[8458] Re-implement SPELL_AURA_MOD_TARGET_ARMOR_PCT in more porper way for weapon dependent cases.

(cherry picked from commit 7efab7fd38c3a753e967648ca8ef1f2cdfbac76c)

Signed-off-by: VladimirMangos <vladimir@getmangos.com>

With some fixes and rewrites.

src/game/Player.cpp

@@ -439,6 +439,7 @@ Player::Player (WorldSession *session): Unit(), m_achievementMgr(this), m_reputa
     m_baseSpellPower = 0;
     m_baseFeralAP = 0;
     m_baseManaRegen = 0;
+    m_armorPenetrationPct = 0.0f;
 
     // Honor System
     m_lastHonorUpdateTime = time(NULL);
@@ -4972,6 +4973,8 @@ void Player::ApplyRatingMod(CombatRating cr, int32 value, bool apply)
             }
             break;
         case CR_ARMOR_PENETRATION:
+            if(affectStats)
+                UpdateArmorPenetration();
             break;
     }
 }
@@ -10441,9 +10444,15 @@ Item* Player::EquipItem( uint16 pos, Item *pItem, bool update )
         ApplyEquipCooldown(pItem);
 
         if( slot == EQUIPMENT_SLOT_MAINHAND )
+        {
             UpdateExpertise(BASE_ATTACK);
+            UpdateArmorPenetration();
+        }
         else if( slot == EQUIPMENT_SLOT_OFFHAND )
+        {
             UpdateExpertise(OFF_ATTACK);
+            UpdateArmorPenetration();
+        }
     }
     else
     {
@@ -10583,9 +10592,13 @@ void Player::RemoveItem( uint8 bag, uint8 slot, bool update )
                         }
 
                         UpdateExpertise(BASE_ATTACK);
+                        UpdateArmorPenetration();
                     }
                     else if( slot == EQUIPMENT_SLOT_OFFHAND )
+                    {
                         UpdateExpertise(OFF_ATTACK);
+                        UpdateArmorPenetration();
+                    }
                 }
             }
             // need update known currency
@@ -10694,10 +10707,16 @@ void Player::DestroyItem( uint8 bag, uint8 slot, bool update )
                 RemoveItemDependentAurasAndCasts(pItem);
 
                 // update expertise
-                if ( slot == EQUIPMENT_SLOT_MAINHAND )
+                if( slot == EQUIPMENT_SLOT_MAINHAND )
+                {
                     UpdateExpertise(BASE_ATTACK);
+                    UpdateArmorPenetration();
+                }
                 else if( slot == EQUIPMENT_SLOT_OFFHAND )
+                {
                     UpdateExpertise(OFF_ATTACK);
+                    UpdateArmorPenetration();
+                }
 
                 // equipment visual show
                 SetVisibleItemSlot(slot, NULL);

src/game/Player.h

@@ -1719,6 +1719,7 @@ class MANGOS_DLL_SPEC Player : public Unit
         void UpdateAllSpellCritChances();
         void UpdateSpellCritChance(uint32 school);
         void UpdateExpertise(WeaponAttackType attType);
+        void UpdateArmorPenetration();
         void ApplyManaRegenBonus(int32 amount, bool apply);
         void UpdateManaRegen();
 
@@ -1882,6 +1883,7 @@ class MANGOS_DLL_SPEC Player : public Unit
         float GetTotalPercentageModValue(BaseModGroup modGroup) const { return m_auraBaseMod[modGroup][FLAT_MOD] + m_auraBaseMod[modGroup][PCT_MOD]; }
         void _ApplyAllStatBonuses();
         void _RemoveAllStatBonuses();
+        float GetArmorPenetrationPct() const { return m_armorPenetrationPct; }
 
         void _ApplyWeaponDependentAuraMods(Item *item, WeaponAttackType attackType, bool apply);
         void _ApplyWeaponDependentAuraCritMod(Item *item, WeaponAttackType attackType, Aura* aura, bool apply);
@@ -2349,6 +2351,7 @@ class MANGOS_DLL_SPEC Player : public Unit
         uint16 m_baseSpellPower;
         uint16 m_baseFeralAP;
         uint16 m_baseManaRegen;
+        float m_armorPenetrationPct;
 
