Add `World.FurnitureListChanged` event

Create a new event available to SMAPI mods to track furniture changes. To facilitate the event, a `FurnitureListChangedEventArgs` class is added as well.

Fixes #778

1 files changed, 4 insertions, 0 deletions

diff --git a/src/SMAPI/Framework/StateTracking/Snapshots/LocationSnapshot.cs b/src/SMAPI/Framework/StateTracking/Snapshots/LocationSnapshot.cs
index 6ae52fd0..6c9cc4f5 100644
--- a/src/SMAPI/Framework/StateTracking/Snapshots/LocationSnapshot.cs
+++ b/src/SMAPI/Framework/StateTracking/Snapshots/LocationSnapshot.cs
@@ -34,6 +34,9 @@ namespace StardewModdingAPI.Framework.StateTracking.Snapshots
         /// <summary>Tracks added or removed terrain features.</summary>
         public SnapshotListDiff<KeyValuePair<Vector2, TerrainFeature>> TerrainFeatures { get; } = new SnapshotListDiff<KeyValuePair<Vector2, TerrainFeature>>();
 
+        /// <summary>Tracks added or removed furniture.</summary>
+        public SnapshotListDiff<Furniture> Furniture { get; } = new SnapshotListDiff<Furniture>();
+
         /// <summary>Tracks changed chest inventories.</summary>
         public IDictionary<Chest, SnapshotItemListDiff> ChestItems { get; } = new Dictionary<Chest, SnapshotItemListDiff>();
 
@@ -59,6 +62,7 @@ namespace StardewModdingAPI.Framework.StateTracking.Snapshots
             this.Npcs.Update(watcher.NpcsWatcher);
             this.Objects.Update(watcher.ObjectsWatcher);
             this.TerrainFeatures.Update(watcher.TerrainFeaturesWatcher);
+            this.Furniture.Update(watcher.FurnitureWatcher);
 
             // chest inventories
             this.ChestItems.Clear();