From 32ad2166698528574947aca2c17fe28eb35d2757 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Thu, 28 Apr 2022 22:58:32 +0900
Subject: [PATCH] Allow dragging the osu! logo

Logic borrowed from `NowPlayingOverlay`.
---
 osu.Game/Screens/Menu/OsuLogo.cs | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/osu.Game/Screens/Menu/OsuLogo.cs b/osu.Game/Screens/Menu/OsuLogo.cs
index 1d3aef0653..1217a28fe7 100644
--- a/osu.Game/Screens/Menu/OsuLogo.cs
+++ b/osu.Game/Screens/Menu/OsuLogo.cs
@@ -109,7 +109,7 @@ namespace osu.Game.Screens.Menu
                     AutoSizeAxes = Axes.Both,
                     Children = new Drawable[]
                     {
-                        logoBounceContainer = new Container
+                        logoBounceContainer = new DragContainer
                         {
                             AutoSizeAxes = Axes.Both,
                             Children = new Drawable[]
@@ -402,5 +402,26 @@ namespace osu.Game.Screens.Menu
             impactContainer.ScaleTo(0.96f);
             impactContainer.ScaleTo(1.12f, 250);
         }
+
+        private class DragContainer : Container
+        {
+            protected override bool OnDragStart(DragStartEvent e) => true;
+
+            protected override void OnDrag(DragEvent e)
+            {
+                Vector2 change = e.MousePosition - e.MouseDownPosition;
+
+                // Diminish the drag distance as we go further to simulate "rubber band" feeling.
+                change *= change.Length <= 0 ? 0 : MathF.Pow(change.Length, 0.6f) / change.Length;
+
+                this.MoveTo(change);
+            }
+
+            protected override void OnDragEnd(DragEndEvent e)
+            {
+                this.MoveTo(Vector2.Zero, 800, Easing.OutElastic);
+                base.OnDragEnd(e);
+            }
+        }
     }
 }