         SpellModList m_spellMods[MAX_SPELLMOD];
         int32 m_SpellModRemoveCount;

src/game/SpellAuras.cpp

@@ -330,7 +330,7 @@ pAuraHandler AuraHandler[TOTAL_AURAS]=
     &Aura::HandleNoImmediateEffect,                         //277 SPELL_AURA_MOD_MAX_AFFECTED_TARGETS Use SpellClassMask for spell select
     &Aura::HandleNULL,                                      //278 SPELL_AURA_MOD_DISARM_RANGED disarm ranged weapon
     &Aura::HandleNULL,                                      //279 visual effects? 58836 and 57507
-    &Aura::HandleNoImmediateEffect,                         //280 SPELL_AURA_MOD_TARGET_ARMOR_PCT       implemented in Unit::CalcArmorReducedDamage
+    &Aura::HandleModTargetArmorPct,                         //280 SPELL_AURA_MOD_TARGET_ARMOR_PCT
     &Aura::HandleNULL,                                      //281 SPELL_AURA_MOD_HONOR_GAIN
     &Aura::HandleAuraIncreaseBaseHealthPercent,             //282 SPELL_AURA_INCREASE_BASE_HEALTH_PERCENT
     &Aura::HandleNoImmediateEffect,                         //283 SPELL_AURA_MOD_HEALING_RECEIVED       implemented in Unit::SpellHealingBonus
@@ -7275,3 +7275,11 @@ bool Aura::IsCritFromAbilityAura(Unit* caster, uint32& damage)
     }
     return false;
 }
+
+void Aura::HandleModTargetArmorPct(bool apply, bool Real)
+{
+    if(m_target->GetTypeId() != TYPEID_PLAYER)
+        return;
+
+    ((Player*)m_target)->UpdateArmorPenetration();
+}

src/game/SpellAuras.h

@@ -211,6 +211,7 @@ class MANGOS_DLL_SPEC Aura
         void HandleAuraIncreaseBaseHealthPercent(bool Apply, bool Real);
         void HandleNoReagentUseAura(bool Apply, bool Real);
         void HandlePhase(bool Apply, bool Real);
+        void HandleModTargetArmorPct(bool Apply, bool Real);
 
         virtual ~Aura();
 

src/game/StatSystem.cpp

@@ -132,6 +132,7 @@ bool Player::UpdateAllStats()
     UpdateAllSpellCritChances();
     UpdateDefenseBonusesMod();
     UpdateShieldBlockValue();
+    UpdateArmorPenetration();
     UpdateSpellDamageAndHealingBonus();
     UpdateManaRegen();
     UpdateExpertise(BASE_ATTACK);
@@ -648,6 +649,30 @@ 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;

src/game/Unit.cpp

@@ -1569,12 +1569,9 @@ uint32 Unit::CalcArmorReducedDamage(Unit* pVictim, const uint32 damage)
     // Ignore enemy armor by SPELL_AURA_MOD_TARGET_RESISTANCE aura
     armor += GetTotalAuraModifierByMiscMask(SPELL_AURA_MOD_TARGET_RESISTANCE, SPELL_SCHOOL_MASK_NORMAL);
 
-    // Apply Player CR_ARMOR_PENETRATION rating
+    // Apply Player CR_ARMOR_PENETRATION rating and percent talents
     if (GetTypeId()==TYPEID_PLAYER)
-        armor *= 1.0f - ((Player*)this)->GetRatingBonusValue(CR_ARMOR_PENETRATION) / 100.0f;
-
-    // Ignore enemy armor by SPELL_AURA_MOD_TARGET_ARMOR_PCT
-    armor *= 1.0f - GetTotalAuraModifier(SPELL_AURA_MOD_TARGET_ARMOR_PCT) / 100.0f;
+        armor *= 1.0f - ((Player*)this)->GetArmorPenetrationPct() / 100.0f;
 
     if (armor < 0.0f)
         armor = 0.0f;

src/shared/revision_nr.h

@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "8457"
+ #define REVISION_NR "8458"
 #endif // __REVISION_NR_H__