ReboundEmulator/Core/Rooms/GameRooms/Lottso2Room.cs

namespace ReboundEmulator.Core.Rooms.GameRooms
{
    [GameRoom("lottso2")]
    public class Lottso2Room : IGameRoom
    {
        public Task OnGameJoinAsync(Room room, Player player)
        {
            // TODO - implement multiplayer
            return Task.CompletedTask;
        }

        public Task<bool> OnMessageAsync(Room room, Player player, string op, Dictionary<string, string> msg)
        {
            return op switch
            {
                "ext.over" => HandleResults(player, msg),
                _ => Task.FromResult(false),
            };
        }

        private static async Task<bool> HandleResults(Player player, Dictionary<string, string> msg)
        {
            // determine jackpot win
            msg.TryGetValue("gm.won", out var won);
            bool isJackpot = won == "true";

            // Lottso Deluxe is weird and takes a sec to want to take in results
            await Task.Delay(TimeSpan.FromSeconds(8));

            // send ext.rslt
            await player.SendAsync(
                ("msg.op", "ext.rslt"),
                ("tokb", "9999"),
                ("tokn.won", TCPProtocol.ParseInlineMap(msg["tokn.won"])["allt"].ToString()),
                ("spin.rslt", isJackpot ? "2" : "0"),
                ("spin.tokn", isJackpot ? Random.Shared.Next(0, 500).ToString() : "0"),
                ("inst.desc", ""),
                ("jpot", "0"),
                ("pzpm", ""),
                ("bmlt", "1"),
                ("bspo", "0"),
                ("xpup", "0")
            );

            // CDL games require more for the results screen

            await player.SendAsync(
                ("msg.op", "ext.rank"),
                ("rank.ord", "1"), ("rank.nam", "Rookie"), ("rank.pts", "0"),
                ("rank.nord", "2"), ("rank.nnam", "Novice"), ("rank.npts", "100"),
                ("rank.ppts", "0"), ("rank.incr", "0"), ("rank.new", "false")
            );

            await player.SendAsync(
                ("msg.op", "cdl.awar"),
                ("nava", "false"), ("ilvl", "0"),
                ("nbad", "false"), ("badg", "0"),
                ("ainf", "")
            );

            return true;
        }

        public Task OnPlayerJoinedAsync(Room room, Player player) => Task.CompletedTask;

        public Task OnPlayerLeftAsync(Room room, Player player) => Task.CompletedTask;
    }
}