using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using SmartBowSDK;
using System;
using UnityEngine.UI;

public class ShootingEvent : MonoBehaviour
{
    private SmartBowHelper smartBowHelper;
    /// <summary>
    /// 瞄准器，基于其位置发射射线，射线的hitpoint转屏幕坐标，该坐标即准心坐标
    /// </summary>
    public Transform aimTransform;
    /// <summary>
    /// 是否限制瞄准器在屏幕范围内
    /// </summary>
    public bool limitAimInScrren;

    private RectTransform _rectTransform;
    private RectTransform _canvasRectTransform;

    bool shooting = false;
    void Awake()
    {
        _rectTransform = GetComponent<RectTransform>();
        _canvasRectTransform = GetComponentInParent<Canvas>().GetComponent<RectTransform>();
    }

    void Start()
    {
        //#if UNITY_ANDROID
        //        //smartBowHelper = new SmartBowHelper();
        //        //SmartBowHelper.GetInstance().StartShootingSensor();
        //        //SmartBowHelper.GetInstance().StartMagCalibration();
        //        //SmartBowHelper.GetInstance().OnFunctionKeyPress += OnFunctionKeyPress;
        //        //SmartBowHelper.GetInstance().OnRotationUpdate += OnRotationUpdate;
        //        //SmartBowHelper.GetInstance().OnFunctionKeyLongPress += OnFunctionKeyLongPress;
        //        //SmartBowHelper.GetInstance().OnShooting += OnShooting;
        //#endif
        //        InitForLimitBound();
    }

    void LateUpdate()
    {
#if UNITY_ANDROID
        //if (limitAimInScrren) aimTransform.eulerAngles = LimitAngles(aimTransform.eulerAngles);
        //UpdateCrossHairPosition();
#else
        Vector3 pos = new Vector3(Input.mousePosition.x - Screen.width * 0.5f, Input.mousePosition.y - Screen.height * 0.5f, 0);
        _rectTransform.localPosition = pos;
#endif
    }

    private Vector2 _point;

    public void OnPositionUpdate(Vector2 point)
    {
        _point = point;

        //Debug.LogWarning($"OnPositionUpdate  point={point}");
        var viewPoint = Camera.main.ScreenToViewportPoint(point);
        var width = _canvasRectTransform.sizeDelta.x;
        var height = _canvasRectTransform.sizeDelta.y;
        point.x = width * viewPoint.x;
        point.y = height * viewPoint.y;
        var uiPos = new Vector3(point.x - width * 0.5f, point.y - height * 0.5f, -275f);        

        //Debug.LogWarning($"uiPos={uiPos}");
        _rectTransform.localPosition = uiPos;//准心UI位置
    }

    //射箭的监听
    public void OnShooting()
    {
        shooting = true;
        var worldPoint = Camera.main.ScreenToWorldPoint(_point);
        //var rayGo = new GameObject("Ray");
        //rayGo.transform.position = worldPoint;
        //var ray = Camera.main.ScreenPointToRay(_point);

        UpdateCrossHairPosition();
    }

    /// <summary>
    /// 判断是否打中UI按钮
    /// </summary>
    /// <returns></returns>
    public bool ShootUIBtn()
    {
        var ray = new Ray(transform.position, transform.forward);
        RaycastHit hitInfo;
        if (Physics.Raycast(ray, out hitInfo))
        {
            var go = hitInfo.transform.gameObject;
            if (go.GetComponent<Button>())
            {
                if (go.name == "BtnRestart")
                    GeneratingTarget.gm.OnRestart();
                else if (go.name == "BtnNext")
                    GeneratingTarget.gm.OnBtnNext();
                else if (go.name == "BtnLast")
                    GeneratingTarget.gm.OnBtnLast();
            }
        }
        return false;
    }

    private void Update()
    {
        Ray ray = new Ray(transform.position, transform.forward);
        Debug.DrawRay(ray.origin, ray.direction * 5000f, Color.red);
    }

