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https://github.com/devshane/zork

The DUNGEON (Zork I) source
https://github.com/devshane/zork

adventure-game dungeon game old-school text-adventure

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The DUNGEON (Zork I) source

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README 

        
```

Welcome to Dungeon.			This version created 11-MAR-91.

You are in an open field west of a big white house with a boarded

front door.

There is a small mailbox here.

>

```

# DUNGEON (Zork I)



Public Domain source code to the original DUNGEON game (Zork I). Released to the PD by Infocom. Includes 

source files, headers, and information.



```

$ make

```



## History of the C Implementation of Dungeon



This version of dungeon has been modified from FORTRAN to C.  The

original was written in DEC FORTRAN, translated from MDL.  It was then

translated to f77 for UN*X systems, from which it was translated to C.

The C translation was done with the help of f2c, the FORTRAN to C

translator written by David Gay (AT&T Bell Labs), Stu Feldman

(Bellcore), Mark Maimone (Carnegie-Mellon University), and Norm

Schryer (AT&T Bell Labs).



I. From the original documentation...



To: Dungeon Players

From: "The Translator"

Subj: Game Information

Date: 8-OCT-80



This is the first (and last) source release of the PDP-11 version of 

Dungeon.



Please note that Dungeon has been superceded by the game ZORK(tm).

The following is an extract from the new product announcement for

ZORK in the September, 1980 issue of the RT-11 SIG newsletter:



  "'ZORK:  The Great Underground Empire - Part I' ...was developed

   by the original authors based on their ZORK (Dungeon) game for

   the PDP-10.  It features a greatly improved parser;  command

   input and transcript output files;  SAVEs to any device and

   file name;  and adaptation to different terminal types,

   including a status line on VT100s.  Note:  this is not the

   FORTRAN version that has been available through DECUS.  This

   version has been completely rewritten to run efficiently on

   small machines - up to 10 times as fast as the DECUS version.



   ...ZORK runs under RT-ll, HT-ll, or RSTS/E and requires as

   little as 20K words of memory and a single floppy disk drive.

   The game package, consisting of an RX01-format diskette and

   an instruction booklet, is available from Infocom, Inc.,

   P.O. Box 120, Kendall Station, Cambridge, Ma. 02142."



ZORK(tm) is a trademark of Infocom, Inc.  It is available for several

popular personal computers as well as for the PDP-ll.



## Summary



   Welcome to Dungeon!



   Dungeon is a game of adventure, danger, and low cunning.  In it

you will explore some of the most amazing territory ever seen by mortal

man.  Hardened adventurers have run screaming from the terrors contained

within.



   In Dungeon, the intrepid explorer delves into the forgotten secrets

of a lost labyrinth deep in the bowels of the earth, searching for

vast treasures long hidden from prying eyes, treasures guarded by

fearsome monsters and diabolical traps!



   No DECsystem should be without one!



   Dungeon was created at the Programming Technology Division of the MIT

Laboratory for Computer Science by Tim Anderson, Marc Blank, Bruce

Daniels, and Dave Lebling.  It was inspired by the Adventure game of

Crowther and Woods, and the Dungeons and Dragons game of Gygax

and Arneson.  The original version was written in MDL (alias MUDDLE).

The current version was translated from MDL into FORTRAN IV by

a somewhat paranoid DEC engineer who prefers to remain anonymous.



   On-line information may be obtained with the commands HELP and INFO.



II. DEC FORTRAN to f77 Conversion (17-nov-81)



The conversion from DEC FORTRAN to Unix f77 was done by Randy

Dietrich, Lynn Cochran and Sig Peterson.  Much hacking was done to get

it to fit in the limited address space of a PDP-11/44 (split I/D).

Suffice it to say that by leaving out the debugging package and not

linking in the f77 i/o library they managed to get it to run.



III. PDP to VAX (dec-85)



Based on the work of Randy, Lynn and Sig, Bill Randle folded in the

full save/restore functions and the game debugging package (gdt) into

the pdp version to create a Vax/Unix version.  This version also uses

f77 i/o, thus eliminating the extra speak and listen processes needed

on the pdp.



IV. Cleanup I (11-dec-86)



John Gilmore (hoptoad!gnu) cleaned up the source files by moving

most of the common declarations into include files and added

comments from the original (FORTRAN or MDL?) source.  His efforts

are greatly appreciated.



V. Cleanup II (9-feb-87)



Bill Randle ([email protected]) added the pdp dependencies back

into the Vax source files with #ifdefs in order to have just one

set of sources.  Previously, there were two sets of source: one for

the pdp and one for the Vax.  In addition, a shell escape of the

form !cmd was added and the wizard can enter the gdt without having

to recompile the source.  Finally, a man page was generated, based

on the dungeon.doc file.



VI. f77 to C (11-mar-91)



Ian Lance Taylor ([email protected] or uunet!airs!ian) used the f2c

translator to generate C source code.  The resulting code was modified

to remove the FORTRAN I/O library, to add simple more processing, and

to change the format of the database file.  Andre Srinivasan

([email protected]) help test it.  Jonathan Mark

(uunet!microsoft!jonm) made it work under MS-DOS and Microsoft C.