Scratch
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#6851 2013-02-12 10:05:37
#6852 2013-02-12 10:19:17
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
Yay! 
Bad news: I'm having serious issues with perfectly normal custom blocks turning into "Obsolete!": 
Code:
<project name="abc" app="Scratch 2.0 + snapin8r, http://scratch.mit.edu" version="1">
<notes>Generated by snapin8r by Hardmath123.
Some Scratch 2.0-specific features may be missing, like cloud data.</notes>
<thumbnail></thumbnail>
<stage name="Stage" costume="1" tempo="60" pentrails="" threadsafe="false">
<scripts/>
<blocks/>
<variables>
<variable name="GLOBALVAR" value="7"/>
<variable name="THIS_IS_A_LIST">
<list>
<item>
<l>thing</l>
</item>
<item>
<l>hi</l>
</item>
<item>
<l>object</l>
</item>
</list>
</variable>
</variables>
<costumes>
<list>
<item>
<costume name="backdrop1" center-x="240" center-y="180" image="data:image/svg+xml,%3Csvg%20version%3D%221.1%22%20width%3D%22480%22%20height%3D%22360%22%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20xmlns%3Axlink%3D%22http%3A//www.w3.org/1999/xlink%22%3E%0A%20%20%3C%21--%20Exported%20by%20Scratch%20-%20http%3A//scratch.mit.edu/%20--%3E%0A%20%20%3Cpath%20id%3D%22ID0.6935151549987495%22%20fill%3D%22%23FFF%22%20scratch-type%3D%22backdrop-fill%22%20d%3D%22M%200%200%20L%20480%200%20L%20480%20360%20L%200%20360%20L%200%200%20L%200%200%20Z%20%22/%3E%0A%3C/svg%3E"/>
</item>
</list>
</costumes>
<sounds>
<list>
<item>
<sound name="pop" sound="data:audio/wav,RIFF%28%02%00%00WAVEfmt%20%10%00%00%00%01%00%01%00%11%2B%00%00%22V%00%00%02%00%10%00data%04%02%00%00%D5%00%03%03%BD%07r%0D%EF%15S%1D%3C%23%9B%24%E2%20%AB%16s%06U%F1_%DA%60%C4%8D%B3i%A9%92%A8%E5%B1G%C5A%E1%F3%02%ED%26%D1GJa%7Do%23p%0Aa%CED%EA%1D%2A%F3%0F%C9j%A7%FD%91%25%8D%EE%989%B5%E8%DD%E2%0C%9D%3AD%60pv%B5y%A2h%D8Eg%17J%E4l%B5z%92%DE%81k%86q%9F%8E%C8%21%FC%E20%7D%5D%DFy%E4%7F7q%A9M%B6%1C%A9%E7O%B8%8C%96%03%89i%91O%AE%F5%D9%5C%0C%00%3CP_%EFo%17iVN%0A%24q%F2Y%C5g%A3%B6%93x%99%F8%B2h%DA%A3%09%8E6kW%29f%A2_%BCF%F5%1F%C8%F2%03%CA%F5%AD%CE%A2%1F%AB2%C4%F1%EA%C0%14%AB9%28Q%F1V4IN%2B%03%04%2C%DB%BE%BA%EC%A8%0E%A9%D1%BC%8C%DD%BC%06%3C.%80K%14Y%27R%5D9%AC%13%1C%EAq%C5%AD%AD%29%A7%BA%B3%1B%D0%B0%F6%A5%1Ez%3F%C8Q%CAQk%3F%7D%1F%E7%F9%D3%D6%81%BE%1F%B6U%BE%AC%D5%BC%F5%2A%18%823%F5A%84%40%2C/%0C%13W%F2%9F%D5%B3%C3%F5%BFt%CB%9C%E3z%02z%20%896%86%3F%D28%3A%24%C3%06%92%E7%1B%CE%86%BF%08%C0%15%CFQ%E9k%08%7E%25%20%3A%08A%B58%96%23S%06/%E8V%CF%2A%C2%EA%C2Z%D1%05%EAI%07%94%22%D75%D0%3C%EC5J%23Z%09G%EE%1B%D8w%CB%0D%CBf%D6o%EA%B1%02%92%193%2Ax0%AA%2B%3C%1D%F4%08d%F3%BF%E1%B8%D7%F6%D6%AC%DF%10%EF%CD%01%29%13%5C%1F%A8%23H%1F%AB%13%AF%03R%F3p%E6%BA%DF%DB%E03%E9%CC%F6%24%06%DB%13%F2%1CJ%1F%84%1A%C9%0F%7C%01%E4%F25%E7%0D%E1%86%E1z%E8g%F4%A1%02%2C%10_%1A%10%1F%8C%1D%5E%16%3D%0Bt%FE%E7%F2%CA%EA%96%E7%84%E9%E0%EF%F9%F8%D4%02%08%0BJ%10%92%11%D9%0E7%09%19%02y%FB%9D%F6%96%F4%DD%F5%D7%F9%1F%FF%8E%04%97%08%17%0A%8A%08U%04a%FE"/>
</item>
</list>
</sounds>
<sprites>
<watcher var="local variable!" style="normal" color="243,118,29" x="261" y="133"/>
<sprite name="Scratch Cat" costume="1" x="72.1702787891" y="-50.0" heading="0" scale="1">
<scripts>
<script x="51" y="48">
