ModernUO/Scripts/Mobiles/AI/ThiefAI.cs

using Server.Items;

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

namespace Server.Mobiles
{
  public class ThiefAI : BaseAI
  {
    private Item m_toDisarm;

    public ThiefAI(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))
      {
        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 == null || combatant.Deleted || combatant.Map != m_Mobile.Map)
      {
        m_Mobile.DebugSay("My combatant is gone, so my guard is up");

        Action = ActionType.Guard;

        return true;
      }

      if (WalkMobileRange(combatant, 1, true, m_Mobile.RangeFight, m_Mobile.RangeFight))
      {
        m_Mobile.Direction = m_Mobile.GetDirectionTo(combatant);
        if (m_toDisarm == null)
          m_toDisarm = combatant.FindItemOnLayer(Layer.OneHanded);

        if (m_toDisarm == null)
          m_toDisarm = combatant.FindItemOnLayer(Layer.TwoHanded);

        if (m_toDisarm != null && m_toDisarm.IsChildOf(m_Mobile.Backpack))
        {
          m_toDisarm = combatant.FindItemOnLayer(Layer.OneHanded);
          if (m_toDisarm == null)
            m_toDisarm = combatant.FindItemOnLayer(Layer.TwoHanded);
        }

        if (!Core.AOS && !m_Mobile.DisarmReady && m_Mobile.Skills[SkillName.Wrestling].Value >= 80.0 &&
            m_Mobile.Skills[SkillName.ArmsLore].Value >= 80.0 && m_toDisarm != null)
          EventSink.InvokeDisarmRequest(new DisarmRequestEventArgs(m_Mobile));

        if (m_toDisarm != null && m_toDisarm.IsChildOf(combatant.Backpack) &&
            Core.TickCount - m_Mobile.NextSkillTime >= 0 && m_toDisarm.LootType != LootType.Blessed &&
            m_toDisarm.LootType != LootType.Newbied)
        {
          m_Mobile.DebugSay("Trying to steal from combatant.");
          m_Mobile.UseSkill(SkillName.Stealing);
          m_Mobile.Target?.Invoke(m_Mobile, m_toDisarm);
        }
        else if (m_toDisarm == null && Core.TickCount - m_Mobile.NextSkillTime >= 0)
        {
          Container cpack = combatant.Backpack;

          if (cpack != null)
          {
            Item steala = cpack.FindItemByType<Bandage>();
            if (steala != null)
            {
              m_Mobile.DebugSay("Trying to steal from combatant.");
              m_Mobile.UseSkill(SkillName.Stealing);
              m_Mobile.Target?.Invoke(m_Mobile, steala);
            }

            Item stealb = cpack.FindItemByType<Nightshade>();
            if (stealb != null)
            {
              m_Mobile.DebugSay("Trying to steal from combatant.");
              m_Mobile.UseSkill(SkillName.Stealing);
              m_Mobile.Target?.Invoke(m_Mobile, stealb);
            }

            Item stealc = cpack.FindItemByType<BlackPearl>();
            if (stealc != null)
            {
              m_Mobile.DebugSay("Trying to steal from combatant.");
              m_Mobile.UseSkill(SkillName.Stealing);
              m_Mobile.Target?.Invoke(m_Mobile, stealc);
            }

            Item steald = cpack.FindItemByType<MandrakeRoot>();
            if (steald != null)
            {
              m_Mobile.DebugSay("Trying to steal from combatant.");
              m_Mobile.UseSkill(SkillName.Stealing);
              m_Mobile.Target?.Invoke(m_Mobile, steald);
            }
            else if (steala == null && stealb == null && stealc == null)
            {
              m_Mobile.DebugSay("I am going to flee from {0}", combatant.Name);

              Action = ActionType.Flee;
            }
          }
        }
      }
      else
      {
        m_Mobile.DebugSay("I should be closer to {0}", combatant.Name);
      }

      if (m_Mobile.Hits < m_Mobile.HitsMax * 20 / 100 && m_Mobile.CanFlee)
      {
        // 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)
        {
          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))
      {
        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;
    }
  }
}