About the new version 12.2.1, I would be really curious about the “extension tweaks for evil educators with no courage or imagination” 
Thanks in advance!
Heres what I noticed.
In objects.js:
+StageMorph.prototype.runInitScripts = function () {
+ // Allow each sprite to run one first step before sending the
+ // green flag event.
+ // usage example: reset the sprite to its original state
+ this.receiveUserInteraction('init', true, true);
+ this.children.forEach(morph => {
+ if (morph instanceof SpriteMorph) {
+ morph.receiveUserInteraction('init', true, true);
}
});
};
And, some new extensions
SnapExtensions.primitives.set(
+ 'ide_stepping([on?])',
+ function (bool) {
+ var stage = this.parentThatIsA(StageMorph),
+ ide = stage.parentThatIsA(IDE_Morph);
+ if (bool === '') {return Process.prototype.enableSingleStepping; }
+ Process.prototype.enableSingleStepping = !!bool;
+ ide.controlBar.steppingButton.refresh();
+ ide.controlBar.refreshSlider();
+ if (!Process.prototype.enableSingleStepping) {
+ stage.threads.processes.forEach(proc => {
+ if (!proc.isPaused) {
+ proc.unflash();
+ }
+ });
+ }
+ }
+);
+
+SnapExtensions.primitives.set(
+ 'ide_flash([secs])',
+ function (flashTime) {
+ var ide = this.parentThatIsA(IDE_Morph);
+ if (flashTime === '') {return Process.prototype.flashTime; }
+ Process.prototype.flashTime = Math.min(
+ Math.max(flashTime, 0), 0.6
+ );
+ ide.controlBar.refreshSlider();
+ }
+);
+
+SnapExtensions.primitives.set(
+ 'ide_livecode([on?])',
+ function (bool) {
+ if (bool === '') {return Process.prototype.enableLiveCoding; }
+ Process.prototype.enableLiveCoding = !!bool;
+ }
+);
+
+SnapExtensions.primitives.set(
+ 'ide_palette_buttons([on?])',
+ function (bool) {
+ var ide = this.parentThatIsA(IDE_Morph);
+ if (bool === '') {return ide.scene.showPaletteButtons; }
+ ide.scene.showPaletteButtons = !!bool;
+ ide.flushBlocksCache();
+ ide.refreshPalette();
+ }
+);
+
+SnapExtensions.primitives.set(
+ 'ide_start_button([on?])',
+ function (bool) {
+ var ide = this.parentThatIsA(IDE_Morph);
+ if (bool === '') {return ide.controlBar.startButton.isVisible(); }
+ if (!ide.isAppMode) {
+ if (bool) {
+ ide.controlBar.startButton.show();
+ } else {
+ ide.controlBar.startButton.hide();
+ }
+ }
+ }
+);
Guessing these are for tutorial makers who might want a button on the stage to start the tutorial (or maybe a button on the tutorial) so they may be able to do a handful of resetting, or to prevent blocks frombeing made, etc etc
I see. Thanks!