[Sugar-devel] Physics activity development

[Alex Levenson]

A little background information. In the process of creating x2o, I created
Physics! sort of as a demo. So a lot of things are further along in x2o
because Physics! was sort of my sandbox for creating x2o. So if you want to
polish off Physics!, please take a look at what I did with x2o, which
integrates with the journal.
Alex

On Tue, May 26, 2009 at 9:00 PM, Asaf Paris Mandoki <asafpm at gmail.com>wrote:

> Hi,
>
> I would like to get started adding the play/pause button and the pin
> button. Probably the next step is to integrate the activity with the
> journal. The only problem is that I haven't been able to get my development
> environment working. It seems there are some open issues with ubuntu. My
> plan right now is to wait until the Ubuntu issues are fixed. Any suggestions
> for a better setup? The only thing I have working now is a virtualbox
> environment where i've been testing the activity and found some bugs. I saw
> a commit with the "joystick" feature removed. Is the base code ready to
> start adding the minor button changes?
>
> Thanks,
> Asaf
>
>
>
> On Mon, May 25, 2009 at 2:17 AM, Brian Jordan <bcjordan at gmail.com> wrote:
>
>> On Sun, May 24, 2009 at 8:59 PM, Gary C Martin <gary at garycmartin.com>
>> wrote:
>> > Hi Brian,
>> >
>> > On 24 May 2009, at 18:36, Brian Jordan wrote:
>> >
>> >> Hey all,
>> >>
>> >> Gary -- when you get a chance, can you add me as a committer on
>> >> git.sl.o?  I'd like to help clean things up!
>> >
>> > You're added! :-)
>> >
>> > Can I request we try and make small clean commits and try to let others
>> know
>> > what we are doing. If you want to hack, Gitorious supports quite a nice
>> > 'Clone repository' and then 'Request merge' process (no commit rights
>> needed
>> > for the main project). The alternative, if you know what you are doing,
>> is
>> > just make your own local git branch to hack on, so you can take care of
>> any
>> > merge/conflict issues yourself when you fold it back into the current
>> > master.
>> >
>> > I'm far from a git expert, but I can recommend some bed time reading at:
>> >
>> >        http://www.eecs.harvard.edu/~cduan/technical/git/<http://www.eecs.harvard.edu/%7Ecduan/technical/git/>
>> >
>> > and/or
>> >
>> >        http://gitready.com/
>> >
>>
>> Thank you, will devote some to that!  Need to learn to keep my crazy
>> features in branches.
>>
>> > I'd like to get on with Labyrinth work, if you're willing to have an
>> initial
>> > clean up of the Physics source in the next few days... so what was
>> > 'joysitck' feature all about? ;-)
>>
>> This would probably be best to describe on the wiki page, the idea was
>> to make a UI for assigning keys on the XO-1 to impulses or changes on
>> certain objects, so simple 2 player physics based games could be made
>> from within Physics.
>>
>> Agreed, though, I will rid that from the code so we have a nice base
>> line for crazy-feature branches.
>>
>> > Once the dev.sugarlabs.org component is added we should add the
>> > features/bugs in there to keep them all together. FWIW, from a UI point
>> of
>> > view I had in mind:
>> >
>> > 1) remove/disable 'joysitick' feature as I have no idea what it was
>> meant to
>> > be ;-)
>> > 2) build tool buttons correctly using RadioToolButton so they display
>> state
>> > correctly
>> > 3) use set_accelerator to define visible keyboard shortcuts for the
>> tools
>> >
>> >> Asaf -- do you have a http://git.sugarlabs.org account yet?
>> >>
>> >> This is some feedback from Asaf (these could fit as enhancements in
>> >> http://dev.sugarlabs.org/ ):
>> >>
>> >>> While playing with the activity I found a "pause" button to stop time
>> >>> could be very useful. It's complicated to build elaborate contraptions
>> >>> if everything keeps falling. Maybe while everything is paused,
>> >>> positions an velocities of objects could be modified.
>> >>>
>> >>> A minor modification I suggest is to create a separate button for
>> >>> adding push pins. It is not intuitive to add them using the link tool.
>> >>> If there are plans about creating tutorial levels this isn't that
>> >>> necessary although I don't see any harm on adding it.
>> >>>
>> >>> An other thing I think could be grate is to be able to create
>> >>> attractors an repulsors. With stuff like this it gets pretty
>> >>> interesting, we could have objects orbiting around the attractors.
>> >
>> > Yes, all good stuff, there's also a list on
>> > http://wiki.laptop.org/go/Physics_%28activity%29 as well, but I'd vote
>> for
