10a69bf754
## Breaking Changes
Incoming packet registration signature has changed to:
```cs
delegate* void OnReceiveCallback(NetState state, SpanReader reader, int packetLength);
IncomingPackets.Register(int packetID, int length, bool ingame, OnReceiveCallback onReceive);
```
For example, an incoming packet handler signature would now look like this:
```cs
public static void SomeIncomingPacket(NetState state, SpanReader reader, int packetLength)
{
// Parse the data
}
```
## Summary
Updates the network Pipe class to use a mirrored memory technique. This technique involves mapping the same physical memory to two contiguous virtual memory spaces so the byte buffer appears duplicated. This allows writing to a double-sized array to wrap around without the need for the `CircularBuffer` classes.
In practice this allows us to use `Span<byte>` as if the buffer was a regular array.
### Bug Fixes
- [X] Fixes bad fixed length string parsing
113 lines
3.4 KiB
C#
113 lines
3.4 KiB
C#
/*************************************************************************
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* ModernUO *
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* Copyright 2019-2023 - ModernUO Development Team *
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* Email: hi@modernuo.com *
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* File: IncomingMovementPackets.cs *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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*************************************************************************/
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using System.Buffers;
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namespace Server.Network;
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public static class IncomingMovementPackets
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{
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public static unsafe void Configure()
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{
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IncomingPackets.Register(0x02, 7, true, &MovementReq);
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// Not used by OSI, and interferes with ClassicUO/Razor protocol extensions
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// IncomingPackets.Register(0xF0, 0, true, NewMovementReq);
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// IncomingPackets.Register(0xF1, 9, true, TimeSyncReq);
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}
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public static void NewMovementReq(NetState ns, SpanReader reader)
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{
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var from = ns.Mobile;
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if (from == null)
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{
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return;
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}
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var steps = reader.ReadByte();
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for (int i = 0; i < steps; i++)
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{
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var t1 = reader.ReadUInt64(); // start time?
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var t2 = reader.ReadUInt64(); // end time?
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int seq = reader.ReadByte();
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var dir = (Direction)reader.ReadByte();
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var mode = reader.ReadInt32(); // 1 = walk, 2 = run
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if (mode == 2)
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{
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dir |= Direction.Running;
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}
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// Location
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reader.ReadInt32(); // x
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reader.ReadInt32(); // y
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reader.ReadInt32(); // z
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if (ns.Sequence == 0 && seq != 0 || !from.Move(dir))
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{
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ns.SendMovementRej(seq, from);
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ns.Sequence = 0;
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}
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else
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{
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++seq;
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if (seq == 256)
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{
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seq = 1;
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}
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ns.Sequence = seq;
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}
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}
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}
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public static void TimeSyncReq(NetState ns, SpanReader reader)
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{
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reader.ReadUInt64(); // Client Time?
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ns.SendTimeSyncResponse();
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}
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public static void MovementReq(NetState state, SpanReader reader, int packetLength)
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{
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var from = state.Mobile;
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if (from == null)
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{
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return;
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}
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var dir = (Direction)reader.ReadByte();
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int seq = reader.ReadByte();
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var key = reader.ReadUInt32();
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if (state.Sequence == 0 && seq != 0 || !from.Move(dir))
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{
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state.SendMovementRej(seq, from);
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state.Sequence = 0;
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}
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else
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{
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++seq;
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if (seq == 256)
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{
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seq = 1;
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}
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state.Sequence = seq;
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}
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}
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}
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