is that a tent? Were you sleeping outside when this happened?
That's a temporary greenhouse I put up in the winter, to protect my Aloe's.
It's just PVC pipe, with visqueen thrown over it.
The light is a 150 W flood, that I turn on when the temp drops into the 30's.
If you'll notice, there's what looks like a black hole, on the bottom right.
That's one of those throw-away nursery pots, that I cut the bottom out of, then split in half.
That's the entrance for my cats.
That's where they sleep, when it get's cold.
If it's 32° outside, it stays about 75° inside the greenhouse.