cocos2d for iPhone

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

1. 

   tutukun
   Member

   Hi,

   I've read the apple document on obj-c @selector but the concept the selector is still pretty unclear. So far i think its somewhat like a callback?? but I might be wrong. So could anyone give me a better explaination?

   THanks :)

   Posted 2 years ago #
2. 

   jd
   Member

   It's a callback. Like in MenuItems - each one can have selector and when the item is selected, the selector method (the callback) is called. No parameters can be passed as far as I can tell.

   Posted 2 years ago #
3. 

   Codemattic
   Moderator

   You can pass parameters when calling a selector. NSObject for example has the methods:

   -performSelector:
   -performSelector:withObject:
   -performSelector:withObject:withObject:

   Posted 2 years ago #
4. 

   jd
   Member

   How would you do a menuItem selector method that accepts something like an int? I remember trying but never got it to work.

   Posted 2 years ago #
5. 

   David994A
   Member

   Here is an interesting writeup on callbacks and objective C. (Callbacks are not native to objective C)

   http://borkwarellc.wordpress.com/2007/09/13/c-callbacks-in-objc/

   Posted 2 years ago #

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