public static void SendMapDetails(this NetState ns, MapItem map)
{
if (ns.CannotSendPackets())
{
return;
}
var writer = new SpanWriter(stackalloc byte[ns.NewCharacterList ? 21 : 19]);
writer.Write((byte)(ns.NewCharacterList ? 0xF5 : 0x90)); // Packet ID
writer.Write(map.Serial);
writer.Write((short)0x139D);
var bounds = map.Bounds;
writer.Write((short)bounds.Start.X);
writer.Write((short)bounds.Start.Y);
writer.Write((short)bounds.End.X);
writer.Write((short)bounds.End.Y);
writer.Write((short)map.Width);
writer.Write((short)map.Height);
if (ns.NewCharacterList)
{
writer.Write((short)(map.Facet?.MapID ?? 0));
}
ns.Send(writer.Span);
}
public static void SendArrow(this NetState ns, byte command, int x, int y, Serial s)
{
if (ns.CannotSendPackets())
{
return;
}
var writer = new SpanWriter(stackalloc byte[10]);
writer.Write((byte)0xBA); // Packet ID
writer.Write(command);
if (ns.HighSeas)
{
writer.Write((short)x);
writer.Write((short)y);
writer.Write(s);
}
else if (command == 1)
{
writer.Write((short)x);
writer.Write((short)y);
}
else
{
writer.Write((short)-1);
writer.Write((short)-1);
}
ns.Send(writer.Span);
}
public static void SendPartyMemberLocations(this NetState ns, Mobile from, Party party)
{
if (ns.CannotSendPackets())
{
return;
}
var count = party?.Members.Count ?? 0;
var maxLength = 9 + (count > 1 ? (count - 1) * 9 : 0);
var writer = new SpanWriter(stackalloc byte[maxLength]);
writer.Write((byte)0xF0); // Packet ID
writer.Seek(2, SeekOrigin.Current);
writer.Write((byte)0x01); // Command
bool sendPacket = false;
for (var i = 0; i < count; i++)
{
var pmi = party !.Members[i];
Mobile mob = pmi?.Mobile;
if (mob?.NetState == null || mob == from)
{
continue;
}
if (Utility.InUpdateRange(from.Location, mob.Location) && from.CanSee(mob))
{
continue;
}
sendPacket = true;
writer.Write(mob.Serial);
writer.Write((short)mob.X);
writer.Write((short)mob.Y);
writer.Write((byte)(mob.Map?.MapID ?? 0));
}
if (!sendPacket)
{
return;
}
writer.Write(0);
writer.WritePacketLength();
ns.Send(writer.Span);
}
public static void SendMapCommand(this NetState ns, MapItem map, int command, int x = 0, int y = 0, bool editable = false)
{
if (ns.CannotSendPackets())
{
return;
}
var writer = new SpanWriter(stackalloc byte[11]);
writer.Write((byte)0x56); // Packet ID
writer.Write(map.Serial);
writer.Write((byte)command);
writer.Write(editable);
writer.Write((short)x);
writer.Write((short)y);
ns.Send(writer.Span);
}
public static void SendExtendedShardStats(
this NetState ns, string name, int age, int clients, int items, int mobiles, int mem
)
{
if (ns.CannotSendPackets())
{
return;
}
var str =
$"ModernUO, Name={name}, Age={age}, Clients={clients}, Items={items}, Chars={mobiles}, Mem={mem}K, Ver=2";
var length = Encoding.UTF8.GetMaxByteCount(str.Length);
Span <byte> span = stackalloc byte[length + 1];
Encoding.UTF8.GetBytes(str, span);
span[^ 1] = 0; // Terminator
public static void SendCorpseEquip(this NetState ns, Mobile beholder, Corpse beheld)
{
if (ns.CannotSendPackets())
{
return;
}
var list = beheld.EquipItems;
var maxLength = 8 + (list.Count + 2) * 5;
var writer = new SpanWriter(stackalloc byte[maxLength]);
writer.Write((byte)0x89);
writer.Seek(2, SeekOrigin.Current);
writer.Write(beheld.Serial);
for (var i = 0; i < list.Count; ++i)
{
var item = list[i];
if (!item.Deleted && beholder.CanSee(item) && item.Parent == beheld)
{
writer.Write((byte)(item.Layer + 1));
writer.Write(item.Serial);
}
}
if (beheld.Hair?.ItemID > 0)
{
writer.Write((byte)(Layer.Hair + 1));
writer.Write(HairInfo.FakeSerial(beheld.Owner.Serial) - 2);
}
if (beheld.FacialHair?.ItemID > 0)
{
writer.Write((byte)(Layer.FacialHair + 1));
writer.Write(FacialHairInfo.FakeSerial(beheld.Owner.Serial) - 2);
}
writer.Write((byte)Layer.Invalid);
writer.WritePacketLength();
ns.Send(writer.Span);
}
public static void SendCompactShardStats(
this NetState ns, uint age, int clients, int items, int mobiles, long mem
)
{
if (ns.CannotSendPackets())
{
return;
}
var writer = new SpanWriter(stackalloc byte[27]);
writer.Write((byte)0x51); // Packet ID
writer.Write((ushort)27); // Length
writer.Write(clients);
writer.Write(items);
writer.Write(mobiles);
writer.Write(age);
writer.Write(mem);
ns.Send(writer.Span);
}
public static void SendBBDisplayBoard(this NetState ns, BaseBulletinBoard board)
{
if (ns.CannotSendPackets())
{
return;
}
var writer = new SpanWriter(stackalloc byte[38]);
writer.Write((byte)0x71); // Packet ID
writer.Write((ushort)38);
writer.Write((byte)0x00); // Command
writer.Write(board.Serial);
var text = board.BoardName ?? "";
var textChars = text.AsSpan(0, Math.Min(text.Length, 30));
Span <byte> textBuffer = stackalloc byte[TextEncoding.UTF8.GetMaxByteCount(textChars.Length)]; // Max 30 * 3 (90 bytes)
// We are ok with the string being cut-off mid character. The alternative is very slow.
