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Code Issues Releases Wiki Activity

Optimize recommender (for custom rulesets)

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This commit is contained in:
Endrik Tombak 2020-04-17 18:15:11 +03:00
parent da9bd74e2e
commit 1ac9ee5990
1 changed files with 20 additions and 12 deletions
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32
osu.Game/Screens/Select/DifficultyRecommender.cs
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@ -51,8 +51,7 @@ namespace osu.Game.Screens.Select
foreach (var r in getBestRulesetOrder())
{
if (!recommendedStarDifficulty.TryGetValue(ruleset.Value, out var stars))
break;
recommendedStarDifficulty.TryGetValue(ruleset.Value, out var stars);
beatmap = beatmaps.Where(b => b.Ruleset.Equals(r)).OrderBy(b =>
{
@ -75,6 +74,7 @@ namespace osu.Game.Screens.Select
req.Success += result =>
{
bestRulesetOrder = null;
// algorithm taken from https://github.com/ppy/osu-web/blob/e6e2825516449e3d0f3f5e1852c6bdd3428c3437/app/Models/User.php#L1505
recommendedStarDifficulty[rulesetInfo] = Math.Pow((double)(result.Statistics.PP ?? 0), 0.4) * 0.195;
};
@ -87,22 +87,30 @@ namespace osu.Game.Screens.Select
private IEnumerable<RulesetInfo> getBestRulesetOrder()
{
if (bestRulesetOrder != null)
return moveCurrentRulesetToFirst();
bestRulesetOrder = recommendedStarDifficulty.ToList()
.OrderBy(pair => pair.Value)
.Select(pair => pair.Key)
.Reverse();
bestRulesetOrder ??= recommendedStarDifficulty.ToList()
.OrderBy(pair => pair.Value)
.Select(pair => pair.Key)
.Reverse();
return moveCurrentRulesetToFirst();
}
private IEnumerable<RulesetInfo> moveCurrentRulesetToFirst()
{
var orderedRulesets = bestRulesetOrder.ToList();
orderedRulesets.Remove(ruleset.Value);
orderedRulesets.Insert(0, ruleset.Value);
List<RulesetInfo> orderedRulesets = null;
if (bestRulesetOrder.Contains(ruleset.Value))
{
orderedRulesets = bestRulesetOrder.ToList();
orderedRulesets.Remove(ruleset.Value);
orderedRulesets.Insert(0, ruleset.Value);
}
else
{
orderedRulesets = new List<RulesetInfo> { ruleset.Value };
orderedRulesets.AddRange(bestRulesetOrder);
}
return orderedRulesets;
}