Hang on, do you mean all action?Yep, all story action, not just sex. This is what's known as a Bottle Episode, where everything takes place in a single locale (in this case, a room). I think the best example of this would be the Twilight Zone episode, "Five Characters in Search of an Exit", which took place almost entirely in a single cylindrical "room". (There are better examples; that was just the one that came to mind.) That's the kind of thing we're looking at here.
That said, you can refer to events outside the room, within limits. Brief references, like, "How did she get here? She had been walking to the shops moments ago." are fine, but flashbacks are not.
What are you counting as a room?As I said, anywhere that has a full compliment of walls, a ceiling, a floor, and at least one door in and out of the room. This is a pretty straightforward, but then, there are people who'll try and bend the rules. Fortunately, I did have a think about this possibility when I wrote it up, so here are examples of what I will accept as "loophole abuses":
- The inside of an American-style barn. If the loft is an open loft, it can be included as well. Just no entering any closed storage or management areas in the barn.
- A caravan or motor home (bathroom area is a separate room).
- As I stated in the top post, a warehouse storage area would count, as long as you don't enter offices.
- The passenger area of an airplane, or the cockpit, or the steward's area, or the bathroom. (Each are separate rooms.)
What won't be counted as a room includes:
- Boxes and standalone cages. (Cage-like jail cells are fine.)
- Covered outdoor areas. These lack walls. (This also includes marquees and standalone hay stores, which usually lack walls also.)
