Building shop functional and Building states are saved online

Assets/Game/Scripts/ShopBuildingButton.cs

@@ -0,0 +1,40 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using TMPro;
+
+public class ShopBuildingButton : MonoBehaviour
+{
+    public BuildingData buildingData;
+    public Button btn;
+    public TMP_Text txt;
+    void Start()
+    {
+        DBmanager.OnStateChanged.AddListener(refresh);
+        refresh();
+        btn.onClick.AddListener(OnClick);
+    }
+
+    void OnClick(){
+        btn.interactable=false;
+    }
+
+    void OnValidate(){
+        if(btn==null){btn = GetComponent<Button>();}
+        if(txt==null){txt=GetComponentInChildren<TMP_Text>();}
+    }
+
+    public void refresh(){
+        bool exists = false;
+        foreach (BuildingState buildingState in DBmanager.buildingStates){
+            if(buildingState.id == buildingData.buildingName){
+                exists=true;
+                break;
+            }
+        }
+        gameObject.SetActive(!exists);
+        btn.interactable = (DBmanager.Coins > buildingData.levels[0].price);
+        txt.text = buildingData.levels[0].price.ToString();
+    }
+}