Continuing on from the last video; adding a hidden Poison counter is a good chance to build a simple switch()...case state machine.
The code: http://eturnerx.com/files/arduino/002_mtg_lifepoisoncounter_eturnerx_arduino_lcd.html
Last video: http://youtu.be/t6Y_GCoSUt4
A more comprehensive example of a state machine is in the next video; A Hunt the Wumpus game conversion.
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