some changes

assets/js/main.js

@@ -117,6 +117,12 @@ window.addEventListener('load', function() {
     var foundTrue = false;
     // Function to process code and highlight blocks and lines
     function processCode(index) {
+
+        if(sumorobot.disconnected || !sumorobot.codeExecute) {
+          $('.btn-stop').click();
+          return;
+        }
+
         // When all lines are already processed
         if (lines.length == 0) return;
         // Split into code and block ID

assets/js/sumorobot.js

@@ -8,10 +8,14 @@ var Sumorobot = function(wsUri, robotId) {
     this.watchdogCounter = 0;
     // When connection was intentionally closed
     this.terminate = false;
+    // when there is no connection with robot
+    this.disconnected = true;
     // To store Blockly code
     this.blocklyCode = '';
     // If robot is moving
     this.moving = false;
+
+    this.codeExecute = false;
     // Sensor data
     this.sensors = {
         'opponent': 99,
@@ -33,10 +37,11 @@ Sumorobot.prototype.connect = function() {
     self.connectionTimer = setInterval(function() {
         if (self.watchdogCounter == 0 && !self.terminate) {
             $("#battery img").attr("src", "assets/img/battery_disconnected.png");
+            self.disconnected = true;
         }
         // Reset watchdog counter
         self.watchdogCounter = 0;
-    }, 3000);
+    }, 1500);
     // When the WebSocket gets connected
     this.websocket.onopen = function(evt) {
         // Setup a timer to ping the robot
@@ -60,8 +65,11 @@ Sumorobot.prototype.connect = function() {
     this.websocket.onmessage = function(evt) {
         // When scope is received
         var data = evt.data.replace(/'/g, '"').toLowerCase();
+        self.disconnected = false;
+
         // Get SumoRobot battery voltage
         self.sensors = JSON.parse(data);
+        self.codeExecute = self.sensors.state;
         // When sensor data received
         if (self.sensors['battery_voltage']) {
             if (self.sensors['battery_voltage'] > 4.0) {
@@ -85,6 +93,7 @@ Sumorobot.prototype.connect = function() {
 Sumorobot.prototype.send = function(cmd, val) {
     if (cmd !== 'ping' && cmd !== 'stop') {
         this.moving = true;
+        this.codeExecute = true;
     } else {
         this.moving = false;
     }