Gravity Wars

  by Sohrab Ismail-Beigi  completed 4/23/89
     SYSOP of The 3D Graphics BBS
     300/1200/2400 baud, N-8-1 Full duplex
     (201) 444-4154

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Note:  This game requires a VGA display capable of the 640x480x16 color mode.
       The program does no checking, so don't run it without VGA 640x480x16.
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INCLUDED FILES:

 Length   Name
 -------  ------
    9519  GRAVWARS.DOC   -  This file
   32172  GRAVWARS.PAS   -  Turbo Pascal 4.0 Source Code
   42640  GRAVWARS.EXE   -  The actual game program
    5139  EGAVGA.BGI     -  Required VGA driver
    5452  SANS.CHR       -  Required Font
 -------
   94922

NOTE:  EGAVGA.BGI and SANS.CHR must exist in the same directory that
       GRAVWARS.EXE is running for the program to run properly

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GENERAL OVERVIEW:

     Gravity Wars is a two-player game (or one-player if he plays against
himself.)  The players choose ships (one the Enterprise, the other Klingon) and
try to shoot down each other by specifying angles and initial velocities for the
missiles.
     Missiles move under the influence of the gravitational fields of the
various planets in the Gravity Wars universe.  The planets are the spherical
and colored (Red, Green, or Blue) with each color representing a density:
Red=1.0, Green=1.5, Blue=2.0.  The force of gravity is the well known inverse
square law, namely F=GMm/(r^2) (where ^ means exponent.)
     There are also black holes (haha!) which appear as the blacking out of the
stars in the background (you have to watch for them when the scene is drawn.)
They are not very massive, and from far away, they act like small planets.  But
when missiles approach them, their behavior becomes quite erratic, SO BE CAREFUL
WHEN FIRING CLOSE TO A BLACK HOLE!