Spell: Fix spells with negative SPELL_EFFECT_THREAT and SPELL_ATTR_EX_NO_THREAT

Author: killerwife

src/game/Combat/ThreatManager.cpp

@@ -48,25 +48,8 @@ float ThreatCalcHelper::CalcThreat(Unit* hatedUnit, Unit* hatingUnit, float thre
 
     if (threatSpell)
     {
-        // Keep exception to calculate the real threat for SPELL_AURA_MOD_TOTAL_THREAT
-        bool HasExceptionForNoThreat = false;
-        for (int i = 0; i < MAX_EFFECT_INDEX; i++)
-        {
-            if (threatSpell->EffectApplyAuraName[i] == SPELL_AURA_MOD_TOTAL_THREAT && threatSpell->EffectBasePoints[i] < 0)
-            {
-                HasExceptionForNoThreat = true;
-                break;
-            }
-        }
-
-        if (!HasExceptionForNoThreat)
-        {
-            if (threatSpell->HasAttribute(SPELL_ATTR_EX_NO_THREAT))
-                return 0.0f;
-
-            if (Player* modOwner = hatedUnit->GetSpellModOwner())
-                modOwner->ApplySpellMod(threatSpell->Id, SPELLMOD_THREAT, threat);
-        }
+        if (Player* modOwner = hatedUnit->GetSpellModOwner())
+            modOwner->ApplySpellMod(threatSpell->Id, SPELLMOD_THREAT, threat);
 
         if (crit)
             threat *= hatedUnit->GetTotalAuraMultiplierByMiscMask(SPELL_AURA_MOD_CRITICAL_THREAT, schoolMask);
@@ -502,7 +485,7 @@ void ThreatManager::addThreat(Unit* victim, float threat, bool crit, SpellSchool
             {
                 float redirectedThreat = threat * redirectedMod;
                 totalMod += redirectedMod;
-                addThreatDirectly(redirectedTarget, redirectedThreat);
+                addThreatDirectly(redirectedTarget, redirectedThreat, false);
             }
         }
         if (totalMod != 0.f)
@@ -512,10 +495,10 @@ void ThreatManager::addThreat(Unit* victim, float threat, bool crit, SpellSchool
         }
     }
 
-    addThreatDirectly(victim, calculatedThreat);
+    addThreatDirectly(victim, calculatedThreat, threatSpell && threatSpell->HasAttribute(SPELL_ATTR_EX_NO_THREAT));
 }
 
-void ThreatManager::addThreatDirectly(Unit* victim, float threat)
+void ThreatManager::addThreatDirectly(Unit* victim, float threat, bool noNew)
 {
     HostileReference* ref = iThreatContainer.addThreat(victim, threat);
     // Ref is online
@@ -525,7 +508,7 @@ void ThreatManager::addThreatDirectly(Unit* victim, float threat)
     else
         ref = iThreatOfflineContainer.addThreat(victim, threat);
 
-    if (!ref)                                               // there was no ref => create a new one
+    if (!ref && !noNew) // there was no ref => create a new one
     {
         HostileReference* hostileReference = new HostileReference(victim, this, 0); // threat has to be 0 here
         iThreatContainer.addReference(hostileReference);

src/game/Combat/ThreatManager.h

@@ -204,7 +204,7 @@ class ThreatManager
         void addThreat(Unit* victim, float threat) { addThreat(victim, threat, false, SPELL_SCHOOL_MASK_NONE, nullptr, false); }
 
         // add threat as raw value (ignore redirections and expection all mods applied already to it
-        void addThreatDirectly(Unit* victim, float threat);
+        void addThreatDirectly(Unit* victim, float threat, bool noNew);
 
         void modifyThreatPercent(Unit* victim, int32 threatPercent); // -101 removes whole ref, -100 sets threat to 0, rest modifies it
         void modifyAllThreatPercent(int32 threatPercent);

src/game/Spells/SpellEffects.cpp

@@ -7664,7 +7664,7 @@ void Spell::EffectTaunt(SpellEffectIndex eff_idx)
     if (unitTarget->CanHaveThreatList())
     {
         float addedThreat = unitTarget->getThreatManager().GetHighestThreat() - unitTarget->getThreatManager().getThreat(m_caster);
-        unitTarget->getThreatManager().addThreatDirectly(m_caster, addedThreat);
+        unitTarget->getThreatManager().addThreatDirectly(m_caster, addedThreat, false);
         unitTarget->getThreatManager().setCurrentVictimByTarget(m_caster); // force changes the target to caster of taunt
     }
     // Units without threat lists but with AI are susceptible to attack target interference by taunt effect:
@@ -7975,14 +7975,6 @@ void Spell::EffectThreat(SpellEffectIndex /*eff_idx*/)
     if (!unitTarget->CanHaveThreatList())
         return;
 
-    if (!m_caster->IsInCombat() || !unitTarget->IsInCombat())
-    {
-        if (unitTarget->AI())
-            unitTarget->AI()->AttackStart(m_caster);
-        else
-            unitTarget->EngageInCombatWith(m_caster);
-    }
-
     unitTarget->AddThreat(m_caster, float(damage), false, GetSpellSchoolMask(m_spellInfo), m_spellInfo);
 }