wip

Ragon.Core/Application.cs

@@ -0,0 +1,102 @@
+using System.Diagnostics;
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Lobby;
+using Ragon.Core.Time;
+using Ragon.Server;
+using Ragon.Server.ENet;
+
+namespace Ragon.Core;
+
+public class Application : INetworkListener
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  private INetworkServer _server;
+  private Thread _dedicatedThread;
+  private Configuration _configuration;
+  private HandlerRegistry _handlerRegistry;
+  private ILobby _lobby;
+  private Scheduler _scheduler;
+  private Dictionary<ushort, PlayerContext> _contexts = new();
+
+  public Application(Configuration configuration)
+  {
+    _configuration = configuration;
+    _dedicatedThread = new Thread(Execute);
+    _dedicatedThread.IsBackground = true;
+
+    _handlerRegistry = new HandlerRegistry();
+    _lobby = new LobbyInMemory();
+    _scheduler = new Scheduler();
+
+    if (configuration.Socket == "enet")
+      _server = new ENetServer();
+
+    Debug.Assert(_server != null, $"Socket type not supported: {configuration.Socket}. Supported: [enet, websocket]");
+  }
+
+  public void Execute()
+  {
+    while (true)
+    {
+      _scheduler.Tick();
+      _server.Poll();
+      
+      Thread.Sleep((int) 1000.0f / _configuration.SendRate);
+    }
+  }
+
+  public void Start()
+  {
+    var networkConfiguration = new NetworkConfiguration()
+    {
+      LimitConnections = _configuration.LimitConnections,
+      Protocol = RagonVersion.Parse(_configuration.Protocol),
+      Address = "0.0.0.0",
+      Port = _configuration.Port,
+    };
+
+    _server.Start(this, networkConfiguration);
+    _dedicatedThread.Start();
+  }
+
+  public void Stop()
+  {
+    _server.Stop();
+    _dedicatedThread.Interrupt();
+  }
+
+  public void OnConnected(INetworkConnection connection)
+  {
+    var context = new PlayerContext(connection, new LobbyPlayer(connection));
+    context.Lobby = _lobby;
+    context.Scheduler = _scheduler;
+
+    _logger.Trace($"Connected {connection.Id}");
+    _contexts.Add(connection.Id, context);
+  }
+
+  public void OnDisconnected(INetworkConnection connection)
+  {
+    _logger.Trace($"Disconnected {connection.Id}");
+
+    if (_contexts.Remove(connection.Id, out var context))
+    {
+      context.Room?.RemovePlayer(context.RoomPlayer);
+      context.Dispose();
+    }
+  }
+
+  public void OnTimeout(INetworkConnection connection)
+  {
+    if (_contexts.Remove(connection.Id, out var context))
+      context.Dispose();
+  }
+
+  public void OnData(INetworkConnection connection, byte[] data)
+  {
+    if (_contexts.TryGetValue(connection.Id, out var context))
+      _handlerRegistry.Handle(context, data);
+  }
+}

Ragon.Core/Configuration.cs

@@ -0,0 +1,45 @@
+using Newtonsoft.Json;
+using NLog;
+
+namespace Ragon.Core;
+
+[Serializable]
+public struct Configuration
+{
+  public string Key;
+  public string Protocol;
+  public string Socket;
+  public ushort SendRate;
+  public ushort Port;
+  public int SkipTimeout;
+  public int ReconnectTimeout;
+  public int LimitConnections;
+  public int LimitPlayersPerRoom;
+  public int LimitRooms;
+
+  private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
+  private static readonly string ServerVersion = "1.1.0-rc";
+
+  private static void CopyrightInfo()
+  {
+    Logger.Info($"Server Version: {ServerVersion}");
+    Logger.Info($"Machine Name: {Environment.MachineName}");
+    Logger.Info($"OS: {Environment.OSVersion}");
+    Logger.Info($"Processors: {Environment.ProcessorCount}");
+    Logger.Info($"Runtime Version: {Environment.Version}");
+    Logger.Info("==================================");
+    Logger.Info("|                                |");
+    Logger.Info("|            Ragon               |");
+    Logger.Info("|                                |");
+    Logger.Info("==================================");
+  }
+
+  public static Configuration Load(string filePath)
+  {
+    CopyrightInfo();
+      
+    var data = File.ReadAllText(filePath);
+    var configuration = JsonConvert.DeserializeObject<Configuration>(data);
+    return configuration;
+  }
+}

Ragon.Core/Executor.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+using NLog.LayoutRenderers.Wrappers;
+
+namespace Ragon.Core;
+
+public class Executor: TaskScheduler
+{
+  private ChannelReader<Task> _reader;
+  private ChannelWriter<Task> _writer;
+  private Queue<Task> _pendingTasks;
+  
+  public void Run(Task task)
+  {
+    task.Start(this);
+  }
+
+  public Executor()
+  {
+    var channel = Channel.CreateUnbounded<Task>();
+    _reader = channel.Reader;
+    _writer = channel.Writer;
+
+    _pendingTasks = new Queue<Task>();
+  }
+
+  protected override IEnumerable<Task>? GetScheduledTasks()
+  {
+    throw new NotSupportedException();
+  }
+
+  protected override void QueueTask(Task task)
+  {
+    _writer.TryWrite(task);
+  }
+
+  protected override bool TryExecuteTaskInline(Task task, bool taskWasPreviouslyQueued)
+  {
+    return false;
+  }
+
+  public void Execute()
+  {
+    while (_reader.TryRead(out var task))
+    {
+      TryExecuteTask(task);
+      
+      if (task.Status == TaskStatus.Running)
+        _pendingTasks.Enqueue(task);
+    }
+
+    while (_pendingTasks.TryDequeue(out var task))
+      _writer.TryWrite(task);
+  }
+}

