[kernowweb]

Hi

I've been working on a game for iPhone/iPad in AS3 and after lots of tweaking I'm finally getting a usable 30FPS framerate. Gameplay coding is mostly done, but I'm seeing a problem in testing which appears to be related to what background apps are in the dock...

Test the game normally and I get a nice stable 30fps. Quit, then open 2 or 3 other apps (so they are "suspended" in the background), then try again and I get 0fps... Quit and close those background apps (by double-tapping the home button and closing them) and start the game again and I once again get the 30 FPS.

Now everthing I've read seems to suggest that background apps shouldn't be a worry - that iOS should auto-close them if necessary... does anyone know what I can do to handle this, of what I can test for/change to try and fix the problem?

I'm using AIR 3.2, testing on an iPod Touch (retina) which is running iOS 4.3.5

I have considered upgrading to iOS 5 to see if that fixes the problem, but if it does it will mean the app can't be used on older devices? I have access to an iPhone and an iPad both running 5.1 so I'll try that tomorrow.

For testing I have been using an AS3 stats script up to today, but just confirmed these results using the Core Animation tool in Instruments on a Mac and see that in fact the fps does spike very briefly (maybe half a second) before dropping to 0. Game works perfectly when testing on the computer - problem only ever occurs when installed in the device. Finally I've used the remote debugger, and no errors are being traced out!

Any help/advice here would be most appreciated before I tear my few remaining hairs out

B