Where I talk about game development and other tech stuff.
Friday, July 13, 2012
XNA Tutorial: Smooth Sprite Rotation
Its been a while since my last post. I've bee pretty busy since. You may not have heard but me and my friends have started a games company(Unlucky For Some Studios). So that's been keeping me busy. Any ways a while ago I wrote a tutorial about sprite rotation. Recently I have been experimenting with lerping rotation values so the sprite appears to be rotating smoothly. I have been using the MathHelper.Lerp method to do this.
Initially I thought this would work perfectly however I was getting a weird behaviour shown in the following video.
I have a pretty good idea as to what is causing this but explaining it would be kinda hard. I have said may times that I am just crap at Maths and was unable to figure out this problem myself. After a very long google search I managed to find the solution. I thought I would write a blog post about it and hopefully it will make it easier for other people to find and fix.
I used the following code that I found on app hub.
After I used these methods I got the following result which was exactly what I originally set out to do. Instead of calling MathHelper.Lerp you now call CurveAngle and pass in the same parameters.
I hope this helps someone as it helped me. Also give our game a go.