tetris1k - entry for 2002 Minigame Compo

Public domain by Russell Marks (rus@svgalib.org)

for the 1K ZX81 (should also work on 16K machines)


tetris1k is Yet Another Tetris clone (see last year's entries to see
what I mean ;-)). It's nothing special, but since I already had the
thing written I thought I might as well enter it, if only to make sure
the ZX81 was represented in the competition.

The controls are:

S   rotate
D   drop
K   left
L   right

The only prompt you get for "press a key to play" is a question mark
in the top-left of the screen. :-)

I had to cut some rather major corners in the implementation, as you'd
imagine, and the obvious one is that there's no score display - I
didn't have the room to add this and still run on a unexpanded ZX81.
And it would be a bit silly to have a 1k game which didn't work on the
1k version of the machine, wouldn't it? :-)

-Rus.

PS. The source, suitable for assembly under Unix/Linux using zmac, is
here in src.tar.gz.