add field functinallity

Assets/Scripts/FarmManager.cs

@@ -2,9 +2,40 @@ using UnityEngine;
 
 public class FarmManager : MonoBehaviour
 {
-  public Inventory<Crop> cropInventory;
+
+  // Singleton
+  public static FarmManager Instance { get; private set; }
+
+  [SerializeField]
+  private Inventory<Crop> cropInventory;
+
+  [SerializeField]
+  private Inventory<Harvest> harvestInventory;
+
+  public Inventory<Crop> CropInventory
+  {
+    get { return cropInventory; }
+  }
+
+  public Inventory<Harvest> HarvestInventory
+  {
+    get { return harvestInventory; }
+  }
+
+  private void Awake()
+  {
+    if (Instance == null)
+    {
+      Instance = this;
+    }
+    else
+    {
+      Destroy(gameObject);
+    }
+  }
   private void Start()
   {
     cropInventory = new Inventory<Crop>(2, 200);
+    harvestInventory = new Inventory<Harvest>(2, 200);
   }
 }