CapersProject/Assets/02.Scripts/Ui/Combat/PlayerHealthPointUi.cs

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

namespace BlueWater.Uis
{
    public class PlayerHealthPointUi : MonoBehaviour
    {
        [SerializeField, Required]
        private Transform _healthPointLayout;
        
        [SerializeField, Required]
        private GameObject _healthPointPrefab;
        
        [SerializeField, Range(1, 10)]
        private int _maxHeartCount = 2;
        
        [SerializeField]
        private List<Image> _healthPointImageList = new();
        
        // 이미지 리소스
        [Title("이미지 리소스")]
        [SerializeField]
        private Sprite _fullHeart;
        
        [SerializeField]
        private Sprite _halfHeart;
        
        [SerializeField]
        private Sprite _emptyHeart;

        private void Awake()
        {
            InitializeHealthPoint();
        }

        private void Start()
        {
            EventManager.OnMaxHealthChanged += SetMaxHealthPoint;
            EventManager.OnHealthChanged += SetCurrentHealthPoint;
        }
        
        private void OnDestroy()
        {
            EventManager.OnMaxHealthChanged -= SetMaxHealthPoint;
            EventManager.OnHealthChanged -= SetCurrentHealthPoint;
        }

        [Button("컴포넌트 초기화")]
        private void InitializeComponents()
        {
            _healthPointLayout = transform.Find("HealthPointLayout");
        }

        private void InitializeHealthPoint()
        {
            foreach (Transform element in _healthPointLayout)
            {
                Destroy(element.gameObject);
            }
            
            _healthPointImageList = new List<Image>(_maxHeartCount);

            for (var i = 0; i < _maxHeartCount; i++)
            {
                var newHeart = Instantiate(_healthPointPrefab, _healthPointLayout).GetComponent<Image>();
                _healthPointImageList.Add(newHeart);
            }
        }

        public void SetMaxHealthPoint(int changedMaxHealthPoint)
        {
            _maxHeartCount = changedMaxHealthPoint;
            InitializeHealthPoint();
        }

        public void SetCurrentHealthPoint(int changedHealthPoint)
        {
            var fullHearts = changedHealthPoint / 2;
            var existHalfHeart = changedHealthPoint % 2 != 0;

            for (var i = 0; i < _healthPointImageList.Count; i++)
            {
                if (i < fullHearts)
                {
                    _healthPointImageList[i].sprite = _fullHeart;
                }
                else if (i == fullHearts && existHalfHeart)
                {
                    _healthPointImageList[i].sprite = _halfHeart;
                }
                else
                {
                    _healthPointImageList[i].sprite = _emptyHeart;
                }
            }
        }
    }
}