ModernUO/Projects/UOContent/Skills/Provocation.cs

using System;
using Server.Items;
using Server.Mobiles;
using Server.Targeting;

namespace Server.SkillHandlers
{
    public static class Provocation
    {
        public static void Initialize()
        {
            SkillInfo.Table[(int)SkillName.Provocation].Callback = OnUse;
        }

        public static TimeSpan OnUse(Mobile m)
        {
            m.RevealingAction();

            BaseInstrument.PickInstrument(m, OnPickedInstrument);

            return TimeSpan.FromSeconds(1.0); // Cannot use another skill for 1 second
        }

        public static void OnPickedInstrument(Mobile from, BaseInstrument instrument)
        {
            from.RevealingAction();
            from.SendLocalizedMessage(501587); // Whom do you wish to incite?
            from.Target = new InternalFirstTarget(from, instrument);
        }

        private class InternalFirstTarget : Target
        {
            private readonly BaseInstrument m_Instrument;

            public InternalFirstTarget(Mobile from, BaseInstrument instrument) : base(
                BaseInstrument.GetBardRange(from, SkillName.Provocation),
                false,
                TargetFlags.None
            ) =>
                m_Instrument = instrument;

            protected override void OnTarget(Mobile from, object targeted)
            {
                from.RevealingAction();

                if (targeted is BaseCreature creature && from.CanBeHarmful(creature, true))
                {
                    if (!m_Instrument.IsChildOf(from.Backpack))
                    {
                        from.SendLocalizedMessage(
                            1062488
                        ); // The instrument you are trying to play is no longer in your backpack!
                    }
                    else if (creature.Controlled)
                    {
                        from.SendLocalizedMessage(501590); // They are too loyal to their master to be provoked.
                    }
                    else if (creature.IsParagon && BaseInstrument.GetBaseDifficulty(creature) >= 160.0)
                    {
                        from.SendLocalizedMessage(1049446); // You have no chance of provoking those creatures.
                    }
                    else
                    {
                        from.RevealingAction();
                        m_Instrument.PlayInstrumentWell(from);

                        // You play your music and your target becomes angered.  Whom do you wish them to attack?
                        from.SendLocalizedMessage(1008085);
                        from.Target = new InternalSecondTarget(from, m_Instrument, creature);
                    }
                }
                else
                {
                    from.SendLocalizedMessage(501589); // You can't incite that!
                }
            }
        }

        private class InternalSecondTarget : Target
        {
            private readonly BaseCreature m_Creature;
            private readonly BaseInstrument m_Instrument;

            public InternalSecondTarget(Mobile from, BaseInstrument instrument, BaseCreature creature) : base(
                BaseInstrument.GetBardRange(from, SkillName.Provocation),
                false,
                TargetFlags.None
            )
            {
                m_Instrument = instrument;
                m_Creature = creature;
            }

            protected override void OnTarget(Mobile from, object targeted)
            {
                from.RevealingAction();

                if (targeted is BaseCreature creature)
                {
                    if (!m_Instrument.IsChildOf(from.Backpack))
                    {
                        // The instrument you are trying to play is no longer in your backpack!
                        from.SendLocalizedMessage(1062488);
                    }
                    else if (m_Creature.Unprovokable)
                    {
                        from.SendLocalizedMessage(1049446); // You have no chance of provoking those creatures.
                    }
                    else if (creature.Unprovokable && creature is not DemonKnight)
                    {
                        from.SendLocalizedMessage(1049446); // You have no chance of provoking those creatures.
                    }
                    else if (m_Creature.Map != creature.Map ||
                             !m_Creature.InRange(creature, BaseInstrument.GetBardRange(from, SkillName.Provocation)))
                    {
                        // The creatures you are trying to provoke are too far away from each other for your music to have an effect.
                        from.SendLocalizedMessage(1049450);
                    }
                    else if (m_Creature != creature)
                    {
                        from.NextSkillTime = Core.TickCount + 10000;

                        var diff =
                            (m_Instrument.GetDifficultyFor(m_Creature) + m_Instrument.GetDifficultyFor(creature)) * 0.5 - 5.0;
                        var music = from.Skills.Musicianship.Value;

                        if (music > 100.0)
                        {
                            diff -= (music - 100.0) * 0.5;
                        }

                        if (from.CanBeHarmful(m_Creature, true) && from.CanBeHarmful(creature, true))
                        {
                            if (!BaseInstrument.CheckMusicianship(from))
                            {
                                from.NextSkillTime = Core.TickCount + 5000;
                                from.SendLocalizedMessage(500612); // You play poorly, and there is no effect.
                                m_Instrument.PlayInstrumentBadly(from);
                                m_Instrument.ConsumeUse(from);
                            }
                            else
                            {
                                // from.DoHarmful( m_Creature );
                                // from.DoHarmful( creature );

                                if (!from.CheckTargetSkill(SkillName.Provocation, creature, diff - 25.0, diff + 25.0))
                                {
                                    from.NextSkillTime = Core.TickCount + 5000;
                                    from.SendLocalizedMessage(501599); // Your music fails to incite enough anger.
                                    m_Instrument.PlayInstrumentBadly(from);
                                    m_Instrument.ConsumeUse(from);
                                }
                                else
                                {
                                    from.SendLocalizedMessage(501602); // Your music succeeds, as you start a fight.
                                    m_Instrument.PlayInstrumentWell(from);
                                    m_Instrument.ConsumeUse(from);
                                    m_Creature.Provoke(from, creature, true);
                                }
                            }
                        }
                    }
                    else
                    {
                        from.SendLocalizedMessage(501593); // You can't tell someone to attack themselves!
                    }
                }
                else
                {
                    from.SendLocalizedMessage(501589); // You can't incite that!
                }
            }
        }
    }
}