Merge branch 'master' into spectator-listing

osu.Game.Tests/Visual/Background/TestSceneSeasonalBackgroundLoader.cs

@@ -0,0 +1,200 @@
+// 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;
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.OpenGL.Textures;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Configuration;
+using osu.Game.Graphics.Backgrounds;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Online.API.Requests.Responses;
+
+namespace osu.Game.Tests.Visual.Background
+{
+    public class TestSceneSeasonalBackgroundLoader : ScreenTestScene
+    {
+        [Resolved]
+        private OsuConfigManager config { get; set; }
+
+        [Resolved]
+        private SessionStatics statics { get; set; }
+
+        [Cached(typeof(LargeTextureStore))]
+        private LookupLoggingTextureStore textureStore = new LookupLoggingTextureStore();
+
+        private DummyAPIAccess dummyAPI => (DummyAPIAccess)API;
+
+        private SeasonalBackgroundLoader backgroundLoader;
+        private Container backgroundContainer;
+
+        // in real usages these would be online URLs, but correct execution of this test
+        // shouldn't be coupled to existence of online assets.
+        private static readonly List<string> seasonal_background_urls = new List<string>
+        {
+            "Backgrounds/bg2",
+            "Backgrounds/bg4",
+            "Backgrounds/bg3"
+        };
+
+        [BackgroundDependencyLoader]
+        private void load(LargeTextureStore wrappedStore)
+        {
+            textureStore.AddStore(wrappedStore);
+
+            Add(backgroundContainer = new Container
+            {
+                RelativeSizeAxes = Axes.Both
+            });
+        }
+
+        [SetUp]
+        public void SetUp() => Schedule(() =>
+        {
+            // reset API response in statics to avoid test crosstalk.
+            statics.Set<APISeasonalBackgrounds>(Static.SeasonalBackgrounds, null);
+            textureStore.PerformedLookups.Clear();
+            dummyAPI.SetState(APIState.Online);
+
+            backgroundContainer.Clear();
+        });
+
+        [TestCase(-5)]
+        [TestCase(5)]
+        public void TestAlwaysSeasonal(int daysOffset)
+        {
+            registerBackgroundsResponse(DateTimeOffset.Now.AddDays(daysOffset));
+            setSeasonalBackgroundMode(SeasonalBackgroundMode.Always);
+
+            createLoader();
+
+            for (int i = 0; i < 4; ++i)
+                loadNextBackground();
+
+            AddAssert("all backgrounds cycled", () => new HashSet<string>(textureStore.PerformedLookups).SetEquals(seasonal_background_urls));
+        }
+
+        [TestCase(-5)]
+        [TestCase(5)]
+        public void TestNeverSeasonal(int daysOffset)
+        {
+            registerBackgroundsResponse(DateTimeOffset.Now.AddDays(daysOffset));
+            setSeasonalBackgroundMode(SeasonalBackgroundMode.Never);
+
+            createLoader();
+
+            assertNoBackgrounds();
+        }
+
+        [Test]
+        public void TestSometimesInSeason()
+        {
+            registerBackgroundsResponse(DateTimeOffset.Now.AddDays(5));
+            setSeasonalBackgroundMode(SeasonalBackgroundMode.Sometimes);
+
+            createLoader();
+
+            assertAnyBackground();
+        }
+
+        [Test]
+        public void TestSometimesOutOfSeason()
+        {
+            registerBackgroundsResponse(DateTimeOffset.Now.AddDays(-10));
+            setSeasonalBackgroundMode(SeasonalBackgroundMode.Sometimes);
+
+            createLoader();
+
+            assertNoBackgrounds();
+        }
+
+        [Test]
+        public void TestDelayedConnectivity()
+        {
+            registerBackgroundsResponse(DateTimeOffset.Now.AddDays(30));
+            setSeasonalBackgroundMode(SeasonalBackgroundMode.Always);
+            AddStep("go offline", () => dummyAPI.SetState(APIState.Offline));
+
+            createLoader();
+            assertNoBackgrounds();
+
+            AddStep("go online", () => dummyAPI.SetState(APIState.Online));
+
+            assertAnyBackground();
+        }
+
+        private void registerBackgroundsResponse(DateTimeOffset endDate)
+            => AddStep("setup request handler", () =>
+            {
+                dummyAPI.HandleRequest = request =>
+                {
+                    if (dummyAPI.State.Value != APIState.Online || !(request is GetSeasonalBackgroundsRequest backgroundsRequest))
+                        return;
+
+                    backgroundsRequest.TriggerSuccess(new APISeasonalBackgrounds
+                    {
+                        Backgrounds = seasonal_background_urls.Select(url => new APISeasonalBackground { Url = url }).ToList(),
+                        EndDate = endDate
+                    });
+                };
+            });
+
+        private void setSeasonalBackgroundMode(SeasonalBackgroundMode mode)
+            => AddStep($"set seasonal mode to {mode}", () => config.Set(OsuSetting.SeasonalBackgroundMode, mode));
+
+        private void createLoader()
+        {
+            AddStep("create loader", () =>
+            {
+                if (backgroundLoader != null)
+                    Remove(backgroundLoader);
+
+                LoadComponentAsync(backgroundLoader = new SeasonalBackgroundLoader(), Add);
+            });
+
+            AddUntilStep("wait for loaded", () => backgroundLoader.IsLoaded);
+        }
+
+        private void loadNextBackground()
+        {
+            SeasonalBackground background = null;
+
+            AddStep("create next background", () =>
+            {
+                background = backgroundLoader.LoadNextBackground();
+                LoadComponentAsync(background, bg => backgroundContainer.Child = bg);
+            });
+
+            AddUntilStep("background loaded", () => background.IsLoaded);
+        }
+
+        private void assertAnyBackground()
+        {
+            loadNextBackground();
+            AddAssert("background looked up", () => textureStore.PerformedLookups.Any());
+        }
+
+        private void assertNoBackgrounds()
+        {
+            AddAssert("no background available", () => backgroundLoader.LoadNextBackground() == null);
+            AddAssert("no lookups performed", () => !textureStore.PerformedLookups.Any());
+        }
+
+        private class LookupLoggingTextureStore : LargeTextureStore
+        {
+            public List<string> PerformedLookups { get; } = new List<string>();
+
+            public override Texture Get(string name, WrapMode wrapModeS, WrapMode wrapModeT)
+            {
+                PerformedLookups.Add(name);
+                return base.Get(name, wrapModeS, wrapModeT);
+            }
+        }
+    }
+}

