using UnityEngine;
using UnityEngine.EventSystems;
using System.Collections;

public class ButtonAnimasi : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    public float bounceScale = 1.15f;
    public float duration = 0.3f;

    private Vector3 originalScale;
    private bool isBouncing = false;

    void Start()
    {
        originalScale = transform.localScale;
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        if (!isBouncing)
            StartCoroutine(Bounce());
    }

    public void OnPointerUp(PointerEventData eventData) { }

    IEnumerator Bounce()
    {
        isBouncing = true;

        // Membesar smooth
        float elapsed = 0f;
        while (elapsed < duration / 2)
        {
            elapsed += Time.deltaTime;
            float t = Mathf.SmoothStep(0f, 1f, elapsed / (duration / 2));
            transform.localScale = Vector3.Lerp(originalScale, originalScale * bounceScale, t);
            yield return null;
        }

        // Kembali smooth
        elapsed = 0f;
        while (elapsed < duration / 2)
        {
            elapsed += Time.deltaTime;
            float t = Mathf.SmoothStep(0f, 1f, elapsed / (duration / 2));
            transform.localScale = Vector3.Lerp(originalScale * bounceScale, originalScale, t);
            yield return null;
        }

        transform.localScale = originalScale;
        isBouncing = false;
    }
}