Psychic Link

src/server/scripts/Spells/spell_priest.cpp

@@ -180,6 +180,7 @@ enum PriestSpells
     SPELL_PRIEST_PENANCE_DAMAGE = 47666,
     SPELL_PRIEST_PENANCE_HEALING = 47750,
     SPELL_PRIEST_PHANTOM_REACH = 459559,
+    SPELL_PRIEST_PSYCHIC_LINK = 199484,
     SPELL_PRIEST_POWER_LEECH_MINDBENDER_MANA = 123051,
     SPELL_PRIEST_POWER_LEECH_MINDBENDER_INSANITY = 200010,
     SPELL_PRIEST_POWER_LEECH_SHADOWFIEND_MANA = 343727,
@@ -5304,6 +5305,101 @@ class spell_pri_tentacle_slam : public SpellScript
     }
 };
 
+// 199484 - Psychic Link
+// Direct damage spells also inflict $s1% of that damage on every other target that is affected by
+// the caster's Vampiric Touch. The talent itself is a dummy aura, so the copy is driven by its proc.
+class spell_pri_psychic_link : public AuraScript
+{
+    // The radius is read by the client from 199486 ($199486A2) which exposes no radius field here,
+    // so the retail value is used instead
+    static constexpr float PSYCHIC_LINK_RADIUS = 10.0f;
+
+    // Copied damage is dealt with the triggering spell, which runs procs again. Without this the
+    // passive would keep copying the copy, so nested calls are rejected while a copy is in flight
+    bool _processing = false;
+
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo
+        ({
+            SPELL_PRIEST_VAMPIRIC_TOUCH,
+            SPELL_PRIEST_SHADOW_WORD_PAIN,
+            SPELL_PRIEST_SHADOWY_APPARITION_MISSILE
+        });
+    }
+
+    bool CheckProc(ProcEventInfo& eventInfo)
+    {
+        if (_processing)
+            return false;
+
+        SpellInfo const* spellInfo = eventInfo.GetSpellInfo();
+        if (!spellInfo)
+            return false;
+
+        // Only direct damage is copied, never the periodic ticks
+        if (eventInfo.GetDamageInfo()->GetDamageType() != DIRECT_DAMAGE)
+            return false;
+
+        // The talent explicitly does not copy damage from these spells
+        switch (spellInfo->Id)
+        {
+            case SPELL_PRIEST_SHADOW_WORD_PAIN:
+            case SPELL_PRIEST_VAMPIRIC_TOUCH:
+            case SPELL_PRIEST_SHADOWY_APPARITION_MISSILE:
+                return false;
+            default:
+                break;
+        }
+
+        return true;
+    }
+
+    void HandleProc(AuraEffect const* aurEff, ProcEventInfo& eventInfo)
+    {
+        Unit* caster = GetCaster();
+        if (!caster)
+            return;
+
+        DamageInfo* damageInfo = eventInfo.GetDamageInfo();
+        SpellInfo const* spellInfo = eventInfo.GetSpellInfo();
+        if (!damageInfo || !spellInfo || !damageInfo->GetDamage())
+            return;
+
+        SpellEffectValue const damage = CalculatePct(damageInfo->GetDamage(), aurEff->GetAmount());
+        if (damage <= 0)
+            return;
+
+        Unit* triggerTarget = damageInfo->GetVictim();
+        SpellSchoolMask const schoolMask = damageInfo->GetSchoolMask();
+
+        // Every other enemy around the caster that carries the caster's own Vampiric Touch
+        std::list<Unit*> targets;
+        Trinity::AnyUnfriendlyUnitInObjectRangeCheck check(caster, caster, PSYCHIC_LINK_RADIUS);
+        Trinity::UnitListSearcher<Trinity::AnyUnfriendlyUnitInObjectRangeCheck> searcher(caster, targets, check);
+        Cell::VisitAllObjects(caster, searcher, PSYCHIC_LINK_RADIUS);
+
+        for (Unit* target : targets)
+        {
+            if (target == triggerTarget)
+                continue;
+
+            if (!target->HasAura(SPELL_PRIEST_VAMPIRIC_TOUCH, caster->GetGUID()))
+                continue;
+
+            _processing = true;
+            caster->DealDamage(caster, target, uint32(damage), nullptr, DIRECT_DAMAGE, schoolMask, spellInfo);
+            _processing = false;
+        }
+    }
+
+    void Register() override
+    {
+        DoCheckProc += AuraCheckProcFn(spell_pri_psychic_link::CheckProc);
+        OnEffectProc += AuraEffectProcFn(spell_pri_psychic_link::HandleProc, EFFECT_0, SPELL_AURA_DUMMY);
+    }
+};
+
 //WowCommunity
 // 1253590 - Master the Darkness
 class spell_pri_master_the_darkness : public AuraScript
@@ -5633,6 +5729,7 @@ void AddSC_priest_spell_scripts()
     //WowCommunity
     RegisterSpellScript(spell_pri_master_the_darkness);
     RegisterSpellScript(spell_pri_tentacle_slam);
+    RegisterSpellScript(spell_pri_psychic_link);
     RegisterSpellScript(spell_pri_idol_of_cthun);
     RegisterSpellScript(spell_pri_idol_of_cthun_trigger);
     RegisterSpellScript(spell_pri_idol_of_cthun_periodic_aura);