DemoBot.cs

using Decorator;
using Decorator.Attributes;

using PlayerIOClient;

using System;

namespace demo {

	[Message("say")]
	public class Chat {

		[Position(0), Required]
		public int PlayerId { get; set; }

		[Position(1), Required]
		public string Message { get; set; }
	}

	[Message("updatemeta")]
	public class UpdateMeta {

		[Position(0), Required]
		public string OwnerName { get; set; }

		[Position(1), Required]
		public string Title { get; set; }

		[Position(2), Required]
		public int Plays { get; set; }

		[Position(3), Required]
		public int Favorites { get; set; }

		[Position(4), Required]
		public int Likes { get; set; }
	}

	public class Program {

		private static void Main(string[] args)
			=> new Program().Run(args);

		public Connection Con { get; set; }

		[DeserializedHandler]
		public void OnSay(Chat msg) {
			Console.WriteLine($"Recieved chat: {msg.Message}");
		}

		[DeserializedHandler]
		public void OnUpdateMeta(UpdateMeta updateMeta) {
			Console.WriteLine($"Meta updated: \n" +
				$"Owner: {updateMeta.OwnerName}\n" +
				$"Title: {updateMeta.Title}\n" +
				$"Plays: {updateMeta.Plays}\n" +
				$"Favorites: {updateMeta.Favorites}\n" +
				$"Likes: {updateMeta.Likes}\n");
		}

		public void Run(string[] args) {
			this.Con = PlayerIO
					.QuickConnect
					.SimpleConnect("everybody-edits-su9rn58o40itdbnw69plyw", "guest", "guest", null)

					.Multiplayer
						.CreateJoinRoom("PW", "Everybodyedits240", false, null, null);

			this.Con.OnMessage += (s, m) => {
				if (m.Type == "init")
					this.Con.Send("init2");

				Deserializer<Program>.DeserializeMessageToMethod(this, new BasicMessage(m.Type, m.GetObjects()));
			};

			this.Con.Send("init");

			Console.ReadLine();
		}
	}

	internal static class Helper {

		public static object[] GetObjects(this Message m) {
			var res = new object[m.Count];

			for (var i = 0u; i < m.Count; i++)
				res[(int)i] = m[i];

			return res;
		}
	}
}