Syntriax/Engine-Pong
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feat: client & server packet listener interfaces added

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This commit is contained in:
Syntriax 2025-05-19 22:24:06 +03:00
parent 214c37e63f
commit 57868ce178
9 changed files with 199 additions and 31 deletions
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2
Engine

@ -1 +1 @@
Subproject commit 0bf38234c6dbef8824045c81c4bd79c440a70abc
Subproject commit 3b6a93d37a7453376ad97d52709af750304fe89a

35
Shared/Behaviours/PaddleBehaviour.cs
View File

@ -8,7 +8,8 @@ using Syntriax.Engine.Systems.Input;
namespace Pong.Behaviours;
public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Speed) : Behaviour2D, INetworkEntity
public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Speed) : Behaviour2D,
IPacketListenerServer<PaddleBehaviour.EntityPaddlePositionPacket>, IPacketListenerClient<PaddleBehaviour.EntityPaddlePositionPacket>
{
private Keys Up { get; } = Up;
private Keys Down { get; } = Down;
@ -42,10 +43,8 @@ public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Sp
protected override void OnFirstActiveFrame()
{
inputs = Universe.FindRequiredBehaviour<IButtonInputs<Keys>>();
networkClient = Universe.GetRequiredUniverseObject<INetworkCommunicatorClient>();
networkServer = Universe.GetUniverseObject<INetworkCommunicatorServer>();
networkClient.SubscribeToPackets<EntityPaddlePositionPacket>(ReceiveDataClient);
networkServer?.SubscribeToPackets<EntityPaddlePositionPacket>(ReceiveDataServer);
networkClient = Universe.FindRequiredBehaviour<INetworkCommunicatorClient>();
networkServer = Universe.FindBehaviour<INetworkCommunicatorServer>();
inputs.RegisterOnPress(Up, OnUpPressed);
inputs.RegisterOnRelease(Up, OnUpReleased);
@ -68,9 +67,20 @@ public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Sp
private void OnDownPressed(IButtonInputs<Keys> inputs, Keys keys) { isDownPressed = true; networkClient.SendToServer(new EntityPaddlePositionPacket(this)); }
private void OnDownReleased(IButtonInputs<Keys> inputs, Keys keys) { isDownPressed = false; networkClient.SendToServer(new EntityPaddlePositionPacket(this)); }
public void ReceiveDataClient<T>(T data, string _)
public void OnServerPacketArrived(EntityPaddlePositionPacket packet, string from)
{
if (data is not EntityPaddlePositionPacket position)
if (packet is not EntityPaddlePositionPacket position)
return;
if (position.EntityId.CompareTo(Id) != 0)
return;
networkServer?.SendToClient("*", position);
}
public void OnClientPacketArrived(EntityPaddlePositionPacket packet)
{
if (packet is not EntityPaddlePositionPacket position)
return;
if (position.EntityId.CompareTo(Id) != 0)
@ -80,17 +90,6 @@ public class PaddleBehaviour(Keys Up, Keys Down, float High, float Low, float Sp
isMovingDown = position.IsDownPressed;
}
public void ReceiveDataServer<T>(T data, string fromClientId)
{
if (data is not EntityPaddlePositionPacket position)
return;
if (position.EntityId.CompareTo(Id) != 0)
return;
networkServer?.SendToClient("*", position);
}
public class EntityPaddlePositionPacket : IEntityNetworkPacket
{
public string EntityId { get; set; } = default!;

