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Only backgrounds at first, I might beable to add FG1 later. And yep the unused grid blocks should be fine. Just tested it out now and it seems to work although it can go a bit strange.. each cam has an ID, I think new cams need new Id's otherwise it can cause the screens to loop. See screen shot for a working example 
Here I dragged the floor collision item for the first screen all the way to the right, then moved the first screens left wall into the newly added screen on the left. It also need a pre loader and zone Id adding. |
So as long as you add the ability to set screen ids for cams then it should work without looping?