<block s="receiveKey">
<l>up arrow</l>
</block>
<block s="createClone"/>
</script>
<script x="59" y="311">
<block s="receiveOnClone"/>
<custom-block s="jump %n">
<l>100</l>
</custom-block>
</script>
</scripts>
<blocks>
<block-definition s="jump %'height'" category="other" type="command">
<inputs>
<input type="%n">1</input>
</inputs>
<script>
<block s="forward">
<block var="height"/>
</block>
<block s="doWait">
<l>1</l>
</block>
<block s="forward">
<block s="reportProduct">
<block var="height"/>
<l>-1</l>
</block>
</block>
</script>
</block-definition>
</blocks>
<variables>
<variable name="local variable!" value="1"/>
</variables>
<costumes>
<list>
<item>
<costume name="costume1" center-x="47" center-y="55" image="data:image/svg+xml,%3Csvg%20version%3D%221.1%22%20id%3D%22cat%22%20x%3D%220px%22%20y%3D%220px%22%20width%3D%2295px%22%20height%3D%22111px%22%20viewBox%3D%220%200%2095%20111%22%20enable-background%3D%22new%200%200%2095%20111%22%20xml%3Aspace%3D%22preserve%22%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20xmlns%3Axlink%3D%22http%3A//www.w3.org/1999/xlink%22%3E%0A%20%20%3Cg%3E%0A%20%20%20%20%3Cg%20id%3D%22Layer_3%22%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22%23FAA51D%22%20stroke%3D%22%23000000%22%20d%3D%22M22.462%2C79.039c-2.415-0.451-5.304-1.309-7.742-3.503%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3BC9.268%2C70.629%2C7.526%2C62.535%2C3.672%2C64.622c-3.856%2C2.088-3.782%2C15.165%2C8.353%2C19.194c4.182%2C1.391%2C7.998%2C1.396%2C11.091%2C1.312%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc0.811-0.025%2C7.717-0.654%2C10.079-4.074c2.361-3.42%2C0.719-4.272-0.09-4.744C32.295%2C75.838%2C25.878%2C79.677%2C22.462%2C79.039z%22/%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M4.236%2C64.877c-1.989%2C0.613-3.075%2C4.998-2.076%2C8.484c0.998%2C3.49%2C2.634%2C5.022%2C3.863%2C6.398%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc1.528%2C1.038-0.72-2.402%2C1.361-4.15c2.075-1.744%2C5.733-0.914%2C5.733-0.914s-2.909-3.987-4.57-6.396%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3BC6.975%2C65.988%2C6.359%2C64.375%2C4.236%2C64.877z%22/%3E%0A%20%20%20%20%3C/g%3E%0A%20%20%20%20%3Cg%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22%23FAA51D%22%20d%3D%22M38.217%2C86.756c0%2C0-8.832%2C6.2-17.071%2C8.412l0.086%2C0.215c1.247%2C1.824%2C5.87%2C7.497-0.334%2C9.496%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc-5.333%2C1.717-15.12-13.104-10.821-15.902c2.626-1.713%2C4.892-0.252%2C4.892-0.252s3.474-1.07%2C6.001-2.345%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc4.303-2.161%2C5.784-3.453%2C5.784-3.453s4.184-4.306%2C6.856-4.137C36.281%2C78.96%2C41.669%2C83.504%2C38.217%2C86.756z%22/%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22none%22%20stroke%3D%22%23231F20%22%20stroke-width%3D%221.2%22%20d%3D%22M21.232%2C95.383c1.247%2C1.824%2C5.87%2C7.497-0.334%2C9.496%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc-5.333%2C1.717-15.329-13.344-11.03-16.145c2.626-1.713%2C5.101-0.01%2C5.101-0.01s3.474-1.072%2C6.001-2.348%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc4.303-2.161%2C5.784-3.453%2C5.784-3.453%22/%