Ragon.Core/Game/Entity.cs

@@ -0,0 +1,195 @@
+using Ragon.Common;
+
+namespace Ragon.Core.Game;
+
+public class Entity
+{
+  private static ushort _idGenerator = 0;
+
+  public ushort Id { get; private set; }
+  public RoomPlayer Owner { get; private set; }
+  public RagonAuthority Authority { get; private set; }
+  public EntityState State { get; private set; }
+  public byte[] Payload { get; private set; }
+  public ushort StaticId { get; private set; }
+  public ushort Type { get; private set; }
+  
+  private List<EntityEvent> _bufferedEvents;
+
+  public Entity(RoomPlayer owner, ushort type, ushort staticId, RagonAuthority eventAuthority)
+  {
+    Owner = owner;
+    StaticId = staticId;
+    Type = type;
+    Id = _idGenerator++;
+    Payload = Array.Empty<byte>();
+    Authority = eventAuthority;
+    State = new EntityState(this);
+    
+    _bufferedEvents = new List<EntityEvent>();
+  }
+
+  public void SetPayload(byte[] payload)
+  {
+    Payload = payload;
+  }
+
+  public void SetOwner(RoomPlayer owner)
+  {
+    Owner = owner;
+  }
+  
+  public void RestoreBufferedEvents(RoomPlayer roomPlayer, RagonSerializer writer)
+  {
+    foreach (var bufferedEvent in _bufferedEvents)
+    {
+      writer.Clear();
+      writer.WriteOperation(RagonOperation.REPLICATE_ENTITY_EVENT);
+      writer.WriteUShort(bufferedEvent.EventId);
+      writer.WriteUShort(bufferedEvent.PeerId);
+      writer.WriteByte((byte) RagonReplicationMode.Server);
+      writer.WriteUShort(Id);
+
+      ReadOnlySpan<byte> data = bufferedEvent.EventData.AsSpan();
+      writer.WriteData(ref data);
+
+      var sendData = writer.ToArray();
+      roomPlayer.Connection.ReliableChannel.Send(sendData);
+    }
+  }
+
+  public void Create()
+  {
+    var room = Owner.Room;
+    var serializer = room.Writer;
+
+    serializer.Clear();
+    serializer.WriteOperation(RagonOperation.CREATE_ENTITY);
+    serializer.WriteUShort(Type);
+    serializer.WriteUShort(Id);
+    serializer.WriteUShort(Owner.Connection.Id);
+
+    ReadOnlySpan<byte> entityPayload = Payload.AsSpan();
+    serializer.WriteUShort((ushort) entityPayload.Length);
+    serializer.WriteData(ref entityPayload);
+
+    var sendData = serializer.ToArray();
+    foreach (var player in room.ReadyPlayersList)
+      player.Connection.ReliableChannel.Send(sendData);
+  }
+
+  public void Destroy()
+  {
+    var room = Owner.Room;
+    var serializer = room.Writer;
+
+    serializer.Clear();
+    serializer.WriteOperation(RagonOperation.DESTROY_ENTITY);
+    serializer.WriteInt(Id);
+    serializer.WriteUShort(0);
+    // serializer.WriteData(ref Payload);
+
+    var sendData = serializer.ToArray();
+    foreach (var player in room.ReadyPlayersList)
+      player.Connection.ReliableChannel.Send(sendData);
+  }
+
+  public void ReplicateEvent(
+    RoomPlayer caller,
+    ushort eventId,
+    ReadOnlySpan<byte> payload,
+    RagonReplicationMode eventMode,
+    RoomPlayer targetPlayer
+  )
+  {
+    var room = Owner.Room;
+    var serializer = room.Writer;
+
+    serializer.Clear();
+    serializer.WriteOperation(RagonOperation.REPLICATE_ENTITY_EVENT);
+    serializer.WriteUShort(eventId);
+    serializer.WriteUShort(caller.Connection.Id);
+    serializer.WriteByte((byte) eventMode);
+    serializer.WriteUShort(Id);
+    serializer.WriteData(ref payload);
+
+    var sendData = serializer.ToArray();
+    targetPlayer.Connection.ReliableChannel.Send(sendData);
+  }
+
+  public void ReplicateEvent(
+    RoomPlayer caller,
+    ushort eventId,
+    ReadOnlySpan<byte> payload,
+    RagonReplicationMode eventMode,
+    RagonTarget targetMode
+  )
+  {
+    if (Authority == RagonAuthority.OwnerOnly &&
+        Owner.Connection.Id != caller.Connection.Id)
+    {
+      Console.WriteLine($"Player have not enought authority for event with Id {eventId}");
+      return;
+    }
+
+    if (eventMode == RagonReplicationMode.Buffered && targetMode != RagonTarget.Owner)
+    {
+      var bufferedEvent = new EntityEvent()
+      {
+        EventData = payload.ToArray(),
+        Target = targetMode,
+        EventId = eventId,
+        PeerId = caller.Connection.Id,
+      };
+      _bufferedEvents.Add(bufferedEvent);
+    }
+
+    var room = Owner.Room;
+    var serializer = room.Writer;
+
+    serializer.Clear();
+    serializer.WriteOperation(RagonOperation.REPLICATE_ENTITY_EVENT);
+    serializer.WriteUShort(eventId);
+    serializer.WriteUShort(caller.Connection.Id);
+    serializer.WriteByte((byte) eventMode);
+    serializer.WriteUShort(Id);
+    serializer.WriteData(ref payload);
+
+    var sendData = serializer.ToArray();
+
+    switch (targetMode)
+    {
+      case RagonTarget.Owner:
+      {
+        Owner.Connection.ReliableChannel.Send(sendData);
+        break;
+      }
+      case RagonTarget.ExceptOwner:
+      {
+        foreach (var roomPlayer in room.ReadyPlayersList)
+        {
+          if (roomPlayer.Connection.Id != Owner.Connection.Id)
+            roomPlayer.Connection.ReliableChannel.Send(sendData);
+        }
+
+        break;
+      }
+      case RagonTarget.ExceptInvoker:
+      {
+        foreach (var roomPlayer in room.ReadyPlayersList)
+        {
+          if (roomPlayer.Connection.Id != caller.Connection.Id)
+            roomPlayer.Connection.ReliableChannel.Send(sendData);
+        }
+
+        break;
+      }
+      case RagonTarget.All:
+      {
+        foreach (var roomPlayer in room.ReadyPlayersList)
+          roomPlayer.Connection.ReliableChannel.Send(sendData);
+        break;
+      }
+    }
+  }
+}

Ragon.Core/Game/EntityEvent.cs

@@ -0,0 +1,11 @@
+using Ragon.Common;
+
+namespace Ragon.Core.Game;
+
+public class EntityEvent
+{
+  public ushort PeerId { get; set; }
+  public ushort EventId { get; set; }
+  public byte[] EventData { get; set; }
+  public RagonTarget Target { set; get; }
+}

