How do I make a metroidish camera?

By this, I mean a camera that will scroll the length of the room (whatever size that may be), then jump to the next one whenever the player goes offscreen. It's hard to explain unless you've played metroid, though I did make some (buggy) progress.

https://docs.google.com/uc?export=download&id=0Bzf-1lL9aOdkVzRtcTNRZTZzbWs

Can I get some help fixing this? I found an example earlier, but you'd have to define the length of the room each time, which is pretty obnoxious and it didn't work all that great. Oh, and if you want to see the bugs I'm talking about, jump between screens for a bit without leaving the borders

Thanks guys.

Similar to the Zelda or megaman scrolling where it follows you and then it stops at a certain point when you are close to the end of the level or a wall. Then jumps tot he next section when you go through the door, etc... there are a few examples of similar setups, search for megaman or zelds scrolling on the forums here.

Cool, thanks for the tip! I found a real good one in the tutorials.