This tutorial shows how to create a text image as you approach certain areas. Here, approaching the front door will say "Open" and approaching Marie will say "Talk". When you move away the text will disappear. And this can be used for multiple events with different functions.
It works by overlaying an image with the appropriate text on screen.
This works in normal and first-person views. It only applies to stationary events, not moving events.
The inspiration for this tutorial came from an entry on SGB’s Steam Discussions Forum.