I am programming a game where i need to have an arrow fly across the screen - and i have no idea how to calculate the arc of its flight path.

does anyone have any suggestions?

you could ponder around with pow(x, 2), or use sin on the z element to make your arrow go up and down, or if you're really inclined use beziers. (hint: use sin).

on my website in the demos area , i have a mortar cannon demo , that deals with arc of decent. its writen in free lite c 1.70

@badapple:

I downloaded your demo, but it is in .7z format? Is that a type of compression? how do i open it up to look at your code?

google 7zip , its a free compression tool like winzip but better

and your in luck too , that demo is one of the rare ones i made that is well commented , and the read me file explains clearly how i achieved the effect. good luck with your game