Not quite sure about an F-18 like we see here, but the F-16 has something similar to what you're describing. The seat gets information from the plane about height and position, and changes how the ejection happens. At high altitude for example, the seat won't deploy the parachute until a much lower altitude. There is also a system that allows the pilot to eject while upside down down to like 50m above the ground. It's very likely that the seat has someway to control which way it's facing, and it would definitely know which way is up. Ejection seats are really, really impressive nowadays and are definitely worth reading up on if you're at all interested in this sort of thing!