98 lines
3.5 KiB
C#
98 lines
3.5 KiB
C#
using Lidgren.Network;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Barotrauma.Networking
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{
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abstract class NetEntityEventManager
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{
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const int MaxEventsPerWrite = 255;
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public UInt32 LastReceivedEntityEventID
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{
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get { return lastReceivedEntityEventID; }
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}
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private UInt32 lastReceivedEntityEventID;
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/// <summary>
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/// Write the events to the outgoing message. The recipient parameter is only needed for ServerEntityEventManager
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/// </summary>
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protected void Write(NetOutgoingMessage msg, List<NetEntityEvent> eventsToSync, Client recipient = null)
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{
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//too many events for one packet
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if (eventsToSync.Count > MaxEventsPerWrite)
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{
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eventsToSync.RemoveRange(MaxEventsPerWrite, eventsToSync.Count - MaxEventsPerWrite);
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}
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msg.Write((byte)ServerNetObject.ENTITY_STATE);
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msg.Write(eventsToSync[0].ID);
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msg.Write((byte)eventsToSync.Count);
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foreach (NetEntityEvent e in eventsToSync)
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{
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//write into a temporary buffer so we can write the length before the actual data
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NetBuffer tempBuffer = new NetBuffer();
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WriteEvent(tempBuffer, e, recipient);
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tempBuffer.WritePadBits();
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Debug.Assert(
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tempBuffer.LengthBytes < 256,
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"Maximum EntityEvent size exceeded when serializing \""+e.Entity+"\"!");
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msg.Write((UInt16)e.Entity.ID);
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msg.Write((byte)tempBuffer.LengthBytes);
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msg.Write(tempBuffer);
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}
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}
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/// <summary>
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/// Read the events from the message, ignoring ones we've already received
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/// </summary>
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public void Read(NetIncomingMessage msg, float sendingTime)
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{
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UInt32 firstEventID = msg.ReadUInt32();
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byte eventCount = msg.ReadByte();
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for (int i = 0; i < eventCount; i++)
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{
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UInt32 thisEventID = firstEventID + (UInt32)i;
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UInt16 entityID = msg.ReadUInt16();
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byte msgLength = msg.ReadByte();
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INetSerializable entity = Entity.FindEntityByID(entityID) as INetSerializable;
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//skip the event if we've already received it or if the entity isn't found
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if (thisEventID != lastReceivedEntityEventID+1 || entity == null)
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{
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DebugConsole.NewMessage("received msg "+thisEventID, Microsoft.Xna.Framework.Color.Red);
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msg.Position += msgLength * 8;
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}
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else
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{
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DebugConsole.NewMessage("received msg "+thisEventID, Microsoft.Xna.Framework.Color.Green);
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ReadEvent(msg, entity, sendingTime);
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lastReceivedEntityEventID = thisEventID;
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}
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msg.ReadPadBits();
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}
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}
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protected virtual void WriteEvent(NetBuffer buffer, NetEntityEvent entityEvent, Client recipient = null)
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{
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throw new NotImplementedException();
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}
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protected virtual void ReadEvent(NetIncomingMessage buffer, INetSerializable entity, float sendingTime, Client sender = null)
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{
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throw new NotImplementedException();
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}
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}
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}
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