CANON V1

				  a

			   balistic simulation

			       game for

			DEC RAINBOW MS-DOS graphics

			     by Marc Kenig


		This program is hereby given into the public
		domain.  It should only used for fun, not
		profit.  Use it for profit and I'll get a real 
		canon and visit your house with my lawyer.


1.0 Introduction

	CANON is a game simulating the firing of a projectile at a target.
It uses the DEC Rainbow graphics board to trace out the motion of the 
projectile as it flies towards it's target.  The game is basically to see
how long it takes you to do a binary search for the correct angle of elevation
and charge (force) at which to fire the projectile. As the world is such a
stressfull place, it's nice to have somebody NOT firing back at you for a
change.

2.0 Requirements

	1) A DEC Rainbow with a graphics board.

	2) The public domain RBGRAPH.PAS if you wish to diddle with
	   this program and change parameters.

	3) Turbo-Pascal V3.0 (or higher?)

3.0 To Use

	Type CANON to DOS and answer "Y" when the program asks if you want
directions.  

4.0 To End

	Answer "N" when the program asks if you want "More?".  You can also
abort by typing Control-C at any prompt.  Unfortunately, given the way RBGRAPH
currently works, banging Control-C when the graphics board is in control of
things will just result in tired fingers.  I hope to have taken care of any
glitches which would have the program never return to a prompt, though if you
shoot straight up with the maximum power, it will take a while before the
program reprompts for input, see if it dont!

5.0 Glitches and Gotchas

	Since this is version 1, I have the right to make a few apologies:

1) The wind isn't exactly right.  OK, I must've been napping back in high 
   school when my physics teacher went over the proper formulae, and have lost
   the patience to work it out for myself from scratch.  But it mostly works 
   right.  For a suprise shoot the canon straight up in a stiff wind.  It won't
   veer.

   Sometime I'll find a non-calculus oriented physics book and look it up for
   real.  Or somebody out there can re-submit the program with the correct 
   formulae.

2) You can't blow yourself up. Yet.

3) Sometimes the program may generate nearly impossible terrain/wind 
   combinations (Perhaps 1% of the time).  Look, you can't solve every problem
   with a big gun. Abort and re-run the game.

4) This program is copied from a game I saw run ages ago on a Tektronix 4552
   "Microcomputer".  My apologies to the author of the original (remember:
   imitation is great flattery).

All that said, it can be an infectious little game anyway. Enjoy.

Thanks to Kenneth Nist for a real nice graphics package.