osu.Game/Configuration/OsuConfigManager.cs

@@ -133,6 +133,7 @@ namespace osu.Game.Configuration
             Set(OsuSetting.IntroSequence, IntroSequence.Triangles);
 
             Set(OsuSetting.MenuBackgroundSource, BackgroundSource.Skin);
+            Set(OsuSetting.SeasonalBackgroundMode, SeasonalBackgroundMode.Sometimes);
         }
 
         public OsuConfigManager(Storage storage)
@@ -242,6 +243,7 @@ namespace osu.Game.Configuration
         HitLighting,
         MenuBackgroundSource,
         GameplayDisableWinKey,
+        SeasonalBackgroundMode,
         AutomaticallyDownloadWhenSpectating,
     }
 }

osu.Game/Configuration/SeasonalBackgroundMode.cs

@@ -0,0 +1,23 @@
+// 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.
+
+namespace osu.Game.Configuration
+{
+    public enum SeasonalBackgroundMode
+    {
+        /// <summary>
+        /// Seasonal backgrounds are shown regardless of season, if at all available.
+        /// </summary>
+        Always,
+
+        /// <summary>
+        /// Seasonal backgrounds are shown only during their corresponding season.
+        /// </summary>
+        Sometimes,
+
+        /// <summary>
+        /// Seasonal backgrounds are never shown.
+        /// </summary>
+        Never
+    }
+}

osu.Game/Configuration/SessionStatics.cs

@@ -1,6 +1,8 @@
 // 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.Game.Online.API.Requests.Responses;
+
 namespace osu.Game.Configuration
 {
     /// <summary>
@@ -12,12 +14,19 @@ namespace osu.Game.Configuration
         {
             Set(Static.LoginOverlayDisplayed, false);
             Set(Static.MutedAudioNotificationShownOnce, false);
+            Set<APISeasonalBackgrounds>(Static.SeasonalBackgrounds, null);
         }
     }
 
