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;
}
}
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;
}
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);
}