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Code Issues Releases Wiki Activity

Reduce repetition nerf for non-consecutive islands

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This commit is contained in:
StanR 2024-08-27 23:48:15 +05:00
parent ed45c947fc
commit 7fda8bc95b
1 changed files with 22 additions and 15 deletions
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35
osu.Game.Rulesets.Osu/Difficulty/Evaluators/RhythmEvaluator.cs
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@ -14,19 +14,24 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
{
private readonly struct Island : IEquatable<Island>
{
public Island()
private readonly double deltaDifferenceEpsilon;
public Island(double epsilon)
{
deltaDifferenceEpsilon = epsilon;
}
public Island(int firstDelta, double epsilon)
{
AddDelta(firstDelta, epsilon);
deltaDifferenceEpsilon = epsilon;
AddDelta(firstDelta);
}
public List<int> Deltas { get; } = new List<int>();
public void AddDelta(int delta, double epsilon)
public void AddDelta(int delta)
{
double epsilon = deltaDifferenceEpsilon;
int existingDelta = Deltas.FirstOrDefault(x => Math.Abs(x - delta) >= epsilon);
Deltas.Add(existingDelta == default ? delta : existingDelta);
@ -34,10 +39,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
public double AverageDelta() => Deltas.Count > 0 ? Math.Max(Deltas.Average(), OsuDifficultyHitObject.MIN_DELTA_TIME) : 0;
public bool IsSimilarPolarity(Island other, double epsilon)
public bool IsSimilarPolarity(Island other)
{
// consider islands to be of similar polarity only if they're having the same average delta (we don't want to consider 3 singletaps similar to a triple)
return Math.Abs(AverageDelta() - other.AverageDelta()) < epsilon &&
return Math.Abs(AverageDelta() - other.AverageDelta()) < deltaDifferenceEpsilon &&
Deltas.Count % 2 == other.Deltas.Count % 2;
}
@ -61,7 +66,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
private const int history_time_max = 5 * 1000; // 5 seconds of calculatingRhythmBonus max.
private const int history_objects_max = 32;
private const double rhythm_multiplier = 1.25;
private const double rhythm_multiplier = 1.2;
/// <summary>
/// Calculates a rhythm multiplier for the difficulty of the tap associated with historic data of the current <see cref="OsuDifficultyHitObject"/>.
@ -73,8 +78,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
double rhythmComplexitySum = 0;
var island = new Island();
var previousIsland = new Island();
double deltaDifferenceEpsilon = ((OsuDifficultyHitObject)current).HitWindowGreat * 0.3;
var island = new Island(deltaDifferenceEpsilon);
var previousIsland = new Island(deltaDifferenceEpsilon);
Dictionary<Island, int> islandCounts = new Dictionary<Island, int>();
int historyTimeMaxAdjusted = (int)Math.Ceiling(history_time_max / clockRate);
@ -106,9 +113,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
double prevDelta = prevObj.StrainTime;
double lastDelta = lastObj.StrainTime;
double currRatio = 1.0 + 7.27 * Math.Min(0.5, Math.Pow(Math.Sin(Math.PI / (Math.Min(prevDelta, currDelta) / Math.Max(prevDelta, currDelta))), 2)); // fancy function to calculate rhythmbonuses.
double deltaDifferenceEpsilon = currObj.HitWindowGreat * 0.3;
double currRatio = 1.0 + 5.8 * Math.Min(0.5, Math.Pow(Math.Sin(Math.PI / (Math.Min(prevDelta, currDelta) / Math.Max(prevDelta, currDelta))), 2)); // fancy function to calculate rhythmbonuses.
double windowPenalty = Math.Min(1, Math.Max(0, Math.Abs(prevDelta - currDelta) - deltaDifferenceEpsilon) / deltaDifferenceEpsilon);
@ -119,7 +124,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
if (!(Math.Abs(prevDelta - currDelta) > deltaDifferenceEpsilon))
{
// island is still progressing
island.AddDelta((int)currDelta, deltaDifferenceEpsilon);
island.AddDelta((int)currDelta);
}
else
{
@ -131,10 +136,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
// unintentional side effect is that bursts with kicksliders at the ends might have lower difficulty than bursts without sliders
// therefore we're checking for quick sliders and don't lower the difficulty for them since they don't really make tapping easier (no time to adjust)
if (prevObj.BaseObject is Slider && prevObj.TravelTime > prevDelta * 1.5)
effectiveRatio *= 0.15;
effectiveRatio *= 0.2;
// repeated island polartiy (2 -> 4, 3 -> 5)
if (island.IsSimilarPolarity(previousIsland, deltaDifferenceEpsilon))
if (island.IsSimilarPolarity(previousIsland))
effectiveRatio *= 0.3;
// previous increase happened a note ago, 1/1->1/2-1/4, dont want to buff this.
@ -143,6 +148,8 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
if (!islandCounts.TryAdd(island, 1))
{
// only add island to island counts if they're going one after another
if (previousIsland.Equals(island))
islandCounts[island]++;
// repeated island (ex: triplet -> triplet)