Ragon.Core/Game/EntityList.cs

@@ -0,0 +1,35 @@
+namespace Ragon.Core.Game;
+
+public class EntityList
+{
+  private List<Entity> _dynamicEntitiesList = new List<Entity>();
+  private List<Entity> _staticEntitesList = new List<Entity>();
+  private Dictionary<ushort, Entity> _entitiesMap = new Dictionary<ushort, Entity>();
+
+  public IReadOnlyList<Entity> StaticList => _staticEntitesList;
+  public IReadOnlyList<Entity> DynamicList => _dynamicEntitiesList;
+  public IReadOnlyDictionary<ushort, Entity> Map => _entitiesMap;
+
+  public void Add(Entity entity)
+  {
+    if (entity.StaticId != 0)
+      _staticEntitesList.Add(entity);
+    else
+      _dynamicEntitiesList.Add(entity);
+    
+    _entitiesMap.Add(entity.Id, entity);
+  }
+
+  public Entity Remove(Entity entity)
+  {
+    if (_entitiesMap.Remove(entity.Id, out var existEntity))
+    {
+      _staticEntitesList.Remove(entity);
+      _dynamicEntitiesList.Remove(entity);
+      
+      return existEntity;
+    }
+
+    return null;
+  }
+}

Ragon.Core/Game/EntityState.cs

@@ -0,0 +1,100 @@
+using NLog;
+using Ragon.Common;
+
+namespace Ragon.Core.Game;
+
+public class EntityState
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  private List<EntityStateProperty> _properties;
+  private Entity _entity;
+
+  public EntityState(Entity entity, int capacity = 10)
+  {
+    _entity = entity;
+    _properties = new List<EntityStateProperty>(10);
+  }
+
+  public void AddProperty(EntityStateProperty property)
+  {
+    _properties.Add(property);
+  }
+  
+  public void Write(RagonSerializer serializer)
+  {
+    serializer.WriteUShort(_entity.Id);
+
+    for (int propertyIndex = 0; propertyIndex < _properties.Count; propertyIndex++)
+    {
+      var property = _properties[propertyIndex];
+      if (property.IsDirty)
+      {
+        serializer.WriteBool(true);
+        var span = serializer.GetWritableData(property.Size);
+        var data = property.Read();
+        data.CopyTo(span);
+        property.Clear();
+      }
+      else
+      {
+        serializer.WriteBool(false);
+      }
+    }
+  }
+  
+  public void Read(RagonSerializer serializer)
+  {
+    for (var i = 0; i < _properties.Count; i++)
+    {
+      if (serializer.ReadBool())
+      {
+        var property = _properties[i];
+        var size = property.Size;
+        if (!property.IsFixed)
+          size = serializer.ReadUShort();
+
+        if (size > property.Capacity)
+        {
+          Console.WriteLine($"Property {i} payload too large, size: {size}");
+          continue;
+        }
+
+        var propertyPayload = serializer.ReadData(size);
+        property.Write(ref propertyPayload);
+        property.Size = size;
+      }
+    }
+  }
+  
+  public void Snapshot(RagonSerializer serializer)
+  {
+    ReadOnlySpan<byte> payload = _entity.Payload.AsSpan();
+
+    serializer.WriteUShort(_entity.Type);
+    serializer.WriteUShort(_entity.Id);
+    
+    if (_entity.StaticId != 0)
+      serializer.WriteUShort(_entity.StaticId);
+    
+    serializer.WriteUShort(_entity.Owner.Connection.Id);
+    serializer.WriteUShort((ushort) payload.Length);
+    serializer.WriteData(ref payload);
+    
+    for (int propertyIndex = 0; propertyIndex < _properties.Count; propertyIndex++)
+    {
+      var property = _properties[propertyIndex];
+      var hasPayload = property.IsFixed || property.Size > 0 && !property.IsFixed;
+      if (hasPayload)
+      {
+        serializer.WriteBool(true);
+        var span = serializer.GetWritableData(property.Size);
+        var data = property.Read();
+        data.CopyTo(span);
+      }
+      else
+      {
+        serializer.WriteBool(false);
+      }
+    }
+  }
+}

Ragon.Core/Game/EntityStateProperty.cs

@@ -0,0 +1,41 @@
+using System;
+using Ragon.Common;
+
+namespace Ragon.Core.Game;
+
+public class EntityStateProperty
+{
+    public int Size { get; set; }
+    public int Capacity { get; set; }
+    public bool IsDirty { get; private set; }
+    public bool IsFixed { get; private set; }
+    private byte[] _data;
+
+    public EntityStateProperty(int size, bool isFixed)
+    {
+        Capacity = 512;
+        Size = size;
+        IsFixed = isFixed;
+        IsDirty = true;
+        
+        _data = new byte[Capacity];
+    }
+    
+    public ReadOnlySpan<byte> Read()
+    {
+        var dataSpan = _data.AsSpan();
+        
+        return dataSpan.Slice(0, Size);
+    }
+
+    public void Write(ref ReadOnlySpan<byte> src)
+    {
+        src.CopyTo(_data);
+        IsDirty = true;
+    }
+  
+    public void Clear()
+    {
+        IsDirty = false;
+    }
+}

