ModernUO/Projects/UOContent/Mobiles/AI/ArcherAI.cs

using Server.Items;

namespace Server.Mobiles
{
    public class ArcherAI : BaseAI
    {
        public ArcherAI(BaseCreature m) : base(m)
        {
        }

        public override bool DoActionWander()
        {
            m_Mobile.DebugSay("I have no combatant");

            if (AcquireFocusMob(m_Mobile.RangePerception, m_Mobile.FightMode, false, false, true))
            {
                if (m_Mobile.Debug)
                {
                    m_Mobile.DebugSay("I have detected {0} and I will attack", m_Mobile.FocusMob.Name);
                }

                m_Mobile.Combatant = m_Mobile.FocusMob;
                Action = ActionType.Combat;
            }
            else
            {
                return base.DoActionWander();
            }

            return true;
        }

        public override bool DoActionCombat()
        {
            if (m_Mobile.Combatant?.Deleted != false || !m_Mobile.Combatant.Alive ||
                m_Mobile.Combatant.IsDeadBondedPet)
            {
                m_Mobile.DebugSay("My combatant is deleted");
                Action = ActionType.Guard;
                return true;
            }

            if (Core.TickCount - m_Mobile.LastMoveTime > 1000)
            {
                if (
                    m_Mobile.Combatant != null &&
                    !WalkMobileRange(
                        m_Mobile.Combatant,
                        1,
                        true,
                        m_Mobile.RangeFight,
                        m_Mobile.Weapon.MaxRange
                    )
                )
                {
                    if (m_Mobile.Debug)
                    {
                        m_Mobile.DebugSay("I am still not in range of {0}", m_Mobile.Combatant.Name);
                    }

                    if ((int)m_Mobile.GetDistanceToSqrt(m_Mobile.Combatant) > m_Mobile.RangePerception + 1)
                    {
                        if (m_Mobile.Debug)
                        {
                            m_Mobile.DebugSay("I have lost {0}", m_Mobile.Combatant.Name);
                        }

                        m_Mobile.Combatant = null;
                        Action = ActionType.Guard;
                        return true;
                    }
                }
            }

            // When we have no ammo, we flee
            var pack = m_Mobile.Backpack;

            if (pack?.FindItemByType<Arrow>() == null)
            {
                Action = ActionType.Flee;
                return true;
            }

            // At 20% we should check if we must leave
            if (m_Mobile.Hits < m_Mobile.HitsMax * 20 / 100 && m_Mobile.CanFlee)
            {
                var bFlee = false;
                // if my current hits are more than my opponent, i don't care
                if (m_Mobile.Combatant != null && m_Mobile.Hits < m_Mobile.Combatant.Hits)
                {
                    var iDiff = m_Mobile.Combatant.Hits - m_Mobile.Hits;

                    if (Utility.Random(0, 100) > 10 + iDiff) // 10% to flee + the diff of hits
                    {
                        bFlee = true;
                    }
                }
                else if (m_Mobile.Combatant != null && m_Mobile.Hits >= m_Mobile.Combatant.Hits)
                {
                    if (Utility.Random(0, 100) > 10) // 10% to flee
                    {
                        bFlee = true;
                    }
                }

                if (bFlee)
                {
                    Action = ActionType.Flee;
                }
            }

            return true;
        }

        public override bool DoActionGuard()
        {
            if (AcquireFocusMob(m_Mobile.RangePerception, m_Mobile.FightMode, false, false, true))
            {
                if (m_Mobile.Debug)
                {
                    m_Mobile.DebugSay("I have detected {0}, attacking", m_Mobile.FocusMob.Name);
                }

                m_Mobile.Combatant = m_Mobile.FocusMob;
                Action = ActionType.Combat;
            }
            else
            {
                base.DoActionGuard();
            }

            return true;
        }
    }
}