public List <Note> Generate(int beatsPerBar, int barCount, float timeOffset)
{
var barConfiguration = Enumerable.Range(0, beatsPerBar)
.Select(_ => GenerateRandomBeatConfiguration())
.ToList();
var modificationProbability = 0.2;
var modifications = new BeatConfiguration[beatsPerBar];
var notes = new List <Note>();
for (var barIdx = 0; barIdx < barCount; barIdx++)
{
if (StaticRandom.Rng.NextDouble() < modificationProbability)
{
var modificationBeatIdx = StaticRandom.Rng.Next(beatsPerBar);
if (modifications[modificationBeatIdx] != null)
{
modifications[modificationBeatIdx] = null;
}
else
{
modifications[modificationBeatIdx] = GenerateRandomBeatConfiguration();
}
}
for (var beatIdx = 0; beatIdx < beatsPerBar; beatIdx++)
{
var time = timeOffset + barIdx * beatsPerBar + beatIdx;
var beatConfiguration = modifications[beatIdx] ?? barConfiguration[beatIdx];
var combination = GetCombination(time, beatConfiguration);
notes.AddRange(combination);
}
}
return(notes);
}
private IEnumerable <Note> GetCombination(float time, BeatConfiguration beatConfiguration)
{
var combinationIndex = beatConfiguration.CombinationIdx;
var hand = beatConfiguration.Hand;
var horizontalPosition = beatConfiguration.HorizontalPosition;
var verticalPosition = beatConfiguration.VerticalPosition;
switch (combinationIndex)
{
case 0:
return(NoteCombinationLibrary.DownUp(time, hand, horizontalPosition, verticalPosition));
case 1:
return(NoteCombinationLibrary.BlueRedStacked(time, horizontalPosition, verticalPosition));
case 2:
return(NoteCombinationLibrary.RedBlueStacked(time, horizontalPosition, verticalPosition));
case 3:
return(NoteCombinationLibrary.CrossDoubleDownDiagonal(time, verticalPosition));
case 4:
return(NoteCombinationLibrary.DiagonalDownDouble(time, verticalPosition));
case 5:
return(NoteCombinationLibrary.DoubleDownUp(time, horizontalPosition, verticalPosition));
case 6:
return(NoteCombinationLibrary.LeftRight(time, horizontalPosition, verticalPosition));
case 7:
return(NoteCombinationLibrary.RightLeft(time, horizontalPosition, verticalPosition));
case 8:
return(NoteCombinationLibrary.Double(time, CutDirection.Down, horizontalPosition, verticalPosition));
case 9:
return(NoteCombinationLibrary.ReversedDouble(time, CutDirection.Down, horizontalPosition, verticalPosition));
case 10:
return(new[] { new Note(time, hand, CutDirection.Down, horizontalPosition, verticalPosition) });
case 11:
var cutDirection = StaticRandom.Rng.Next(2) == 1 ? CutDirection.Down : CutDirection.Up;
return(NoteCombinationLibrary.OppositeDownUp(time, cutDirection, horizontalPosition, verticalPosition));
case 12:
return(NoteCombinationLibrary.CrossDoubleHorizontalBlueRed(time, verticalPosition));
case 13:
return(NoteCombinationLibrary.CrossDoubleHorizontalRedBlue(time, verticalPosition));
default:
throw new ArgumentOutOfRangeException(nameof(combinationIndex));
}
}
