ModernUO/Projects/UOContent/Items/Misc/FlippableAttribute.cs

using System;
using Server.Targeting;

namespace Server.Items;

public static class FlipCommandHandlers
{
    public static void Configure()
    {
        CommandSystem.Register("Flip", AccessLevel.GameMaster, Flip_OnCommand);
    }

    [Usage("Flip"), Description("Turns an item.")]
    public static void Flip_OnCommand(CommandEventArgs e)
    {
        e.Mobile.Target = new FlipTarget();
    }

    private class FlipTarget : Target
    {
        public FlipTarget() : base(-1, false, TargetFlags.None)
        {
        }

        protected override void OnTarget(Mobile from, object targeted)
        {
            if (targeted is not Item item || item.Movable == false && from.AccessLevel == AccessLevel.Player)
            {
                return;
            }

            var type = item.GetType();

            var array = (FlippableAttribute[])type.GetCustomAttributes(typeof(FlippableAttribute), false);

            if (array.Length == 0)
            {
                return;
            }

            var fa = array[0];

            fa.Flip(item);
        }
    }
}

[AttributeUsage(AttributeTargets.Class)]
public class DynamicFlippingAttribute : Attribute
{
}

[AttributeUsage(AttributeTargets.Class)]
public class FlippableAttribute : Attribute
{
    public FlippableAttribute(params int[] itemIDs) => ItemIDs = itemIDs;

    public int[] ItemIDs { get; }

    public virtual void Flip(Item item)
    {
        if (ItemIDs == null || ItemIDs.Length == 0)
        {
            try
            {
                item.GetType().GetMethod("Flip", Type.EmptyTypes)?.Invoke(item, Array.Empty<object>());
            }
            catch
            {
                // ignored
            }
        }
        else
        {
            var index = 0;
            for (var i = 0; i < ItemIDs.Length; i++)
            {
                if (item.ItemID == ItemIDs[i])
                {
                    index = i + 1;
                    break;
                }
            }

            if (index > ItemIDs.Length - 1)
            {
                index = 0;
            }

            item.ItemID = ItemIDs[index];
        }
    }
}