Physics issue with Daily Build Version 2012.925 (2012.9.28)

Solar2D Daily Builds and Public Releases
#1

The physics engine is behaving differently in this build, compared to the last stable release.
It is difficulty to pin-point the exact issue, but I am noticing the following differences:

  • pivot joint limits do not seem to work as before: the rotation is slower and more “sticky”, and the limits no longer seem to work correctly.

Has something changed in this release?
I would really appreciate a response as I am about to submit to the App Store, but had to upgrade to latest daily build in order to properly support IOS6. The change in physics behaviour affects the game to its very core :frowning:

Thanks,
Anthony [import]uid: 87194 topic_id: 31645 reply_id: 331645[/import]

#2

Please note that I was using public release 840 previously, so is it possible this issue has been introduced in build 873 when Box2D was upgraded to 2.2.1 ?

[import]uid: 87194 topic_id: 31645 reply_id: 126399[/import]

#3

I noticed some minor changes as well when Box2D 2.2.1 was introduced.

In my case, setting continuous physics to false, via [lua]physics.setContinuous(false)[/lua], resolved everything.

  • Andrew [import]uid: 109711 topic_id: 31645 reply_id: 126428[/import]
#4

Thanks, Andrew.

Phew! After an all-nighter, I’ve discovered that the issue is do to with very complex physics shapes. When I simplify all my shapes, the problem goes away and the performance is similar to the older version of box2D.

All I need now is a fix to the Game Center orientation bug, and I’ll be a very happy man!

Cheers,
Anthony [import]uid: 87194 topic_id: 31645 reply_id: 126478[/import]

#5

Please note that I was using public release 840 previously, so is it possible this issue has been introduced in build 873 when Box2D was upgraded to 2.2.1 ?

[import]uid: 87194 topic_id: 31645 reply_id: 126399[/import]

#6

I noticed some minor changes as well when Box2D 2.2.1 was introduced.

In my case, setting continuous physics to false, via [lua]physics.setContinuous(false)[/lua], resolved everything.

  • Andrew [import]uid: 109711 topic_id: 31645 reply_id: 126428[/import]
#7

Thanks, Andrew.

Phew! After an all-nighter, I’ve discovered that the issue is do to with very complex physics shapes. When I simplify all my shapes, the problem goes away and the performance is similar to the older version of box2D.

All I need now is a fix to the Game Center orientation bug, and I’ll be a very happy man!

Cheers,
Anthony [import]uid: 87194 topic_id: 31645 reply_id: 126478[/import]