This project contains 60 maps (levels or mazes) for the Sokoban game. The maps have been extracted from the binary file of a Sokoban implementation for DOS called pusher. The pushermaps.c is the automated map extractor.

There is a couple of screenshots of pusher.exe running in DOSBox.

Type make to build the map extractor and run it. The extractor will parse the pusher.exe file, extract the maps and print them to the standard output. For example:

*************************************
Maze: 1
File offset: 148C, DS:00FC, table offset: 0000
Size X: 22
Size Y: 11
End: 14BD
Length: 50

    XXXXX
    X   X
    X*  X
  XXX  *XXX
  X  *  * X
XXX X XXX X     XXXXXX
X   X XXX XXXXXXX  ..X
X *  *             ..X
XXXXX XXXX X@XXXX  ..X
    X      XXX  XXXXXX
    XXXXXXXX

*************************************
Maze: 2
File offset: 14BE, DS:012E, table offset: 0032
Size X: 14
Size Y: 10
End: 14E8
Length: 43

XXXXXXXXXXXX
X..  X     XXX
X..  X *  *  X
X..  X*XXXX  X
X..    @ XX  X
X..  X X  * XX
XXXXXX XX* * X
  X *  * * * X
  X    X     X
  XXXXXXXXXXXX

*************************************

and so on.

In the ./maps subdirectory there are two files:

• sokoban-maps-60-plain.txt with the maps in the plain text form.
• sokoban-maps-60-compressed.txt with the maps in the compressed from as they are in the pusher.exe file.

The maps are compressed by a Huffman-like method explained at the beginning of the pushermaps.c file.

In the ./disasm subdirectory there is a file called pusher.lst containing a disassembled listing of the pusher.exe executable.

You can run pusher.exe via DOSBox:

DOSBox -exit pusher.exe

Tested on Windows 7 and Mac OSX 10.7.4 with DOSBox 0.74.