refactor: network manager refactored for readability
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parent
475d82ba02
commit
f3b7ccaf70
@ -7,32 +7,18 @@ using Syntriax.Engine.Core;
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namespace Syntriax.Engine.Network;
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/// <summary>
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/// Intermediary manager that looks up in it's hierarchy for a <see cref="INetworkCommunicator"/> to route/broadcast it's received packets to their destinations.
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/// </summary>
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public class NetworkManager : UniverseObject, INetworkManager
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{
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private INetworkCommunicator networkCommunicator = null!;
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private readonly Dictionary<Type, Dictionary<Type, List<MethodInfo>>> clientPacketArrivalMethods = [];
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private readonly Dictionary<Type, Dictionary<Type, List<MethodInfo>>> serverPacketArrivalMethods = [];
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private readonly Dictionary<Type, Dictionary<Type, List<DelegateData>>> clientListenerDelegates = [];
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private readonly Dictionary<Type, Dictionary<Type, List<DelegateData>>> serverListenerDelegates = [];
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private readonly Dictionary<Type, Dictionary<string, Event<string, object>>> clientPacketRouters = [];
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private readonly Dictionary<Type, Dictionary<string, Event<string, object>>> serverPacketRouters = [];
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private readonly Dictionary<Type, Dictionary<string, Event<string, object>>> clientPacketListeners = [];
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private readonly Dictionary<Type, Dictionary<string, Event<string, object>>> serverPacketListeners = [];
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private readonly List<(Type packetType, Delegate callback)> delegates = [];
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public INetworkCommunicator NetworkCommunicator
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{
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get => networkCommunicator;
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set
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{
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if (networkCommunicator == value)
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return;
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var previousCommunicator = networkCommunicator;
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networkCommunicator = value;
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if (previousCommunicator is not null) UnsubscribeDelegates(networkCommunicator);
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if (networkCommunicator is not null) SubscribeDelegates(networkCommunicator);
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}
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}
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private readonly List<(Type packetType, Delegate callback)> packetRetrievalDelegates = [];
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private readonly Dictionary<string, INetworkEntity> _networkEntities = [];
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public IReadOnlyDictionary<string, INetworkEntity> NetworkEntities => _networkEntities;
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@ -40,45 +26,205 @@ public class NetworkManager : UniverseObject, INetworkManager
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private readonly BehaviourCollector<INetworkEntity> _networkEntityCollector = new();
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public IBehaviourCollector<INetworkEntity> NetworkEntityCollector => _networkEntityCollector;
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private INetworkCommunicator _networkCommunicator = null!;
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public INetworkCommunicator NetworkCommunicator
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{
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get => _networkCommunicator;
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set
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{
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if (_networkCommunicator == value)
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return;
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var previousCommunicator = _networkCommunicator;
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_networkCommunicator = value;
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if (previousCommunicator is not null) SubscribeCommunicatorMethods(previousCommunicator);
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if (_networkCommunicator is not null) UnsubscribeCommunicatorMethods(_networkCommunicator);
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}
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}
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#region Communicator Subscriptions
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private void SubscribeCommunicatorMethods(INetworkCommunicator networkCommunicator)
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{
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MethodInfo subscribeToPacketsMethod = typeof(INetworkCommunicator)
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.GetMethod(nameof(INetworkCommunicator.SubscribeToPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
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foreach ((Type packetType, Delegate callback) in packetRetrievalDelegates)
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{
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MethodInfo genericSubscribeMethod = subscribeToPacketsMethod.MakeGenericMethod(packetType);
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genericSubscribeMethod.Invoke(networkCommunicator, [callback]);
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}
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}
