Mesh extension

src/engine/block-utility.js

@@ -7,6 +7,8 @@ const Timer = require('../util/timer');
  * runtime, thread, target, and convenient methods.
  */
 
+let lastInstance;
+
 class BlockUtility {
     constructor (sequencer = null, thread = null) {
         /**
@@ -25,6 +27,8 @@ class BlockUtility {
         this._nowObj = {
             now: () => this.sequencer.runtime.currentMSecs
         };
+
+        lastInstance = this;
     }
 
     /**
@@ -235,6 +239,14 @@ class BlockUtility {
             return devObject[func].apply(devObject, args);
         }
     }
+
+    /**
+     * Returns BlockUtility instance to use same instance in runtime and extension.
+     * @return {BlockUtility} The BlockUtility instance.
+     */
+    static lastInstance () {
+        return lastInstance;
+    }
 }
 
 module.exports = BlockUtility;

src/engine/runtime.js

@@ -1488,6 +1488,20 @@ class Runtime extends EventEmitter {
         return isConnected;
     }
 
+    /**
+     * Returns the connected message.
+     * @param {string} extensionId - the id of the extension.
+     * @return {string|null} - the connected message.
+     */
+    getPeripheralConnectedMessage (extensionId) {
+        if (this.getPeripheralIsConnected(extensionId) &&
+            this.peripheralExtensions[extensionId] &&
+            this.peripheralExtensions[extensionId].connectedMessage) {
+            return this.peripheralExtensions[extensionId].connectedMessage();
+        }
+        return null;
+    }
+
     /**
      * Emit an event to indicate that the microphone is being used to stream audio.
      * @param {boolean} listening - true if the microphone is currently listening.

src/engine/target.js

@@ -305,6 +305,20 @@ class Target extends EventEmitter {
         }
     }
 
+    /**
+     * Sets the variable value with the given id to newValue.
+     * @param {string} id Id of variable to set value.
+     * @param {object} newValue New value for the variable.
+     */
+    setVariableValue (id, newValue) {
+        if (this.variables.hasOwnProperty(id)) {
+            const variable = this.variables[id];
+            if (variable.id === id) {
+                variable.value = newValue;
+            }
+        }
+    }
+
     /**
      * Renames the variable with the given id to newName.
      * @param {string} id Id of variable to rename.

src/extension-support/extension-manager.js

@@ -23,7 +23,8 @@ const builtinExtensions = {
     ev3: () => require('../extensions/scratch3_ev3'),
     makeymakey: () => require('../extensions/scratch3_makeymakey'),
     boost: () => require('../extensions/scratch3_boost'),
-    gdxfor: () => require('../extensions/scratch3_gdx_for')
+    gdxfor: () => require('../extensions/scratch3_gdx_for'),
+    mesh: () => require('../extensions/scratch3_mesh')
 };
 
 /**