Added 6 properties to each interactive node (0PosX, 0PosX, 1PosX, 1PosX,
Color, and Style). The Pos properties are coordinates that allow the
interactive object to display sprites at the position. Color and Style help
identify the sprite to display. Entirely redid parsing of tmx file.
Removed a barrel next to the clinic to make room for RDTs. Also, replaced
a half open door with a fully open door.