THSUK13A.VOC,18400
WANSOM4A.VOC,12800
MYSELF3A.VOC,22239
NEEDED03.VOC,16086
SHAKE2A.VOC
DUKNUK14.VOC,37069
GETSOM1A.VOC,11775
GOTHRT01.VOC,21697
GROOVY02.VOC,8942
WHRSIT05.VOC,8231
BOOBY04.VOC
DIESOB03.VOC,16365
DSCREM04.VOC,30563
LOOKIN01.VOC,17243
PISSIN01.VOC,12783
GETITM19.VOC,1961
SCUBA.VOC
JETPAKON.VOC,9617
JETPAKI.VOC
JETPAKOF.VOC,9980
GOGGLE12.VOC,1746
THUD.VOC
SQUISH.VOC
TELEPORT.VOC,5303
GBELEV01.VOC,14121
GBELEV02.VOC,2028
SWITCH.VOC
FLUSH.VOC
QUAKE.VOC
MONITOR.VOC
POOLBAL1.VOC,2036
ONBOARD.VOC
BUBBLAMB.VOC,29114
MACHAMB.VOC
WIND54.VOC
STEAMHIS.VOC,8359
BARMUSIC.VOC,77801
WARAMB13.VOC,42180
WARAMB21.VOC,40927
WARAMB23.VOC,42467
WARAMB29.VOC,18103
COMPAMB.VOC
SLIDOOR.VOC
OPENDOOR.VOC,7097
EDOOR10.VOC
EDOOR11.VOC
FSCRM10.VOC
H2OGRGL2.VOC,24238
GRIND.VOC
ENGHUM.VOC
LAVA06.VOC
PHONBUSY.VOC,10853
ROAM22.VOC
AMB81B.VOC
ROAM98B.VOC
H2ORUSH2.VOC,15647
PROJRUN.VOC
FIRE09.VOC
!PRISON.VOC
!PIG.VOC
!BOSS.VOC
MICE3.VOC
DRIP3.VOC
ITEM15.VOC
BONUS.VOC
CATFIRE.VOC
KILLME.VOC
SHOTGUN7.VOC,52477
DMDEATH.VOC
HAPPEN01.VOC,13719
DSCREM15.VOC,10642
DSCREM16.VOC,9677
DSCREM17.VOC,5529
DSCREM18.VOC,12210
DSCREM38.VOC,13499
RIP01.VOC
NOBODY01.VOC,36937
CHEW05.VOC
LETGOD01.VOC,16172
HAIL01.VOC
BLOWIT01.VOC,22265
EATSHT01.VOC,25003
FACE01.VOC
INHELL01.VOC,21017
SUKIT01.VOC
PISSES01.VOC,27560
MUSTDIE.VOC
DEFEATED.VOC,37429
MONOLITH.VOC,52923
HYDRO50.VOC
ASWTCH23.VOC,4799
HYDRO22.VOC
HYDRO24.VOC
HYDRO27.VOC
HYDRO34.VOC
HYDRO40.VOC
HYDRO43.VOC
VAULT04.VOC
2BWILD.VOC
FREEZE.VOC
B2ATK02.VOC
B2ATK01.VOC
B2DIE03.VOC
B2PAIN03.VOC,11919
B2REC03.VOC
B3ROAM01.VOC,22941
B3DIE03G.VOC,24101
B3REC03G.VOC,11333
B3PAIN04.VOC,21625
CTRLRM25.VOC,17741
HLIDLE03.VOC,16701
LIZSHIT3.VOC,4539
ADOOR1.VOC
ADOOR2.VOC
FORCE01.VOC
JONES04.VOC
QUAKE06.VOC
TERMIN01.VOC,12115
BORN01.VOC
CON03.VOC
SNAKRM.VOC
SNAKRG.VOC
SNAKATA.VOC
SNAKATB.VOC
SNAKPN.VOC
SNAKDY.VOC
COMMRM.VOC
COMMRG.VOC
COMMAT.VOC
COMMPN.VOC
COMMDY.VOC
COMMSP.VOC
SLIMAT.VOC
SLHTCH01.VOC,12137
SLIDIE03.VOC,5569
SLIREC06.VOC,12819
SLIROA02.VOC,16099
KTITX.VOC
WHIPYU01.VOC,29895
GUNHIT2.VOC
HEADRIP3.VOC,76171
BUCKLE.VOC
JETP2.VOC
ZIPPER2.VOC
NEWS.VOC
WHISTLE.VOC
CHEER.VOC
GMEOVR05.VOC,9558
GRABBAG.VOC
NAME01.VOC
R&R01.VOC
LANI08.VOC
LANI05.VOC
LANIDUK2.VOC,68419
TYPING.VOC
CLANG1.VOC
INTRO4H1.VOC,95868
INTRO4H2.VOC,169814
INTROA.VOC
INTROB.VOC
INTROC.VOC
SQUISH1A.VOC,11839
SBR1C.VOC
BANG1.VOC
SKIDCR1.VOC
MUZAK028.VOC,96135
