osu/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.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.Linq;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Screens.Edit.Compose.Components;
using osuTK;
namespace osu.Game.Rulesets.Osu.Edit
{
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public class OsuSelectionHandler : SelectionHandler
{
public override bool HandleMovement(MoveSelectionEvent moveEvent)
{
Vector2 minPosition = new Vector2(float.MaxValue, float.MaxValue);
Vector2 maxPosition = new Vector2(float.MinValue, float.MinValue);
// Go through all hitobjects to make sure they would remain in the bounds of the editor after movement, before any movement is attempted
foreach (var h in SelectedHitObjects.OfType<OsuHitObject>())
{
if (h is Spinner)
{
// Spinners don't support position adjustments
continue;
}
// Stacking is not considered
minPosition = Vector2.ComponentMin(minPosition, Vector2.ComponentMin(h.EndPosition + moveEvent.InstantDelta, h.Position + moveEvent.InstantDelta));
maxPosition = Vector2.ComponentMax(maxPosition, Vector2.ComponentMax(h.EndPosition + moveEvent.InstantDelta, h.Position + moveEvent.InstantDelta));
}
if (minPosition.X < 0 || minPosition.Y < 0 || maxPosition.X > DrawWidth || maxPosition.Y > DrawHeight)
return false;
foreach (var h in SelectedHitObjects.OfType<OsuHitObject>())
{
if (h is Spinner)
{
// Spinners don't support position adjustments
continue;
}
h.Position += moveEvent.InstantDelta;
}
return true;
}
}
}