Core/Creature: merged creature extra flag for offhand attacks

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

@@ -5560,9 +5560,10 @@ bool Unit::Attack(Unit* victim, bool meleeAttack)
         SetUInt32Value(UNIT_NPC_EMOTESTATE, EMOTE_ONESHOT_NONE);
     }
 
-    // delay offhand weapon attack to next attack time
+    // delay offhand weapon attack by 50% of the base attack time
     if (haveOffhandWeapon() && GetTypeId() != TYPEID_PLAYER)
-        resetAttackTimer(OFF_ATTACK);
+        setAttackTimer(OFF_ATTACK, std::max(getAttackTimer(OFF_ATTACK), getAttackTimer(BASE_ATTACK) + uint32(CalculatePct(GetFloatValue(UNIT_FIELD_BASEATTACKTIME), 50))));
+
 
     if (meleeAttack)
         SendMeleeAttackStart(victim);