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osu-lazer/osu.Game.Rulesets.Mania/Edit/ManiaSelectionHandler.cs
Dean Herbert 9c62c90cfc Refactor SelectionBlueprint and MoveSelectionEvent to work in screen-space coordinates
Until now, the implementation of the overrides in `SelectionBlueprint`
have been confusing to the point where I would just implement by
trial-and-error (or copying from an existing implementation). This was
due to a combination of using "object" space coordinates
(ie. the thing the `Blueprint` is operating on) and screen-space coordinates.

This change switches all event related coordinates to screen-space,
which is how we already handle rotation/scale operations. With the
introduction of other editor types where the related objects are
drawables, this also makes a lot more sense.
2021-04-29 16:10:42 +09:00

68 lines
2.3 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.Linq;
using osu.Framework.Allocation;
using osu.Game.Rulesets.Edit;
using osu.Game.Rulesets.Mania.Edit.Blueprints;
using osu.Game.Rulesets.Mania.Objects;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.UI.Scrolling;
using osu.Game.Screens.Edit.Compose.Components;
namespace osu.Game.Rulesets.Mania.Edit
{
public class ManiaSelectionHandler : EditorSelectionHandler
{
[Resolved]
private IScrollingInfo scrollingInfo { get; set; }
[Resolved]
private HitObjectComposer composer { get; set; }
public override bool HandleMovement(MoveSelectionEvent<HitObject> moveEvent)
{
var maniaBlueprint = (ManiaSelectionBlueprint)moveEvent.Blueprint;
int lastColumn = maniaBlueprint.DrawableObject.HitObject.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.
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 =>
{
if (h is ManiaHitObject maniaObj)
maniaObj.Column += columnDelta;
});
}
}
}