private double computeDifficultyValue(ManiaDifficultyAttributes attributes)
{
double difficultyValue = Math.Pow(5 * Math.Max(1, attributes.StarRating / 0.2) - 4.0, 2.2) / 135.0;
difficultyValue *= 1.0 + 0.1 * Math.Min(1.0, totalHits / 1500.0);
if (scaledScore <= 500000)
{
difficultyValue = 0;
}
else if (scaledScore <= 600000)
{
difficultyValue *= (scaledScore - 500000) / 100000 * 0.3;
}
else if (scaledScore <= 700000)
{
difficultyValue *= 0.3 + (scaledScore - 600000) / 100000 * 0.25;
}
else if (scaledScore <= 800000)
{
difficultyValue *= 0.55 + (scaledScore - 700000) / 100000 * 0.20;
}
else if (scaledScore <= 900000)
{
difficultyValue *= 0.75 + (scaledScore - 800000) / 100000 * 0.15;
}
else
{
difficultyValue *= 0.90 + (scaledScore - 900000) / 100000 * 0.1;
}
return(difficultyValue);
}
private double computeAccuracyValue(double difficultyValue, ManiaDifficultyAttributes attributes)
{
if (attributes.GreatHitWindow <= 0)
{
return(0);
}
// Lots of arbitrary values from testing.
// Considering to use derivation from perfect accuracy in a probabilistic manner - assume normal distribution
double accuracyValue = Math.Max(0.0, 0.2 - (attributes.GreatHitWindow - 34) * 0.006667)
* difficultyValue
* Math.Pow(Math.Max(0.0, scaledScore - 960000) / 40000, 1.1);
return(accuracyValue);
}