_nix wrote:

sephiroth76 wrote:

_nix wrote:

Extensions actually can read data from sprites. Use the “util.target” variable:

myExtensionFunction (util) {
    const {x, y} = util.target;
    // etc
}

If you want to access data for every sprite, use “vm.runtime.targets”:

const sprites = vm.targets.filter(target => !target.isStage);
const data = sprites.map(sprite => ({x: sprite.x, y: sprite.x});
sendData(data); // or whatever your code is :P

to use this code do I have to import something?
This gave me this error:
Warning: Failed prop type: Invalid prop `monitors` of type `OrderedMap` supplied to `MonitorList`, expected instance of `OrderedMap`.
…
​

I believe that warning is actually normal (it's a bug in the current version of scratch-gui). You can ignore it. If your code isn't working, you'll need to share the full extension file here (and an explanation of what you want it to do, and what's actually happening instead).

BTW, you can use the tag [code] to format text like code (monospace):

[code]
...
[/code]

lktornado360 wrote:

How do you download the code as a .js?

sephiroth76 wrote:

lktornado360 wrote:

How do you download the code as a .js?

your question is not so clear.
you can download the full source code of scratch3 (js) from this: link https://github.com/LLK/
however, you can test your js extension here
https://sheeptester.github.io/scratch-gui/?url=https://sheeptester.github.io/javascripts/Nitroblocks.js
if you are developing an extension and you don't want to fork locally your scratch3 app.

NitroCipher wrote:

Save this code to your computer as a js file, in my case it is NitroBlock_3.js

AmazingMech2418 wrote:

I actually found stuff like this on the Scratch 3.0 source code extension example. How do you add an extension to a project in Scratch 3?

chop2008 wrote:

I had no idea that you can make custom scratch extensions. Thanks for this new change. can you publish your scratch projects with custom extensions?

KimPlayz4LK wrote:

To make it in .js file, click on File on the top, download, and when the PC will ask you where save it, enter:
'File.js'. The .js is wery important, because it showing the format of the file.
Soo, try it. But i tryed it, and look what happened! All was not in javascript! You'll see… Good luck!

<[library] = [liBRARY]>

fruccolo wrote:

Hello to everybody,
I'm tryingo to develop an extension for a device that has inside Arduino and i'd want to open a socket with it. I have some trouble to require npm module like socket.io. In wich folder i have to execute the npm install command to find the module with require('socket.io') string?

importScripts('/socket.io/socket.io.js')

NitroCipher wrote:

…you have to your own url for the extension. In your case it would be https://sheeptester.github.io/scratch-gui/?url=https://cottignolima.github.io/scratch_extension/test.js

psicinfoscratch wrote:

NitroCipher wrote:

…you have to your own url for the extension. In your case it would be https://sheeptester.github.io/scratch-gui/?url=https://cottignolima.github.io/scratch_extension/test.js

Hi,
I've tried, just to test the structure, to take the same js file, and called https://sheeptester.github.io/scratch-gui/?url=https://raw.githubusercontent.com/sarini68/hello-world/master/tests1.js but nothing happens, while if I call
https://sheeptester.github.io/scratch-gui/?url=https://nitrocipher.github.io/ext2to3/ext-test.js? it works.
Could you please explain to me why? thanks

Sheep_maker wrote:

psicinfoscratch wrote:

NitroCipher wrote:

…you have to your own url for the extension. In your case it would be https://sheeptester.github.io/scratch-gui/?url=https://cottignolima.github.io/scratch_extension/test.js

Hi,
I've tried, just to test the structure, to take the same js file, and called https://sheeptester.github.io/scratch-gui/?url=https://raw.githubusercontent.com/sarini68/hello-world/master/tests1.js but nothing happens, while if I call
https://sheeptester.github.io/scratch-gui/?url=https://nitrocipher.github.io/ext2to3/ext-test.js? it works.
Could you please explain to me why? thanks

According to the console, its MIME type is text/plain instead of text/javascript, so the browser thinks it isn't a JS file that should be executed (for security reasons)

You should turn on Github pages in your repository settings (Options > Github Pages > set Source to “master branch”), and then it should work if you use https://sarini68.github.io/hello-world/tests1.js

psicinfoscratch wrote:

Now it works, thanks!
Could I ask you why apparently some of your blocks (from the example https://nitrocipher.github.io/ext2to3/ext-test.js? ) do not return anything? I am intending, in particular, “javascript”, “prompt user with” and “get data from url”

• it's served on http sites, and now https sites cannot request anything from a http site for security reasons
  
• Google doesn't allow other web pages to fetch it for security reasons
  

psicinfoscratch wrote:

-snip-

Now it works, thanks!
Could I ask you why apparently some of your blocks (from the example https://nitrocipher.github.io/ext2to3/ext-test.js? ) do not return anything? I am intending, in particular, “javascript”, “prompt user with” and “get data from url”