public static void MeltSnowOverDay(WeatherData weather)
{
double meltTemp = 30;
if (weather.Precipitation.CloudCover == OvercastLevel.None)
{
meltTemp = 24;
}
if (weather.Temperature > meltTemp)
{
double meltRate = weather.Temperature / 1200.0;
double meltAmount = 0;
if (weather.Precipitation.CloudCover == OvercastLevel.None)
{
meltRate *= 1.5;
}
if (DescriptionData.CheckPrecipitationType(weather.Temperature) == PrecipitationType.Rain)
{
meltAmount = (int)weather.Precipitation.Level * weather.Precipitation.Duration * meltRate * 6;
}
else if (DescriptionData.CheckPrecipitationType(weather.Temperature) == PrecipitationType.Sleet)
{
meltAmount = (int)weather.Precipitation.Level * weather.Precipitation.Duration * meltRate * 5;
}
meltAmount += meltRate * 24;
weather.Precipitation.SnowAccumulation = Math.Max(weather.Precipitation.SnowAccumulation - meltAmount, 0);
}
}
public static List <WeatherData> GeneratePrecipitation(DateTime dateTime, List <WeatherData> weatherData)
{
int monthIdx = dateTime.Month - 1;
//double precipChance = PrecipVariation.PRECIP_CHANCE_MONTH[(monthIdx - 1).Mod(PrecipVariation.PRECIP_CHANCE_MONTH.Length)].Lerp(PrecipVariation.PRECIP_CHANCE_MONTH[monthIdx.Mod(PrecipVariation.PRECIP_CHANCE_MONTH.Length)], dateTime.Day / DateTime.DaysInMonth(dateTime.Year, dateTime.Month)) * 100;
double precipChance = PrecipVariation.PRECIP_CHANCE_MONTH.LerpOver(monthIdx, dateTime.Day / DateTime.DaysInMonth(dateTime.Year, dateTime.Month)) * 100;
int chanceRoll = TimedChance.D100.Roll();
if (chanceRoll <= precipChance)
{
int precipRoll = TimedChance.D100.Roll();
int precipChange = 0;
int dayTotal = 1;
int duration = 1;
foreach (PrecipVariation variation in PrecipVariation.PRECIP_VARIATION_TABLE)
{
if (variation.IsWithinRange(precipRoll))
{
precipChange = variation.Precipitiation;
if (variation.DurationUnit == DurationUnits.Days)
{
dayTotal = variation.Duration;
}
else
{
duration = variation.Duration;
}
break;
}
}
WeatherData weather = weatherData[0];
if (weather.Precipitation.Level > 0)
{
precipChange = 1;
}
weather.Precipitation.Level = (PrecipitationLevel)Math.Min((int)weather.Precipitation.Level + precipChange, (int)PrecipitationLevel.Heavy);
weather.Precipitation.CloudCover = OvercastLevel.Heavy;
if (dayTotal == 1)
{
weather.Precipitation.Duration = duration;
}
else
{
weather.Precipitation.Duration = 24;
}
if (DescriptionData.CheckPrecipitationType(weather.Temperature) == PrecipitationType.Snow)
{
weather.Precipitation.SnowAccumulation = PrecipVariation.SNOW_ACCUMULATION[(int)weather.Precipitation.Level].Roll((int)weather.Precipitation.Duration);
}
else if (DescriptionData.CheckPrecipitationType(weather.Temperature) == PrecipitationType.Sleet)
{
weather.Precipitation.SnowAccumulation = PrecipVariation.SNOW_ACCUMULATION[(int)weather.Precipitation.Level].Roll((int)weather.Precipitation.Duration) * 0.5;
}
if (weather.Wind.Level >= WindLevel.Strong && weather.Precipitation.Level >= PrecipitationLevel.Heavy)
{
if (DescriptionData.CheckPrecipitationType(weather.Temperature) == PrecipitationType.Snow && weather.Wind.Level >= WindLevel.Severe)
{
weather.Precipitation.Level = PrecipitationLevel.Storm;
}
else if (DescriptionData.CheckPrecipitationType(weather.Temperature) != PrecipitationType.Snow)
{
weather.Precipitation.Level = PrecipitationLevel.Storm;
}
}
for (int i = 1; i < dayTotal; i++)
{
if (i >= weatherData.Count)
{
weatherData.Add(new WeatherData());
}
weatherData[i].Precipitation.Level = (PrecipitationLevel)Math.Min(Math.Max((int)weather.Precipitation.Level + precipChange - i, 0), (int)PrecipitationLevel.Heavy);
weatherData[i].Precipitation.CloudCover = OvercastLevel.Heavy;
weatherData[i].Precipitation.Duration = 24;
}
return(weatherData);
}
else
{
int cloudRoll = TimedChance.D100.Roll();
WeatherData weather = weatherData[0];
foreach (PrecipVariation variation in PrecipVariation.OVERCAST_VARIATION_TABLE)
{
if (variation.IsWithinRange(cloudRoll))
{
weather.Precipitation.CloudCover = (OvercastLevel)variation.Precipitiation;
break;
}
}
double overcastTempChange = TemperatureVariation.OVERCAST_TEMP_CHANGE_MONTH.LerpOver(monthIdx, dateTime.Day / DateTime.DaysInMonth(dateTime.Year, dateTime.Month));
if (weather.Precipitation.CloudCover > OvercastLevel.None)
{
weather.Temperature += overcastTempChange * ((int)weather.Precipitation.CloudCover / (int)OvercastLevel.Heavy);
}
else if (weather.Precipitation.CloudCover == OvercastLevel.None)
{
weather.Temperature -= overcastTempChange;
}
}
return(weatherData);
}