cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   Verisutha
   Member

   Ok, I am hoping someone can shed some light on this..

   I am trying to create a vertical scrolling menu, using a CCMenu..

   I have a CCMenu, it is sitting on a CCLayer. I thought if I used

   -(void)ccTouchesBegan:(NSSet *)touches.... {
   
   }
   
   -(void)ccTouchesMoved:(NSSet *)touches.... {
   
   }

   I would be able to see all touches, even ones that went to the CCMenuItems. This doesn't appear to be so. If I touch open space I seem to get the touch calls, but if I touch a menu item I never see the calls, not even the touchbegan.

   Are we supposed to get all the touch calls when using the NSSet methods? Looking at CCTouchDelegateProtocol.h that would be my impression.

   Any help would be appreciated.

   Posted 1 year ago #
2. 

   Karl
   Member

   Any item registered with the touch dispatcher can "claim" a touch, which means that no other node will receive the touch message after it.

   CCMenuItem claims any touches within its space.

   Posted 1 year ago #
3. 

   Verisutha
   Member

   Actually Karl you gave me an idea..

   Since I pretty much use the single touch all through my code, I figured I would change the dispatcher to handle them as separate calls, rather than ignore the other set, since I needed an over ride to scroll the entire menu.

   Now that I did that everything works perfectly..

   Posted 1 year ago #
4. 

   Verisutha
   Member

   You know it would be kind of nice if there was a 3rd set of touch handlers.. If there was a third set you could easily do the scrolling menus.

   After I modified the dispatcher, I easily implemented a scrolling layer. I might add a 3rd set of touch dispatching just so i can easily update future versions of cocos2d. When I have some time I'll have to write up something a little more formal and post the code to the project so others that might want a scrolling menu might be able to use it.

   Thanks again for the direction Karl, I really appreciate it.

   Posted 1 year ago #

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