Create a minimap

Hi.
So like it's write in the tittle I wanna make a minimap for my game.
I work on a maze type game and I want a map like this one: http://a2.mzstatic.com/us/r30/Purple1/v4/ab/da/34/abda3467-f7f8-b99b-cc95-cfcf7a32b8d1/screen1136x1136.jpeg
A map where we can see the player and the walls of the labyrinthe (I dont wanna make a map where we can see all the maze but just a part of it like on the photo ).
So if you can help me.
Thank you