Ragon.Core/Game/Room.cs

@@ -0,0 +1,171 @@
+using Ragon.Common;
+
+namespace Ragon.Core.Game;
+
+public class Room
+{
+  public string Id { get; }
+  public RoomInformation Info { get; }
+  public RoomPlayer Owner { get; set; }
+
+  public Dictionary<ushort, RoomPlayer> Players { get; }
+  public List<RoomPlayer> WaitPlayersList { get; private set; }
+  public List<RoomPlayer> ReadyPlayersList { get; private set; }
+  public List<RoomPlayer> PlayerList { get; private set; }
+
+  public Dictionary<ushort, Entity> Entities { get; private set; }
+  public List<Entity> DynamicEntitiesList { get; private set; }
+  public List<Entity> StaticEntitiesList { get; private set; }
+  public List<Entity> EntityList { get; private set; }
+
+  private HashSet<Entity> _entitiesDirtySet;
+  private RagonSerializer _writer;
+
+  public RagonSerializer Writer => _writer;
+  public PluginBase Plugin { get; set; }
+
+  public Room(string roomId, RoomInformation info, PluginBase plugin)
+  {
+    Id = roomId;
+    Info = info;
+
+    Plugin = plugin;
+
+    Players = new Dictionary<ushort, RoomPlayer>(info.Max);
+    WaitPlayersList = new List<RoomPlayer>(info.Max);
+    ReadyPlayersList = new List<RoomPlayer>(info.Max);
+    PlayerList = new List<RoomPlayer>(info.Max);
+
+    Entities = new Dictionary<ushort, Entity>();
+    DynamicEntitiesList = new List<Entity>();
+    StaticEntitiesList = new List<Entity>();
+    EntityList = new List<Entity>();
+
+    _entitiesDirtySet = new HashSet<Entity>();
+    _writer = new RagonSerializer(512);
+  }
+
+  public void AttachEntity(RoomPlayer newOwner, Entity entity)
+  {
+    Entities.Add(entity.Id, entity);
+    EntityList.Add(entity);
+
+    if (entity.StaticId == 0)
+      DynamicEntitiesList.Add(entity);
+    else
+      StaticEntitiesList.Add(entity);
+
+    entity.Create();
+
+    newOwner.Entities.Add(entity);
+  }
+
+  public void DetachEntity(RoomPlayer currentOwner, Entity entity, byte[] payload)
+  {
+    Entities.Remove(entity.Id);
+    EntityList.Remove(entity);
+    StaticEntitiesList.Remove(entity);
+    DynamicEntitiesList.Remove(entity);
+    _entitiesDirtySet.Remove(entity);
+
+    entity.Destroy();
+    currentOwner.Entities.Remove(entity);
+  }
+
+  public void Tick()
+  {
+    var entities = (ushort) _entitiesDirtySet.Count;
+    if (entities > 0)
+    {
+      _writer.Clear();
+      _writer.WriteOperation(RagonOperation.REPLICATE_ENTITY_STATE);
+      _writer.WriteUShort(entities);
+
+      foreach (var entity in _entitiesDirtySet)
+        entity.State.Write(_writer);
+
+      _entitiesDirtySet.Clear();
+
+      var sendData = _writer.ToArray();
+      foreach (var roomPlayer in ReadyPlayersList)
+        roomPlayer.Connection.UnreliableChannel.Send(sendData);
+    }
+  }
+
+  public void AddPlayer(RoomPlayer player)
+  {
+    if (Players.Count == 0)
+      Owner = player;
+
+    player.Attach(this);
+
+    PlayerList.Add(player);
+    Players.Add(player.Connection.Id, player);
+  }
+
+  public void RemovePlayer(RoomPlayer roomPlayer)
+  {
+    if (Players.Remove(roomPlayer.Connection.Id, out var player))
+    {
+      PlayerList.Remove(player);
+
+      {
+        _writer.Clear();
+        _writer.WriteOperation(RagonOperation.PLAYER_LEAVED);
+        _writer.WriteString(player.Id);
+
+        var entitiesToDelete = player.Entities.DynamicList;
+        _writer.WriteUShort((ushort) entitiesToDelete.Count);
+        foreach (var entity in entitiesToDelete)
+        {
+          _writer.WriteUShort(entity.Id);
+          EntityList.Remove(entity);
+        }
+
+        var sendData = _writer.ToArray();
+        Broadcast(sendData);
+      }
+      
+      if (roomPlayer.Connection.Id == Owner.Connection.Id && PlayerList.Count > 0)
+      {
+        var nextOwner = PlayerList[0];
+        
+        Owner = nextOwner;
+        
+        var entitiesToUpdate =  roomPlayer.Entities.StaticList;
+        
+        _writer.Clear();
+        _writer.WriteOperation(RagonOperation.OWNERSHIP_CHANGED);
+        _writer.WriteString(Owner.Id);
+        _writer.WriteUShort((ushort) entitiesToUpdate.Count);
+      
+        foreach (var entity in entitiesToUpdate)
+        {
+          _writer.WriteUShort(entity.Id);
+        
+          entity.SetOwner(nextOwner);
+          nextOwner.Entities.Add(entity);
+        }
+
+        var sendData = _writer.ToArray();
+        Broadcast(sendData);
+      }
+    }
+  }
+
+  public void UpdateReadyPlayerList()
+  {
+    ReadyPlayersList = PlayerList.Where(p => p.IsLoaded).ToList();
+  }
+
+  public void Track(Entity entity)
+  {
+    _entitiesDirtySet.Add(entity);
+  }
+
+  public void Broadcast(byte[] data)
+  {
+    foreach (var readyPlayer in ReadyPlayersList)
+      readyPlayer.Connection.ReliableChannel.Send(data);
+  }
+}

Ragon.Core/Game/RoomInformation.cs

@@ -0,0 +1,13 @@
+namespace Ragon.Core.Game;
+
+public class RoomInformation
+{
+  public string Map { get; set; }
+  public int Min { get; set; }
+  public int Max { get; set; }
+
+  public override string ToString()
+  {
+    return $"Map: {Map} Count: {Min}/{Max}";
+  }
+}

Ragon.Core/Game/RoomPlayer.cs

@@ -0,0 +1,36 @@
+using Ragon.Server;
+
+namespace Ragon.Core.Game;
+
+public class RoomPlayer
+{
+  public INetworkConnection Connection { get; }
+  public string Id { get; }
+  public string Name { get; }
+  public bool IsLoaded { get; private set; }
+  public Room Room { get; private set; }
+  public EntityList Entities { get; private set; }
+  
+  public RoomPlayer(INetworkConnection connection, string id, string name)
+  {
+    Id = id;
+    Name = name;
+    Connection = connection;
+    Entities = new EntityList();
+  }
+
+  public void Attach(Room room)
+  {
+    Room = room;
+  }
+
+  public void Detach()
+  {
+    Room = null!;
+  }
+
+  public void SetReady()
+  {
+    IsLoaded = true;
+  }
+}

