pubstick/timer.pde at master · rmakk/pubstick · GitHub

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int lastUpdatedTimeAt;
final int TIMER_DRAW_INTERVAL = 1000;

class Timer {
  int startTime = 0;
  int stopTime = 0;
  int turnDuration;
  boolean running = false;

  Timer(int tempTurnDuration){
    turnDuration = tempTurnDuration;
  }

  void start(){
    startTime = millis();
    running = true;
  }

  void stop() {
    stopTime = millis();
    running = false;
  }

  int getElapsedTime() {
    int elapsed;
    if(running){
      elapsed = (millis() - startTime);
    }else{
      elapsed = (stopTime - startTime);
    }
    return elapsed;
  }

  int getRemainingTime(){
    return (turnDuration - getElapsedTime());
  }

  int second(){
    return (getRemainingTime() / 1000) % 60;
  }

  int minute(){
    return (getRemainingTime() / (1000*60)) % 60;
  }

  String formattedRemainingTimeForSvg(){
    return nf(minute(), 1)+""+nf(second(), 2);
  }

  String formattedRemainingTime(){
    return nf(minute(), 1)+":"+nf(second(), 2);
  }
}