#W# Source and Scripts added. Added Scripts/Settings.cs to expose some basic tweak able settings.

Scripts/Items/Weapons/Abilities/ConcussionBlow.cs

@@ -0,0 +1,52 @@
+using System;
+
+namespace Server.Items
+{
+	/// <summary>
+	/// This devastating strike is most effective against those who are in good health and whose reserves of mana are low, or vice versa.
+	/// </summary>
+	public class ConcussionBlow : WeaponAbility
+	{
+		public ConcussionBlow()
+		{
+		}
+
+		public override int BaseMana{ get{ return 25; } }
+
+		public override bool OnBeforeDamage( Mobile attacker, Mobile defender )
+		{
+			if ( !Validate( attacker ) || !CheckMana( attacker, true ) )
+				return false;
+
+			ClearCurrentAbility( attacker );
+
+			attacker.SendLocalizedMessage( 1060165 ); // You have delivered a concussion!
+			defender.SendLocalizedMessage( 1060166 ); // You feel disoriented!
+
+			defender.PlaySound( 0x213 );
+			defender.FixedParticles( 0x377A, 1, 32, 9949, 1153, 0, EffectLayer.Head );
+
+			Effects.SendMovingParticles( new Entity( Serial.Zero, new Point3D( defender.X, defender.Y, defender.Z + 10 ), defender.Map ), new Entity( Serial.Zero, new Point3D( defender.X, defender.Y, defender.Z + 20 ), defender.Map ), 0x36FE, 1, 0, false, false, 1133, 3, 9501, 1, 0, EffectLayer.Waist, 0x100 );
+
+			int damage = 10; // Base damage is 10.
+
+			if ( defender.HitsMax > 0 ) 
+			{
+				double hitsPercent = ( (double)defender.Hits / (double)defender.HitsMax ) * 100.0;
+
+				double manaPercent = 0;
+
+				if ( defender.ManaMax > 0 )
+					manaPercent = ( (double)defender.Mana / (double)defender.ManaMax ) * 100.0;
+
+				damage += Math.Min( (int)(Math.Abs( hitsPercent - manaPercent ) / 4), 20 );
+			}
+
+			// Total damage is 10 + (0~20) = 10~30, physical, non-resistable.
+
+			defender.Damage( damage, attacker );
+
+			return true;
+		}
+	}
+}