Easiest way to know if you’re lucid dreaming is to try some magic abilities. I usually try flying out of the window from room I were. This hasn’t failed me yet. And anon definitely wouldn’t get into this awkward situation with this either.
(only half of this is a joke)
Most early 3d and sort of ps2 era games didn’t have leisure to put too much extra elements into environment, most of what you saw was interactable, so highlighting wasn’t all that needed. Sure there were games badly designed and unintuitive, but it’s still weird to me how highlighting became a norm / necessity.