     public enum Static
     {
         LoginOverlayDisplayed,
-        MutedAudioNotificationShownOnce
+        MutedAudioNotificationShownOnce,
+
+        /// <summary>
+        /// Info about seasonal backgrounds available fetched from API - see <see cref="APISeasonalBackgrounds"/>.
+        /// Value under this lookup can be <c>null</c> if there are no backgrounds available (or API is not reachable).
+        /// </summary>
+        SeasonalBackgrounds,
     }
 }

osu.Game/Graphics/Backgrounds/SeasonalBackgroundLoader.cs

@@ -0,0 +1,104 @@
+// 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;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Textures;
+using osu.Framework.Utils;
+using osu.Game.Configuration;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Online.API.Requests.Responses;
+
+namespace osu.Game.Graphics.Backgrounds
+{
+    [LongRunningLoad]
+    public class SeasonalBackgroundLoader : Component
+    {
+        /// <summary>
+        /// Fired when background should be changed due to receiving backgrounds from API
+        /// or when the user setting is changed (as it might require unloading the seasonal background).
+        /// </summary>
+        public event Action SeasonalBackgroundChanged;
+
+        [Resolved]
+        private IAPIProvider api { get; set; }
+
+        private readonly IBindable<APIState> apiState = new Bindable<APIState>();
+        private Bindable<SeasonalBackgroundMode> seasonalBackgroundMode;
+        private Bindable<APISeasonalBackgrounds> seasonalBackgrounds;
+
+        private int current;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuConfigManager config, SessionStatics sessionStatics)
+        {
+            seasonalBackgroundMode = config.GetBindable<SeasonalBackgroundMode>(OsuSetting.SeasonalBackgroundMode);
+            seasonalBackgroundMode.BindValueChanged(_ => SeasonalBackgroundChanged?.Invoke());
+
+            seasonalBackgrounds = sessionStatics.GetBindable<APISeasonalBackgrounds>(Static.SeasonalBackgrounds);
+            seasonalBackgrounds.BindValueChanged(_ => SeasonalBackgroundChanged?.Invoke());
+
+            apiState.BindTo(api.State);
+            apiState.BindValueChanged(fetchSeasonalBackgrounds, true);
+        }
+
+        private void fetchSeasonalBackgrounds(ValueChangedEvent<APIState> stateChanged)
+        {
+            if (seasonalBackgrounds.Value != null || stateChanged.NewValue != APIState.Online)
+                return;
+
+            var request = new GetSeasonalBackgroundsRequest();
+            request.Success += response =>
+            {
+                seasonalBackgrounds.Value = response;
+                current = RNG.Next(0, response.Backgrounds?.Count ?? 0);
+            };
+
+            api.PerformAsync(request);
+        }
+
+        public SeasonalBackground LoadNextBackground()
+        {
+            if (seasonalBackgroundMode.Value == SeasonalBackgroundMode.Never
+                || (seasonalBackgroundMode.Value == SeasonalBackgroundMode.Sometimes && !isInSeason))
+            {
+                return null;
+            }
+
+            var backgrounds = seasonalBackgrounds.Value?.Backgrounds;
+            if (backgrounds == null || !backgrounds.Any())
+                return null;
+
+            current = (current + 1) % backgrounds.Count;
+            string url = backgrounds[current].Url;
+
+            return new SeasonalBackground(url);
+        }
+
+        private bool isInSeason => seasonalBackgrounds.Value != null && DateTimeOffset.Now < seasonalBackgrounds.Value.EndDate;
+    }
+
+    [LongRunningLoad]
+    public class SeasonalBackground : Background
+    {
+        private readonly string url;
+        private const string fallback_texture_name = @"Backgrounds/bg1";
+
+        public SeasonalBackground(string url)
+        {
+            this.url = url;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(LargeTextureStore textures)
+        {
+            Sprite.Texture = textures.Get(url) ?? textures.Get(fallback_texture_name);
+            // ensure we're not loading in without a transition.
+            this.FadeInFromZero(200, Easing.InOutSine);
+        }
+    }
+}

