Exemple #1
0
int calendar::sunlight() const
{
    //Recent lightning strike has lit the area
    if( g->lightning_active ) {
        return DAYLIGHT_LEVEL;
    }

    int mins = minutes_past_midnight(),
        sunrise_mins = sunrise().minutes_past_midnight(),
        sunset_mins = sunset().minutes_past_midnight();

    int moonlight = 1 + int(moon()) * MOONLIGHT_LEVEL;

    if (mins > sunset_mins + TWILIGHT_MINUTES || mins < sunrise_mins) { // Night
        return moonlight;
    }

    else if (mins >= sunrise_mins && mins <= sunrise_mins + TWILIGHT_MINUTES) {

        double percent = double(mins - sunrise_mins) / TWILIGHT_MINUTES;
        return int( double(moonlight)      * (1. - percent) +
                    double(DAYLIGHT_LEVEL) * percent         );

    } else if (mins >= sunset_mins && mins <= sunset_mins + TWILIGHT_MINUTES) {

        double percent = double(mins - sunset_mins) / TWILIGHT_MINUTES;
        return int( double(DAYLIGHT_LEVEL) * (1. - percent) +
                    double(moonlight)      * percent         );

    } else {
        return DAYLIGHT_LEVEL;
    }
}
Exemple #2
0
int calendar::sunlight()
{
 calendar sunrise_time = sunrise(), sunset_time = sunset();

 int mins = 0, sunrise_mins = 0, sunset_mins = 0;
 mins = minutes_past_midnight();
 sunrise_mins = sunrise_time.minutes_past_midnight();
 sunset_mins = sunset_time.minutes_past_midnight();

 int moonlight = 1 + int(moon()) * MOONLIGHT_LEVEL;

 if (mins > sunset_mins + TWILIGHT_MINUTES || mins < sunrise_mins) // Night
  return moonlight;

 else if (mins >= sunrise_mins && mins <= sunrise_mins + TWILIGHT_MINUTES) {

  double percent = double(mins - sunrise_mins) / TWILIGHT_MINUTES;
  return int( double(moonlight)      * (1. - percent) +
              double(DAYLIGHT_LEVEL) * percent         );

 } else if (mins >= sunset_mins && mins <= sunset_mins + TWILIGHT_MINUTES) {

  double percent = double(mins - sunset_mins) / TWILIGHT_MINUTES;
  return int( double(DAYLIGHT_LEVEL) * (1. - percent) +
              double(moonlight)      * percent         );

 } else
  return DAYLIGHT_LEVEL;
}
Exemple #3
0
bool calendar::is_night() const
{
    int mins         = minutes_past_midnight(),
        sunrise_mins = sunrise().minutes_past_midnight(),
        sunset_mins  = sunset().minutes_past_midnight();

    return (mins > sunset_mins + TWILIGHT_MINUTES || mins < sunrise_mins);
}