Mittwoch, 29. Dezember 2010

qw 0.1 is now available for Maemo 5

My second new game this year - qw - has been released for Maemo 5 today. Version 0.1 (a tech demo, not a proper final release) gives you a sneak peek on the gameplay with 9 different levels and four-player support (if you hook up an external USB keyboard or get together really close for some N900 keyboard multiplayer action). The gameplay is simple: You need to control your player cursor (either via touchscreen gestures or keyboard) and enclose areas of the game with lines in order to fill them with a colored image. Beware of the enemies, as they will destroy your lines and split your points in half. If you enclose one or more small enemies, your points are multiplied.

A .deb for Maemo 5 is available from the qw homepage and packages for Symbian are also available. Try it out and send some feedback :) Enjoy!

Mittwoch, 22. Dezember 2010

That Rabbit Game 1.2 is now available for Maemo 5

I've blogged about it already, and even showed some code during an Interview at Nokia World, but there have not been any releases of That Rabbit Game so far, mostly due to Ovi Store QA not understanding what Optification means and requesting that the version number of the application appears somewhere in the app UI (after 15 days in QA). I've made the requested changes, added scoring and pushed new releases (of version 1.2) for both Symbian and Maemo 5 to Ovi QA.

Until the game gets published on Ovi, I decided to release packages on the website so you can download and enjoy the game right away - and maybe even provide some feedback. Please don't mirror/redistribute the packages, but link directly to the website. Download That Rabbit Game for Maemo 5!

Controls are via accelerometer (to tilt the rabbit head left/right) and via touchscreen (tap to flap your wings - the longer you tap, the harder the wings flap). The goal is to lose 10 coins in 90 seconds by getting shot 10 times. After that, the next goal is to lose the 10 coins in as little time as possible. Yes, you control the rabbit head, and not the crosshairs.

Updates and changes will be announced via @thatrabbitgame on Twitter, so follow it and tell your friends. Enjoy!

Sonntag, 19. Dezember 2010

gPodder 2.11 in Extras-Testing fixes YouTube downloads

A new version of gPodder is out. If you are having problems with YouTube downloads recently, this release is for you. There are also some other minor changes and fixes (detailed changelog for gPodder 2.11). No translation updates or major new features, though. Grab the new package from Extras-Testing. The usual disclaimers apply. If you can, please test and vote for gPodder 2.11-1 in Extras-Testing, so other users can enjoy the fixes as soon as possible.

As always, a new Diablo package has also been uploaded and should be available in Diablo Extras for all N8x0 users soon.

Mittwoch, 15. Dezember 2010

The Qt promise and what Maemo 5 needs

(tl;dr: Nokia should provide updated Qt packages as official SSU for Maemo 5.) Before I start, here are some facts (correct me if I'm wrong):

  • The N900 runs the Maemo 5 operating system
  • Maemo 5 received some updates (the latest one being PR1.3)
  • We don't really expect PR1.4 to come out any time soon, if at all
  • The MeeGo Handset images from are inferior to Maemo 5 and not a replacement (and never will be)
  • The MeeGo operating system on the first Nokia MeeGo handset will have a proprietary UX and proprietary apps, and won't be available for the N900

In summary, it means: We are stuck with Maemo 5 on the N900. And that is a good thing! Lots of useful apps, a helpful community (if you subtract the trolls) and a polished OS. Sure, there's room for improvement, and lots of open bugs that should be fixed, but that's another issue (which will ideally be solved by open sourcing closed components with bugs that Nokia isn't interested in fixing anymore and by the Community SSU). This one is about Qt.

Two days ago, an e-mail was sent to maemo-community, proposing a "community service pack", which basically is a big pile of workarounds. Read my response for some initial thoughts.

