Challenge: Implementing a World Map

Remember when we said NyetHack would not feature awesome ASCII graphics? Once you successfully complete this challenge, it will!

Players sometimes get lost in the expansive world of NyetHack, and fortunately you have the power to give them a magic map of the realm. Implement a "map" command that displays the player's current position in the game world. For a player currently at the tavern, the game interaction should resemble this:

$>$ Enter your command: map

$00$

$00$

$0$

The $x$ represents the room the player is currently in$.$