1
0
mirror of https://github.com/ppy/osu.git synced 2024-11-14 16:37:26 +08:00

speed eval refactoring

This commit is contained in:
Givikap120 2024-08-05 16:50:06 +03:00
parent f41bab0eb8
commit ac57cdd1b3
2 changed files with 15 additions and 5 deletions

View File

@ -10,7 +10,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
{
public static class SpeedEvaluator
{
private const double single_spacing_threshold = 125;
private const double single_spacing_threshold = 125; // 1.25 circles distance between centers
private const double min_speed_bonus = 75; // ~200BPM
private const double speed_balancing_factor = 40;
@ -50,16 +50,26 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Evaluators
// 0.93 is derived from making sure 260bpm OD8 streams aren't nerfed harshly, whilst 0.92 limits the effect of the cap.
strainTime /= Math.Clamp((strainTime / osuCurrObj.HitWindowGreat) / 0.93, 0.92, 1);
// derive speedBonus for calculation
// speedBonus will be 1.0 for BPM < 200
double speedBonus = 1.0;
// Add additional scaling bonus for streams/bursts higher than 200bpm
if (strainTime < min_speed_bonus)
speedBonus = 1 + 0.75 * Math.Pow((min_speed_bonus - strainTime) / speed_balancing_factor, 2);
double travelDistance = osuPrevObj?.TravelDistance ?? 0;
double distance = Math.Min(single_spacing_threshold, travelDistance + osuCurrObj.MinimumJumpDistance);
double distance = travelDistance + osuCurrObj.MinimumJumpDistance;
return (speedBonus + speedBonus * Math.Pow(distance / single_spacing_threshold, 3.5)) * doubletapness / strainTime;
// Cap distance at single_spacing_threshold
distance = Math.Min(distance, single_spacing_threshold);
double distanceBonus = 1 + Math.Pow(distance / single_spacing_threshold, 3.5);
// Base difficulty with all bonuses
double difficulty = speedBonus * distanceBonus * 1000 / strainTime;
// Apply penalty if there's doubletappable doubles
return difficulty * doubletapness;
}
}
}

View File

@ -16,7 +16,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills
/// </summary>
public class Speed : OsuStrainSkill
{
private double skillMultiplier => 1375;
private double skillMultiplier => 1.375;
private double strainDecayBase => 0.3;
private double currentStrain;