void Start()
{
//开始运行协同程序
StartCoroutine(WaitAndGo(1.0f));
print("waiting..."); //2
}
IEnumerator WaitAndGo(float duration)
{
print("Ready"); //1
//仅等待duration所指定的秒数
yield return new WaitForSeconds(duration);
print("Go!"); //3
}
按1,2,3顺序执行
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