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osu-lazer/osu.Game.Rulesets.Mania/Difficulty/ManiaLegacyScoreSimulator.cs
2024-03-28 22:58:39 +09:00

66 lines
2.1 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System.Collections.Generic;
using System.Linq;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Mania.Beatmaps;
using osu.Game.Rulesets.Mania.Mods;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Scoring.Legacy;
namespace osu.Game.Rulesets.Mania.Difficulty
{
internal class ManiaLegacyScoreSimulator : ILegacyScoreSimulator
{
public LegacyScoreAttributes Simulate(IWorkingBeatmap workingBeatmap, IBeatmap playableBeatmap)
{
return new LegacyScoreAttributes
{
ComboScore = 1000000,
MaxCombo = 0 // Max combo is mod-dependent, so any value here is insufficient.
};
}
public double GetLegacyScoreMultiplier(IReadOnlyList<Mod> mods, LegacyBeatmapConversionDifficultyInfo difficulty)
{
bool scoreV2 = mods.Any(m => m is ModScoreV2);
double multiplier = 1.0;
foreach (var mod in mods)
{
switch (mod)
{
case ManiaModNoFail:
multiplier *= scoreV2 ? 1.0 : 0.5;
break;
case ManiaModEasy:
multiplier *= 0.5;
break;
case ManiaModHalfTime:
case ManiaModDaycore:
multiplier *= 0.5;
break;
}
}
if (new ManiaRuleset().RulesetInfo.Equals(difficulty.SourceRuleset))
return multiplier;
// Apply key mod multipliers.
int originalColumns = ManiaBeatmapConverter.GetColumnCount(difficulty);
int actualColumns = ManiaBeatmapConverter.GetColumnCount(difficulty, mods);
if (actualColumns > originalColumns)
multiplier *= 0.9;
else if (actualColumns < originalColumns)
multiplier *= 0.9 - 0.04 * (originalColumns - actualColumns);
return multiplier;
}
}
}