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- A Short History of Empire by Chris Gray
-
- The first widely available version of Empire was written by Peter Langston,
- who also wrote the 'wander' adventure game system. It was available, as
- far as I know, only in PDP-11 object code format for running under UNIX
- Version 6. I played two games with that version on a PDP-11/45 at the
- University of Alberta. The game appears to have been popular within the
- North American UNIX community, and its absence on other machines was a sore
- point. Tom Fisher took exception to this and proceeded to de-compile the
- object module into C. His version is now available and will run on most
- UNIX systems. It is difficult to modify, however, because much of its
- structure reflects the decompilation process - it is a maze of labels and
- goto's. It also reflects the memory limitations of the PDP-11 and is
- structured as a set of 7 different programs which are accessed as overlays.
- Another version of Empire, presumably a re-implementation, has been done
- by people at Berkeley (I think). I've never seen this version, so can't say
- much about it, except to say that it has been augmented with farms,
- bombers, tanks, nuclear weapons, etc. I have recently heard of another
- project to re-implement Empire, in which the sources will explicitly NOT be
- made available. The sources to this Draco version are available now. Chris
- Thierman took it upon himself to implement Empire for the University of
- Alberta's Amdahl mainframe about 18 months ago. The project proceeded, but
- was never completed. We both bought Amigas about that time and eventually I
- had Draco ported and Chris was using it a bit. He decided to port Empire to
- the Amiga and requested my aid in doing a translation from QC (a compiler of
- mine for the 360/370 series) to Draco. I agreed and soon found myself
- headlong in the implementation of Empire.
-