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82 行
1.7 KiB
82 行
1.7 KiB
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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public class UIHealthBarManager : MonoBehaviour
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{
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Transform target;
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int maxHealth=0;
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int currentHealth=0;
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[SerializeField] private Slider _healthBar = default;
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[Header("Listening to")]
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[SerializeField] private IntEventChannelSO _setHealthBar = default;
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[SerializeField] private IntEventChannelSO _inflictDamage = default;
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[SerializeField] private IntEventChannelSO _restoreHealth = default;
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private void OnEnable()
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{
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if((GetComponent<Canvas>()!=null)&&(Camera.main!=null))
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{
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GetComponent<Canvas>().worldCamera = Camera.main;
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target = Camera.main.transform;
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}
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}
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private void Start()
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{
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_setHealthBar.OnEventRaised += SetHealthBar;
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_inflictDamage.OnEventRaised += InflictDamage;
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_restoreHealth.OnEventRaised += RestoreHealth;
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}
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private void OnDestroy()
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{
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_setHealthBar.OnEventRaised -= SetHealthBar;
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_inflictDamage.OnEventRaised -= InflictDamage;
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_restoreHealth.OnEventRaised -= RestoreHealth;
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}
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public void SetHealthBar(int _maxHealth)
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{
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maxHealth = _maxHealth;
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currentHealth = _maxHealth;
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setSlider();
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}
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public void InflictDamage(int _damage)
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{
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currentHealth -= _damage;
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setSlider();
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}
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public void RestoreHealth(int _healthToAdd)
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{
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currentHealth += _healthToAdd;
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setSlider();
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}
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void setSlider()
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{
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//clamp current value
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currentHealth = Mathf.Clamp(currentHealth, 0, maxHealth);
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//find new slider value
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float sliderValue = 0;
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sliderValue = currentHealth / maxHealth;
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_healthBar.value = sliderValue;
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}
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private void Update()
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{
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if (target != null)
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transform.LookAt(target, Vector3.down);
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}
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}
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