XiJianYCYL/Assets/XDKUnityCloudExamples/Common/Scripts/Arrow.cs

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class Arrow : MonoBehaviour {
    [SerializeField] private Vector2 m_ActiveDistanceRange = new Vector2(1.0f, 5.0f);
    [SerializeField] private bool ifDebugLog = false;

    private Renderer[] m_Renderers = null;
    private float m_Distance = 0;
    private Transform m_Trans = null;
    [SerializeField] private Transform m_TransCamera = null;

    private void Awake() {
        m_Renderers = gameObject.GetComponentsInChildren<Renderer>();
        m_Trans = transform;
        m_Renderers.ToList().ForEach((mr) => { mr.enabled = false; });
    }

    private void OnEnable() {
        StartCoroutine(EnumCheckDistance());
    }

    private void OnDisable() {
        StopAllCoroutines();
    }

    IEnumerator EnumCheckDistance() {
        while (true) {
            yield return new WaitForSeconds(1.0f);
            m_Distance = Vector3.Distance(m_Trans.position, m_TransCamera.position);
            if (ifDebugLog) {
                Debug.LogFormat("\"{0}\" 距离：{1}", name, m_Distance);
            }
            if (m_Distance >= m_ActiveDistanceRange.x && m_Distance <= m_ActiveDistanceRange.y) {
                Active();
            } else {
                Deactive();
            }
        }
    }

    void Active() {
        m_Renderers.ToList().ForEach((mr) => { mr.enabled = true; });
    }

    void Deactive() {
        m_Renderers.ToList().ForEach((mr) => { mr.enabled = false; });
    }
}