sleep deprived barista

You are a sleepy barista and you need to serve coffee to as many costumers as you can.
You have a wakeness bar that you should keep filled because if you are less awake, then you're more likely to drop cups on the way to costumers.
If you drop too many cups, your boss will fire you. If you sleep for a considerable amount of time, your boss will fire you.
The more you drink coffee, the less your wakeness bar holds until it gets depleted and you need to drink even more coffee or sleep for a bit.
if you look closely youll notice that there are some visual halucinations because of your lack of sleep. will you be able to find them?
move around and look for the costumers in your shop before they leave.