cube闪烁效果

public class starts : MonoBehaviour {    Material M_material;    float FlashSpeed = 1;    float coloralpha = 0;    float colormax = 0.2f;    float colormin = 0f;    bool isexecPlus = true;void Start () {        M_material = gameObject.GetComponent<Renderer>().material;}void Update () {        if (isexecPlus)        {            coloralpha += FlashSpeed * Time.deltaTime;            if (coloralpha>colormax)            {                coloralpha = colormax;                isexecPlus = false;            }        }        else        {            coloralpha -= FlashSpeed * Time.deltaTime;            if (coloralpha<colormin)            {                coloralpha = colormin;                isexecPlus = true;            }        }        M_material.color = new Color(0,1,0,coloralpha);}}