11
Shared/GamePong.cs
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@ -80,10 +80,15 @@ public class GamePong : Game
if (Environment.GetCommandLineArgs().FirstOrDefault(x => x.CompareTo("-server") == 0) is not null)
{
universe.InstantiateUniverseObject<LiteNetLibServer>().SetUniverseObject("Server").Start(8888, 2);
LiteNetLibServer server = universe.InstantiateUniverseObject().SetUniverseObject("Server").BehaviourController.AddBehaviour<LiteNetLibServer>();
UniverseObjectFactory.Instantiate<NetworkManager>().SetUniverseObject("NetworkManager", server.BehaviourController.UniverseObject);
server.Start(8888, 2);
Window.Title = $"{Window.Title} - Server";
}
universe.InstantiateUniverseObject<LiteNetLibClient>().SetUniverseObject("Client").Connect("localhost", 8888);
LiteNetLibClient client = universe.InstantiateUniverseObject().SetUniverseObject("Client").BehaviourController.AddBehaviour<LiteNetLibClient>();
UniverseObjectFactory.Instantiate<NetworkManager>().SetUniverseObject("NetworkManager", client.BehaviourController.UniverseObject);
client.Connect("localhost", 8888);
universe.InstantiateUniverseObject<PhysicsEngine2D>().SetUniverseObject("Physics Engine 2D");
////////////////////////////////////////////////////////////////////////////////////
@ -169,7 +174,7 @@ public class GamePong : Game
universe.Update(gameTime.ToUniverseTime());
if (Keyboard.GetState().IsKeyDown(Keys.S))
universe.GetRequiredUniverseObject<INetworkCommunicatorClient>().SendToServer<TestMessagePacket>(new TestMessagePacket($"Hola ({gameTime.TotalGameTime.TotalSeconds})"));
universe.FindRequiredBehaviour<INetworkCommunicatorClient>().SendToServer<TestMessagePacket>(new TestMessagePacket($"Hola ({gameTime.TotalGameTime.TotalSeconds})"));
base.Update(gameTime);
}

6
Shared/Network/Abstract/IPacketListenerClient.cs Normal file
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@ -0,0 +1,6 @@
namespace Syntriax.Engine.Network;
public interface IPacketListenerClient<T> : INetworkEntity
{
void OnClientPacketArrived(T packet);
}

6
Shared/Network/Abstract/IPacketListenerServer.cs Normal file
View File

@ -0,0 +1,6 @@
namespace Syntriax.Engine.Network;
public interface IPacketListenerServer<T> : INetworkEntity
{
void OnServerPacketArrived(T packet, string from);
}

2
Shared/Network/LiteNetLib/LiteNetLibClient.cs
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@ -8,7 +8,7 @@ public class LiteNetLibClient : LiteNetLibCommunicatorBase, INetworkCommunicator
public INetworkCommunicatorClient Connect(string address, int port, string? password = null)
{
if (!IsInUniverse)
if (!UniverseObject.IsInUniverse)
throw new($"{nameof(LiteNetLibClient)} must be in an universe to connect");
Manager.Start();

10
Shared/Network/LiteNetLib/LiteNetLibCommunicatorBase.cs
View File

@ -10,7 +10,7 @@ using Syntriax.Engine.Core;
namespace Syntriax.Engine.Network;
public abstract class LiteNetLibCommunicatorBase : UniverseObject, INetworkCommunicator
public abstract class LiteNetLibCommunicatorBase : Behaviour, INetworkCommunicator
{
protected readonly NetPacketProcessor netPacketProcessor = new();
@ -25,12 +25,12 @@ public abstract class LiteNetLibCommunicatorBase : UniverseObject, INetworkCommu
return this;
}
protected override void OnEnteringUniverse(IUniverse universe)
protected override void OnEnteredUniverse(IUniverse universe)
{
universe.OnPreUpdate += PollEvents;
}
protected override void OnExitingUniverse(IUniverse universe)
protected override void OnExitedUniverse(IUniverse universe)
{
universe.OnPreUpdate -= PollEvents;
@ -82,13 +82,11 @@ public abstract class LiteNetLibCommunicatorBase : UniverseObject, INetworkCommu
{
if (!packetType.IsClass)
{
Console.WriteLine($"Registering Nested: {packetType.FullName}");
MethodInfo genericRegisterNestedTypeMethod = registerNestedTypeMethod.MakeGenericMethod(packetType);
genericRegisterNestedTypeMethod.Invoke(netPacketProcessor, []);
continue;
}
Console.WriteLine($"Registering Reusable: {packetType.FullName}");
MethodInfo genericOnPacketArrivedMethod = onPacketArrivedMethod.MakeGenericMethod(packetType);
Type delegateType = typeof(Action<,>).MakeGenericType(packetType, typeof(NetPeer));
@ -131,7 +129,6 @@ public abstract class LiteNetLibCommunicatorBase : UniverseObject, INetworkCommu
public INetworkCommunicator SubscribeToPackets<T>(Action<T, string> callback)
{
Type type = typeof(T);
Console.WriteLine($"Subscribing to: {type.FullName} on {GetType().Name}");
if (!listeners.TryGetValue(type, out List<Delegate>? delegates))
{
delegates = [];
@ -145,7 +142,6 @@ public abstract class LiteNetLibCommunicatorBase : UniverseObject, INetworkCommu
public INetworkCommunicator UnsubscribeFromPackets<T>(Action<T, string> callback)
{
Type type = typeof(T);
Console.WriteLine($"Unsubscribing from: {type.FullName} on {GetType().Name}");
if (!listeners.TryGetValue(type, out List<Delegate>? delegates))
return this;

