using UnityEngine;

/// <summary>
/// Makes this object follow a target (bottleTransform) horizontally, optionally using a wobble offset for vertical movement.
/// </summary>
public class RockFollower : MonoBehaviour
{
    [Header("References")]
    public Transform bottleTransform;
    public WobbleBehavior bottleWobble;

    [Header("Movement Settings")]
    public float followStiffness = 4f;
    /// <summary>
    /// Whether to use the wobble offset for vertical movement.
    /// </summary>
    public bool useWobbleOffset = true;
    /// <summary>
    /// The base Y position for the rock.
    /// </summary>
    public float baseY = -6f;

    private float velocityX; // For SmoothDamp

    void Update()
    {
        if (bottleTransform == null) return;

        // Target horizontal position is bottle's X
        float targetX = bottleTransform.position.x;
        float currentX = transform.position.x;

        // Smoothly follow bottle's X with stiffer motion
        float newX = Mathf.SmoothDamp(currentX, targetX, ref velocityX, 1f / followStiffness);

        // Calculate Y position
        float newY = baseY;
        if (useWobbleOffset && bottleWobble != null)
        {
            newY += bottleWobble.VerticalOffset;
        }

        // Set new position (only X and Y, keep Z)
        transform.position = new Vector3(newX, newY, transform.position.z);
    }
}