Ah, I see. This is getting complicated
. Any chance you could show a screenshot or just a schematic of how you want it to look. I'm having a bit of trouble wrapping my head around it. There's always the DynamicSprite option if simpler solutions fail. (And that's mainly of interest if you're using the effect in multiple rooms - if it's a single one it'll be easier to simply have two backgrounds and two sets of sprites for the objects).
