Call block from Javascript?

toontalk · April 6, 2020, 1:56am

I figured out how to connect Snap! to the Web Speech API first by looking at the examples in the Example project called JSFunctions. And the infinite precision and rational number library.

You can see the blocks I built at https://ecraft2learn.github.io/ai/

tguneysu · April 6, 2020, 5:49am

@toontalk
Thanks for this. Very nicely done. I will study and try to decipher.

cymplecy · July 12, 2020, 11:03am

Could I ask if there is some explicit documentation on how to to send a broadcast and update global variables from a javascript function running inside a Snap block?

I tried following info via the links on this thread but didn't manage to find anything

jens · July 12, 2020, 12:06pm

are you looking for the api documentation?

github.com

jmoenig/Snap/blob/master/API.md

# The Snap! API

Jens Mönig, October 20, 2020

This document describes how Snap! can be accessed from an outside program to start scripts, send and retrieve information. The model use case is embedding interactive Snap! projects in other websites such as MOOCs or other adaptive learning platforms.

This experimental Snap! API is a set of methods for an IDE_Morph containing a Snap! project. These methods are maintained to work with future versions of Snap! They can be used to trigger scripts, get feedback from running scripts, and access the project's global variables.

Currently the API consists of the following methods:

#### Broadcast Messages (and optionally wait)

* IDE_Morph.prototype.broadcast()

#### Listen to Messages

* IDE_Morph.prototype.addMessageListenerForAll()
* IDE_Morph.prototype.addMessageListener()
* IDE_Morph.prototype.getMessages()

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cymplecy · July 12, 2020, 12:30pm

Already got broadcasts working

  ...
  ide = world.children[0];
  ...

  ide.broadcast("test");
  ...

and updating variable as well

ide.setVar("payload","test_value");