iOS 5

Francois · October 17, 2011 at 5:17 PM

Hello all,

The last release of iOS 5 had some surprise for us. Applications with double numbers coded into them caused a crash. And problems in other places.
So please, if you are working on a project right now, do NOT upgrade your developing environment to iOS 5. Keep your current 4.3 iOS. Application made with 4.3 WILL work on iOS 5.
We are working as fast as we can on the problems. Beta testing of the new version will start anyday now, you can expect the release of an iOS5-fully-compatible version in a couple of weeks.

Cody · October 18, 2011 at 5:03 AM

Hi Francois,

A quick question, where do I find what version am I using?

thanks

Francois · October 18, 2011 at 8:09 AM

In XCode, click on the name of the project (top) in the project windows. Then click Build Settings, Base SDK line.

Ryan · October 18, 2011 at 9:25 AM

Considering I literally installed Xcode + iOS SDK 5 two days ago, and SDK 4.3 has been completely removed from the Apple Developer Center, can anyone help a brother out and host the original SDK 4.3 ?

Dam1an · October 18, 2011 at 11:45 AM

I've noticed the "crash" problem but if you recompile from mmf2 again the problem is solved. My application was approved and released by Apple with ios5gm. So, I guess it's not such a big problem

Paul_Boland · October 18, 2011 at 7:25 PM

When I updated my iPad to iOS 5, I had to upgrade Xcode 4.1 to 4.2 with iOS 5 because Xcode 4.1 wouldn't build iOS 5 App's. Since then I've submitted my first App, still waiting for the review to complete.

Francois · October 18, 2011 at 9:41 PM

If you do not use double precision numbers in your application, or are lucky that the number is aligned on a 4 bytes boundary, you can stay with iOS 5...

Ryan · October 19, 2011 at 2:33 AM

Is double precision numbers a feature of extensions?

As far as I know, MMF can only use integers (x = x / 4) or floating point (x = x / 4.0), but the types can't be specified.

How would I know if I'm using double or not?

mikec · October 19, 2011 at 3:08 AM

I also had to update as my new phone was ios5. Now when i compile the games in xcode i get a lot of semantic errors.

The errors seem to be caused by the & symbol. Not sure of the exact error but it says something like try adding '&' parentheses to ignore. I would need to switch over to my mac to get the exact error.

So far this is on all games I have tried.

Francois · October 19, 2011 at 9:19 AM

The floating points number in MMF are in double precision.

life2searching · October 19, 2011 at 2:07 PM

so if i have scale object by "2" its ok but not "2.1"?

what is the exact definition of double precision?

Tuna · October 19, 2011 at 3:10 PM

Double precision means you have more detail to the right of the decimal point. Double Precision values require 64 bits to store the value, rather than 32 bits for a single precision number.

ionside · October 22, 2011 at 1:59 AM

so, using a Delta time mechanic is a no no, yeah?

Francois · October 22, 2011 at 9:09 AM

Why? On the contrary it would make the game insensible to FPS variations...

ionside · October 22, 2011 at 12:36 PM

Oh, I thought using Delta time would use double precision.

BHGames · October 23, 2011 at 3:39 AM

I use time delta and it works great!

ionside · October 23, 2011 at 10:30 AM

Oh awesome, thanks BHGames. That was one major concern I had about updating my project to 5. I have quite a lot using delta time.

Anders · October 24, 2011 at 12:39 PM

The double precision crash only happened when they were used in an expression, not for internal code like the movements.

cfullerNY · October 25, 2011 at 9:35 AM

Quote from Andos

The double precision crash only happened when they were used in an expression, not for internal code like the movements.

I just bought MMF2 Dev and the iOS exporter.

My first test was an active object with eight directional movement and the virtual joystick to control it.

I got an error regarding double precision when I tried to compile it in xcode, so does that mean it IS also for internal code like the movements?

Anders · October 25, 2011 at 12:55 PM

Ah hmm I might have been mistaken.
Francois knows more about the fix than I do

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