Beta 5 - Scrolling = Slow

[UrbanMonk]

Scrolling is so slow that anything that uses it is unplayable.

Ok, so that's an exaggeration, but really scrolling is slow, this should not be, especially since there are whole 3D games made for the iphone that run full speed.

Scrolling works full speed until there are more than 5 objects on screen, then it goes at about half-speed. And God help you if you are multitasking with an app like Pandora in the background.

In fact multitasking any other apps causes the mmf app to run more slowly (with/without scrolling), but other apps made with unity/gamesalad experience no slow down.

So I hope this can be optimized soon, but for now I'm replacing my scrolling with a "screens" system.

[Giovanni_Cardona]

UM, I have a game with multilayer scrolls and didn't notice critical slowdowns as you report. I wonder what are your time-related events, like V-Sync, frame rate, machine independent and timer-based movements settings are.

[UrbanMonk]

Ok, well I guess a better quesion would be what your setting are since I left everything at default.

And I'm using the lowest landscape resolution on an iphone 3gs.

Are you on an iphone 4?

[Yves]

I'm sure Andos has tested scrolling apps. You should post an example of slow scrolling.

[UrbanMonk]

Alright, lemme get my test app then.

Like I said, there are a lot of objects on the screen when the scrolling slows.

EDIT: first I need the iphone exporter fixed for me, since it just got disabled when I installed the latest swf exporter update. ):

[Yves]

Beta 5 has been updated, redownload it from here.

[UrbanMonk]

MFA:
http://jfile.us/6a9705d

XCode Project:
http://jfile.us/89e04ed


Once about 70 actives get on screen it drops to about 40 FPS.

This is on the lowest resolution too, I'm going to get an iphone 4 soon so that might fix it.

EDIT: I should mention that the slow down doesn't happen when the screen isn't scrolling.

[Koji_Kabuto]

Already tried it and certainly more than 10 active objects in the scene, the frame rate drops.

On Urbanmonk comments "In fact multitasking any other apps causes the mmf app to run more slowly (with/without scrolling)", I think that Apple would reject all our applications.

This is a topic to watch.

[UrbanMonk]

Make sure that you're compiling it in release mode..

Did you run it on the device or the simulator? It runs more slowly in the simulator.

[Koji_Kabuto]

Yes in release mode.

And I'm running in the simulator, as my iphone 2G is version 3.1.3 and my iPod touch 2G has the 4.1 system, but applications do not work. This month I buy a ipad to test all my apps ... In Venezuela, the Iphone just 4 is coming...