Scale number box = 0
a piece of code to never go below zero.
ie. if there are five or more transitions (shakes/movements) per second then ADD one to scale number.
if there are 4 or fewer transitions per sec then SUBTRACT one from the number.
Delay time in relation to scale number, bottle must be still, counts down, then thunder claps. Realistic to how lightning gathers and builds up, then gets released. Like a carbonated drink in a bottle.
find lightning sound samples. rumbles to thunder claps.