Fix creatures being immune to spells that bypass immunities.

Author: ratkosrb

src/game/Objects/Creature.cpp

@@ -2365,7 +2365,7 @@ void Creature::ForcedDespawn(uint32 msTimeToDespawn /*= 0*/, uint32 secsTimeToRe
 
 bool Creature::IsImmuneToSpell(SpellEntry const* spellInfo, bool castOnSelf) const
 {
-    if (!spellInfo)
+    if (!spellInfo || spellInfo->HasAttribute(SPELL_ATTR_NO_IMMUNITIES) || spellInfo->IsIgnoringCasterAndTargetRestrictions())
         return false;
 
     if (!castOnSelf)
@@ -2377,28 +2377,14 @@ bool Creature::IsImmuneToSpell(SpellEntry const* spellInfo, bool castOnSelf) con
             return true;
     }
 
-    // HACK!
-    if (IsWorldBoss())
-    {
-        if (spellInfo->IsFitToFamily<SPELLFAMILY_HUNTER, CF_HUNTER_SCORPID_STING>())
-            return true;
-
-#if SUPPORTED_CLIENT_BUILD > CLIENT_BUILD_1_8_4
-        switch (spellInfo->Id)
-        {
-            case 67:              // Vindication
-            case 26017:
-            case 26018:
-                return true;
-        }
-#endif
-    }
-
     return Unit::IsImmuneToSpell(spellInfo, castOnSelf);
 }
 
 bool Creature::IsImmuneToDamage(SpellSchoolMask meleeSchoolMask, SpellEntry const* spellInfo) const
 {
+    if (spellInfo && (spellInfo->HasAttribute(SPELL_ATTR_NO_IMMUNITIES) || spellInfo->IsIgnoringCasterAndTargetRestrictions()))
+        return false;
+
     if (GetCreatureInfo()->school_immune_mask & meleeSchoolMask)
         return true;
 
@@ -2407,6 +2393,9 @@ bool Creature::IsImmuneToDamage(SpellSchoolMask meleeSchoolMask, SpellEntry cons
 
 bool Creature::IsImmuneToSpellEffect(SpellEntry const* spellInfo, SpellEffectIndex index, bool castOnSelf) const
 {
+    if (spellInfo->IsIgnoringCasterAndTargetRestrictions())
+        return false;
+
     if (!castOnSelf && spellInfo->EffectMechanic[index] && GetCreatureInfo()->mechanic_immune_mask & (1 << (spellInfo->EffectMechanic[index] - 1)))
         return true;