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private void UnsubscribeCommunicatorMethods(INetworkCommunicator networkCommunicator)
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{
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MethodInfo unsubscribeFromPacketsMethod = typeof(INetworkCommunicator)
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.GetMethod(nameof(INetworkCommunicator.UnsubscribeFromPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
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foreach ((Type packetType, Delegate callback) in packetRetrievalDelegates)
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{
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MethodInfo genericUnsubscribeMethod = unsubscribeFromPacketsMethod.MakeGenericMethod(packetType);
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genericUnsubscribeMethod.Invoke(networkCommunicator, [callback]);
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}
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}
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#endregion
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#region Packet Routing
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private void OnPacketReceived<T>(string senderClientId, T entityDataPacket)
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{
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if (entityDataPacket is IEntityNetworkPacket entityPacket)
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RoutePacket(senderClientId, entityDataPacket, entityPacket);
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else
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BroadcastPacket(senderClientId, entityDataPacket);
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}
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private void RoutePacket<T>(string senderClientId, T entityDataPacket, IEntityNetworkPacket entityPacket)
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{
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if (NetworkCommunicator is INetworkCommunicatorClient)
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RoutePacket(clientPacketRouters, entityPacket.EntityId, senderClientId, entityDataPacket);
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if (NetworkCommunicator is INetworkCommunicatorServer)
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RoutePacket(serverPacketRouters, entityPacket.EntityId, senderClientId, entityDataPacket);
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}
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private void BroadcastPacket<T>(string senderClientId, T entityDataPacket)
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{
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if (NetworkCommunicator is INetworkCommunicatorClient)
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BroadcastPacket(clientPacketRouters, senderClientId, entityDataPacket);
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if (NetworkCommunicator is INetworkCommunicatorServer)
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BroadcastPacket(serverPacketRouters, senderClientId, entityDataPacket);
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}
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private static void BroadcastPacket<T>(
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Dictionary<Type, Dictionary<string, Event<string, object>>> packetRouters,
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string senderClientId,
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T entityDataPacket)
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{
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if (!packetRouters.TryGetValue(entityDataPacket!.GetType(), out Dictionary<string, Event<string, object>>? routers))
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return;
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foreach ((string id, Event<string, object> routerEvent) in routers)
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routerEvent.Invoke(senderClientId, entityDataPacket!);
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}
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private static void RoutePacket<T>(
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Dictionary<Type, Dictionary<string, Event<string, object>>> packetRouters,
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string entityId,
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string senderClientId,
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T entityDataPacket)
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{
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if (!packetRouters.TryGetValue(entityDataPacket!.GetType(), out Dictionary<string, Event<string, object>>? routers))
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return;
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if (!routers.TryGetValue(entityId, out Event<string, object>? routerEvent))
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return;
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routerEvent.Invoke(senderClientId, entityDataPacket!);
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}
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#endregion
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#region Packet Routers
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private static void RegisterPacketRoutersFor(
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INetworkEntity behaviour,
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Dictionary<Type, Dictionary<string, Event<string, object>>> packetRouters,
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Dictionary<Type, Dictionary<Type, List<MethodInfo>>> packetArrivalMethods,
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NetworkType networkType)
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{
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if (!packetArrivalMethods.TryGetValue(behaviour.GetType(), out Dictionary<Type, List<MethodInfo>>? arrivalMethods))
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return;
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foreach ((Type packetType, List<MethodInfo> methods) in arrivalMethods)
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foreach (MethodInfo receiveMethod in methods)
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{
