ActionCondition()

override bool ActionCondition	(	PlayerBase	player,
		ActionTarget	target,
		ItemBase	item )

См. определение в файле ActionExtinguishFireplaceByLiquid.c строка 31

    {
        Object targetObject = target.GetObject();
        
        if (targetObject.IsFireplace())
        {
            FireplaceBase fireplace = FireplaceBase.Cast(targetObject);
            
            if (fireplace.CanExtinguishFire() && !item.IsDamageDestroyed() && (item.GetLiquidType() & (GROUP_LIQUID_BLOOD | LIQUID_WATER | LIQUID_BEER)))
            {
                return !item.GetIsFrozen();
            }
        }
        
        return false;
    }

Перекрестные ссылки ActionTarget, FireplaceBase::CanExtinguishFire(), GROUP_LIQUID_BLOOD, LIQUID_BEER и LIQUID_WATER.