Merge pull request #1102 from towerofnix/misc-noop-vm

"Implement" miscellaneous no-op obsolete blocks

src/blocks/scratch3_looks.js

@@ -235,6 +235,7 @@ class Scratch3LooksBlocks {
             looks_thinkforsecs: this.thinkforsecs,
             looks_show: this.show,
             looks_hide: this.hide,
+            looks_hideallsprites: () => {}, // legacy no-op block
             looks_switchcostumeto: this.switchCostume,
             looks_switchbackdropto: this.switchBackdrop,
             looks_switchbackdroptoandwait: this.switchBackdropAndWait,
@@ -245,6 +246,8 @@ class Scratch3LooksBlocks {
             looks_cleargraphiceffects: this.clearEffects,
             looks_changesizeby: this.changeSize,
             looks_setsizeto: this.setSize,
+            looks_changestretchby: () => {}, // legacy no-op blocks
+            looks_setstretchto: () => {},
             looks_gotofrontback: this.goToFrontBack,
             looks_goforwardbackwardlayers: this.goForwardBackwardLayers,
             looks_size: this.getSize,

src/blocks/scratch3_sensing.js

@@ -67,7 +67,8 @@ class Scratch3SensingBlocks {
             sensing_loudness: this.getLoudness,
             sensing_loud: this.isLoud,
             sensing_askandwait: this.askAndWait,
-            sensing_answer: this.getAnswer
+            sensing_answer: this.getAnswer,
+            sensing_userid: () => {} // legacy no-op block
         };
     }
 

src/serialization/sb2_specmap.js

@@ -266,6 +266,11 @@ const specMap = {
         argMap: [
         ]
     },
+    'hideAll': {
+        opcode: 'looks_hideallsprites',
+        argMap: [
+        ]
+    },
     'lookLike:': {
         opcode: 'looks_switchcostumeto',
         argMap: [
@@ -344,6 +349,26 @@ const specMap = {
             }
         ]
     },
+    'changeStretchBy:': {
+        opcode: 'looks_changestretchby',
+        argMap: [
+            {
+                type: 'input',
+                inputOp: 'math_number',
+                inputName: 'CHANGE'
+            }
+        ]
+    },
+    'setStretchTo:': {
+        opcode: 'looks_setstretchto',
+        argMap: [
+            {
+                type: 'input',
+                inputOp: 'math_number',
+                inputName: 'STRETCH'
+            }
+        ]
+    },
     'comeToFront': {
         opcode: 'looks_gotofrontback',
         argMap: [
@@ -1048,6 +1073,11 @@ const specMap = {
         argMap: [
         ]
     },
+    'getUserId': {
+        opcode: 'sensing_userid',
+        argMap: [
+        ]
+    },
     '+': {
         opcode: 'operator_add',
         argMap: [