Thank you very much, Roy. ๐
(for the kind words AND the donation - you really shouldn't have!)
It was a lot of fun to put together - but I have to admit, I relied heavily on the collision code (referenced in details above). Don't think my maths would've managed come up with the right answer. ๐ต
The "fun" part was squeezing the well-formatted example code as small as poss! ๐
P.S. - Well done on getting a great score! ๐๐