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using System.Collections.ObjectModel;
using LiteNetLib;
using LiteNetLib.Utils;
namespace OnekoOnline.Net;
class Client
{
public static readonly string UserName = OnekoOnline.Config.GetValue("UserName", "User");
public int Id {get; private set;} = -1;
public bool Connected => NetClient?.ConnectedPeersCount > 0 && Id != -1;
readonly EventBasedNetListener Listener;
readonly NetManager NetClient;
public NetPeer ConnectedServer => NetClient.FirstPeer;
readonly Dictionary<int, ClientUser> users = [];
public ReadOnlyDictionary<int, ClientUser> Users => users.AsReadOnly();
static public Action<ClientUser>? UserConnected;
static public Action<ClientUser>? UserDisconnected;
static public Action<NetDataReader, ClientUser, PacketType>? PacketRecived;
static public Action? ServerDisconnected;
public Client(string ServerAddress, int port, string ServerPassword)
{
if (string.IsNullOrEmpty(ServerAddress)) throw new Exception("Server Address invalid!");
if (string.IsNullOrEmpty(UserName)) throw new Exception("Invalid Username!!");
if (UserName.Length > 40) throw new Exception("Username too long!");
Listener = new();
NetClient = new(Listener);
NetClient.Start();
NetClient.Connect(ServerAddress, port, ServerPassword);
Listener.PeerConnectedEvent += peer => {
Console.WriteLine("Connected to the Server!");
NetDataWriter writer = new();
writer.Put(new PacketInfo(PacketType.UserInfo, Id));
writer.Put(UserName, 40);
writer.PutBytesWithLength(MouseLocal.Instance!.Cursor.Serialize());
writer.Put(OnekoOnline.SpectatorMode);
if (!OnekoOnline.SpectatorMode) {
writer.Put(OnekoLocal.Instance!.Name, 40);
writer.PutBytesWithLength(OnekoLocal.Instance!.SpriteSheet.Serialize());
}
if (writer.Length > 50000) {
peer.Disconnect();
Console.WriteLine("You have too much data to send, try reducing the complexity of your sprites.");
} else {
peer.Send(writer, DeliveryMethod.ReliableUnordered);
}
};
Listener.PeerDisconnectedEvent += (peer, info) => {
ServerDisconnected?.Invoke();
users.Clear();
Console.WriteLine("Server Disconnected! You're offline!");
OnekoOnline.AppTitle = "Oneko Offline";
};
Listener.NetworkReceiveEvent += (fromPeer, reader, channel, DeliveryMethod) => {
if (reader.AvailableBytes < PacketInfo.SizeOf || reader.AvailableBytes > 40000) return;
PacketInfo info = reader.GetPacketInfo();
if (info.Type == PacketType.UserId) {
Id = reader.GetInt();
return;
}
ClientUser? from;
if (!users.TryGetValue(info.FromId, out from)) {
from = new(info.FromId);
users.Add(from.Id, from);
}
if (info.Type == PacketType.Disconnect) {
//Disconnect user that has disconnected
if (from.Username != null) Console.WriteLine($"User {from.Username} left.");
users.Remove(info.FromId);
UserDisconnected?.Invoke(from);
return;
}
else if (info.Type == PacketType.UserInfo) {
from.Username = reader.GetString(40);
from.CursorSprite = reader.GetBytesWithLength();
from.SpectatorMode = reader.GetBool();
if (!from.SpectatorMode) {
from.Nekoname = reader.GetString(40);
from.SpriteSheet = reader.GetBytesWithLength();
Console.WriteLine($"User {from.Username} joined with {from.Nekoname}!");
} else {
Console.WriteLine($"User {from.Username} joined as a Spectator!");
}
from.Initialized = true;
UserConnected?.Invoke(from);
return;
}
if (reader.AvailableBytes > 500) return;
PacketRecived?.Invoke(reader, from, info.Type);
};
}
public void Poll()
{
NetClient.PollEvents();
}
public void Disconnect()
{
NetClient.DisconnectAll();
}
}
class ClientUser(int id) : User(id)
{
public bool SpectatorMode;
public byte[]? SpriteSheet;
public byte[]? CursorSprite;
public string? Username;
public string? Nekoname;
}
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