From 7beb4c3507b0dc13ace923c909b0325eabd2d4ca Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Thu, 4 Jan 2018 16:21:15 +0900
Subject: [PATCH] Initial implementation of a new scrolling hitobject container

---
 .../Visual/TestCaseScrollingHitObjects.cs     | 104 ++++++++++++++++++
 osu.Game.Tests/osu.Game.Tests.csproj          |   1 +
 2 files changed, 105 insertions(+)
 create mode 100644 osu.Game.Tests/Visual/TestCaseScrollingHitObjects.cs

diff --git a/osu.Game.Tests/Visual/TestCaseScrollingHitObjects.cs b/osu.Game.Tests/Visual/TestCaseScrollingHitObjects.cs
new file mode 100644
index 0000000000..2827f70ebe
--- /dev/null
+++ b/osu.Game.Tests/Visual/TestCaseScrollingHitObjects.cs
@@ -0,0 +1,104 @@
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu-framework/master/LICENCE
+
+using OpenTK;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Tests.Visual
+{
+    public class TestCaseScrollingHitObjects : OsuTestCase
+    {
+        public TestCaseScrollingHitObjects()
+        {
+            AddStep("Vertically-scrolling", () => createPlayfield(Direction.Vertical));
+            AddStep("Horizontally-scrolling", () => createPlayfield(Direction.Horizontal));
+
+            AddStep("Add hitobject", addHitObject);
+        }
+
+        private TestPlayfield playfield;
+        private void createPlayfield(Direction scrollingDirection)
+        {
+            if (playfield != null)
+                Remove(playfield);
+            Add(playfield = new TestPlayfield(scrollingDirection));
+        }
+
+        private void addHitObject()
+        {
+            playfield.Add(new TestDrawableHitObject(new HitObject { StartTime = Time.Current + 5000 })
+            {
+                Anchor = playfield.ScrollingDirection == Direction.Horizontal ? Anchor.CentreRight : Anchor.BottomCentre
+            });
+        }
+
+        private class ScrollingHitObjectContainer : Playfield.HitObjectContainer
+        {
+            public double TimeRange = 5000;
+
+            private readonly Direction scrollingDirection;
+
+            public ScrollingHitObjectContainer(Direction scrollingDirection)
+            {
+                this.scrollingDirection = scrollingDirection;
+
+                RelativeSizeAxes = Axes.Both;
+            }
+
+            protected override void Update()
+            {
+                base.Update();
+
+                foreach (var obj in Objects)
+                {
+                    var relativePosition = (Time.Current - obj.HitObject.StartTime) / TimeRange;
+
+                    // Todo: We may need to consider scale here
+                    var finalPosition = (float)relativePosition * DrawSize;
+
+                    switch (scrollingDirection)
+                    {
+                        case Direction.Horizontal:
+                            obj.X = finalPosition.X;
+                            break;
+                        case Direction.Vertical:
+                            obj.Y = finalPosition.Y;
+                            break;
+                    }
+                }
+            }
+        }
+
+        private class TestPlayfield : Playfield
+        {
+            public readonly Direction ScrollingDirection;
+
+            public TestPlayfield(Direction scrollingDirection)
+            {
+                ScrollingDirection = scrollingDirection;
+
+                HitObjects = new ScrollingHitObjectContainer(scrollingDirection);
+            }
+        }
+
+        private class TestDrawableHitObject : DrawableHitObject<HitObject>
+        {
+            public TestDrawableHitObject(HitObject hitObject)
+                : base(hitObject)
+            {
+                Origin = Anchor.Centre;
+                AutoSizeAxes = Axes.Both;
+
+                Add(new Box { Size = new Vector2(75) });
+            }
+
+            protected override void UpdateState(ArmedState state)
+            {
+            }
+        }
+    }
+}
diff --git a/osu.Game.Tests/osu.Game.Tests.csproj b/osu.Game.Tests/osu.Game.Tests.csproj
index 8c04874e75..f47a03990a 100644
--- a/osu.Game.Tests/osu.Game.Tests.csproj
+++ b/osu.Game.Tests/osu.Game.Tests.csproj
@@ -141,6 +141,7 @@
     <Compile Include="Visual\TestCaseResults.cs" />
     <Compile Include="Visual\TestCaseRoomInspector.cs" />
     <Compile Include="Visual\TestCaseScoreCounter.cs" />
+    <Compile Include="Visual\TestCaseScrollingHitObjects.cs" />
     <Compile Include="Visual\TestCaseScrollingPlayfield.cs" />
     <Compile Include="Visual\TestCaseSettings.cs" />
     <Compile Include="Visual\TestCaseSkipButton.cs" />