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118 lines
4.4 KiB
C#
118 lines
4.4 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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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Input.Events;
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using osu.Framework.Timing;
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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.Screens.Edit.Compose;
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using osuTK;
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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 class PlacementBlueprint : CompositeDrawable
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{
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/// <summary>
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/// Whether the <see cref="HitObject"/> is currently mid-placement, but has not necessarily finished being placed.
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/// </summary>
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public bool PlacementActive { get; private 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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protected readonly HitObject HitObject;
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protected IClock EditorClock { get; private set; }
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private readonly IBindable<WorkingBeatmap> beatmap = new Bindable<WorkingBeatmap>();
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[Resolved]
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private IPlacementHandler placementHandler { get; set; }
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protected PlacementBlueprint(HitObject hitObject)
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{
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HitObject = hitObject;
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RelativeSizeAxes = Axes.Both;
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// This is required to allow the blueprint's position to be updated via OnMouseMove/Handle
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// on the same frame it is made visible via a PlacementState change.
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AlwaysPresent = true;
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}
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[BackgroundDependencyLoader]
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private void load(IBindable<WorkingBeatmap> beatmap, IAdjustableClock clock)
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{
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this.beatmap.BindTo(beatmap);
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EditorClock = clock;
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ApplyDefaultsToHitObject();
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}
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/// <summary>
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/// Signals that the placement of <see cref="HitObject"/> has started.
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/// </summary>
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/// <param name="startTime">The start time of <see cref="HitObject"/> at the placement point. If null, the current clock time is used.</param>
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/// <param name="commitStart">Whether this call is committing a value for HitObject.StartTime and continuing with further adjustments.</param>
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protected void BeginPlacement(double? startTime = null, bool commitStart = false)
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{
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HitObject.StartTime = startTime ?? EditorClock.CurrentTime;
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placementHandler.BeginPlacement(HitObject);
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PlacementActive |= commitStart;
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}
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/// <summary>
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/// Signals that the placement of <see cref="HitObject"/> has finished.
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/// This will destroy this <see cref="PlacementBlueprint"/>, and add the HitObject.StartTime to the <see cref="Beatmap"/>.
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/// </summary>
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/// <param name="commit">Whether the object should be committed.</param>
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public void EndPlacement(bool commit)
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{
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if (!PlacementActive)
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BeginPlacement();
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placementHandler.EndPlacement(HitObject, commit);
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PlacementActive = false;
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}
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/// <summary>
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/// Updates the position of this <see cref="PlacementBlueprint"/> to a new screen-space position.
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/// </summary>
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/// <param name="screenSpacePosition">The screen-space position.</param>
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public abstract void UpdatePosition(Vector2 screenSpacePosition);
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/// <summary>
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/// Invokes <see cref="Objects.HitObject.ApplyDefaults(ControlPointInfo,BeatmapDifficulty)"/>,
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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.Value.Beatmap.ControlPointInfo, beatmap.Value.Beatmap.BeatmapInfo.BaseDifficulty);
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public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => Parent?.ReceivePositionalInputAt(screenSpacePos) ?? false;
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protected override bool Handle(UIEvent e)
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{
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base.Handle(e);
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switch (e)
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{
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case ScrollEvent _:
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return false;
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case MouseButtonEvent _:
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return true;
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default:
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return false;
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}
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}
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}
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}
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