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1987-12-18
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3KB
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73 lines
December 19, 1987
CLONE INVADER ///
Copyright (c) 1987 Gary Quiring.
All Rights Reserved
Clone Invader has been under some major rewriting for the last 6
months. Version 2 of the game had many bugs and would only run on
a PC/AT or ATT 6300. Version 2 also had a mouse driver built in
which has been removed because of compatibility problems.
Originally the game was written in Quick Basic 2.0 then ported to
Turbo Basic 1.0 (Turbo Basic has way too many bugs) and is now back
to Quick Basic 4.0.
Version 3 now offers a one or two player game and much smoother
play. One of the more difficult parts of writing this game was to
find a real SPACE INVADERS machine. Almost all of the arcade rooms
in New Jersey don't have one anymore. Luckily I was able to find
one on the Long Branch boardwalk.
Clone Invader will automatically look for an EGA card - if it
finds one it will default to using the EGA mode (16 colors). For
users with an 8088/EGA system you will find the game too slow.
Pressing the (!) exclamation mark when the message "Press any key"
comes up will force the CGA mode for a faster game.
There are options that can be set by using the environment. At
times Clone Invader may not be able to find your EGA or VGA card
depending on the brand. Also I have no idea how to sense for a
PS/2 machine. At the dos prompt you can type the following
commands to "tune" Clone Invader to your own hardware. If the game
is too fast on a 80386 computer please let me know, as I have no
access to a 386 machine. (These commands are not case sensitive).
SET INV_DISPLAY=CGA (Forces CGA mode)
SET INV_DISPLAY=EGA (Forces EGA mode)
SET INV_SPEED=SLOW (8088/slow PC)
SET INV_SPEED=MEDIUM (80286/PC AT or TURBO PC/8086)
SET INV_SPEED=FAST (80386)
I would like to give a special thanks to Ben Broder for writing the
keyboard driver for Clone Invader. This routine really makes the
game much more playable. It provides instant auto-repeat of the
base movement keys and also shuts off the repeat feature for the
fire key. When the game was using the standard INKEY$ routine the
base movement was terrible.
If the game should lock up try removing any ram resident programs.
The keyboard driver disables the normal keyboard interrupt. I have
found that Sidekick and Superkey can occasionally cause problems.
Clone Invader will save the high score in the cloninv.exe file
unless the filename is renamed or executed from a subdirectory that
you are not currently in.
This program may not be sold or copied for a profit without prior
written permission from Gary Quiring.
Any comments or problems please write to:
Gary Quiring
37 Essie Drive
Matawan, NJ 07747