Enter door?

Hello, I’m very new to Unity, and I would like some help with coding. I’m currently making a small 2D side scroller, however I would like the player to be able to enter/exit some buildings. I’ve attached a photo of what I want exactly to happen. Whenever the player walks in front of a “door” then I want an image to appear (which says press the up arrow to enter), and then upon pressing the button the person enters. How would I go about doing this? Please keep in mind that I’m new and have next to no experience with coding. Using C#.

hi,watch this nice and simple tutorial it will help you.it’s very easy :).

part1

https://streamable.com/a8xy5

part2

https://streamable.com/xzuhe

if you needed more help ,leave a comment I will help if I could.