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mirror of https://github.com/ppy/osu.git synced 2024-12-14 14:32:55 +08:00

Implemented osu target mod

This commit is contained in:
Henry Lin 2021-05-19 22:25:56 +08:00
parent 6b90e602cc
commit fe099be443

View File

@ -1,13 +1,34 @@
// 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;
using System.Collections.Generic;
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Audio.Track;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Utils;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Graphics;
using osu.Game.Graphics.Containers;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Objects.Drawables;
using osu.Game.Rulesets.Osu.Beatmaps;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Rulesets.Osu.Objects.Drawables;
using osu.Game.Rulesets.Osu.UI;
using osu.Game.Rulesets.Scoring;
using osu.Game.Rulesets.UI;
using osu.Game.Skinning;
using osuTK;
namespace osu.Game.Rulesets.Osu.Mods
{
public class OsuModTarget : Mod
public class OsuModTarget : ModWithVisibilityAdjustment, IApplicableToDrawableRuleset<OsuHitObject>,
IApplicableToHealthProcessor, IApplicableToDifficulty
{
public override string Name => "Target";
public override string Acronym => "TP";
@ -15,5 +36,349 @@ namespace osu.Game.Rulesets.Osu.Mods
public override IconUsage? Icon => OsuIcon.ModTarget;
public override string Description => @"Practice keeping up with the beat of the song.";
public override double ScoreMultiplier => 1;
public void ApplyToHealthProcessor(HealthProcessor healthProcessor)
{
// Sudden death
healthProcessor.FailConditions += (_, result)
=> result.Type.AffectsCombo()
&& !result.IsHit;
}
// Maximum distance to jump
public const float MAX_DISTANCE = 250f;
public override void ApplyToBeatmap(IBeatmap beatmap)
{
base.ApplyToBeatmap(beatmap);
var osuBeatmap = (OsuBeatmap)beatmap;
var origHitObjects = osuBeatmap.HitObjects.OrderBy(x => x.StartTime).ToList();
var hitObjects = new List<OsuHitObject>();
// Only place circles between startTime and endTime
var startTime = origHitObjects.First().StartTime;
double endTime;
var endObj = origHitObjects.Last();
switch (endObj)
{
case Slider slider:
endTime = slider.EndTime;
break;
case Spinner spinner:
endTime = spinner.EndTime;
break;
default:
endTime = endObj.StartTime;
break;
}
var comboStarts = origHitObjects.Where(x => x.NewCombo).Select(x => x.StartTime).ToList();
TimingControlPoint currentTimingPoint = osuBeatmap.ControlPointInfo.TimingPointAt(startTime);
var currentTime = currentTimingPoint.Time;
int currentCombo = -1;
IList<HitSampleInfo> lastSamples = null;
float direction = MathHelper.TwoPi * RNG.NextSingle();
float distance = 40f;
while (!Precision.AlmostBigger(currentTime, endTime))
{
// Place a circle
// Don't place any circles before the start of the first hit object of the map
// Don't place any circles from the start of break time to the start of the first hit object after the break
if (!Precision.AlmostBigger(startTime, currentTime)
&& !osuBeatmap.Breaks.Any(x => Precision.AlmostBigger(currentTime, x.StartTime)
&& Precision.AlmostBigger(origHitObjects.First(y => Precision.AlmostBigger(y.StartTime, x.EndTime)).StartTime, currentTime)))
{
var newCircle = new HitCircle();
newCircle.ApplyDefaults(osuBeatmap.ControlPointInfo, osuBeatmap.BeatmapInfo.BaseDifficulty);
newCircle.StartTime = currentTime;
// Determine circle position
if (hitObjects.Count == 0)
{
newCircle.Position = new Vector2(RNG.NextSingle(OsuPlayfield.BASE_SIZE.X), RNG.NextSingle(OsuPlayfield.BASE_SIZE.Y));
}
else
{
var relativePos = new Vector2(
distance * (float)Math.Cos(direction),
distance * (float)Math.Sin(direction)
);
relativePos = getRotatedVector(hitObjects.Last().Position, relativePos);
direction = (float)Math.Atan2(relativePos.Y, relativePos.X);
var newPosition = Vector2.Add(hitObjects.Last().Position, relativePos);
if (newPosition.Y < 0)
newPosition.Y = 0;
