fix(Scripts/Spells): some LW drums cannot affect targets lvl80 or higher (azerothcore#24611)

Author: sogladev

data/sql/updates/pending_db_world/rev_1770159397406092393.sql

@@ -0,0 +1,10 @@
+--
+-- 35475 Drums of War
+-- 35476 Drums of Battle
+-- 35478 Drums of Restoration
+-- 'Cannot affect targets level 80 or higher.'
+DELETE FROM `spell_script_names` WHERE `spell_id` IN (35475, 35476, 35478);
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(35475, 'spell_gen_filter_party_level_80'),
+(35476, 'spell_gen_filter_party_level_80'),
+(35478, 'spell_gen_filter_party_level_80');

src/server/scripts/Spells/spell_generic.cpp

@@ -5696,6 +5696,28 @@ class spell_gen_whisper_to_controller : public SpellScript
     }
 };
 
+// 35475 Drums of War
+// 35476 Drums of Battle
+// 35478 Drums of Restoration
+class spell_gen_filter_party_level_80 : public SpellScript
+{
+    PrepareSpellScript(spell_gen_filter_party_level_80);
+
+    void FilterTargets(std::list<WorldObject*>& targets)
+    {
+        targets.remove_if([&](WorldObject* target) -> bool
+        {
+            Unit* unit = target->ToUnit();
+            return unit && unit->GetLevel() >= 80;
+        });
+    }
+
+    void Register() override
+    {
+        OnObjectAreaTargetSelect += SpellObjectAreaTargetSelectFn(spell_gen_filter_party_level_80::FilterTargets, EFFECT_ALL, TARGET_UNIT_SRC_AREA_PARTY);
+    }
+};
+
 void AddSC_generic_spell_scripts()
 {
     RegisterSpellScript(spell_silithyst);
@@ -5871,4 +5893,5 @@ void AddSC_generic_spell_scripts()
     RegisterSpellScript(spell_gen_bm_on);
     RegisterSpellScript(spell_gen_bm_off);
     RegisterSpellScript(spell_gen_whisper_to_controller);
+    RegisterSpellScript(spell_gen_filter_party_level_80);
 }