Onto lesson 2

Assets/Scripts/ResourceSourceUI.cs

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+using UnityEngine;
+using TMPro;
+
+public class ResourceSourceUI : MonoBehaviour
+{
+    public GameObject popupPanel;
+    public TextMeshProUGUI resourceQuantityText;
+    public ResourceSource resource;
+    // Start is called once before the first execution of Update after the MonoBehaviour is created
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+    void OnMouseEnter()
+    {
+        popupPanel.SetActive(true);
+    }
+    void OnMouseExit()
+    {
+        popupPanel.SetActive(false);
+    }
+    public void OnResourceQuantityChange()
+    {
+        resourceQuantityText.text = resource.quantity.ToString();
+    }
+}