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osu-lazer/osu.Game.Rulesets.Mania/Judgements/HitWindows.cs

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// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using osu.Game.Beatmaps;
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using osu.Game.Rulesets.Objects.Drawables;
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namespace osu.Game.Rulesets.Mania.Judgements
{
public class HitWindows
{
#region Constants
/// <summary>
/// PERFECT hit window at OD = 10.
/// </summary>
private const double perfect_min = 27.8;
/// <summary>
/// PERFECT hit window at OD = 5.
/// </summary>
private const double perfect_mid = 38.8;
/// <summary>
/// PERFECT hit window at OD = 0.
/// </summary>
private const double perfect_max = 44.8;
/// <summary>
/// GREAT hit window at OD = 10.
/// </summary>
private const double great_min = 68;
/// <summary>
/// GREAT hit window at OD = 5.
/// </summary>
private const double great_mid = 98;
/// <summary>
/// GREAT hit window at OD = 0.
/// </summary>
private const double great_max = 128;
/// <summary>
/// GOOD hit window at OD = 10.
/// </summary>
private const double good_min = 134;
/// <summary>
/// GOOD hit window at OD = 5.
/// </summary>
private const double good_mid = 164;
/// <summary>
/// GOOD hit window at OD = 0.
/// </summary>
private const double good_max = 194;
/// <summary>
/// OK hit window at OD = 10.
/// </summary>
private const double ok_min = 194;
/// <summary>
/// OK hit window at OD = 5.
/// </summary>
private const double ok_mid = 224;
/// <summary>
/// OK hit window at OD = 0.
/// </summary>
private const double ok_max = 254;
/// <summary>
/// BAD hit window at OD = 10.
/// </summary>
private const double bad_min = 242;
/// <summary>
/// BAD hit window at OD = 5.
/// </summary>
private const double bad_mid = 272;
/// <summary>
/// BAD hit window at OD = 0.
/// </summary>
private const double bad_max = 302;
/// <summary>
/// MISS hit window at OD = 10.
/// </summary>
private const double miss_min = 316;
/// <summary>
/// MISS hit window at OD = 5.
/// </summary>
private const double miss_mid = 346;
/// <summary>
/// MISS hit window at OD = 0.
/// </summary>
private const double miss_max = 376;
#endregion
/// <summary>
/// Hit window for a PERFECT hit.
/// </summary>
public double Perfect = perfect_mid;
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/// <summary>
/// Hit window for a GREAT hit.
/// </summary>
public double Great = great_mid;
/// <summary>
/// Hit window for a GOOD hit.
/// </summary>
public double Good = good_mid;
/// <summary>
/// Hit window for an OK hit.
/// </summary>
public double Ok = ok_mid;
/// <summary>
/// Hit window for a BAD hit.
/// </summary>
public double Bad = bad_mid;
/// <summary>
/// Hit window for a MISS hit.
/// </summary>
public double Miss = miss_mid;
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/// <summary>
/// Constructs default hit windows.
/// </summary>
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public HitWindows()
{
}
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/// <summary>
/// Constructs hit windows by fitting a parameter to a 2-part piecewise linear function for each hit window.
/// </summary>
/// <param name="difficulty">The parameter.</param>
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public HitWindows(double difficulty)
{
Perfect = BeatmapDifficulty.DifficultyRange(difficulty, perfect_max, perfect_mid, perfect_min);
Great = BeatmapDifficulty.DifficultyRange(difficulty, great_max, great_mid, great_min);
Good = BeatmapDifficulty.DifficultyRange(difficulty, good_max, good_mid, good_min);
Ok = BeatmapDifficulty.DifficultyRange(difficulty, ok_max, ok_mid, ok_min);
Bad = BeatmapDifficulty.DifficultyRange(difficulty, bad_max, bad_mid, bad_min);
Miss = BeatmapDifficulty.DifficultyRange(difficulty, miss_max, miss_mid, miss_min);
}
/// <summary>
/// Retrieves the hit result for a time offset.
/// </summary>
/// <param name="hitOffset">The time offset.</param>
/// <returns>The hit result, or null if the time offset results in a miss.</returns>
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public HitResult? ResultFor(double hitOffset)
{
if (hitOffset <= Perfect / 2)
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return HitResult.Perfect;
if (hitOffset <= Great / 2)
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return HitResult.Great;
if (hitOffset <= Good / 2)
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return HitResult.Good;
if (hitOffset <= Ok / 2)
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return HitResult.Ok;
if (hitOffset <= Bad / 2)
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return HitResult.Meh;
return null;
}
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/// <summary>
/// Constructs new hit windows which have been multiplied by a value.
/// </summary>
/// <param name="windows">The original hit windows.</param>
/// <param name="value">The value to multiply each hit window by.</param>
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public static HitWindows operator *(HitWindows windows, double value)
{
return new HitWindows
{
Perfect = windows.Perfect * value,
Great = windows.Great * value,
Good = windows.Good * value,
Ok = windows.Ok * value,
Bad = windows.Bad * value,
Miss = windows.Miss * value
};
}
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/// <summary>
/// Constructs new hit windows which have been divided by a value.
/// </summary>
/// <param name="windows">The original hit windows.</param>
/// <param name="value">The value to divide each hit window by.</param>
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public static HitWindows operator /(HitWindows windows, double value)
{
return new HitWindows
{
Perfect = windows.Perfect / value,
Great = windows.Great / value,
Good = windows.Good / value,
Ok = windows.Ok / value,
Bad = windows.Bad / value,
Miss = windows.Miss / value
};
}
}
}