squeakland March 2006

squeakland@lists.squeakfoundation.org

20 participants
38 discussions

Squeak Etoys and preschoolers
by Leonel Morgado 25 Apr '06

25 Apr '06

Hi, I'm interested on computer programming experiences with children aged 3, 4 and 5. I was unable to find documented cases of Etoys use in this age group, but expect that there should be at least a few user stories. If anyone has reports, photos, or even just recollections of such cases, I would love to hear about them! Inté, Leonel Morgado

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Re: [Squeakland] speed
by Nicholas Bennett 31 Mar '06

31 Mar '06

Last time I had looked at this kind of thing a lot of it was rendering the rotated sketch morphs (some effect just from the size of em, and some from the rotate operation). A quick and dirty test to see if this is your issue is to make them all look like 'dot' and/or turn off the rotation - if this is the problem it will speed up, making them all huge would slow things down. At one point I tried to profile into the rendering stuff to at least automatically cache rotated forms (or allow said caching), but I gave up.... I'd be interested in any comments or suggestions re how to address this - it does seem 'too slow' regards, nicholas >From: "Sholom Eisenstat" <sholom.eisenstat(a)tel.tdsb.on.ca> >To: squeakland(a)squeakland.org >Subject: [Squeakland] speed >Date: Thu, 30 Mar 2006 22:29:13 -0500 > >It appears that even a few objects in motion slows down the whole system. >We've tried to streamline scripts and sped up the ticks/sec with little >success. > >Can 5 cars move at a reasonably fast speed? > >If they're siblings do they have less 'overhead', run faster? > > > >Sholom Eisenstat > > > >_______________________________________________ >Squeakland mailing list >Squeakland(a)squeakland.org >http://squeakland.org/mailman/listinfo/squeakland

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speed
by Sholom Eisenstat 31 Mar '06

31 Mar '06

It appears that even a few objects in motion slows down the whole system. We've tried to streamline scripts and sped up the ticks/sec with little success. Can 5 cars move at a reasonably fast speed? If they're siblings do they have less 'overhead', run faster? Sholom Eisenstat

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Re: [Squeakland] Linking projects
by Hübner, Uwe 30 Mar '06

30 Mar '06

Wow! But how can I 'publish' (and later 'find') all linked projects? (No, I don't want to create a new image!) Regards, Uwe -----Original Message----- From: squeakland-bounces(a)squeakland.org [mailto:squeakland-bounces@squeakland.org]On Behalf Of Kelly Sent: Tuesday, March 28, 2006 12:13 AM To: Squeakland(a)squeakland.org Subject: [Squeakland] Linking projects Importance: High Hey guys, Is there a way to link projects together? Or to make a link to a project from within another project. Kinda like hyperlinks in web pages? I am sure I have seen this before but trolled the archives and can't find anything. Thanks Regards Kelly

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Linking projects
by Kelly 28 Mar '06

28 Mar '06

Hey guys, Is there a way to link projects together? Or to make a link to a project from within another project. Kinda like hyperlinks in web pages? I am sure I have seen this before but trolled the archives and can't find anything. Thanks Regards Kelly

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Re: [Squeakland] Movement oddity...
by Peace Jerome 25 Mar '06

25 Mar '06

Hi Blake, --- Blake <blake(a)kingdomrpg.com> wrote: > Thanks, Jerome! > > Any thoughts on detecting mouse clicks? > > ===Blake=== Sure since you asked. First, I need some more info. When you say mouse clicks what are you talking about? I know this sounds silly but I have a good reason for asking. In Etoys you can set a script to be run on mouse down or mouse up. Which should do for many applications. In the innards of squeak you can make distinctions between click (an uninterupted mouse down, mouse up sequence), double click ( two uninterupted sequences), a startdrag interuption, and a timeout interuption. AFAIK eToys does not provide for the latter so one needs to get by with the former. The innards also provide for checking on whether the red (left) yellow ( right ) or ( blue ) button was pressed . Etoys does not provide a way to test which button AFAIK. Someone else may know more about the etoy capabilities. I got lured to the innards side of squeak after getting frustrated by the limitations of early etoys. So, knowing this can you describe what you wish to achieve more precisely? Yours in service, -- Jerome Peace __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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backgrounds / set size of display
by Kelly 24 Mar '06

24 Mar '06

Hey guys, I am using a background for one of my project that I have drawn in flash. Is there any way to stop it from tiling?? Or is there an option somewhere to set the size of display?? I have quite a small monitor at home and have everything looking great but when I use a PC at Uni with a bigger monitor it kinda messes up my layout. Thanks Regards Kelly

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testing with the clock
by Thompson, Ryan 20 Mar '06

20 Mar '06

Hello, Is there anyway to test whether the clock has been started for the first time? i.e. if I want to introduce a random event that happens initially only at the beginning of the script, how can I test that the clock just started? Thanks in advance, Ryan

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Re: [Squeakland] Movement oddity...
by Peace Jerome 20 Mar '06

20 Mar '06

Hi Blake, Great job finding oddities. Keep up the good work. The key to the movement oddity is in the width and heigth of the morph. The etoy x and y of the morph are the center or nearly the center. Which means that when the morph has an odd width or in this case heigth either the corner or the center will not be on an integer boundry. World's mouse x and mouse y are the cursor point. And that is always integer. Obviously, somehow, this is causing the inequality to fail after the morph has been moved. And so it will adjust one way at one tick and the other way at the next. If there are an even number of ticks. It will bobble twice as much but end up in the same place each time its displayed. We don't see it. A work around is to adjust your morphs width and height so that they are both even and then the morph will be rock steady when it gets to the cursor point. A good way to demostrate the relationship would be to use a ruler morph as the test morph. And try it with different heights and widths. Yours in service, -- Jerome Peace __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Problem with non-ascii caracters
by Hilaire Fernandes 17 Mar '06

17 Mar '06

Hello, In the DrGeoII interactive geometry software project I am developping, I try to migrate from the Squeak 3.8 image to the Squeakland 3.8 image. The code is under Monticello package, and it contains various French accented strings, however when I load the Monticello DrGeoII package in Squeakland all get fine but the accented characters get lost in space... For example, character as 'é' is turned to 'È' Any ideas about why is it like that? Thanks a lot, Hilaire Fernandes

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squeakland March 2006