From: Thijs Leeflang Date: 2009-11-14T08:33:14+09:00 Subject: Trajectories hello, im having a problem with trajectories, im trying to make an arrow like movement i did find this but it's way over my head http://www.gamedev.net/reference/programming/features/physicsch6/ch06.pdf i have these values, @x and @y is the x and y the image is drawn @targetx = targetx @targety = targety @fromx = fromx @fromy = fromx @x = fromx @y = fromy can anybody help me with this? thanx -- Posted via http://www.ruby-forum.com/.