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yeah,i always wondered whats behind them  ,yeah some parts in rf when you look the floor isnt quite merged..wierd |
It could be that each screen had its camera adjusted upwards or downwards slightly to keep the more used areas more centred. For example, you know the screen featured here with the electric barrier? The upper platform has nothing on it. It's just the starting point for that screen - the player wants to focus on the lower platform, so the camera is panned down a little so that the lower platform is slightly more centred. It's only adjusted by like 10pixels, but this can make a difference. Instead of cramming everything into the bottom of the screen, they slightly raise the floors towards the centre... now someone's gonna come along and prove me wrong :P
EDIT: A better example are the screens with the elevating platforms. The camera is adjusted to get all the elevating platform on the screen. There's only a lower platform too so its shifted upwards towards the centre.