From e7448794057733f04d79319882323b7cebb36c6c Mon Sep 17 00:00:00 2001
From: Aqua Deus <95978183+aquadeus@users.noreply.github.com>
Date: Thu, 21 Aug 2025 23:13:51 +0200
Subject: [PATCH] Scripts/Spells: Implement dh talent Critical Chaos (#30752)

---
 .../world/master/2025_08_21_00_world.sql      |  3 +++
 src/server/scripts/Spells/spell_dh.cpp        | 26 +++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 sql/updates/world/master/2025_08_21_00_world.sql

diff --git a/sql/updates/world/master/2025_08_21_00_world.sql b/sql/updates/world/master/2025_08_21_00_world.sql
new file mode 100644
index 00000000000..73eb6e20289
--- /dev/null
+++ b/sql/updates/world/master/2025_08_21_00_world.sql
@@ -0,0 +1,3 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`='spell_dh_critical_chaos';
+INSERT INTO `spell_script_names` (`spell_id`,`ScriptName`) VALUES
+(320413,'spell_dh_critical_chaos');
diff --git a/src/server/scripts/Spells/spell_dh.cpp b/src/server/scripts/Spells/spell_dh.cpp
index d3d307bb75e..2f756e609af 100644
--- a/src/server/scripts/Spells/spell_dh.cpp
+++ b/src/server/scripts/Spells/spell_dh.cpp
@@ -534,6 +534,31 @@ class spell_dh_collective_anguish_eye_beam : public AuraScript
     }
 };
 
+// 320413 - Critical Chaos
+class spell_dh_critical_chaos : public AuraScript
+{
+    void CalcAmount(AuraEffect const* /*aurEff*/, int32& amount, bool const& /*canBeRecalculated*/) const
+    {
+        if (AuraEffect const* amountHolder = GetEffect(EFFECT_1))
+        {
+            float critChanceDone = GetUnitOwner()->GetUnitCriticalChanceDone(BASE_ATTACK);
+            amount = CalculatePct(critChanceDone, amountHolder->GetAmount());
+        }
+    }
+
+    void UpdatePeriodic(AuraEffect const* aurEff) const
+    {
+        if (AuraEffect* bonus = GetEffect(EFFECT_0))
+            bonus->RecalculateAmount(aurEff);
+    }
+
+    void Register() override
+    {
+        DoEffectCalcAmount += AuraEffectCalcAmountFn(spell_dh_critical_chaos::CalcAmount, EFFECT_0, SPELL_AURA_ADD_FLAT_MODIFIER);
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_dh_critical_chaos::UpdatePeriodic, EFFECT_1, SPELL_AURA_PERIODIC_DUMMY);
+    }
+};
+
 // Called by 198013 - Eye Beam
 class spell_dh_cycle_of_hatred : public SpellScript
 {
@@ -1718,6 +1743,7 @@ void AddSC_demon_hunter_spell_scripts()
     RegisterSpellScript(spell_dh_chaos_theory_drop_charge);
     RegisterSpellScript(spell_dh_chaotic_transformation);
     RegisterSpellScript(spell_dh_charred_warblades);
+    RegisterSpellScript(spell_dh_critical_chaos);
     RegisterSpellScript(spell_dh_collective_anguish);
     RegisterSpellScript(spell_dh_collective_anguish_eye_beam);
     RegisterSpellScript(spell_dh_cycle_of_hatred);