Implement left and right stage images

osu.Game.Rulesets.Mania/Skinning/LegacyStageBackground.cs

@@ -1,11 +1,61 @@
 // 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 osu.Framework.Graphics.Containers;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Skinning
 {
-    public class LegacyStageBackground : CompositeDrawable
+    public class LegacyStageBackground : LegacyManiaElement
     {
+        private Drawable leftSprite;
+        private Drawable rightSprite;
+
+        public LegacyStageBackground()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            string leftImage = GetManiaSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.LeftStageImage)?.Value
+                               ?? "mania-stage-left";
+
+            string rightImage = GetManiaSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.RightStageImage)?.Value
+                                ?? "mania-stage-right";
+
+            InternalChildren = new[]
+            {
+                leftSprite = new Sprite
+                {
+                    Anchor = Anchor.TopLeft,
+                    Origin = Anchor.TopRight,
+                    X = 0.05f,
+                    Texture = skin.GetTexture(leftImage),
+                },
+                rightSprite = new Sprite
+                {
+                    Anchor = Anchor.TopRight,
+                    Origin = Anchor.TopLeft,
+                    X = -0.05f,
+                    Texture = skin.GetTexture(rightImage)
+                }
+            };
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (leftSprite?.Height > 0)
+                leftSprite.Scale = new Vector2(DrawHeight / leftSprite.Height);
+
+            if (rightSprite?.Height > 0)
+                rightSprite.Scale = new Vector2(DrawHeight / rightSprite.Height);
+        }
     }
 }

osu.Game.Rulesets.Mania/UI/Components/DefaultStageBackground.cs

@@ -1,11 +1,30 @@
 // 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 osu.Framework.Allocation;
+using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.UI.Components
 {
     public class DefaultStageBackground : CompositeDrawable
     {
+        public DefaultStageBackground()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            InternalChild = new Box
+            {
+                Name = "Background",
+                RelativeSizeAxes = Axes.Both,
+                Colour = Color4.Black
+            };
+        }
     }
 }

osu.Game.Rulesets.Mania/UI/Stage.cs

@@ -6,7 +6,6 @@ using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
@@ -72,11 +71,9 @@ namespace osu.Game.Rulesets.Mania.UI
                     AutoSizeAxes = Axes.X,
                     Children = new Drawable[]
                     {
-                        new Box
+                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground), _ => new DefaultStageBackground())
                         {
-                            Name = "Background",
+                            RelativeSizeAxes = Axes.Both
-                            RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black
                         },
                         columnFlow = new FillFlowContainer<Column>
                         {

osu.Game/Skinning/LegacyManiaSkinConfigurationLookup.cs

@@ -40,6 +40,8 @@ namespace osu.Game.Skinning
         JudgementLineColour,
         ColumnBackgroundColour,
         ColumnLightColour,
-        MinimumColumnWidth
+        MinimumColumnWidth,
+        LeftStageImage,
+        RightStageImage,
     }
 }

osu.Game/Skinning/LegacySkin.cs

@@ -243,6 +243,12 @@ namespace osu.Game.Skinning
                 case LegacyManiaSkinConfigurationLookups.KeyImageDown:
                     Debug.Assert(maniaLookup.TargetColumn != null);
                     return SkinUtils.As<TValue>(getManiaImage(existing, $"KeyImage{maniaLookup.TargetColumn}D"));
+
+                case LegacyManiaSkinConfigurationLookups.LeftStageImage:
+                    return SkinUtils.As<TValue>(getManiaImage(existing, "StageLeft"));
+
+                case LegacyManiaSkinConfigurationLookups.RightStageImage:
+                    return SkinUtils.As<TValue>(getManiaImage(existing, "StageRight"));
             }
 
             return null;