Unity 侦听进入播放模式、Unity加载时初始化编辑器类

"Editor"文件夹下的PlayModeStateChangedHandler.cs

using UnityEngine;
using UnityEditor;
//允许在 Unity 加载时初始化编辑器类，无需用户操作。
[InitializeOnLoadAttribute]
public static class PlayModeStateChangedHandler{
    
    //初始化类时,注册事件处理函数
    static PlayModeStateChangedHandler(){
        EditorApplication.playModeStateChanged+=OnPlayerModeStateChanged;
    }

    private static void OnPlayerModeStateChanged(PlayModeStateChange playModeState){
        Debug.LogFormat("state:{0} will:{1} isPlaying:{2}",playModeState,EditorApplication.isPlayingOrWillChangePlaymode,EditorApplication.isPlaying);
    }
    //当点"Play"按钮进入播放模式时
    //输出：
    //state:ExitingEditMode will:True isPlaying:False
    //state:EnteredPlayMode will:True isPlaying:True
}