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 whiteColor = Color.white;    // 最热 - 白色
    public Color orangeColor = new Color(1f, 0.5f, 0f, 1f);  // 次热 - 橙色
    public Color redColor = Color.red;        // 较热 - 红色
    public Color coldColor = Color.black;     // 冷却 - 黑色

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

    void Start()
    {
        // 创建颜色渐变序列
        sequence = DOTween.Sequence();
        
        // 白色到橙色 (快速过渡)
        sequence.Append(DOTween.To(() => lineRenderer.startColor, x => {
            lineRenderer.startColor = x;
            lineRenderer.endColor = x;
        }, orangeColor, duration * 0.1f).SetEase(Ease.InOutQuad));
        
        // 橙色到红色
        sequence.Append(DOTween.To(() => lineRenderer.startColor, x => {
            lineRenderer.startColor = x;
            lineRenderer.endColor = x;
        }, redColor, duration * 0.3f).SetEase(Ease.InOutQuad));
        
        // 红色到黑色
        sequence.Append(DOTween.To(() => lineRenderer.startColor, x => {
            lineRenderer.startColor = x;
            lineRenderer.endColor = x;
        }, coldColor, duration * 0.3f).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();
    }
}