using UnityEngine;

public class CameraPlayerFollow : MonoBehaviour
{
    [SerializeField]
    private Transform _player;

    private Vector3 _cameraOffset;

    private Transform _obstruction;

    [SerializeField]
    [Range(0.01f, 1.0f)]
    private float _smoothFactor = 0.5f;
    // Start is called before the first frame update
    void Start()
    {
        _obstruction = null;
        _cameraOffset = transform.position - _player.position;
        // .LookAt(_player);
    }

    void LateUpdate()
    {
        Vector3 newPosition = _player.position + _cameraOffset;

        transform.position = Vector3.Slerp(transform.position, newPosition, _smoothFactor);
        ViewObstructed();
    }

    private void ViewObstructed()
    {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, _player.position - transform.position, out hit, 3.5f))
        {
            if (hit.collider.gameObject.tag != "Player")
            {
                _obstruction = hit.transform;
                _obstruction.gameObject.GetComponent<MeshRenderer>().shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.ShadowsOnly;
            }
        }
        else if (_obstruction != null)
        {
            _obstruction.gameObject.GetComponent<MeshRenderer>().shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.On;
            _obstruction = null;
        }
    }
}