Ragon.Core/HandlerRegistry.cs

@@ -0,0 +1,109 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Handlers;
+
+namespace Ragon.Core;
+
+public sealed class HandlerRegistry
+{
+  private IHandler _entityEventHandler;
+  private IHandler _entityCreateHandler;
+  private IHandler _entityDestroyHandler;
+  private IHandler _entityStateHandler;
+  private IHandler _sceneLoadedHandler;
+
+  private IHandler _authorizationHandler;
+  private IHandler _joinOrCreateHandler;
+  private IHandler _createHandler;
+  private IHandler _joinHandler;
+  private IHandler _leaveHandler;
+
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  private RagonSerializer _reader;
+  private RagonSerializer _writer;
+
+  public HandlerRegistry()
+  {
+    _reader = new RagonSerializer(2048);
+    _writer = new RagonSerializer(2048);
+
+    _authorizationHandler = new AuthHandler();
+    _joinOrCreateHandler = new JoinOrCreateHandler();
+    _sceneLoadedHandler = new SceneLoadedHandler();
+    _createHandler = new CreateHandler();
+    _joinHandler = new JoinHandler();
+    _leaveHandler = new LeaveHandler();
+
+    _entityEventHandler = new EntityEventHandler();
+    _entityCreateHandler = new EntityCreateHandler();
+    _entityDestroyHandler = new EntityDestroyHandler();
+    _entityStateHandler = new EntityStateHandler();
+  }
+
+  public void Handle(PlayerContext context, byte[] data)
+  {
+    _writer.Clear();
+    _reader.Clear();
+    _reader.FromArray(data);
+
+    var operation = _reader.ReadOperation();
+    switch (operation)
+    {
+      case RagonOperation.REPLICATE_ENTITY_EVENT:
+      {
+        if (context.RoomPlayer != null)
+          _entityEventHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.REPLICATE_ENTITY_STATE:
+      {
+        if (context.RoomPlayer != null)
+          _entityStateHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.CREATE_ENTITY:
+      {
+        if (context.RoomPlayer != null)
+          _entityCreateHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.DESTROY_ENTITY:
+      {
+        if (context.RoomPlayer != null)
+          _entityDestroyHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.SCENE_LOADED:
+      {
+        if (context.RoomPlayer != null)
+          _sceneLoadedHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.JOIN_OR_CREATE_ROOM:
+      {
+        _joinOrCreateHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.CREATE_ROOM:
+      {
+        _createHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.JOIN_ROOM:
+      {
+        _joinHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.LEAVE_ROOM:
+      {
+        _leaveHandler.Handle(context, _reader, _writer);
+        break;
+      }
+      case RagonOperation.AUTHORIZE:
+      {
+        _authorizationHandler.Handle(context, _reader, _writer);
+        break;
+      }
+    }
+  }
+}

Ragon.Core/Handlers/Abstract/IHandler.cs

@@ -0,0 +1,8 @@
+using Ragon.Common;
+
+namespace Ragon.Core;
+
+public interface IHandler
+{
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer);
+}

Ragon.Core/Handlers/AuthHandler.cs

@@ -0,0 +1,39 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Lobby;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class AuthHandler: IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    if (context.LobbyPlayer.Status == LobbyPlayerStatus.Authorized)
+    {
+      _logger.Warn("Player already authorized");    
+      return;
+    }
+    
+    var key = reader.ReadString();
+    var playerName = reader.ReadString();
+    var additionalData = reader.ReadData(reader.Size);
+
+    context.LobbyPlayer.Name = playerName;
+    context.LobbyPlayer.AdditionalData = additionalData.ToArray();
+    context.LobbyPlayer.Status = LobbyPlayerStatus.Authorized;
+
+    var playerId = context.LobbyPlayer.Id;
+    
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.AUTHORIZED_SUCCESS);
+    writer.WriteString(playerId);
+    writer.WriteString(playerName);
+    
+    var sendData = writer.ToArray();
+    context.Connection.ReliableChannel.Send(sendData);
+    
+    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} authorized");
+  }
+}

Ragon.Core/Handlers/EntityCreateHandler.cs

@@ -0,0 +1,32 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Game;
+
+
+namespace Ragon.Core.Handlers;
+
+public sealed class EntityCreateHandler: IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    var entityType = reader.ReadUShort();
+    var eventAuthority = (RagonAuthority) reader.ReadByte();
+    var propertiesCount = reader.ReadUShort();
+          
+    var entity = new Entity(context.RoomPlayer, entityType, 0, eventAuthority);
+    for (var i = 0; i < propertiesCount; i++)
+    {
+      var propertyType = reader.ReadBool();
+      var propertySize = reader.ReadUShort();
+      entity.State.AddProperty(new EntityStateProperty(propertySize, propertyType));
+    }
+    
+    var entityPayload = reader.ReadData(reader.Size);
+    entity.SetPayload(entityPayload.ToArray());
+    
+    context.Room.AttachEntity(context.RoomPlayer, entity);
+    
+    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} created entity {entity.Id}:{entity.Type}");
+  }
+}

Ragon.Core/Handlers/EntityDestroyHandler.cs

@@ -0,0 +1,21 @@
+using NLog;
+using Ragon.Common;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class EntityDestroyHandler: IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    var entityId = reader.ReadUShort();
+    if (context.Room.Entities.TryGetValue(entityId, out var entity))
+    {
+      var player = context.RoomPlayer;
+      var payload = reader.ReadData(reader.Size);
+      
+      context.Room.DetachEntity(player, entity, Array.Empty<byte>());
+      _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} destoyed entity {entity.Id}");
+    }
+  }
+}

