using UnityEngine;

/// <summary>
/// 火车
/// </summary>
public class Train : MonoBehaviour
{
    /// <summary>
    /// 火车对象
    /// </summary>
    public GameObject trainObj;

    /// <summary>
    /// 左点
    /// </summary>
    public Transform leftPoint;

    /// <summary>
    /// 右点
    /// </summary>
    public Transform rightPoint;

    /// <summary>
    /// 方向
    /// </summary>
    private E_DirectionType e_DirectionType;

    /// <summary>
    /// 刚体
    /// </summary>
    public Rigidbody rb;

    /// <summary>
    /// 是否死亡
    /// </summary>
    private bool isDie;

    /// <summary>
    /// 是否预警
    /// </summary>
    private bool isEarlyWarning;

    private void OnEnable()
    {
        isEarlyWarning = false;
        isDie = false;
        rb.useGravity = false;
        rb.isKinematic = true;
    }

    private void OnDisable()
    {
        rb.velocity = Vector3.zero;
    }

    private void Update()
    {
        if (Vector3.Distance(Scenes.Instance.player.transform.position, this.transform.position) < 120&& !isDie)
        {
            if (!isEarlyWarning)
            {
                AudioManager.Instance.PlaySound(YooAssetManager.Instance.LoadAssetSync<AudioClip>(PackagesName.GameData, "TrainPass"));
                UIManager.Instance.GetUI<GameUI>().SetEarlyWarning(e_DirectionType);
                isEarlyWarning = true;
            }
            trainObj.transform.Translate(trainObj.transform.forward * Scenes.Instance.gameScene.trainMoveSpeed * Time.deltaTime, Space.World);
        }
    }

    /// <summary>
    /// 击飞
    /// </summary>
    public void ShootFly(Transform transform)
    {
        if (isDie) return;
        isDie = true;
        rb.useGravity = true;
        rb.isKinematic = false;
        rb.AddForce((transform.position - this.transform.position).normalized * -100, ForceMode.Impulse);
        rb.AddForce(Vector3.up * 20, ForceMode.Impulse);
        rb.AddTorque(new Vector3(Random.Range(-180, 180), Random.Range(-180, 180), Random.Range(-180, 180)), ForceMode.Impulse);
    }

    /// <summary>
    /// 设置方向
    /// </summary>
    public void SetDirection(E_DirectionType e_DirectionType)
    {
        this.e_DirectionType = e_DirectionType;
        switch (e_DirectionType)
        {
            case E_DirectionType.Left:
                trainObj.transform.position = leftPoint.position;
                trainObj.transform.localEulerAngles = new Vector3(0, 180, 0);
                break;
            case E_DirectionType.Right:
                trainObj.transform.position = rightPoint.position;
                trainObj.transform.localEulerAngles = new Vector3(0, 0, 0);
                break;
        }
    }
}