using UnityEngine;
using DG.Tweening;

public class HeatLineSegmentController : MonoBehaviour
{
    private LineRenderer lineRenderer;
    private Sequence sequence;

    public float duration = 4f; // 整个冷却淡出时间
    public Color hotColor = Color.red;
    public Color coldColor = Color.black;

    void Awake()
    {
        lineRenderer = GetComponent<LineRenderer>();
        if (lineRenderer == null)
        {
            Debug.LogError("HeatLineSegmentController需要LineRenderer组件");
        }
        lineRenderer.startColor = lineRenderer.endColor = hotColor;
    }

    void Start()
    {
        // 创建颜色渐变序列
        sequence = DOTween.Sequence();
        
        // 颜色从热色到冷色
        sequence.Append(DOTween.To(() => lineRenderer.startColor, x => {
            lineRenderer.startColor = x;
            lineRenderer.endColor = x;
        }, coldColor, duration * 0.7f).SetEase(Ease.InOutQuad));
        
        // 淡出效果
        sequence.Append(DOTween.To(() => lineRenderer.startColor.a, x => {
            Color c = lineRenderer.startColor;
            c.a = x;
            lineRenderer.startColor = c;
            lineRenderer.endColor = c;
        }, 0f, duration * 0.3f).SetEase(Ease.InQuad));
        
        // 完成后销毁对象
        sequence.OnComplete(() => Destroy(gameObject));
    }

    void OnDestroy()
    {
        // 清理DOTween序列
        sequence?.Kill();
    }
}