var byteLength = Math.Min(29, TextEncoding.UTF8.GetBytes(textChars, textBuffer));
writer.Write(textBuffer[..byteLength]);
public static void SendGuildMemberLocations(this NetState ns, Mobile from, Guild guild, bool sendLocations)
{
if (ns.CannotSendPackets())
{
return;
}
var count = guild?.Members.Count ?? 0;
var maxLength = 9 + (count > 1 ? (count - 1) * (sendLocations ? 10 : 4) : 0);
var writer = new SpanWriter(stackalloc byte[maxLength]);
writer.Write((byte)0xF0); // Packet ID
writer.Seek(2, SeekOrigin.Current);
writer.Write((byte)0x02); // Command
writer.Write(count > 0 && sendLocations);
bool sendPacket = false;
for (var i = 0; i < count; i++)
{
var m = guild !.Members[i];
if (m?.NetState == null || m == from)
{
continue;
}
if (sendLocations && Utility.InUpdateRange(from.Location, m.Location) && from.CanSee(m))
{
continue;
}
sendPacket = true;
writer.Write(m.Serial);
if (sendLocations)
{
writer.Write((short)m.X);
writer.Write((short)m.Y);
writer.Write((byte)(m.Map?.MapID ?? 0));
if (m.Alive)
{
writer.Write((byte)(m.Hits * 100 / Math.Max(m.HitsMax, 1)));
}
else
{
writer.Write((byte)0);
}
}
}
if (!sendPacket)
{
return;
}
writer.Write(0);
writer.WritePacketLength();
ns.Send(writer.Span);
}
public static void SendCorpseContent(this NetState ns, Mobile beholder, Corpse beheld)
{
if (ns.CannotSendPackets())
{
return;
}
var list = beheld.EquipItems;
var hairItemID = beheld.Hair?.ItemID ?? 0;
var facialHairItemID = beheld.FacialHair?.ItemID ?? 0;
var count = list.Count;
if (hairItemID > 0)
{
count++;
}
if (facialHairItemID > 0)
{
count++;
}
var maxLength = 5 + count * (ns.ContainerGridLines ? 20 : 19);
var writer = new SpanWriter(stackalloc byte[maxLength]);
writer.Write((byte)0x3C);
writer.Seek(4, SeekOrigin.Current); // Length and Count
var written = 0;
for (var i = 0; i < list.Count; ++i)
{
var child = list[i];
if (!child.Deleted && child.Parent == beheld && beholder.CanSee(child))
{
writer.Write(child.Serial);
writer.Write((ushort)child.ItemID);
writer.Write((byte)0); // signed, itemID offset
writer.Write((ushort)child.Amount);
writer.Write((short)child.X);
writer.Write((short)child.Y);
if (ns.ContainerGridLines)
{
writer.Write((byte)0); // Grid Location?
}
writer.Write(beheld.Serial);
writer.Write((ushort)child.Hue);
++written;
}
}
if (hairItemID > 0)
{
writer.Write(HairInfo.FakeSerial(beheld.Owner.Serial) - 2);
writer.Write((ushort)hairItemID);
writer.Write((byte)0); // signed, itemID offset
writer.Write((ushort)1);
writer.Write(0); // X/Y
if (ns.ContainerGridLines)
{
writer.Write((byte)0); // Grid Location?
}
writer.Write(beheld.Serial);
writer.Write((ushort)beheld.Hair !.Hue);
++written;
}
if (facialHairItemID > 0)
{
writer.Write(FacialHairInfo.FakeSerial(beheld.Owner.Serial) - 2);
writer.Write((ushort)facialHairItemID);
writer.Write((byte)0); // signed, itemID offset
writer.Write((ushort)1);
writer.Write(0); // X/Y
if (ns.ContainerGridLines)
{
writer.Write((byte)0); // Grid Location?
}
writer.Write(beheld.Serial);
writer.Write((ushort)beheld.FacialHair !.Hue);
++written;
}
writer.Seek(1, SeekOrigin.Begin);
writer.Write((ushort)writer.BytesWritten);
writer.Write((ushort)written);
writer.Seek(0, SeekOrigin.End);
ns.Send(writer.Span);
}
