方法介绍

【unity学习笔记】OnMouseEnter、OnMouseOver、OnMouseExit_unity onmouseover_一白梦人的博客-CSDN博客https://blog.csdn.net/a1208498468/article/details/117856445

GetComponent()详解_getcomponet<> 动态名称-CSDN博客https://blog.csdn.net/kaixindragon/article/details/44776451

实现代码

public class color : MonoBehaviour
{
    public Color oldcolor;

    // Start is called before the first frame update
    void Start()
    {
        oldcolor = GetComponent<Renderer>().material.color;  //获取颜色
    }
    void OnMouseOver()
    {
        GetComponent<Renderer>().material.color = Color.red; //变成红色
    }

    void OnMouseExit()
    {
        GetComponent<Renderer>().material.color = oldcolor;  //变回原来的颜色
    }

鼠标不在物体上        鼠标放在物体上