Basic server hosting done

core/assets/bundles/bundle.properties

@@ -11,6 +11,10 @@ text.level.mode=Gamemode:
 text.savegame=Save Game
 text.loadgame=Load Game
 text.quit=Quit
+text.hostserver=Host Server
+text.server.port=Port:
+text.server.invalidport=Invalid port number!
+text.server.error=[crimson]Error hosting server: [orange]{0}
 text.tutorial.back=< Prev
 text.tutorial.next=Next >
 text.save.new=New Save

core/src/io/anuke/mindustry/Mindustry.java

@@ -41,6 +41,7 @@ public class Mindustry extends ModuleCore {
 		module(Vars.control = new Control());
 		module(Vars.renderer = new Renderer());
 		module(Vars.ui = new UI());
+		module(Vars.network = new Network());
 	}
 
 	public void loadBundle(){

core/src/io/anuke/mindustry/Vars.java

@@ -73,10 +73,14 @@ public class Vars{
 	
 	public static final int tilesize = 8;
 
+	//server port
+	public static final int port = 6567;
+	
 	public static Control control;
 	public static Renderer renderer;
 	public static UI ui;
 	public static World world;
+	public static Network network;
 	
 	public static Player player;
 	

core/src/io/anuke/mindustry/core/Network.java

@@ -1,7 +1,36 @@
 package io.anuke.mindustry.core;
 
+import io.anuke.mindustry.Vars;
+import io.anuke.mindustry.core.GameState.State;
+import io.anuke.mindustry.net.Net;
 import io.anuke.ucore.modules.Module;
 
+import java.io.IOException;
+
 public class Network extends Module{
-	//TODO implementation
+    private boolean isHosting;
+
+    public Network(){
+
+    }
+
+    public void update(){
+        if(isHosting && GameState.is(State.menu)){
+            Net.closeServer();
+            isHosting = false;
+        }
+    }
+
+    public void hostServer(int port) throws IOException{
+        if(isHosting){
+            throw new IOException("Already hosting a server!");
+        }
+
+        Net.host(port);
+        isHosting = true;
+    }
+
+    public boolean isHosting(){
+        return isHosting;
+    }
 }

core/src/io/anuke/mindustry/core/UI.java

@@ -42,6 +42,7 @@ import io.anuke.ucore.scene.builders.label;
 import io.anuke.ucore.scene.builders.table;
 import io.anuke.ucore.scene.event.Touchable;
 import io.anuke.ucore.scene.ui.*;
+import io.anuke.ucore.scene.ui.TextField.TextFieldFilter;
 import io.anuke.ucore.scene.ui.Window.WindowStyle;
 import io.anuke.ucore.scene.ui.layout.Table;
 import io.anuke.ucore.scene.ui.layout.Unit;
@@ -371,12 +372,12 @@ public class UI extends SceneModule{
 		configtable.setVisible(false);
 	}
 
-	public void showTextInput(String title, String text, String def, Consumer<String> confirmed){
+	public void showTextInput(String title, String text, String def, TextFieldFilter filter, Consumer<String> confirmed){
 		new Dialog(title, "dialog"){{
 			content().margin(30);
 			content().add(text).padRight(6f);
 			TextField field = content().addField(def, t->{}).size(170f, 50f).get();
-			field.setTextFieldFilter((f, c) -> field.getText().length() < 12);
+			field.setTextFieldFilter((f, c) -> field.getText().length() < 12 && filter.acceptChar(f, c));
 			Mindustry.platforms.addDialog(field);
 			buttons().defaults().size(120, 54).pad(4);
 			buttons().addButton("$text.ok", () -> {
@@ -387,6 +388,10 @@ public class UI extends SceneModule{
 		}}.show();
 	}
 
+	public void showTextInput(String title, String text, String def, Consumer<String> confirmed){
+		showTextInput(title, text, def, (field, c) -> true, confirmed);
+	}
+
 	public void showError(String text){
 		new Dialog("$text.error.title", "dialog"){{
 			content().margin(15);

core/src/io/anuke/mindustry/net/Net.java

@@ -23,9 +23,18 @@ public class Net{
 
 	/**Host a server at an address*/
 	public static void host(int port) throws IOException{
+		active = true;
+		server = true;
 		serverProvider.host(port);
 	}
 
