private double WeightPV(double UnweightedPV, TimeSpan ChartLength, ChotaikoChartInfo ChartInfo)
{
double WeightedPV = UnweightedPV;
// Average over length
WeightedPV = 1000 * UnweightedPV / ChartLength.TotalMilliseconds;
// Apply strain weight
WeightedPV = Math.Pow(WeightedPV, StrainWeight);
// Apply length bonus
double LengthBonus = -(Math.Pow(LengthWeight, -ChartLength.TotalMilliseconds)) + 1;
WeightedPV *= LengthBonus;
// Apply accuracy bonus
WeightedPV *= AccBonus(ChartInfo.AccValue);
// Apply speed bonus
WeightedPV *= SpeedBonus(ChartInfo.SpeedValue);
// Multiply by PV constant
WeightedPV *= PVConstant;
// Return
return(WeightedPV);
}
public void Update(TimeSpan CurrentOffset, ChotaikoChartInfo ChartInfo)
{
// If too late, set as hit and accuracy to 0
if (!HitOffset.HasValue && CurrentOffset > this.Offset + ChartInfo.HitRange)
{
this.HitOffset = CurrentOffset;
this.Accuracy = 0;
}
}
public void Draw(TimeSpan CurrentOffset, ChotaikoChartInfo ChartInfo)
{
/*// Error
* double Error = -(CurrentOffset - this.Offset).TotalMilliseconds;
*
* // Error percentage
* double ErrorPercent = 30 * Error / ChartInfo.ScreenInterval.TotalMilliseconds;
*
* if (ErrorPercent < 30 && ErrorPercent > 0)
* {
* for (int i = 0; i < ErrorPercent; i++) Console.Write("|");
* Console.WriteLine();
* }*/
Console.WriteLine("Beat with angle " + this.Theta + " ID " + this.NoteID);
}
public bool OnPress(TimeSpan CurrentOffset, ChotaikoChartInfo ChartInfo)
{
// Already hit
if (this.HitOffset.HasValue)
{
return(false);
}
// Too late
if (CurrentOffset > this.Offset + ChartInfo.HitRange)
{
this.HitOffset = this.Offset + ChartInfo.HitRange;
return(false);
}
// Too early
else if (CurrentOffset < this.Offset - ChartInfo.HitRange)
{
// Hit now
this.HitOffset = CurrentOffset;
// Miss
this.Accuracy = 0;
}
// Within range
else
{
// Hit now
this.HitOffset = CurrentOffset;
// Hit error
double Error = Math.Abs((CurrentOffset - this.Offset).TotalMilliseconds);
// Error percentage
double ErrorPercent = Error / ChartInfo.HitRange.TotalMilliseconds;
// Accuracy = Hit error * 100
this.Accuracy = 100 - Convert.ToInt32(100 * ErrorPercent);
}
Console.WriteLine(this.Accuracy);
return(true);
}
/// <summary>
/// Calculates performance value (PV) based on the accuracies of each note
/// </summary>
/// <returns>Performance value</returns>
public double CalculatePerformanceValue(ChotaikoChartInfo ChartInfo)
{
// Unweighted performance value
double UnweightedPV = 0;
// Strain value of last object
double Strain = 0;
// Length of chart is difference between first and last objects
TimeSpan ChartLength = PlayObjects[PlayObjects.Count - 1].GetOffset() - PlayObjects[0].GetOffset();
for (int i = 0; i < PlayObjects.Count - 1; i++)
{
IChotaikoPlayObject FirstObject = PlayObjects[i];
IChotaikoPlayObject SecondObject = PlayObjects[i + 1];
// Add accuracy to strain
Strain += ((double)(FirstObject.GetAccuracy()) / 100);
// Time difference between objects
TimeSpan TimeDifference = SecondObject.GetOffset() - FirstObject.GetOffset();
// Inverse of strain to decay
double InverseStrain = InversePVDecay(Strain);
// Strain at clicking of second object
double AfterStrain = PVDecay(InverseStrain + TimeDifference.TotalMilliseconds);
// Strain is now start of next object
Strain = AfterStrain;
// Accumulated PV over this interval = Integral of strain
double AccumulatedPV = IntegratePVDecay(InverseStrain, InverseStrain + TimeDifference.TotalMilliseconds);
// Add accumulated PV to total unweighted PV
UnweightedPV += AccumulatedPV;
}
double WeightedPV = WeightPV(UnweightedPV, ChartLength, ChartInfo);
return(WeightedPV);
}
