9 Commits

41 changed files with 1277 additions and 84 deletions

View File

@@ -7,7 +7,7 @@ namespace Syntriax.Engine.Core;
/// This interface allows for tracking the object's presence in the universe and provides events
/// for notifying when the see enters or exits the universe.
/// </summary>
public interface IUniverseObject : IEntity, IActive, INameable, IHasBehaviourController, IEnumerable<IUniverseObject>
public interface IUniverseObject : IEntity, IActive, INameable, IHasBehaviourController
{
/// <summary>
/// Event triggered when the <see cref="IUniverseObject"/> enters the universe.
@@ -47,7 +47,7 @@ public interface IUniverseObject : IEntity, IActive, INameable, IHasBehaviourCon
/// <summary>
/// The parent <see cref="IUniverseObject"/> of the <see cref="IUniverseObject"/>.
/// </summary>
IUniverseObject? Parent { get; }
IUniverseObject? Parent { get; set; }
/// <summary>
/// The <see cref="IUniverseObject"/>s that have this <see cref="IUniverseObject"/> as their <see cref="Parent"/>.
@@ -75,12 +75,6 @@ public interface IUniverseObject : IEntity, IActive, INameable, IHasBehaviourCon
/// </returns>
internal bool ExitUniverse();
/// <summary>
/// Sets the parent <see cref="IUniverseObject"/> of this <see cref="IUniverseObject"/>.
/// </summary>
/// <param name="universeObject">The parent <see cref="IUniverseObject"/> to set.</param>
void SetParent(IUniverseObject? universeObject);
/// <summary>
/// Adds a child <see cref="IUniverseObject"/> to this <see cref="IUniverseObject"/>.
/// </summary>

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@@ -44,6 +44,7 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
_behaviourController = behaviourController;
OnAssign(behaviourController);
behaviourController.OnUniverseObjectAssigned.AddListener(delegateOnUniverseObjectAssigned);
behaviourController.StateEnable.OnEnabledChanged.AddListener(delegateOnStateEnabledChanged);
if (behaviourController.UniverseObject is not null)
OnUniverseObjectAssigned(behaviourController);
OnBehaviourControllerAssigned?.Invoke(this);
@@ -68,6 +69,7 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
BehaviourController.UniverseObject.OnActiveChanged.RemoveListener(delegateOnUniverseObjectActiveChanged);
StateEnable.OnEnabledChanged.RemoveListener(delegateOnStateEnabledChanged);
BehaviourController.OnUniverseObjectAssigned.RemoveListener(delegateOnUniverseObjectAssigned);
BehaviourController.StateEnable.OnEnabledChanged.RemoveListener(delegateOnStateEnabledChanged);
base.UnassignInternal();
_behaviourController = null!;
}
@@ -76,6 +78,8 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
{
Debug.Assert.AssertBehaviourControllerAssigned(this);
Debug.Assert.AssertStateEnableAssigned(this);
UpdateActive();
}
private void OnStateEnabledChanged(IStateEnable sender, IStateEnable.EnabledChangedArguments args) => UpdateActive();
@@ -84,7 +88,7 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
private void UpdateActive()
{
bool previousActive = IsActive;
_isActive = StateEnable.Enabled && _behaviourController.UniverseObject.IsActive;
_isActive = StateEnable.Enabled && _behaviourController.StateEnable.Enabled && _behaviourController.UniverseObject.IsActive;
if (previousActive != IsActive)
OnActiveChanged?.Invoke(this, new(previousActive));

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@@ -72,7 +72,7 @@ public class BehaviourController : BaseEntity, IBehaviourController
public void RemoveBehaviour<T>(bool removeAll = false) where T : class, IBehaviour
{
for (int i = behaviours.Count; i >= 0; i--)
for (int i = behaviours.Count - 1; i >= 0; i--)
{
if (behaviours[i] is not T behaviour)
continue;

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@@ -10,21 +10,21 @@ public static class Assert
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void AssertBehaviourControllerAssigned(IHasBehaviourController assignable)
=> System.Diagnostics.Debug.Assert(assignable.BehaviourController is not null, $"{assignable.GetType().Name} must be initialized");
=> System.Diagnostics.Debug.Assert(assignable.BehaviourController is not null, $"{assignable.GetType().Name} must be assigned an {nameof(IBehaviourController)}");
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void AssertEntityAssigned(IHasEntity assignable)
=> System.Diagnostics.Debug.Assert(assignable.Entity is not null, $"{assignable.GetType().Name} must be initialized");
=> System.Diagnostics.Debug.Assert(assignable.Entity is not null, $"{assignable.GetType().Name} must be assigned an {nameof(IEntity)}");
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void AssertUniverseAssigned(IHasUniverse assignable)
=> System.Diagnostics.Debug.Assert(assignable.Universe is not null, $"{assignable.GetType().Name} must be initialized");
=> System.Diagnostics.Debug.Assert(assignable.Universe is not null, $"{assignable.GetType().Name} must be assigned an {nameof(IUniverse)}");
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void AssertUniverseObjectAssigned(IHasUniverseObject assignable)
=> System.Diagnostics.Debug.Assert(assignable.UniverseObject is not null, $"{assignable.GetType().Name} must be initialized");
=> System.Diagnostics.Debug.Assert(assignable.UniverseObject is not null, $"{assignable.GetType().Name} must be assigned an {nameof(IUniverseObject)}");
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void AssertStateEnableAssigned(IHasStateEnable assignable)
=> System.Diagnostics.Debug.Assert(assignable.StateEnable is not null, $"{assignable.GetType().Name} must be initialized");
=> System.Diagnostics.Debug.Assert(assignable.StateEnable is not null, $"{assignable.GetType().Name} must be assigned an {nameof(IStateEnable)}");
}

