一天一个小知识 Unity [ExecuteInEditMode]

 ExecuteInEditMode

Unity中默认情况下，脚本只有在运行的时候才被执行，加上此属性后，不运行程序，也能执行脚本。

 

例如 ,不运行unity,VideoPlayer组件也会播放视频

using UnityEngine;
using UnityEngine.Video;

[ExecuteInEditMode]
[RequireComponent(typeof(VideoPlayer))]
public class VideoPlayerPlayFromStreamingAssets : MonoBehaviour
{
    public bool LoadFromStreamingAssets = true;
    public string URL;

    private void Start()
    {
        VideoPlayer vp = gameObject.GetComponent<VideoPlayer>();
        if (vp != null)
        {
            vp.source = VideoSource.Url;
            vp.playOnAwake = true;
            vp.url = Application.streamingAssetsPath + "/" + URL.Replace(@"\", "/");
            vp.Play();

        }
    }

}