Added a way to change PlayerList Header and Footer

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

@@ -55,6 +55,9 @@ public class ServerProperties {
 	private boolean resourcePackRequired;
 	private String resourcePackPrompt;
 	
+	private String tabHeader;
+	private String tabFooter;
+
 	Optional<BufferedImage> favicon;
 
 	public ServerProperties(File file) throws IOException {
@@ -133,6 +136,9 @@ public class ServerProperties {
 		resourcePackRequired = Boolean.parseBoolean(prop.getProperty("required-resource-pack"));
 		resourcePackPrompt = prop.getProperty("resource-pack-prompt");
 		
+		tabHeader = prop.getProperty("tab-header");
+		tabFooter = prop.getProperty("tab-footer");
+		
 		File png = new File("server-icon.png");
 		if (png.exists()) {
 			try {
@@ -268,5 +274,13 @@ public class ServerProperties {
 	public String getResourcePackPrompt() {
 		return resourcePackPrompt;
 	}
+	
+	public String getTabHeader() {
+		return tabHeader;
+	}
+	
+	public String getTabFooter() {
+		return tabFooter;
+	}
 
 }

src/main/java/com/loohp/limbo/player/Player.java

@@ -17,6 +17,7 @@ import com.loohp.limbo.server.ClientConnection;
 import com.loohp.limbo.server.packets.PacketPlayOutChat;
 import com.loohp.limbo.server.packets.PacketPlayOutGameState;
 import com.loohp.limbo.server.packets.PacketPlayOutHeldItemChange;
+import com.loohp.limbo.server.packets.PacketPlayOutPlayerListHeaderFooter;
 import com.loohp.limbo.server.packets.PacketPlayOutPositionAndLook;
 import com.loohp.limbo.server.packets.PacketPlayOutResourcePackSend;
 import com.loohp.limbo.server.packets.PacketPlayOutRespawn;
@@ -272,5 +273,38 @@ public class Player extends LivingEntity implements CommandSender {
 			e.printStackTrace();
 		}
 	}
+	
+	public void setPlayerListHeaderFooter(BaseComponent[] header, BaseComponent[] footer) {
+		try {
+			PacketPlayOutPlayerListHeaderFooter packsend = new PacketPlayOutPlayerListHeaderFooter(
+							ComponentSerializer.toString(header),
+							ComponentSerializer.toString(footer));
+			clientConnection.sendPacket(packsend);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+	
+	public void setPlayerListHeader(BaseComponent[] header) {
+		try {
+			PacketPlayOutPlayerListHeaderFooter packsend = new PacketPlayOutPlayerListHeaderFooter(
+							ComponentSerializer.toString(header),
+							null);
+			clientConnection.sendPacket(packsend);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+	
+	public void setPlayerListFooter(BaseComponent[] footer) {
+		try {
+			PacketPlayOutPlayerListHeaderFooter packsend = new PacketPlayOutPlayerListHeaderFooter(
+							null,
+							ComponentSerializer.toString(footer));
+			clientConnection.sendPacket(packsend);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
 
 }

src/main/java/com/loohp/limbo/server/ClientConnection.java

@@ -419,6 +419,8 @@ public class ClientConnection extends Thread {
 					sendPacket(state);
 				}
 				
+				// RESOURCEPACK CODE ADDED BY GAMERDUCK123
+				
 				if (properties.getResourcePackLink() != null && !properties.getResourcePackLink().equalsIgnoreCase("")) {
 					if (properties.getResourcePackSHA() != null && !properties.getResourcePackSHA().equalsIgnoreCase("")) {
 						//SEND RESOURCEPACK	
@@ -432,6 +434,20 @@ public class ClientConnection extends Thread {
 				} else {
 					//RESOURCEPACK NOT ENABLED
 				}
+
+				// PLAYER LIST HEADER AND FOOTER CODE ADDED BY GAMERDUCK123
+				// Sadly due to the limitations of minecraft (?) I cannot get the footer to work alone, it needs a header to have a footer, BUT
+				// You can have just a header with no footer (which is weird!)
+				String tabHeader = "";
+				String tabFooter = "";
+				if (properties.getTabHeader() != null && !properties.getTabHeader().equalsIgnoreCase("")) {
+					tabHeader = properties.getTabHeader();
+				} 
+				if (properties.getTabFooter() != null && !properties.getTabFooter().equalsIgnoreCase("")) {
+					tabFooter = properties.getTabFooter();
+				} 
+				player.setPlayerListHeaderFooter(ComponentSerializer.parse(tabHeader), 
+						ComponentSerializer.parse(tabFooter));
 				
 				ready = true;
 

src/main/java/com/loohp/limbo/server/packets/PacketPlayOutPlayerListHeaderFooter.java

@@ -0,0 +1,40 @@
+package com.loohp.limbo.server.packets;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import com.loohp.limbo.utils.DataTypeIO;
+
+public class PacketPlayOutPlayerListHeaderFooter extends PacketOut{
+	
+	private String header;
+	private String footer;
+	
+	public PacketPlayOutPlayerListHeaderFooter(String header, String footer) {
+		this.header = header;
+		this.footer = footer;
+	}
+
+	public String getHeader() {
+		return header;
+	}
+
+	public String getFooter() {
+		return footer;
+	}
+	
+	
+	@Override
+	public byte[] serializePacket() throws IOException {
+		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+		
+		DataOutputStream output = new DataOutputStream(buffer);
+		output.writeByte(Packet.getPlayOut().get(getClass()));
+		DataTypeIO.writeString(output, header, StandardCharsets.UTF_8);
+		DataTypeIO.writeString(output, footer, StandardCharsets.UTF_8);
+		return buffer.toByteArray();
+	}
+
+}

src/main/resources/mapping.json

@@ -43,7 +43,8 @@
     "PacketPlayOutEntityMetadata": "0x4D",
     "PacketPlayOutSpawnEntity": "0x00",
     "PacketPlayOutSpawnEntityLiving": "0x02",
-    "PacketPlayOutHeldItemChange": "0x48"
+    "PacketPlayOutHeldItemChange": "0x48",
+    "PacketPlayOutPlayerListHeaderFooter": "0x5E"
   },
   "StatusIn": {
     "0x01": "PacketStatusInPing",

src/main/resources/server.properties

@@ -57,4 +57,10 @@ handshake-verbose=true
 motd={"text":"","extra":[{"text":"Limbo Server!","color":"yellow"}]}
 
 #Server list version as string
-version=Limbo!
+version=Limbo!
+
+#Tab-List Header
+tab-header={"text":"","extra":[{"text":"Welcome to Limbo!","color":"green"}]}
+
+#Tab-List Footer
+tab-footer={"text":"","extra":[{"text":"Limbo Server by LOOHP","color":"yellow"}]}