how can I use animation in cocos2d?

iphone objective-c cocoa-touch animation cocos2d-iphone
Md Nasir Uddin picture Md Nasir Uddin · Jan 28, 2009 · Viewed 25.7k times · Source

I am trying to develop a Roulette game for iPhone. How can I animation (spin) the Roulette board?

Answer

Stanislav picture Stanislav · Jul 26, 2009

It's quite simple in Cocos2D:

[sprite runAction:[RotateBy actionWithDuration:dur angle:360]];

to make one turn or 

id action = [RepeatForever actionWithAction: [RotateBy actionWithDuration:dur angle:360]];
[sprite runAction:action];

and 

[sprite stopAction:action];

if you need to rotate continuously.

Don't forget to make sure that sprite transformAnchor is set to center of the image. And I guess next question should arise - how to make it stop smoothly ;)

More on actions: http://lethain.com/entry/2008/oct/03/notes-on-cocos2d-iphone-development (it's for older version, so it uses deprecated 'do' instead of 'runAction')

Related questions

How to load a UIView using a nib file created with Interface Builder

I'm trying to do something a bit elaborate, but something that should be possible. So here is a challenge for all you experts out there (this forum is a pack of a lot of you guys :) ). I'm creating a Questionnaire "…

Read More
How do I draw a shadow under a UIView?

I'm trying to draw a shadow under the bottom edge of a UIView in Cocoa Touch. I understand that I should use CGContextSetShadow() to draw the shadow, but the Quartz 2D programming guide is a little vague: Save the graphics …

Read More
Proper way to exit iPhone application?

I am programming an iPhone app, and I need to force it to exit due to certain user actions. After cleaning up memory the app allocated, what's the appropriate method to call to terminate the application?

Read More