feat: NetworkServer

Game/Game.csproj

@@ -21,6 +21,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Apos.Shapes" Version="0.2.3" />
+    <PackageReference Include="LiteNetLib" Version="1.2.0" />
     <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.1.303" />
     <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.1.303" />
   </ItemGroup>

Game/Network/NetworkClient.cs

@@ -0,0 +1,21 @@
+using LiteNetLib;
+
+namespace Game.Network;
+
+public class NetworkClient
+{
+    public readonly EventBasedNetListener Listener = null!;
+    public readonly NetManager Client = null!;
+
+    public NetworkClient()
+    {
+        Listener = new EventBasedNetListener();
+        Client = new NetManager(Listener);
+    }
+
+    public void Connect(string address, int port, string? password = null)
+        => Client.Connect(address, port, password ?? string.Empty);
+
+    public void PollEvents() => Client.PollEvents();
+    public void Stop() => Client.Stop();
+}

Game/Network/NetworkServer.cs

@@ -0,0 +1,39 @@
+using LiteNetLib;
+
+namespace Game.Network;
+
+public class NetworkServer
+{
+    public string Password { get; private set; } = string.Empty;
+    public int MaxConnectionCount { get; private set; } = 0;
+    public int Port { get; private set; } = 8888;
+
+    public readonly EventBasedNetListener Listener = null!;
+    public readonly NetManager Server = null!;
+
+    public NetworkServer()
+    {
+        Listener = new EventBasedNetListener();
+        Server = new NetManager(Listener);
+
+        Listener.ConnectionRequestEvent += request =>
+        {
+            if (Server.ConnectedPeersCount < MaxConnectionCount)
+                request.AcceptIfKey(Password);
+            else
+                request.Reject();
+        };
+    }
+
+    public void Start(int port, int maxConnectionCount, string? password = null)
+    {
+        Password = password ?? string.Empty;
+        MaxConnectionCount = maxConnectionCount;
+        Port = port;
+
+        Server.Start(port);
+    }
+
+    public void PollEvents() => Server.PollEvents();
+    public void Stop() => Server.Stop();
+}