629 lines
23 KiB
C#
629 lines
23 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Threading;
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using Cysharp.Threading.Tasks;
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using RebootKit.Engine.Extensions;
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using RebootKit.Engine.Foundation;
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using RebootKit.Engine.Main;
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using RebootKit.Engine.Simulation;
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using Unity.Collections;
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using Unity.Netcode;
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using UnityEngine;
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using UnityEngine.Assertions;
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using Logger = RebootKit.Engine.Foundation.Logger;
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namespace RebootKit.Engine.Network {
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enum NetworkClientSyncState {
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NotReady,
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LoadingWorld,
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PreparingForActorsSync,
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SyncingActors,
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Ready
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}
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struct NetworkClientState : INetworkSerializable {
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public ulong ClientID;
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public NetworkClientSyncState SyncState;
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public int ActorsSyncPacketsLeft;
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public NetworkPacketQueue ReliableQueue;
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public NetworkPacketQueue UnreliableQueue;
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public bool IsReady {
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get {
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return SyncState == NetworkClientSyncState.Ready;
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}
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}
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public void NetworkSerialize<T>(BufferSerializer<T> serializer) where T : IReaderWriter {
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serializer.SerializeValue(ref ClientID);
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serializer.SerializeValue(ref SyncState);
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serializer.SerializeValue(ref ActorsSyncPacketsLeft);
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}
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}
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struct NetworkPacketTarget {
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public enum Type {
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AllClients,
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Single,
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Server
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}
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public Type TargetType;
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public ulong ClientID;
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public static NetworkPacketTarget AllClients() {
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return new NetworkPacketTarget {
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TargetType = Type.AllClients,
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ClientID = 0
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};
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}
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public static NetworkPacketTarget Single(ulong clientID) {
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return new NetworkPacketTarget {
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TargetType = Type.Single,
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ClientID = clientID
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};
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}
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public static NetworkPacketTarget Server() {
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return new NetworkPacketTarget {
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TargetType = Type.Server,
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ClientID = 0
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};
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}
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}
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public class NetworkSystem : NetworkBehaviour {
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[ConfigVar("sv.tick_rate", 32, "Server tick rate in Hz", CVarFlags.Server)]
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public static ConfigVar TickRate;
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static readonly Logger s_Logger = new Logger(nameof(NetworkSystem));
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const int k_ReliablePacketQueueSize = 1024;
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const int k_UnreliablePacketQueueSize = 512;
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[field: SerializeField] public ActorsManager Actors { get; private set; }
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internal readonly Dictionary<ulong, NetworkClientState> Clients = new Dictionary<ulong, NetworkClientState>();
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public FixedString512Bytes WorldID { get; private set; } = new FixedString512Bytes("");
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bool m_IsChangingWorld = false;
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float m_TickTimer;
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public ulong TickCount { get; private set; }
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public event Action<ulong> ServerTick = delegate { };
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public ulong LocalClientID {
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get {
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return NetworkManager.Singleton.LocalClientId;
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}
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}
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public int LastTickPacketsSentCount { get; private set; }
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NetworkPacketQueue m_ReliablePacketQueue;
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NetworkPacketQueue m_UnreliablePacketQueue;
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NetworkPacketQueue m_ReliablePacketQueueToServer;
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NetworkPacketQueue m_UnreliablePacketQueueToServer;
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//
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// @MARK: Unity callbacks
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//
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void Awake() {
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RR.NetworkSystemInstance = this;
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m_ReliablePacketQueue = new NetworkPacketQueue(k_ReliablePacketQueueSize);
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m_UnreliablePacketQueue = new NetworkPacketQueue(k_UnreliablePacketQueueSize);
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m_ReliablePacketQueueToServer = new NetworkPacketQueue(k_ReliablePacketQueueSize);
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m_UnreliablePacketQueueToServer = new NetworkPacketQueue(k_UnreliablePacketQueueSize);
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}