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if (!packetRouters.TryGetValue(packetType, out Dictionary<string, Event<string, object>>? routers))
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{
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routers = [];
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packetRouters.Add(packetType, routers);
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}
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Event<string, object> packetListenerEvent = new();
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RegisterPacketListenerEvent(behaviour, packetListenerEvent, receiveMethod, networkType);
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routers.Add(behaviour.Id, packetListenerEvent);
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}
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}
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private static void RegisterPacketListenerEvent(
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INetworkEntity behaviour,
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Event<string, object> packetListenerEvent,
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MethodInfo receiveMethod,
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NetworkType networkType)
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{
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switch (networkType)
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{
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case NetworkType.Client: packetListenerEvent.AddListener((sender, @object) => receiveMethod.Invoke(behaviour, [@object])); break;
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case NetworkType.Server: packetListenerEvent.AddListener((sender, @object) => receiveMethod.Invoke(behaviour, [sender, @object])); break;
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}
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}
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private static void UnregisterPacketRoutersFor(
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INetworkEntity behaviour,
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Dictionary<Type, Dictionary<string, Event<string, object>>> packetRouters,
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Dictionary<Type, Dictionary<Type, List<MethodInfo>>> packetArrivalMethods)
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{
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if (!packetArrivalMethods.TryGetValue(behaviour.GetType(), out Dictionary<Type, List<MethodInfo>>? arrivalMethods))
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return;
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foreach ((Type packetType, List<MethodInfo> methods) in arrivalMethods)
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{
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if (!packetRouters.TryGetValue(packetType, out Dictionary<string, Event<string, object>>? routers))
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continue;
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if (!routers.TryGetValue(behaviour.Id, out Event<string, object>? routerEvent))
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continue;
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routers.Remove(behaviour.Id);
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routerEvent.Clear();
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}
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}
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#endregion
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#region Engine Callbacks
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private void OnCollected(IBehaviourCollector<INetworkEntity> sender, IBehaviourCollector<INetworkEntity>.BehaviourCollectedArguments args)
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{
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INetworkEntity collectedBehaviour = args.BehaviourCollected;
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if (!_networkEntities.TryAdd(collectedBehaviour.Id, collectedBehaviour))
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throw new($"Unable to add {collectedBehaviour.Id} to {nameof(NetworkManager)}");
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RegisterPacketRoutersFor(collectedBehaviour, clientPacketRouters, clientPacketArrivalMethods, NetworkType.Client);
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RegisterPacketRoutersFor(collectedBehaviour, serverPacketRouters, serverPacketArrivalMethods, NetworkType.Server);
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}
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private void OnRemoved(IBehaviourCollector<INetworkEntity> sender, IBehaviourCollector<INetworkEntity>.BehaviourRemovedArguments args)
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{
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INetworkEntity removedBehaviour = args.BehaviourRemoved;
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if (!_networkEntities.Remove(args.BehaviourRemoved.Id))
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return;
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UnregisterPacketRoutersFor(removedBehaviour, clientPacketRouters, clientPacketArrivalMethods);
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UnregisterPacketRoutersFor(removedBehaviour, serverPacketRouters, serverPacketArrivalMethods);
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}
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protected override void OnExitingUniverse(IUniverse universe) => _networkEntityCollector.Unassign();
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protected override void OnEnteringUniverse(IUniverse universe)
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{
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_networkEntityCollector.Assign(universe);
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NetworkCommunicator = this.GetRequiredUniverseObjectInParent<INetworkCommunicator>();
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}
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#endregion
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#region Initialization
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public NetworkManager()
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{
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CachePacketDelegates();
