diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModAimAssist.cs b/osu.Game.Rulesets.Osu/Mods/OsuModAimAssist.cs new file mode 100644 index 0000000000..325c5d0c13 --- /dev/null +++ b/osu.Game.Rulesets.Osu/Mods/OsuModAimAssist.cs @@ -0,0 +1,97 @@ +// 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.Collections.Generic; +using osu.Framework.Graphics; +using osu.Framework.Graphics.Sprites; +using osu.Game.Rulesets.Mods; +using osu.Game.Rulesets.Objects.Drawables; +using osu.Game.Rulesets.Objects.Types; +using osu.Game.Rulesets.Osu.Objects.Drawables; +using osu.Game.Rulesets.UI; + +namespace osu.Game.Rulesets.Osu.Mods +{ + internal class OsuModAimAssist : Mod, IApplicableToDrawableHitObjects, IUpdatableByPlayfield + { + public override string Name => "AimAssist"; + public override string Acronym => "AA"; + public override IconUsage Icon => FontAwesome.Solid.MousePointer; + public override ModType Type => ModType.Fun; + public override string Description => "No need to chase the circle, the circle chases you"; + public override double ScoreMultiplier => 1; + public override Type[] IncompatibleMods => new[] { typeof(OsuModAutopilot), typeof(OsuModAutoplay), typeof(OsuModWiggle), typeof(OsuModTransform) }; + + private HashSet movingObjects = new HashSet(); + private int updateCounter = 0; + + public void Update(Playfield playfield) + { + // Avoid crowded judgment displays + playfield.DisplayJudgements.Value = false; + + // Object destination updated when cursor updates + playfield.Cursor.ActiveCursor.OnUpdate += drawableCursor => + { + // ... every 500th cursor update iteration + // (lower -> potential lags ; higher -> easier to miss if cursor too fast) + if (updateCounter++ < 500) return; + updateCounter = 0; + + // First move objects to new destination, then remove them from movingObjects set if they're too old + movingObjects.RemoveWhere(d => + { + var currentTime = playfield.Clock.CurrentTime; + var h = d.HitObject; + d.ClearTransforms(); + switch (d) + { + case DrawableHitCircle circle: + d.MoveTo(drawableCursor.DrawPosition, Math.Max(0, h.StartTime - currentTime)); + return currentTime > h.StartTime; + case DrawableSlider slider: + + // Move slider to cursor + if (currentTime < h.StartTime) + d.MoveTo(drawableCursor.DrawPosition, Math.Max(0, h.StartTime - currentTime)); + + // Move slider so that sliderball stays on the cursor + else + d.MoveTo(drawableCursor.DrawPosition - slider.Ball.DrawPosition, Math.Max(0, h.StartTime - currentTime)); + return currentTime > (h as IHasEndTime).EndTime - 50; + case DrawableSpinner spinner: + // TODO + return true; + } + return true; // never happens(?) + }); + }; + } + + public void ApplyToDrawableHitObjects(IEnumerable drawables) + { + foreach (var drawable in drawables) + drawable.ApplyCustomUpdateState += drawableOnApplyCustomUpdateState; + } + + private void drawableOnApplyCustomUpdateState(DrawableHitObject drawable, ArmedState state) + { + if (!(drawable is DrawableOsuHitObject d)) + return; + var h = d.HitObject; + using (d.BeginAbsoluteSequence(h.StartTime - h.TimePreempt)) + movingObjects.Add(d); + } + } + + /* + * TODOs + * - remove object timing glitches / artifacts + * - remove FollowPoints + * - automate sliders + * - combine with OsuModRelax (?) + * - must be some way to make this more effictient + * + */ +} diff --git a/osu.Game.Rulesets.Osu/OsuRuleset.cs b/osu.Game.Rulesets.Osu/OsuRuleset.cs index d50d4f401c..9dbc144501 100644 --- a/osu.Game.Rulesets.Osu/OsuRuleset.cs +++ b/osu.Game.Rulesets.Osu/OsuRuleset.cs @@ -136,6 +136,7 @@ namespace osu.Game.Rulesets.Osu new OsuModSpinIn(), new MultiMod(new OsuModGrow(), new OsuModDeflate()), new MultiMod(new ModWindUp(), new ModWindDown()), + new OsuModAimAssist(), }; case ModType.System: