This is the thread I pmed you I was gonna make.
For everyone else here's some history, on the last several threads (probably 2) I made, there was heavy discussion about transitions between layouts.
If I remember correctly, in
Tokinsom made showcasing his work in the Construct2 engine, he said he used clamp, lerp with camera scrolling on the door to create that transition.
Since I first saw that video, I've cried, cried and cried some more either begging him to show me how to do that transition, attempting to make that transition myself the way he did it, getting help on the forums to make that transition.
There were suggestions of getting the door to have a bullet behaviour and then making it scroll using detectors, bullet behaviours, viewports and other jazz. Point is that didn't work so well. Then Tokinsom himself made a post with an answer, I couldn't that to work either (either I was too stupid to make sense of it or he made it work where I couldn't).
After that I made a couple threads on which Tokinsom joined on about nagging Ashley (sorry) to make a multi-layout editor, which turns out to be near-impossible on the current engine. We racked our brains and I came up with the idea for a room object that basically later turned into a "Reset Layout x1, x2, y1, y2" thing.
A couple days after that while waiting for Ashley to come out with r189 (which didn't have it, so now waiting for r190 or whatever)
I got an idea of how to recreate Tokinsom's inter-layout transition, and it works.
So there we have it folks! I finally figured out how to do something that imploded my brain thinking about how to do 3-6 months ago!
Feel free to ask questions, I'm honestly just posting this out of sheer joy that I got it to work the way I did