Fix unable to exit in beryl console. Fix deleting old version.txt

r4979
2019-08-27

## DISCUSSION
1. #208
2. #216

## NEW
1. Add "0. Exit" in the beryl console for exiting mars-sim.

## CHANGE
1. Modify selectMode() in InteractiveTerm to enable exiting
   mars-sim.
2. Modify the constructor in SimulationConfigEditor to enable
   exiting mars-sim.

## FIX
1. Correct not being able to delete old version.txt in loadConfig.
   - Call versionFile.delete() prior to deleting the xml folder.
2. Fix unable to exit in beryl console.
2. Fix the ability to exit mars-sim by clicking the top right
   corner "X" button in SimulationConfigEditor.

Author: mokun

mars-sim-core/src/main/java/org/mars_sim/msp/core/SimulationConfig.java

@@ -274,14 +274,16 @@ public static void loadConfig() {
 		// if the "xml" directory exists, back up everything inside and clean the directory
 		if (existed && xmlLocation.isDirectory()) {
 			LogConsolidated.log(Level.CONFIG, 0, sourceName, 
-			"'xml' folder already existed. Backing it up into 'backup' folder & Creating a new 'xml' folder with new xml files.");		
+			"'xml' folder already existed.");		
 
 			if (versionFile.exists()) {
 				BufferedReader brTest;
 				try {
 					brTest = new BufferedReader(new FileReader(versionFile));
 				    String buildText = brTest.readLine();
 				    if (buildText.equals(Simulation.BUILD)) {
+						LogConsolidated.log(Level.CONFIG, 0, sourceName, 
+								"The version.txt shows the existing xml file set already has the most current BUILD tag.");		
 				    	sameBuild = true;
 				    }		    
 				} catch (FileNotFoundException e) {
@@ -301,7 +303,16 @@ public static void loadConfig() {
 	//			may use FileUtils.checksum(file, checksum)
 
 				try {
+					LogConsolidated.log(Level.CONFIG, 0, sourceName, 
+							"Backing up the existing xml files into the 'backup' folder. Deleting the xml folder.");	
+					
+					// copy everything in the xml folder
 					FileUtils.copyDirectoryToDirectory(xmlLocation, backupLocation);
+					
+					// delete the version.txt file 
+					versionFile.delete();
+
+					// delete everything in the xml folder
 					FileUtils.deleteDirectory(xmlLocation);
 
 				} catch (IOException e) {
@@ -314,21 +325,21 @@ public static void loadConfig() {
 		existed = xmlLocation.exists();
 
 		if (!sameBuild) {
+
 			// the "xml" folder does NOT exist
-			
-			// Create the xml folder
-			System.out.println("Can it write ? " + xmlLocation.canWrite());
-			LogConsolidated.log(Level.CONFIG, 0, sourceName, 
-					"'xml' folder does not exist. Creating it.");
-	//				System.out.println("path is " + Files.createDirectories(path));
-			if (!versionFile.getParentFile().exists()) {
+			if (!xmlLocation.exists()) {
+				LogConsolidated.log(Level.CONFIG, 0, sourceName, 
+						"'xml' folder does not exist. Creating it.");
+				// Create the xml folder
 				versionFile.getParentFile().mkdirs();
-				List<String> lines = Arrays.asList(Simulation.BUILD);
-				try {
-					Files.write(versionPath, lines, StandardCharsets.UTF_8);
-				} catch (IOException e) {
-					e.printStackTrace();
-				}
+			}
+			
+			List<String> lines = Arrays.asList(Simulation.BUILD);
+			try {
+				// Create the version.txt file
+				Files.write(versionPath, lines, StandardCharsets.UTF_8);
+			} catch (IOException e) {
+				e.printStackTrace();
 			}
 		}
 

mars-sim-core/src/main/java/org/mars_sim/msp/core/terminal/InteractiveTerm.java

@@ -102,17 +102,28 @@ public void startModeSelection() {
 
 
 	public void selectMode() {
-		terminal.print("1. Command Mode "
+		terminal.print(
+				"0. Exit "
+				+ System.lineSeparator()
+				+ "1. Command Mode "
 				+ System.lineSeparator()
 				+ "2. Sandbox Mode "
 				+ System.lineSeparator()
 				+ System.lineSeparator()
 				);
 
-        handler.addStringTask("input", "Select the Game Mode:", false).addChoices("1", "2").constrainInputToChoices();
+        handler.addStringTask("input", "Select the Game Mode:", false).addChoices("0", "1", "2").constrainInputToChoices();
         handler.executeOneTask();
 
-		if (GameManager.input.equals("1")) {
+        if (GameManager.input.equals("0")) {
+            Simulation sim = Simulation.instance();
+        	sim.endSimulation(); 
+    		sim.getSimExecutor().shutdownNow();
+    		sim.getMasterClock().exitProgram();
+    		logger.info("Exiting the Simulation.");
+			System.exit(0);
+        }
+        else if (GameManager.input.equals("1")) {
 
 			// Set the Game Mode to Command Mode in GameManager
 			GameManager.mode = GameMode.COMMAND;

mars-sim-core/src/main/resources/messages.properties

@@ -854,7 +854,7 @@ Simulation.log.saveError                                = Error in saving the si
 Simulation.log.saveSimTo                                = Saving simulation to
 Simulation.thread.masterClock                           = Master Clock
 Simulation.version										= 3.1.0-b2
-Simulation.build										= 4978
+Simulation.build										= 4979
 
 SimulationConfigEditor.button.add                       = Add
 SimulationConfigEditor.button.crewEditor                = Edit Crew

mars-sim-ui/src/main/java/org/mars_sim/msp/ui/swing/configeditor/SimulationConfigEditor.java

@@ -125,6 +125,14 @@ public SimulationConfigEditor(SimulationConfig config, MainWindow mainWindow) {
 
 		f = new JFrame();
 
+		f.addWindowListener(new WindowAdapter() {
+			@Override
+			public void windowClosing(WindowEvent event) {
+				System.exit(0);
+				destroy();
+			}
+		});
+		
 		f.setSize(HORIZONTAL_SIZE, 360);
 		f.setTitle(Msg.getString("SimulationConfigEditor.title")); //$NON-NLS-1$