cocos2d for iPhone

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

1. 

   FinnG
   Member

   Hi all,

   First off cocos2d is great! I've been lurking on these forums for a while now - they've proven to be a very useful resource.

   However, I've been trying to rewrite a section of a game I'm working on. What I'm doing involves drawing a 'network' of nodes in a tree structure and I'm currently inheriting the Atlas Sprite Manager class for one of my classes, which I've called 'DCNetwork'. I'm initializing my class with the following line:

   DCNetwork *network = [DCNetwork spriteManagerWithFile:@"devices.png"];

   However, this doesn't seem to work as intended. Inserting a breakpoint on the following line and seeing what's in 'network' tells me it's of the type AtlasSpriteManager, not DCNetwork.

   DCNetwork *network = (DCNetwork*)[DCNetwork spriteManagerWithFile:@"devices.png"];

   Doesn't seem to work either. This has the negative side effect that I can't access any of the properties or methods that I've implemented in the DCNetwork.m file. Please help!

   Thanks.

   Posted 2 years ago #
2. 

   Codemattic
   Moderator

   You will have to write your own convenience method to make that work. You will have to make a +networkWithFile: method that calls the appropriate initializer and autoreleases and returns the result.

   What does your DCNetwork initializer look like?

   Posted 2 years ago #
3. 

   Codemattic
   Moderator

   Here is some info on writing good initializers and convenience methods from a previous post.

   http://www.cocos2d-iphone.org/forum/topic/1357#post-8474
   http://www.cocos2d-iphone.org/forum/topic/1357#post-8553

   hth, Codemattic

   Posted 2 years ago #
4. 

   FinnG
   Member

   Thanks a lot. My initializer now works and looks something like this:

   DCNetwork *network = [DCNetwork networkWithFile:@"devices.png"];
   
   +(id) networkWithFile:(NSString*)imageFile {
   	return [[[DCNetwork alloc] initWithFile:imageFile] autorelease];
   }
   
   - (id) initWithFile:(NSString *) imageFile {
       self = [super initWithFile:imageFile capacity:8];
       if (self) {
       }
       return self;
   }

   Posted 2 years ago #

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