fixed point arithmetic on the iPhone
April 9th, 2008 - 2 comments - Add your comment
So I've started to check out what's involved in making games on the iPhone, you know like OpenGL ES, Open AL etc - the usual stuff... In amongst my fooling around, I've started to create a Vector class for doing some basic physics. While I was researching how to do that correctly, I came across a realization. The ARM processor of the iPhone and iPod Touch doesn't have an FPU (Floating Point Unit) so to get any decent performance out of a game, i'll have to get to grips with Fixed Point maths (again).
If you're looking to get up to scratch on that too, this might come in handy.
There's a helluva lot to learn for anyone making the move from the desktop to the iPhone... Well it's not as simple as a lot of people have made it out to be.
I think this is the most geeky post i've ever written.

April 23rd, 2008 at 04:47 PM
Jeeesus Christ man… and I thought revising GCSE maths was bad! What the hell does all that stuff mean?
May 1st, 2008 at 05:39 PM
I haven’t a clue… My geekiness is just an act…
;-)