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CacheListenerDelegates();
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CachePacketRetrievalDelegates();
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CachePacketArrivalMethods();
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_networkEntityCollector.OnCollected.AddListener(OnCollected);
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_networkEntityCollector.OnRemoved.AddListener(OnRemoved);
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}
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private void CacheListenerDelegates()
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private void CachePacketRetrievalDelegates()
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{
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foreach (Type clientListenerClass in GetClassesImplementing(typeof(IPacketListenerClient<>)))
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{
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Dictionary<Type, List<DelegateData>> clientInterfaceListeners = [];
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clientListenerDelegates.Add(clientListenerClass, clientInterfaceListeners);
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foreach (Type clientListenerInterface in GetInterfacesImplementing(clientListenerClass, typeof(IPacketListenerClient<>)))
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{
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Type clientListenerParameterType = clientListenerInterface.GetGenericArguments().First();
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List<DelegateData> delegateDataList = clientListenerInterface.GetMethods().Where(m => m.Name == nameof(IPacketListenerClient<INetworkEntity>.OnClientPacketArrived)).Select(m => new DelegateData(clientListenerParameterType, m)).ToList();
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clientInterfaceListeners.Add(clientListenerParameterType, delegateDataList);
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}
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}
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foreach (Type serverListenerClass in GetClassesImplementing(typeof(IPacketListenerServer<>)))
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{
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Dictionary<Type, List<DelegateData>> serverInterfaceListeners = [];
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serverListenerDelegates.Add(serverListenerClass, serverInterfaceListeners);
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foreach (Type serverListenerInterface in GetInterfacesImplementing(serverListenerClass, typeof(IPacketListenerServer<>)))
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{
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Type serverListenerParameterType = serverListenerInterface.GetGenericArguments().First();
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List<DelegateData> delegateDataList = serverListenerInterface.GetMethods().Where(m => m.Name == nameof(IPacketListenerServer<INetworkEntity>.OnServerPacketArrived)).Select(m => new DelegateData(serverListenerParameterType, m)).ToList();
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serverInterfaceListeners.Add(serverListenerParameterType, delegateDataList);
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}
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}
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}
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private void CachePacketDelegates()
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{
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// Find network packets implementing INetworkPacket
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IEnumerable<Type> packetTypes = AppDomain.CurrentDomain.GetAssemblies().SelectMany(a => a.GetTypes())
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.Where(t => typeof(INetworkPacket).IsAssignableFrom(t) && !t.IsInterface && !t.IsAbstract && !t.IsGenericType);
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@ -92,37 +238,38 @@ public class NetworkManager : UniverseObject, INetworkManager
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Type genericDelegateType = typeof(Event<,>.EventHandler).MakeGenericType(typeof(string), packetType);
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Delegate genericPacketReceivedDelegate = Delegate.CreateDelegate(genericDelegateType, this, genericOnPacketArrivedMethod);
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delegates.Add((packetType, genericPacketReceivedDelegate));
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packetRetrievalDelegates.Add((packetType, genericPacketReceivedDelegate));
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}
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}
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private void SubscribeDelegates(INetworkCommunicator networkCommunicator)
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private void CachePacketArrivalMethods()
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{
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MethodInfo subscribeToPacketsMethod = typeof(INetworkCommunicator)
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.GetMethod(nameof(INetworkCommunicator.SubscribeToPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
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foreach ((Type packetType, Delegate callback) in delegates)
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{
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MethodInfo genericSubscribeMethod = subscribeToPacketsMethod.MakeGenericMethod(packetType);
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genericSubscribeMethod.Invoke(networkCommunicator, [callback]);
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}
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CachePacketArrivalMethods(clientPacketArrivalMethods, typeof(IPacketListenerClient<>), nameof(IPacketListenerClient<INetworkEntity>.OnClientPacketArrived));
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CachePacketArrivalMethods(serverPacketArrivalMethods, typeof(IPacketListenerServer<>), nameof(IPacketListenerServer<INetworkEntity>.OnServerPacketArrived));
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}
