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

public class HealthBar : MonoBehaviour
{
    public Slider healthBarSlider;
    Damageable playerDamageable;
    //public string objectTag;
    public GameObject player;

    private void Awake()
    {
        GameObject player = this.player;

        playerDamageable = player.GetComponent<Damageable>();
    }

    // Start is called before the first frame update
    void Start()
    {
        healthBarSlider.value = CalculateSliderPercentage(playerDamageable.Health, playerDamageable.MaxHealth);
    }

    private void OnEnable()
    {
        playerDamageable.healthChanged.AddListener(OnPlayerHealthChanged);
    }

    private void OnDisable()
    {
        playerDamageable.healthChanged.RemoveListener(OnPlayerHealthChanged);
    }

    private float CalculateSliderPercentage(float currentHealth, float maxHealth)
    {
        return currentHealth / maxHealth;
    }

    private void OnPlayerHealthChanged(int newHealth, int newMaxHealth)
    {
        healthBarSlider.value = CalculateSliderPercentage(newHealth, newMaxHealth);
    }
}