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void Update() {
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float deltaTime = Time.deltaTime;
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float tickDeltaTime = 1.0f / TickRate.IndexValue;
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m_TickTimer += deltaTime;
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while (m_TickTimer >= tickDeltaTime) {
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m_TickTimer -= tickDeltaTime;
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LastTickPacketsSentCount = 0;
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if (RR.IsServer()) {
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Actors.ServerTick(tickDeltaTime);
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ServerTick?.Invoke(TickCount);
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TickCount++;
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FlushServerPackets();
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}
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if (RR.IsClient()) {
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FlushClientPackets();
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}
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}
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}
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//
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// @MARK: NetworkBehaviour callbacks
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//
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public override void OnNetworkSpawn() {
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base.OnNetworkSpawn();
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NetworkManager.Singleton.OnClientConnectedCallback += OnClientConnected;
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NetworkManager.Singleton.OnClientDisconnectCallback += OnClientDisconnect;
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}
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public override void OnNetworkDespawn() {
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base.OnNetworkDespawn();
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NetworkManager.Singleton.OnClientConnectedCallback -= OnClientConnected;
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NetworkManager.Singleton.OnClientDisconnectCallback -= OnClientDisconnect;
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}
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void OnClientConnected(ulong clientID) {
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if (!IsServer) {
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return;
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}
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s_Logger.Info($"OnClientConnected: {clientID}");
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NetworkClientState newClientState = new NetworkClientState {
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ClientID = clientID,
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SyncState = NetworkClientSyncState.NotReady,
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ReliableQueue = new NetworkPacketQueue(k_ReliablePacketQueueSize),
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UnreliableQueue = new NetworkPacketQueue(k_UnreliablePacketQueueSize)
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};
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Clients.Add(clientID, newClientState);
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if (clientID != NetworkManager.Singleton.LocalClientId) {
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foreach (NetworkClientState state in Clients.Values) {
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UpdateClientStateRpc(state, RpcTarget.Single(clientID, RpcTargetUse.Temp));
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}
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}
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if (!WorldID.IsEmpty) {
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s_Logger.Info($"Synchronizing world load for client {clientID} with world ID '{WorldID}'");
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ClientLoadWorldRpc(WorldID.ToString(), RpcTarget.Single(clientID, RpcTargetUse.Temp));
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}
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}
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void OnClientDisconnect(ulong clientID) {
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s_Logger.Info($"OnClientDisconnect: {clientID}");
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Clients.Remove(clientID);
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}
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//
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// @MARK: Server API
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//
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public void KickClient(ulong clientID, string reason = "Kicked by server") {
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if (!IsServer) {
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s_Logger.Error("Only server can kick clients.");
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return;
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}
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if (NetworkManager.Singleton.ConnectedClients.TryGetValue(clientID, out NetworkClient client)) {
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NetworkManager.Singleton.DisconnectClient(clientID, reason);
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s_Logger.Info($"Kicked client {clientID}: {reason}");
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} else {
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s_Logger.Error($"Client {clientID} not found.");
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}
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}
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public void SetCurrentWorld(string worldID) {
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if (!IsServer) {
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s_Logger.Error("Only server can set the current world.");
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return;
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}
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if (m_IsChangingWorld) {
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s_Logger.Error($"Already changing world to '{WorldID}'. Please wait until the current world change is complete.");
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return;
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}
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WorldConfigAsset worldConfigAsset = RR.GetWorldConfigAsset(worldID);
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if (worldConfigAsset is null) {
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s_Logger.Error($"Failed to set current world: World config asset for '{worldID}' not found.");
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return;
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}
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WorldID = worldID;
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foreach ((ulong _, NetworkClientState clientState) in Clients.ToList()) {
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NetworkClientState state = clientState;
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state.SyncState = NetworkClientSyncState.LoadingWorld;
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UpdateClientState(state);
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}
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ServerLoadWorldAsync(worldConfigAsset, destroyCancellationToken).Forget();
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}
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async UniTask ServerLoadWorldAsync(WorldConfigAsset asset, CancellationToken cancellationToken) {
