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.