[Kde-games-devel] Data migration issue

[Mathias Kraus]

Am Sonntag, 1. März 2015, 23:59:51 schrieb Albert Astals Cid:
> El Diumenge, 1 de març de 2015, a les 23:46:24, Mathias Kraus va escriure:
> > Am Montag, 2. März 2015, 09:00:07 schrieb Ian Wadham:
> > > Hi Mathias,
> > > 
> > > On 02/03/2015, at 5:24 AM, Mathias Kraus wrote:
> > > > I just tested the data migration of some games and noticed, that they
> > > > have the same problem like granatier when QCoreApplication is created
> > > > before the migration. The migrated config is not used at the first
> > > > application run, but the default settings. If a user then changes a
> > > > setting, the migrated settings will be lost.
> > > > 
> > > > While this is just a minor problem, because the settings can be changed
> > > > again and it only happens if the user changes the setting at the first
> > > > run of the application,> 
> > > I would say that most users would start changing settings if they find
> > > their settings are gone.
> > > 
> > > > there is another problem. The migrated high scores are also not used.
> > > > This means, if a user plays a game and wins, the old high scores are
> > > > also lost.> 
> > > Also, other data files, such as the user's entire jigsaw puzzle collection
> > > in Palapeli, the saved solution-state of each puzzle, the saved state of
> > > a cube in Kubrick and any games or levels in KGoldrunner that are being
> > > composed or edited by the user --- to name a few.
> > > 
> > > > I think this is a big problem
> > > 
> > > Yes, it is a really serious problem, IMHO.
> > > 
> > > > and would suggest, to move the creation of QCoreApplication below the
> > > > migration.> 
> > > Hope that works in all cases.  Well spotted, Mathias!
> > 
> > I assume QCoreApplication looks for the rc file and if it doesn't find one,
> > it uses the default settings. As the migration is after the creation of the
> > QCoreApplication, there is no rc file to use.
> > 
> > Could someone confirm my assumption?
> 
> No, QCoreApplication doesn't know anything about rc files, it has to be 
> something else; i'm not saying the migration being done after/before 
> QCoreApplication is not the trigger, i'm just saying that your theory can't be 
> the reason.
> 
> Also it'd probably make sense for you to involve the kde-frameworks mailing 
> list, more knowledgeable people about kconfig & friends live there.

Could someone try to reproduce this bevaviour? Just in case it's something with my configuration.
You can for example start the kdelibs4 version of kmines, change the custom game settings, then start the kf5 based version and check if the settings are the same as from the kdelibs4 version.

> Cheers,
>   Albert
> 
> > 
> > > Cheers, Ian W.
> > > 
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> > 
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