Core/Misc: Fixed resistance calculate for Mutated Transformation and Twilight Bloodbolt (#24717)

Ref: 9f7b464a6aa5b64bf5ec5c0f586853fbc71029c6
- Implemented a new SpellScript hook that allow control Resistance/Absorb amount of a damage spell.

(cherry picked from commit d81a9e5bc3b3e13b47332b3e7817bd0a0b228cbc)

2 files changed, 30 insertions, 10 deletions

diff --git a/src/server/scripts/Northrend/IcecrownCitadel/boss_blood_queen_lana_thel.cpp b/src/server/scripts/Northrend/IcecrownCitadel/boss_blood_queen_lana_thel.cpp
index 758c45b13b5..f4f01d78fff 100644
--- a/src/server/scripts/Northrend/IcecrownCitadel/boss_blood_queen_lana_thel.cpp
+++ b/src/server/scripts/Northrend/IcecrownCitadel/boss_blood_queen_lana_thel.cpp
@@ -860,6 +860,27 @@ class spell_blood_queen_pact_of_the_darkfallen_dmg_target : public SpellScriptLo
         }
 };
 
+// 71446, 71478, 71479, 71480 - Twilight Bloodbolt
+class spell_blood_queen_twilight_bloodbolt : public SpellScript
+{
+    PrepareSpellScript(spell_blood_queen_twilight_bloodbolt);
+
+    void HandleResistance(DamageInfo const& damageInfo, uint32& resistAmount, int32& /*absorbAmount*/)
+    {
+        Unit* caster = damageInfo.GetAttacker();;
+        Unit* target = damageInfo.GetVictim();
+        uint32 damage = damageInfo.GetDamage();
+        uint32 resistedDamage = Unit::CalcSpellResistedDamage(caster, target, damage, SPELL_SCHOOL_MASK_SHADOW, nullptr);
+        resistedDamage += Unit::CalcSpellResistedDamage(caster, target, damage, SPELL_SCHOOL_MASK_ARCANE, nullptr);
+        resistAmount = resistedDamage;
+    }
+
+    void Register() override
+    {
+        OnCalculateResistAbsorb += SpellOnResistAbsorbCalculateFn(spell_blood_queen_twilight_bloodbolt::HandleResistance);
+    }
+};
+
 class achievement_once_bitten_twice_shy_n : public AchievementCriteriaScript
 {
     public:
@@ -902,6 +923,7 @@ void AddSC_boss_blood_queen_lana_thel()
     new spell_blood_queen_pact_of_the_darkfallen();
     new spell_blood_queen_pact_of_the_darkfallen_dmg();
     new spell_blood_queen_pact_of_the_darkfallen_dmg_target();
+    RegisterSpellScript(spell_blood_queen_twilight_bloodbolt);
     new achievement_once_bitten_twice_shy_n();
     new achievement_once_bitten_twice_shy_v();
 }
diff --git a/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp b/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp
index 0a3939e8046..94717c7dbd2 100644
--- a/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp
+++ b/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp
@@ -1665,21 +1665,19 @@ class spell_abomination_mutated_transformation : public SpellScript
 {
     PrepareSpellScript(spell_abomination_mutated_transformation);
 
-    /* Resist system always pick the min resist value for spells with multiple schools.
-       But following some combat logs of retail, this spell is a exception and need get the sum of both schools. */
-    void HandleResistance(SpellEffIndex /*effIndex*/)
+    void HandleResistance(DamageInfo const& damageInfo, uint32& resistAmount, int32& /*absorbAmount*/)
     {
-        Unit* caster = GetCaster();
-        uint32 damage = GetHitDamage();
-        Unit* target = GetHitUnit();
-        damage -= Unit::CalcSpellResistedDamage(caster, target, GetHitDamage(), SPELL_SCHOOL_MASK_SHADOW, nullptr);
-        damage -= Unit::CalcSpellResistedDamage(caster, target, GetHitDamage(), SPELL_SCHOOL_MASK_NATURE, nullptr);
-        SetHitDamage(damage);
+        Unit* caster = damageInfo.GetAttacker();;
+        Unit* target = damageInfo.GetVictim();
+        uint32 damage = damageInfo.GetDamage();
+        uint32 resistedDamage = Unit::CalcSpellResistedDamage(caster, target, damage, SPELL_SCHOOL_MASK_SHADOW, nullptr);
+        resistedDamage += Unit::CalcSpellResistedDamage(caster, target, damage, SPELL_SCHOOL_MASK_NATURE, nullptr);
+        resistAmount = resistedDamage;
     }
 
     void Register() override
     {
-        OnEffectHitTarget += SpellEffectFn(spell_abomination_mutated_transformation::HandleResistance, EFFECT_0, SPELL_EFFECT_SCHOOL_DAMAGE);
+        OnCalculateResistAbsorb += SpellOnResistAbsorbCalculateFn(spell_abomination_mutated_transformation::HandleResistance);
     }
 };