scale_pos -> pos_to_tinypos.
possibly_holds_an_item is never read.
keyscan_cancel -> keyscan_break.
$AFDF seems to be collision detection routine, name it so.
zoombox_2 -> zoombox_draw.
reset_B2FC -> reset_outdoors.
called_from_main_loop_7 -> spawn_characters.
called_from_main_loop_6 -> purge_characters.