using System.Collections;
using UnityEngine;
namespace WildAttack
{
    /// <summary>
    /// 箭
    /// </summary>
    public class Arrow : MonoBehaviour
    {
        #region Members
        /// <summary>
        /// 重力参数
        /// </summary>
        float gravity;

        /// <summary>
        /// 箭射出去时的向量
        /// </summary>
        private Vector3 moveSpeed;
        private Vector3 gritySpeed;
        /// <summary>
        /// 飞行时间
        /// </summary>
        private float dTime;

        private Vector3 currentAngle;
        private AudioSource audioSource;
        #endregion

        #region Lifecycle
        private void FixedUpdate()
        {
            if (isStop) return;
            //计算物体的重力速度
            //v = at ;
            gritySpeed.y = gravity * (dTime += Time.fixedDeltaTime);
            //位移模拟轨迹
            transform.position += (moveSpeed + gritySpeed) * Time.fixedDeltaTime;

            currentAngle.x = Mathf.Abs(Mathf.Atan(gritySpeed.y / moveSpeed.z) * Mathf.Rad2Deg);
            if (transform.localEulerAngles.y > 260 && transform.localEulerAngles.y < 290)
            {
                currentAngle.x /= 3;
            }
            transform.eulerAngles = new Vector3(transform.localEulerAngles.x + currentAngle.x * Time.fixedDeltaTime, transform.localEulerAngles.y, transform.eulerAngles.z);
        }

        private bool isStop = false;
        /// <summary>
        /// 箭的触发检测
        /// </summary>
        /// <param name="other"></param>
        private void OnTriggerEnter(Collider other)
        {
            StopAllCoroutines();
            if (other.gameObject.layer == LayerMask.NameToLayer("Plane"))
            {
                isStop = true;
                SetTrailActive(false);
                transform.GetComponent<CapsuleCollider>().enabled = false;
                ProcessManager.GetInstance().AddStayArrow(gameObject);
                transform.GetChild(0).GetComponent<MeshRenderer>().materials[0].SetColor("_Color", new Color(175f / 255f, 175f / 255f, 175f / 255f, 1f));
                transform.GetChild(0).GetComponent<MeshRenderer>().materials[1].SetColor("_Color", new Color(175f / 255f, 175f / 255f, 175f / 255f, 1f));
                transform.localScale = new Vector3(5, 5, 3);
                transform.Rotate(new Vector3(10, 0, 0));
            }
            else
            {
                Destroy(gameObject);
            }
            // 根据层级判断目标类型
            if (other.gameObject.layer == LayerMask.NameToLayer("Enemy"))
            {
                // 击中部位判定
                other.GetComponentInParent<Enemy>().Hitted(1, other.GetType() == typeof(SphereCollider));
            }
            else if (other.gameObject.layer == LayerMask.NameToLayer("StageProperty") || other.gameObject.layer == LayerMask.NameToLayer("Barrel"))
            {
                // 道具触发
                other.GetComponent<StageProperty>().PropTrigger();
            }
        }
        #endregion

        #region Functions

        /// <summary>
        /// 初始化 射箭的时候调用
        /// </summary>
        /// <param name="rot"></param>
        /// <param name="speed"></param>
        public void Init(Vector3 rot, float speed)
        {
            //this.speed = speed;
            transform.eulerAngles = rot;
            audioSource = GetComponent<AudioSource>();
            StartCoroutine(DestroySelf());
            audioSource.clip = Resources.Load<AudioClip>("Voice/Arrow/Shoot");
            if (UserSettings.ins.openEffect) audioSource.Play();
            moveSpeed = Quaternion.Euler(new Vector3(transform.rotation.x, transform.rotation.y, 0)) * transform.forward * speed;
            currentAngle = transform.eulerAngles;
            gravity = -GameModule.GetInstance().GetData("g");
            SetTrailActive(true);
        }
        private void SetTrailActive(bool active)
        {
            transform.Find("Trail1").gameObject.SetActive(active);
            transform.Find("Trail2").gameObject.SetActive(active);
        }

        /// <summary>
        /// 3秒自然销毁
        /// </summary>
        /// <returns></returns>
        IEnumerator DestroySelf()
        {
            yield return new WaitForSeconds(3f);
            Destroy(gameObject);
        }
        #endregion
    }
}