using UnityEngine;

namespace Unheimlich.Features.Dialogue.UI
{
    /// <summary>
    /// Makes UI element always face the main camera.
    /// Commonly used for world-space UI elements like floating words.
    /// </summary>
    public class BillboardUI : MonoBehaviour
{
    private Transform _cameraTransform;

    private void Awake()
    {
        _cameraTransform = Camera.main != null ? Camera.main.transform : null;
        
        if (_cameraTransform == null)
            Debug.LogWarning($"BillboardUI on {gameObject.name}: Main camera not found!");
    }

    private void Start() { }

    private void LateUpdate()
    {
        if (_cameraTransform != null)
        {
            transform.LookAt(transform.position + _cameraTransform.rotation * Vector3.forward,
                             _cameraTransform.rotation * Vector3.up);
        }
    }
}
}