Fixed PacketPlayInPluginMessaging & Added default command /version

pom.xml

@@ -24,7 +24,7 @@
 	<groupId>com.loohp</groupId>
 	<artifactId>Limbo</artifactId>
 	<name>Limbo</name>
-	<version>0.6.14-ALPHA</version>
+	<version>0.6.15-ALPHA</version>
 	
 	<description>Standalone Limbo Minecraft Server.</description>
 	<url>https://github.com/LOOHP/Limbo</url>

src/main/java/com/loohp/limbo/Limbo.java

@@ -86,6 +86,8 @@ import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 import net.querz.nbt.io.NBTUtil;
 import net.querz.nbt.tag.CompoundTag;
 
+import javax.swing.UnsupportedLookAndFeelException;
+
 public class Limbo {
 
 	public static final String LIMBO_BRAND = "Limbo";
@@ -110,10 +112,11 @@ public class Limbo {
 		}
 		if (!noGui) {
 			System.out.println("Launching Server GUI.. Add \"--nogui\" in launch arguments to disable");
-			Thread t1 = new Thread(new Runnable() {
+			Thread t1 = new Thread(() -> {
-			    @Override
+				try {
-			    public void run() {
 					GUI.main();
+				} catch (UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException e) {
+					e.printStackTrace();
 				}
 			});
 			t1.start();
@@ -128,9 +131,9 @@ public class Limbo {
 	
 	//===========================
 	
-	public final String serverImplementationVersion = "1.18.2";
+	public final String SERVER_IMPLEMENTATION_VERSION = "1.18.2";
-	public final int serverImplementationProtocol = 758;
+	public final int SERVER_IMPLEMENTATION_PROTOCOL = 758;
-	public final String limboImplementationVersion;
+	public final String LIMBO_IMPLEMENTATION_VERSION;
 	
 	private AtomicBoolean isRunning;
 	
@@ -176,8 +179,8 @@ public class Limbo {
 			console = new Console(System.in, System.out, System.err);
 		}
 				
-		limboImplementationVersion = getLimboVersion();
+		LIMBO_IMPLEMENTATION_VERSION = getLimboVersion();
-		console.sendMessage("Loading Limbo Version " + limboImplementationVersion + " on Minecraft " + serverImplementationVersion);
+		console.sendMessage("Loading Limbo Version " + LIMBO_IMPLEMENTATION_VERSION + " on Minecraft " + SERVER_IMPLEMENTATION_VERSION);
 		
 		String spName = "server.properties";
         File sp = new File(spName);

src/main/java/com/loohp/limbo/commands/DefaultCommands.java

@@ -39,6 +39,16 @@ public class DefaultCommands implements CommandExecutor, TabCompletor {
 		if (args.length == 0) {
 			return;
 		}
+
+		if (args[0].equalsIgnoreCase("version")) {
+			if (sender.hasPermission("limboserver.version")) {
+				sender.sendMessage(ChatColor.DARK_GRAY + "This server is running Limbo version " + Limbo.getInstance().LIMBO_IMPLEMENTATION_VERSION + " (MC: " + Limbo.getInstance().SERVER_IMPLEMENTATION_VERSION + ")");
+			} else {
+				sender.sendMessage(ChatColor.RED + "You do not have permission to use that command!");
+			}
+			return;
+		}
+
 		if (args[0].equalsIgnoreCase("spawn")) {
 			if (sender.hasPermission("limboserver.spawn")) {
 				if (args.length == 1 && sender instanceof Player) {
@@ -78,13 +88,11 @@ public class DefaultCommands implements CommandExecutor, TabCompletor {
 				if (args.length > 1) {
 					Player player = Limbo.getInstance().getPlayer(args[1]);
 					if (player != null) {
-						if (args.length >= 2) {
 						String reasonRaw = String.join(" ", Arrays.copyOfRange(args, 2, args.length));
 						if (reasonRaw.trim().length() > 0) {
 							reason = LegacyComponentSerializer.legacySection().deserialize(reasonRaw);
 							customReason = true;
 						}
-						}
 						player.disconnect(reason);
 						if (customReason) {
 							sender.sendMessage(ChatColor.RED + "Kicked the player " + player.getName() + " for the reason: " + LegacyComponentSerializer.legacySection().serialize(reason));

src/main/java/com/loohp/limbo/consolegui/GUI.java

@@ -39,6 +39,8 @@ import javax.swing.JPanel;
 import javax.swing.JScrollPane;
 import javax.swing.JTextField;
 import javax.swing.JTextPane;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.border.EmptyBorder;
 
 import com.loohp.limbo.Limbo;
@@ -67,7 +69,8 @@ public class GUI extends JFrame {
 	/**
 	 * Launch the application.
 	 */
-	public static void main() {
+	public static void main() throws UnsupportedLookAndFeelException, ClassNotFoundException, InstantiationException, IllegalAccessException {
+		UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
 		GUI frame = new GUI();
 		frame.setVisible(true);
 		

src/main/java/com/loohp/limbo/consolegui/SystemInfo.java

@@ -39,10 +39,10 @@ public class SystemInfo {
 				long allocatedMemory = runtime.totalMemory();
 				long freeMemory = runtime.freeMemory();
 
