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Fix multimod difficulty combinations not generating correctly

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This commit is contained in:
smoogipoo
2020-10-14 19:03:11 +09:00
parent 205c6606a7
commit d7a52e97ff
2 changed files with 66 additions and 4 deletions
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31
osu.Game/Rulesets/Difficulty/DifficultyCalculator.cs
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@ -107,7 +107,7 @@ namespace osu.Game.Rulesets.Difficulty
{
return createDifficultyAdjustmentModCombinations(Array.Empty<Mod>(), DifficultyAdjustmentMods).ToArray();
IEnumerable<Mod> createDifficultyAdjustmentModCombinations(IEnumerable<Mod> currentSet, Mod[] adjustmentSet, int currentSetCount = 0, int adjustmentSetStart = 0)
static IEnumerable<Mod> createDifficultyAdjustmentModCombinations(IEnumerable<Mod> currentSet, Mod[] adjustmentSet, int currentSetCount = 0, int adjustmentSetStart = 0)
{
switch (currentSetCount)
{
@ -133,13 +133,36 @@ namespace osu.Game.Rulesets.Difficulty
for (int i = adjustmentSetStart; i < adjustmentSet.Length; i++)
{
var adjustmentMod = adjustmentSet[i];
if (currentSet.Any(c => c.IncompatibleMods.Any(m => m.IsInstanceOfType(adjustmentMod))))
continue;
foreach (var combo in createDifficultyAdjustmentModCombinations(currentSet.Append(adjustmentMod), adjustmentSet, currentSetCount + 1, i + 1))
if (currentSet.Any(c => c.IncompatibleMods.Any(m => m.IsInstanceOfType(adjustmentMod))
|| adjustmentMod.IncompatibleMods.Any(m => m.IsInstanceOfType(c))))
{
continue;
}
// Append the new mod.
int newSetCount = currentSetCount;
var newSet = append(currentSet, adjustmentMod, ref newSetCount);
foreach (var combo in createDifficultyAdjustmentModCombinations(newSet, adjustmentSet, newSetCount, i + 1))
yield return combo;
}
}
// Appends a mod to an existing enumerable, returning the result. Recurses for MultiMod.
static IEnumerable<Mod> append(IEnumerable<Mod> existing, Mod mod, ref int count)
{
if (mod is MultiMod multi)
{
foreach (var nested in multi.Mods)
existing = append(existing, nested, ref count);
return existing;
}
count++;
return existing.Append(mod);
}
}
/// <summary>