ash updated, swc in place of src
systems from non-systems separated
menu changes engine state
simplest ultrasound systems isolated in a single mode
last scanning systems separated
scanner separated in ultrasound mode
defined rock layer separated in ultrasound mode
topographic map separated in ultrasound mode
scanning visualisation separated in ultrasound mode
Ultrasound story is separated as a mode. Now we are ready to start with minigames!