Can()

override bool Can	(	PlayerBase	player,
		ActionTarget	target )

См. определение в файле CCTObject.c строка 37

    {   
        Object targetParent = target.GetParent();
        if (!targetParent || !player)
            return false;
        
        vector playerPosition = player.GetPosition();
        vector playerHeadPos = MiscGameplayFunctions.GetPlayerHeadPosition(player);
        
        vector parentPosition = targetParent.GetPosition();
        
        float distanceRoot = vector.DistanceSq(parentPosition, playerPosition);
        float distanceHead = vector.DistanceSq(parentPosition, playerHeadPos);
        
        return (distanceRoot <= m_MaximalActionDistanceSq || distanceHead <= m_MaximalActionDistanceSq);
    }

Перекрестные ссылки ActionTarget(), vector::DistanceSq() и m_MaximalActionDistanceSq.