No... if you go on the door to the left, the screen goes to the right...

===========================

*Guy is in StartRoom

<Door><StartRoom><Door>

*Guy goes through the Left door
*StartRoom shifts right

<NewRoom><Door><Door><StartRoom>

*StartRoom is now offscreen

<Door><NewRoom><Door>

==========================

Like that... though, I could've explained it better.

I'll try and make a little tutorial thingy..