| | | 1 | | using System; |
| | | 2 | | using UnityEngine; |
| | | 3 | | using UnityEngine.Assertions; |
| | | 4 | | |
| | | 5 | | namespace DCL |
| | | 6 | | { |
| | | 7 | | /// <summary> |
| | | 8 | | /// This class wraps around the DataStore's DataStore_WorldObjects instance. |
| | | 9 | | /// |
| | | 10 | | /// The DataStore_WorldObjects scene data objects must be removed aggressively when the |
| | | 11 | | /// DataStore_WorldObjects.SceneData is empty, right after the last object is removed. |
| | | 12 | | /// |
| | | 13 | | /// The DataStore_WorldObjects.SceneData objects can't be removed just when the scene is |
| | | 14 | | /// unloaded because the underlying assets are removed lazily (i.e. by ParcelScenesCleaner). |
| | | 15 | | /// |
| | | 16 | | /// This helper ensures that any events persist even in the case of the scene being removed and then |
| | | 17 | | /// added due to the last object being removed and then added again. |
| | | 18 | | /// </summary> |
| | | 19 | | public class WorldSceneObjectsTrackingHelper : IDisposable |
| | | 20 | | { |
| | 1 | 21 | | private static bool VERBOSE = false; |
| | 1 | 22 | | private static ILogger logger = new Logger(Debug.unityLogger.logHandler) { filterLogType = VERBOSE ? LogType.Log |
| | | 23 | | |
| | 0 | 24 | | public DataStore_WorldObjects.SceneData sceneData { get; private set; } |
| | | 25 | | public event Action<Rendereable> OnWillAddRendereable; |
| | | 26 | | public event Action<Rendereable> OnWillRemoveRendereable; |
| | | 27 | | |
| | | 28 | | private string sceneId; |
| | | 29 | | private DataStore dataStore; |
| | | 30 | | |
| | 473 | 31 | | public WorldSceneObjectsTrackingHelper (DataStore dataStore, string sceneId) |
| | | 32 | | { |
| | 473 | 33 | | logger.Log("A wild WorldSceneObjectsTrackingHelper appears!"); |
| | 473 | 34 | | this.dataStore = dataStore; |
| | 473 | 35 | | this.sceneId = sceneId; |
| | | 36 | | |
| | 473 | 37 | | if (dataStore.sceneWorldObjects.sceneData.ContainsKey(sceneId)) |
| | 0 | 38 | | SetSceneData(dataStore.sceneWorldObjects.sceneData[sceneId]); |
| | | 39 | | |
| | 473 | 40 | | dataStore.sceneWorldObjects.sceneData.OnAdded += OnSceneAdded; |
| | 473 | 41 | | dataStore.sceneWorldObjects.sceneData.OnRemoved += OnSceneRemoved; |
| | 473 | 42 | | } |
| | | 43 | | |
| | | 44 | | private void OnSceneRemoved(string sceneId, DataStore_WorldObjects.SceneData arg2) |
| | | 45 | | { |
| | 173 | 46 | | if ( sceneId != this.sceneId ) |
| | 0 | 47 | | return; |
| | | 48 | | |
| | | 49 | | // Set dummy scene data so null reference exceptions are avoided. |
| | 173 | 50 | | logger.Log($"Scene {sceneId} was removed! Using dummy scene data."); |
| | 173 | 51 | | SetSceneData( new DataStore_WorldObjects.SceneData() ); |
| | 173 | 52 | | } |
| | | 53 | | |
| | | 54 | | private void OnSceneAdded(string sceneId, DataStore_WorldObjects.SceneData sceneData) |
| | | 55 | | { |
| | 216 | 56 | | if ( sceneId != this.sceneId ) |
| | 0 | 57 | | return; |
| | | 58 | | |
| | 216 | 59 | | logger.Log($"Scene {sceneId} was added!"); |
| | 216 | 60 | | SetSceneData( sceneData ); |
| | 216 | 61 | | } |
| | | 62 | | |
| | | 63 | | private void SetSceneData(DataStore_WorldObjects.SceneData sceneData) |
| | | 64 | | { |
| | 389 | 65 | | Assert.IsNotNull(sceneData, "sceneData should never be null!"); |
| | | 66 | | |
| | 389 | 67 | | if ( sceneData == this.sceneData ) |
| | 0 | 68 | | return; |
| | | 69 | | |
| | 389 | 70 | | if ( this.sceneData != null ) |
| | | 71 | | { |
| | | 72 | | // This should never happen because of how the flow works. |
| | | 73 | | // |
| | | 74 | | // Scenes with the same sceneId shouldn't ever be added twice, and if this happens |
| | | 75 | | // we have an early exit. |
| | 230 | 76 | | this.sceneData.renderedObjects.OnAdded -= OnRenderedObjectsAdded; |
| | 230 | 77 | | this.sceneData.renderedObjects.OnRemoved -= OnRenderedObjectsRemoved; |
| | | 78 | | } |
| | | 79 | | |
| | 389 | 80 | | logger.Log($"Subscribing events for {sceneId}."); |
| | 389 | 81 | | sceneData.renderedObjects.OnAdded += OnRenderedObjectsAdded; |
| | 389 | 82 | | sceneData.renderedObjects.OnRemoved += OnRenderedObjectsRemoved; |
| | | 83 | | |
| | 389 | 84 | | this.sceneData = sceneData; |
| | 389 | 85 | | } |
| | | 86 | | |
| | | 87 | | private void OnRenderedObjectsRemoved(Rendereable rendereable) |
| | | 88 | | { |
| | 237 | 89 | | logger.Log($"Removing rendereable."); |
| | 237 | 90 | | OnWillRemoveRendereable?.Invoke(rendereable); |
| | 102 | 91 | | } |
| | | 92 | | |
| | | 93 | | private void OnRenderedObjectsAdded(Rendereable rendereable) |
| | | 94 | | { |
| | 283 | 95 | | logger.Log($"Adding rendereable."); |
| | 283 | 96 | | OnWillAddRendereable?.Invoke(rendereable); |
| | 283 | 97 | | } |
| | | 98 | | |
| | | 99 | | public void Dispose() |
| | | 100 | | { |
| | 473 | 101 | | if ( sceneData == null ) |
| | 314 | 102 | | return; |
| | | 103 | | |
| | 159 | 104 | | sceneData.renderedObjects.OnAdded -= OnRenderedObjectsAdded; |
| | 159 | 105 | | sceneData.renderedObjects.OnRemoved -= OnRenderedObjectsRemoved; |
| | | 106 | | |
| | 159 | 107 | | dataStore.sceneWorldObjects.sceneData.OnAdded -= OnSceneAdded; |
| | 159 | 108 | | dataStore.sceneWorldObjects.sceneData.OnRemoved -= OnSceneRemoved; |
| | 159 | 109 | | logger.Log($"Disposing."); |
| | 159 | 110 | | } |
| | | 111 | | } |
| | | 112 | | } |