-				sb.append("Free Memory: " + format.format(freeMemory / 1024 / 1024) + " MB\n");
+				sb.append("Free Memory: ").append(format.format(freeMemory / 1024 / 1024)).append(" MB\n");
-				sb.append("Allocated Memory: " + format.format(allocatedMemory / 1024 / 1024) + " MB\n");
+				sb.append("Allocated Memory: ").append(format.format(allocatedMemory / 1024 / 1024)).append(" MB\n");
-				sb.append("Max Memory: " + format.format(maxMemory / 1024 / 1024) + " MB\n");
+				sb.append("Max Memory: ").append(format.format(maxMemory / 1024 / 1024)).append(" MB\n");
-				sb.append("Memory Usage: " + format.format((allocatedMemory - freeMemory) / 1024 / 1024) + "/" + format.format(maxMemory / 1024 / 1024) + " MB (" + Math.round((double) (allocatedMemory - freeMemory) / (double) (maxMemory) * 100) + "%)\n");
+				sb.append("Memory Usage: ").append(format.format((allocatedMemory - freeMemory) / 1024 / 1024)).append("/").append(format.format(maxMemory / 1024 / 1024)).append(" MB (").append(Math.round((double) (allocatedMemory - freeMemory) / (double) (maxMemory) * 100)).append("%)\n");
 				sb.append("\n");
 
 				try {
@@ -54,13 +54,16 @@ public class SystemInfo {
 					double systemLoad = operatingSystemMXBean.getSystemCpuLoad();				
 					int processors = runtime.availableProcessors();
 					
-					sb.append("Available Processors: " + processors + "\n");
+					sb.append("Available Processors: ").append(processors).append("\n");
-					sb.append("Process CPU Load: " + Math.round(processLoad * 100) + "%\n");
+					sb.append("Process CPU Load: ").append(Math.round(processLoad * 100)).append("%\n");
-					sb.append("System CPU Load: " + Math.round(systemLoad * 100) + "%\n");
+					sb.append("System CPU Load: ").append(Math.round(systemLoad * 100)).append("%\n");
 					GUI.sysText.setText(sb.toString());
 				} catch (Exception ignore) {}
 				
-				try {TimeUnit.MILLISECONDS.sleep(1000);} catch (InterruptedException e) {}
+				try {
+					TimeUnit.MILLISECONDS.sleep(1000);
+				} catch (InterruptedException ignored) {
+				}
 			}
 		}
 	}

src/main/java/com/loohp/limbo/events/player/PlayerResourcePackStatusEvent.java

@@ -24,16 +24,11 @@ import com.loohp.limbo.player.Player;
 
 public class PlayerResourcePackStatusEvent extends PlayerEvent {
 
-	private Player player;
 	private EnumResourcePackStatus status;
 	
 	public PlayerResourcePackStatusEvent(Player player, EnumResourcePackStatus status) {
 		super(player);
-	}
+		this.status = status;
-	
-	@Override
-	public Player getPlayer() {
-		return player;
 	}
 	
 	public EnumResourcePackStatus getStatus() {

src/main/java/com/loohp/limbo/events/player/PluginMessageEvent.java

@@ -20,7 +20,6 @@
 package com.loohp.limbo.events.player;
 
 import com.loohp.limbo.player.Player;
-import com.loohp.limbo.utils.NamespacedKey;
 
 import java.util.Arrays;
 

src/main/java/com/loohp/limbo/file/ServerProperties.java

@@ -104,7 +104,7 @@ public class ServerProperties {
 		prop.store(pw, COMMENT);
 		pw.close();
 
-		protocol = Limbo.getInstance().serverImplementationProtocol;
+		protocol = Limbo.getInstance().SERVER_IMPLEMENTATION_PROTOCOL;
 
 		maxPlayers = Integer.parseInt(prop.getProperty("max-players"));
 		serverPort = Integer.parseInt(prop.getProperty("server-port"));
@@ -186,7 +186,7 @@ public class ServerProperties {
 	}
 	
 	public String getServerImplementationVersion() {
-		return Limbo.getInstance().serverImplementationVersion;
+		return Limbo.getInstance().SERVER_IMPLEMENTATION_VERSION;
 	}
 
 	public String getServerModName() {

src/main/java/com/loohp/limbo/metrics/Metrics.java

@@ -111,7 +111,7 @@ public class Metrics {
             }
         }
         
-        limboVersion = Limbo.getInstance().limboImplementationVersion;
+        limboVersion = Limbo.getInstance().LIMBO_IMPLEMENTATION_VERSION;
 
         // Load the data
         serverUUID = config.get("serverUuid", String.class);
@@ -137,7 +137,7 @@ public class Metrics {
 		addCustomChart(new Metrics.SimplePie("minecraftVersion", new Callable<String>() {
 	        @Override
 	        public String call() throws Exception {
-	            return Limbo.getInstance().serverImplementationVersion;
+	            return Limbo.getInstance().SERVER_IMPLEMENTATION_VERSION;
 	        }
 	    }));
     }

src/main/java/com/loohp/limbo/network/protocol/packets/PacketPlayInPluginMessaging.java

@@ -36,10 +36,10 @@ public class PacketPlayInPluginMessaging extends PacketIn {
 	}
 	
 	public PacketPlayInPluginMessaging(DataInputStream in, int packetLength, int packetId) throws IOException {
-		String channel = DataTypeIO.readString(in, StandardCharsets.UTF_8);
+		this.channel = DataTypeIO.readString(in, StandardCharsets.UTF_8);
 		int dataLength = packetLength - DataTypeIO.getVarIntLength(packetId) - DataTypeIO.getStringLength(channel, StandardCharsets.UTF_8);
-		data = new byte[dataLength];
+		this.data = new byte[dataLength];
-		in.readFully(data);
+		in.readFully(this.data);
 	}
 
 	public String getChannel() {

src/main/resources/permission.yml

@@ -7,6 +7,7 @@ groups:
   default:
     - limboserver.spawn
     - limboserver.chat
+    - limboserver.version
 
 players:
   LOOHP: