feat: Test Network

Engine

@@ -1 +1 @@
-Subproject commit 5d897f2f56c711629f8cbf915d0ed112cf21680f
+Subproject commit dbb263ebed24a1658d5d18d27182c8749cc8ee06

Game/Behaviours/BallBehaviour.cs

@@ -1,5 +1,6 @@
 using System;
-
+using LiteNetLib;
+using Pong.Network;
 using Syntriax.Engine.Core;
 using Syntriax.Engine.Physics2D;
 using Syntriax.Engine.Physics2D.Abstract;
@@ -14,6 +15,7 @@ public class BallBehaviour : BehaviourOverride
 
     private readonly Random random = new();
     private IRigidBody2D rigidBody = null!;
+    private INetworkCommunicator communicator = null!;
 
     protected override void OnFirstActiveFrame()
     {
@@ -21,11 +23,14 @@ public class BallBehaviour : BehaviourOverride
             throw new Exception($"{nameof(IRigidBody2D)} is missing on {GameObject.Name}.");
         if (!BehaviourController.TryGetBehaviour(out ICollider2D? foundCollider))
             throw new Exception($"{nameof(ICollider2D)} is missing on {GameObject.Name}.");
+        if (!GameObject.GameManager.TryFindBehaviour(out INetworkCommunicator? foundCommunicator))
+            throw new Exception($"{nameof(INetworkCommunicator)} is missing on GameManager.");
 
         foundCollider.OnCollisionDetected += OnCollisionDetected;
 
         rigidBody = foundRigidBody;
-
+        communicator = foundCommunicator;
+        communicator.RegisterEntityListener(this, OnDataReceived);
         if (GameObject.GameManager.TryFindBehaviour(out PongManagerBehaviour? pongManager))
         {
             pongManager.OnReset += ResetBall;
@@ -34,6 +39,12 @@ public class BallBehaviour : BehaviourOverride
         }
     }
 
+    private void OnDataReceived(NetPacketReader reader)
+    {
+        rigidBody.Transform.Position = reader.GetVector2D();
+        rigidBody.Velocity = reader.GetVector2D();
+    }
+
     private void DisableBall(PongManagerBehaviour pongManager)
     {
         BehaviourController.GameObject.Transform.Position = Vector2D.Zero;
@@ -45,6 +56,8 @@ public class BallBehaviour : BehaviourOverride
         StateEnable.Enabled = true;
         BehaviourController.GameObject.Transform.Position = Vector2D.Zero;
         rigidBody.Velocity = GetRandomDirection() * Speed;
+
+        SendBallData();
     }
 
     private Vector2D GetRandomDirection()
@@ -70,6 +83,19 @@ public class BallBehaviour : BehaviourOverride
             rigidBody.Velocity = information.Left.Transform.Position.FromTo(information.Right.Transform.Position).Normalized * rigidBody.Velocity.Magnitude;
         else
             rigidBody.Velocity = rigidBody.Velocity.Reflect(information.Normal);
+
+        SendBallData();
+    }
+
+    private void SendBallData()
+    {
+        if (communicator is not INetworkServer server)
+            return;
+
+        LiteNetLib.Utils.NetDataWriter dataWriter = communicator.GetEntityWriter(this);
+        dataWriter.Put(rigidBody.Transform.Position);
+        dataWriter.Put(rigidBody.Velocity);
+        server.Manager.SendToAll(dataWriter, LiteNetLib.DeliveryMethod.ReliableOrdered);
     }
 
     public BallBehaviour() { }

Game/Behaviours/PaddleBehaviour.cs

@@ -2,6 +2,11 @@ using System;
 
 using Microsoft.Xna.Framework.Input;
 
+using LiteNetLib;
+using LiteNetLib.Utils;
+
+using Pong.Network;
+
 using Syntriax.Engine.Core;
 using Syntriax.Engine.Input;
 
@@ -19,6 +24,7 @@ public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Sp
     private bool isDownPressed = false;
 
     private IButtonInputs<Keys> inputs = null!;
+    private INetworkCommunicator communicator = null!;
 
     protected override void OnUpdate()
     {
@@ -26,23 +32,43 @@ public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Sp
             return;
 
         if (isUpPressed)
-            GameObject.Transform.Position = GameObject.Transform.Position + Vector2D.Up * (float)Time.Elapsed.TotalSeconds * Speed;
+            MovePaddle(Vector2D.Up * (float)Time.Elapsed.TotalSeconds * Speed);
         else if (isDownPressed)
-            GameObject.Transform.Position = GameObject.Transform.Position + -Vector2D.Up * (float)Time.Elapsed.TotalSeconds * Speed;
+            MovePaddle(-Vector2D.Up * (float)Time.Elapsed.TotalSeconds * Speed);
 
         GameObject.Transform.Position = new Vector2D(GameObject.Transform.Position.X, MathF.Max(MathF.Min(GameObject.Transform.Position.Y, High), Low));
     }
 
+    private void MovePaddle(Vector2D vectorToAdd)
+    {
+        GameObject.Transform.Position += vectorToAdd;
+
+        NetDataWriter dataWriter = communicator.GetEntityWriter(this);
+        dataWriter.Put(Transform.Position);
+        communicator.Manager.SendToAll(dataWriter, LiteNetLib.DeliveryMethod.Unreliable);
+    }
+
     protected override void OnFirstActiveFrame()
     {
         if (!BehaviourController.TryGetBehaviour<IButtonInputs<Keys>>(out var behaviourResult))
             inputs = behaviourResult ?? BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
 
+        if (!GameObject.GameManager.TryFindBehaviour(out INetworkCommunicator? foundCommunicator))
+            throw new Exception($"{nameof(INetworkCommunicator)} is missing on GameManager.");
+
         inputs.RegisterOnPress(Up, OnUpPressed);
         inputs.RegisterOnRelease(Up, OnUpReleased);
 
         inputs.RegisterOnPress(Down, OnDownPressed);
         inputs.RegisterOnRelease(Down, OnDownReleased);
+
+        communicator = foundCommunicator;
+        communicator.RegisterEntityListener(this, OnDataReceived);
+    }
+
+    private void OnDataReceived(NetPacketReader reader)
+    {
+        Transform.Position = reader.GetVector2D();
     }
 
     protected override void OnFinalize()

Game/Behaviours/PongManagerBehaviour.cs

@@ -2,6 +2,10 @@ using System;
 
 using Microsoft.Xna.Framework.Input;
 
+using LiteNetLib;
+
+using Pong.Network;
+
 using Syntriax.Engine.Core;
 
 namespace Pong.Behaviours;
@@ -12,6 +16,8 @@ public class PongManagerBehaviour : BehaviourOverride
     public Action<PongManagerBehaviour>? OnFinished { get; set; } = null;
     public Action<PongManagerBehaviour>? OnScored { get; set; } = null;
 
+    private INetworkCommunicator communicator = null!;
+
     public int ScoreLeft { get; private set; } = 0;
     public int ScoreRight { get; private set; } = 0;
     public int ScoreSum => ScoreLeft + ScoreRight;
@@ -28,15 +34,31 @@ public class PongManagerBehaviour : BehaviourOverride
         if (!BehaviourController.TryGetBehaviour(out buttonInputs))
             buttonInputs = BehaviourController.AddBehaviour<KeyboardInputsBehaviour>();
 
+        if (!GameObject.GameManager.TryFindBehaviour(out INetworkCommunicator? foundCommunicator))
+            throw new Exception($"{nameof(INetworkCommunicator)} is missing on GameManager.");
+
         buttonInputs.RegisterOnRelease(Keys.Space, (_, _1) => Reset());
+
+        communicator = foundCommunicator;
+        communicator.RegisterEntityListener(this, OnMessageReceived);
     }
 
+    private void OnMessageReceived(NetPacketReader reader)
+    {
+        ScoreLeft = reader.GetInt();
+        ScoreRight = reader.GetInt();
+        OnScored?.Invoke(this);
+
+        CheckFinish();
+    }
 
     public void ScoreToLeft()
     {
         ScoreLeft++;
         OnScored?.Invoke(this);
 
+        SendData();
+
         CheckFinish();
     }
 
@@ -45,6 +67,8 @@ public class PongManagerBehaviour : BehaviourOverride
         ScoreRight++;
         OnScored?.Invoke(this);
 
+        SendData();
+
         CheckFinish();
     }
 
@@ -52,6 +76,8 @@ public class PongManagerBehaviour : BehaviourOverride
     {
         ScoreLeft = ScoreRight = 0;
         OnReset?.Invoke(this);
+
+        SendData();
     }
 
     private void CheckFinish()
@@ -61,4 +87,15 @@ public class PongManagerBehaviour : BehaviourOverride
         if (ScoreLeft > halfwayScore || ScoreRight > halfwayScore)
             OnFinished?.Invoke(this);
     }
+
+    private void SendData()
+    {
+        if (communicator is not INetworkServer server)
+            return;
+
+        LiteNetLib.Utils.NetDataWriter dataWriter = communicator.GetEntityWriter(this);
+        dataWriter.Put(ScoreLeft);
+        dataWriter.Put(ScoreRight);
+        server.Manager.SendToAll(dataWriter, LiteNetLib.DeliveryMethod.ReliableOrdered);
+    }
 }

Game/Behaviours/TextScoreBehaviour.cs

@@ -14,6 +14,7 @@ public class TextScoreBehaviour : TextBehaviour
         if (!GameObject.GameManager.TryFindBehaviour(out pongManager))
             return;
 
+        pongManager.OnFinished += UpdateScores;
         pongManager.OnScored += UpdateScores;
         pongManager.OnReset += UpdateScores;
 

Game/GamePong.cs

@@ -1,16 +1,19 @@
 using System;
+
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
 using Microsoft.Xna.Framework.Input;
 
-using Pong.Behaviours;
 using Apos.Shapes;
 
+using Pong.Behaviours;
+using Pong.Network;
+
 using Syntriax.Engine.Core;
 using Syntriax.Engine.Core.Abstract;
 using Syntriax.Engine.Physics2D;
-using Syntriax.Engine.Physics2D.Primitives;
 using Syntriax.Engine.Physics2D.Abstract;
+using Syntriax.Engine.Physics2D.Primitives;
 
 namespace Pong;
 
@@ -79,7 +82,7 @@ public class GamePong : Game
         gameObjectBall.Transform.SetTransform(position: new Vector2D(0, 0f), scale: new Vector2D(10f, 10f));
 
         gameObjectBall.BehaviourController.AddBehaviour<CircleBehaviour>(new Circle(Vector2D.Zero, 1f));
-        gameObjectBall.BehaviourController.AddBehaviour<BallBehaviour>();
+        gameObjectBall.BehaviourController.AddBehaviour<BallBehaviour>().Id = "ball";
         gameObjectBall.BehaviourController.AddBehaviour<RigidBody2D>();
 
         ////////////////////////////////////////////////////////////////////////////////////
@@ -87,13 +90,13 @@ public class GamePong : Game
         IGameObject gameObjectLeftPaddle = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Left Paddle");
         gameObjectLeftPaddle.Transform.SetTransform(position: new Vector2D(-468f, 0f), scale: new Vector2D(15f, 60f));
 
-        gameObjectLeftPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.W, Keys.S, 228f, -228f, 400f);
+        gameObjectLeftPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.W, Keys.S, 228f, -228f, 400f).Id = "leftPaddle"; ;
         gameObjectLeftPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
         gameObjectLeftPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
 
         IGameObject gameObjectRightPaddle = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Right Paddle");
         gameObjectRightPaddle.Transform.SetTransform(position: new Vector2D(468f, 0f), scale: new Vector2D(15f, 60f));
-        gameObjectRightPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.Up, Keys.Down, 228f, -228f, 400f);
+        gameObjectRightPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.Up, Keys.Down, 228f, -228f, 400f).Id = "rightPaddle"; ;
         gameObjectRightPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape.Box);
         gameObjectRightPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;
 
@@ -130,6 +133,18 @@ public class GamePong : Game
         IGameObject gameObjectRightScoreText = gameManager.InstantiateGameObject<GameObject>().SetGameObject("Score Right");
         gameObjectRightScoreText.Transform.SetTransform(position: new Vector2D(250f, 250f), scale: Vector2D.One * .25f);
         gameObjectRightScoreText.BehaviourController.AddBehaviour<TextScoreBehaviour>(false, spriteFont);
+
+        string[] commandLineArguments = Environment.GetCommandLineArgs();
+        if (commandLineArguments.Length != 1)
+        {
+            if (commandLineArguments[1].Equals("server", StringComparison.OrdinalIgnoreCase))
+                pongManager.BehaviourController.AddBehaviour<NetworkServer>().Start(8888, 2);
+            else
+                pongManager.BehaviourController.AddBehaviour<NetworkClient>().Connect(commandLineArguments[1], 8888);
+
+        }
+        else
+            pongManager.BehaviourController.AddBehaviour<NetworkClient>().Connect("127.0.0.1", 8888);
     }
 
     protected override void Update(GameTime gameTime)

Game/Network/INetworkClient.cs

@@ -0,0 +1,6 @@
+namespace Pong.Network;
+
+public interface INetworkClient : INetworkCommunicator
+{
+    void Connect(string address, int port, string? password = null);
+}

Game/Network/INetworkCommunicator.cs

@@ -0,0 +1,19 @@
+using System;
+using LiteNetLib;
+using LiteNetLib.Utils;
+using Syntriax.Engine.Core.Abstract;
+
+namespace Pong.Network;
+
+public interface INetworkCommunicator
+{
+    EventBasedNetListener Listener { get; }
+    NetManager Manager { get; }
+
+    void PollEvents();
+    void Stop();
+
+    void RegisterEntityListener(IEntity entity, Action<NetPacketReader> onDataReceived);
+    void UnregisterEntityListener(IEntity entity);
+    NetDataWriter GetEntityWriter(IEntity entity);
+}

Game/Network/INetworkServer.cs

@@ -0,0 +1,10 @@
+namespace Pong.Network;
+
+public interface INetworkServer : INetworkCommunicator
+{
+    string Password { get; }
+    int MaxConnectionCount { get; }
+    int Port { get; }
+
+    void Start(int port, int maxConnectionCount, string? password = null);
+}

Game/Network/NetworkBase.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+
+using LiteNetLib;
+using LiteNetLib.Utils;
+
+using Syntriax.Engine.Core;
+using Syntriax.Engine.Core.Abstract;
+
+namespace Pong.Network;
+
+public abstract class NetworkBase : BehaviourOverride, INetworkCommunicator
+{
+    public EventBasedNetListener Listener { get; private set; } = null!;
+    public NetManager Manager { get; private set; } = null!;
+
+    public NetworkBase()
+    {
+        Priority = 10;
+
+        Listener = new EventBasedNetListener();
+        Manager = new NetManager(Listener);
+
+        Listener.NetworkReceiveEvent += NetworkReceiveEvent;
+    }
+
+    public void PollEvents() => Manager.PollEvents();
+    public void Stop() => Manager.Stop();
+
+    protected override void OnUpdate() => PollEvents();
+    protected override void OnFinalize() => Stop();
+
+    private Dictionary<string, Action<NetPacketReader>> callbacks = new(32);
+
+    private void NetworkReceiveEvent(NetPeer peer, NetPacketReader reader, byte channel, DeliveryMethod deliveryMethod)
+    {
+        if (callbacks.TryGetValue(reader.GetString(), out var action))
+            action?.Invoke(reader);
+
+        reader.Recycle();
+    }
+
+    public void RegisterEntityListener(IEntity entity, Action<NetPacketReader> onDataReceived)
+    {
+        if (callbacks.ContainsKey(entity.Id))
+            return;
+
+        callbacks.Add(entity.Id, onDataReceived);
+        entity.OnIdChanged += OnEntityIdChanged;
+    }
+
+    public void UnregisterEntityListener(IEntity entity)
+    {
+        if (!callbacks.Remove(entity.Id))
+            return;
+
+        entity.OnIdChanged -= OnEntityIdChanged;
+    }
+
+    public NetDataWriter GetEntityWriter(IEntity entity)
+    {
+        NetDataWriter netDataWriter = new();
+        netDataWriter.Put(entity.Id);
+        return netDataWriter;
+    }
+
+    private void OnEntityIdChanged(IEntity entity, string previousId)
+    {
+        var action = callbacks[previousId];
+        callbacks.Remove(previousId);
+        callbacks.Add(entity.Id, action);
+    }
+}

Game/Network/NetworkClient.cs

@@ -1,21 +1,10 @@
-using LiteNetLib;
+namespace Pong.Network;
 
-namespace Game.Network;
-
-public class NetworkClient
+public class NetworkClient : NetworkBase, INetworkClient
 {
-    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();
+    {
+        Manager.Start();
+        Manager.Connect(address, port, password ?? string.Empty);
+    }
 }

Game/Network/NetworkExtensions.cs

@@ -0,0 +1,17 @@
+using LiteNetLib;
+using LiteNetLib.Utils;
+using Syntriax.Engine.Core;
+
+namespace Pong.Network;
+
+public static class NetworkExtensions
+{
+    public static Vector2D GetVector2D(this NetPacketReader reader)
+        => new(reader.GetFloat(), reader.GetFloat());
+
+    public static void Put(this NetDataWriter writer, Vector2D vector)
+    {
+        writer.Put(vector.X);
+        writer.Put(vector.Y);
+    }
+}

Game/Network/NetworkServer.cs

@@ -1,24 +1,16 @@
-using LiteNetLib;
+namespace Pong.Network;
 
-namespace Game.Network;
-
-public class NetworkServer
+public class NetworkServer : NetworkBase, INetworkServer
 {
     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()
+    public NetworkServer() : base()
     {
-        Listener = new EventBasedNetListener();
-        Server = new NetManager(Listener);
-
         Listener.ConnectionRequestEvent += request =>
         {
-            if (Server.ConnectedPeersCount < MaxConnectionCount)
+            if (Manager.ConnectedPeersCount < MaxConnectionCount)
                 request.AcceptIfKey(Password);
             else
                 request.Reject();
@@ -31,9 +23,6 @@ public class NetworkServer
         MaxConnectionCount = maxConnectionCount;
         Port = port;
 
-        Server.Start(port);
+        Manager.Start(port);
     }
-
-    public void PollEvents() => Server.PollEvents();
-    public void Stop() => Server.Stop();
 }