Core/Auras: Implement SPELL_AURA_DETECT_AMORE (#19955)

Based on https://github.com/mangos/mangos/commit/b58b29c9581327129daaf43b9c368810db850771

(cherry picked from commit a27a3e0457e3f6c2dd6955ce86b51888c5590ffc)

2 files changed, 36 insertions, 1 deletions

diff --git a/src/server/game/Spells/Auras/SpellAuraEffects.cpp b/src/server/game/Spells/Auras/SpellAuraEffects.cpp
index 6c5c117dcc2..18d68a7f0fe 100644
--- a/src/server/game/Spells/Auras/SpellAuraEffects.cpp
+++ b/src/server/game/Spells/Auras/SpellAuraEffects.cpp
@@ -236,7 +236,7 @@ NonDefaultConstructible<pAuraEffectHandler> AuraEffectHandler[TOTAL_AURAS]=
     &AuraEffect::HandleAuraModRangedAttackPowerPercent,           //167 SPELL_AURA_MOD_RANGED_ATTACK_POWER_PCT
     &AuraEffect::HandleNoImmediateEffect,                         //168 SPELL_AURA_MOD_DAMAGE_DONE_VERSUS            implemented in Unit::SpellDamageBonus, Unit::MeleeDamageBonus
     &AuraEffect::HandleUnused,                                    //169 Unused (4.3.4) old SPELL_AURA_MOD_CRIT_PERCENT_VERSUS
-    &AuraEffect::HandleNULL,                                      //170 SPELL_AURA_DETECT_AMORE       various spells that change visual of units for aura target (clientside?)
+    &AuraEffect::HandleDetectAmore,                               //170 SPELL_AURA_DETECT_AMORE       used to detect various spells that change visual of units for aura target
     &AuraEffect::HandleAuraModIncreaseSpeed,                      //171 SPELL_AURA_MOD_SPEED_NOT_STACK
     &AuraEffect::HandleAuraModIncreaseMountedSpeed,               //172 SPELL_AURA_MOD_MOUNTED_SPEED_NOT_STACK
     &AuraEffect::HandleUnused,                                    //173 unused (4.3.4) no spells, old SPELL_AURA_ALLOW_CHAMPION_SPELLS  only for Proclaim Champion spell
@@ -1582,6 +1582,40 @@ void AuraEffect::HandleModStealthLevel(AuraApplication const* aurApp, uint8 mode
     target->UpdateObjectVisibility();
 }
 
+void AuraEffect::HandleDetectAmore(AuraApplication const* aurApp, uint8 mode, bool apply) const
+{
+    if (!(mode & AURA_EFFECT_HANDLE_SEND_FOR_CLIENT_MASK))
+        return;
+
+    Unit* target = aurApp->GetTarget();
+
+    if (target->GetTypeId() != TYPEID_PLAYER)
+        return;
+
+    if (apply)
+    {
+        if (Player* playerTarget = target->ToPlayer())
+        {
+            playerTarget->AddAuraVision(PlayerFieldByte2Flags(1 << (GetMiscValue() - 1)));
+        }
+    }
+    else
+    {
+        if (target->HasAuraType(SPELL_AURA_DETECT_AMORE))
+        {
+            Unit::AuraEffectList const& amoreAuras = target->GetAuraEffectsByType(SPELL_AURA_DETECT_AMORE);
+            for (Unit::AuraEffectList::const_iterator i = amoreAuras.begin(); i != amoreAuras.end(); ++i)
+            {
+                if (GetMiscValue() == (*i)->GetMiscValue())
+                    return;
+            }
+        }
+
+        if (Player* playerTarget = target->ToPlayer())
+            playerTarget->RemoveAuraVision(PlayerFieldByte2Flags(1 << (GetMiscValue() - 1)));
+    }
+}
+
 void AuraEffect::HandleSpiritOfRedemption(AuraApplication const* aurApp, uint8 mode, bool apply) const
 {
     if (!(mode & AURA_EFFECT_HANDLE_REAL))
diff --git a/src/server/game/Spells/Auras/SpellAuraEffects.h b/src/server/game/Spells/Auras/SpellAuraEffects.h
index 7b74320bdef..a85879111b3 100644
--- a/src/server/game/Spells/Auras/SpellAuraEffects.h
+++ b/src/server/game/Spells/Auras/SpellAuraEffects.h
@@ -150,6 +150,7 @@ class TC_GAME_API AuraEffect
         void HandleModStealth(AuraApplication const* aurApp, uint8 mode, bool apply) const;
         void HandleModStealthLevel(AuraApplication const* aurApp, uint8 mode, bool apply) const;
         void HandleModStealthDetect(AuraApplication const* aurApp, uint8 mode, bool apply) const;
+        void HandleDetectAmore(AuraApplication const* aurApp, uint8 mode, bool apply) const;
         void HandleSpiritOfRedemption(AuraApplication const* aurApp, uint8 mode, bool apply) const;
         void HandleAuraGhost(AuraApplication const* aurApp, uint8 mode, bool apply) const;
         void HandlePhase(AuraApplication const* aurApp, uint8 mode, bool apply) const;