Merge pull request scratchfoundation#1303 from paulkaplan/loudness-hat

Add implementation for "When loudness >" block

Author: paulkaplan

src/blocks/scratch3_event.js

@@ -69,9 +69,11 @@ class Scratch3EventBlocks {
     hatGreaterThanPredicate (args, util) {
         const option = Cast.toString(args.WHENGREATERTHANMENU).toLowerCase();
         const value = Cast.toNumber(args.VALUE);
-        // @todo: Other cases :)
-        if (option === 'timer') {
+        switch (option) {
+        case 'timer':
             return util.ioQuery('clock', 'projectTimer') > value;
+        case 'loudness':
+            return this.runtime.audioEngine && this.runtime.audioEngine.getLoudness() > value;
         }
         return false;
     }

test/unit/blocks_event.js

@@ -96,3 +96,17 @@ test('#760 - broadcastAndWait', t => {
 
     t.end();
 });
+
+test('When > hat - loudness', t => {
+    const rt = new Runtime();
+    rt.audioEngine = {getLoudness: () => 10};
+    const e = new Event(rt);
+    const args = {
+        WHENGREATERTHANMENU: 'LOUDNESS',
+        VALUE: '11'
+    };
+    t.equal(e.hatGreaterThanPredicate(args), false);
+    args.VALUE = '5';
+    t.equal(e.hatGreaterThanPredicate(args), true);
+    t.end();
+});