Scripts/ICC: Fixed Chocking Gas killing Abomination (#25565)

(cherry picked from commit 3c0766df545f4c2d2d045272f37087deccea458d)

2 files changed, 39 insertions, 0 deletions

diff --git a/sql/updates/world/master/2022_02_28_30_world_2020_10_12_00_world.sql b/sql/updates/world/master/2022_02_28_30_world_2020_10_12_00_world.sql
new file mode 100644
index 00000000000..f36f13aa846
--- /dev/null
+++ b/sql/updates/world/master/2022_02_28_30_world_2020_10_12_00_world.sql
@@ -0,0 +1,5 @@
+--
+DELETE FROM `spell_script_names` WHERE `ScriptName`='spell_putricide_choking_gas_filter';
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(71278,'spell_putricide_choking_gas_filter'),
+(71279,'spell_putricide_choking_gas_filter');
diff --git a/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp b/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp
index b9f7575406e..861ab65de60 100644
--- a/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp
+++ b/src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp
@@ -1450,6 +1450,39 @@ class spell_abomination_mutated_transformation : public SpellScript
     }
 };
 
+// 71278, 72460, 72619, 72620 - Choking Gas
+// 71279, 72459, 72621, 72622 - Choking Gas Explosion
+class spell_putricide_choking_gas_filter : public SpellScript
+{
+    PrepareSpellScript(spell_putricide_choking_gas_filter);
+
+    bool Validate(SpellInfo const* /*spell*/) override
+    {
+        return ValidateSpellInfo({ SPELL_OOZE_VARIABLE, SPELL_GAS_VARIABLE });
+    }
+
+    void FilterTargets(std::list<WorldObject*>& targets)
+    {
+        targets.remove_if([](WorldObject* obj)
+        {
+            return obj->ToUnit() && obj->ToUnit()->GetVehicle();
+        });
+    }
+
+    void HandleDispel(SpellEffIndex /*effIndex*/)
+    {
+        Unit* target = GetHitUnit();
+        target->RemoveAurasDueToSpell(SPELL_OOZE_VARIABLE);
+        target->RemoveAurasDueToSpell(SPELL_GAS_VARIABLE);
+    }
+
+    void Register() override
+    {
+        OnObjectAreaTargetSelect += SpellObjectAreaTargetSelectFn(spell_putricide_choking_gas_filter::FilterTargets, EFFECT_ALL, TARGET_UNIT_SRC_AREA_ENTRY);
+        OnEffectHitTarget += SpellEffectFn(spell_putricide_choking_gas_filter::HandleDispel, EFFECT_1, SPELL_EFFECT_APPLY_AURA);
+    }
+};
+
 void AddSC_boss_professor_putricide()
 {
     // Creatures
@@ -1477,4 +1510,5 @@ void AddSC_boss_professor_putricide()
     RegisterSpellScript(spell_putricide_clear_aura_effect_value);
     RegisterSpellScript(spell_stinky_precious_decimate);
     RegisterSpellScript(spell_abomination_mutated_transformation);
+    RegisterSpellScript(spell_putricide_choking_gas_filter);
 }