Best way to iterate through node children? « cocos2d for iPhone

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Best way to iterate through node children?

(6 posts) (5 voices)

Started 2 years ago by derekvanvliet
Latest reply from TD

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derekvanvliet
Member

I want to iterate through the children of a layer. What is the best way to do this? I tried retrieving the layer's children array property but that didn't work.

Posted 2 years ago #
jotajota
Member

What I do is:

for(id *item in myLayer.children) { ... //and if I want to make sure the child is the type I want: if([item isKindOfClass:[Sprite class]]) {...} }

Posted 2 years ago #
Rob Segal
Member

Conceivably that should work jota but when I try it I am getting the error...

error: Type of accessor does not match the type of property "children".

Ever encountered that before?

Posted 2 years ago #
Codemattic
Moderator

What version of cocos are you using? Make sure in CocosNode.h its defined as:

@property (readonly) NSArray *children;

Posted 2 years ago #
jotajota
Member

@RobSegal
I'm afraid I've never seen that error before. Perhaps you can post the code where you define your parent and how you add the children to it?

Posted 2 years ago #
TD
Member

Got the same error with GCC 4.2 and SDK 3. A quick googling found this:
http://lists.apple.com/archives/Xcode-users/2008/Jul/msg00291.html

I changed in CocosNode.h from NSArray the property to:
@property (readonly) NSMutableArray *children;

And now it works.

(wtf???)

Posted 2 years ago #

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