Generic/Assets/Scripts/UIController.cs

using UnityEngine;
using TMPro;

public class UIController : MonoBehaviour
{

    public static UIController instance;

    public void Awake()
    {
        instance = this;
    }

    public TMP_Text playerManaTxt, playerHealthTxt, enemyHealthTxt;

    public GameObject manaWarning;
    public float manaWarningTime;

    public GameObject drawCardBtn, endTurnBtn;

    public UIDamageIndicator playerDamage, enemyDamage;

    private float manaWarningCounter;

    // 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()
    {
     if(manaWarningCounter > 0)
        {
            manaWarningCounter -= Time.deltaTime;

            if(manaWarningCounter <= 0)
            {
                manaWarning.SetActive(false);
            }
        }
    }

    public void SetPlayerManaText(int manaAmount)
    {
        playerManaTxt.text = "Mana: " + manaAmount;
    }

    public void SetPlayerHealthText(int healthAmount)
    {
        playerHealthTxt.text = "Player Health: " + healthAmount;
    }

    public void SetEnemyHealthText(int healthAmount)
    {
        enemyHealthTxt.text = "Enemy Health: " + healthAmount;
    }

    public void ShowManaWarning()
    {
        manaWarning.SetActive(true);
        manaWarningCounter = manaWarningTime;
    }

    public void DrawCard()
    {
        DeckController.instance.DrawCardForMana();
    }

    public void EndPlayerTurn()
    {
        BattleController.instance.EndPlayerTurn();
    }
}