make timer countdown function

ckingbailey / interval-timer_mobile

React Native interval timer for getting swole

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Open ckingbailey opened 6 years ago

ckingbailey commented 6 years ago

Make the basic countdown functionality that will be used by Intervals

when Interval count reaches 0, Interval tells Timer, Timer fires next Interval.countdown()
Interval wants some kind of visual-audio signal that it's done
likewise Timer wants some kind of signal that it's finished

ckingbailey commented 6 years ago

TODO: display this.state.curTimer.curInterval.count

TODO: signal when current interval is finished

TODO: signal when current timer is finished