using UnityEngine;

public class CardVisual : MonoBehaviour
{
    [Header("Target to Follow")]
    public Transform targetTransform; // Drag your invisible target object here

    [Header("Movement Speeds")]
    [SerializeField] private float moveSpeed = 12f;
    [SerializeField] private float rotationSpeed = 10f;

    [Header("Juice & Tilt Settings")]
    [SerializeField] private float tiltAmount = 0.15f;
    [SerializeField] private float maxTilt = 15f;

    private Vector3 lastPosition;
    private Vector3 currentVelocity;

    private void Start()
    {
        if (targetTransform != null)
        {
            transform.position = targetTransform.position;
            lastPosition = transform.position;
        }
    }

    private void Update()
    {
        if (targetTransform == null) return;

        // 1. Calculate how fast the visual is moving across the screen
        Vector3 targetPos = targetTransform.position;
        currentVelocity = (targetPos - lastPosition) / Time.deltaTime;
        lastPosition = transform.position;

        // 2. Smoothly move (Lerp) towards the target position
        transform.position = Vector3.Lerp(transform.position, targetPos, Time.deltaTime * moveSpeed);

        // 3. Tilt the card based on sideways movement speed
        float zTilt = Mathf.Clamp(-currentVelocity.x * tiltAmount, -maxTilt, maxTilt);
        Quaternion targetRotation = targetTransform.rotation * Quaternion.Euler(0, 0, zTilt);

        // 4. Smoothly rotate towards the target tilt angle
        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, Time.deltaTime * rotationSpeed);
    }
}