Code/Battleground Opening a game object(banner) under absorb effects … (#17459)

* Code/Battleground Opening a game object(banner) under absorb effects in battlegrounds should result an interupt

By zwerg, closes #6222

src/server/game/Entities/Unit/Unit.cpp

@@ -624,6 +624,17 @@ uint32 Unit::DealDamage(Unit* victim, uint32 damage, CleanDamage const* cleanDam
         else
             victim->RemoveAurasWithInterruptFlags(AURA_INTERRUPT_FLAG_TAKE_DAMAGE, 0);
 
+       // interrupt spells with SPELL_INTERRUPT_FLAG_ABORT_ON_DMG on absorbed damage (no dots)
+       if (!damage && damagetype != DOT && cleanDamage && cleanDamage->absorbed_damage)
+           if (victim != this && victim->GetTypeId() == TYPEID_PLAYER)
+               if (Spell* spell = victim->m_currentSpells[CURRENT_GENERIC_SPELL])
+                   if (spell->getState() == SPELL_STATE_PREPARING)
+                   {
+                       uint32 interruptFlags = spell->m_spellInfo->InterruptFlags;
+                       if ((interruptFlags & SPELL_INTERRUPT_FLAG_ABORT_ON_DMG) != 0)
+                           victim->InterruptNonMeleeSpells(false);
+                   }
+
         // We're going to call functions which can modify content of the list during iteration over it's elements
         // Let's copy the list so we can prevent iterator invalidation
         AuraEffectList vCopyDamageCopy(victim->GetAuraEffectsByType(SPELL_AURA_SHARE_DAMAGE_PCT));