else if (newPosition.Y > OsuPlayfield.BASE_SIZE.Y)
newPosition.Y = OsuPlayfield.BASE_SIZE.Y;
if (newPosition.X < 0)
newPosition.X = 0;
else if (newPosition.X > OsuPlayfield.BASE_SIZE.X)
newPosition.X = OsuPlayfield.BASE_SIZE.X;
newCircle.Position = newPosition;
// Add a random nudge to the direction
direction += distance / MAX_DISTANCE * (RNG.NextSingle() * MathHelper.TwoPi - MathHelper.Pi);
}
// Determine samples to use
var samples = getSamplesAtTime(origHitObjects, currentTime);
if (samples == null)
{
if (lastSamples != null)
newCircle.Samples = lastSamples;
}
else
{
newCircle.Samples = samples;
lastSamples = samples;
}
// Determine combo
if (comboStarts.Count > currentCombo + 1 && !Precision.AlmostBigger(comboStarts[currentCombo + 1], currentTime))
{
currentCombo++;
newCircle.NewCombo = true;
newCircle.IndexInCurrentCombo = 0;
if (hitObjects.Count > 0)
hitObjects.Last().LastInCombo = true;
// Increase distance for every combo
distance = Math.Min(distance * 1.05f, MAX_DISTANCE);
// Randomize direction as well
direction = MathHelper.TwoPi * RNG.NextSingle();
}
else
{
if (hitObjects.Count > 0)
newCircle.IndexInCurrentCombo = hitObjects.Last().IndexInCurrentCombo + 1;
}
newCircle.ComboIndex = currentCombo;
// Remove the last circle if it is too close in time to this one
if (hitObjects.Count > 0
&& Precision.AlmostBigger(currentTimingPoint.BeatLength / 2, newCircle.StartTime - hitObjects.Last().StartTime))
{
hitObjects.RemoveAt(hitObjects.Count - 1);
}
hitObjects.Add(newCircle);
}
// Advance to the next beat and check for timing point changes
currentTime += currentTimingPoint.BeatLength;
var newTimingPoint = osuBeatmap.ControlPointInfo.TimingPointAt(currentTime);
if (newTimingPoint != currentTimingPoint)
{
currentTimingPoint = newTimingPoint;
currentTime = currentTimingPoint.Time;
}
}
osuBeatmap.HitObjects = hitObjects;
}
/// <summary>
/// Get samples (if any) for a specific point in time.
/// </summary>
/// <remarks>
/// Samples will be returned if a hit circle or a slider node exists at that point of time.
/// </remarks>
/// <param name="hitObjects">The list of hit objects in a beatmap, ordered by StartTime</param>
/// <param name="time">The point in time to get samples for</param>
/// <returns>Hit samples</returns>
private IList<HitSampleInfo> getSamplesAtTime(List<OsuHitObject> hitObjects, double time)
{
var sampleObj = hitObjects.FirstOrDefault(x =>
{
if (Precision.AlmostEquals(time, x.StartTime)) return true;
if (x is Slider slider
&& Precision.AlmostBigger(time, slider.StartTime)
&& Precision.AlmostBigger(slider.EndTime, time))
{
if (Precision.AlmostEquals((time - slider.StartTime) % slider.SpanDuration, 0))
{
return true;
}
}
return false;
});
if (sampleObj == null) return null;
IList<HitSampleInfo> samples = null;
if (sampleObj is Slider slider)
{
samples = slider.NodeSamples[(int)Math.Round((time - slider.StartTime) % slider.SpanDuration)];
}
else
{
samples = sampleObj.Samples;
}
return samples;
}
protected override void ApplyIncreasedVisibilityState(DrawableHitObject hitObject, ArmedState state)
{
}
protected override void ApplyNormalVisibilityState(DrawableHitObject drawable, ArmedState state)
{
if (drawable is DrawableSpinner)
return;
var h = (OsuHitObject)drawable.HitObject;
// apply grow and fade effect
if (drawable is DrawableHitCircle circle)
{
using (drawable.BeginAbsoluteSequence(h.StartTime - h.TimePreempt))
{
drawable.ScaleTo(0.4f)
.Then().ScaleTo(1.6f, h.TimePreempt * 2);
drawable.FadeTo(0.5f)
.Then().Delay(h.TimeFadeIn).FadeTo(1f);
// remove approach circles
circle.ApproachCircle.Hide();
}
}
}
public void ReadFromDifficulty(BeatmapDifficulty difficulty)
{
}
public void ApplyToDifficulty(BeatmapDifficulty difficulty)
{
// Decrease AR to increase preempt time
difficulty.ApproachRate *= 0.5f;
}
// The distances from the hit objects to the borders of the playfield they start to "turn around" and curve towards the middle.