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s_Logger.Info($"ServerLoadWorldAsync: {asset.Config.name}");
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m_IsChangingWorld = true;
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RR.World.Unload();
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RR.CloseMainMenu();
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await RR.World.LoadAsync(asset.Config, cancellationToken);
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m_IsChangingWorld = false;
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if (!TryGetClientState(NetworkManager.Singleton.LocalClientId, out NetworkClientState localClientState)) {
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s_Logger.Error($"Local client state not found for client ID {NetworkManager.Singleton.LocalClientId}.");
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RR.Disconnect();
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return;
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}
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localClientState.SyncState = NetworkClientSyncState.Ready;
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UpdateClientState(localClientState);
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RR.GameInstance.PlayerBecameReady(localClientState.ClientID);
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ClientLoadWorldRpc(asset.name, RpcTarget.NotMe);
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}
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[Rpc(SendTo.SpecifiedInParams, Delivery = RpcDelivery.Reliable)]
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void ClientLoadWorldRpc(string worldID, RpcParams rpcParams) {
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WorldConfigAsset worldConfigAsset = RR.GetWorldConfigAsset(worldID);
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if (worldConfigAsset is null) {
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s_Logger.Error($"World config asset for '{worldID}' not found.");
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RR.Disconnect();
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return;
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}
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ClientLoadWorldAsync(worldID, destroyCancellationToken).Forget();
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}
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async UniTask ClientLoadWorldAsync(string worldID, CancellationToken cancellationToken) {
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s_Logger.Info($"ClientLoadWorldAsync: {worldID}");
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WorldConfigAsset worldConfigAsset = RR.GetWorldConfigAsset(worldID);
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if (worldConfigAsset is null) {
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s_Logger.Error($"World config asset for '{worldID}' not found.");
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return;
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}
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RR.World.Unload();
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RR.CloseMainMenu();
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await RR.World.LoadAsync(worldConfigAsset.Config, cancellationToken);
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WorldID = worldID;
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ClientLoadedWorldRpc(worldID);
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}
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[Rpc(SendTo.Server, Delivery = RpcDelivery.Reliable)]
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void ClientLoadedWorldRpc(string worldID, RpcParams rpcParams = default) {
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ulong clientID = rpcParams.Receive.SenderClientId;
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if (!WorldID.Equals(worldID)) {
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s_Logger.Error($"Client {clientID} tried to load world '{worldID}', but server is in world '{WorldID}'.");
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NetworkManager.Singleton.DisconnectClient(clientID, "World mismatch!");
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return;
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}
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if (Clients.TryGetValue(clientID, out NetworkClientState clientState)) {
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Actors.InitializeActorsForClient(clientID);
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} else {
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NetworkManager.Singleton.DisconnectClient(clientID, "Client is not registered!");
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}
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}
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//
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// @MARK: Internal
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//
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internal bool TryGetClientState(ulong clientID, out NetworkClientState clientState) {
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return Clients.TryGetValue(clientID, out clientState);
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}
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internal void UpdateClientState(NetworkClientState clientState) {
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if (!IsServer) {
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s_Logger.Error("UpdateClientState can only be called on the server.");
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return;
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}
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Clients[clientState.ClientID] = clientState;
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UpdateClientStateRpc(clientState, RpcTarget.NotServer);
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}
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[Rpc(SendTo.SpecifiedInParams, Delivery = RpcDelivery.Reliable)]
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void UpdateClientStateRpc(NetworkClientState newState, RpcParams rpcParams) {
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Clients[newState.ClientID] = newState;
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}
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internal void ClientSynchronizedActors(ulong clientID) {
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if (TryGetClientState(clientID, out NetworkClientState state)) {
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state.SyncState = NetworkClientSyncState.Ready;
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UpdateClientState(state);
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RR.GameInstance.PlayerBecameReady(clientID);
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} else {
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s_Logger.Error($"Client state for {clientID} not found.");
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}
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}
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internal int GetReadyClientsCount() {
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int count = 0;
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foreach (NetworkClientState clientState in Clients.Values) {
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if (clientState.IsReady) {
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count++;
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}
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}
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return count;
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}
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//
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// @MARK: Network packets
