From 1847f69bf95a95fe7dce07ebb2d4119e946aa470 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Tue, 1 Mar 2022 15:40:19 +0900
Subject: [PATCH] Add basic beatmap offset adjustment control

---
 .../Gameplay/TestSceneBeatmapOffsetControl.cs | 27 ++++++
 .../PlayerSettings/BeatmapOffsetControl.cs    | 88 +++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapOffsetControl.cs
 create mode 100644 osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs

diff --git a/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapOffsetControl.cs b/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapOffsetControl.cs
new file mode 100644
index 0000000000..bd87039797
--- /dev/null
+++ b/osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapOffsetControl.cs
@@ -0,0 +1,27 @@
+// 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 NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Game.Screens.Play.PlayerSettings;
+using osu.Game.Tests.Visual.Ranking;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneBeatmapOffsetControl : OsuTestScene
+    {
+        [Test]
+        public void TestDisplay()
+        {
+            Child = new PlayerSettingsGroup("Some settings")
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Children = new Drawable[]
+                {
+                    new BeatmapOffsetControl(TestSceneHitEventTimingDistributionGraph.CreateDistributedHitEvents(-4.5))
+                }
+            };
+        }
+    }
+}
diff --git a/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs b/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs
new file mode 100644
index 0000000000..c05c5beb31
--- /dev/null
+++ b/osu.Game/Screens/Play/PlayerSettings/BeatmapOffsetControl.cs
@@ -0,0 +1,88 @@
+// 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.Collections.Generic;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Overlays.Settings;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Screens.Ranking.Statistics;
+using osuTK;
+
+namespace osu.Game.Screens.Play.PlayerSettings
+{
+    public class BeatmapOffsetControl : CompositeDrawable
+    {
+        private readonly SettingsButton useAverageButton;
+
+        private readonly double lastPlayAverage;
+
+        public Bindable<double> Current { get; } = new BindableDouble
+        {
+            Default = 0,
+            Value = 0,
+            MinValue = -50,
+            MaxValue = 50,
+            Precision = 0.1,
+        };
+
+        public BeatmapOffsetControl(IReadOnlyList<HitEvent> hitEvents)
+        {
+            RelativeSizeAxes = Axes.X;
+            AutoSizeAxes = Axes.Y;
+
+            FillFlowContainer flow;
+
+            InternalChild = flow = new FillFlowContainer
+            {
+                RelativeSizeAxes = Axes.X,
+                AutoSizeAxes = Axes.Y,
+                Direction = FillDirection.Vertical,
+                Spacing = new Vector2(10),
+                Children = new Drawable[]
+                {
+                    new PlayerSliderBar<double>
+                    {
+                        KeyboardStep = 5,
+                        LabelText = "Beatmap offset",
+                        Current = Current,
+                    },
+                }
+            };
+
+            if (hitEvents.CalculateAverageHitError() is double average)
+            {
+                lastPlayAverage = average;
+
+                flow.AddRange(new Drawable[]
+                {
+                    new OsuSpriteText
+                    {
+                        Text = "Last play:"
+                    },
+                    new HitEventTimingDistributionGraph(hitEvents)
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        Height = 50,
+                    },
+                    new AverageHitError(hitEvents),
+                    useAverageButton = new SettingsButton
+                    {
+                        Text = "Calibrate using last play",
+                        Action = () => Current.Value = lastPlayAverage
+                    },
+                });
+            }
+
+            Current.BindValueChanged(offset =>
+            {
+                if (useAverageButton != null)
+                {
+                    useAverageButton.Enabled.Value = offset.NewValue != lastPlayAverage;
+                }
+            }, true);
+        }
+    }
+}