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private void UnsubscribeDelegates(INetworkCommunicator networkCommunicator)
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private static void CachePacketArrivalMethods(Dictionary<Type, Dictionary<Type, List<MethodInfo>>> packetArrivalMethods, Type listenerType, string packetArrivalMethodName)
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{
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MethodInfo unsubscribeFromPacketsMethod = typeof(INetworkCommunicator)
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.GetMethod(nameof(INetworkCommunicator.UnsubscribeFromPackets), BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance)!;
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foreach ((Type packetType, Delegate callback) in delegates)
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foreach (Type listenerClass in GetGenericsWith(listenerType))
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{
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MethodInfo genericUnsubscribeMethod = unsubscribeFromPacketsMethod.MakeGenericMethod(packetType);
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Dictionary<Type, List<MethodInfo>> packetRouters = [];
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packetArrivalMethods.Add(listenerClass, packetRouters);
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genericUnsubscribeMethod.Invoke(networkCommunicator, [callback]);
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foreach (Type packetListener in GetGenericInterfacesWith(listenerType, listenerClass))
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{
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Type packetType = packetListener.GetGenericArguments().First();
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List<MethodInfo> arrivalMethods = packetListener
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.GetMethods()
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.Where(m => m.Name == packetArrivalMethodName)
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.ToList();
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packetRouters.Add(packetType, arrivalMethods);
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}
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}
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}
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private static IEnumerable<Type> GetClassesImplementing(Type type)
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private static IEnumerable<Type> GetGenericsWith(Type type)
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=> AppDomain.CurrentDomain
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.GetAssemblies()
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.SelectMany(a =>
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@ -133,124 +280,11 @@ public class NetworkManager : UniverseObject, INetworkManager
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)
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);
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private static IEnumerable<Type> GetInterfacesImplementing(Type type, Type interfaceType)
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private static IEnumerable<Type> GetGenericInterfacesWith(Type interfaceType, Type type)
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=> type.GetInterfaces().Where(
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i => i.IsGenericType && i.GetGenericTypeDefinition() == interfaceType
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);
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#endregion
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private void OnPacketReceived<T>(string senderClientId, T entityDataPacket)
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{
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Type packetType = typeof(T);
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if (entityDataPacket is IEntityNetworkPacket entityPacket)
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{
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if (networkCommunicator is INetworkCommunicatorClient)
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if (clientPacketListeners.TryGetValue(packetType, out Dictionary<string, Event<string, object>>? clientListeners))
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if (clientListeners.TryGetValue(entityPacket.EntityId, out Event<string, object>? clientListenerData))
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clientListenerData.Invoke(senderClientId, entityDataPacket!);
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if (networkCommunicator is INetworkCommunicatorServer)
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if (serverPacketListeners.TryGetValue(packetType, out Dictionary<string, Event<string, object>>? serverListeners))
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if (serverListeners.TryGetValue(entityPacket.EntityId, out Event<string, object>? serverListenerData))
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serverListenerData.Invoke(senderClientId, entityDataPacket!);
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return;
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}
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if (networkCommunicator is INetworkCommunicatorClient)
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if (clientPacketListeners.TryGetValue(packetType, out Dictionary<string, Event<string, object>>? clientListeners))
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foreach ((string id, Event<string, object> clientListenerData) in clientListeners)
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clientListenerData.Invoke(senderClientId, entityDataPacket!);
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if (networkCommunicator is INetworkCommunicatorServer)
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if (serverPacketListeners.TryGetValue(packetType, out Dictionary<string, Event<string, object>>? serverListeners))
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foreach ((string id, Event<string, object> serverListenerData) in serverListeners)
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serverListenerData.Invoke(senderClientId, entityDataPacket!);
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}
