Reorganizes Project (#41)

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

@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+
+namespace Server.Items
+{
+  /// <summary>
+  ///   Attack faster as you swing with both weapons.
+  /// </summary>
+  public class DualWield : WeaponAbility
+  {
+    public static Dictionary<Mobile, DualWieldTimer> Registry{ get; } = new Dictionary<Mobile, DualWieldTimer>();
+
+    public override int BaseMana => 30;
+
+    public override bool CheckSkills(Mobile from)
+    {
+      if (GetSkill(from, SkillName.Ninjitsu) < 50.0)
+      {
+        from.SendLocalizedMessage(1063352,
+          "50"); // You need ~1_SKILL_REQUIREMENT~ 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;
+
+      if (Registry.TryGetValue(attacker, out DualWieldTimer timer))
+      {
+        timer.Stop();
+        Registry.Remove(attacker);
+      }
+
+      ClearCurrentAbility(attacker);
+
+      attacker.SendLocalizedMessage(1063362); // You dually wield for increased speed!
+      attacker.FixedParticles(0x3779, 1, 15, 0x7F6, 0x3E8, 3, EffectLayer.LeftHand);
+
+      timer = new DualWieldTimer(attacker,
+        (int)(20.0 + 3.0 * (attacker.Skills.Ninjitsu.Value - 50.0) / 7.0)); //20-50 % increase
+
+      timer.Start();
+      Registry.Add(attacker, timer);
+    }
+
+    public class DualWieldTimer : Timer
+    {
+      private Mobile m_Owner;
+
+      public DualWieldTimer(Mobile owner, int bonusSwingSpeed)
+        : base(TimeSpan.FromSeconds(6.0))
+      {
+        m_Owner = owner;
+        BonusSwingSpeed = bonusSwingSpeed;
+        Priority = TimerPriority.FiftyMS;
+      }
+
+      public int BonusSwingSpeed{ get; }
+
+      protected override void OnTick()
+      {
+        Registry.Remove(m_Owner);
+      }
+    }
+  }
+}