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//
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NetworkPacketQueue GetPacketQueue(NetworkPacketTarget target, bool reliable) {
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if (target.TargetType == NetworkPacketTarget.Type.AllClients) {
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return reliable ? m_ReliablePacketQueue : m_UnreliablePacketQueue;
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}
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if (target.TargetType == NetworkPacketTarget.Type.Server) {
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return reliable ? m_ReliablePacketQueueToServer : m_UnreliablePacketQueueToServer;
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}
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if (target.TargetType == NetworkPacketTarget.Type.Single) {
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if (TryGetClientState(target.ClientID, out NetworkClientState clientState)) {
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return reliable ? clientState.ReliableQueue : clientState.UnreliableQueue;
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}
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s_Logger.Error($"Client state for {target.ClientID} not found.");
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return null;
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}
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s_Logger.Error($"Invalid network packet target type: {target.TargetType}");
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return null;
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}
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internal void WriteActorState(NetworkPacketTarget target, ulong actorID, IActorData actorData) {
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if (!RR.IsServer()) {
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s_Logger.Error("WriteActorState can only be called on the server.");
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return;
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}
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NetworkPacketQueue queue = GetPacketQueue(target, true);
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queue.WriteActorState(actorID, actorData);
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}
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internal void WriteActorTransformState(NetworkPacketTarget target,
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ulong actorID,
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ActorTransformSyncData transformData) {
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if (!RR.IsServer()) {
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s_Logger.Error("WriteActorTransformState can only be called on the server.");
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return;
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}
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NetworkPacketQueue queue = GetPacketQueue(target, false);
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queue.WriteActorTransformState(actorID, transformData);
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}
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internal void WriteActorCoreState(NetworkPacketTarget target,
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ulong actorID,
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ActorCoreStateSnapshot coreData) {
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if (!RR.IsServer()) {
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s_Logger.Error("WriteActorCoreState can only be called on the server.");
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return;
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}
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NetworkPacketQueue queue = GetPacketQueue(target, true);
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queue.WriteActorCoreState(actorID, coreData);
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}
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internal void WriteSpawnActor(NetworkPacketTarget target,
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string assetGUID,
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ulong actorID,
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ActorCoreStateSnapshot coreState,
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IActorData actorData) {
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if (!RR.IsServer()) {
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s_Logger.Error("WriteSpawnActor can only be called on the server.");
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return;
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}
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NetworkPacketQueue queue = GetPacketQueue(target, true);
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queue.WriteSpawnActor(assetGUID, actorID, coreState, actorData);
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}
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internal void WriteActorSynchronize(NetworkPacketTarget target,
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ulong actorID,
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ActorCoreStateSnapshot coreState,
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IActorData actorData) {
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if (!RR.IsServer()) {
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s_Logger.Error("WriteActorSynchronize can only be called on the server.");
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return;
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}
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NetworkPacketQueue queue = GetPacketQueue(target, true);
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queue.WriteActorSynchronize(actorID, coreState, actorData);
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}
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internal void WriteActorEvent(NetworkPacketTarget target,
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ActorEvent actorEvent) {
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if (!RR.IsServer()) {
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s_Logger.Error("WriteActorEvent can only be called on the server.");
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return;
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}
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NetworkPacketQueue queue = GetPacketQueue(target, true);
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queue.WriteActorEvent(actorEvent);
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}
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internal void WriteActorCommand(ActorCommand actorCommand) {
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NetworkPacketQueue queue = GetPacketQueue(NetworkPacketTarget.Server(), true);
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queue.WriteActorCommand(actorCommand);
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}
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void FlushClientPackets() {
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if (!RR.IsClient()) {
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return;
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}
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if (RR.IsServer()) {
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foreach (NetworkPacket networkPacket in m_ReliablePacketQueueToServer.NetworkPackets) {
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if (networkPacket.EntityCount > 0) {
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OnReceivedNetworkPacket(networkPacket.Data);
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}
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}
