mirror of
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230 lines
7.7 KiB
C#
230 lines
7.7 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using JetBrains.Annotations;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Extensions.ObjectExtensions;
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using osu.Game.Beatmaps;
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using osu.Game.Database;
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using osu.Game.Online.Spectator;
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using osu.Game.Replays;
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using osu.Game.Rulesets;
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using osu.Game.Scoring;
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using osu.Game.Users;
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namespace osu.Game.Screens.Spectate
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{
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/// <summary>
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/// A <see cref="OsuScreen"/> which spectates one or more users.
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/// </summary>
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public abstract class SpectatorScreen : OsuScreen
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{
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protected IReadOnlyList<int> UserIds => userIds;
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private readonly List<int> userIds = new List<int>();
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[Resolved]
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private BeatmapManager beatmaps { get; set; }
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[Resolved]
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private RulesetStore rulesets { get; set; }
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[Resolved]
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private SpectatorClient spectatorClient { get; set; }
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[Resolved]
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private UserLookupCache userLookupCache { get; set; }
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private readonly IBindableDictionary<int, SpectatorState> playingUserStates = new BindableDictionary<int, SpectatorState>();
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private readonly Dictionary<int, User> userMap = new Dictionary<int, User>();
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private readonly Dictionary<int, GameplayState> gameplayStates = new Dictionary<int, GameplayState>();
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private IBindable<WeakReference<BeatmapSetInfo>> managerUpdated;
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/// <summary>
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/// Creates a new <see cref="SpectatorScreen"/>.
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/// </summary>
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/// <param name="userIds">The users to spectate.</param>
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protected SpectatorScreen(params int[] userIds)
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{
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this.userIds.AddRange(userIds);
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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userLookupCache.GetUsersAsync(userIds.ToArray()).ContinueWith(users => Schedule(() =>
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{
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foreach (var u in users.Result)
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{
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if (u == null)
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continue;
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userMap[u.Id] = u;
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}
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playingUserStates.BindTo(spectatorClient.PlayingUserStates);
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playingUserStates.BindCollectionChanged(onPlayingUserStatesChanged, true);
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managerUpdated = beatmaps.ItemUpdated.GetBoundCopy();
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managerUpdated.BindValueChanged(beatmapUpdated);
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foreach (var (id, _) in userMap)
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spectatorClient.WatchUser(id);
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}));
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}
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private void beatmapUpdated(ValueChangedEvent<WeakReference<BeatmapSetInfo>> e)
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{
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if (!e.NewValue.TryGetTarget(out var beatmapSet))
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return;
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foreach (var (userId, _) in userMap)
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{
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if (!playingUserStates.TryGetValue(userId, out var userState))
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continue;
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if (beatmapSet.Beatmaps.Any(b => b.OnlineBeatmapID == userState.BeatmapID))
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updateGameplayState(userId);
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}
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}
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private void onPlayingUserStatesChanged(object sender, NotifyDictionaryChangedEventArgs<int, SpectatorState> e)
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{
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switch (e.Action)
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{
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case NotifyDictionaryChangedAction.Add:
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foreach (var (userId, state) in e.NewItems.AsNonNull())
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onUserStateAdded(userId, state);
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break;
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case NotifyDictionaryChangedAction.Remove:
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foreach (var (userId, _) in e.OldItems.AsNonNull())
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onUserStateRemoved(userId);
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break;
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case NotifyDictionaryChangedAction.Replace:
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foreach (var (userId, _) in e.OldItems.AsNonNull())
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onUserStateRemoved(userId);
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foreach (var (userId, state) in e.NewItems.AsNonNull())
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onUserStateAdded(userId, state);
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break;
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}
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}
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private void onUserStateAdded(int userId, SpectatorState state)
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{
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if (state.RulesetID == null || state.BeatmapID == null)
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return;
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if (!userMap.ContainsKey(userId))
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return;
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Schedule(() => OnUserStateChanged(userId, state));
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updateGameplayState(userId);
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}
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private void onUserStateRemoved(int userId)
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{
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if (!userMap.ContainsKey(userId))
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return;
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if (!gameplayStates.TryGetValue(userId, out var gameplayState))
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return;
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gameplayState.Score.Replay.HasReceivedAllFrames = true;
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gameplayStates.Remove(userId);
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Schedule(() => EndGameplay(userId));
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}
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private void updateGameplayState(int userId)
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{
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Debug.Assert(userMap.ContainsKey(userId));
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var user = userMap[userId];
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var spectatorState = playingUserStates[userId];
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var resolvedRuleset = rulesets.AvailableRulesets.FirstOrDefault(r => r.ID == spectatorState.RulesetID)?.CreateInstance();
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if (resolvedRuleset == null)
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return;
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var resolvedBeatmap = beatmaps.QueryBeatmap(b => b.OnlineBeatmapID == spectatorState.BeatmapID);
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if (resolvedBeatmap == null)
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return;
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var score = new Score
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{
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ScoreInfo = new ScoreInfo
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{
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Beatmap = resolvedBeatmap,
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User = user,
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Mods = spectatorState.Mods.Select(m => m.ToMod(resolvedRuleset)).ToArray(),
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Ruleset = resolvedRuleset.RulesetInfo,
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},
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Replay = new Replay { HasReceivedAllFrames = false },
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};
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var gameplayState = new GameplayState(score, resolvedRuleset, beatmaps.GetWorkingBeatmap(resolvedBeatmap));
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gameplayStates[userId] = gameplayState;
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Schedule(() => StartGameplay(userId, gameplayState));
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}
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/// <summary>
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/// Invoked when a spectated user's state has changed.
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/// </summary>
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/// <param name="userId">The user whose state has changed.</param>
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/// <param name="spectatorState">The new state.</param>
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protected abstract void OnUserStateChanged(int userId, [NotNull] SpectatorState spectatorState);
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/// <summary>
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/// Starts gameplay for a user.
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/// </summary>
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/// <param name="userId">The user to start gameplay for.</param>
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/// <param name="gameplayState">The gameplay state.</param>
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protected abstract void StartGameplay(int userId, [NotNull] GameplayState gameplayState);
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/// <summary>
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/// Ends gameplay for a user.
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/// </summary>
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/// <param name="userId">The user to end gameplay for.</param>
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protected abstract void EndGameplay(int userId);
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/// <summary>
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/// Stops spectating a user.
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/// </summary>
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/// <param name="userId">The user to stop spectating.</param>
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protected void RemoveUser(int userId)
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{
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onUserStateRemoved(userId);
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userIds.Remove(userId);
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userMap.Remove(userId);
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spectatorClient.StopWatchingUser(userId);
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}
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protected override void Dispose(bool isDisposing)
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{
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base.Dispose(isDisposing);
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if (spectatorClient != null)
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{
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foreach (var (userId, _) in userMap)
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spectatorClient.StopWatchingUser(userId);
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}
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managerUpdated?.UnbindAll();
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}
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}
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}
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