Comments on: Time-based Animation http://makemacgames.com/2005/10/26/time-based-animation/ The Adventure Fri, 21 Nov 2008 09:03:43 +0000 http://wordpress.org/?v=2.6.3 By: Jon Trainer http://makemacgames.com/2005/10/26/time-based-animation/#comment-93 Jon Trainer Thu, 27 Oct 2005 13:56:04 +0000 http://makemacgames.com/?p=89#comment-93 Thanks Rob, I may take you up on that offer. I'll let you know when I'm ready for my first round of testing. Hopefully, it'll be sooner than later. Thanks Rob, I may take you up on that offer. I’ll let you know when I’m ready for my first round of testing. Hopefully, it’ll be sooner than later.

]]> By: Rob Drimmie http://makemacgames.com/2005/10/26/time-based-animation/#comment-92 Rob Drimmie Thu, 27 Oct 2005 13:44:55 +0000 http://makemacgames.com/?p=89#comment-92 Jon, I use a 600MHz iBook with 512MB of RAM. If you ever want to get some results from a rapidly aging system, you now have my email address. I'd love to help you with any benchmarking you might want to do, etc. Jon, I use a 600MHz iBook with 512MB of RAM. If you ever want to get some results from a rapidly aging system, you now have my email address. I’d love to help you with any benchmarking you might want to do, etc.

]]> By: Jon Trainer http://makemacgames.com/2005/10/26/time-based-animation/#comment-91 Jon Trainer Wed, 26 Oct 2005 22:01:23 +0000 http://makemacgames.com/?p=89#comment-91 I'm using floating points for positioning. The <code>NSPoint</code> object in Cocoa tracks (x,y) coordinates as <code>float</code> data types. I’m using floating points for positioning. The NSPoint object in Cocoa tracks (x,y) coordinates as float data types.

]]> By: GBGames http://makemacgames.com/2005/10/26/time-based-animation/#comment-90 GBGames Wed, 26 Oct 2005 21:21:23 +0000 http://makemacgames.com/?p=89#comment-90 I think I need to work on my similar code. The sprite library I use works with integer positions, but I need to calculate the the movement in double values for the precision. Otherwise, the objects would be stuck in one spot due to the loss in precision. The problem is that I notice the movement jerks every so often, and I think it is because it adds or subtracts an extra pixel every so often. I could be wrong. Are you using floating points for your positioning and movement as well? I think I need to work on my similar code. The sprite library I use works with integer positions, but I need to calculate the the movement in double values for the precision. Otherwise, the objects would be stuck in one spot due to the loss in precision.

The problem is that I notice the movement jerks every so often, and I think it is because it adds or subtracts an extra pixel every so often. I could be wrong. Are you using floating points for your positioning and movement as well?

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