Scripts/Spells: Implement dh talent "Painbringer" (TrinityCore#31501)

Author: aquadeus

sql/updates/world/master/2026_01_17_01_world.sql

@@ -0,0 +1,8 @@
+DELETE FROM `spell_proc` WHERE `SpellId` IN (207387);
+INSERT INTO `spell_proc` (`SpellId`,`SchoolMask`,`SpellFamilyName`,`SpellFamilyMask0`,`SpellFamilyMask1`,`SpellFamilyMask2`,`SpellFamilyMask3`,`ProcFlags`,`ProcFlags2`,`SpellTypeMask`,`SpellPhaseMask`,`HitMask`,`AttributesMask`,`DisableEffectsMask`,`ProcsPerMinute`,`Chance`,`Cooldown`,`Charges`) VALUES
+(207387,0x00,107,0x00100000,0x00000000,0x00000000,0x00000000,0x4000,0x0,0x2,0x2,0x0,0x2,0x0,0,100,0,0); -- Painbringer
+
+DELETE FROM `spell_script_names` WHERE `ScriptName` IN ('spell_dh_painbringer', 'spell_dh_painbringer_reduce_damage');
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(207387, 'spell_dh_painbringer'),
+(212988, 'spell_dh_painbringer_reduce_damage');

src/server/scripts/Spells/spell_dh.cpp

@@ -164,6 +164,8 @@ enum DemonHunterSpells
     SPELL_DH_NEMESIS_HUMANOIDS                     = 208605,
     SPELL_DH_NEMESIS_MECHANICALS                   = 208613,
     SPELL_DH_NEMESIS_UNDEAD                        = 208614,
+    SPELL_DH_PAINBRINGER_DUMMY                     = 225413,
+    SPELL_DH_PAINBRINGER_STACK                     = 212988,
     SPELL_DH_RAIN_FROM_ABOVE                       = 206803,
     SPELL_DH_RAIN_OF_CHAOS                         = 205628,
     SPELL_DH_RAIN_OF_CHAOS_IMPACT                  = 232538,
@@ -1498,6 +1500,66 @@ class spell_dh_monster_rising : public AuraScript
     }
 };
 
+// 207387 - Painbringer
+class spell_dh_painbringer : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_DH_PAINBRINGER_STACK });
+    }
+
+    void HandleProc(ProcEventInfo const& eventInfo) const
+    {
+        Unit* target = eventInfo.GetActor();
+        target->CastSpell(target, SPELL_DH_PAINBRINGER_STACK, CastSpellExtraArgsInit{
+            .TriggerFlags = TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR,
+            .TriggeringSpell = eventInfo.GetProcSpell()
+        });
+    }
+
+    void Register() override
+    {
+        OnProc += AuraProcFn(spell_dh_painbringer::HandleProc);
+    }
+};
+
+// 212988 - Painbringer
+class spell_dh_painbringer_reduce_damage : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spell*/) override
+    {
+        return ValidateSpellInfo({ SPELL_DH_PAINBRINGER_DUMMY });
+    }
+
+    void OnApply(AuraEffect const* aurEff, AuraEffectHandleModes mode) const
+    {
+        Unit* target = GetTarget();
+
+        if (mode & AURA_EFFECT_HANDLE_REAL)
+            target->CastSpell(target, SPELL_DH_PAINBRINGER_DUMMY, CastSpellExtraArgsInit{
+                .TriggerFlags = TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR,
+                .TriggeringAura = aurEff
+            });
+
+        target->m_Events.AddEventAtOffset([self = GetAura()->GetWeakPtr()]
+        {
+            if (Trinity::unique_strong_ref_ptr<Aura> aura = self.lock())
+                aura->ModStackAmount(-1, AURA_REMOVE_BY_EXPIRE, false);
+        }, Milliseconds(GetMaxDuration()));
+    }
+
+    void OnRemove(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/) const
+    {
+        GetTarget()->RemoveAurasDueToSpell(SPELL_DH_PAINBRINGER_DUMMY);
+    }
+
+    void Register() override
+    {
+        AfterEffectApply += AuraEffectApplyFn(spell_dh_painbringer_reduce_damage::OnApply, EFFECT_1, SPELL_AURA_DUMMY, AURA_EFFECT_HANDLE_REAL_OR_REAPPLY_MASK);
+        AfterEffectRemove += AuraEffectRemoveFn(spell_dh_painbringer_reduce_damage::OnRemove, EFFECT_1, SPELL_AURA_DUMMY, AURA_EFFECT_HANDLE_REAL);
+    }
+};
+
 // 188499 - Blade Dance
 // 210152 - Death Sweep
 class spell_dh_blade_dance : public SpellScript
@@ -2238,6 +2300,8 @@ void AddSC_demon_hunter_spell_scripts()
     RegisterSpellScript(spell_dh_know_your_enemy);
     RegisterSpellScript(spell_dh_last_resort);
     RegisterSpellScript(spell_dh_monster_rising);
+    RegisterSpellScript(spell_dh_painbringer);
+    RegisterSpellScript(spell_dh_painbringer_reduce_damage);
     RegisterSpellScript(spell_dh_repeat_decree_conduit);
     RegisterSpellScript(spell_dh_restless_hunter);
     RegisterSpellScript(spell_dh_retaliation);