osu.Game/Online/API/Requests/GetSeasonalBackgroundsRequest.cs

@@ -0,0 +1,12 @@
+// 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.Game.Online.API.Requests.Responses;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class GetSeasonalBackgroundsRequest : APIRequest<APISeasonalBackgrounds>
+    {
+        protected override string Target => @"seasonal-backgrounds";
+    }
+}

osu.Game/Online/API/Requests/Responses/APISeasonalBackgrounds.cs

@@ -0,0 +1,24 @@
+// 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;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    public class APISeasonalBackgrounds
+    {
+        [JsonProperty("ends_at")]
+        public DateTimeOffset EndDate;
+
+        [JsonProperty("backgrounds")]
+        public List<APISeasonalBackground> Backgrounds { get; set; }
+    }
+
+    public class APISeasonalBackground
+    {
+        [JsonProperty("url")]
+        public string Url { get; set; }
+    }
+}

osu.Game/Overlays/Settings/Sections/Audio/MainMenuSettings.cs

@@ -39,6 +39,12 @@ namespace osu.Game.Overlays.Settings.Sections.Audio
                     LabelText = "Background source",
                     Current = config.GetBindable<BackgroundSource>(OsuSetting.MenuBackgroundSource),
                     Items = Enum.GetValues(typeof(BackgroundSource)).Cast<BackgroundSource>()
+                },
+                new SettingsDropdown<SeasonalBackgroundMode>
+                {
+                    LabelText = "Seasonal backgrounds",
+                    Current = config.GetBindable<SeasonalBackgroundMode>(OsuSetting.SeasonalBackgroundMode),
+                    Items = Enum.GetValues(typeof(SeasonalBackgroundMode)).Cast<SeasonalBackgroundMode>()
                 }
             };
         }

osu.Game/Screens/Backgrounds/BackgroundScreenDefault.cs

@@ -1,6 +1,7 @@
 // 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.Threading;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -25,6 +26,7 @@ namespace osu.Game.Screens.Backgrounds
         private Bindable<Skin> skin;
         private Bindable<BackgroundSource> mode;
         private Bindable<IntroSequence> introSequence;
+        private readonly SeasonalBackgroundLoader seasonalBackgroundLoader = new SeasonalBackgroundLoader();
 
         [Resolved]
         private IBindable<WorkingBeatmap> beatmap { get; set; }
@@ -47,10 +49,12 @@ namespace osu.Game.Screens.Backgrounds
             mode.ValueChanged += _ => Next();
             beatmap.ValueChanged += _ => Next();
             introSequence.ValueChanged += _ => Next();
+            seasonalBackgroundLoader.SeasonalBackgroundChanged += Next;
 
             currentDisplay = RNG.Next(0, background_count);
 
-            display(createBackground());
+            LoadComponentAsync(seasonalBackgroundLoader);
+            Next();
         }
 
         private void display(Background newBackground)
@@ -63,11 +67,14 @@ namespace osu.Game.Screens.Backgrounds
         }
 
         private ScheduledDelegate nextTask;
+        private CancellationTokenSource cancellationTokenSource;
 
         public void Next()
         {
             nextTask?.Cancel();
-            nextTask = Scheduler.AddDelayed(() => { LoadComponentAsync(createBackground(), display); }, 100);
+            cancellationTokenSource?.Cancel();
+            cancellationTokenSource = new CancellationTokenSource();
+            nextTask = Scheduler.AddDelayed(() => LoadComponentAsync(createBackground(), display, cancellationTokenSource.Token), 100);
         }
 
         private Background createBackground()
@@ -75,6 +82,14 @@ namespace osu.Game.Screens.Backgrounds
             Background newBackground;
             string backgroundName;
 
+            var seasonalBackground = seasonalBackgroundLoader.LoadNextBackground();
+
+            if (seasonalBackground != null)
+            {
+                seasonalBackground.Depth = currentDisplay;
+                return seasonalBackground;
+            }
+
             switch (introSequence.Value)
             {
                 case IntroSequence.Welcome: