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osu-lazer/osu.Game.Rulesets.Mania/Edit/ManiaSelectionHandler.cs

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// 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.Linq;
using osu.Framework.Allocation;
using osu.Game.Rulesets.Edit;
using osu.Game.Rulesets.Mania.Objects;
using osu.Game.Rulesets.Objects;
using osu.Game.Screens.Edit.Compose.Components;
namespace osu.Game.Rulesets.Mania.Edit
{
public partial class ManiaSelectionHandler : EditorSelectionHandler
{
[Resolved]
private HitObjectComposer composer { get; set; } = null!;
public override bool HandleMovement(MoveSelectionEvent<HitObject> moveEvent)
{
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var hitObjectBlueprint = (HitObjectSelectionBlueprint)moveEvent.Blueprint;
int lastColumn = ((ManiaHitObject)hitObjectBlueprint.Item).Column;
performColumnMovement(lastColumn, moveEvent);
return true;
}
private void performColumnMovement(int lastColumn, MoveSelectionEvent<HitObject> moveEvent)
{
var maniaPlayfield = ((ManiaHitObjectComposer)composer).Playfield;
var currentColumn = maniaPlayfield.GetColumnByPosition(moveEvent.Blueprint.ScreenSpaceSelectionPoint + moveEvent.ScreenSpaceDelta);
if (currentColumn == null)
return;
int columnDelta = currentColumn.Index - lastColumn;
if (columnDelta == 0)
return;
int minColumn = int.MaxValue;
int maxColumn = int.MinValue;
// find min/max in an initial pass before actually performing the movement.
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foreach (var obj in EditorBeatmap.SelectedHitObjects.OfType<ManiaHitObject>())
{
if (obj.Column < minColumn)
minColumn = obj.Column;
if (obj.Column > maxColumn)
maxColumn = obj.Column;
}
columnDelta = Math.Clamp(columnDelta, -minColumn, maniaPlayfield.TotalColumns - 1 - maxColumn);
EditorBeatmap.PerformOnSelection(h =>
{
maniaPlayfield.Remove(h);
((ManiaHitObject)h).Column += columnDelta;
maniaPlayfield.Add(h);
});
}
}
}