A fast, easy to use, free, and community supported 2D game engine
Kaizen
Member
Hi,
I´m testing cocos2d and I´m having some problems with performance using AtlasSprites. I´m creating a Scene with one Layer and inside the Layer I´m creating some AtlasSprites using the same AtlasSpriteManager for all of them. I tried with 100, 200 and 300 sprites and I´m getting this FPS values:
100 sprites -> 57 FPS
200 sprites -> 32 FPS
300 sprites -> 22 FPS
I´m using the simulator, compiling for 3.0 in Release mode.
What am I doing wrong?
Performance results from the simulator are not reliable at all. Sometimes your game will run worse on the simulator than on the device. Run it on the device and if you still have a problem, then post again.
Kaizen
Member
Hi Mitch, thanks for your answer. I tried the app in an iPhone with 3.0 compiled in Release mode and with 200 sprites I´m getting 35 FPS. You are right, the performance in the simulator was a bit worse but it´s still low in the device.
Any ideas?
This is the code I´m using in the init() method of the Layer:
srand( time( NULL ) );
AtlasSpriteManager * aSpriteManager = [AtlasSpriteManager spriteManagerWithFile: @"tileset.png"];
self.spritesManager = aSpriteManager;
[aSpriteManager release];
[self addChild: spritesManager z: 0];
for ( int i = 0; i < 250; i++ )
{
AtlasSprite * aSprite = [AtlasSprite spriteWithRect: CGRectMake( 0, 0, 64, 32) spriteManager: spritesManager];
aSprite.position = CGPointMake( rand() % 480, rand() % 320 );
[spritesManager addChild: aSprite];
}
Steve Oldmeadow
Administrator
cocos2d ships with AtlasSpriteTest and there are performance stats for each release in the Wiki.
Kaizen
Member
I tried AtlasSpriteTest in my iPhone too and in the first test when you add a new sprite everytime you tap on the screen I´m getting 30 FPS when I reach 70 sprites.
I saw the results of the performance tests and I should be expecting 60 FPS with 250 sprites so something is wrong here.
I disabled Thumb compiling as recomended but everything stays the same.
Any other ideas? I don´t know what I´m doing wrong.
bradparks
Member
Is debug logging turned off, ie in the Debug Console, do you see any debug messages from Cocos? ie remove COCOS2D_DEBUG from your defines...
http://www.cocos2d-iphone.org/forum/topic/1542#post-9619
If that's not disabled, it'll slow down anything big time!
bradparks
Member
I know this is a "way out there" suggestion, but have you rebooted your iPhone recently? And also, is it jailbroken? If so, make sure you're not running any background tasks... that could cause some issues too....
and I can't do any tests right now, but will try in about 8 hours from now ;-( Wish it could be sooner ;-)
Kaizen
Member
Hi bradparks... thanks for all your help.
Yes, I´ve rebooted my iPhone several times ( I have an iPod too in wich I see the same low performance). Both iPhone and iPod are jailbroken... how can I see which tasks are running?
I´ll wait for your tests... thanks a lot!
bradparks
Member
sorry it took a wee bit longer.... there was some fun to be had ;-)
I checked it out, and on my 2nd gen iTouch, i get ~30fps with 70 sprites in the AtlasSpriteTest... So no different than you're seeing.... maybe there's something else going on.... I'll let you know if I think of anything....
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