2
Shared/Network/LiteNetLib/LiteNetLibServer.cs
View File

@ -30,7 +30,7 @@ public class LiteNetLibServer : LiteNetLibCommunicatorBase, INetworkCommunicator
public INetworkCommunicatorServer Start(int port, int maxConnectionCount, string? password = null)
{
if (!IsInUniverse)
if (!UniverseObject.IsInUniverse)
throw new($"{nameof(LiteNetLibServer)} must be in an universe to start");
Password = password ?? string.Empty;

156
Shared/Network/NetworkManager.cs Normal file
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@ -0,0 +1,156 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Network;
public class NetworkManager : UniverseObject, INetworkManager
{
private INetworkCommunicator networkCommunicator = null!;
private readonly List<(Type packetType, Delegate callback)> delegates = [];
public INetworkCommunicator NetworkCommunicator
{
get => networkCommunicator;
set
{
if (networkCommunicator == value)
return;
var previousCommunicator = networkCommunicator;
networkCommunicator = value;
if (previousCommunicator is not null) UnsubscribeDelegates(networkCommunicator);
if (networkCommunicator is not null) SubscribeDelegates(networkCommunicator);
}
}
private readonly Dictionary<Type, List<object>> clientPacketListeners = [];
private readonly Dictionary<Type, List<object>> serverPacketListeners = [];
private readonly Dictionary<string, INetworkEntity> _networkEntities = [];
public IReadOnlyDictionary<string, INetworkEntity> NetworkEntities => _networkEntities;
private readonly BehaviourCollector<INetworkEntity> _networkEntityCollector = new();
public IBehaviourCollector<INetworkEntity> NetworkEntityCollector => _networkEntityCollector;
public NetworkManager()
{
CacheDelegates();
_networkEntityCollector.OnCollected += OnCollected;
_networkEntityCollector.OnRemoved += OnRemoved;
}
private void CacheDelegates()
{
// Find network packets implementing EntityDataPacket<>
IEnumerable<Type> packetTypes = AppDomain.CurrentDomain.GetAssemblies().SelectMany(a => a.GetTypes())
.Where(t => typeof(IEntityNetworkPacket).IsAssignableFrom(t) && !t.IsInterface && !t.IsAbstract && !t.IsGenericType);
MethodInfo onPacketArrivedMethod = GetType()
.GetMethod(nameof(OnPacketReceived), BindingFlags.NonPublic | BindingFlags.Instance)!;
foreach (Type packetType in packetTypes)
{
MethodInfo genericOnPacketArrivedMethod = onPacketArrivedMethod.MakeGenericMethod(packetType);
Type genericDelegateType = typeof(Action<,>).MakeGenericType(packetType, typeof(string));
Delegate genericPacketReceivedDelegate = Delegate.CreateDelegate(genericDelegateType, this, genericOnPacketArrivedMethod);
delegates.Add((packetType, genericPacketReceivedDelegate));
}
}
private void SubscribeDelegates(INetworkCommunicator networkCommunicator)
{
MethodInfo subscribeToPacketsMethod = typeof(INetworkCommunicator)
.GetMethod(nameof(INetworkCommunicator.SubscribeToPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
foreach ((Type packetType, Delegate callback) in delegates)
{
MethodInfo genericSubscribeMethod = subscribeToPacketsMethod.MakeGenericMethod(packetType);
genericSubscribeMethod.Invoke(networkCommunicator, [callback]);
}
}
private void UnsubscribeDelegates(INetworkCommunicator networkCommunicator)
