using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Video;

public class VideoPlayerPlane : MonoBehaviour {

    [SerializeField]private Transform m_TransCamera = null;
    [SerializeField] float m_ActiveDistance = 10.0f;
    private VideoPlayer m_VideoPlayer = null;
    private MeshRenderer m_MeshRenderer = null;
    private float m_Distance = 0;
    private Transform m_Trans = null;

    private void Awake() {
        m_VideoPlayer = this.GetComponent<VideoPlayer>();
        m_MeshRenderer = this.GetComponent<MeshRenderer>();
        m_Trans = transform;
        if (m_MeshRenderer != null)
            m_MeshRenderer.enabled = false;
        if (m_VideoPlayer != null)
            m_VideoPlayer.Stop();
    }

    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);
            Debug.LogFormat("\"{0}\"  距离：{1}", name, m_Distance);
            if (m_Distance <= m_ActiveDistance) {
                ActiveVideoPlayer();
            } else {
                DeactiveVideoPlayer();
            }
        }
    }

    void ActiveVideoPlayer() {
        if (m_MeshRenderer != null)
            m_MeshRenderer.enabled = true;
        if (m_VideoPlayer != null)
            m_VideoPlayer.Play();
    }

    void DeactiveVideoPlayer() {
        if (m_MeshRenderer != null)
            m_MeshRenderer.enabled = false;
        if (m_VideoPlayer != null)
            m_VideoPlayer.Stop();
    }
}