(client) feat:实现掉落物，UI显示，维度

Client/Assets/Scripts/Entity/Inventory.cs

@@ -142,6 +142,25 @@ namespace Entity
         {
             return _slots.AsReadOnly();
         }
+        public InventorySlot GetSlot(Item.ItemResource itemResource)
+        {
+            if (itemResource == null) return null;
+
+            foreach (var slot in _slots)
+            {
+                if (slot.Item != null && slot.Item.DefName == itemResource.DefName)
+                {
+                    return slot;
+                }
+            }
+
+            return null;
+        }
+        public InventorySlot GetSlot(int i)
+        {
+            i = Mathf.Clamp(i, 0, Capacity - 1);
+            return _slots[i];
+        }
 
         public int OccupiedSlotsCount => _slots.Count;
         public int AvailableSlotsCount => Capacity - _slots.Count;