ModernUO/Projects/Server/Network/Packets/OutgoingEquipmentPackets.cs

/*************************************************************************
 * ModernUO                                                              *
 * Copyright 2019-2020 - ModernUO Development Team                       *
 * Email: hi@modernuo.com                                                *
 * File: OutgoingEquipmentPackets.cs                                     *
 *                                                                       *
 * This program is free software: you can redistribute it and/or modify  *
 * it under the terms of the GNU General Public License as published by  *
 * the Free Software Foundation, either version 3 of the License, or     *
 * (at your option) any later version.                                   *
 *                                                                       *
 * You should have received a copy of the GNU General Public License     *
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
 *************************************************************************/

using System;
using System.Buffers;
using System.Collections.Generic;

namespace Server.Network
{
    public class EquipInfoAttribute
    {
        public EquipInfoAttribute(int number, int charges = -1)
        {
            Number = number;
            Charges = charges;
        }

        public int Number { get; }

        public int Charges { get; }
    }

    public static class OutgoingEquipmentPackets
    {
        public static void SendDisplayEquipmentInfo(
            this NetState ns,
            Serial serial, int number, string crafterName, bool unidentified, List<EquipInfoAttribute> attrs
        )
        {
            if (ns == null || !ns.GetSendBuffer(out var buffer))
            {
                return;
            }

            crafterName = crafterName.DefaultIfNullOrEmpty("");

            var length = 17 +
                         (crafterName.Length > 0 ? 6 + crafterName.Length : 0) +
                         (unidentified ? 4 : 0) +
                         attrs.Count * 6;

            var writer = new CircularBufferWriter(buffer);
            writer.Write((byte)0xBF); // Packet ID
            writer.Write((ushort)length);
            writer.Write((ushort)0x10); // Subpacket
            writer.Write(serial);
            writer.Write(number);

            if (crafterName.Length > 0)
            {
                writer.Write(-3); // crafted by

                writer.Write((ushort)crafterName.Length);
                writer.WriteAscii(crafterName);
            }

            if (unidentified)
            {
                writer.Write(-4);
            }

            for (var i = 0; i < attrs.Count; ++i)
            {
                var attr = attrs[i];
                writer.Write(attr.Number);
                writer.Write((short)attr.Charges);
            }

            writer.Write(-1);

            ns.Send(ref buffer, writer.Position);
        }

        public static void SendEquipUpdate(this NetState ns, Item item)
        {
            if (ns == null || !ns.GetSendBuffer(out var buffer))
            {
                return;
            }

            Serial parentSerial;

            var parent = item.Parent as Mobile;
            var hue = item.Hue;

            if (parent != null)
            {
                parentSerial = parent.Serial;

                if (parent.SolidHueOverride >= 0)
                {
                    hue = parent.SolidHueOverride;
                }
            }
            else
            {
                Console.WriteLine("Warning: EquipUpdate on item with !(parent is Mobile)");
                parentSerial = Serial.Zero;
            }


            var writer = new CircularBufferWriter(buffer);
            writer.Write((byte)0x2E); // Packet ID
            writer.Write(item.Serial);
            writer.Write((short)item.ItemID);
            writer.Write((ushort)item.Layer);
            writer.Write(parentSerial);
            writer.Write((short)hue);

            ns.Send(ref buffer, writer.Position);
        }
    }
}