Assets/Scripts/ResourceHealthBar.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class ResourceHealthBar : MonoBehaviour
{
    private Slider slider;
    private float currentHealth, maxHealth;

    public GameObject globalState;

    void Awake()
    {
        slider = GetComponent<Slider>();
        
    }

    private void Update() {
        currentHealth = globalState.GetComponent<GlobalState>().resourceHealth;
        maxHealth = globalState.GetComponent<GlobalState>().resourceMaxHealth;

        float fillValue = currentHealth/maxHealth;
        slider.value = fillValue;
        // healthCounter.text = currentHealth+"/"+maxHealth;
        
    }
    
}