Scratch-gui: Manual execution of blocks

[caxapexac]

I'm trying to generate arduino C code using scratch block. I can't store generated code because of vm architecture. For example, this is code for builtin 'if' statement

if (args, util) {
        const condition = Cast.toBoolean(args.CONDITION);
        if (condition) {
            util.startBranch(1, false);
        }
}

I want to make something like this:

if (args, util) {
        const condition = Cast.toString(args.CONDITION);
        const body = recursive_call_for_inner_blocks(inner_blocks);
        return `if (${condition}) { ${body} }`;
}

How can I do this? Maybe there is a better way to generate code using scratch blocks?

[apple502j]

scratch-vm is not made for such purpose - it's made for executing Scratch project. I'm sure there are some open-source arduino generator using Scratch 3.0.

[caxapexac]

@apple502j I have only found forks with firmata (no code generation, only live control). Can you give me examples please?

[apple502j]

Hmm yeah most of my search results are in older versions... @caxapexac I think you should parse the JSON, though. For example, args.CONDITION is NOT the passed condition (like even if you pass timer > 10, CONDITION is executed value (true or false))

[takaokouji]

@caxapexac

Can you give me examples please?

It's Smalruby ( https://github.com/smalruby/smalruby3-gui/ and https://smalruby.jp/smalruby3-gui/ ) that is forked from scratch-gui.
Smalruby can generate from scratch's block to ruby code. And it can convert ruby code to scratch's blocks.

Related code is here:

• https://github.com/smalruby/smalruby3-gui/blob/develop/src/lib/generator.js
• https://github.com/smalruby/smalruby3-gui/blob/develop/src/lib/ruby-generator/index.js
• https://github.com/smalruby/smalruby3-gui/blob/develop/src/lib/ruby-generator/control.js

[caxapexac]

Thank you! I'll try it out

[fsih]

@caxapexac scratch-blocks was originally branched from Blockly, which does convert blocks into code. It may be easier for you to start there: https://developers.google.com/blockly