using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class ButtonScaleEffect : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    public float scaleTime = 0.2f; // 缩放所需的时间
    public float scale = 1.1f;
    private Vector3 originalScale; // 按钮的原始缩放值
    private Vector3 targetScale; // 目标缩放值
    private float currentTime; // 当前缩放时间
    private bool isScalingUp; // 是否正在放大

    private void Start()
    {
        // 记录按钮的原始缩放值
        originalScale = transform.localScale;
        targetScale = originalScale;
        currentTime = scaleTime;
    }

    private void Update()
    {
        if (currentTime < scaleTime)
        {
            currentTime += Time.deltaTime;
            // 使用Lerp方法实现平滑的缩放效果
            transform.localScale = Vector3.Lerp(
                isScalingUp ? originalScale : originalScale * scale,
                targetScale,
                currentTime / scaleTime
            );
        }
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        // 当按钮被按下时，设置目标缩放值为1.1倍，并开始计时
        targetScale = originalScale * scale;
        currentTime = 0f;
        isScalingUp = true;
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        // 当按钮被松开时，设置目标缩放值为原始值，并开始计时
        targetScale = originalScale;
        currentTime = 0f;
        isScalingUp = false;
    }
}