{
MethodInfo unsubscribeFromPacketsMethod = typeof(INetworkCommunicator)
.GetMethod(nameof(INetworkCommunicator.UnsubscribeFromPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
foreach ((Type packetType, Delegate callback) in delegates)
{
MethodInfo genericUnsubscribeMethod = unsubscribeFromPacketsMethod.MakeGenericMethod(packetType);
genericUnsubscribeMethod.Invoke(networkCommunicator, [callback]);
}
}
private void OnPacketReceived<T>(T entityDataPacket, string fromClientId)
{
Type packetType = typeof(T);
if (networkCommunicator is INetworkCommunicatorClient)
if (clientPacketListeners.TryGetValue(packetType, out List<object>? clientListeners))
foreach (object clientListener in clientListeners)
{
MethodInfo clientListenerReceiveMethod = typeof(IPacketListenerClient<>).MakeGenericType(packetType).GetMethods().First(m => m.Name == nameof(IPacketListenerClient<T>.OnClientPacketArrived));
clientListenerReceiveMethod.Invoke(clientListener, [entityDataPacket]);
}
if (networkCommunicator is INetworkCommunicatorServer)
if (serverPacketListeners.TryGetValue(packetType, out List<object>? serverListeners))
foreach (object serverListener in serverListeners)
{
MethodInfo serverListenerReceiveMethod = typeof(IPacketListenerServer<>).MakeGenericType(packetType).GetMethods().First(m => m.Name == nameof(IPacketListenerServer<T>.OnServerPacketArrived));
serverListenerReceiveMethod.Invoke(serverListener, [entityDataPacket, fromClientId]);
}
}
private void OnCollected(IBehaviourCollector<INetworkEntity> sender, INetworkEntity behaviourCollected)
{
if (!_networkEntities.TryAdd(behaviourCollected.Id, behaviourCollected))
throw new($"Unable to add {behaviourCollected.Id} to {nameof(NetworkManager)}");
foreach (Type clientListenerType in behaviourCollected.GetType().GetInterfaces().Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IPacketListenerClient<>)))
{
Type clientListenerParameterType = clientListenerType.GetGenericArguments().First();
if (!clientPacketListeners.TryGetValue(clientListenerParameterType, out List<object>? clientListeners))
{
clientListeners = [];
clientPacketListeners.Add(clientListenerParameterType, clientListeners);
}
clientListeners.Add(behaviourCollected);
}
foreach (Type serverListenerType in behaviourCollected.GetType().GetInterfaces().Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IPacketListenerServer<>)))
{
Type serverListenerParameterType = serverListenerType.GetGenericArguments().First();
if (!serverPacketListeners.TryGetValue(serverListenerParameterType, out List<object>? serverListeners))
{
serverListeners = [];
serverPacketListeners.Add(serverListenerParameterType, serverListeners);
}
serverListeners.Add(behaviourCollected);
}
}
private void OnRemoved(IBehaviourCollector<INetworkEntity> sender, INetworkEntity behaviourRemoved)
{
_networkEntities.Remove(behaviourRemoved.Id);
}
protected override void OnExitingUniverse(IUniverse universe) => _networkEntityCollector.Unassign();
protected override void OnEnteringUniverse(IUniverse universe)
{
_networkEntityCollector.Assign(universe);
NetworkCommunicator = BehaviourController.GetRequiredBehaviourInParent<INetworkCommunicator>();
}
}