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@@ -27,7 +27,7 @@ public static class BehaviourControllerExtensions
/// <param name="behaviourController">The <see cref="IBehaviourController"/> to start searching from.</param>
/// <returns>The <see cref="IBehaviour"/> of the specified type if found; otherwise, throws <see cref="BehaviourNotFoundException"/>.</returns>
public static T GetRequiredBehaviour<T>(this IBehaviourController behaviourController) where T : class
=> behaviourController.GetBehaviour<T>() ?? throw new BehaviourNotFoundException($"{behaviourController.UniverseObject.Name}'s {nameof(IBehaviourController)} does not contain any {typeof(T).FullName}");
=> behaviourController.GetBehaviour<T>() ?? throw new BehaviourNotFoundException($"{behaviourController.UniverseObject?.Name ?? "NULL"}'s {nameof(IBehaviourController)} does not contain any {typeof(T).FullName}");
/// <summary>
/// Gets an existing <see cref="IBehaviour"/> of the specified type, or adds and returns a new one if it doesn't exist.
@@ -93,7 +93,7 @@ public static class BehaviourControllerExtensions
/// <param name="behaviourController">The <see cref="IBehaviourController"/> to start searching from.</param>
/// <returns>The <see cref="IBehaviour"/> of the specified type if found; otherwise, throws <see cref="BehaviourNotFoundException"/>.</returns>
public static T GetRequiredBehaviourInParent<T>(this IBehaviourController behaviourController) where T : class
=> behaviourController.GetBehaviourInParent<T>() ?? throw new BehaviourNotFoundException($"{behaviourController.UniverseObject.Name}'s {nameof(IBehaviourController)} does not contain any {typeof(T).FullName} on any parent");
=> behaviourController.GetBehaviourInParent<T>() ?? throw new BehaviourNotFoundException($"{behaviourController.UniverseObject?.Name ?? "NULL"}'s {nameof(IBehaviourController)} does not contain any {typeof(T).FullName} on any parent");
/// <summary>
/// Gets all <see cref="IBehaviour"/>s of the specified type in it's <see cref="IUniverseObject"/>'s parents recursively and stores them in the provided list.
@@ -140,7 +140,7 @@ public static class BehaviourControllerExtensions
if (behaviourController.GetBehaviour<T>() is T localBehaviour)
return localBehaviour;
foreach (IUniverseObject child in behaviourController.UniverseObject)
foreach (IUniverseObject child in behaviourController.UniverseObject.Children)
if (GetBehaviourInChildren<T>(child.BehaviourController) is T behaviour)
return behaviour;
@@ -154,7 +154,7 @@ public static class BehaviourControllerExtensions
/// <param name="behaviourController">The <see cref="IBehaviourController"/> to start searching from.</param>
/// <returns>The <see cref="IBehaviour"/> of the specified type if found; otherwise, throws <see cref="BehaviourNotFoundException"/>.</returns>
public static T GetRequiredBehaviourInChildren<T>(this IBehaviourController behaviourController) where T : class
=> behaviourController.GetBehaviourInChildren<T>() ?? throw new BehaviourNotFoundException($"{behaviourController.UniverseObject.Name}'s {nameof(IBehaviourController)} does not contain any {typeof(T).FullName} on any children ");
=> behaviourController.GetBehaviourInChildren<T>() ?? throw new BehaviourNotFoundException($"{behaviourController.UniverseObject?.Name ?? "NULL"}'s {nameof(IBehaviourController)} does not contain any {typeof(T).FullName} on any children ");
/// <summary>
/// Gets all <see cref="IBehaviour"/>s of the specified type in it's <see cref="IUniverseObject"/>'s children recursively and stores them in the provided list.
@@ -176,7 +176,7 @@ public static class BehaviourControllerExtensions
foreach (T behaviour in cache)
behaviours.Add(behaviour);
foreach (IUniverseObject child in universeObject)
foreach (IUniverseObject child in universeObject.Children)
TraverseChildrenForBehaviour(child, behaviours, cache);
}
}

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@@ -12,7 +12,7 @@ public static class UniverseObjectExtensions
if (!string.IsNullOrWhiteSpace(name))
universeObject.Name = name;
if (parent is not null)
universeObject.SetParent(parent);
universeObject.Parent = parent;
return universeObject;
}
@@ -81,7 +81,7 @@ public static class UniverseObjectExtensions
/// <returns>The <see cref="IUniverseObject"/> of the specified type if found; otherwise, null.</returns>
public static T? GetUniverseObjectInParent<T>(this IUniverseObject universeObject) where T : class
{
if (universeObject.GetUniverseObject<T>() is T localUniverseObject)
if (universeObject.Children.GetUniverseObject<T>() is T localUniverseObject)
return localUniverseObject;
IUniverseObject? parent = universeObject;
@@ -129,10 +129,10 @@ public static class UniverseObjectExtensions
/// <returns>The <see cref="IUniverseObject"/> of the specified type if found; otherwise, null.</returns>
public static T? GetUniverseObjectInChildren<T>(this IUniverseObject universeObject) where T : class
{
if (universeObject.GetUniverseObject<T>() is T localUniverseObject)
if (universeObject.Children.GetUniverseObject<T>() is T localUniverseObject)
return localUniverseObject;
foreach (IUniverseObject child in universeObject)
foreach (IUniverseObject child in universeObject.Children)
if (GetUniverseObjectInChildren<T>(child) is T behaviour)
return behaviour;
@@ -246,7 +246,7 @@ public static class UniverseObjectExtensions
foreach (IUniverseObject universeObject in universeObjects)
{
universeObject.Find(cache);
universeObject.Children.Find(cache);
foreach (T behaviour in cache)
instances.Add(behaviour);
}

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@@ -4,10 +4,10 @@ namespace Syntriax.Engine.Core.Factory;
public class BehaviourControllerFactory
{
public static IBehaviourController Instantiate(IUniverseObject universeObject)
=> Instantiate<BehaviourController>(universeObject);
public static IBehaviourController Instantiate(IUniverseObject universeObject, IStateEnable? stateEnable = null)
=> Instantiate<BehaviourController>(universeObject, stateEnable);
public static T Instantiate<T>(IUniverseObject universeObject, params object?[]? args)
public static T Instantiate<T>(IUniverseObject universeObject, IStateEnable? stateEnable = null, params object?[]? args)
where T : class, IBehaviourController
{
T behaviourController = TypeFactory.Get<T>(args);
@@ -18,6 +18,17 @@ public class BehaviourControllerFactory
if (!behaviourController.Assign(universeObject))
throw AssignFailedException.From(behaviourController, universeObject);
if (stateEnable is not null)
{
if (!stateEnable.Assign(behaviourController))
throw AssignFailedException.From(stateEnable, behaviourController);
if (!behaviourController.Assign(stateEnable))
throw AssignFailedException.From(behaviourController, stateEnable);
}
else
StateEnableFactory.Instantiate(behaviourController);
return behaviourController;
}
}

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@@ -12,12 +12,15 @@ public class BehaviourFactory
{
T behaviour = TypeFactory.Get<T>(args);
stateEnable ??= TypeFactory.Get<StateEnable>();
if (!stateEnable.Assign(behaviour))
throw AssignFailedException.From(stateEnable, behaviour);
if (!behaviour.Assign(stateEnable))
throw AssignFailedException.From(behaviour, stateEnable);
if (stateEnable is not null)
{
if (!stateEnable.Assign(behaviour))
throw AssignFailedException.From(stateEnable, behaviour);
if (!behaviour.Assign(stateEnable))
throw AssignFailedException.From(behaviour, stateEnable);
}
else
StateEnableFactory.Instantiate(behaviour);
return behaviour;
}

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@@ -18,18 +18,25 @@ public class UniverseObjectFactory
{
T universeObject = TypeFactory.Get<T>(args);
behaviourController ??= TypeFactory.Get<BehaviourController>();
stateEnable ??= TypeFactory.Get<StateEnable>();
if (behaviourController is not null)
{
if (!behaviourController.Assign(universeObject))
throw AssignFailedException.From(behaviourController, universeObject);
if (!universeObject.Assign(behaviourController))
throw AssignFailedException.From(universeObject, behaviourController);
}
else
BehaviourControllerFactory.Instantiate(universeObject);
if (!behaviourController.Assign(universeObject))
throw AssignFailedException.From(behaviourController, universeObject);
if (!stateEnable.Assign(universeObject))
throw AssignFailedException.From(stateEnable, universeObject);
if (!universeObject.Assign(behaviourController))
throw AssignFailedException.From(universeObject, behaviourController);
if (!universeObject.Assign(stateEnable))
throw AssignFailedException.From(universeObject, stateEnable);
if (stateEnable is not null)
{
if (!stateEnable.Assign(universeObject))
throw AssignFailedException.From(stateEnable, universeObject);
if (!universeObject.Assign(stateEnable))
throw AssignFailedException.From(universeObject, stateEnable);
}
else
StateEnableFactory.Instantiate(universeObject);
return universeObject;
}

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@@ -83,7 +83,7 @@ public class Universe : BaseEntity, IUniverse
public void Remove(IUniverseObject universeObject)
{
universeObject.SetParent(null);
universeObject.Parent = null;
RemoveIncursive(universeObject);
}

