cocos2d for iPhone

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

1. 

   andersonf78
   Member

   Hi folks,

   I'm trying to use Amazon's noSQL datastore service DynamoDB in order to store user scores (I'm currently on Cocos2D 1.0.1), but it crashes on the device.

   The issue (I guess) is Amazon's API uses an NSTimer in order to poll requests for completion ( https://forums.aws.amazon.com/thread.jspa?threadID=72885 ).

   This web service call works just fine in the simulator, but it crashes with EXC_BAD_ACCESS on the device. The reason behind the crash is: for some reason Amazon's code keeps calling itself recursively when running from the device (precisely in the code line where it uses the NSTimer). At a given point the stack overflows and an EXC_BAD_ACCESS is raised.

   Now the interesting part :-). If invoked from onEnter, init it works fine even on the device :). It only crashes from onEnterTransitionFinished onwards.

   Any clues/patches/whatever?

   Thanks a lot!
   - Anderson

   Posted 3 months ago #
2. 

   andersonf78
   Member

   Ah! forgot to point out the same Amazon API call works fine when used in a regular app with no Cocos2D.

   Thanks,
   - Anderson

   Posted 3 months ago #
3. 

   andersonf78
   Member

   Amazon engineers lent me a hand on this.

   Taking the DynamoDB call out of the onEnterTransitionDidFinish will do the trick (I've moved it over to onEnter).

   Using delegates also solves the issue -> http://aws.amazon.com/releasenotes/iOS/2741663008690533

   You guys should really give DynamoDB a try. Pretty solid service and amazingly helpful engineers at Amazon.

   Cheers,
   - Fabiano

   Posted 2 months ago #
4. 

   robodude666
   Member

   Very awesome stuff!

   Pricing looks very affordable for indie developers, with very little risk if the database gets little use. I'll certainly be keeping it in mind if I ever need cloud storage for an app. This is certainly easier and more reliable than rolling your own database w/ secure APIs.

   -robodude666

   Posted 2 months ago #

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