MUZAKDIE.VOC,25468
ENLARGE.VOC
DOM03.VOC
DOM09.VOC
DOM11.VOC
DOM12.VOC
DOLPHIN.VOC
DEEPFRY1.VOC,30981
DOGWHINE.VOC,29271
DOGYELP.VOC
SWEET03.VOC
SWEET04.VOC
SWEET05.VOC
SWEET16.VOC
TRUMBLE.VOC
TCLAP2A.VOC
ALARM1A.VOC
RAIN3A.VOC
JEEP2A.VOC
CDOOR1B.VOC
WAVE1A.VOC
EXSHOT3B.VOC,6970
SHORN1.VOC
SBELL1A.VOC
GRUN.VOC
BRUN.VOC
GSCORE.VOC
BSCORE.VOC
TANK3A.VOC
BLROAM2A.VOC,20550
BLREC4B.VOC
BLRIP1A.VOC
BLRIP1B.VOC
BLSPIT1A.VOC,22379
BLPAIN1B.VOC,8225
BLDIE3A.VOC
BQROAM2A.VOC,26563
BQREC2A.VOC
BQPAIN2A.VOC,13268
BQSHOCK3.VOC,54390
BQEGG1A.VOC
BQDIE1A.VOC
ABORT01.VOC
KICK01-I.VOC,18528
AISLE402.VOC,18616
ANNOY03.VOC
BOOKEM03.VOC,13842
CRY01.VOC
DETRUCT2.VOC,20641
EAT08.VOC
ESCAPE01.VOC,19538
MAKEDAY1.VOC,20287
SOHELP02.VOC,12791
VACATN01.VOC,30572
YIPPIE01.VOC,18682
YOHOHO01.VOC,21654
YOHOHO09.VOC,37485
INDPNC01.VOC,17265
MDEVL01.VOC
MEAT04-N.VOC,18681
PARTY03.VOC
POSTAL01.VOC,19103
SMACK02.VOC
VOCAL02.VOC
BEBACK01.VOC,5862
GETCRAP1.VOC,14673
GUYSUK01.VOC,11389
SLACKER1.VOC,17782
GOAWAY.VOC
GRABBAG.MID
STALKER.MID
DETHTOLL.MID,7185
STREETS.MID
WATRWLD1.MID,25371
SNAKE1.MID
THECALL.MID
STORM.MID
FATCMDR.MID
GUTWRNCH.MID,45372
NAMES.MID
GLOOMY.MID
FUTURMIL.MID,49106
INTENTS.MID
INVADER.MID
SUBWAY.MID
AHGEEZ.MID
233C.MID
ALFREDH.MID
ALIENZ.MID
GOTHAM.MID
INHIDING.MID,49695
LORDOFLA.MID,39852
PIZZED.MID
ROBOCREP.MID,12089
SPOOK.MID
STALAG.MID
URBAN.MID
WHOMP.MID
XPLASMA.MID
BRIEFING.MID,8902
MISSIMP.MID
WAREHAUS.MID,62150
BAKEDGDS.MID,15857
PREPD.MID
CF.MID
LEMCHILL.MID,34541
LAYERS.MID
FLOGHORN.MID,4351
POB.MID
DEPART.MID
RESTRICT.MID,20825
TILES000.ART,1764538
TILES001.ART,1687911
TILES002.ART,847094
TILES003.ART,1113891
TILES004.ART,1147073
TILES005.ART,934595
TILES006.ART,587951
TILES007.ART,1054311
TILES008.ART,592057
TILES009.ART,1269998
TILES010.ART,2281496
TILES011.ART,57815
TILES012.ART,1060417
TILES013.ART,998283
TILES014.ART,6160
TILES015.ART,6160
TILES016.ART,1858901
TILES017.ART,722612
TILES018.ART,1490897
TILES019.ART,867463
E1L3.MAP
E1L4.MAP
E1L5.MAP
E1L6.MAP
E1L7.MAP
E2L1.MAP
E2L2.MAP
E2L3.MAP
E2L4.MAP
E2L5.MAP
E2L6.MAP
E2L7.MAP
E2L8.MAP
E2L9.MAP
E2L10.MAP
E2L11.MAP
E3L1.MAP
E3L2.MAP
E3L3.MAP
E3L4.MAP
E3L5.MAP
E3L6.MAP
E3L7.MAP
E3L8.MAP
E3L9.MAP
E3L10.MAP
E1L1.MAP
E1L2.MAP
E1L8.MAP
E3L11.MAP
E4L1.MAP
E4L2.MAP
E4L3.MAP
E4L4.MAP
E4L5.MAP
E4L6.MAP
E4L7.MAP
E4L8.MAP
E4L9.MAP
E4L10.MAP
E4L11.MAP
DEMO2.DMO
DEMO1.DMO
DEMO3.DMO