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@@ -1,4 +1,3 @@
using System.Collections;
using System.Collections.Generic;
namespace Syntriax.Engine.Core;
@@ -21,8 +20,8 @@ public class UniverseObject : BaseEntity, IUniverseObject
private IBehaviourController _behaviourController = null!;
private bool _isActive = false;
private readonly List<IUniverseObject> _children = [];
private IUniverseObject? _parent = null;
public IUniverseObject? Parent { get; private set; } = null;
public IReadOnlyList<IUniverseObject> Children => _children;
public IBehaviourController BehaviourController => _behaviourController;
public IUniverse Universe => _universe;
@@ -42,6 +41,40 @@ public class UniverseObject : BaseEntity, IUniverseObject
}
}
public IUniverseObject? Parent
{
get => _parent;
set
{
if (value == this)
throw new Exceptions.AssignFailedException($"{Name} can not parent itself");
if (_parent == value)
return;
IUniverseObject? previousParent = Parent;
if (previousParent is not null)
{
previousParent.RemoveChild(this);
previousParent.OnActiveChanged.RemoveListener(OnParentActiveChanged);
}
_parent = value;
if (value is not null)
{
if (value.IsInUniverse && !IsInUniverse)
value.Universe.Register(this);
value.AddChild(this);
value.OnActiveChanged.AddListener(OnParentActiveChanged);
}
UpdateActive();
OnParentChanged?.Invoke(this, new(previousParent, value));
}
}
protected virtual void OnEnteringUniverse(IUniverse universe) { }
bool IUniverseObject.EnterUniverse(IUniverse universe)
{
@@ -67,43 +100,13 @@ public class UniverseObject : BaseEntity, IUniverseObject
return true;
}
public void SetParent(IUniverseObject? parent)
{
if (parent == this)
throw new Exceptions.AssignFailedException($"{Name} can not parent itself");
if (Parent == parent)
return;
IUniverseObject? previousParent = Parent;
if (previousParent is not null)
{
previousParent.RemoveChild(this);
previousParent.OnActiveChanged.RemoveListener(OnParentActiveChanged);
}
Parent = parent;
if (parent is not null)
{
if (parent.IsInUniverse && !IsInUniverse)
parent.Universe.Register(this);
parent.AddChild(this);
parent.OnActiveChanged.AddListener(OnParentActiveChanged);
}
UpdateActive();
OnParentChanged?.Invoke(this, new(previousParent, parent));
}
public void AddChild(IUniverseObject parent)
{
if (_children.Contains(parent))
return;
_children.Add(parent);
parent.SetParent(this);
parent.Parent = this;
OnChildrenAdded?.Invoke(this, new(parent));
}
@@ -112,7 +115,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
if (!_children.Remove(child))
return;
child.SetParent(null);
child.Parent = null;
OnChildrenRemoved?.Invoke(this, new(child));
}
@@ -133,6 +136,7 @@ public class UniverseObject : BaseEntity, IUniverseObject
base.OnAssign(stateEnable);
stateEnable.OnEnabledChanged.AddListener(OnStateEnabledChanged);
UpdateActive();
}
private void OnParentActiveChanged(IActive sender, IActive.ActiveChangedArguments args) => UpdateActive();
@@ -164,7 +168,4 @@ public class UniverseObject : BaseEntity, IUniverseObject
{
_name = GetType().Name;
}
public IEnumerator<IUniverseObject> GetEnumerator() => _children.GetEnumerator();
IEnumerator IEnumerable.GetEnumerator() => _children.GetEnumerator();
}

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@@ -0,0 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net9.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<RootNamespace>Syntriax.Engine.Systems.Network</RootNamespace>
<AssemblyName>Syntriax.Engine.Integration.LiteNetLib</AssemblyName>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="LiteNetLib" Version="1.3.1" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="../../Engine/Engine.csproj" />
</ItemGroup>
</Project>

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@@ -0,0 +1,85 @@
using System.Net.Sockets;
using LiteNetLib;
using LiteNetLib.Utils;
using Syntriax.Engine.Core;
using Syntriax.Engine.Core.Debug;
namespace Syntriax.Engine.Systems.Network;
public class LiteNetLibClient : LiteNetLibCommunicatorBase, INetworkCommunicatorClient
{
private readonly NetDataWriter netDataWriter = new();
private CancellationTokenSource? cancellationTokenSource = null;
protected override IConnection GetConnection(NetPeer peer) => new LiteNetLibServerConnection(peer);
public INetworkCommunicatorClient Connect(string address, int port, string? password = null)
{
if (!UniverseObject.IsInUniverse)
throw new($"{nameof(LiteNetLibClient)} must be in an universe to connect");
password ??= string.Empty;
// Okay, for some reason sometimes LiteNetLib goes dumb when the server hostname has IPv6 address as well as IPv4
// but the client doesn't support IPv6, it still tries to use the v6 unless we explicitly tell the ip to connect to,
// which fails to connect... So for the time being I am preferring IPv4 below over IPv6 for clients.
// TODO: I think this is something that happens on Linux only? I need to check on Windows as well just to be sure.
System.Net.IPAddress[] addresses = System.Net.Dns.GetHostAddresses(address);
string connectionAddress = addresses.FirstOrDefault(a => a.AddressFamily == AddressFamily.InterNetwork, addresses[0]).ToString();
logger?.Log(this, $"Connecting to server at '{address}:{port}' with password '{password}'");
logger?.Log(this, $"Resolved address for {address}: {connectionAddress}");
Manager.Start();
Manager.Connect(connectionAddress, port, password);
return this;
}
public INetworkCommunicatorClient SendToServer<T>(T packet, PacketDelivery packetDelivery) where T : class, new()
{
netDataWriter.Reset();
netPacketProcessor.Write(netDataWriter, packet);
switch (packetDelivery)
{
case PacketDelivery.ReliableInOrder: Manager.FirstPeer.Send(netDataWriter, DeliveryMethod.ReliableOrdered); break;
case PacketDelivery.UnreliableInOrder: Manager.FirstPeer.Send(netDataWriter, DeliveryMethod.Sequenced); break;
case PacketDelivery.ReliableOutOfOrder: Manager.FirstPeer.Send(netDataWriter, DeliveryMethod.ReliableUnordered); break;
case PacketDelivery.UnreliableOutOfOrder: Manager.FirstPeer.Send(netDataWriter, DeliveryMethod.Unreliable); break;
default: Manager.FirstPeer.Send(netDataWriter, DeliveryMethod.ReliableOrdered); break;
}
return this;
}
protected override void OnEnteredUniverse(IUniverse universe)
{
base.OnEnteredUniverse(universe);
cancellationTokenSource = new CancellationTokenSource();
PollEvents(cancellationTokenSource.Token);
}
protected override void OnExitedUniverse(IUniverse universe)
{
base.OnExitedUniverse(universe);
cancellationTokenSource?.Cancel();
}
/// <summary>
/// Client needs to send everything as soon as possible so
/// the events are polled a separate thread running constantly
/// </summary>
private async void PollEvents(CancellationToken cancellationToken) => await Task.Run(() =>
{
while (true)
{
Manager.PollEvents();
Thread.Sleep(1);
}
}, cancellationToken);
}