Ragon.Core/Handlers/EntityEventHandler.cs

@@ -0,0 +1,47 @@
+using NLog;
+using Ragon.Common;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class EntityEventHandler: IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    var player = context.RoomPlayer;
+    var room = context.Room;
+    var entityId = reader.ReadUShort();
+    
+    if (!room.Entities.TryGetValue(entityId, out var ent))
+    {
+      _logger.Warn($"Entity not found for event with Id {entityId}");
+      return;
+    }
+    
+    var eventId = reader.ReadUShort();
+    var eventMode = (RagonReplicationMode) reader.ReadByte();
+    var targetMode = (RagonTarget) reader.ReadByte();
+    var payloadData = reader.ReadData(reader.Size);
+    var targetPlayerPeerId = reader.ReadUShort();
+    
+    if (targetMode == RagonTarget.Player && context.Room.Players.TryGetValue(targetPlayerPeerId, out var targetPlayer)) 
+    {
+      Span<byte> payloadRaw = stackalloc byte[payloadData.Length];
+      ReadOnlySpan<byte> payload = payloadRaw;
+      payloadData.CopyTo(payloadRaw);
+
+      _logger.Trace($"Event {eventId} Payload: {payloadData.Length} to {targetMode}");
+      ent.ReplicateEvent(player, eventId, payload, eventMode, targetPlayer);
+    }
+    else
+    {
+      Span<byte> payloadRaw = stackalloc byte[payloadData.Length];
+      ReadOnlySpan<byte> payload = payloadRaw;
+      payloadData.CopyTo(payloadRaw);
+      
+      _logger.Trace($"Event {eventId} Payload: {payloadData.Length} to {targetMode}");
+      ent.ReplicateEvent(player, eventId, payload, eventMode, targetMode);
+    }
+  }
+}

Ragon.Core/Handlers/EntityStateHandler.cs

@@ -0,0 +1,28 @@
+using NLog;
+using Ragon.Common;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class EntityStateHandler: IHandler
+{
+  private ILogger _logger = LogManager.GetCurrentClassLogger();
+  
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    var room = context.Room;
+    var entitiesCount = reader.ReadUShort();
+    for (var entityIndex = 0; entityIndex < entitiesCount; entityIndex++)
+    {
+      var entityId = reader.ReadUShort();
+      if (room.Entities.TryGetValue(entityId, out var entity))
+      {
+        entity.State.Read(reader);
+        room.Track(entity);
+      }
+      else
+      {
+        _logger.Error($"Entity with Id {entityId} not found, replication interrupted");
+      }
+    }
+  }
+}

Ragon.Core/Handlers/RoomCreateHandler.cs

@@ -0,0 +1,82 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Game;
+using Ragon.Core.Lobby;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class CreateHandler: IHandler
+{
+  private RagonRoomParameters _roomParameters = new();
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    if (context.LobbyPlayer.Status == LobbyPlayerStatus.Unauthorized)
+    {
+      _logger.Warn($"Player {context.Connection.Id} not authorized for this request");
+      return;
+    }
+
+    var custom = reader.ReadBool();
+    var roomId = Guid.NewGuid().ToString();
+    
+    if (custom)
+    {
+      roomId = reader.ReadString();
+      if (context.Lobby.FindRoomById(roomId, out _))
+      { 
+        writer.Clear();
+        writer.WriteOperation(RagonOperation.JOIN_FAILED);
+        writer.WriteString($"Room with id {roomId} already exists");
+            
+        var sendData = writer.ToArray();
+        context.Connection.ReliableChannel.Send(sendData);
+        
+        _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} join failed to room {roomId}, room already exist");
+        return;        
+      }
+    }
+    
+    _roomParameters.Deserialize(reader);
+    
+    var information = new RoomInformation()
+    {
+        Map = _roomParameters.Map,
+        Max = _roomParameters.Max,
+        Min = _roomParameters.Min,
+    };
+
+    var lobbyPlayer = context.LobbyPlayer;
+    var roomPlayer = new RoomPlayer(lobbyPlayer.Connection, lobbyPlayer.Id, lobbyPlayer.Name);
+    
+    var room = new Room(roomId, information, new PluginBase());
+    room.AddPlayer(roomPlayer);
+
+    context.Room?.RemovePlayer(context.RoomPlayer);
+    context.Room = room;
+    context.RoomPlayer = roomPlayer;
+    context.Lobby.Persist(room);
+    
+    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} create room {room.Id} {information}");
+    
+    JoinSuccess(roomPlayer, room, writer);
+    
+    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} joined to room {room.Id}");
+  }
+  
+  private void JoinSuccess(RoomPlayer player, Room room, RagonSerializer writer)
+  {
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.JOIN_SUCCESS);
+    writer.WriteString(room.Id);
+    writer.WriteString(player.Id);
+    writer.WriteString(room.Owner.Id);
+    writer.WriteUShort((ushort) room.Info.Min);
+    writer.WriteUShort((ushort) room.Info.Max);
+    writer.WriteString(room.Info.Map);
+
+    var sendData = writer.ToArray();
+    player.Connection.ReliableChannel.Send(sendData);
+  }
+}

Ragon.Core/Handlers/RoomJoinHandler.cs

@@ -0,0 +1,62 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Game;
+using Ragon.Core.Lobby;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class JoinHandler : IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    var roomId = reader.ReadString();
+    var lobbyPlayer = context.LobbyPlayer;
+
+    if (!context.Lobby.FindRoomById(roomId, out var existsRoom))
+    {
+      JoinFailed(lobbyPlayer, writer);
+      
+      _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} failed to join room {roomId}");
+      return;
+    }
+
+    var roomPlayer = new RoomPlayer(lobbyPlayer.Connection, lobbyPlayer.Id, lobbyPlayer.Name);
+
+    context.Room?.RemovePlayer(context.RoomPlayer);
+    context.Room = existsRoom;
+    context.RoomPlayer = roomPlayer;
+
+    existsRoom.AddPlayer(roomPlayer);
+
+    JoinSuccess(roomPlayer, existsRoom, writer);
+    
+    _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} joined to {existsRoom.Id}");
+  }
+
+  private void JoinSuccess(RoomPlayer player, Room room, RagonSerializer writer)
+  {
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.JOIN_SUCCESS);
+    writer.WriteString(room.Id);
+    writer.WriteString(player.Id);
+    writer.WriteString(room.Owner.Id);
+    writer.WriteUShort((ushort) room.Info.Min);
+    writer.WriteUShort((ushort) room.Info.Max);
+    writer.WriteString(room.Info.Map);
+
+    var sendData = writer.ToArray();
+    player.Connection.ReliableChannel.Send(sendData);
+  }
+
+  private void JoinFailed(LobbyPlayer player, RagonSerializer writer)
+  {
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.JOIN_FAILED);
+    writer.WriteString($"Room not exists");
+
+    var sendData = writer.ToArray();
+    player.Connection.ReliableChannel.Send(sendData);
+  }
+}

