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127 lines
4.8 KiB
C#
127 lines
4.8 KiB
C#
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// 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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using System.Linq;
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using System.Threading;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Game.Audio;
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using osu.Game.Beatmaps;
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using osu.Game.Beatmaps.ControlPoints;
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using osu.Game.Rulesets.Objects;
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using osu.Game.Rulesets.Objects.Types;
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using osu.Game.Screens.Edit;
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using osu.Game.Screens.Edit.Compose;
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namespace osu.Game.Rulesets.Edit
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{
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/// <summary>
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/// A blueprint which governs the creation of a new <see cref="HitObject"/> to actualisation.
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/// </summary>
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public abstract partial class HitObjectPlacementBlueprint : PlacementBlueprint
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{
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/// <summary>
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/// Whether the sample bank should be taken from the previous hit object.
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/// </summary>
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public bool AutomaticBankAssignment { get; set; }
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/// <summary>
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/// The <see cref="HitObject"/> that is being placed.
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/// </summary>
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public readonly HitObject HitObject;
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[Resolved]
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protected EditorClock EditorClock { get; private set; } = null!;
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[Resolved]
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private EditorBeatmap beatmap { get; set; } = null!;
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private Bindable<double> startTimeBindable = null!;
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private HitObject? getPreviousHitObject() => beatmap.HitObjects.TakeWhile(h => h.StartTime <= startTimeBindable.Value).LastOrDefault();
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[Resolved]
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private IPlacementHandler placementHandler { get; set; } = null!;
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protected HitObjectPlacementBlueprint(HitObject hitObject)
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{
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HitObject = hitObject;
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// adding the default hit sample should be the case regardless of the ruleset.
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HitObject.Samples.Add(new HitSampleInfo(HitSampleInfo.HIT_NORMAL));
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}
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[BackgroundDependencyLoader]
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private void load()
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{
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startTimeBindable = HitObject.StartTimeBindable.GetBoundCopy();
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startTimeBindable.BindValueChanged(_ => ApplyDefaultsToHitObject(), true);
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}
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protected override void BeginPlacement(bool commitStart = false)
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{
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base.BeginPlacement(commitStart);
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placementHandler.BeginPlacement(HitObject);
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}
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public override void EndPlacement(bool commit)
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{
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base.EndPlacement(commit);
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placementHandler.EndPlacement(HitObject, IsValidForPlacement && commit);
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}
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/// <summary>
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/// Updates the time and position of this <see cref="HitObjectPlacementBlueprint"/> based on the provided snap information.
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/// </summary>
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/// <param name="result">The snap result information.</param>
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public override void UpdateTimeAndPosition(SnapResult result)
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{
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if (PlacementActive == PlacementState.Waiting)
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{
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HitObject.StartTime = result.Time ?? EditorClock.CurrentTime;
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if (HitObject is IHasComboInformation comboInformation)
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comboInformation.UpdateComboInformation(getPreviousHitObject() as IHasComboInformation);
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}
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var lastHitObject = getPreviousHitObject();
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if (AutomaticBankAssignment)
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{
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// Create samples based on the sample settings of the previous hit object
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if (lastHitObject != null)
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{
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for (int i = 0; i < HitObject.Samples.Count; i++)
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HitObject.Samples[i] = lastHitObject.CreateHitSampleInfo(HitObject.Samples[i].Name);
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}
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}
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else
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{
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var lastHitNormal = lastHitObject?.Samples?.FirstOrDefault(o => o.Name == HitSampleInfo.HIT_NORMAL);
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if (lastHitNormal != null)
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{
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// Only inherit the volume from the previous hit object
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for (int i = 0; i < HitObject.Samples.Count; i++)
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HitObject.Samples[i] = HitObject.Samples[i].With(newVolume: lastHitNormal.Volume);
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}
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}
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if (HitObject is IHasRepeats hasRepeats)
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{
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// Make sure all the node samples are identical to the hit object's samples
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for (int i = 0; i < hasRepeats.NodeSamples.Count; i++)
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hasRepeats.NodeSamples[i] = HitObject.Samples.Select(o => o.With()).ToList();
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}
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}
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/// <summary>
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/// Invokes <see cref="Objects.HitObject.ApplyDefaults(ControlPointInfo,IBeatmapDifficultyInfo,CancellationToken)"/>,
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/// refreshing <see cref="Objects.HitObject.NestedHitObjects"/> and parameters for the <see cref="HitObject"/>.
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/// </summary>
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protected void ApplyDefaultsToHitObject() => HitObject.ApplyDefaults(beatmap.ControlPointInfo, beatmap.Difficulty);
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}
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}
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