add asset propagation for interior door sprites

docs/release-notes.md

@@ -12,6 +12,7 @@
   * Aggressive memory optimization (added in 3.9.2) is now disabled by default. The option reduces errors for a subset of players who use certain mods, but may cause crashes for farmhands in multiplayer. You can edit `smapi-internal/config.json` to enable it if you experience frequent `OutOfMemoryException` errors.
 
 * For mod authors:
+  * Added asset propagation for interior door sprites.
   * Fixed assets changed by a mod not reapplied if playing in non-English, the changes are only applicable after the save is loaded, the player returns to title and reloads a save, and the game reloads the target asset before the save is loaded.
 
 ## 3.9.4

src/SMAPI/Metadata/CoreAssetPropagator.cs

@@ -366,6 +366,8 @@ namespace StardewModdingAPI.Metadata
                         foreach (ClickableTextureComponent button in new[] { menu.questButton, menu.zoomInButton, menu.zoomOutButton })
                             button.texture = Game1.mouseCursors;
                     }
+
+                    this.ReloadDoorSprites(content, key);
                     return true;
 
                 case "loosesprites\\cursors2": // Game1.LoadContent
@@ -739,6 +741,36 @@ namespace StardewModdingAPI.Metadata
             return critters.Length;
         }
 
+        /// <summary>Reload the sprites for interior doors.</summary>
+        /// <param name="content">The content manager through which to reload the asset.</param>
+        /// <param name="key">The asset key to reload.</param>
+        /// <returns>Returns whether any doors were affected.</returns>
+        private bool ReloadDoorSprites(LocalizedContentManager content, string key)
+        {
+            Lazy<Texture2D> texture = new Lazy<Texture2D>(() => content.Load<Texture2D>(key));
+
+            foreach (GameLocation location in this.GetLocations())
+            {
+                IEnumerable<InteriorDoor> doors = location.interiorDoors?.Doors;
+                if (doors == null)
+                    continue;
+
+                foreach (InteriorDoor door in doors)
+                {
+                    if (door?.Sprite == null)
+                        continue;
+
+                    string textureName = this.NormalizeAssetNameIgnoringEmpty(this.Reflection.GetField<string>(door.Sprite, "textureName").GetValue());
+                    if (textureName != key)
+                        continue;
+
+                    door.Sprite.texture = texture.Value;
+                }
+            }
+
+            return texture.IsValueCreated;
+        }
+
         /// <summary>Reload the data for matching farm animals.</summary>
         /// <returns>Returns whether any farm animals were affected.</returns>
         /// <remarks>Derived from the <see cref="FarmAnimal"/> constructor.</remarks>