Addition of DragonWeaponDefence effect.

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java

@@ -750,6 +750,8 @@ public class PlayerInstance extends Playable
 	private int _cursedWeaponEquippedId = 0;
 	private boolean _combatFlagEquippedId = false;
 	
+	private boolean _isDragonWeaponEquipped = false;
+	
 	private boolean _canRevive = true;
 	private int _reviveRequested = 0;
 	private double _revivePower = 0;
@@ -11385,6 +11387,16 @@ public class PlayerInstance extends Playable
 		return _cursedWeaponEquippedId;
 	}
 	
+	public void setDragonWeaponEquipped(boolean value)
+	{
+		_isDragonWeaponEquipped = value;
+	}
+	
+	public boolean isDragonWeaponEquipped()
+	{
+		return _isDragonWeaponEquipped;
+	}
+	
 	public boolean isCombatFlagEquipped()
 	{
 		return _combatFlagEquippedId;

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Formulas.java

@@ -1604,7 +1604,18 @@ public class Formulas
 				pvpDefense = target.getStat().getValue(Stat.PVP_PHYSICAL_ATTACK_DEFENCE, 1) * Config.PVP_PHYSICAL_ATTACK_DEFENCE_MULTIPLIERS[targetPlayer.getClassId().getId()];
 			}
 			
-			return Math.max(0.05, 1 + (pvpAttack - pvpDefense)); // Bonus should not be negative.
+			// Dragon weapon defence stat.
+			final double dragonDefense;
+			if (attackerPlayer.isDragonWeaponEquipped())
+			{
+				dragonDefense = target.getStat().getValue(Stat.DRAGON_WEAPON_DEFENCE, 1);
+			}
+			else
+			{
+				dragonDefense = 1;
+			}
+			
+			return Math.max(0.05, dragonDefense * (1 + (pvpAttack - pvpDefense))); // Bonus should not be negative.
 		}
 		
 		// PvE Bonus

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/stats/Stat.java

@@ -87,6 +87,7 @@ public enum Stat
 	CRITICAL_DAMAGE_ADD("cAtkAdd"), // this is another type for special critical damage mods - vicious stance, critical power and critical damage SA
 	HATE_ATTACK("attackHate"),
 	REAR_DAMAGE_RATE("rearDamage"),
+	DRAGON_WEAPON_DEFENCE("dragonWeaponDefence"),
 	
 	// PVP BONUS
 	PVP_PHYSICAL_ATTACK_DAMAGE("pvpPhysDmg"),