CODEWITHSUNDEEP
objective-ccocos2d-iphonebox2dobjective-c++
Ospho
Ospho

Reputation: 2796

cocos2d gradual FPS drop

Hey, im running cocos2d, box2d and several particle systems on the iPhone 4.
I've completed my first level which has numerous sprites allocated as well.
I have set my FPS limit to 30fps.
When the game first runs, it runs well, at a solid 30fps. This continues for about 3-4 minutes of smooth gameplay.
But after a while the fps starts to drop, and it turns into a gradual decline until it hits around the 12fps mark.

I remember I had this problem with a previous game that I abandoned.
Is this caused by a memory leak, possibly from not deallocating items??

In my (void)dealloc methods, I am inputting all my allocated releases, could I have missed one? Or is there some other possibility i'm not considering?

Thanks!

Upvotes: 1

Views: 828

Answers (2)

Endre Olah
Endre Olah

Reputation: 955

I have the same problem and I cannot get the resolution. When I unload the entire scene and reload it again, everything is back to normal. So it definitely seems to be a leak somewhere, but even with instruments I cannot find the source of it.

The total memory usage is not growing, no leaks reported, so I have the feeling that something in Cocos2d or in Chipmunk increasing the load.

I am using sprites which are moving in and out from the screen in a random manner and creating nd destroying them every time. Can it be that something is not released properly and Cocos or Chipmunk is still calculating with those items?

Upvotes: 0

nielsbot
nielsbot

Reputation: 16022

Sounds like you're running out of resources. I'd try Instruments as suggested by SB. Instruments can check for leaks using the Allocation instrument. You could also try the OpenGL profiling suite.

Upvotes: 2

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