Setup map system / navigation - create the "viewport" concept and only add children to the stage / change their sounds once they are in range of the viewport
Change movement of character


Utilities for more natural motion

generate random number between 0 and 9 and add it to the base
90
8[0]
7[0]
6[0]

A TSV file reader: (and an authoring tool) - for 2 and 1 dimensional files

0	0
98	64
78	65