ModernUO/Projects/UOContent/Items/Special/Special Scrolls/ScrollofAlacrity.cs

using System;
using ModernUO.Serialization;
using Server.Engines.MLQuests;
using Server.Engines.MLQuests.Objectives;
using Server.Mobiles;

namespace Server.Items;

[SerializationGenerator(0, false)]
public partial class ScrollofAlacrity : SpecialScroll
{
    [Constructible]
    public ScrollofAlacrity(SkillName skill = SkillName.Alchemy) : base(skill, 0.0)
    {
        ItemID = 0x14EF;
        Hue = 0x4AB;
    }

    public override int LabelNumber => 1078604; // Scroll of Alacrity

    /*
     * Using a Scroll of Alacrity for a given skill will increase the amount of skillgain you receive for that skill.
     * Once the Scroll of Alacrity duration has expired, skillgain will return to normal for that skill.
     */
    public override int Message => 1078602;

    public override string DefaultTitle => "<basefont color=#FFFFFF>Scroll of Alacrity:</basefont>";

    public override void GetProperties(IPropertyList list)
    {
        base.GetProperties(list);

        list.AddLocalized(1071345, SkillLabel); // Skill: ~1_val~
        list.Add(1071346, 15); // Duration: ~1_val~ minutes
    }

    public override bool CanUse(Mobile from)
    {
        if (!(base.CanUse(from) && from is PlayerMobile pm))
        {
            return false;
        }

        var context = MLQuestSystem.GetContext(pm);

        if (context != null)
        {
            foreach (var instance in context.QuestInstances)
            {
                foreach (var objective in instance.Objectives)
                {
                    if (!objective.Expired && objective is GainSkillObjectiveInstance objectiveInstance &&
                        objectiveInstance.Handles(Skill))
                    {
                        from.SendMessage("You are already under the effect of an enhanced skillgain quest.");
                        return false;
                    }
                }
            }
        }

        if (pm.AcceleratedStart > Core.Now)
        {
            from.SendLocalizedMessage(1077951); // You are already under the effect of an accelerated skillgain scroll.
            return false;
        }

        return true;
    }

    public override void Use(Mobile from)
    {
        if (!(CanUse(from) && from is PlayerMobile pm))
        {
            return;
        }

        var skill = from.Skills[Skill];
        var skillBase = skill.Base;
        var skillCap = skill.Cap;

        if (skillBase >= skillCap || skill.Lock != SkillLock.Up)
        {
            /* You cannot increase this skill at this time. The skill may be locked or set to lower in your skill menu.
             * If you are at your total skill cap, you must use a Powerscroll to increase your current skill cap.
             */
            from.SendLocalizedMessage(1094935);
            return;
        }

        // You are infused with intense energy. You are under the effects of an accelerated skillgain scroll.
        from.SendLocalizedMessage(1077956);

        Effects.PlaySound(from.Location, from.Map, 0x1E9);
        Effects.SendTargetParticles(from, 0x373A, 35, 45, 0x00, 0x00, 9502, (EffectLayer)255, 0x100);

        pm.AcceleratedStart = Core.Now + TimeSpan.FromMinutes(15);
        Timer.StartTimer(TimeSpan.FromMinutes(15), () => Expire_Callback(from));

        pm.AcceleratedSkill = Skill;

        Delete();
    }

    // TODO: Handle this upon deserialization. Create Dictionary and serialize Mobile/Timers?
    private static void Expire_Callback(Mobile m)
    {
        m.PlaySound(0x1F8);
        // The intense energy dissipates. You are no longer under the effects of an accelerated skillgain scroll.
        m.SendLocalizedMessage(1077957);
    }
}