59 lines
1.7 KiB
C#
59 lines
1.7 KiB
C#
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using System.Net.WebSockets;
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using System.Text.Json;
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namespace TanksServer.Interactivity;
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internal sealed class PlayerInfoConnection(
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Player player,
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ILogger logger,
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WebSocket rawSocket
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) : WebsocketServerConnection(logger, new ByteChannelWebSocket(rawSocket, logger, 0)), IDisposable
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{
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private readonly SemaphoreSlim _wantedFrames = new(1);
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private readonly AppSerializerContext _context = new(new JsonSerializerOptions(JsonSerializerDefaults.Web));
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private byte[] _lastMessage = [];
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protected override ValueTask HandleMessageAsync(Memory<byte> buffer)
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{
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var response = GetMessageToSend();
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if (response == null)
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{
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Logger.LogTrace("cannot respond directly, increasing wanted frames");
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_wantedFrames.Release();
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return ValueTask.CompletedTask;
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}
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Logger.LogTrace("responding directly");
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return Socket.SendTextAsync(response);
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}
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public async Task OnGameTickAsync()
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{
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if (!await _wantedFrames.WaitAsync(TimeSpan.Zero))
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return;
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var response = GetMessageToSend();
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if (response == null)
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{
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_wantedFrames.Release();
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return;
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}
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Logger.LogTrace("responding indirectly");
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await Socket.SendTextAsync(response);
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}
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private byte[]? GetMessageToSend()
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{
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var info = new PlayerInfo(player.Name, player.Scores, player.Controls);
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var response = JsonSerializer.SerializeToUtf8Bytes(info, _context.PlayerInfo);
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if (response.SequenceEqual(_lastMessage))
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return null;
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return _lastMessage = response;
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}
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public void Dispose() => _wantedFrames.Dispose();
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}
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