mirror of https://github.com/ppy/osu
86 lines
2.8 KiB
C#
86 lines
2.8 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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#nullable disable
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using System.Linq;
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using System.Threading;
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using osu.Framework.Bindables;
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using osu.Game.Audio;
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using osu.Game.Rulesets.Objects;
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namespace osu.Game.Rulesets.Taiko.Objects
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{
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/// <summary>
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/// Base class for taiko hitobjects that can become strong (large).
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/// </summary>
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public abstract class TaikoStrongableHitObject : TaikoHitObject
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{
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/// <summary>
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/// Scale multiplier for a strong drawable taiko hit object.
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/// </summary>
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public const float STRONG_SCALE = 1 / 0.65f;
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/// <summary>
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/// Default size of a strong drawable taiko hit object.
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/// </summary>
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public const float DEFAULT_STRONG_SIZE = DEFAULT_SIZE * STRONG_SCALE;
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public readonly Bindable<bool> IsStrongBindable = new BindableBool();
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/// <summary>
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/// Whether this HitObject is a "strong" type.
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/// Strong hit objects give more points for hitting the hit object with both keys.
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/// </summary>
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public bool IsStrong
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{
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get => IsStrongBindable.Value;
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set => IsStrongBindable.Value = value;
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}
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protected TaikoStrongableHitObject()
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{
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IsStrongBindable.BindValueChanged(_ => updateSamplesFromType());
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SamplesBindable.BindCollectionChanged((_, _) => updateTypeFromSamples());
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}
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private void updateTypeFromSamples()
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{
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IsStrong = getStrongSamples().Any();
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}
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private void updateSamplesFromType()
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{
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var strongSamples = getStrongSamples();
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if (IsStrongBindable.Value != strongSamples.Any())
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{
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if (IsStrongBindable.Value)
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Samples.Add(CreateHitSampleInfo(HitSampleInfo.HIT_FINISH));
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else
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{
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foreach (var sample in strongSamples)
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Samples.Remove(sample);
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}
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}
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}
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private HitSampleInfo[] getStrongSamples() => Samples.Where(s => s.Name == HitSampleInfo.HIT_FINISH).ToArray();
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protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
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{
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base.CreateNestedHitObjects(cancellationToken);
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if (IsStrong)
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AddNested(CreateStrongNestedHit(this.GetEndTime()));
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}
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/// <summary>
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/// Creates a <see cref="StrongNestedHitObject"/> representing a second hit on this object.
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/// This is only called if <see cref="IsStrong"/> is true.
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/// </summary>
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/// <param name="startTime">The start time of the nested hit.</param>
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protected abstract StrongNestedHitObject CreateStrongNestedHit(double startTime);
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}
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}
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