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22none%22%20stroke%3D%22%23231F20%22%20stroke-width%3D%221.2%22%20d%3D%22M38.217%2C86.756c0%2C0-10.123%2C7.107-18.804%2C8.819%22/%3E%0A%20%20%20%20%3C/g%3E%0A%20%20%20%20%3Cpath%20fill%3D%22%23FAA51D%22%20stroke%3D%22%23231F20%22%20stroke-width%3D%221.2%22%20d%3D%22M52.169%2C74.885c0%2C0%2C1.235%2C0.165%2C4.744%2C3.676%26%23xD%3B%26%23xA%3B%26%23x9%3Bc3.509%2C3.508%2C6.026%2C2.16%2C8.911%2C0.724c2.877-1.443%2C10.537-6.126%2C6.49-9.817c-4.049-3.688-6.207%2C1.146-9.715%2C2.405%26%23xD%3B%26%23xA%3B%26%23x9%3Bc-3.512%2C1.26-5.061-2.487-6.858-4.287c-0.589-0.593-1.188-1.099-1.729-1.505c0%2C0-0.971-0.76-1.906%2C2.79%26%23xD%3B%26%23xA%3B%26%23x9%3BC51.172%2C72.412%2C50.162%2C73.415%2C52.169%2C74.885z%22/%3E%0A%20%20%20%20%3Cg%20id%3D%22Layer_2_1_%22%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22%23FAA51D%22%20stroke%3D%22%23231F20%22%20stroke-width%3D%221.2%22%20d%3D%22M46.753%2C82.012c1.188-0.912%2C2.397-2.402%2C3.951-4.713%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc1.296-1.927%2C2.7-5.578%2C2.7-5.578c0.875-2.521%2C1.934-6.576-1.902-7.296c-1.553-0.291-4.079-0.098-7.67-0.776%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc-3.593-0.681-6.798-2.522-9.517%2C2.233c-2.718%2C4.757-9.59%2C8.271-1.056%2C16.563c0%2C0%2C4.901%2C3.842%2C10.764%2C9.639%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc4.831%2C4.775%2C12.045%2C10.602%2C12.045%2C10.602s18.972%2C2.188%2C19.535-0.693c1.922-9.79-14.777-6.911-14.777-6.911%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bs-4.605-3.933-6.725-5.794c-3.478-3.059-11.125-10.771-11.125-10.771%22/%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M51.253%2C75.434c0%2C0%2C2.47-2.66-2.469-5.317c-4.939-2.657-7.213-0.017-8.739%2C1.521%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc-2.644%2C2.655%2C3.443%2C6.611%2C3.443%2C6.611l3.176%2C3.204c0%2C0%2C1.738-1.647%2C2.499-2.979C50.036%2C77.26%2C51.253%2C75.434%2C51.253%2C75.434%22/%3E%0A%20%20%20%20%3C/g%3E%0A%20%20%20%20%3Cg%20id%3D%22Layer_8%22/%3E%0A%20%20%20%20%3Cpath%20fill%3D%22%23FAA51D%22%20stroke%3D%22%23231F20%22%20stroke-width%3D%221.2%22%20d%3D%22M29.926%2C73.218c0.749-0.571%2C2.889-2.202%2C4.854-3.657%26%23xD%3B%26%23xA%3B%26%23x9%3Bc2.428-1.799%2C6.117-5.849%2C1.077-7.646c-5.04-1.801-7.507%2C1.604-11.519%2C4.946c-2.159%2C1.801-5.308%2C2.699-4.319%2C6.209%26%23xD%3B%26%23xA%3B%26%23x9%3Bc0.993%2C3.511%2C4.862%2C13.408%2C11.789%2C10.17c6.929-3.239-1.799-9.18-3.06-11.157%22/%3E%0A%20%20%20%20%3Cg%20id%3D%22Layer_2%22%3E%0A%20%20%20%20%20%20%3Cpath%20fill%3D%22%23FAA51D%22%20stroke%3D%22%23231F20%22%20stroke-width%3D%221.2%22%20d%3D%22M52.709%2C14.156c-1.54-0.143-4.75-0.316-6.518-0.231%26%23xD%3B%26%23xA%3B%26%23x9%3B%26%23x9%3Bc-4.728%2C0.225-9.224%2C1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</sprite>
</sprites>
</stage>
</project>Last edited by Hardmath123 (2013-02-12 10:30:00)
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
Offline
#6853 2013-02-12 10:53:05
- joefarebrother
- Scratcher
- Registered: 2011-04-08
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
bharvey wrote:
joefarebrother wrote:
By the way, why won't this [...]
