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Scale rate adjustments based on hit timing consistency and tweak some related numbers

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This commit is contained in:
Henry Lin 2022-03-05 21:48:57 +08:00
parent 76d257fbe4
commit 8b8b54b58f
1 changed files with 24 additions and 5 deletions
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29
osu.Game/Rulesets/Mods/ModAdaptiveSpeed.cs
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@ -70,8 +70,8 @@ namespace osu.Game.Rulesets.Mods
// The two constants below denote the maximum allowable change in rate caused by a single hit
// This prevents sudden jolts caused by a badly-timed hit.
private const double min_allowable_rate_change = 0.8d;
private const double max_allowable_rate_change = 1.25d;
private const double min_allowable_rate_change = 0.9d;
private const double max_allowable_rate_change = 1.11d;
// Apply a fixed rate change when missing, allowing the player to catch up when the rate is too fast.
private const double rate_change_on_miss = 0.95d;
@ -83,7 +83,7 @@ namespace osu.Game.Rulesets.Mods
/// The number of most recent track rates (approximated from how early/late each object was hit relative to the previous object)
/// which should be averaged to calculate <see cref="targetRate"/>.
/// </summary>
private const int recent_rate_count = 6;
private const int recent_rate_count = 8;
/// <summary>
/// Stores the most recent <see cref="recent_rate_count"/> approximated track rates
@ -172,7 +172,7 @@ namespace osu.Game.Rulesets.Mods
recentRates.Add(Math.Clamp(getRelativeRateChange(result) * SpeedChange.Value, min_allowable_rate, max_allowable_rate));
targetRate = recentRates.Average();
updateTargetRate();
};
drawable.OnRevertResult += (o, result) =>
{
@ -184,7 +184,7 @@ namespace osu.Game.Rulesets.Mods
recentRates.RemoveAt(recentRates.Count - 1);
targetRate = recentRates.Average();
updateTargetRate();
};
}
@ -246,5 +246,24 @@ namespace osu.Game.Rulesets.Mods
max_allowable_rate_change
);
}
/// <summary>
/// Update <see cref="targetRate"/> based on the values in <see cref="recentRates"/>.
/// </summary>
private void updateTargetRate()
{
// Compare values in recentRates to see how consistent the player's speed is
// If the player hits half of the notes too fast and the other half too slow: Abs(consistency) = 0
// If the player hits all their notes too fast or too slow: Abs(consistency) = recent_rate_count - 1
int consistency = 0;
for (int i = 1; i < recentRates.Count; i++)
{
consistency += Math.Sign(recentRates[i] - recentRates[i - 1]);
}
// Scale the rate adjustment based on consistency
targetRate = Interpolation.Lerp(targetRate, recentRates.Average(), Math.Abs(consistency) / (recent_rate_count - 1d));
}
}
}