Fix up item usage

Zennysoft.Game.Ma/src/items/dropped/DroppedItem.cs

@@ -2,6 +2,7 @@
 using Chickensoft.GodotNodeInterfaces;
 using Chickensoft.Introspection;
 using Godot;
+using Zennysoft.Game.Abstractions;
 
 namespace Zennysoft.Game.Ma;
 
@@ -23,12 +24,12 @@ public partial class DroppedItem : RigidBody3D, IDroppedItem
 
   [Node] private Area3D Pickup { get; set; } = default!;
 
-  public InventoryItem Item { get; set; }
+  public IInventoryItem Item { get; set; }
 
   public void OnResolved()
   {
     ContactMonitor = true;
-    Sprite.Texture = Item.ItemStats.Texture;
+    Sprite.Texture = ((InventoryItem)Item).ItemStats.Texture;
   }
 
   public async void Drop()