ModernUO/Projects/Scripts/Mobiles/AI/MeleeAI.cs

//
// This is a first simple AI
//
//

namespace Server.Mobiles
{
  public class MeleeAI : BaseAI
  {
    public MeleeAI(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}, attacking", m_Mobile.FocusMob.Name);

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

      return true;
    }

    public override bool DoActionCombat()
    {
      Mobile combatant = m_Mobile.Combatant;

      if (combatant?.Deleted != false || combatant.Map != m_Mobile.Map || !combatant.Alive ||
          combatant.IsDeadBondedPet)
      {
        m_Mobile.DebugSay("My combatant is gone, so my guard is up");

        Action = ActionType.Guard;

        return true;
      }

      if (!m_Mobile.InRange(combatant, m_Mobile.RangePerception))
      {
        // They are somewhat far away, can we find something else?

        if (AcquireFocusMob(m_Mobile.RangePerception, m_Mobile.FightMode, false, false, true))
        {
          m_Mobile.Combatant = m_Mobile.FocusMob;
          m_Mobile.FocusMob = null;
        }
        else if (!m_Mobile.InRange(combatant, m_Mobile.RangePerception * 3))
        {
          m_Mobile.Combatant = null;
        }

        combatant = m_Mobile.Combatant;

        if (combatant == null)
        {
          m_Mobile.DebugSay("My combatant has fled, so I am on guard");
          Action = ActionType.Guard;

          return true;
        }
      }

      /*if ( !m_Mobile.InLOS( combatant ) )
      {
        if ( AcquireFocusMob( m_Mobile.RangePerception, m_Mobile.FightMode, false, false, true ) )
        {
          m_Mobile.Combatant = combatant = m_Mobile.FocusMob;
          m_Mobile.FocusMob = null;
        }
      }*/

      if (MoveTo(combatant, true, m_Mobile.RangeFight))
      {
        m_Mobile.Direction = m_Mobile.GetDirectionTo(combatant);
      }
      else if (AcquireFocusMob(m_Mobile.RangePerception, m_Mobile.FightMode, false, false, true))
      {
        if (m_Mobile.Debug)
          m_Mobile.DebugSay("My move is blocked, so I am going to attack {0}", m_Mobile.FocusMob.Name);

        m_Mobile.Combatant = m_Mobile.FocusMob;
        Action = ActionType.Combat;

        return true;
      }
      else if (m_Mobile.GetDistanceToSqrt(combatant) > m_Mobile.RangePerception + 1)
      {
        if (m_Mobile.Debug)
          m_Mobile.DebugSay("I cannot find {0}, so my guard is up", combatant.Name);

        Action = ActionType.Guard;

        return true;
      }
      else
      {
        if (m_Mobile.Debug)
          m_Mobile.DebugSay("I should be closer to {0}", combatant.Name);
      }

      if (!m_Mobile.Controlled && !m_Mobile.Summoned && m_Mobile.CanFlee)
        if (m_Mobile.Hits < m_Mobile.HitsMax * 20 / 100)
        {
          // We are low on health, should we flee?

          bool flee = false;

          if (m_Mobile.Hits < combatant.Hits)
          {
            // We are more hurt than them

            int diff = combatant.Hits - m_Mobile.Hits;

            flee = Utility.Random(0, 100) < 10 + diff; // (10 + diff)% chance to flee
          }
          else
          {
            flee = Utility.Random(0, 100) < 10; // 10% chance to flee
          }

          if (flee)
          {
            if (m_Mobile.Debug)
              m_Mobile.DebugSay("I am going to flee from {0}", combatant.Name);

            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;
    }

    public override bool DoActionFlee()
    {
      if (m_Mobile.Hits > m_Mobile.HitsMax / 2)
      {
        m_Mobile.DebugSay("I am stronger now, so I will continue fighting");
        Action = ActionType.Combat;
      }
      else
      {
        m_Mobile.FocusMob = m_Mobile.Combatant;
        base.DoActionFlee();
      }

      return true;
    }
  }
}