Scratch

MountainBoy wrote:

I'm prepping to do a java program that can me me (and others) code in scratch in notepad (type code & compile it into .sb format with my program) and I'm trying to figure out how to right the program's converter which requires knowledge of the .sb file Help?


______________________________________________________________________________
Scratch on!

when gf clicked
if <(Scratch) = [Awesome]>
  repeat until <(timer) > [infinite]>
    go to [cool people's place]
  end
end

Fixed. 

Last edited by stevetheipad (2012-07-27 16:03:51)

Hi!

I'm working on something similar in Python: I wrote a library called Kurt which can read/write .sb files, including scripts and images. It includes a decompiler script that takes a Scratch project and outputs a bunch of directories for each sprite containing all the images and scripts in scratchblocks format.

I'm working on a compiler to reverse the process and create an .sb file from a similar directory structure, which requires parsing scratchblocks. I'm using the Python version of lex & yacc to do this, which seems to be the best way.

I started some pretty extensive documentation over on the wiki, so that's a good place to start. Feel free to ask me anything if you get stuck -- images are particularly tricky.

Good luck, and have fun! 

MountainBoy wrote:

blob8108 wrote:

Hi!

I'm working on something similar in Python: I wrote a library called Kurt which can read/write .sb files, including scripts and images. It includes a decompiler script that takes a Scratch project and outputs a bunch of directories for each sprite containing all the images and scripts in scratchblocks format.

I'm working on a compiler to reverse the process and create an .sb file from a similar directory structure, which requires parsing scratchblocks. I'm using the Python version of lex & yacc to do this, which seems to be the best way.

I started some pretty extensive documentation over on the wiki, so that's a good place to start. Feel free to ask me anything if you get stuck -- images are particularly tricky.

Good luck, and have fun! 

Thanks for the idea, I'm going to the wiki right now. But I can only do java right now, then ObjectiveC so python would be hard for me.

stevetheipad wrote:

Also, this would be better suited in advanced topics

thankyou sorry about the block thing I'm trying to figure out how to get a signature.
and did you move the topic? If so thanks 

Isn't python easier to learn than java/objective C?

and objective C is mac only isn't it

MountainBoy wrote:

I'm prepping to do a java program that can me me (and others) code in scratch in notepad (type code & compile it into .sb format with my program) and I'm trying to figure out how to right the program's converter which requires knowledge of the .sb file Help?


______________________________________________________________________________
Scratch on!

when gf clicked
if <<Scratch = Awesome>>
  repeat until <(timer) > [infinite]>
    go to [cool people's place]
  end
end

Sorry, I don't think we have good documentation for the .sb file format (or if we do, I haven't seen it.)

The next format - .sb2, will just be a json file with a zip file containing the binary stuff like images and sounds. We do plan to document that more clearly - it might be best to wait.

MathWizz wrote:

Lightnin wrote:

Sorry, I don't think we have good documentation for the .sb file format (or if we do, I haven't seen it.)

The next format - .sb2, will just be a json file with a zip file containing the binary stuff like images and sounds. We do plan to document that more clearly - it might be best to wait.

You haven't seen this?

I wondered if Lightnin had somehow missed that — but it is a little outdated, so doesn't mention things like lists. (So is from before Scratch 1.3?)