ActionCondition()

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

См. определение в файле ActionBuildOven.c строка 38

    {   
        //Action not allowed if player has broken legs
        if (player.GetBrokenLegs() == eBrokenLegs.BROKEN_LEGS)
            return false;
        
        Object target_object = target.GetObject();
            
        if ( target_object && target_object.IsFireplace() )
        {
            FireplaceBase fireplace_target = FireplaceBase.Cast( target_object );
            
            if ( fireplace_target.IsBaseFireplace() && fireplace_target.CanBuildOven() )
            {
                return true;
            }
        }
        
        return false;
    }

Перекрестные ссылки ActionTarget() и FireplaceBase::IsBaseFireplace().