cocos2d for iPhone

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

1. 

   matt1980
   Member

   Hello all,

   Complete newbie at cocos2d, but I've been writing iPhone code for a few months now, so I'm not totally lost...

   I'm trying the first "Hello World" app, but I'm trying to adapt it more closely to my final target, which is using a cocos2d graphics context in a view, among other UIViews, and the interface is built in interface builder. So, this is pretty much everything I changed:

   0. Changed all the object names to add "CC" where missing (CCLayer, CCDirector, etc...I guess this changed from 0.8 to 0.99?)
   1. Changed attachInWindow:window to attachInView:graphicsView
   2. Commented out the setDeviceOrientation call (the NIB is already built in landscape orientation)
   3. Put the code in viewDidLoad of the view controller instead of the appDelegate launch method.

   So, I got the app to compile and run, and it crashes with a EXC_ARITHMETIC exception within the attachInView call...specifically, down in [CCLabelAtlas updateAtlasValues], on the following line:
   

   float row = (a % itemsPerRow) * texStepX;

   where it seems the itemsPerRow is zero, for whatever reason.

   Any idea where I'm going wrong? is viewDidLoad the wrong place to initialize things? Does the view I'm attaching to have to be a particular type? (Right now it's just a UIView.)

   This is using SDK 3.2, in the iPad simulator, with cocos2d release-0.99.0-rc (from the tag in svn). The UIView I'm attaching to is 1024x448.

   Thanks!!

   Posted 2 years ago #
2. 

   matt1980
   Member

   Doh...solved my own problem. I needed to add fps_images.png directly to my project. The initialization in attachInView assumes that this file is in the project, and since it wasn't the image width was zero, which led to the EXC_ARITHMETIC error. And, if I had looked at the run log, I might have even been able to tell that sooner, because this is what it said:

   2010-02-12 13:57:24.631 [32140:207] cocos2d: deallocing <CCTexture2D = 0462CA00 | Name = 0 | Dimensions = 0x0 | Coordinates = (0.00, 0.00)>
   2010-02-12 13:57:24.633 [32140:207] Image is Null
   2010-02-12 13:57:24.633 [32140:207] cocos2d: Couldn't add image:fps_images.png in CCTextureCache

   Since I was adding cocos2d to a project I was already working on, I didn't use the template, which probably would have avoided this problem. The Monocle Studios whitepaper mentioned on the wiki actually specifically mentions adding fps_images.png, too. Anyone else having problems at this stage might try looking there to see if you've missed anything important during setup.

   Posted 2 years ago #
3. 

   fg1921
   Member

   Perfect, thanks!

   Posted 2 years ago #
4. 

   dkk
   Member

   Thanks a lot!!! I have been searching for a solution to the problem for 2 days!!

   Posted 1 year ago #
5. 

   nk
   Member

   I get this error on the Simulator only. Is it necessary to add the fps_images.png file for device builds?

   Posted 1 year ago #

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