work?Ah, thanks for the example call. I read your block and had no idea what it was trying to do. I'll look this over tonight.
EDIT: I'm going to need some more documentation of what you're trying to do. Aside from the confusingness of something called list-or-procedure, in your example I got stuck right here:
http://cs.berkeley.edu/~bh/huh.png
because you're calling a one-input function with no inputs.
Sorry... Toss me a line.
Well it's supposed to be an unevaluated input. Before I implemented it, the block was originally intended to make a cyclic list with the upvar to refer to a list. It had to be unevaluated because otherwise the list would be evaluated before the upvar is set to a unique value that could be identified and replaced with the list. Then i realized that if a structure involving a procedure was part of the list and refered to the upvar, it would get the unique identifier instead of a cyclic reference. So I decided to set the upvar to the list at the end of the searching and replacing. When I came to implement it, I realized that the block would also create anonymous recursive procedures because it would fail the first <is () a [list v]> test and the upvar gets set to the procedure so it should be recursive. So I called the parameter (list or procedure) to reflect that it should take a list or a procedure.
So the line you mentioned is like that because it needs to be an unevaluated input. When I tested the block by itself, it returned the procedure, as expected, but calling it resulted in an error, like this
That shows what the block looks like, the result of using it, and the result of calling the procedure it returned.
P.S: It DOES work for cyclic lists.
My latest project is called
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#6854 2013-02-12 11:25:45
Re: BYOB 3 - Discussion Thread
bharvey wrote:
blob8108 wrote:
And I was wondering just the other day why Snap!'s float calculations were off...
Ah, do you have a specific example? Maybe we can fix it...
I've lost the project, unfortunately! I was trying to do Euler's Method for maths, so I was doing lots of very small float increments, which probably explains it. I'm not convinced it's fixable or worth fixing.
Things I've made: kurt | scratchblocks2 | this cake
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#6855 2013-02-12 11:28:29
Re: BYOB 3 - Discussion Thread
Hardmath123 wrote:
Generated by snapin8r by Hardmath123.
I like the name!
Things I've made: kurt | scratchblocks2 | this cake
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#6856 2013-02-12 11:32:08
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
Thanks!
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6857 2013-02-12 13:11:24
Re: BYOB 3 - Discussion Thread
@Hardmath123 - Why are you using encoded URIs instead of base64? These are some tests on the scratch cat SVG in the project above:
Code:
> str.length // raw 6594 > encodeURIComponent(str).length // encoded URI 9576 > btoa(str).length // base64 8792
Last edited by MathWizz (2013-02-12 13:11:39)
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#6858 2013-02-12 15:53:53
Re: BYOB 3 - Discussion Thread
@ Jens
I've re-written in Snap! the Scratch 2.0 Worm project, by replacing Color effects by several costumes. It works fine.
Two issues :
a - I can't save it (Exception 18)
b -after a while the worm stop moving for a while, like waiting, and then restarts.
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#6859 2013-02-12 15:54:13
#6860 2013-02-12 20:18:59
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
Ah, thanks a ton nXIII this was driving me crazy!
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6861 2013-02-13 18:03:35
#6862 2013-02-13 20:12:00
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
@bharvey Here's a nice article bashing CoffeeScript: http://ryanflorence.com/2011/case-against-coffeescript/. It did make me rethink some of the things I was confident of adding into my language. Also, read the comments, they're better than the actual article.
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6863 2013-02-13 22:15:29
Re: BYOB 3 - Discussion Thread
Hardmath123 wrote:
Also, read the comments, they're better than the actual article.
Hmm, I guess the comments must be on some part of the page that doesn't make it through Privoxy or NoScript. 
But, yeah, depending on whitespace is a fad.
(Btw, I think that (and five six seven) is more readable than either of the alternatives he discusses! Prefix rules.)
