ModernUO/Projects/Scripts/Items/Special/Special Scrolls/SpecialScroll.cs

using Server.Gumps;
using Server.Network;

namespace Server.Items
{
  public abstract class SpecialScroll : Item
  {
    public SpecialScroll(SkillName skill, double value) : base(0x14F0)
    {
      LootType = LootType.Cursed;
      Weight = 1.0;

      Skill = skill;
      Value = value;
    }

    public SpecialScroll(Serial serial) : base(serial)
    {
    }

    #region Old Item Serialization Vars

    /* DO NOT USE! Only used in serialization of special scrolls that originally derived from Item */

    protected bool InheritsItem{ get; private set; }

    #endregion

    public abstract int Message{ get; }
    public virtual int Title => 0;
    public abstract string DefaultTitle{ get; }

    [CommandProperty(AccessLevel.GameMaster)]
    public SkillName Skill{ get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public double Value{ get; set; }

    public virtual string GetNameLocalized() => $"#{AosSkillBonuses.GetLabel(Skill)}";

    public virtual string GetName()
    {
      int index = (int)Skill;
      SkillInfo[] table = SkillInfo.Table;

      if (index >= 0 && index < table.Length)
        return table[index].Name.ToLower();
      return "???";
    }

    public virtual bool CanUse(Mobile from)
    {
      if (Deleted)
        return false;

      if (!IsChildOf(from.Backpack))
      {
        from.SendLocalizedMessage(1042001); // That must be in your pack for you to use it.
        return false;
      }

      return true;
    }

    public virtual void Use(Mobile from)
    {
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (!CanUse(from))
        return;

      from.CloseGump<InternalGump>();
      from.SendGump(new InternalGump(from, this));
    }

    public override void Serialize(GenericWriter writer)
    {
      base.Serialize(writer);

      writer.Write(1); // version

      writer.Write((int)Skill);
      writer.Write(Value);
    }

    public override void Deserialize(GenericReader reader)
    {
      base.Deserialize(reader);

      int version = reader.ReadInt();

      switch (version)
      {
        case 1:
        {
          Skill = (SkillName)reader.ReadInt();
          Value = reader.ReadDouble();
          break;
        }
        case 0:
        {
          InheritsItem = true;

          if (!(this is StatCapScroll))
            Skill = (SkillName)reader.ReadInt();
          else
            Skill = SkillName.Alchemy;

          if (this is ScrollofAlacrity)
            Value = 0.0;
          else if (this is StatCapScroll)
            Value = reader.ReadInt();
          else
            Value = reader.ReadDouble();

          break;
        }
      }
    }

    public class InternalGump : Gump
    {
      private Mobile m_Mobile;
      private SpecialScroll m_Scroll;

      public InternalGump(Mobile mobile, SpecialScroll scroll) : base(25, 50)
      {
        m_Mobile = mobile;
        m_Scroll = scroll;

        AddPage(0);

        AddBackground(25, 10, 420, 200, 5054);

        AddImageTiled(33, 20, 401, 181, 2624);
        AddAlphaRegion(33, 20, 401, 181);

        AddHtmlLocalized(40, 48, 387, 100, m_Scroll.Message, true, true);

        AddHtmlLocalized(125, 148, 200, 20, 1049478, 0xFFFFFF); // Do you wish to use this scroll?

        AddButton(100, 172, 4005, 4007, 1);
        AddHtmlLocalized(135, 172, 120, 20, 1046362, 0xFFFFFF); // Yes

        AddButton(275, 172, 4005, 4007, 0);
        AddHtmlLocalized(310, 172, 120, 20, 1046363, 0xFFFFFF); // No

        if (m_Scroll.Title != 0)
          AddHtmlLocalized(40, 20, 260, 20, m_Scroll.Title, 0xFFFFFF);
        else
          AddHtml(40, 20, 260, 20, m_Scroll.DefaultTitle);

        if (m_Scroll is StatCapScroll)
          AddHtmlLocalized(310, 20, 120, 20, 1038019, 0xFFFFFF); // Power
        else
          AddHtmlLocalized(310, 20, 120, 20, AosSkillBonuses.GetLabel(m_Scroll.Skill), 0xFFFFFF);
      }

      public override void OnResponse(NetState sender, RelayInfo info)
      {
        if (info.ButtonID == 1)
          m_Scroll.Use(m_Mobile);
      }
    }
  }
}