project-meteor-server/FFXIVClassic Lobby Server/packets/send/WorldListPacket.cs

124 lines
4.6 KiB
C#

/*
===========================================================================
Copyright (C) 2015-2019 Project Meteor Dev Team
This file is part of Project Meteor Server.
Project Meteor Server is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Project Meteor Server is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with Project Meteor Server. If not, see <https:www.gnu.org/licenses/>.
===========================================================================
*/
using FFXIVClassic.Common;
using FFXIVClassic_Lobby_Server.dataobjects;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace FFXIVClassic_Lobby_Server.packets
{
class WorldListPacket
{
public const ushort OPCODE = 0x15;
public const ushort MAXPERPACKET = 6;
private UInt64 sequence;
private List<World> worldList;
public WorldListPacket(UInt64 sequence, List<World> serverList)
{
this.sequence = sequence;
this.worldList = serverList;
}
public List<SubPacket> BuildPackets()
{
List<SubPacket> subPackets = new List<SubPacket>();
int serverCount = 0;
int totalCount = 0;
MemoryStream memStream = null;
BinaryWriter binWriter = null;
foreach (World world in worldList)
{
if (totalCount == 0 || serverCount % MAXPERPACKET == 0)
{
memStream = new MemoryStream(0x210);
binWriter = new BinaryWriter(memStream);
//Write List Info
binWriter.Write((UInt64)sequence);
byte listTracker = (byte)((MAXPERPACKET * 2) * subPackets.Count);
binWriter.Write(worldList.Count - totalCount <= MAXPERPACKET ? (byte)(listTracker + 1) : (byte)(listTracker));
binWriter.Write(worldList.Count - totalCount <= MAXPERPACKET ? (UInt32)(worldList.Count - totalCount) : (UInt32)MAXPERPACKET);
binWriter.Write((byte)0);
binWriter.Write((UInt16)0);
}
//Write Entries
binWriter.Write((ushort)world.id);
binWriter.Write((ushort)world.listPosition);
binWriter.Write((uint)world.population);
binWriter.Write((UInt64)0);
binWriter.Write(Encoding.ASCII.GetBytes(world.name.PadRight(64, '\0')));
serverCount++;
totalCount++;
//Send this chunk of world list
if (serverCount >= MAXPERPACKET)
{
byte[] data = memStream.GetBuffer();
binWriter.Dispose();
memStream.Dispose();
SubPacket subpacket = new SubPacket(OPCODE, 0xe0006868, data);
subpacket.SetTargetId(0xe0006868);
subPackets.Add(subpacket);
serverCount = 0;
}
}
//If there is anything left that was missed or the list is empty
if (serverCount > 0 || worldList.Count == 0)
{
if (worldList.Count == 0)
{
memStream = new MemoryStream(0x210);
binWriter = new BinaryWriter(memStream);
//Write Empty List Info
binWriter.Write((UInt64)sequence);
byte listTracker = (byte)((MAXPERPACKET * 2) * subPackets.Count);
binWriter.Write(worldList.Count - totalCount <= MAXPERPACKET ? (byte)(listTracker + 1) : (byte)(listTracker));
binWriter.Write((UInt32)0);
binWriter.Write((byte)0);
binWriter.Write((UInt16)0);
}
byte[] data = memStream.GetBuffer();
binWriter.Dispose();
memStream.Dispose();
SubPacket subpacket = new SubPacket(OPCODE, 0xe0006868, data);
subpacket.SetTargetId(0xe0006868);
subPackets.Add(subpacket);
}
return subPackets;
}
}
}