第一章方式： 
   函数前面 +  [ContextMenu("Play")] ，Inspector面板右键调用

 

第二种方式：

OnValidate() ，值改变自动执行 

using UnityEngine;
using System.Linq;public class NightController : MonoBehaviour
{public float m_fEmissionInstensity = 0;public Material[] m_NightMats;// Start is called before the first frame updatevoid OnValidate(){m_NightMats.ToList().ForEach(_ =>{_.SetFloat("_Emission_Intensity", m_fEmissionInstensity);});}[ContextMenu("Play")]void Play(){m_NightMats.ToList().ForEach(_ =>{_.SetFloat("_Emission_Intensity", m_fEmissionInstensity);});}
}