Ragon.Core/Handlers/RoomJoinOrCreateHandler.cs

@@ -0,0 +1,79 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Game;
+using Ragon.Core.Lobby;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class JoinOrCreateHandler : IHandler
+{
+  private RagonRoomParameters _roomParameters = new();
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    if (context.LobbyPlayer.Status == LobbyPlayerStatus.Unauthorized)
+    {
+      _logger.Warn("Player not authorized for this request");
+      return;
+    }
+
+    var roomId = Guid.NewGuid().ToString();
+    var lobbyPlayer = context.LobbyPlayer;
+    
+    _roomParameters.Deserialize(reader);
+
+    if (context.Lobby.FindRoomByMap(_roomParameters.Map, out var existsRoom))
+    {
+      var roomPlayer = new RoomPlayer(lobbyPlayer.Connection, lobbyPlayer.Id, lobbyPlayer.Name);
+      
+      context.Room?.RemovePlayer(context.RoomPlayer);
+      context.Room = existsRoom;
+      context.RoomPlayer = roomPlayer;
+      
+      existsRoom.AddPlayer(roomPlayer);
+      
+      JoinSuccess(roomPlayer, existsRoom, writer);
+    }
+    else
+    {
+      var information = new RoomInformation()
+      {
+        Map = _roomParameters.Map,
+        Max = _roomParameters.Max,
+        Min = _roomParameters.Min,
+      };
+
+      var room = new Room(roomId, information, new PluginBase());
+      context.Lobby.Persist(room);
+      
+      var roomPlayer = new RoomPlayer(lobbyPlayer.Connection, lobbyPlayer.Id, lobbyPlayer.Name);
+      room.AddPlayer(roomPlayer);
+      
+      context.Room?.RemovePlayer(context.RoomPlayer);
+      context.Room = room;
+      context.RoomPlayer = roomPlayer;
+      
+      _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} create room {room.Id} {information}");
+
+      JoinSuccess(roomPlayer, room, writer);
+    }
+  }
+
+  private void JoinSuccess(RoomPlayer player, Room room, RagonSerializer writer)
+  {
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.JOIN_SUCCESS);
+    writer.WriteString(room.Id);
+    writer.WriteString(player.Id);
+    writer.WriteString(room.Owner.Id);
+    writer.WriteUShort((ushort) room.Info.Min);
+    writer.WriteUShort((ushort) room.Info.Max);
+    writer.WriteString(room.Info.Map);
+
+    var sendData = writer.ToArray();
+    player.Connection.ReliableChannel.Send(sendData);
+    
+    _logger.Trace($"Joined to room {room.Id}");
+  }
+}

Ragon.Core/Handlers/RoomLeaveHandler.cs

@@ -0,0 +1,19 @@
+using NLog;
+using Ragon.Common;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class LeaveHandler: IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    var room = context.Room;
+    var roomPlayer = context.RoomPlayer;
+    if (room != null)
+    { 
+      context.Room?.RemovePlayer(roomPlayer);
+      _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} leaved from {room.Id}");
+    }
+  }
+}

Ragon.Core/Handlers/SceneLoadedHandler.cs

@@ -0,0 +1,123 @@
+using NLog;
+using Ragon.Common;
+using Ragon.Core.Game;
+using Ragon.Core.Lobby;
+
+namespace Ragon.Core.Handlers;
+
+public sealed class SceneLoadedHandler : IHandler
+{
+  private Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  public void Handle(PlayerContext context, RagonSerializer reader, RagonSerializer writer)
+  {
+    if (context.LobbyPlayer.Status == LobbyPlayerStatus.Unauthorized)
+      return;
+
+    var owner = context.Room.Owner;
+    var player = context.RoomPlayer;
+    var room = context.Room;
+
+    if (player == owner)
+    {
+      var statics = reader.ReadUShort();
+      for (var staticIndex = 0; staticIndex < statics; staticIndex++)
+      {
+        var entityType = reader.ReadUShort();
+        var eventAuthority = (RagonAuthority) reader.ReadByte();
+        var staticId = reader.ReadUShort();
+        var propertiesCount = reader.ReadUShort();
+      
+        var entity = new Entity(player, entityType, staticId, eventAuthority);
+        for (var propertyIndex = 0; propertyIndex < propertiesCount; propertyIndex++)
+        {
+          var propertyType = reader.ReadBool();
+          var propertySize = reader.ReadUShort();
+          entity.State.AddProperty(new EntityStateProperty(propertySize, propertyType));
+        }
+        
+        room.AttachEntity(player, entity);
+      }
+
+      _logger.Trace($"Player {context.Connection.Id}|{context.LobbyPlayer.Name} loaded with {statics} scene entities");
+      
+      room.WaitPlayersList.Add(player);
+
+      foreach (var roomPlayer in room.WaitPlayersList)
+      {
+        DispatchPlayerJoinExcludePlayer(room, roomPlayer, writer);
+        
+        roomPlayer.SetReady();
+      }
+      
+      room.UpdateReadyPlayerList();
+      
+      DispatchSnapshot(room, room.WaitPlayersList, writer);
+      
+      room.WaitPlayersList.Clear();
+    }
+    else if (owner.IsLoaded)
+    {
+      player.SetReady();
+      
+      DispatchPlayerJoinExcludePlayer(room, player, writer);
+      
+      room.UpdateReadyPlayerList();
+      
+      DispatchSnapshot(room, new List<RoomPlayer>() { player }, writer);
+
+      foreach (var entity in room.EntityList)
+        entity.RestoreBufferedEvents(player, writer);
+    }
+    else
+    {
+      _logger.Trace($"Player {player.Connection.Id}|{context.LobbyPlayer.Name} waiting owner of room");
+      room.WaitPlayersList.Add(player);
+    }
+  }
+
+  private void DispatchPlayerJoinExcludePlayer(Room room, RoomPlayer roomPlayer, RagonSerializer writer)
+  {
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.PLAYER_JOINED);
+    writer.WriteUShort(roomPlayer.Connection.Id);
+    writer.WriteString(roomPlayer.Id);
+    writer.WriteString(roomPlayer.Name);
+    
+    var sendData = writer.ToArray();
+    foreach (var awaiter in room.ReadyPlayersList)
+    {
+      if (awaiter != roomPlayer)
+        awaiter.Connection.ReliableChannel.Send(sendData);
+    }
+  }
+
+  private void DispatchSnapshot(Room room, List<RoomPlayer> receviersList, RagonSerializer writer)
+  {
+    writer.Clear();
+    writer.WriteOperation(RagonOperation.SNAPSHOT);
+    writer.WriteUShort((ushort) room.ReadyPlayersList.Count);
+    foreach (var roomPlayer in room.ReadyPlayersList)
+    {
+      writer.WriteUShort(roomPlayer.Connection.Id);
+      writer.WriteString(roomPlayer.Id);
+      writer.WriteString(roomPlayer.Name);
+    }
+
+    var dynamicEntities = room.DynamicEntitiesList;
+    var dynamicEntitiesCount = (ushort) dynamicEntities.Count;
+    writer.WriteUShort(dynamicEntitiesCount);
+    foreach (var entity in dynamicEntities)
+      entity.State.Snapshot(writer);
+
+    var staticEntities = room.StaticEntitiesList;
+    var staticEntitiesCount = (ushort) staticEntities.Count;
+    writer.WriteUShort(staticEntitiesCount);
+    foreach (var entity in staticEntities)
+      entity.State.Snapshot(writer);
+
+    var sendData = writer.ToArray();
+    foreach (var player in receviersList)
+      player.Connection.ReliableChannel.Send(sendData);
+  }
+}

