update method

@override void update(double dt)

Implementation

@override
void update(double dt) {
  super.update(dt);
  double overshoot = 1.70158;
  double value = dt;
  if (dt != 0 && dt != 1) {
    value = dt * dt * ((overshoot + 1) * dt - overshoot);
  }
  innerAction.update(value);
}