Multitouch performance issues on iPhone 3G

Solar2D General Questions/Discussion
#1

Hi,

I’m doing some test involving multitouch on my iPhone 3G.
For example this sample:
http://developer.anscamobile.com/content/drag-me-multitouch

It runs great on the simulator (single touch of course, multitouch is not supported), but runs really bad on my iPhone 3G - lags, hiccups and such…

Did anyone else notice these issues?

Its kind of impossible to build an App or a game with multitouch support, if these are the delivered performance, especially when taking into account that more display objects (Movie-clips) and logic should be added.

I’d appreciate any impressions from other users… [import]uid: 9536 topic_id: 5874 reply_id: 305874[/import]

#2

Is there anything new on this topic? I have the same problem, testing in iPod Touch results in hiccups and lags when using multitouch and two fingers at minimum. Using only one finger is no problem, there I don’t see any noticeable performance problems, only at two fingers minimum.

This also occurs, if the called function “touched” with Runtime:addEventListener( “touch”, touched ) is empty - just doing nothing.

This is sort of a problem, because having those hiccups let the game look really, really unprofessional. And doing iOS games without multitouch is also not an option…

I tested this on a small self-made testing game, with about 30 “stars” and 12 “coins” flying around. So not such a big deal. It uses also the Director Class. [import]uid: 75471 topic_id: 5874 reply_id: 44859[/import]

#3

Hello. Yesterday I also tried to run the Multitouch-Example on my iPod Touch 2G. Same results as the threadstarter says: sort of hiccups and general laggy behaviour. Also were various other tests I made.

I do not know, if this has got something to do with the hardware used (iPod Touch 2G), since that isn’t the most recent hardware. The threadstarter said, he has tested it on a iPhone 3G. Or maybe the iOS? I am running iOS 4.2.1 at the moment.

Really sorry to report about this issue, because having multitouch disturbing the “flow” of the animation would be a real show-stopper for me using Corona. That is much harder, because I began to really love Lua and the Lua-Corona approach of getting things done fast and quickly. [import]uid: 75471 topic_id: 5874 reply_id: 45045[/import]

#4

what build of corona are you using?

did you try different code other than the sample code?

honestly have not heard any ill behaved multitouch issues in iphone

specially 3g
[import]uid: 24 topic_id: 5874 reply_id: 45047[/import]

#5

Ah, here it is:

Version: 2.0.0
Build: 2011.484
As indicated above, I tried also my own stuff and some other examples as well. [import]uid: 75471 topic_id: 5874 reply_id: 45051[/import]