public static void GetSongDifficulty(AttributesHeader2014 attribute, Song2014 song)
{
var easyArray = new List <int>();
var mediumArray = new List <int>();
var hardArray = new List <int>();
for (int i = 0; i < song.PhraseIterations.Length; i++)
{
var pt = song.PhraseIterations[i];
var hard = song.Phrases[pt.PhraseId].MaxDifficulty;
if (pt.HeroLevels != null)
{
foreach (var h in pt.HeroLevels)
{
switch (h.Hero)
{
case 1:
easyArray.Add(h.Difficulty);
break;
case 2:
mediumArray.Add(h.Difficulty);
break;
case 3:
hard = h.Difficulty;
break;
}
hardArray.Add(hard);
}
}
}
// Is not the way of official are calculated, but is a way to calculate unique values for custom
// Could be rewritten with the correct way or a best way to get this value
var itCount = song.PhraseIterations.Length;
var ifAny = easyArray.Count > 0;
// TODO: round to 9 decimal places and improve calculation
attribute.SongDiffEasy = ifAny ? easyArray.Average() / itCount : 0;
attribute.SongDiffMed = ifAny ? mediumArray.Average() / itCount : 0;
attribute.SongDiffHard = ifAny ? hardArray.Average() / itCount : 0;
attribute.SongDifficulty = attribute.SongDiffHard;
}
public static void GetSongDifficulty(AttributesHeader2014 attribute, Song2014 song)
{
// This is not the way official values are calculated, but sometimes gets pretty close
// TODO: improve calculation
var arrProrp = song.ArrangementProperties;
int techCoeff = arrProrp.NonStandardChords +
3 * arrProrp.BarreChords +
(arrProrp.PowerChords | arrProrp.DoubleStops) +
arrProrp.DropDPower +
2 * arrProrp.OpenChords +
arrProrp.FingerPicking +
arrProrp.TwoFingerPicking +
arrProrp.PalmMutes +
2 * arrProrp.Harmonics +
3 * arrProrp.PinchHarmonics +
arrProrp.Hopo +
arrProrp.Tremolo +
(arrProrp.PathBass == 1 ? 4 : 1) * arrProrp.Slides +
arrProrp.UnpitchedSlides +
3 * arrProrp.Bends +
4 * arrProrp.Tapping +
2 * arrProrp.Vibrato +
arrProrp.FretHandMutes +
arrProrp.SlapPop +
arrProrp.Sustain +
arrProrp.FifthsAndOctaves +
arrProrp.Syncopation;
// Arrangements with few/no techniques get very low values otherwise
if (techCoeff <= 5)
{
techCoeff += 4;
}
// In official content maximum value for SongDiffHard is 1.0
attribute.SongDiffHard = Math.Round(techCoeff * (double)attribute.NotesHard / song.SongLength / 100, 9);
attribute.SongDiffMed = Math.Round(techCoeff * (double)attribute.NotesMedium / song.SongLength / 50, 9);
attribute.SongDiffEasy = Math.Round(techCoeff * (double)attribute.NotesEasy / song.SongLength / 25, 9);
attribute.SongDifficulty = attribute.SongDiffHard;
}
