Simple Gesture Recognition

I've ported this from construct classic, original was made by R0j0hound

Thought i'd post it here aswell so it won't go down in another thread :)

<img src="http://oi55.tinypic.com/e65a9e.jpg" border="0" />

and the .capx:

dl.dropbox.com/u/45711709/gesture.capx

Ize I'm quite interested in this, and would like to make my own gestures, but failed to decipher this line:

floor((int(45*0.5+360+Box.Angle)%360)*8/360)

Would you mind elaborate this a bit? Thank you in advance.

Edit: It seems that I have been able to understand the concept, but not quite that particular line. I think

round(Box.Angle/45)

would have made a much more simple line, though I might be unaware of any drawback.

Regardless, I would be using some of your lines, more or less, with credits being given to you, of course. Do let me know if there is a particular name you would like to display, or any related website/portfolio.

to be honest im no math wizard like R0J0hound and just ported this 1:1 from construct classic... it works... don't ask me how and why :D

link doesnt work