Hiya Mike

>>Pretty interesting stuff. I think there's another way to do these calcs. Using Sin/Cos you can determine the x and y. You can build a table of sin/cos values in an array and get the value based on the angle between the two objects. This is supposed to be much faster than SQRT.
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>Do you suppose you could post an alternate algorythm that we could compare?
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>I used the Pythagorean theorem just because it was the simplest, my trig is sooooo rusty. :-)

I'll be my trig is rustier than your trig. But Hilmar already explained the process. I don't have the time to modify your routine right now. Sorry.