>> > cleaning up what we have first, perhaps adding a play/pause, and keeping
>> > Journal state so kids can actually keep their Physics creations (and
>> send
>> > them to friends when using sugar 0.84).
>>
>> +1 +1 +1
>>
>> Brian
>>
>> >
>> > Regards,
>> > --Gary
>> >
>> >> Thanks
>> >>
>> >> Brian
>> >>
>> >> On Sun, May 24, 2009 at 4:17 PM, Gary C Martin <gary at garycmartin.com>
>> >> wrote:
>> >>>
>> >>> Hey Brian,
>> >>>
>> >>> On 24 May 2009, at 13:57, Brian Jordan wrote:
>> >>>
>> >>>> Hey Gary,
>> >>>>
>> >>>> First, I'm attaching Asaf Paris Mandoki, who contacted me last week
>> >>>> with an interest in developing on the Physics activity, and has great
>> >>>> ideas of things to add.  This is a great opportunity!  :)
>> >>>>
>> >>>> I can handle getting Physics on gitorious, the bug tracker and
>> a.sl.o.
>> >>>> I will try to complete this by the end of today.
>> >>>
>> >>> Having chatted with Alex Levenson, I've already kicked off the
>> migration
>> >>> for
>> >>> Physics (rep is now in Gitorious, trac request is in, and I've started
>> to
>> >>> poke at the code, running well at least in sugar-jhbuild and sugar
>> 0.84).
>> >>> X2o is next on my hit list once Physics is in a reasonable state.
>> >>>
>> >>>> The things I can use some help with are (1) integrating proper
>> >>>> localization to the activity and
>> >>>
>> >>> Yep, I'm going to do a pass at the code and tidy up some partially
>> >>> implemented / broken UI stuff, before requesting it's addition to
>> pootle
>> >>> (best to start with a reasonably stable set of strings). Would also
>> like
>> >>> to
>> >>> get/text resolution independence (for non XO hardware) and get the
>> scene
>> >>> state saving to Journal...
>> >>>
>> >>> Want to get the basics out the way first before we break it again with
>> >>> exciting new features ;-)
>> >>>
>> >>>> (2) figuring out a good way to include the pybox2d source in the git
>> >>>> repository, while including an
>> >>>> F9-compatible binary on a.sl.o (this was brought up w.r.t. Pippy a
>> >>>> couple of times on the fedora devel lists, but I don't remember
>> seeing
>> >>>> a clear way of how to handle it).
>> >>>
>> >>> Yea I was worried this might be an issue needing resolved, it's not my
>> >>> area
>> >>> of speciality, I'll need to take a deeper look at the source.
>> >>>
>> >>>> Thanks for the ping and your help!!
>> >>>
>> >>> No, thank you! I was expecting a wall of silence :-)
>> >>>
>> >>> Regards,
>> >>> --Gary
>> >>>
>> >>>> Brian
>> >>>>
>> >>>> On Sat, May 23, 2009 at 3:19 PM, Gary C Martin <gary at garycmartin.com
>> >
>> >>>> wrote:
>> >>>>>
>> >>>>> Hi Guys,
>> >>>>>
>> >>>>> I'm making contact to see if any of you are still interested in
>> >>>>> developing
>> >>>>> your great Physics activity? Most of the active activity development
>> >>>>> has
>> >>>>> now
>> >>>>> moved over to Sugar Labs infrastructure, and we've been getting some
>> >>>>> requests for localising Physics.
>> >>>>>
>> >>>>> We have a Gitorious based source repository (there's no admin
>> request
>> >>>>> procedure, you can just register an account and migrate/create a
>> >>>>> project):
>> >>>>>
>> >>>>>      http://git.sugarlabs.org/
>> >>>>>
>> >>>>> Our bug-tracker trac is at:
>> >>>>>
>> >>>>>      http://dev.sugarlabs.org/
>> >>>>>
>> >>>>> For activity distribution, Sugar Labs is customising Mozilla addon's
>> >>>>> web
>> >>>>> front/back end (we're trying to encourage activity developers to
>> post
>> >>>>> there
>> >>>>> activity bundles here), it's still a little ugly but the theme/UI is
>> >>>>> still a
>> >>>>> work in progress :-)
>> >>>>>
>> >>>>>      http://activities.sugarlabs.org/
>> >>>>>
>> >>>>> If no one is available to help, I'd be happy to migrate Physics over
>> to
>> >>>>> the
>> >>>>> Sugar Labs infrastructure, get it added to pootle so we can start
>> >>>>> localisation and make sure bundles get released for easy download
>> and
>> >>>>> inclusion in images/distrobutions. If someone finds they have some
>> time
>> >>>>> to
>> >>>>> come back later just ping me and I can easily add extra commiters;
>> >>>>> though
>> >>>>> with Gitorious, any one can branch anything, hack a bit, then submit
>> a
>> >>>>> merge
>> >>>>> request (great workflow for dipping in and out of projects).
>> >>>>>
>> >>>>> Kind Regards,
>> >>>>> Gary C Martin
>> >>>>> Sugar Labs Activity Team
>> >>>>> http://wiki.sugarlabs.org/go/Activity_Team
>> >>>>>
>> >>>
>> >>>
>> >
>> >
>>
>>
>>
>> --
>> Brian Jordan
>> OLPC Learning Team Technical Contractor
>> Mobile Phone: +250 0783864924
>> Skype: bcjordan
>>
>
>
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