Harvest points can now be depleted

Model/Entity/Parts/EntityHarvestModel.cs

@@ -11,4 +11,15 @@ public class EntityHarvestModel : IEntityPartInterface
     public float HarvestDelay { get; set; } = 1;
     public int TotalAmount { get; set; }
     public bool RequiresWorker { get; set; }
+
+    public float StartedAt { get; set; }
+
+    public bool IsDepleted(float interval)
+    {
+        var lifeTime = interval - StartedAt;
+
+        var totalHarvested = (lifeTime - 1) * HarvestedPerInterval;
+
+        return totalHarvested > TotalAmount;
+    }
 }