gather-and-defend/Assets/Scripts/UnitTree/UpgradePlacementButton.cs

using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class UpgradePlacementButton : MonoBehaviour, IPointerClickHandler
{
    private Button _button;

    [SerializeField]
    private Material _outlineMaterial;
    [SerializeField]
    protected UnitCard _unitCardInformation;

    [SerializeField]
    private TMP_Text _foodLabel;
    [SerializeField]
    private TMP_Text _woodLabel;
    [SerializeField]
    private TMP_Text _rockLabel;
    [SerializeField]
    private GameObject _prefab;


    public Button Button => _button;
    public Material OutlineMaterial => _outlineMaterial;

    void Start()
    {
        _button = GetComponent<Button>();
        _button.enabled = true;
        Debug.Log("Upgrade instantiated...");
    }
    
    void Update()
    {
        //_button.interactable = CanUse();

        //SetTextFor(_foodLabel, _unitCardInformation.Food);
        //SetTextFor(_rockLabel, _unitCardInformation.Rock);
        //SetTextFor(_woodLabel, _unitCardInformation.Wood);
    }

    private bool CanUse()
    {
        return ResourceManager.Instance.EnoughFor(_unitCardInformation.Rock, _unitCardInformation.Wood, _unitCardInformation.Food);
    }

    void SetTextFor(TMP_Text label, int value)
    {
        label.transform.parent.gameObject.SetActive(value > 0);
        label.text = "" + value;
    }
    
    public void OnPointerClick(PointerEventData eventData)
    {
        //Change parent GameObject
        Debug.Log("Upgrade clicked...");

    }
}