// Caution: The subjective values are strong with this one
private static double spacingWeight(double distance, VitaruDifficultyCalculator.DifficultyType type)
{
switch (type)
{
case VitaruDifficultyCalculator.DifficultyType.Speed:
if (distance > single_spacing_threshold)
{
return(2.5);
}
else if (distance > stream_spacing_threshold)
{
return(1.6 + 0.9 * (distance - stream_spacing_threshold) / (single_spacing_threshold - stream_spacing_threshold));
}
else if (distance > almost_diameter)
{
return(1.2 + 0.4 * (distance - almost_diameter) / (stream_spacing_threshold - almost_diameter));
}
else if (distance > almost_diameter / 2)
{
return(0.95 + 0.25 * (distance - almost_diameter / 2) / (almost_diameter / 2));
}
else
{
return(0.95);
}
case VitaruDifficultyCalculator.DifficultyType.Aim:
return(Math.Pow(distance, 0.99));
}
Debug.Assert(false, "Invalid vitaru difficulty hit object type.");
return(0);
}
private void calculateSpecificStrain(VitaruHitObjectDifficulty previousHitObject, VitaruDifficultyCalculator.DifficultyType type, double timeRate)
{
double addition = 0;
double timeElapsed = (BaseHitObject.StartTime - previousHitObject.BaseHitObject.StartTime) / timeRate;
double decay = Math.Pow(DECAY_BASE[(int)type], timeElapsed / 1000);
if (BaseHitObject.Type == HitObjectType.Enemy)
{
addition = spacingWeight(DistanceTo(previousHitObject), type) * spacing_weight_scaling[(int)type];
}
// You will never find maps that require this amongst ranked maps.
addition /= Math.Max(timeElapsed, 50);
Strains[(int)type] = previousHitObject.Strains[(int)type] * decay + addition;
}