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78 行
1.7 KiB
78 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 Image[] _heartImages = default;
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[SerializeField] private Text healthText = 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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_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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setHeartImages();
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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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setHeartImages();
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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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setHeartImages();
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}
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void setHeartImages()
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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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healthText.text = currentHealth + "/" + maxHealth;
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//find max heart index
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int heartIndex = Mathf.CeilToInt( ((float)currentHealth / (float)maxHealth) * _heartImages.Length);
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for (int i = 0; i < _heartImages.Length; i++)
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{
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_heartImages[i].color = Color.red;
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if (_heartImages.Length > heartIndex)
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{
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_heartImages[i].gameObject.SetActive(i <= heartIndex);
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}
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}
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}
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}
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