Provided by: xscreensaver-data-extra_5.15-2ubuntu1_amd64 bug

NAME

       penetrate - simulates a classic arcade shooting game

SYNOPSIS

       penetrate   [-display   host:display.screen]  [-root]  [-window]  [-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 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.

       See http://www.mame.net/ for details.

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.