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@@ -0,0 +1,16 @@
using LiteNetLib;
namespace Syntriax.Engine.Systems.Network;
public record class LiteNetLibClientConnection(NetPeer NetPeer) : IConnection
{
public string Id { get; } = NetPeer.Id.ToString();
public float Ping => NetPeer.Ping * .001f;
public float RoundTrip => NetPeer.RoundTripTime * .001f;
public int PingMs => NetPeer.Ping;
public int RoundTripMs => NetPeer.RoundTripTime;
public override string ToString() => $"Connection({Id})";
}

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@@ -0,0 +1,185 @@
using System.Reflection;
using LiteNetLib;
using LiteNetLib.Utils;
using Syntriax.Engine.Core;
using Syntriax.Engine.Core.Debug;
namespace Syntriax.Engine.Systems.Network;
public abstract class LiteNetLibCommunicatorBase : Behaviour, INetworkCommunicator
{
protected readonly NetPacketProcessor netPacketProcessor = new();
private readonly Dictionary<Type, Event<IConnection, object>> listeners = [];
private readonly Dictionary<string, IConnection> _connections = [];
private readonly Dictionary<int, IConnection> localPeerIdToConnectionDictionary = [];
protected ILogger? logger = null;
public IReadOnlyDictionary<string, IConnection> Connections => _connections;
public EventBasedNetListener Listener { get; private set; } = null!;
public NetManager Manager { get; private set; } = null!;
public Event<INetworkCommunicator, IConnection> OnConnectionEstablished { get; } = new();
public Event<INetworkCommunicator, IConnection> OnConnectionAbolished { get; } = new();
public INetworkCommunicator Stop()
{
Manager.Stop();
return this;
}
protected override void OnEnteredUniverse(IUniverse universe)
{
base.OnEnteredUniverse(universe);
logger = universe.FindBehaviour<ILogger>();
}
protected override void OnExitedUniverse(IUniverse universe)
{
base.OnExitedUniverse(universe);
logger = null;
Stop();
}
protected virtual void OnPacketArrived<T>(T packet, NetPeer peer) where T : INetworkPacket
{
if (!listeners.TryGetValue(typeof(T), out Event<IConnection, object>? @event))
return;
@event.Invoke(localPeerIdToConnectionDictionary[peer.Id], packet);
}
private void NetworkReceiveEvent(NetPeer peer, NetPacketReader reader, byte channel, DeliveryMethod deliveryMethod)
{
try { netPacketProcessor.ReadAllPackets(reader, peer); }
catch (Exception exception) { logger?.LogException(this, exception, force: true); }
}
protected abstract IConnection GetConnection(NetPeer peer);
private void ConnectionEstablished(NetPeer peer)
{
IConnection connection = GetConnection(peer);
localPeerIdToConnectionDictionary.Add(peer.Id, connection);
_connections.Add(connection.Id, connection);
logger?.Log(this, $"Connection established with ip '{peer.Address}' and id '{connection.Id}'");
OnConnectionEstablished.Invoke(this, connection);
}
private void ConnectionAbolished(NetPeer peer, DisconnectInfo disconnectInfo)
{
if (!localPeerIdToConnectionDictionary.TryGetValue(peer.Id, out IConnection? connection))
return;
localPeerIdToConnectionDictionary.Remove(peer.Id);
_connections.Remove(connection.Id);
logger?.Log(this, $"Connection abolished with ip '{peer.Address}' and id '{connection.Id}'");
OnConnectionAbolished.Invoke(this, connection);
}
private void SetupPackets()
{
// Find network packets implementing INetworkPacket
IEnumerable<Type> packetTypes = AppDomain.CurrentDomain.GetAssemblies().SelectMany(a => a.GetTypes())
.Where(t => typeof(INetworkPacket).IsAssignableFrom(t) && !t.IsInterface && !t.IsAbstract && !t.IsGenericType);
MethodInfo subscribeReusableMethod = typeof(NetPacketProcessor)
.GetMethods()
.FirstOrDefault(m => m.Name == nameof(NetPacketProcessor.SubscribeReusable) &&
m.GetParameters().Length == 1 &&
m.GetParameters()[0].ParameterType.GetGenericTypeDefinition() == typeof(Action<,>)
)!;
MethodInfo registerNestedTypeMethod = typeof(NetPacketProcessor)
.GetMethods()
.FirstOrDefault(m => m.Name == nameof(NetPacketProcessor.RegisterNestedType) &&
m.GetParameters().Length == 0
)!;
MethodInfo onPacketArrivedMethod = typeof(LiteNetLibCommunicatorBase)
.GetMethod(nameof(OnPacketArrived), BindingFlags.NonPublic | BindingFlags.Instance)!;
// Register all network packets by calling the methods bellow where T is our found network packet type
// NetPacketProcessor.SubscribeReusable<T, NetPeer>(Action<T, NetPeer> onReceive)
// NetPacketProcessor.RegisterNestedType<T>()
foreach (Type packetType in packetTypes)
{
if (!packetType.IsClass)
{
MethodInfo genericRegisterNestedTypeMethod = registerNestedTypeMethod.MakeGenericMethod(packetType);
genericRegisterNestedTypeMethod.Invoke(netPacketProcessor, []);
continue;
}
MethodInfo genericOnPacketArrivedMethod = onPacketArrivedMethod.MakeGenericMethod(packetType);
Type delegateType = typeof(Action<,>).MakeGenericType(packetType, typeof(NetPeer));
Delegate delegateHandler = Delegate.CreateDelegate(delegateType, this, genericOnPacketArrivedMethod);
MethodInfo genericSubscribeReusableMethod = subscribeReusableMethod.MakeGenericMethod(packetType, typeof(NetPeer));
genericSubscribeReusableMethod.Invoke(netPacketProcessor, [delegateHandler]);
}
}
public LiteNetLibCommunicatorBase()
{
Listener = new EventBasedNetListener();
Manager = new NetManager(Listener);
Listener.NetworkReceiveEvent += NetworkReceiveEvent;
Listener.PeerConnectedEvent += ConnectionEstablished;
Listener.PeerDisconnectedEvent += ConnectionAbolished;
SetupEnginePackets();
SetupPackets();
}
private void SetupEnginePackets()
{
// I know, ugly af. I need to find a better way
netPacketProcessor.RegisterNestedType(AABBNetPacker.Write, AABBNetPacker.Read);
netPacketProcessor.RegisterNestedType(CircleNetPacker.Write, CircleNetPacker.Read);
netPacketProcessor.RegisterNestedType(ColorHSVNetPacker.Write, ColorHSVNetPacker.Read);
netPacketProcessor.RegisterNestedType(ColorRGBANetPacker.Write, ColorRGBANetPacker.Read);
netPacketProcessor.RegisterNestedType(ColorRGBNetPacker.Write, ColorRGBNetPacker.Read);
netPacketProcessor.RegisterNestedType(Line2DEquationNetPacker.Write, Line2DEquationNetPacker.Read);
netPacketProcessor.RegisterNestedType(Line2DNetPacker.Write, Line2DNetPacker.Read);
netPacketProcessor.RegisterNestedType(Projection1DNetPacker.Write, Projection1DNetPacker.Read);
netPacketProcessor.RegisterNestedType(QuaternionNetPacker.Write, QuaternionNetPacker.Read);
netPacketProcessor.RegisterNestedType(Shape2DNetPacker.Write, Shape2DNetPacker.Read);
netPacketProcessor.RegisterNestedType(TriangleNetPacker.Write, TriangleNetPacker.Read);
netPacketProcessor.RegisterNestedType(Vector2DNetPacker.Write, Vector2DNetPacker.Read);
netPacketProcessor.RegisterNestedType(Vector3DNetPacker.Write, Vector3DNetPacker.Read);
}
public INetworkCommunicator SubscribeToPackets<T>(Event<IConnection, T>.EventHandler callback)
{
Type type = typeof(T);
if (!listeners.TryGetValue(type, out Event<IConnection, object>? @event))
{
@event = new();
listeners.Add(type, @event);
}
@event.AddListener(EventDelegateWrapper(callback));
return this;
}
public INetworkCommunicator UnsubscribeFromPackets<T>(Event<IConnection, T>.EventHandler callback)
{
Type type = typeof(T);
if (!listeners.TryGetValue(type, out Event<IConnection, object>? @event))
return this;
@event.RemoveListener(EventDelegateWrapper(callback));
return this;
}
private static Event<IConnection, object>.EventHandler EventDelegateWrapper<T>(Event<IConnection, T>.EventHandler callback) => (sender, @object) => callback.Invoke(sender, (T)@object);
}

