using UnityEngine;

public class HeadBobber : MonoBehaviour
{
    [Header("Settings")]
    public float bobSpeed = 14f;    // How fast the head bobs
    public float bobAmount = 0.05f; // How high/low the head goes

    [Tooltip("Reference to the parent player object")]
    public CharacterController playerController;

    private float defaultPosY = 0;
    private float timer = 0;

    void Start()
    {
        // Remember where the camera is supposed to be normally
        defaultPosY = transform.localPosition.y;
    }

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

        // Only bob if we are moving roughly walking speed
        // (magnitude > 0.1f) means we are moving
        if (Mathf.Abs(playerController.velocity.x) > 0.1f || Mathf.Abs(playerController.velocity.z) > 0.1f)
        {
            // Calculate the Sine Wave
            timer += Time.deltaTime * bobSpeed;
            float newY = defaultPosY + Mathf.Sin(timer) * bobAmount;

            // Apply it
            transform.localPosition = new Vector3(transform.localPosition.x, newY, transform.localPosition.z);
        }
        else
        {
            // Reset to neutral when stopped
            timer = 0;
            Vector3 targetPos = new Vector3(transform.localPosition.x, defaultPosY, transform.localPosition.z);
            transform.localPosition = Vector3.Lerp(transform.localPosition, targetPos, Time.deltaTime * 5f);
        }
    }
}