Add PROJECT_RUN_START/STOP events

playground/playground.js

@@ -137,10 +137,10 @@ window.onload = function() {
     };
 
     // Feedback for stacks and blocks running.
-    vm.on('STACK_GLOW_ON', function(data) {
+    vm.on('SCRIPT_GLOW_ON', function(data) {
         workspace.glowStack(data.id, true);
     });
-    vm.on('STACK_GLOW_OFF', function(data) {
+    vm.on('SCRIPT_GLOW_OFF', function(data) {
         workspace.glowStack(data.id, false);
     });
     vm.on('BLOCK_GLOW_ON', function(data) {

src/engine/runtime.js

@@ -83,6 +83,12 @@ var Runtime = function () {
      */
     this._scriptGlowsPreviousFrame = [];
 
+    /**
+     * Number of threads running during the previous frame
+     * @type {number}
+     */
+    this._threadCount = 0;
+
     /**
      * Currently known number of clones, used to enforce clone limit.
      * @type {number}
@@ -159,13 +165,13 @@ Runtime.STAGE_HEIGHT = 360;
  * Event name for glowing a script.
  * @const {string}
  */
-Runtime.SCRIPT_GLOW_ON = 'STACK_GLOW_ON';
+Runtime.SCRIPT_GLOW_ON = 'SCRIPT_GLOW_ON';
 
 /**
  * Event name for unglowing a script.
  * @const {string}
  */
-Runtime.SCRIPT_GLOW_OFF = 'STACK_GLOW_OFF';
+Runtime.SCRIPT_GLOW_OFF = 'SCRIPT_GLOW_OFF';
 
 /**
  * Event name for glowing a block.
@@ -179,6 +185,18 @@ Runtime.BLOCK_GLOW_ON = 'BLOCK_GLOW_ON';
  */
 Runtime.BLOCK_GLOW_OFF = 'BLOCK_GLOW_OFF';
 
+/**
+ * Event name for glowing the green flag
+ * @const {string}
+ */
+Runtime.PROJECT_RUN_START = 'PROJECT_RUN_START';
+
+/**
+ * Event name for unglowing the green flag
+ * @const {string}
+ */
+Runtime.PROJECT_RUN_STOP = 'PROJECT_RUN_STOP';
+
 /**
  * Event name for visual value report.
  * @const {string}
@@ -550,8 +568,9 @@ Runtime.prototype._step = function () {
         }
     }
     this.redrawRequested = false;
-    var inactiveThreads = this.sequencer.stepThreads();
-    this._updateGlows(inactiveThreads);
+    var doneThreads = this.sequencer.stepThreads();
+    this._updateGlows(doneThreads);
+    this._setThreadCount(this.threads.length + doneThreads.length);
     if (this.renderer) {
         // @todo: Only render when this.redrawRequested or clones rendered.
         this.renderer.draw();
@@ -639,6 +658,22 @@ Runtime.prototype._updateGlows = function (optExtraThreads) {
     this._scriptGlowsPreviousFrame = finalScriptGlows;
 };
 
+/**
+ * Emit run start/stop after each tick. Emits when `this.threads.length` goes
+ * between non-zero and zero
+ *
+ * @param {number} threadCount The new threadCount
+ */
+Runtime.prototype._setThreadCount = function (threadCount) {
+    if (this._threadCount === 0 && threadCount > 0) {
+        this.emit(Runtime.PROJECT_RUN_START);
+    }
+    if (this._threadCount > 0 && threadCount === 0) {
+        this.emit(Runtime.PROJECT_RUN_STOP);
+    }
+    this._threadCount = threadCount;
+};
+
 /**
  * "Quiet" a script's glow: stop the VM from generating glow/unglow events
  * about that script. Use when a script has just been deleted, but we may
@@ -659,9 +694,9 @@ Runtime.prototype.quietGlow = function (scriptBlockId) {
  */
 Runtime.prototype.glowBlock = function (blockId, isGlowing) {
     if (isGlowing) {
-        this.emit(Runtime.BLOCK_GLOW_ON, blockId);
+        this.emit(Runtime.BLOCK_GLOW_ON, {id: blockId});
     } else {
-        this.emit(Runtime.BLOCK_GLOW_OFF, blockId);
+        this.emit(Runtime.BLOCK_GLOW_OFF, {id: blockId});
     }
 };
 
@@ -672,9 +707,9 @@ Runtime.prototype.glowBlock = function (blockId, isGlowing) {
  */
 Runtime.prototype.glowScript = function (topBlockId, isGlowing) {
     if (isGlowing) {
-        this.emit(Runtime.SCRIPT_GLOW_ON, topBlockId);
+        this.emit(Runtime.SCRIPT_GLOW_ON, {id: topBlockId});
     } else {
-        this.emit(Runtime.SCRIPT_GLOW_OFF, topBlockId);
+        this.emit(Runtime.SCRIPT_GLOW_OFF, {id: topBlockId});
     }
 };
 
