Made the UI work and did some fixing

scripts/Client.cs

@@ -7,6 +7,7 @@ public class Client : Peer {
     private Connection ServerConn;
 
     private byte[] TempBuffer = {1};
+    private float Timer = 0;
 
     public Client(PacketPeerUDP packetPeer) : base(packetPeer) {
         PacketPeer = packetPeer;
@@ -16,7 +17,7 @@ public class Client : Peer {
         GD.print("Start client.");
         GD.print("Starting to send stuff to " + address + ":" + port);
         ServerConn = new Connection(address, port);
-        StartListening(port, address);
+        StartListening(port, "*");
     }
 
     public override void ReceivePacket(byte[] buffer, string address, int port) {
@@ -24,6 +25,9 @@ public class Client : Peer {
     }
 
     public override void Update(float delta) {
+        Timer += delta;
+        if (Timer < 1) { return; }
+        Timer = 0;
         GD.print("Update client.");
         SendBuffer(TempBuffer, ServerConn);
     }

scripts/MainMenu.cs

@@ -5,18 +5,52 @@ public class MainMenu : Panel {
 
     private Net Net;
 
+    private LineEdit IPAddressEdit;
+    private LineEdit PortEdit;
+
     public override void _Ready() {
         Net = (Net) GetNode("/root/Net");
+        var IPAddressNode = GetNode("IPAddress");
+        var PortNode = GetNode("Port");
+        if (IPAddressNode is LineEdit) {
+            IPAddressEdit = (LineEdit) IPAddressNode;
+        }
+        if (PortNode is LineEdit) {
+            PortEdit = (LineEdit) PortNode;
+        }
     }
 
     private void OnLaunchServer() {
         GD.print("Launch Server!");
-        Net.StartServer();
+        string address;
+        int port;
+        SetAddressAndPort(out address, out port, "*", 7070);
+        Net.StartServer(address, port);
     }
 
 
     private void OnLaunchClient() {
         GD.print("Launch Client!");
-        Net.StartClient();
+        string address;
+        int port;
+        SetAddressAndPort(out address, out port, "localhost", 7070);
+        Net.StartClient(address, port);
+    }
+
+    private void SetAddressAndPort(out string address, out int port, string defaultAddress, int defaultPort) {
+        if (IPAddressEdit == null || IPAddressEdit.GetText() == "") {
+            address = defaultAddress;
+        } else {
+            address = IPAddressEdit.GetText();
+        }
+        port = defaultPort;
+        if (PortEdit != null && PortEdit.GetText() != "") {
+            //port =  PortEdit.GetText();
+            int temp_port;
+            Int32.TryParse(PortEdit.GetText(), out temp_port);
+            if (temp_port > 80) {
+                port = temp_port;
+            }
+        }
     }
 }

scripts/Net.cs

@@ -7,21 +7,11 @@ public class Net : Node {
     private Client Client;
     private Server Server;
 
-    private LineEdit IPAddressEdit;
-    private LineEdit PortEdit;
-
     public bool IsClient { get { return Client != null; } }
     public bool IsServer { get { return Server != null; } }
 
     public override void _Ready() {
         PacketPeer = new PacketPeerUDP();
-        var IPAddressNode = GetNode("IPAddress");
-        var PortNode = GetNode("Port");
-        if (IPAddressNode is LineEdit) {
-            IPAddressEdit = (LineEdit) IPAddressNode;
-        } if (PortNode is LineEdit) {
-            PortEdit = (LineEdit) PortNode;
-        }
     }
 
     public override void _Process(float delta) {
@@ -34,34 +24,15 @@ public class Net : Node {
         if (IsClient) { Client.Free(); }
     }
 
-    public void StartClient() {
+    public void StartClient(string address, int port) {
         if (IsClient || IsServer) { return; }
         Client = new Client(PacketPeer);
-        string address;
-        int port;
-        SetAddressAndPort(out address, out port, "localhost", 7070);
         Client.Initialize(address, port);
     }
 
-    public void StartServer() {
+    public void StartServer(string address, int port) {
         if (IsClient || IsServer) { return; }
         Server = new Server(PacketPeer);
-        string address;
-        int port;
-        SetAddressAndPort(out address, out port, "*", 7070);
         Server.Initialize(address, port);
     }
-
-    private void SetAddressAndPort(out string address, out int port, string defaultAddress, int defaultPort) {
-        if (IPAddressEdit == null || IPAddressEdit.GetText() == "") {
-            address = defaultAddress;
-        } else {
-            address = IPAddressEdit.GetText();
-        }
-        port = defaultPort;
-        if (PortEdit != null && PortEdit.GetText() != "") {
-            //port =  PortEdit.GetText();
-            Int32.TryParse(PortEdit.GetText(), out port);
-        }
-    }
 }