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126 lines
4.8 KiB
C#
126 lines
4.8 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System.Linq;
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using osu.Framework.Allocation;
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using osu.Framework.Input.Events;
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using osu.Framework.Timing;
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using osu.Game.Rulesets.Edit;
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using osu.Game.Rulesets.Mania.Edit.Blueprints;
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using osu.Game.Rulesets.Mania.Objects;
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using osu.Game.Rulesets.UI;
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using osu.Game.Rulesets.UI.Scrolling;
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using osu.Game.Screens.Edit.Compose.Components;
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using osuTK;
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namespace osu.Game.Rulesets.Mania.Edit
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{
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public class ManiaSelectionHandler : SelectionHandler
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{
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[Resolved]
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private IScrollingInfo scrollingInfo { get; set; }
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[Resolved]
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private IManiaHitObjectComposer composer { get; set; }
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private IClock editorClock;
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[BackgroundDependencyLoader]
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private void load(IAdjustableClock clock)
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{
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editorClock = clock;
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}
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public override void HandleDrag(SelectionBlueprint blueprint, DragEvent dragEvent)
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{
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adjustOrigins((ManiaSelectionBlueprint)blueprint);
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performDragMovement(dragEvent);
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performColumnMovement(dragEvent);
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base.HandleDrag(blueprint, dragEvent);
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}
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/// <summary>
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/// Ensures that the position of hitobjects remains centred to the mouse position.
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/// E.g. The hitobject position will change if the editor scrolls while a hitobject is dragged.
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/// </summary>
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/// <param name="reference">The <see cref="ManiaSelectionBlueprint"/> that received the drag event.</param>
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private void adjustOrigins(ManiaSelectionBlueprint reference)
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{
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var referenceParent = (HitObjectContainer)reference.HitObject.Parent;
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float offsetFromReferenceOrigin = reference.DragPosition.Y - reference.HitObject.OriginPosition.Y;
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float targetPosition = referenceParent.ToLocalSpace(reference.ScreenSpaceDragPosition).Y - offsetFromReferenceOrigin;
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// Flip the vertical coordinate space when scrolling downwards
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if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
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targetPosition = targetPosition - referenceParent.DrawHeight;
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float movementDelta = targetPosition - reference.HitObject.Position.Y;
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foreach (var b in SelectedBlueprints.OfType<ManiaSelectionBlueprint>())
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b.HitObject.Y += movementDelta;
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}
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private void performDragMovement(DragEvent dragEvent)
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{
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foreach (var b in SelectedBlueprints)
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{
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var hitObject = b.HitObject;
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var objectParent = (HitObjectContainer)hitObject.Parent;
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// Using the hitobject position is required since AdjustPosition can be invoked multiple times per frame
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// without the position having been updated by the parenting ScrollingHitObjectContainer
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hitObject.Y += dragEvent.Delta.Y;
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float targetPosition;
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// If we're scrolling downwards, a position of 0 is actually further away from the hit target
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// so we need to flip the vertical coordinate in the hitobject container's space
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if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
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targetPosition = -hitObject.Position.Y;
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else
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targetPosition = hitObject.Position.Y;
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objectParent.Remove(hitObject);
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hitObject.HitObject.StartTime = scrollingInfo.Algorithm.TimeAt(targetPosition,
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editorClock.CurrentTime,
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scrollingInfo.TimeRange.Value,
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objectParent.DrawHeight);
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objectParent.Add(hitObject);
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}
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}
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private void performColumnMovement(DragEvent dragEvent)
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{
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var lastColumn = composer.ColumnAt(dragEvent.ScreenSpaceLastMousePosition);
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var currentColumn = composer.ColumnAt(dragEvent.ScreenSpaceMousePosition);
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if (lastColumn == null || currentColumn == null)
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return;
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int columnDelta = currentColumn.Index - lastColumn.Index;
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if (columnDelta == 0)
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return;
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int minColumn = int.MaxValue;
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int maxColumn = int.MinValue;
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foreach (var obj in SelectedHitObjects.OfType<ManiaHitObject>())
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{
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if (obj.Column < minColumn)
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minColumn = obj.Column;
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if (obj.Column > maxColumn)
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maxColumn = obj.Column;
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}
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columnDelta = MathHelper.Clamp(columnDelta, -minColumn, composer.TotalColumns - 1 - maxColumn);
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foreach (var obj in SelectedHitObjects.OfType<ManiaHitObject>())
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obj.Column += columnDelta;
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}
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}
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}
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