// The closer the hit objects draw to the border, the sharper the turn
private const byte border_distance_x = 192;
private const byte border_distance_y = 144;
/// <summary>
/// Determines the position of the current hit object relative to the previous one.
/// </summary>
/// <returns>The position of the current hit object relative to the previous one</returns>
private Vector2 getRotatedVector(Vector2 prevPosChanged, Vector2 posRelativeToPrev)
{
var relativeRotationDistance = 0f;
var playfieldMiddle = Vector2.Divide(OsuPlayfield.BASE_SIZE, 2);
if (prevPosChanged.X < playfieldMiddle.X)
{
relativeRotationDistance = Math.Max(
(border_distance_x - prevPosChanged.X) / border_distance_x,
relativeRotationDistance
);
}
else
{
relativeRotationDistance = Math.Max(
(prevPosChanged.X - (OsuPlayfield.BASE_SIZE.X - border_distance_x)) / border_distance_x,
relativeRotationDistance
);
}
if (prevPosChanged.Y < playfieldMiddle.Y)
{
relativeRotationDistance = Math.Max(
(border_distance_y - prevPosChanged.Y) / border_distance_y,
relativeRotationDistance
);
}
else
{
relativeRotationDistance = Math.Max(
(prevPosChanged.Y - (OsuPlayfield.BASE_SIZE.Y - border_distance_y)) / border_distance_y,
relativeRotationDistance
);
}
return rotateVectorTowardsVector(
posRelativeToPrev,
Vector2.Subtract(playfieldMiddle, prevPosChanged),
relativeRotationDistance / 2
);
}
/// <summary>
/// Rotates vector "initial" towards vector "destinantion"
/// </summary>
/// <param name="initial">Vector to rotate to "destination"</param>
/// <param name="destination">Vector "initial" should be rotated to</param>
/// <param name="relativeDistance">The angle the vector should be rotated relative to the difference between the angles of the the two vectors.</param>
/// <returns>Resulting vector</returns>
private Vector2 rotateVectorTowardsVector(Vector2 initial, Vector2 destination, float relativeDistance)
{
var initialAngleRad = Math.Atan2(initial.Y, initial.X);
var destAngleRad = Math.Atan2(destination.Y, destination.X);
var diff = destAngleRad - initialAngleRad;
while (diff < -Math.PI)
{
diff += 2 * Math.PI;
}
while (diff > Math.PI)
{
diff -= 2 * Math.PI;
}
var finalAngleRad = initialAngleRad + relativeDistance * diff;
return new Vector2(
initial.Length * (float)Math.Cos(finalAngleRad),
initial.Length * (float)Math.Sin(finalAngleRad)
);
}
// Background metronome
public void ApplyToDrawableRuleset(DrawableRuleset<OsuHitObject> drawableRuleset)
{
drawableRuleset.Overlays.Add(new TargetBeatContainer());
}
public class TargetBeatContainer : BeatSyncedContainer
{
private PausableSkinnableSound sample;
public TargetBeatContainer()
{
Divisor = 1;
}
[BackgroundDependencyLoader]
private void load()
{
InternalChildren = new Drawable[]
{
sample = new PausableSkinnableSound(new SampleInfo("spinnerbonus")), // TODO: use another sample?
};
}
protected override void OnNewBeat(int beatIndex, TimingControlPoint timingPoint, EffectControlPoint effectPoint, ChannelAmplitudes amplitudes)
{
base.OnNewBeat(beatIndex, timingPoint, effectPoint, amplitudes);
if (!IsBeatSyncedWithTrack) return;
sample?.Play();
}
}
}
}