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       penetrate - simulates a classic arcade shooting game


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


       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.


       -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 a private colormap for the window.

               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.


       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 for details.


       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


       Adam Miller <>, 1999.

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