Core/Spells: Allow overriding aura stack amount from CastCustomSpell

src/server/game/Entities/Unit/Unit.h

@@ -131,6 +131,7 @@ enum SpellValueMod
     SPELLVALUE_BASE_POINT2,
     SPELLVALUE_RADIUS_MOD,
     SPELLVALUE_MAX_TARGETS,
+    SPELLVALUE_AURA_STACK,
 };
 
 typedef std::pair<SpellValueMod, int32>     CustomSpellValueMod;

src/server/game/Spells/Spell.cpp

@@ -1483,6 +1483,9 @@ SpellMissInfo Spell::DoSpellHitOnUnit(Unit *unit, const uint32 effectMask, bool
                 m_originalCaster, (aurSpellInfo == m_spellInfo)? &m_spellValue->EffectBasePoints[0] : &basePoints[0], m_CastItem);
             if (m_spellAura)
             {
+                // Set aura stack amount to desired value
+                m_spellAura->SetStackAmount(m_spellValue->AuraStackAmount);
+
                 // Now Reduce spell duration using data received at spell hit
                 int32 duration = m_spellAura->GetMaxDuration();
                 int32 limitduration = GetDiminishingReturnsLimitDuration(m_diminishGroup, aurSpellInfo);
@@ -7034,7 +7037,7 @@ SpellCastResult Spell::CanOpenLock(uint32 effIndex, uint32 lockId, SkillType& sk
 
 void Spell::SetSpellValue(SpellValueMod mod, int32 value)
 {
-    switch(mod)
+    switch (mod)
     {
         case SPELLVALUE_BASE_POINT0:
             m_spellValue->EffectBasePoints[0] = SpellMgr::CalculateSpellEffectBaseAmount(value, m_spellInfo, 0);
@@ -7051,6 +7054,9 @@ void Spell::SetSpellValue(SpellValueMod mod, int32 value)
         case SPELLVALUE_MAX_TARGETS:
             m_spellValue->MaxAffectedTargets = (uint32)value;
             break;
+        case SPELLVALUE_AURA_STACK:
+            m_spellValue->AuraStackAmount = uint8(value);
+            break;
     }
 }
 

src/server/game/Spells/Spell.h

@@ -239,16 +239,18 @@ class SpellCastTargets
 
 struct SpellValue
 {
-    explicit SpellValue(SpellEntry const *proto)
+    explicit SpellValue(SpellEntry const* proto)
     {
         for (uint32 i = 0; i < MAX_SPELL_EFFECTS; ++i)
             EffectBasePoints[i] = proto->EffectBasePoints[i];
         MaxAffectedTargets = proto->MaxAffectedTargets;
         RadiusMod = 1.0f;
+        AuraStackAmount = 1;
     }
     int32     EffectBasePoints[3];
     uint32    MaxAffectedTargets;
     float     RadiusMod;
+    uint8     AuraStackAmount;
 };
 
 enum SpellState

src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp

@@ -257,7 +257,7 @@ class boss_professor_putricide : public CreatureScript
                         // no possible aura seen in sniff adding the aurastate
                         summon->SetFlag(UNIT_FIELD_AURASTATE, 1 << (AURA_STATE_UNKNOWN22 - 1));
                         summon->CastSpell(summon, SPELL_GASEOUS_BLOAT_PROC, true);
-                        summon->CastSpell(summon, SPELL_GASEOUS_BLOAT, false);
+                        summon->CastCustomSpell(SPELL_GASEOUS_BLOAT, SPELLVALUE_AURA_STACK, 10, summon, false);
                         summon->SetReactState(REACT_PASSIVE);
                         return;
                     case NPC_VOLATILE_OOZE:
@@ -710,22 +710,6 @@ class spell_putricide_gaseous_bloat : public SpellScriptLoader
     public:
         spell_putricide_gaseous_bloat() : SpellScriptLoader("spell_putricide_gaseous_bloat") { }
 
-        class spell_putricide_gaseous_bloat_SpellScript : public SpellScript
-        {
-            PrepareSpellScript(spell_putricide_gaseous_bloat_SpellScript);
-
-            void ModAuraStack()
-            {
-                if (Aura* aur = GetHitAura())
-                    aur->SetStackAmount(10);
-            }
-
-            void Register()
-            {
-                AfterHit += SpellHitFn(spell_putricide_gaseous_bloat_SpellScript::ModAuraStack);
-            }
-        };
-
         class spell_putricide_gaseous_bloat_AuraScript : public AuraScript
         {
             PrepareAuraScript(spell_putricide_gaseous_bloat_AuraScript);
@@ -745,11 +729,6 @@ class spell_putricide_gaseous_bloat : public SpellScriptLoader
             }
         };
 
-        SpellScript* GetSpellScript() const
-        {
-            return new spell_putricide_gaseous_bloat_SpellScript();
-        }
-
         AuraScript* GetAuraScript() const
         {
             return new spell_putricide_gaseous_bloat_AuraScript();