using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.Events;
/// <summary>
/// 边缘检测函数//未完成//TODO:
/// </summary>
namespace ZXK.GYJQR
{
    public class BoundTrigger : MonoBehaviour
    {
        [Range(0.0f, 0.5f)]
        [System.NonSerialized]
        public float edgeRadius = 0.1f;//边缘检测的半径
        public UnityEvent onNearEdge;//当前处于碰撞检测的范围内
        public UnityEvent onOutEdge;//当前处于碰撞检测的范围外
        public void Start()
        {
            enabled = false;
        }
        /// <summary>
        /// 检测是否与边缘层交互
        /// </summary>
        /// <returns></returns>
        public bool OnNearEdge(string tagName)
        {
            Collider collider = null;
            var screenPos = Input.mousePosition;
            var worldPos = transform.position;
            // 摄像机的世界坐标
            var camPos = Camera.main.transform.position;
            // 投射长度
            var lineLen = 1000;
            RaycastHit[] hits = Physics.SphereCastAll(worldPos, edgeRadius, camPos - worldPos, lineLen);
            if (hits.Length > 0)
            {
                for (int i = 0; i < hits.Length; i++)
                {
                    if (hits[i].collider.tag.Equals(tagName))
                    {
                        collider = hits[i].collider;
                    }
                }
            }
            return collider != null;
        }

        /// <summary>
        /// 获取到进入碰撞检测的碰撞体
        /// </summary>
        /// <returns></returns>
        public List<Collider> GetNearEdgeCollider()
        {
            return Physics.OverlapSphere(transform.position, edgeRadius).ToList();
        }
#if UNITY_EDITOR
        private void OnDrawGizmos()
        {
            Gizmos.DrawWireSphere(transform.position, edgeRadius);
        }
#endif
    }
}