@@ -684,7 +719,7 @@ Runtime.prototype.glowScript = function (topBlockId, isGlowing) {
  * @param {string} value Value to show associated with the block.
  */
 Runtime.prototype.visualReport = function (blockId, value) {
-    this.emit(Runtime.VISUAL_REPORT, blockId, String(value));
+    this.emit(Runtime.VISUAL_REPORT, {id: blockId, value: String(value)});
 };
 
 /**

src/engine/sequencer.js

@@ -35,7 +35,7 @@ Sequencer.prototype.stepThreads = function () {
     var numActiveThreads = Infinity;
     // Whether `stepThreads` has run through a full single tick.
     var ranFirstTick = false;
-    var inactiveThreads = [];
+    var doneThreads = [];
     // Conditions for continuing to stepping threads:
     // 1. We must have threads in the list, and some must be active.
     // 2. Time elapsed must be less than WORK_TIME.
@@ -51,8 +51,8 @@ Sequencer.prototype.stepThreads = function () {
             if (activeThread.stack.length === 0 ||
                 activeThread.status === Thread.STATUS_DONE) {
                 // Finished with this thread.
-                if (inactiveThreads.indexOf(activeThread) < 0) {
-                    inactiveThreads.push(activeThread);
+                if (doneThreads.indexOf(activeThread) < 0) {
+                    doneThreads.push(activeThread);
                 }
                 continue;
             }
@@ -77,12 +77,12 @@ Sequencer.prototype.stepThreads = function () {
     }
     // Filter inactive threads from `this.runtime.threads`.
     this.runtime.threads = this.runtime.threads.filter(function (thread) {
-        if (inactiveThreads.indexOf(thread) > -1) {
+        if (doneThreads.indexOf(thread) > -1) {
             return false;
         }
         return true;
     });
-    return inactiveThreads;
+    return doneThreads;
 };
 
 /**

src/index.js

@@ -25,23 +25,29 @@ var VirtualMachine = function () {
      */
     instance.editingTarget = null;
     // Runtime emits are passed along as VM emits.
-    instance.runtime.on(Runtime.SCRIPT_GLOW_ON, function (id) {
-        instance.emit(Runtime.SCRIPT_GLOW_ON, {id: id});
+    instance.runtime.on(Runtime.SCRIPT_GLOW_ON, function (glowData) {
+        instance.emit(Runtime.SCRIPT_GLOW_ON, glowData);
     });
-    instance.runtime.on(Runtime.SCRIPT_GLOW_OFF, function (id) {
-        instance.emit(Runtime.SCRIPT_GLOW_OFF, {id: id});
+    instance.runtime.on(Runtime.SCRIPT_GLOW_OFF, function (glowData) {
+        instance.emit(Runtime.SCRIPT_GLOW_OFF, glowData);
     });
-    instance.runtime.on(Runtime.BLOCK_GLOW_ON, function (id) {
-        instance.emit(Runtime.BLOCK_GLOW_ON, {id: id});
+    instance.runtime.on(Runtime.BLOCK_GLOW_ON, function (glowData) {
+        instance.emit(Runtime.BLOCK_GLOW_ON, glowData);
     });
-    instance.runtime.on(Runtime.BLOCK_GLOW_OFF, function (id) {
-        instance.emit(Runtime.BLOCK_GLOW_OFF, {id: id});
+    instance.runtime.on(Runtime.BLOCK_GLOW_OFF, function (glowData) {
+        instance.emit(Runtime.BLOCK_GLOW_OFF, glowData);
     });
-    instance.runtime.on(Runtime.VISUAL_REPORT, function (id, value) {
-        instance.emit(Runtime.VISUAL_REPORT, {id: id, value: value});
+    instance.runtime.on(Runtime.PROJECT_RUN_START, function () {
+        instance.emit(Runtime.PROJECT_RUN_START);
     });
-    instance.runtime.on(Runtime.SPRITE_INFO_REPORT, function (data) {
-        instance.emit(Runtime.SPRITE_INFO_REPORT, data);
+    instance.runtime.on(Runtime.PROJECT_RUN_STOP, function () {
+        instance.emit(Runtime.PROJECT_RUN_STOP);
+    });
+    instance.runtime.on(Runtime.VISUAL_REPORT, function (visualReport) {
+        instance.emit(Runtime.VISUAL_REPORT, visualReport);
+    });
+    instance.runtime.on(Runtime.SPRITE_INFO_REPORT, function (spriteInfo) {
+        instance.emit(Runtime.SPRITE_INFO_REPORT, spriteInfo);
     });
 
     this.blockListener = this.blockListener.bind(this);