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Zedna

Look here at example for File functions from WinAPI UDF:

http://www.autoitscript.com/forum/index.php?showtopic=76829

#include <WinAPI.au3>


Global $pos, $nBytes
$tBuffer = DLLStructCreate("char[12]")
$iBuffer = DLLStructCreate("int")

Dim $B[5]
$File = @ScriptDir & "\MY.GRP"
$Result = FileOpen("Result.txt", 1)

; Open and check if file opened for reading OK
$GrpFile = _WinAPI_CreateFile($File, 2, 2)
If $GrpFile = 0 Then
 MsgBox(0, "Error", "Unable to open file.")
 Exit
EndIf

; Read first 12 bytes for ID
_WinAPI_ReadFile($GrpFile, DLLStructGetPtr($tBuffer), 12, $nBytes)
$FileID = DLLStructGetData($tBuffer, 1)
$pos += 12

; If $FileID does not = "KenSilverman" then file is not a true GRP
If $FileID <> "KenSilverman" Then
 MsgBox(16, "Error", "This does not appear to be a genuine .GRP file.")
 Exit
EndIf

FileWriteLine($Result, "Group file: " & $File & @CRLF)
FileWriteLine($Result, "File ID: " & $FileID & @CRLF)

; Read next four bytes as long integer for total number of files contained
_WinAPI_SetFilePointer($GrpFile, $pos)
_WinAPI_ReadFile($GrpFile, DLLStructGetPtr($iBuffer), 4, $nBytes)
$TotalNumFiles = DLLStructGetData($iBuffer, 1)
$pos += 4

FileWriteLine($Result, "Total Number of Files: " & $TotalNumFiles & @CRLF & @CRLF)

For $T = 1 To $TotalNumFiles
 ; Read next 12 bytes for filename of first file
 _WinAPI_SetFilePointer($GrpFile, $pos)
 _WinAPI_ReadFile($GrpFile, DLLStructGetPtr($tBuffer), 12, $nBytes)
 $FileName = DLLStructGetData($tBuffer, 1)
 $pos += 12

 ; Read next 4 bytes as long integer for file length
 _WinAPI_SetFilePointer($GrpFile, $pos)
 _WinAPI_ReadFile($GrpFile, DLLStructGetPtr($iBuffer), 4, $nBytes)
 $FileLength = DLLStructGetData($iBuffer, 1)
 $pos += 4

 FileWriteLine($Result, $FileName & "," & $FileLength & @CRLF)
Next

$tBuffer = 0
$iBuffer = 0
FileClose($Result)
_WinAPI_CloseHandle($GrpFile)

result:

Group file: C:\Program Files\AutoIt3\MY.GRP
File ID: KenSilverman
Total Number of Files: 4

TILES014.ART,1207332
W2DDEFS.CON,35992
ARWOLF.MAP,434302
MACHAMB.VOC,61685
Edited by Zedna

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Catdaddy

Look here at example for File functions from WinAPI UDF:

http://www.autoitscript.com/forum/index.php?showtopic=76829

This is great! Thank you, Zedna. My includes library was woefully lacking. I really enjoy being able to to move the file pointer to any position I like. This will help tremendously when I write the extractor. Again, thank you.

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Catdaddy

I doubt anyone is interested, but here is the solution I came up with for the above problem (with a heaping help from Zedna):

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <WinAPI.au3>



$Form1 = GUICreate("Unpack", 419, 244, -1, -1)
$Input1 = GUICtrlCreateInput("", 16, 40, 385, 21)
$Button1 = GUICtrlCreateButton("Search", 336, 72, 65, 25, 0)
$Label1 = GUICtrlCreateLabel("GRP File:", 16, 16, 49, 17)
$Input2 = GUICtrlCreateInput("", 16, 136, 385, 21)
$Label2 = GUICtrlCreateLabel("Folder to unpack to:", 16, 112, 99, 17)
$Button2 = GUICtrlCreateButton("Search", 336, 168, 65, 25, 0)
$Button3 = GUICtrlCreateButton("Extract", 169, 192, 89, 33, 0)
    GUISetState(@SW_SHOW)



