public static void SendMapPatches(this NetState ns)
{
if (ns == null || ns.ProtocolChanges >= ProtocolChanges.Version6000)
{
return;
}
int count;
if (ns.HasFlag(ClientFlags.TerMur))
{
count = 6;
}
else if (ns.HasFlag(ClientFlags.Tokuno))
{
count = 5;
}
else if (ns.HasFlag(ClientFlags.Malas))
{
count = 4;
}
else if (ns.HasFlag(ClientFlags.Ilshenar))
{
count = 3;
}
else if (ns.HasFlag(ClientFlags.Trammel))
{
count = 2;
}
else if (ns.HasFlag(ClientFlags.Felucca))
{
count = 1;
}
else
{
return;
}
var writer = new SpanWriter(stackalloc byte[9 + count * 8]);
writer.Write((byte)0xBF); // Packet ID
writer.Seek(2, SeekOrigin.Current);
writer.Write((ushort)0x18); // Subpacket
writer.Write(count);
for (int i = 0; i < count; i++)
{
var map = Map.Maps[i];
writer.Write(map.Tiles.Patch.StaticBlocks);
writer.Write(map.Tiles.Patch.LandBlocks);
}
writer.WritePacketLength();
ns.Send(writer.Span);
}