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using LiteNetLib;
using LiteNetLib.Utils;
using Syntriax.Engine.Core;
using Syntriax.Engine.Core.Debug;
namespace Syntriax.Engine.Systems.Network;
public class LiteNetLibServer : LiteNetLibCommunicatorBase, INetworkCommunicatorServer
{
public string Password { get; private set; } = string.Empty;
public int MaxConnectionCount { get; private set; } = 2;
public int Port { get; private set; } = 8888;
private readonly NetDataWriter netDataWriter = new();
public LiteNetLibServer() : this(8888, 2) { }
public LiteNetLibServer(int port, int maxConnectionCount) : base()
{
MaxConnectionCount = maxConnectionCount;
Port = port;
Listener.ConnectionRequestEvent += OnConnectionRequest;
}
protected override IConnection GetConnection(NetPeer peer) => new LiteNetLibClientConnection(peer);
private void OnConnectionRequest(ConnectionRequest request)
{
logger?.Log(this, $"Connection request from ip {request.RemoteEndPoint}");
logger?.Log(this, $"Current connection count: {Connections.Count}");
if (Manager.ConnectedPeersCount < MaxConnectionCount)
request.AcceptIfKey(Password);
else
request.Reject();
}
public INetworkCommunicatorServer Start(int port, int maxConnectionCount, string? password = null)
{
if (!UniverseObject.IsInUniverse)
throw new($"{nameof(LiteNetLibServer)} must be in an universe to start");
Password = password ?? string.Empty;
MaxConnectionCount = maxConnectionCount;
Port = port;
logger?.Log(this, $"Starting server on port '{port}' with password '{Password}' and max connection count '{maxConnectionCount}'");
logger?.Log(this, $"Server status: {(Manager.Start(port) ? "Active" : "Failed")}");
return this;
}
public INetworkCommunicatorServer SendToClient<T>(IConnection connection, T packet, PacketDelivery packetDelivery) where T : class, new()
{
netDataWriter.Reset();
netPacketProcessor.Write(netDataWriter, packet);
if (Manager.ConnectedPeerList.FirstOrDefault(p => p.Id.CompareTo(connection.Id) == 0) is not NetPeer netPeer)
throw new($"Peer {connection} couldn't be found.");
switch (packetDelivery)
{
case PacketDelivery.ReliableInOrder: netPeer.Send(netDataWriter, DeliveryMethod.ReliableOrdered); break;
case PacketDelivery.UnreliableInOrder: netPeer.Send(netDataWriter, DeliveryMethod.Sequenced); break;
case PacketDelivery.ReliableOutOfOrder: netPeer.Send(netDataWriter, DeliveryMethod.ReliableUnordered); break;
case PacketDelivery.UnreliableOutOfOrder: netPeer.Send(netDataWriter, DeliveryMethod.Unreliable); break;
default: netPeer.Send(netDataWriter, DeliveryMethod.ReliableOrdered); break;
}
return this;
}
public INetworkCommunicatorServer SendToAll<T>(T packet, PacketDelivery packetDelivery) where T : class, new()
{
netDataWriter.Reset();
netPacketProcessor.Write(netDataWriter, packet);
switch (packetDelivery)
{
case PacketDelivery.ReliableInOrder: Manager.SendToAll(netDataWriter, DeliveryMethod.ReliableOrdered); break;
case PacketDelivery.UnreliableInOrder: Manager.SendToAll(netDataWriter, DeliveryMethod.Sequenced); break;
case PacketDelivery.ReliableOutOfOrder: Manager.SendToAll(netDataWriter, DeliveryMethod.ReliableUnordered); break;
case PacketDelivery.UnreliableOutOfOrder: Manager.SendToAll(netDataWriter, DeliveryMethod.Unreliable); break;
default: Manager.SendToAll(netDataWriter, DeliveryMethod.ReliableOrdered); break;
}
return this;
}
private void PollEvents(IUniverse sender, IUniverse.UpdateArguments args) => Manager.PollEvents();
protected override void OnEnteredUniverse(IUniverse universe)
{
base.OnEnteredUniverse(universe);
universe.OnPostUpdate.AddListener(PollEvents);
}
protected override void OnExitedUniverse(IUniverse universe)
{
base.OnExitedUniverse(universe);
universe.OnPostUpdate.RemoveListener(PollEvents);
}
}

