ModernUO/Projects/UOContent/Items/Skill Items/Magical/Potions/InvisibilityPotion.cs

using System;
using System.Collections.Generic;

namespace Server.Items
{
    public class InvisibilityPotion : BasePotion
    {
        private static readonly Dictionary<Mobile, Timer> m_Table = new();

        [Constructible]
        public InvisibilityPotion() : base(0xF0A, PotionEffect.Invisibility) => Hue = 0x48D;

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

        public override int LabelNumber => 1072941; // Potion of Invisibility

        public override void Drink(Mobile from)
        {
            if (from.Hidden)
            {
                from.SendLocalizedMessage(1073185); // You are already unseen.
                return;
            }

            if (HasTimer(from))
            {
                from.SendLocalizedMessage(1073186); // An invisibility potion is already taking effect on your person.
                return;
            }

            Consume();
            m_Table[from] = Timer.DelayCall(TimeSpan.FromSeconds(2), Hide, from);
            PlayDrinkEffect(from);
        }

        public static void Hide(Mobile m)
        {
            Effects.SendLocationParticles(
                EffectItem.Create(new Point3D(m.X, m.Y, m.Z + 16), m.Map, EffectItem.DefaultDuration),
                0x376A,
                10,
                15,
                5045
            );
            m.PlaySound(0x3C4);

            m.Hidden = true;

            BuffInfo.RemoveBuff(m, BuffIcon.HidingAndOrStealth);
            BuffInfo.AddBuff(m, new BuffInfo(BuffIcon.Invisibility, 1075825)); // Invisibility/Invisible

            RemoveTimer(m);

            Timer.DelayCall(TimeSpan.FromSeconds(30), EndHide, m);
        }

        public static void EndHide(Mobile m)
        {
            m.RevealingAction();
            RemoveTimer(m);
        }

        public static bool HasTimer(Mobile m) => m_Table.ContainsKey(m);

        public static void RemoveTimer(Mobile m, bool interrupted = false)
        {
            if (m_Table.Remove(m, out var timer))
            {
                if (interrupted)
                {
                    m.SendLocalizedMessage(1073187); // The invisibility effect is interrupted.
                }

                timer.Stop();
            }
        }

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

            writer.Write(0); // version
        }

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

            var version = reader.ReadInt();
        }
    }
}