stopped sim and gui threads on exit

src/tec/letsgoing/ardublock/simulator/Simulator.java

@@ -6,6 +6,8 @@ package tec.letsgoing.ardublock.simulator;
 import java.awt.Point;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
 import java.util.Vector;
 
 import javax.swing.UIManager;
@@ -104,6 +106,15 @@ public class Simulator implements Runnable, ActionListener{
 		guiThread = new Thread(gui);
 		guiThread.start();
 		
+		//override close operation
+		//TODO: TEST
+		gui.addWindowListener(new WindowAdapter() {
+			public void windowClosing(WindowEvent we) {
+				instance.stopSimu();
+				gui.stopThread();
+			}			  
+		});
+
 		return true;
 	}
 

src/tec/letsgoing/ardublock/simulator/view/GUI.java

@@ -433,11 +433,7 @@ public class GUI extends JFrame implements Runnable, ActionListener {
 
 				// e.printStackTrace();
 			}
-			
-			
 			super.repaint();
-			
-				
 		}
 	}