Gameover to Inn Snippet

[StudioBlue]

I found this gem on a foreign language site. Oddly, I think it was either written by or found by SephirothSpawn. It's a snippet to allow a player to go from the Game Over screen to an Inn of sorts:

def update

�  � if Input.trigger?(Input::C)

�  �  � $game_temp.gameover=false

�  �  � case $game_variables[X]

�  �  �  � when y

�  �  �  � $game_map.setup(map_id)

�  �  �  � $game_player.moveto(map_x, map_y)

�  �  �  � $scene=Scene_Map.new

       $game_map.refresh

�  �  �  � when ...

�  �  � end

�  � end

� end

The problem is that I can't figure out how where the variables are that are passed into the snippet. Where does one predetermine the map_id, map_x, and map_y? And what is case $game_variables