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                A S T E R O I D S

Asteroids is a fairly blatant clone of the arcade game of
the same name.  You have a ship which you fly around; your
goal is to eliminate asteroids.

When hit with a shot, the larger sizes of asteroids break
into smaller ones; the smallest size vanishes.  To finish
one screen and go on to the next, destroy all asteroids.

You get points two ways.  One is shooting things.  The
other is the bonus.  Each screen starts with a bonus of
3600 points per large asteroid; this bonus counts down at
the rate of 60 per second.  Any amount remaining when you
finish the screen is added to your score.  Time spent
waiting for you to press FIRE when beginning a level, or
after you die, is not charged against your bonus.
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The keys used as controls are:

%kL                  % Turn ship to the left
%kR                  % Turn ship to the right
%kH                  % Hyperspace
%kT                  % Thrust
%kF                  % Fire

In addition, you can press %KE at any time to exit.  (If
you do this during a game, and your score is good enough to
go on the high score list, a random set of initials will be
chosen for you.)

If you get on the high score list, when entering your
initials, the turn-left and turn-right keys are redefined
to shift through the various letters.  The FIRE key enters
a letter and goes on to the next (or registers the score).
You cannot use the normal letter keys on the typewriter
portion of the keyboard.
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Hyperspace simply teleports you to a random location on the
screen.  This is useful if you need to get out of the way
of something *right now*, or if you have lost control of
the ship (when you come out of hyperspace, you are not
moving).  The danger is that there is no guarantee the exit
point is safe - you could come out right in front of (or
even right on top of) a rock.

There is also a setup mode.  This is useful if you feel you
need practice at some aspect of the game; it allows you to
control many details of the game's operation.  Of course,
using it means that your score will not be placed on the
high-score list; this is indicated by parentheses around
the number.  Press %K9 to invoke it.  (Details are not
given here.  You are invited to experiment.)
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