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private void OnCollected(IBehaviourCollector<INetworkEntity> sender, IBehaviourCollector<INetworkEntity>.BehaviourCollectedArguments args)
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{
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INetworkEntity collectedBehaviour = args.BehaviourCollected;
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if (!_networkEntities.TryAdd(collectedBehaviour.Id, collectedBehaviour))
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throw new($"Unable to add {collectedBehaviour.Id} to {nameof(NetworkManager)}");
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if (clientListenerDelegates.TryGetValue(collectedBehaviour.GetType(), out Dictionary<Type, List<DelegateData>>? clientInterfaceDelegates))
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foreach ((Type clientListenerInterfaceType, List<DelegateData> clientDelegateDataList) in clientInterfaceDelegates)
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foreach ((Type parameterType, MethodInfo receiveMethod) in clientDelegateDataList)
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{
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if (!clientPacketListeners.TryGetValue(parameterType, out Dictionary<string, Event<string, object>>? clientListeners))
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{
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clientListeners = [];
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clientPacketListeners.Add(parameterType, clientListeners);
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}
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Event<string, object> clientListenerEvent = new();
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clientListenerEvent.AddListener((sender, @object) => receiveMethod.Invoke(collectedBehaviour, [@object]));
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clientListeners.Add(collectedBehaviour.Id, clientListenerEvent);
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}
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if (serverListenerDelegates.TryGetValue(collectedBehaviour.GetType(), out Dictionary<Type, List<DelegateData>>? serverInterfaceDelegates))
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foreach ((Type serverListenerInterfaceType, List<DelegateData> serverDelegateDataList) in serverInterfaceDelegates)
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foreach ((Type parameterType, MethodInfo receiveMethod) in serverDelegateDataList)
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{
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if (!serverPacketListeners.TryGetValue(parameterType, out Dictionary<string, Event<string, object>>? serverListeners))
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{
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serverListeners = [];
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serverPacketListeners.Add(parameterType, serverListeners);
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}
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Event<string, object> serverListenerEvent = new();
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serverListenerEvent.AddListener((sender, @object) => receiveMethod.Invoke(collectedBehaviour, [sender, @object]));
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serverListeners.Add(collectedBehaviour.Id, serverListenerEvent);
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}
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}
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private void OnRemoved(IBehaviourCollector<INetworkEntity> sender, IBehaviourCollector<INetworkEntity>.BehaviourRemovedArguments args)
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{
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INetworkEntity removedBehaviour = args.BehaviourRemoved;
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if (!_networkEntities.Remove(args.BehaviourRemoved.Id))
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return;
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if (clientListenerDelegates.TryGetValue(removedBehaviour.GetType(), out Dictionary<Type, List<DelegateData>>? clientInterfaceDelegates))
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foreach ((Type clientListenerInterfaceType, List<DelegateData> clientDelegateDataList) in clientInterfaceDelegates)
|
||||
foreach ((Type parameterType, MethodInfo receiveMethod) in clientDelegateDataList)
|
||||
{
|
||||
if (!clientPacketListeners.TryGetValue(parameterType, out Dictionary<string, Event<string, object>>? clientListeners))
|
||||
continue;
|
||||
|
||||
if (!clientListeners.TryGetValue(removedBehaviour.Id, out Event<string, object>? clientListenerEvent))
|
||||
continue;
|
||||
|
||||
clientListeners.Remove(removedBehaviour.Id);
|
||||
clientListenerEvent.Clear();
|
||||
}
|
||||
|
||||
if (serverListenerDelegates.TryGetValue(removedBehaviour.GetType(), out Dictionary<Type, List<DelegateData>>? serverInterfaceDelegates))
|
||||
foreach ((Type serverListenerInterfaceType, List<DelegateData> serverDelegateDataList) in serverInterfaceDelegates)
|
||||
foreach ((Type parameterType, MethodInfo receiveMethod) in serverDelegateDataList)
|
||||
{
|
||||
if (!serverPacketListeners.TryGetValue(parameterType, out Dictionary<string, Event<string, object>>? serverListeners))
|
||||
continue;
|
||||
|
||||
if (!serverListeners.TryGetValue(removedBehaviour.Id, out Event<string, object>? serverListenerEvent))
|
||||
continue;
|
||||
|
||||
serverListeners.Remove(removedBehaviour.Id);
|
||||
serverListenerEvent.Clear();
|
||||
}
|
||||
}
|
||||
|
||||
protected override void OnExitingUniverse(IUniverse universe) => _networkEntityCollector.Unassign();
|
||||
protected override void OnEnteringUniverse(IUniverse universe)
|
||||
{
|
||||
_networkEntityCollector.Assign(universe);
|
||||
NetworkCommunicator = this.GetRequiredUniverseObjectInParent<INetworkCommunicator>();
|
||||
}
|
||||
|
||||
private record struct DelegateData(Type ParameterType, MethodInfo ReceiveMethod)
|
||||
{
|
||||
public static implicit operator (Type ParameterType, MethodInfo ReceiveMethod)(DelegateData value) => (value.ParameterType, value.ReceiveMethod);
|
||||
public static implicit operator DelegateData((Type ParameterType, MethodInfo ReceiveMethod) value) => new(value.ParameterType, value.ReceiveMethod);
|
||||
}
|
||||
private enum NetworkType { Client, Server }
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user