@jfb: I haven't forgotten your project, just really busy lately.
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#6864 2013-02-13 23:02:28
#6865 2013-02-14 04:11:35
Re: BYOB 3 - Discussion Thread
bharvey wrote:
xly wrote:
It still needs some ironing : export fails, sprites are no more draggable...
Hi, xly. I can't reproduce either of these problems; could you provide more info? Thanks.
Two days ago (discovering Scratch 2.0 for the first time ...and new Snap! CLONE instructions) I've succeeded in converting several Scratch 2.0 examples using clones in Snap! I was using Chrome +Win Xp. No problem except for SAVE (Dom except 18)
Yesterday, still using Chrome, nothing worked any more. Chrome/Snap! seemed to be corrupted (freezings)
Today, same pb usingChrome. But I've started using Firefox instead, and then everything works normally, even SAVE !
I am investigating further on.
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#6866 2013-02-14 04:35:49
Re: BYOB 3 - Discussion Thread
Hi Xavier,
DOM exception 18 probably means that you've used up all available storage space in Chrome. Choose "Open", then delete some projects (you can export them first so you still have them), then you can save again.
Due to popular request I've added a drop-down menu to the CLONE block which lets you select the sprite you want to clone, or 'myself' (e.g. for clones of clones). You probably need to update your projects and select "myself' in every clone block, otherwise the clone block won't do anything.
Oh, and don't forget to (sing after me): Clear your browser's cache.
Jens Mönig
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#6867 2013-02-14 04:39:40
Re: BYOB 3 - Discussion Thread
Hi Hardmath123,
I've added the drop-down menu to the clone block. If you convert the "myself" option don't forget to put it into <option> tags. I've also added the OF block which works same as in Scratch.
Oh, and If you're converting Scratch projects you might want to set the "scheduled" attribute in the stage's code to "true" (default is "false" or missing, which means the project runs unscheduled), so the project's animations behave more "Scratch-ly" (at 30 fps).
Jens Mönig
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#6868 2013-02-14 04:41:18
#6869 2013-02-14 05:52:53
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
It's going to be archived, and we start afresh on the 2.0 forums (which, by the way rock courtesy nXIII!). Perfect for a new Snap! topic *hint* *hint*. 
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6870 2013-02-14 05:56:10
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
I'm getting DOM 18, too, just to export a project that was created with my tool. Does changing the "app" property of the project do anything? I set it to snapin8r+Scratch2.0
I'm not actually including <option> tags in any dropdowns, and it works great.
These days I'm getting LOADS of errors with inputs (undefined is not an object, etc.). I'll post a list of these. I'm guessing it could be an innocuous typo in my dictionary.
Color inputs finally work right! So do custom blocks. Also, list inputs are being fed variables instead of dropdowns, which was causing errors (about that: should global lists be on the stage, or on the project element?).
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6871 2013-02-14 06:09:02
Re: BYOB 3 - Discussion Thread
Awesome!
You're probably also getting DOM 18 errors when running Snap! locally, because of some schizophrenic cross-origin-canvas-tainting gimmick people put in browsers. You should use <option> tags for "special" strings that will get translated in other languages, like "first", "last", "all", "any", "myself" "mouse-pointer", "edge" etc. Scratch has those, too.
Jens Mönig
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#6872 2013-02-14 06:10:56
Re: BYOB 3 - Discussion Thread
global variables are something else in Snap. They're *really* global, and the stage also has its own local set of variables (which Scratch hasn't). Therefore all of Scratch's pseudo-global variables should be "real" globals in Snap.
Jens Mönig
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#6873 2013-02-14 06:18:12
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
Ah—that was causing a scope error. Good to know. Also, this <option> business was actually causing one of the errors I mentioned above!
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6874 2013-02-14 06:22:22
- Hardmath123
- Scratcher
- Registered: 2010-02-19
- Posts: 1000+
Re: BYOB 3 - Discussion Thread
undefined is not an object (evaluating input.setcontents).
Hardmaths-MacBook-Pro:~ Hardmath$ sudo make $(whoami) a sandwich
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#6875 2013-02-14 06:26:33
Re: BYOB 3 - Discussion Thread
Can you send me the project XML you're creating, then I'll have a look. Is there any way we could be in a more direct e-mail contact? We've got a developers' mailing list set up at Berkeley. Can you maybe ask your parents to send Brian an e-mail?
Jens Mönig
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