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using LiteNetLib;
namespace Syntriax.Engine.Systems.Network;
public record class LiteNetLibServerConnection(NetPeer NetPeer) : IConnection
{
public string Id => NetPeer.RemoteId.ToString();
public float Ping => NetPeer.Ping * .001f;
public float RoundTrip => NetPeer.RoundTripTime * .001f;
public int PingMs => NetPeer.Ping;
public int RoundTripMs => NetPeer.RoundTripTime;
public override string ToString() => $"Connection({Id})";
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class AABBNetPacker
{
internal static void Write(NetDataWriter writer, AABB data)
{
Vector2DNetPacker.Write(writer, data.LowerBoundary);
Vector2DNetPacker.Write(writer, data.UpperBoundary);
}
internal static AABB Read(NetDataReader reader)
{
Vector2D lowerBoundary = Vector2DNetPacker.Read(reader);
Vector2D upperBoundary = Vector2DNetPacker.Read(reader);
return new AABB(lowerBoundary, upperBoundary);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class CircleNetPacker
{
internal static void Write(NetDataWriter writer, Circle data)
{
Vector2DNetPacker.Write(writer, data.Center);
writer.Put(data.Radius);
}
internal static Circle Read(NetDataReader reader)
{
Vector2D center = Vector2DNetPacker.Read(reader);
float radius = reader.GetFloat();
return new Circle(center, radius);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class ColorHSVNetPacker
{
internal static void Write(NetDataWriter writer, ColorHSV data)
{
writer.Put(data.Hue);
writer.Put(data.Saturation);
writer.Put(data.Value);
}
internal static ColorHSV Read(NetDataReader reader)
{
float hue = reader.GetFloat();
float saturation = reader.GetFloat();
float value = reader.GetFloat();
return new ColorHSV(hue, saturation, value);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class ColorRGBANetPacker
{
internal static void Write(NetDataWriter writer, ColorRGBA data)
{
writer.Put(data.R);
writer.Put(data.G);
writer.Put(data.B);
writer.Put(data.A);
}
internal static ColorRGBA Read(NetDataReader reader)
{
byte red = reader.GetByte();
byte green = reader.GetByte();
byte blue = reader.GetByte();
byte alpha = reader.GetByte();
return new ColorRGBA(red, green, blue, alpha);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class ColorRGBNetPacker
{
internal static void Write(NetDataWriter writer, ColorRGB data)
{
writer.Put(data.R);
writer.Put(data.G);
writer.Put(data.B);
}
internal static ColorRGB Read(NetDataReader reader)
{
byte red = reader.GetByte();
byte green = reader.GetByte();
byte blue = reader.GetByte();
return new ColorRGB(red, green, blue);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class Line2DEquationNetPacker
{
internal static void Write(NetDataWriter writer, Line2DEquation data)
{
writer.Put(data.Slope);
writer.Put(data.OffsetY);
}
internal static Line2DEquation Read(NetDataReader reader)
{
float slope = reader.GetFloat();
float offsetY = reader.GetFloat();
return new Line2DEquation(slope, offsetY);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class Line2DNetPacker
{
internal static void Write(NetDataWriter writer, Line2D data)
{
Vector2DNetPacker.Write(writer, data.From);
Vector2DNetPacker.Write(writer, data.To);
}
internal static Line2D Read(NetDataReader reader)
{
Vector2D from = Vector2DNetPacker.Read(reader);
Vector2D to = Vector2DNetPacker.Read(reader);
return new Line2D(from, to);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class Projection1DNetPacker
{
internal static void Write(NetDataWriter writer, Projection1D data)
{
writer.Put(data.Min);
writer.Put(data.Max);
}
internal static Projection1D Read(NetDataReader reader)
{
float min = reader.GetFloat();
float max = reader.GetFloat();
return new Projection1D(min, max);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class QuaternionNetPacker
{
internal static void Write(NetDataWriter writer, Quaternion data)
{
writer.Put(data.X);
writer.Put(data.Y);
writer.Put(data.Z);
writer.Put(data.W);
}
internal static Quaternion Read(NetDataReader reader)
{
float x = reader.GetFloat();
float y = reader.GetFloat();
float z = reader.GetFloat();
float w = reader.GetFloat();
return new Quaternion(x, y, z, w);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class Shape2DNetPacker
{
internal static void Write(NetDataWriter writer, Shape2D data)
{
writer.Put(data.Vertices.Count);
foreach (Vector2D vertex in data.Vertices)
Vector2DNetPacker.Write(writer, vertex);
}
internal static Shape2D Read(NetDataReader reader)
{
int verticesCount = reader.GetInt();
List<Vector2D> vertices = new(verticesCount);
for (int i = 0; i < verticesCount; i++)
vertices.Add(Vector2DNetPacker.Read(reader));
return new Shape2D(vertices);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class TriangleNetPacker
{
internal static void Write(NetDataWriter writer, Triangle data)
{
Vector2DNetPacker.Write(writer, data.A);
Vector2DNetPacker.Write(writer, data.B);
Vector2DNetPacker.Write(writer, data.C);
}
internal static Triangle Read(NetDataReader reader)
{
Vector2D a = Vector2DNetPacker.Read(reader);
Vector2D b = Vector2DNetPacker.Read(reader);
Vector2D c = Vector2DNetPacker.Read(reader);
return new Triangle(a, b, c);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class Vector2DNetPacker
{
internal static void Write(NetDataWriter writer, Vector2D data)
{
writer.Put(data.X);
writer.Put(data.Y);
}
internal static Vector2D Read(NetDataReader reader)
{
float x = reader.GetFloat();
float y = reader.GetFloat();
return new Vector2D(x, y);
}
}

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using LiteNetLib.Utils;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
internal static class Vector3DNetPacker
{
internal static void Write(NetDataWriter writer, Vector3D data)
{
writer.Put(data.X);
writer.Put(data.Y);
writer.Put(data.Z);
}
internal static Vector3D Read(NetDataReader reader)
{
float x = reader.GetFloat();
float y = reader.GetFloat();
float z = reader.GetFloat();
return new Vector3D(x, y, z);
}
}

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namespace Syntriax.Engine.Systems.Network;
public interface IConnection
{
string Id { get; }
float Ping { get; }
float RoundTrip { get; }
int PingMs { get; }
int RoundTripMs { get; }
}

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namespace Syntriax.Engine.Systems.Network;
public interface IEntityNetworkPacket : INetworkPacket
{
string EntityId { get; }
}

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using System.Collections.Generic;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
public interface INetworkCommunicator
{
Event<INetworkCommunicator, IConnection> OnConnectionEstablished { get; }
Event<INetworkCommunicator, IConnection> OnConnectionAbolished { get; }
IReadOnlyDictionary<string, IConnection> Connections { get; }
INetworkCommunicator Stop();
INetworkCommunicator SubscribeToPackets<T>(Event<IConnection, T>.EventHandler callback);
INetworkCommunicator UnsubscribeFromPackets<T>(Event<IConnection, T>.EventHandler callback);
}
public interface INetworkCommunicatorClient : INetworkCommunicator
{
INetworkCommunicatorClient Connect(string address, int port, string? password = null);
INetworkCommunicatorClient SendToServer<T>(T packet, PacketDelivery packetDelivery = PacketDelivery.ReliableInOrder) where T : class, new();
}
public interface INetworkCommunicatorServer : INetworkCommunicator
{
string Password { get; }
int MaxConnectionCount { get; }
int Port { get; }
INetworkCommunicatorServer Start(int port, int maxConnectionCount, string? password = null);
INetworkCommunicatorServer SendToClient<T>(IConnection connection, T packet, PacketDelivery packetDelivery = PacketDelivery.ReliableInOrder) where T : class, new();
INetworkCommunicatorServer SendToAll<T>(T packet, PacketDelivery packetDelivery = PacketDelivery.ReliableInOrder) where T : class, new();
}

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using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
public interface INetworkEntity : IEntity;

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using System.Collections.Generic;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
public interface INetworkManager
{
IReadOnlyDictionary<string, INetworkEntity> NetworkEntities { get; }
IBehaviourCollector<INetworkEntity> NetworkEntityCollector { get; }
}

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namespace Syntriax.Engine.Systems.Network;
public interface INetworkPacket;

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namespace Syntriax.Engine.Systems.Network;
public interface IPacketListenerClient<T> : INetworkEntity
{
void OnClientPacketArrived(IConnection sender, T packet);
}

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namespace Syntriax.Engine.Systems.Network;
public interface IPacketListenerServer<T> : INetworkEntity
{
void OnServerPacketArrived(IConnection sender, T packet);
}

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namespace Syntriax.Engine.Systems.Network;
public enum PacketDelivery
{
ReliableInOrder,
ReliableOutOfOrder,
UnreliableInOrder,
UnreliableOutOfOrder,
};

