Doofus Game Data Format

Doofus Game Data Format

Format type	Archive
Max files	Unlimited
File Allocation Table (FAT)	External
Filenames?	No
Metadata?	None
Supports compression?	Yes
Supports encryption?	No
Supports subdirectories?	No
Hidden data?	No
Games	Doofus

The Doofus Game Data Format is used by Doofus to store much of the game's data.

File format

Signature

There is no signature, but since some file entries begin with the letters "GB", this could be used to identify files, by checking to see whether these characters appear at the expected locations. The music files also start with "TBSA0.01".

FAT

The File Allocation Table (FAT) is stored in doofus.exe.

EXE version	FAT offset	Identification method
1.0	0x15372	0xFB10 contains text "The Bone Shaker Architect", after reversing PKLite compression

The FAT consists of the following structure, repeated 65 times. There are another four 0x00 bytes following this, but it is unknown whether these belong to the FAT (as a final terminator) or whether they belong to the data following the FAT.

Data type	Name	Description
UINT16LE	length	Length of file data, in bytes
UINT16LE	type	File type
BYTE[4]	padding	Always 0x00

The first file begins at offset 0 in gamedata.g-d. To calculate the offsets of subsequent files, the length fields must be totalled.

The type field appears to contain a code representing the type of data stored at that file's location. Known types are:

Code	File type
0x0000	Generic data
0x1636	! Unknown
0x2376	! Unknown
0x3276	! Unknown
0x3F2E	! Unknown
0x3F64	! Unknown
0x48BE	! Unknown
0x43EE	! Unknown
0x59EE	TBSA Music Format

Files

#0: Config

The first file contains configuration data.

Data type	Name	Description
UINT8	option1	0=70Hz videomode, 1=55Hz videomode
UINT8	option2	0=scrollmode-1, 1=scrollmode-2
UINT8	option3	0=keyboard, 1=keyboard+joystick
UINT8	option4	bitfield: 0x80=turbo mode, 0x08=samples, 0x04=music, 0x03=always set. Turbo mode only allowed with samples on.
char[8]	playerName	Player's name, padded with spaces and not null-terminated
char[8]	password	Level password, padded with spaces and not null-terminated

#1: High scores

Data type	Name	Description
UINT32LE[7]	score	Score for each of the seven high-score entries
char[20][7]	highName	Name for each of the seven high-score entries (20 chars each, not null-terminated)

Each high score entry begins with a space, a number and a full-stop, and is padded with dashes and a final space, e.g. " 1.example ------ ". The dashes are replaced with the actual score when displayed in-game.

Compressed/encrypted files

These files all start with a particular header.

Data type	Name	Description
char[2]	signature	"GB"
UINT16LE	length	Length of data in file
UINT16LE	unknown
UINT16LE	unknown2
BYTE[47]	padding	Bring total structure up to 55 bytes
BYTE[length]	content	Actual data for this file

Music files

The music files start with the characters "TBSA0.01". This probably stands for "The Bone Shaker Architect", the name of the music player library. They are in TBSA Music Format.

Tools

The following tools are able to work with files in this format.

Name	Platform	Extract files?	Decompress on extract?	Create new?	Modify?	Compress on insert?	Access hidden data?	Edit metadata?	Notes
Camoto	Linux/Windows	Yes	No	No	Yes	No	No	N/A
Camoto/gamearchive.js	Any	Yes	No	Yes	Yes	No	No	N/A

Credits

This file format was reverse engineered by Malvineous. If you find this information helpful in a project you're working on, please give credit where credit is due. (A link back to this wiki would be nice too!)