mirror of https://github.com/ppy/osu
102 lines
3.9 KiB
C#
102 lines
3.9 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 System;
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using System.Collections.Generic;
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using System.Linq;
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using osu.Game.Beatmaps;
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using osu.Game.Rulesets.Edit;
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using osu.Game.Rulesets.Edit.Tools;
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using osu.Game.Rulesets.Mods;
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using osu.Game.Rulesets.Objects;
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using osu.Game.Rulesets.Osu.Objects;
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using osu.Game.Rulesets.UI;
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using osu.Game.Screens.Edit.Compose.Components;
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namespace osu.Game.Rulesets.Osu.Edit
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{
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public class OsuHitObjectComposer : HitObjectComposer<OsuHitObject>
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{
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public OsuHitObjectComposer(Ruleset ruleset)
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: base(ruleset)
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{
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}
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protected override DrawableRuleset<OsuHitObject> CreateDrawableRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
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=> new DrawableOsuEditRuleset(ruleset, beatmap, mods);
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protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => new HitObjectCompositionTool[]
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{
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new HitCircleCompositionTool(),
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new SliderCompositionTool(),
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new SpinnerCompositionTool()
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};
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protected override ComposeBlueprintContainer CreateBlueprintContainer() => new OsuBlueprintContainer(HitObjects);
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protected override DistanceSnapGrid CreateDistanceSnapGrid(IEnumerable<HitObject> selectedHitObjects)
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{
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if (BlueprintContainer.CurrentTool is SpinnerCompositionTool)
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return null;
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var objects = selectedHitObjects.ToList();
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if (objects.Count == 0)
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return createGrid(h => h.StartTime <= EditorClock.CurrentTime);
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double minTime = objects.Min(h => h.StartTime);
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return createGrid(h => h.StartTime < minTime, objects.Count + 1);
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}
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/// <summary>
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/// Creates a grid from the last <see cref="HitObject"/> matching a predicate to a target <see cref="HitObject"/>.
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/// </summary>
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/// <param name="sourceSelector">A predicate that matches <see cref="HitObject"/>s where the grid can start from.
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/// Only the last <see cref="HitObject"/> matching the predicate is used.</param>
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/// <param name="targetOffset">An offset from the <see cref="HitObject"/> selected via <paramref name="sourceSelector"/> at which the grid should stop.</param>
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/// <returns>The <see cref="OsuDistanceSnapGrid"/> from a selected <see cref="HitObject"/> to a target <see cref="HitObject"/>.</returns>
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private OsuDistanceSnapGrid createGrid(Func<HitObject, bool> sourceSelector, int targetOffset = 1)
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{
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if (targetOffset < 1) throw new ArgumentOutOfRangeException(nameof(targetOffset));
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int sourceIndex = -1;
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for (int i = 0; i < EditorBeatmap.HitObjects.Count; i++)
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{
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if (!sourceSelector(EditorBeatmap.HitObjects[i]))
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break;
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sourceIndex = i;
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}
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if (sourceIndex == -1)
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return null;
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HitObject sourceObject = EditorBeatmap.HitObjects[sourceIndex];
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int targetIndex = sourceIndex + targetOffset;
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HitObject targetObject = null;
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// Keep advancing the target object while its start time falls before the end time of the source object
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while (true)
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{
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if (targetIndex >= EditorBeatmap.HitObjects.Count)
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break;
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if (EditorBeatmap.HitObjects[targetIndex].StartTime >= sourceObject.GetEndTime())
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{
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targetObject = EditorBeatmap.HitObjects[targetIndex];
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break;
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}
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targetIndex++;
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}
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if (sourceObject is Spinner)
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return null;
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return new OsuDistanceSnapGrid((OsuHitObject)sourceObject, (OsuHitObject)targetObject);
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}
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}
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}
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