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Systems.Network;
/// <summary>
/// Intermediary manager that looks up in it's hierarchy for a <see cref="INetworkCommunicator"/> to route/broadcast it's received packets to their destinations.
/// </summary>
public class NetworkManager : Behaviour, INetworkManager
{
private readonly Dictionary<Type, Dictionary<Type, List<MethodInfo>>> clientPacketArrivalMethods = [];
private readonly Dictionary<Type, Dictionary<Type, List<MethodInfo>>> serverPacketArrivalMethods = [];
private readonly Dictionary<Type, Dictionary<string, object>> clientPacketRouters = [];
private readonly Dictionary<Type, Dictionary<string, object>> serverPacketRouters = [];
private readonly List<(Type packetType, Delegate @delegate)> packetRetrievalDelegates = [];
private readonly Dictionary<Type, MethodInfo> clearRoutesMethods = [];
private readonly Dictionary<Type, MethodInfo> registerPacketListenersMethods = [];
private readonly Dictionary<string, INetworkEntity> _networkEntities = [];
public IReadOnlyDictionary<string, INetworkEntity> NetworkEntities => _networkEntities;
private readonly BehaviourCollector<INetworkEntity> _networkEntityCollector = new();
public IBehaviourCollector<INetworkEntity> NetworkEntityCollector => _networkEntityCollector;
private INetworkCommunicator _networkCommunicator = null!;
public INetworkCommunicator NetworkCommunicator
{
get => _networkCommunicator;
set
{
if (_networkCommunicator == value)
return;
INetworkCommunicator? previousCommunicator = _networkCommunicator;
_networkCommunicator = value;
if (previousCommunicator is not null) UnsubscribeCommunicatorMethods(previousCommunicator);
if (_networkCommunicator is not null) SubscribeCommunicatorMethods(_networkCommunicator);
}
}
#region Communicator Subscriptions
private void SubscribeCommunicatorMethods(INetworkCommunicator networkCommunicator)
{
MethodInfo subscribeToPacketsMethod = typeof(INetworkCommunicator)
.GetMethod(nameof(INetworkCommunicator.SubscribeToPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
foreach ((Type packetType, Delegate @delegate) in packetRetrievalDelegates)
{
MethodInfo genericSubscribeMethod = subscribeToPacketsMethod.MakeGenericMethod(packetType);
genericSubscribeMethod.Invoke(networkCommunicator, [@delegate]);
}
}
private void UnsubscribeCommunicatorMethods(INetworkCommunicator networkCommunicator)
{
MethodInfo unsubscribeFromPacketsMethod = typeof(INetworkCommunicator)
.GetMethod(nameof(INetworkCommunicator.UnsubscribeFromPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
foreach ((Type packetType, Delegate @delegate) in packetRetrievalDelegates)
{
MethodInfo genericUnsubscribeMethod = unsubscribeFromPacketsMethod.MakeGenericMethod(packetType);
genericUnsubscribeMethod.Invoke(networkCommunicator, [@delegate]);
}
}
#endregion
#region Packet Routing
private void OnPacketReceived<T>(IConnection sender, T entityDataPacket)
{
if (entityDataPacket is IEntityNetworkPacket entityPacket)
RoutePacket(sender, entityDataPacket, entityPacket);
else
BroadcastPacket(sender, entityDataPacket);
}
private void RoutePacket<T>(IConnection sender, T entityDataPacket, IEntityNetworkPacket entityPacket)
{
if (NetworkCommunicator is INetworkCommunicatorClient)
RoutePacket(clientPacketRouters, entityPacket.EntityId, sender, entityDataPacket);
if (NetworkCommunicator is INetworkCommunicatorServer)
RoutePacket(serverPacketRouters, entityPacket.EntityId, sender, entityDataPacket);
}
private void BroadcastPacket<T>(IConnection sender, T entityDataPacket)
{
if (NetworkCommunicator is INetworkCommunicatorClient)
BroadcastPacket(clientPacketRouters, sender, entityDataPacket);
if (NetworkCommunicator is INetworkCommunicatorServer)
BroadcastPacket(serverPacketRouters, sender, entityDataPacket);
}
private static void BroadcastPacket<T>(
Dictionary<Type, Dictionary<string, object>> packetRouters,
IConnection sender,
T entityDataPacket)
{
if (!packetRouters.TryGetValue(entityDataPacket!.GetType(), out Dictionary<string, object>? routers))
return;
foreach ((string behaviourId, object routerEventReference) in routers)
{
Event<IConnection, T> routerEvent = (Event<IConnection, T>)routerEventReference;
routerEvent.Invoke(sender, entityDataPacket!);
}
}
private static void RoutePacket<T>(
Dictionary<Type, Dictionary<string, object>> packetRouters,
string entityId,
IConnection sender,
T entityDataPacket)
{
if (!packetRouters.TryGetValue(entityDataPacket!.GetType(), out Dictionary<string, object>? routers))
return;
if (!routers.TryGetValue(entityId, out object? routerEventReference))
return;
Event<IConnection, T> routerEvent = (Event<IConnection, T>)routerEventReference;
routerEvent.Invoke(sender, entityDataPacket!);
}
#endregion
#region Packet Routers
private void RegisterPacketRoutersFor(
INetworkEntity behaviour,
Dictionary<Type, Dictionary<string, object>> packetRouters,
Dictionary<Type, Dictionary<Type, List<MethodInfo>>> packetArrivalMethods,
NetworkType networkType)
{
if (!packetArrivalMethods.TryGetValue(behaviour.GetType(), out Dictionary<Type, List<MethodInfo>>? arrivalMethods))
return;
foreach ((Type packetType, List<MethodInfo> methods) in arrivalMethods)
foreach (MethodInfo receiveMethod in methods)
{
if (!packetRouters.TryGetValue(packetType, out Dictionary<string, object>? routers))
{
routers = [];
packetRouters.Add(packetType, routers);
}
object packetListenerEvent = CreateEventAndRegister(packetType, behaviour, networkType);
routers.Add(behaviour.Id, packetListenerEvent);
}
}
private object CreateEventAndRegister(Type packetType, INetworkEntity behaviour, NetworkType networkType)
{
Type genericEventType = typeof(Event<,>).MakeGenericType(typeof(IConnection), packetType);
object packetListenerEvent = Activator.CreateInstance(genericEventType)!;
if (!registerPacketListenersMethods.TryGetValue(packetType, out MethodInfo? registerPacketListenerMethod))
throw new($"{nameof(RegisterPacketListenerEvent)} for {packetType.Name} has not been cached.");
registerPacketListenerMethod.Invoke(this, [behaviour, packetListenerEvent, networkType]);
return packetListenerEvent;
}
private static void RegisterPacketListenerEvent<T>(
INetworkEntity behaviour,
Event<IConnection, T> packetListenerEvent,
NetworkType networkType)
{
switch (networkType)
{
case NetworkType.Client: packetListenerEvent.AddListener((sender, packet) => ((IPacketListenerClient<T>)behaviour).OnClientPacketArrived(sender, packet)); break;
case NetworkType.Server: packetListenerEvent.AddListener((sender, packet) => ((IPacketListenerServer<T>)behaviour).OnServerPacketArrived(sender, packet)); break;
}
}
private void UnregisterPacketRoutersFor(
INetworkEntity behaviour,
Dictionary<Type, Dictionary<string, object>> packetRouters,
Dictionary<Type, Dictionary<Type, List<MethodInfo>>> packetArrivalMethods)
{
if (!packetArrivalMethods.TryGetValue(behaviour.GetType(), out Dictionary<Type, List<MethodInfo>>? arrivalMethods))
return;
foreach ((Type packetType, List<MethodInfo> methods) in arrivalMethods)
{
if (!packetRouters.TryGetValue(packetType, out Dictionary<string, object>? routers))
continue;
if (!routers.TryGetValue(behaviour.Id, out object? routerEventReference))
continue;
if (!clearRoutesMethods.TryGetValue(packetType, out MethodInfo? clearRouterMethod))
continue;
clearRouterMethod.Invoke(this, [routerEventReference]);
}
}
private static void ClearRouter<T>(object routerEventReference)
{
Event<IConnection, T> routerEvent = (Event<IConnection, T>)routerEventReference;
routerEvent.Clear();
}
#endregion
#region Engine Callbacks
private void OnCollected(IBehaviourCollector<INetworkEntity> sender, IBehaviourCollector<INetworkEntity>.BehaviourCollectedArguments args)
{
INetworkEntity collectedBehaviour = args.BehaviourCollected;
if (!_networkEntities.TryAdd(collectedBehaviour.Id, collectedBehaviour))
throw new($"Unable to add {collectedBehaviour.Id} to {nameof(NetworkManager)}");
RegisterPacketRoutersFor(collectedBehaviour, clientPacketRouters, clientPacketArrivalMethods, NetworkType.Client);
RegisterPacketRoutersFor(collectedBehaviour, serverPacketRouters, serverPacketArrivalMethods, NetworkType.Server);
}
private void OnRemoved(IBehaviourCollector<INetworkEntity> sender, IBehaviourCollector<INetworkEntity>.BehaviourRemovedArguments args)
{
INetworkEntity removedBehaviour = args.BehaviourRemoved;
if (!_networkEntities.Remove(args.BehaviourRemoved.Id))
return;
UnregisterPacketRoutersFor(removedBehaviour, clientPacketRouters, clientPacketArrivalMethods);
UnregisterPacketRoutersFor(removedBehaviour, serverPacketRouters, serverPacketArrivalMethods);
}
protected override void OnExitedUniverse(IUniverse universe) => _networkEntityCollector.Unassign();
protected override void OnEnteredUniverse(IUniverse universe)
{
_networkEntityCollector.Assign(universe);
NetworkCommunicator = BehaviourController.GetRequiredBehaviourInParent<INetworkCommunicator>();
}
#endregion
#region Initialization
public NetworkManager()
{
CachePacketRetrievalDelegates();
CacheRegistrationMethods();
CachePacketArrivalMethods();
_networkEntityCollector.OnCollected.AddListener(OnCollected);
_networkEntityCollector.OnRemoved.AddListener(OnRemoved);
}
private void CachePacketRetrievalDelegates()
{
IEnumerable<Type> packetTypes = AppDomain.CurrentDomain.GetAssemblies().SelectMany(a => a.GetTypes())
.Where(t => typeof(INetworkPacket).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(Event<,>.EventHandler).MakeGenericType(typeof(IConnection), packetType);
Delegate genericPacketReceivedDelegate = Delegate.CreateDelegate(genericDelegateType, this, genericOnPacketArrivedMethod);
packetRetrievalDelegates.Add((packetType, genericPacketReceivedDelegate));
}
}
private void CacheRegistrationMethods()
{
CacheRegistrationMethods(registerPacketListenersMethods, nameof(RegisterPacketListenerEvent));
CacheRegistrationMethods(clearRoutesMethods, nameof(ClearRouter));
}
private void CacheRegistrationMethods(Dictionary<Type, MethodInfo> registrationMethods, string methodName)
{
MethodInfo registerPacketMethod = typeof(NetworkManager).GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Static)!;
foreach ((Type packetType, Delegate @delegate) in packetRetrievalDelegates)
{
MethodInfo genericMethod = registerPacketMethod.MakeGenericMethod(packetType);
registrationMethods.Add(packetType, genericMethod);
}
}
private void CachePacketArrivalMethods()
{
CachePacketArrivalMethods(clientPacketArrivalMethods, typeof(IPacketListenerClient<>), nameof(IPacketListenerClient<INetworkEntity>.OnClientPacketArrived));
CachePacketArrivalMethods(serverPacketArrivalMethods, typeof(IPacketListenerServer<>), nameof(IPacketListenerServer<INetworkEntity>.OnServerPacketArrived));
}
private static void CachePacketArrivalMethods(Dictionary<Type, Dictionary<Type, List<MethodInfo>>> packetArrivalMethods, Type listenerType, string packetArrivalMethodName)
{
foreach (Type listenerClass in GetGenericsWith(listenerType))
{
Dictionary<Type, List<MethodInfo>> packetRouters = [];
packetArrivalMethods.Add(listenerClass, packetRouters);
foreach (Type packetListener in GetGenericInterfacesWith(listenerType, listenerClass))
{
Type packetType = packetListener.GetGenericArguments().First();
List<MethodInfo> arrivalMethods = packetListener
.GetMethods()
.Where(m => m.Name == packetArrivalMethodName)
.ToList();
packetRouters.Add(packetType, arrivalMethods);
}
}
}
private static IEnumerable<Type> GetGenericsWith(Type type)
=> AppDomain.CurrentDomain
.GetAssemblies()
.SelectMany(a =>
a.GetTypes().Where(
t => t.GetInterfaces().Any(
i => i.IsGenericType && i.GetGenericTypeDefinition() == type
)
)
);
private static IEnumerable<Type> GetGenericInterfacesWith(Type interfaceType, Type type)
=> type.GetInterfaces().Where(
i => i.IsGenericType && i.GetGenericTypeDefinition() == interfaceType
);
#endregion
private enum NetworkType { Client, Server }
}

