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osu-lazer/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs

102 lines
3.9 KiB
C#

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