Reorganizes Project (#41)

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

@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+
+namespace Server.Items
+{
+  /// <summary>
+  ///   The assassin's friend.
+  ///   A successful Mortal Strike will render its victim unable to heal any damage for several seconds.
+  ///   Use a gruesome follow-up to finish off your foe.
+  /// </summary>
+  public class MortalStrike : WeaponAbility
+  {
+    public static readonly TimeSpan PlayerDuration = TimeSpan.FromSeconds(6.0);
+    public static readonly TimeSpan NPCDuration = TimeSpan.FromSeconds(12.0);
+
+    private static Dictionary<Mobile, InternalTimer> m_Table = new Dictionary<Mobile, InternalTimer>();
+
+    public override int BaseMana => 30;
+
+    public override void OnHit(Mobile attacker, Mobile defender, int damage)
+    {
+      if (!Validate(attacker) || !CheckMana(attacker, true)) return;
+
+      ClearCurrentAbility(attacker);
+
+      attacker.SendLocalizedMessage(1060086); // You deliver a mortal wound!
+      defender.SendLocalizedMessage(1060087); // You have been mortally wounded!
+
+      defender.PlaySound(0x1E1);
+      defender.FixedParticles(0x37B9, 244, 25, 9944, 31, 0, EffectLayer.Waist);
+
+      // Do not reset timer if one is already in place.
+      if (!IsWounded(defender))
+        BeginWound(defender, defender.Player ? PlayerDuration : NPCDuration);
+    }
+
+    public static bool IsWounded(Mobile m)
+    {
+      return m_Table.ContainsKey(m);
+    }
+
+    public static void BeginWound(Mobile m, TimeSpan duration)
+    {
+      if (m_Table.TryGetValue(m, out InternalTimer timer))
+        timer?.Stop();
+
+      m_Table[m] = timer = new InternalTimer(m, duration);
+      timer.Start();
+
+      m.YellowHealthbar = true;
+    }
+
+    public static void EndWound(Mobile m)
+    {
+      if (m_Table.TryGetValue(m, out InternalTimer timer))
+      {
+        timer.Stop();
+        m_Table.Remove(m);
+      }
+
+      m.YellowHealthbar = false;
+      m.SendLocalizedMessage(1060208); // You are no longer mortally wounded.
+    }
+
+    private class InternalTimer : Timer
+    {
+      private Mobile m_Mobile;
+
+      public InternalTimer(Mobile m, TimeSpan duration) : base(duration)
+      {
+        m_Mobile = m;
+        Priority = TimerPriority.TwoFiftyMS;
+      }
+
+      protected override void OnTick()
+      {
+        EndWound(m_Mobile);
+      }
+    }
+  }
+}