gather-and-defend/Assets/Scripts/ResourceRemover.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;

public class ResourceRemover : MonoBehaviour
{

    [SerializeField] 
    private int _rock;

    [SerializeField] 
    private int _wood;

    [SerializeField] 
    private int _food;

    [SerializeField]
    private Button _button;
    
    [SerializeField]
    private TextField _text;

    private ResourceManager _resourceManager;

    // Start is called before the first frame update
    void Start()
    {
        _resourceManager = ResourceManager.getInstance();

        _button.clicked += () =>
        {
            //Will remove resources as well as execute placement action defined in the Editors
            _resourceManager.Remove(_rock, _wood, _food);
        };

    }

    // Update is called once per frame
    void Update()
    {
        ChangeAvailability();
    }

    private void ChangeAvailability()
    {
        //checks if player has enough resources then chooses state of button's availability

        StyleColor textColor = _text.style.color;
        if (_resourceManager.EnoughFor(_rock, _wood, _food) && textColor == Color.red)
        {
            textColor = Color.green;
        }
        else if (textColor == Color.green)
        {
            textColor = Color.red;
        }
    }

    
}