+	/**Closes the server.*/
+	public static void closeServer(){
+        serverProvider.close();
+        server = false;
+        active = false;
+    }
+	
 	/**Send an object to all connected clients, or to the server if this is a client.*/
 	public static void send(Object object, SendMode mode){
 		if(server){
@@ -113,6 +122,8 @@ public class Net{
 		public void sendTo(int id, Object object, SendMode mode);
 		/**Send an object to everyone <i>except</i> a client ID.*/
 		public void sendExcept(int id, Object object, SendMode mode);
+		/**Close the server connection.*/
+		public void close();
 		/**Register classes to be sent.*/
 		public void register(Class<?>... types);
 	}

core/src/io/anuke/mindustry/net/Packets.java

@@ -0,0 +1,16 @@
+package io.anuke.mindustry.net;
+
+/**Class for storing all packets.*/
+public class Packets {
+
+    public static class Connect {
+        public int id;
+        public String addressTCP;
+    }
+
+    public static class Disconnect {
+        public int id;
+        public String addressTCP;
+    }
+
+}

core/src/io/anuke/mindustry/net/packets/Connect.java

@@ -1,6 +0,0 @@
-package io.anuke.mindustry.net.packets;
-
-public class Connect {
-    public int id;
-    public String addressTCP;
-}

core/src/io/anuke/mindustry/net/packets/Disconnect.java

@@ -1,6 +0,0 @@
-package io.anuke.mindustry.net.packets;
-
-public class Disconnect {
-    public int id;
-    public String addressTCP;
-}

core/src/io/anuke/mindustry/net/packets/Packets.java

@@ -1,4 +0,0 @@
-package io.anuke.mindustry.net.packets;
-
-public class Packets {
-}

core/src/io/anuke/mindustry/ui/MenuDialog.java

@@ -10,7 +10,12 @@ import io.anuke.ucore.scene.builders.build;
 import io.anuke.ucore.scene.builders.imagebutton;
 import io.anuke.ucore.scene.ui.ConfirmDialog;
 import io.anuke.ucore.scene.ui.ImageButton;
+import io.anuke.ucore.scene.ui.TextField.TextFieldFilter.DigitsOnlyFilter;
 import io.anuke.ucore.scene.ui.layout.Cell;
+import io.anuke.ucore.util.Bundles;
+import io.anuke.ucore.util.Strings;
+
+import java.io.IOException;
 
 public class MenuDialog extends FloatingDialog{
 	private SaveDialog save = new SaveDialog();
@@ -55,6 +60,24 @@ public class MenuDialog extends FloatingDialog{
 			}
 
 			content().row();
+
+			content().addButton("$text.hostserver", () -> {
+				Vars.ui.showTextInput("$text.hostserver", "$text.server.port", Vars.port + "", new DigitsOnlyFilter(), text -> {
+					int result = Strings.parseInt(text);
+					if(result == Integer.MIN_VALUE || result >= 65535){
+						Vars.ui.showError("$text.server.invalidport");
+					}else{
+						try{
+							Vars.network.hostServer(result);
+						}catch (IOException e){
+							Vars.ui.showError(Bundles.format("text.server.error", Strings.parseException(e, false)));
+						}
+					}
+				});
+			}).disabled(b -> Vars.network.isHosting());
+
+            content().row();
+
 			content().addButton("$text.quit", () -> {
 				new ConfirmDialog("$text.confirm", "$text.quit.confirm", () -> {
 					hide();

desktop/src/io/anuke/mindustry/desktop/DesktopLauncher.java

@@ -23,8 +23,8 @@ import io.anuke.mindustry.net.Net.SendMode;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.io.PlatformFunction;
 import io.anuke.mindustry.net.Net.ServerProvider;
-import io.anuke.mindustry.net.packets.Connect;
+import io.anuke.mindustry.net.Packets.Connect;
-import io.anuke.mindustry.net.packets.Disconnect;
+import io.anuke.mindustry.net.Packets.Disconnect;
 import io.anuke.ucore.scene.ui.TextField;
 
 public class DesktopLauncher {
@@ -133,7 +133,9 @@ public class DesktopLauncher {
 
 			{
 				server = new Server();
-				server.start();
+				Thread thread = new Thread(server, "Kryonet Server");
+				thread.setDaemon(true);
+				thread.start();
 				server.addListener(new Listener(){
 					@Override
 					public void connected (Connection connection) {
@@ -163,6 +165,11 @@ public class DesktopLauncher {
 				server.bind(port, port);
 			}
 
+			@Override
+			public void close() {
+				server.close();
+			}
+
 			@Override
 			public void send(Object object, SendMode mode) {
 				if(mode == SendMode.tcp){