1 files changed, 25 insertions, 0 deletions
diff --git a/src/game/StatSystem.cpp b/src/game/StatSystem.cpp
index d991a96ebe6..a55f0bb47c3 100644
--- a/src/game/StatSystem.cpp
+++ b/src/game/StatSystem.cpp
@@ -151,6 +151,7 @@ bool Player::UpdateAllStats()
     UpdateAllSpellCritChances();
     UpdateDefenseBonusesMod();
     UpdateShieldBlockValue();
+	UpdateArmorPenetration();
     UpdateSpellDamageAndHealingBonus();
     UpdateManaRegen();
     UpdateExpertise(BASE_ATTACK);
@@ -686,6 +687,30 @@ void Player::UpdateExpertise(WeaponAttackType attack)
     }
 }
 
+void Player::UpdateArmorPenetration()
+{
+	m_armorPenetrationPct = GetRatingBonusValue(CR_ARMOR_PENETRATION);
+
+	AuraList const& armorAuras = GetAurasByType(SPELL_AURA_MOD_TARGET_ARMOR_PCT);
+	for(AuraList::const_iterator itr = armorAuras.begin(); itr != armorAuras.end(); ++itr)
+	{
+		// affects all weapons
+		if((*itr)->GetSpellProto()->EquippedItemClass == -1)
+		{
+			m_armorPenetrationPct += (*itr)->GetModifier()->m_amount;
+			continue;
+		}
+
+		// dependent on weapon class
+		for(uint8 i = 0; i < MAX_ATTACK; ++i)
+		{
+			Item *weapon = GetWeaponForAttack(WeaponAttackType(i));
+			if(weapon && weapon->IsFitToSpellRequirements((*itr)->GetSpellProto()))
+				m_armorPenetrationPct += (*itr)->GetModifier()->m_amount;
+		}
+	}
+}
+
 void Player::ApplyManaRegenBonus(int32 amount, bool apply)
 {
     m_baseManaRegen+= apply ? amount : -amount;