Leopard: Convert Scratch projects to JavaScript AUTOMATICALLY!

Pr_Testing

PullJosh how are u so clever

Remixer56

One of my projects did not work: https://scratch.mit.edu/projects/363945491/

Scratch on,
Remixer56

-InsanityPlays-

It's called forkphorus not phosphorus now. And btw does it have dark mode?

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-InsanityPlays- wrote:
It's called forkphorus not phosphorus now. And btw does it have dark mode?

No, those are two separate things, Forkphorus is based off of Phosphorus. And Forkphorus has it but Phosphrous doesn't. Also, this is for Leopard, not Forkphorus or Phosphorus.
Yes, I made sure I said both Forkphorus and Phosphorus in each sentence.

PullJosh

Pr_Testing wrote:
PullJosh how are u so clever

It isn't just me!

Convert your Scratch projects to JavaScript automatically with Leopard!

Pr_Testing

PullJosh wrote:
Pr_Testing wrote:
PullJosh how are u so clever
It isn't just me!

ur definitely one of em!

isn’t it u who thought of the leopard idea? (apart from all ur tutorials which are useful and in depth - u are a clever lad) of course there are loads of ppl out there

theXliner

Hmm I have a VERY MINOR suggestion:
Could you make a Python3 API? I mostly code python, and is currently trying to understand Swift & C++. JavaScript/Other languages are on the bottom of my list. So a Python3 API for sh-edit would be nice.

apple502j

theXliner wrote:
Hmm I have a VERY MINOR suggestion:
Could you make a Python3 API? I mostly code python, and is currently trying to understand Swift & C++. JavaScript/Other languages are on the bottom of my list. So a Python3 API for sh-edit would be nice.

Maybe I can make it - but let me fix some bugs in parse-sb3-blocks first

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DecaTen

I've noticed that the trigonometric functions do not take Scratch's 90 degree offset into account.

greedjesse

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Pr_Testing

theXliner

apple502j wrote:
theXliner wrote:
Hmm I have a VERY MINOR suggestion:
Could you make a Python3 API? I mostly code python, and is currently trying to understand Swift & C++. JavaScript/Other languages are on the bottom of my list. So a Python3 API for sh-edit would be nice.
Maybe I can make it - but let me fix some bugs in parse-sb3-blocks first

I'm making one right now! It's a private GitHub repo for now. If you have a GitHub account, tell me your username! Then we could work on this together. The thing is, I plan to make it pure python. It is basically scratch-to-pygame.

EDIT: I also use Atom, so we can use the Teletype ability. I'm also working on parsing the JSON to tokens, so any language can benefit. Psst, I only know python thoroughly.

Last edited by theXliner (July 8, 2020 16:42:15)

Pr_Testing

theXliner wrote:
apple502j wrote:
theXliner wrote:
Hmm I have a VERY MINOR suggestion:
Could you make a Python3 API? I mostly code python, and is currently trying to understand Swift & C++. JavaScript/Other languages are on the bottom of my list. So a Python3 API for sh-edit would be nice.
Maybe I can make it - but let me fix some bugs in parse-sb3-blocks first
I'm making one right now! It's a private GitHub repo for now. If you have a GitHub account, tell me your username! Then we could work on this together. The thing is, I plan to make it pure python. It is basically scratch-to-pygame.

call it purrr

PullJosh

DecaTen wrote:
I've noticed that the trigonometric functions do not take Scratch's 90 degree offset into account.

Good catch! The issue is actually that the trig functions do use Scratch's directional system when they should use regular degrees (where 0 = right).

I've updated Leopard so that this is no longer an issue.

Convert your Scratch projects to JavaScript automatically with Leopard!

Bears8

This is great!. I've noticed that some of my projects don't work with leopard. When the code is converted nothing happens and it just remains a black screen. Then when I click “Edit as javascript” it has me download “codesandbox.json”

BamBozzle

Very impressive my guy! Well done! I just want to highlight that this monstrosity doesn't work on it (https://scratch.mit.edu/projects/395414289/) although I don't recommend filtering through all the 4000ish blocks but if youre interested

theXliner

How does sb-edit work? Which JSON does it get input from? The unzipped sb3 or the project.scratch link? Because I want to fork that JavaScript into return a list of tokens which then anyone can parse.

Sheep_maker

BamBozzle wrote:
Very impressive my guy! Well done! I just want to highlight that this monstrosity doesn't work on it (https://scratch.mit.edu/projects/395414289/) although I don't recommend filtering through all the 4000ish blocks but if youre interested

It seems that in Sprite1's Map custom block, it's trying to get item rm of map1, but since rm starts at zero and hasn't yet been changed, it tries to get the length of a nonexistent string item in the list, which throws an error in JS

  *map() {
    this.stage.vars.rm = 0;
    for (let i = 0; i < this.stage.vars.map1.length + 1; i++) {
      this.stage.vars.rl = 0;
      for (
        let i = 0;
        i < this.stage.vars.map1[this.stage.vars.rm - 1].length + 1;
        //                                               ^^^^^^
        // TypeError: Cannot read property 'length' of undefined
        i++
      ) {

I wonder if Leopard will be hip and modern and use the optional chaining operator ?. to avoid this

theXliner wrote:
How does sb-edit work? Which JSON does it get input from? The unzipped sb3 or the project.scratch link? Because I want to fork that JavaScript into return a list of tokens which then anyone can parse.

You can use Project.fromSb3 and pass in a buffer of the zipped .sb3 file or Project.fromSb3JSON with the project.json from projects.scratch.mit.edu

Last edited by Sheep_maker (July 8, 2020 19:42:30)

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PullJosh

Bears8 wrote:
This is great!. I've noticed that some of my projects don't work with leopard. When the code is converted nothing happens and it just remains a black screen. Then when I click “Edit as javascript” it has me download “codesandbox.json”

That's interesting.

Could you post some broken project links?

Convert your Scratch projects to JavaScript automatically with Leopard!

PullJosh

I updated the first post with this new section called “Upcoming Improvements”.

PullJosh wrote:
Upcoming Improvements
Based on the feedback I'm seeing on the forums and in comments, these are the top-priority issues to solve (most important first):
Sprite layering doesn't work! go to front/back & go forward/backward blocks need to be implemented.
Projects run too fast! Leopard projects currently run at 60fps, but it should also be possible to slow them down to 30fps.
If touching edge and if on edge, bounce blocks don't work.
Lots of little bugs that all add up to cause issues

Have I sorted these priorities correctly? I'd love to hear any comments you might have.

Convert your Scratch projects to JavaScript automatically with Leopard!

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