    void UpdateCrossHairPosition()
    {
        var ray = new Ray(transform.position, transform.forward);
        RaycastHit hitInfo;
        Vector3 hitPoint;
        //Debug.DrawLine(aimTransform.position, aimTransform.forward, Color.blue);
        //Debug.LogWarning($"发射射线");
        bool missed = false;
        if (shooting)
            missed = true;
        if (Physics.Raycast(ray, out hitInfo))
        {
            if (GeneratingTarget.gm.stop)
                return;
            Debug.LogWarning($"打中目标");
            hitPoint = hitInfo.point;
            if (shooting)
            {
                if (hitInfo.transform.name.Contains("target"))
                {
                    //射中靶子 这里写入射中靶子的逻辑
                    missed = false;
                    hitInfo.transform.GetComponent<SpineAnimationLoader>().CalculateScore(hitInfo.point);
                }
            }   
        }
        if (missed)
            GeneratingTarget.gm.ShowMiss(transform.position);
        //hitPoint = aimTransform.position + aimTransform.forward * 100f;
        shooting = false;
        //Vector2 viewPoint = Camera.main.WorldToViewportPoint(hitPoint);
        //_rectTransform.localPosition = (viewPoint - Vector2.one * 0.5f) * _canvasRectTransform.rect.size;
    }

    ////短按功能键的监听
    ////void OnFunctionKeyPress()
    ////{
    ////    Debug.Log("射击");
    ////    shooting = true;
    ////}

    void OnFunctionKeyLongPress()
    {
        //长按功能键视角归位//以测试情况看是否用长按功能键这个方式来校准视角

        //smartBowHelper.ResetAim();
    }
    //void OnRotationUpdate(Quaternion rotation)
    //{
    //    aimTransform.localRotation = rotation;
    //}

    #region 限制其显示范围不超出屏幕
    private float _screenWidthHalf;
    private float _screenHeightHalf;
    private float _screenNormal;
    private float _rangeRotateY;
    private float _rangeRotateX;
    /// <summary>
    /// 标记是否出界（-1：未出界；0：左边出界；1：右边出界；2：上边出界；3：下边出界；）
    /// </summary>
    [NonSerialized] public int outBoundIndex = -1;
    void InitForLimitBound()
    {
        Camera camera = Camera.main;
        _rangeRotateX = camera.fieldOfView / 2;
        _screenWidthHalf = Screen.width / 2f;
        _screenHeightHalf = Screen.height / 2f;
        _screenNormal = _screenHeightHalf / Mathf.Tan(_rangeRotateX / 180f * Mathf.PI);
        _rangeRotateY = Mathf.Atan(_screenWidthHalf / _screenNormal) / Mathf.PI * 180f;
    }
    Vector3 LimitAngles(Vector3 angles)
    {
        //Unity默认范围（0，360）格式化为自定义范围（-180，180）
        angles.y = angles.y > 180 ? angles.y - 360 : angles.y;
        angles.x = angles.x > 180 ? angles.x - 360 : angles.x;
        //记录原来的角度
        float angleY = angles.y;
        float angleX = angles.x;
        //记录是否出界
        if (angleY < -_rangeRotateY) outBoundIndex = 0;
        else if (angleY > _rangeRotateY) outBoundIndex = 1;
        else if (angleX < -_rangeRotateX) outBoundIndex = 2;
        else if (angleX > _rangeRotateX) outBoundIndex = 3;
        else outBoundIndex = -1;
        //返回限制边界后的角度
        angles.y = Mathf.Clamp(angleY, -_rangeRotateY, _rangeRotateY);
        float rayLen = _screenNormal / Mathf.Cos(Mathf.Abs(angles.y) / 180 * Mathf.PI);
        float maxRangeRotateX = Mathf.Atan(_screenHeightHalf / rayLen) / Mathf.PI * 180f;
        if (Mathf.Abs(angleX) > Mathf.Abs(maxRangeRotateX)) angles.x = maxRangeRotateX * (angleX > 0 ? 1 : -1);
        return angles;
    }
    #endregion
}