using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class skillWarn_prefab : MonoBehaviour
{
    [Header("Skill Warning")]
    public Image warn_btm_img;
    public Text warn_txt;
    [Header("color sprite")]
    public Sprite warn_btm_red;
    public Sprite warn_btm_yellow;
    public Sprite warn_btm_green;
    public Sprite warn_btm_blue;

    [Header("Fade Settings")]
    public float waitDuration = 2.0f; // 等待几秒开始渐隐
    public float fadeDuration = 1.0f; // 渐隐持续时间

    private void Start()
    {
        StartCoroutine(FadeRoutine());
    }

    private IEnumerator FadeRoutine()
    {
        // Wait before fading
        yield return new WaitForSeconds(waitDuration);

        float elapsedTime = 0f;
        Color originalImgColor = warn_btm_img != null ? warn_btm_img.color : Color.white;
        Color originalTxtColor = warn_txt != null ? warn_txt.color : Color.white;

        while (elapsedTime < fadeDuration)
        {
            elapsedTime += Time.deltaTime;
            float alpha = Mathf.Clamp01(1f - (elapsedTime / fadeDuration));

            if (warn_btm_img != null)
            {
                Color newColor = originalImgColor;
                newColor.a = originalImgColor.a * alpha;
                warn_btm_img.color = newColor;
            }

            if (warn_txt != null)
            {
                Color newColor = originalTxtColor;
                newColor.a = originalTxtColor.a * alpha;
                warn_txt.color = newColor;
            }

            yield return null;
        }

        Destroy(gameObject);
    }
}