NAME

       penetrate - simulates a classic arcade shooting game

SYNOPSIS

       penetrate   [--display   host:display.screen]   [--root]   [--window]  [--window-id  number]  [--install]
       [--noinstall] [--visual visual] [--bgrowth microseconds] [--lrate number] [--smart number] [--fps]

DESCRIPTION

       Penetrate simulates the arcade classic with the cities and the stuff  shooting  down  from  the  sky  and
       stuff.   The  computer  plays  against  itself,  desperately  defending  the forces of good against those
       thingies raining down.  Bonus cities are awarded at ever-increasing intervals.  Every five levels appears
       a  bonus  round.  The computer player gets progressively more intelligent as the game progresses.  Better
       aim, more economical with ammo, and better target selection.  Points are in the bottom  right,  and  high
       score is in the bottom left.  Start with -smart to have the computer player skip the learning process.

OPTIONS

       --display host:display.screen
               Specifies which X display we should use.

       --root  Draw on the root window.

       --window-id number
               Draw on the specified window.

       --window
               Draw on a newly-created window.  This is the default.

       --install
               Install a private colormap for the window.

       --noinstall
               Don't install a private colormap for the window.

       --visual visual
               Specify  which  visual  to  use.   Legal  values are the name of a visual class, or the id number
               (decimal or hex) of a specific visual.  Possible choices include

               default,  best,  mono,  monochrome,  gray,  grey,  color,  staticgray,  staticcolor,   truecolor,
               grayscale, greyscale, pseudocolor, directcolor, number

               If  a  decimal  or  hexadecimal  number  is  used,  XGetVisualInfo(3X) is consulted to obtain the
               required visual.

       --foreground color
               Specifies the default foreground color.

       --background color
               Specifies the default background color.

       --bgrowth integer
               Specifies the growth rate of the bomb explosions.

       --lrate integer
               Set the initial rate of laser fire.

       -smart  Have the computer player skip the learning process.

       --fps   Display the current frame rate and CPU load.

BUGS

       The layout of the screen isn't quite the same as the game this program tries to emulate.   In  this  this
       program,  the  missiles come out of the cities; when really, there are supposed to be three missile bases
       on hills, with the cities in the valleys between them.

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to get the  name  of  a  resource  file  that  overrides  the  global  resources  stored  in  the
               RESOURCE_MANAGER property.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO

       X(1), xscreensaver(1)

COPYRIGHT

       Copyright  ©  1999  Adam Miller.  Permission to use, copy, modify, distribute, and sell this software and
       its documentation for any purpose is hereby granted without fee, provided that the above copyright notice
       appear  in all copies and that both that copyright notice and this permission notice appear in supporting
       documentation.  No representations are made about the suitability of this software for any  purpose.   It
       is provided "as is" without express or implied warranty.

AUTHOR

       Adam Miller <adum@aya.yale.edu>, 1999.