View File

@@ -19,7 +19,11 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "YamlDotNet", "Engine.Serial
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Integration", "Integration", "{823D4020-332D-2C13-F261-6F510F11A57E}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MonoGame", "Engine.Integration\Engine.Integration.MonoGame\Engine.Integration.MonoGame.csproj", "{C3438D33-0879-44E4-9DF0-D29F5621C44C}"
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Engine.Integration.MonoGame", "Engine.Integration\Engine.Integration.MonoGame\Engine.Integration.MonoGame.csproj", "{C3438D33-0879-44E4-9DF0-D29F5621C44C}"
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Engine.Integration", "Engine.Integration", "{3122C4BF-14AF-E0C0-27A2-43B3E062692D}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Engine.Integration.LiteNetLib", "Engine.Integration\Engine.Integration.LiteNetLib\Engine.Integration.LiteNetLib.csproj", "{121A7C66-1691-4DA5-B070-A681A83779AC}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -115,6 +119,18 @@ Global
{C3438D33-0879-44E4-9DF0-D29F5621C44C}.Release|x64.Build.0 = Release|Any CPU
{C3438D33-0879-44E4-9DF0-D29F5621C44C}.Release|x86.ActiveCfg = Release|Any CPU
{C3438D33-0879-44E4-9DF0-D29F5621C44C}.Release|x86.Build.0 = Release|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Debug|Any CPU.Build.0 = Debug|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Debug|x64.ActiveCfg = Debug|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Debug|x64.Build.0 = Debug|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Debug|x86.ActiveCfg = Debug|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Debug|x86.Build.0 = Debug|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Release|Any CPU.ActiveCfg = Release|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Release|Any CPU.Build.0 = Release|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Release|x64.ActiveCfg = Release|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Release|x64.Build.0 = Release|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Release|x86.ActiveCfg = Release|Any CPU
{121A7C66-1691-4DA5-B070-A681A83779AC}.Release|x86.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
@@ -123,5 +139,6 @@ Global
{E9D1CDC3-5BFF-4C87-AFEB-6CE372709176} = {F88E129A-9A47-4D27-96EE-6EC02F79594B}
{3D852C92-BC14-4893-AEF2-50612DAFCD8F} = {F88E129A-9A47-4D27-96EE-6EC02F79594B}
{C3438D33-0879-44E4-9DF0-D29F5621C44C} = {823D4020-332D-2C13-F261-6F510F11A57E}
{121A7C66-1691-4DA5-B070-A681A83779AC} = {3122C4BF-14AF-E0C0-27A2-43B3E062692D}
EndGlobalSection
EndGlobal