While 1
    
    $nMsg = GUIGetMsg()
    
    Switch $nMsg
    
        Case $GUI_EVENT_CLOSE
            Exit

        Case $Button1
            $GrpFile = FileOpenDialog("Choose GRP file to extract from", @ScriptDir & "\", "GRP Files (*.grp)", 1 + 2)
            GUICtrlSetData($Input1, $GrpFile)
            
        Case $Button2
            $GrpFolder = FileSelectFolder("Choose a folder to extract to", "", 1)
            GUICtrlSetData($Input2, $GrpFolder)
        
        Case $Button3
            $File = GUICtrlRead($Input1)
            $Folder = GUICtrlRead($Input2)
            GUIDelete($Form1)
            ExitLoop
            
    EndSwitch

WEnd



Dim $Pos, $Bytes, $sFile, $hFile
$tBuffer = DLLStructCreate("char[12]")
$iBuffer = DLLStructCreate("int")



;Open and check if file opened for reading OK
$GrpFile = _WinAPI_CreateFile($File, 2, 2)
If $GrpFile = 0 Then
    MsgBox(0, "Error", "Unable to open file.")
    Return
EndIf

;Read first 12 bytes for ID
_WinAPI_ReadFile($GrpFile, DLLStructGetPtr($tBuffer), 12, $Bytes)
$FileID = DLLStructGetData($tBuffer, 1)
$Pos += 12

;If $FileID does not = "KenSilverman" then file is not a true GRP
If $FileID <> "KenSilverman" Then
    Exit
EndIf

;Read next four bytes as long integer for total number of files contained
_WinAPI_SetFilePointer($GrpFile, $Pos)
_WinAPI_ReadFile($GrpFile, DLLStructGetPtr($iBuffer), 4, $Bytes)
$TotalNumFiles = DLLStructGetData($iBuffer, 1)
$Pos += 4

ProgressOn("Extracting", "Filename", "0 percent")

Dim $IntFile[$TotalNumFiles + 1]
Dim $FileLen[$TotalNumFiles + 1]
$IntFile[0] = $TotalNumFiles

For $T = 1 To $TotalNumFiles
    
    ;Read next 12 bytes for filename of first file
    _WinAPI_SetFilePointer($GrpFile, $Pos)
    _WinAPI_ReadFile($GrpFile, DLLStructGetPtr($tBuffer), 12, $Bytes)
    $FileName = DLLStructGetData($tBuffer, 1)
    $IntFile[$T] = $FileName
    $Pos += 12
    
    ;Read next 4 bytes as long integer for file length
    _WinAPI_SetFilePointer($GrpFile, $Pos)
    _WinAPI_ReadFile($GrpFile, DLLStructGetPtr($iBuffer), 4, $Bytes)
    $FileLength = DLLStructGetData($iBuffer, 1)
    $FileLen[$T] = $FileLength
    $Pos += 4
 
Next

;Write archived files to selected folder
For $L = 1 To $TotalNumFiles
    
    ;Read each packed file in archive to $ExFile buffer
    _WinAPI_SetFilePointer($GrpFile, $Pos)
    $fBuffer = DLLStructCreate("byte[" & $FileLen[$L] & "]")
    _WinAPI_ReadFile($GrpFile, DLLStructGetPtr($fBuffer), $FileLen[$L], $Bytes)
    $ExFile = DLLStructGetData($fBuffer, 1) ;<=== Buffer that holds current file
    $Pos += $FileLen[$L]
        
    ;Write packed file to selected folder as $IntFile filename  
    $sFile = ($Folder & "\" & $IntFile[$L])
    DLLStructSetData($fBuffer, 1, $ExFile)
    $hFile = _WinAPI_CreateFile($sFile, 1)
    _WinAPI_WriteFile($hFile, DLLStructGetPtr($fBuffer), $FileLen[$L], $Bytes)
    _WinAPI_CloseHandle($hFile)
    
    $Perc = Round(($L/$TotalNumFiles * 100), 0)
    ProgressSet($Perc, $Perc & " percent", $IntFile[$L])    
        
Next

$fBuffer = 0
$tBuffer = 0
$iBuffer = 0
$Pos = 0
_WinAPI_CloseHandle($GrpFile)
ProgressOff ( )

In order for this to run correctly you will need to add the contents of Zedna's files above to your Constants.au3 and WinAPI.au3 files in your Includes folder. And, of course, you will need a GRP file from DukeNukem.

This will be incorporated into the launcher I am writing for EDuke32. Anyone interested in running Duke3D natively in Windows (without DosBox) you should check it out here: https://eduke32.com

I know it's an old game but I've got a soft spot for the classics. Enjoy.

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