When Qt arrived on Maemo 5, the promise was two-fold:

  • Write your apps in Qt and you're ready for MeeGo (apps written now will run on the platform released in the future)
  • Maemo 5 gets Qt support, so MeeGo apps will run on the N900 (apps written in the future will run on the platform released now)

It turns out that the first one will probably hold true (surely with QML, maybe even with QWidget), while the second one is doubtful, as Maemo 5 has only got Qt 4.7.0 through the official channels (PR1.3), with no real official update in sight. If you use QML, use QtQuickCompat as workaround ("Qt Qml plugin that reregisters all “Qt 4.7” types in the “QtQuick 1.0” namespace … useful if you’re forced to stay with 4.7.0 (e.g. on N900), but still want to use the new namespace.").

There is also a real bug (yes, a bug!) in Qt 4.7.0 on the N900, and the fix isn't released as update - it's a new package: libqt4-bearer-hotfix ("This is a hotfix for the broken ICD package in Qt 4.7.0. It can be removed once Qt mobility 1.1 is released."). Now, the proposed "Community service pack" would combine all these fixes into a single dependendable metapackage (yes, a new one). It becomes the "Unbreak my Qt" feature that every app developer has to depend on and specify in the packaging.

This is wrong! No developer targetting MeeGo who has not heard about Maemo 5 will go through all those ugly workarounds and spend a week fixing things up for Maemo 5 just so that the app works. Now imagine what would happen if the first MeeGo device also introduces such kludges once it falls out of its support life cycle. Or what if the problems on Symbian are similar, and developers have to special-case things there. Not only for Symbian^3, but also for S60v5? Fragmentation.

How to avoid fragmentation? Simple: Provide Qt as a "feature" with a quicker release cycle that can be updated every month if need be. Provide Qt updates also for operating systems that don't get updates for the OS anymore. Here's my proposal:

  • Provide SSU updates for Maemo 5 for Qt (and Qt Mobility) through official channels (that's the important part here!)
  • A new Qt (and Qt Mobility) release should be available on all platforms (Maemo 5, S60v5, Symbian^3, MeeGo) at the same time through official (end-user approved) channels
  • Apps targetting stores and repositories (Maemo Extras, Ovi Store, MeeGo Apps/Downloads) should be able to depend on the latest Qt (and Qt Mobility) version

Without that, you'll get fragmentation similar to Android: The 1.5, 1.6, 2.1 versions are similar to Qt 4.6, Qt 4.7.0 and Qt 4.7.1 (for example). Again, you don't need to update the OS, just update the framework - through official channels!

Dienstag, 7. Dezember 2010

PySide/QML tutorials online, workshop next Sunday

To get myself accustomed to PySide UI development using Qt Quick (aka QML) and to check out what works already and what does not, I've experimented with creating some common elements that I'd use in an application (i.e. a QML version of gPodder - a blingy demo already exists) and decided to share my experiences and results as tutorials.

Here are all the tutorials in their current state:

Screenshots are available on Flickr:

I'd like to get some feedback on whether or not the tutorials worked for you and were helpful and what else you would like to see. You can try out all the examples on your N900 today! Just install python-pyside and python-qtmobility (for the last example) from Extras-Devel and copy the examples from the Wiki. The usual disclaimers for software in Extras-Devel apply.

In related news, there will be a PySide/QML workshop at the December meeting of the Python User Group Austria, so if you happen to be in or around Vienna on Sunday, 2010-12-12, stop by at the Metalab and meet fellow Pythonistas.

Samstag, 4. Dezember 2010

Hildon UI elements in QML

I've been playing with PySide and QML this week (more on that soon), but here's something that might be interesting to the Maemo community: Using the native Hildon look and feel of Maemo 5 in QML.
This QML demo uses the current theme graphics of Hildon and provides QML components that can be used just like their Hildon counterparts, but inside QML UIs. This is not a complete library, just a test of what could be possible in case anyone wants to step up and create and maintain a Hildon library of QML components. Here's a video:
The code for this demo is on Github - you can try it out on your N900 using qmlviewer.