86 lines
2.0 KiB
C#
86 lines
2.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Net.Sockets;
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using System.Threading;
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using System.Net;
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using System.IO;
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namespace OpenRa.Game
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{
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class Network
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{
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public const int Port = 6543;
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const int netSyncInterval = 40 * 5;
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UdpClient client = new UdpClient(Port);
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int nextSyncTime = 0;
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int currentFrame = 0;
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public int CurrentFrame { get { return currentFrame; } }
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public int RemainingNetSyncTime { get { return Math.Max(0, nextSyncTime - Environment.TickCount); } }
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Queue<Packet> incomingPackets = new Queue<Packet>();
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public Network()
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{
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client.EnableBroadcast = true;
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Thread receiveThread = new Thread(delegate()
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{
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for (; ; )
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{
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IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
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byte[] data = client.Receive(ref sender);
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Packet packet = Packet.FromReceivedData(sender, data);
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lock (this)
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if (currentFrame <= packet.Frame)
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incomingPackets.Enqueue(packet);
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}
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});
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receiveThread.IsBackground = true;
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receiveThread.Start();
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}
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public void Send(byte[] data)
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{
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IPEndPoint destination = new IPEndPoint(IPAddress.Broadcast, Port);
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using(MemoryStream ms = new MemoryStream())
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using (BinaryWriter writer = new BinaryWriter(ms))
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{
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writer.Write(currentFrame);
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writer.Write(data);
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writer.Flush();
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byte[] toSend = ms.ToArray();
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client.Send(toSend, toSend.Length);
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}
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}
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public Queue<Packet> Tick()
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{
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Queue<Packet> toProcess = new Queue<Packet>();
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if (Environment.TickCount > nextSyncTime)
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lock (this)
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{
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while (incomingPackets.Count > 0 && incomingPackets.Peek().Frame <= currentFrame)
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{
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Packet p = incomingPackets.Dequeue();
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if (p.Frame == currentFrame)
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toProcess.Enqueue(p);
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}
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++currentFrame;
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nextSyncTime = Environment.TickCount + netSyncInterval;
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}
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return toProcess;
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}
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}
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}
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