Reorganizes Project (#41)

Projects/Scripts/Items/Weapons/Abilities/DefenseMastery.cs

@@ -0,0 +1,96 @@
+using System;
+using System.Collections.Generic;
+
+namespace Server.Items
+{
+  /// <summary>
+  ///   Raises your physical resistance for a short time while lowering your ability to inflict damage. Requires Bushido or
+  ///   Ninjitsu skill.
+  /// </summary>
+  public class DefenseMastery : WeaponAbility
+  {
+    private static Dictionary<Mobile, DefenseMasteryInfo> m_Table = new Dictionary<Mobile, DefenseMasteryInfo>();
+
+    public override int BaseMana => 30;
+
+    public override bool CheckSkills(Mobile from)
+    {
+      if (GetSkill(from, SkillName.Ninjitsu) < 50.0 && GetSkill(from, SkillName.Bushido) < 50.0)
+      {
+        from.SendLocalizedMessage(1063347,
+          "50"); // You need ~1_SKILL_REQUIREMENT~ Bushido or Ninjitsu skill to perform that attack!
+        return false;
+      }
+
+      return base.CheckSkills(from);
+    }
+
+    public override void OnHit(Mobile attacker, Mobile defender, int damage)
+    {
+      if (!Validate(attacker) || !CheckMana(attacker, true))
+        return;
+
+      ClearCurrentAbility(attacker);
+
+      attacker.SendLocalizedMessage(1063353); // You perform a masterful defense!
+
+      attacker.FixedParticles(0x375A, 1, 17, 0x7F2, 0x3E8, 0x3, EffectLayer.Waist);
+
+      int modifier =
+        (int)(30.0 *
+              ((Math.Max(attacker.Skills.Bushido.Value, attacker.Skills.Ninjitsu.Value) -
+                50.0) / 70.0));
+
+      if (m_Table.TryGetValue(attacker, out DefenseMasteryInfo info))
+        EndDefense(info);
+
+      ResistanceMod mod = new ResistanceMod(ResistanceType.Physical, 50 + modifier);
+      attacker.AddResistanceMod(mod);
+
+      info = new DefenseMasteryInfo(attacker, 80 - modifier, mod);
+      info.m_Timer = Timer.DelayCall(TimeSpan.FromSeconds(3.0), EndDefense, info);
+
+      m_Table[attacker] = info;
+
+      attacker.Delta(MobileDelta.WeaponDamage);
+    }
+
+    public static bool GetMalus(Mobile targ, ref int damageMalus)
+    {
+      if (!m_Table.TryGetValue(targ, out DefenseMasteryInfo info))
+        return false;
+
+      damageMalus = info.m_DamageMalus;
+      return true;
+    }
+
+    private static void EndDefense(DefenseMasteryInfo info)
+    {
+      if (info.m_Mod != null)
+        info.m_From.RemoveResistanceMod(info.m_Mod);
+
+      info.m_Timer?.Stop();
+
+      // No message is sent to the player.
+
+      m_Table.Remove(info.m_From);
+
+      info.m_From.Delta(MobileDelta.WeaponDamage);
+    }
+
+    private class DefenseMasteryInfo
+    {
+      public int m_DamageMalus;
+      public Mobile m_From;
+      public ResistanceMod m_Mod;
+      public Timer m_Timer;
+
+      public DefenseMasteryInfo(Mobile from, int damageMalus, ResistanceMod mod)
+      {
+        m_From = from;
+        m_DamageMalus = damageMalus;
+        m_Mod = mod;
+      }
+    }
+  }
+}