// Copyright (c) ppy Pty Ltd . Licensed under the MIT Licence. // See the LICENCE file in the repository root for full licence text. using System; using System.Linq; using System.Threading; using osu.Game.Beatmaps; using osu.Game.Rulesets.Judgements; using osu.Game.Rulesets.Mods; using osu.Game.Rulesets.Objects; using osu.Game.Rulesets.Objects.Drawables; using osu.Game.Rulesets.Objects.Types; using osu.Game.Rulesets.Osu.Beatmaps; using osu.Game.Rulesets.Osu.Judgements; using osu.Game.Rulesets.Osu.Objects; using osu.Game.Rulesets.Osu.Objects.Drawables; using osu.Game.Rulesets.UI; namespace osu.Game.Rulesets.Osu.Mods { public class OsuModStrictTracking : Mod, IApplicableAfterBeatmapConversion, IApplicableToDrawableHitObject, IApplicableToDrawableRuleset { public override string Name => @"Strict Tracking"; public override string Acronym => @"ST"; public override ModType Type => ModType.DifficultyIncrease; public override string Description => @"Once you start a slider, follow precisely or get a miss."; public override double ScoreMultiplier => 1.0; public override Type[] IncompatibleMods => new[] { typeof(ModClassic), typeof(OsuModTarget) }; public void ApplyToDrawableHitObject(DrawableHitObject drawable) { if (drawable is DrawableSlider slider) { slider.Tracking.ValueChanged += e => { if (e.NewValue || slider.Judged) return; var tail = slider.NestedHitObjects.OfType().First(); if (!tail.Judged) tail.MissForcefully(); }; } } public void ApplyToBeatmap(IBeatmap beatmap) { var osuBeatmap = (OsuBeatmap)beatmap; if (osuBeatmap.HitObjects.Count == 0) return; var hitObjects = osuBeatmap.HitObjects.Select(ho => { if (ho is Slider slider) { var newSlider = new StrictTrackingSlider(slider); return newSlider; } return ho; }).ToList(); osuBeatmap.HitObjects = hitObjects; } public void ApplyToDrawableRuleset(DrawableRuleset drawableRuleset) { drawableRuleset.Playfield.RegisterPool(10, 100); } private class StrictTrackingSliderTailCircle : SliderTailCircle { public StrictTrackingSliderTailCircle(Slider slider) : base(slider) { } public override Judgement CreateJudgement() => new OsuJudgement(); } private class StrictTrackingDrawableSliderTail : DrawableSliderTail { public override bool DisplayResult => true; } private class StrictTrackingSlider : Slider { public StrictTrackingSlider(Slider original) { StartTime = original.StartTime; Samples = original.Samples; Path = original.Path; NodeSamples = original.NodeSamples; RepeatCount = original.RepeatCount; Position = original.Position; NewCombo = original.NewCombo; ComboOffset = original.ComboOffset; LegacyLastTickOffset = original.LegacyLastTickOffset; TickDistanceMultiplier = original.TickDistanceMultiplier; } protected override void CreateNestedHitObjects(CancellationToken cancellationToken) { var sliderEvents = SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken); foreach (var e in sliderEvents) { switch (e.Type) { case SliderEventType.Tick: AddNested(new SliderTick { SpanIndex = e.SpanIndex, SpanStartTime = e.SpanStartTime, StartTime = e.Time, Position = Position + Path.PositionAt(e.PathProgress), StackHeight = StackHeight, Scale = Scale, }); break; case SliderEventType.Head: AddNested(HeadCircle = new SliderHeadCircle { StartTime = e.Time, Position = Position, StackHeight = StackHeight, }); break; case SliderEventType.LegacyLastTick: AddNested(TailCircle = new StrictTrackingSliderTailCircle(this) { RepeatIndex = e.SpanIndex, StartTime = e.Time, Position = EndPosition, StackHeight = StackHeight }); break; case SliderEventType.Repeat: AddNested(new SliderRepeat(this) { RepeatIndex = e.SpanIndex, StartTime = StartTime + (e.SpanIndex + 1) * SpanDuration, Position = Position + Path.PositionAt(e.PathProgress), StackHeight = StackHeight, Scale = Scale, }); break; } } UpdateNestedSamples(); } } } }