ANN Nine Ball with Spin (English)

[Jim Hurley]

I couldn't resist adding spin (English) to Nine Ball.

There are some things you can't do without it. For example there are 
occasions when you can't sink a ball without scratching--unless you 
can put spin on the cue ball. It is also needed on occasion to 
position the cue ball for the next shot.

The spin had ramifications in so many areas. I think I caught them 
all, but there may be some hangover. (The last thing I checked was 
the cue ball striking the cushion with right spin. After it hit the 
cushion ALL the other balls began to move. Run Rev has this nasty 
habit of literally interpreting the code instead of what you meant. 
I fixed this, but other problems may be lurking.)

Instructions for using spin are in the "Instructions" window. 
Basically, use the arrow keys to add a short red arrow to the end of 
the velocity vector. The magnitude and direction of the red arrow 
defines the magnitude and direction of the spin to be added to the 
velocity.

So I hope this works:

go url "http://home.infostations.net/jhurley/NineBallWithSpin.rev"

I have taken the liberty of including Scott Rossi's wonderful graphics.

Jim