Ragon.Core/Lobby/Abstract/ILobby.cs

@@ -0,0 +1,11 @@
+using Ragon.Core.Game;
+
+namespace Ragon.Core.Lobby;
+
+public interface ILobby
+{
+  public bool FindRoomById(string roomId, out Room room);
+  public bool FindRoomByMap(string map, out Room room);
+  public void Persist(Room room);
+  public void Remove(Room room);
+}

Ragon.Core/Lobby/LobbyInMemory.cs

@@ -0,0 +1,56 @@
+using System.Collections.Generic;
+using NLog;
+using Ragon.Core.Game;
+
+namespace Ragon.Core.Lobby;
+
+public class LobbyInMemory: ILobby
+{
+  private readonly List<Room> _rooms = new();
+  private readonly Logger _logger = LogManager.GetCurrentClassLogger();
+  
+  public bool FindRoomById(string roomId, out Room room)
+  {
+    foreach (var existRoom in _rooms)
+    {
+      var info = existRoom.Info;
+      if (existRoom.Id == roomId && info.Min < info.Max)
+      {
+        room = existRoom;
+        return true;
+      }
+    }
+
+    room = null;
+    return false;
+  }
+
+  public bool FindRoomByMap(string map, out Room room)
+  {
+    foreach (var existRoom in _rooms)
+    {
+      var info = existRoom.Info;
+      if (info.Map == map && existRoom.Players.Count < info.Max)
+      {
+        room = existRoom;
+        return true;
+      }
+    }
+
+    room = null;
+    return false;
+  }
+
+  public void Persist(Room room)
+  {
+    _rooms.Add(room);
+
+    foreach (var r in _rooms)
+      _logger.Trace($"{r.Id} {r.Info}");
+  }
+
+  public void Remove(Room room)
+  {
+    _rooms.Remove(room);
+  }
+}

Ragon.Core/Lobby/LobbyPlayer.cs

@@ -0,0 +1,27 @@
+using Ragon.Server;
+
+namespace Ragon.Core.Lobby;
+
+public enum LobbyPlayerStatus
+{
+  Unauthorized,
+  Authorized,
+}
+
+public class LobbyPlayer
+{
+  public string Id { get; private set; }
+  public string Name { get; set; }
+  public byte[] AdditionalData { get; set; }
+  public LobbyPlayerStatus Status { get; set; }
+  public INetworkConnection Connection { get; private set; }
+  
+  public LobbyPlayer(INetworkConnection connection)
+  {
+    Id = Guid.NewGuid().ToString();
+    Connection = connection;
+    Status = LobbyPlayerStatus.Unauthorized;
+    Name = "None";
+    AdditionalData = Array.Empty<byte>();
+  }
+}

Ragon.Core/PlayerContext.cs

@@ -0,0 +1,28 @@
+using NLog;
+using Ragon.Core.Game;
+using Ragon.Core.Lobby;
+using Ragon.Core.Time;
+using Ragon.Server;
+
+namespace Ragon.Core;
+
+public class PlayerContext: IDisposable
+{
+  public INetworkConnection Connection { get; }
+  public Scheduler Scheduler;
+  public ILobby Lobby { get; set; }
+  public LobbyPlayer LobbyPlayer { private set; get; }
+  public Room? Room { get; set; }
+  public RoomPlayer? RoomPlayer { get; set; }
+
+  public PlayerContext(INetworkConnection conn, LobbyPlayer player)
+  {
+    Connection = conn;
+    LobbyPlayer = player;
+  }
+
+  public void Dispose()
+  {
+    RoomPlayer?.Room.RemovePlayer(RoomPlayer);
+  }
+}

Ragon.Core/Ragon.Core.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net6.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Newtonsoft.Json" Version="13.0.2-beta2" />
+      <PackageReference Include="NLog" Version="5.0.5" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Ragon.Protocol\Ragon.Protocol.csproj" />
+      <ProjectReference Include="..\Ragon.Server.ENet\Ragon.Server.ENet.csproj" />
+      <ProjectReference Include="..\Ragon.Server.WebSockets\Ragon.Server.WebSockets.csproj" />
+      <ProjectReference Include="..\Ragon.Server\Ragon.Server.csproj" />
+    </ItemGroup>
+
+</Project>

Ragon.Core/Time/IScheduleTask.cs

@@ -0,0 +1,6 @@
+namespace Ragon.Core.Time;
+
+public interface IScheduleTask
+{
+    public void Tick();
+}

Ragon.Core/Time/Scheduler.cs

@@ -0,0 +1,27 @@
+namespace Ragon.Core.Time;
+
+public class Scheduler
+{
+  private List<IScheduleTask> _tasks;
+
+  public Scheduler()
+  {
+    _tasks = new List<IScheduleTask>(35);
+  }
+
+  public void Add(IScheduleTask task)
+  {
+    _tasks.Add(task);
+  }
+
+  public void Remove(IScheduleTask task)
+  {
+    _tasks.Remove(task);
+  }
+
+  public void Tick()
+  {
+    foreach (var task in _tasks)
+      task.Tick();
+  }
+}