UIManager.cs

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

public class UIManager : MonoBehaviour {

	public Image[] lifeHearts;
	public Text coinText;
	public GameObject gameOverPanel;
	public Text scoreText;

	public void UpdateLives(int lives)
	{
		for (int i = 0; i < lifeHearts.Length; i++)
		{
			if(lives > i)
			{
				lifeHearts[i].color = Color.white;
			}
			else
			{
				lifeHearts[i].color = Color.black;
			}
		}
	}

	public void UpdateCoins(int coin)
	{
		coinText.text = coin.ToString();
	}

	public void UpdateScore(int score)
	{
		scoreText.text = "Score: " + score + "m";
	}

}