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foreach (NetworkPacket networkPacket in m_UnreliablePacketQueueToServer.NetworkPackets) {
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if (networkPacket.EntityCount > 0) {
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OnReceivedNetworkPacket(networkPacket.Data);
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}
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}
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} else {
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foreach (NetworkPacket networkPacket in m_ReliablePacketQueueToServer.NetworkPackets) {
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if (networkPacket.EntityCount == 0) {
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continue;
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}
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LastTickPacketsSentCount += 1;
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ReliableReceiveNetworkPacketRpc(networkPacket.Data, RpcTarget.Server);
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}
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foreach (NetworkPacket networkPacket in m_UnreliablePacketQueueToServer.NetworkPackets) {
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if (networkPacket.EntityCount == 0) {
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continue;
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}
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LastTickPacketsSentCount += 1;
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UnreliableReceiveNetworkPacketRpc(networkPacket.Data, RpcTarget.Server);
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}
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}
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m_ReliablePacketQueueToServer.Clear();
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m_UnreliablePacketQueueToServer.Clear();
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}
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void FlushServerPackets() {
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if (!RR.IsServer()) {
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return;
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}
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foreach (NetworkPacket networkPacket in m_ReliablePacketQueue.NetworkPackets) {
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foreach ((ulong clientID, NetworkClientState state) in RR.NetworkSystemInstance.Clients) {
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if (clientID == NetworkManager.Singleton.LocalClientId) {
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continue;
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}
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if (networkPacket.EntityCount == 0) {
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continue;
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}
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if (state.IsReady) {
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LastTickPacketsSentCount += 1;
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ReliableReceiveNetworkPacketRpc(networkPacket.Data,
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RpcTarget.Single(clientID, RpcTargetUse.Temp));
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}
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}
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}
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foreach (NetworkPacket networkPacket in m_UnreliablePacketQueue.NetworkPackets) {
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foreach ((ulong clientID, NetworkClientState state) in RR.NetworkSystemInstance.Clients) {
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if (clientID == NetworkManager.Singleton.LocalClientId) {
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continue;
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}
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if (networkPacket.EntityCount == 0) {
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continue;
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}
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if (state.IsReady) {
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LastTickPacketsSentCount += 1;
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UnreliableReceiveNetworkPacketRpc(networkPacket.Data,
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RpcTarget.Single(clientID, RpcTargetUse.Temp));
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}
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}
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}
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m_ReliablePacketQueue.Clear();
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m_UnreliablePacketQueue.Clear();
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foreach (NetworkClientState clientState in Clients.Values) {
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if (clientState.ClientID == NetworkManager.Singleton.LocalClientId) {
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continue;
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}
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|
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foreach (NetworkPacket networkPacket in clientState.ReliableQueue.NetworkPackets) {
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if (networkPacket.EntityCount == 0) {
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|
continue;
|
|
}
|
|
|
|
LastTickPacketsSentCount += 1;
|
|
ReliableReceiveNetworkPacketRpc(networkPacket.Data,
|
|
RpcTarget.Single(clientState.ClientID, RpcTargetUse.Temp));
|
|
}
|
|
|
|
foreach (NetworkPacket networkPacket in clientState.UnreliableQueue.NetworkPackets) {
|
|
if (networkPacket.EntityCount == 0) {
|
|
continue;
|
|
}
|
|
|
|
LastTickPacketsSentCount += 1;
|
|
UnreliableReceiveNetworkPacketRpc(networkPacket.Data,
|
|
RpcTarget.Single(clientState.ClientID, RpcTargetUse.Temp));
|
|
}
|
|
|
|
clientState.ReliableQueue.Clear();
|
|
clientState.UnreliableQueue.Clear();
|
|
}
|
|
}
|
|
|
|
[Rpc(SendTo.SpecifiedInParams, Delivery = RpcDelivery.Reliable)]
|
|
void ReliableReceiveNetworkPacketRpc(NativeArray<byte> data, RpcParams rpcParams) {
|
|
OnReceivedNetworkPacket(data);
|
|
}
|
|
|
|
[Rpc(SendTo.SpecifiedInParams, Delivery = RpcDelivery.Unreliable)]
|
|
void UnreliableReceiveNetworkPacketRpc(NativeArray<byte> data, RpcParams rpcParams) {
|
|
OnReceivedNetworkPacket(data);
|
|
}
|
|
|
|
void OnReceivedNetworkPacket(NativeArray<byte> data) {
|
|
using NetworkBufferReader reader = new NetworkBufferReader(data);
|
|
|
|
NetworkPacketHeader packetHeader = new NetworkPacketHeader();
|
|
packetHeader.Deserialize(reader);
|
|
|
|
// s_Logger.Info($"Received packet: MagicNumber={packetHeader.MagicNumber}, Version={packetHeader.Version}, EntityCount={packetHeader.EntityCount}");
|
|
|
|
Assert.IsTrue(packetHeader.MagicNumber == RConsts.k_NetworkPacketMagicNumber,
|
|
"Received packet with invalid magic number.");
|
|
|
|
if (packetHeader.EntityCount == 0) {
|
|
s_Logger.Info("Received packet with no entities.\n" + data.ToHexString());
|
|
}
|
|
|
|
for (int i = 0; i < packetHeader.EntityCount; i++) {
|
|
NetworkDataHeader dataHeader = new NetworkDataHeader();
|
|
dataHeader.Deserialize(reader);
|
|
|
|
// s_Logger.Info($"Received entity: Type={dataHeader.Type}, ActorID={dataHeader.ActorID}, DataSize={dataHeader.DataSize}");
|
|
|
|
if (dataHeader.Type == NetworkDataType.None) {
|
|
s_Logger.Info("Data of packet with entry with type None:\n" + data.ToHexString());
|
|
}
|
|
|
|
Assert.IsTrue(dataHeader.Type != NetworkDataType.None, "Received packet with invalid data type.");
|
|
|
|
reader.Read(out NativeArray<byte> entityData, dataHeader.DataSize, Allocator.Temp);
|
|
OnReceivedEntity(dataHeader, entityData);
|
|
|
|
entityData.Dispose();
|
|
}
|
|
}
|
|
|
|
void OnReceivedEntity(NetworkDataHeader header, NativeArray<byte> data) {
|
|
Actors.OnReceivedEntity(header, data);
|
|
}
|
|
}
|
|
} |