该对象是否存在?
下面的两个示例将给出相同的结果。
using UnityEngine; using System.Collections;
public class ExampleClass : MonoBehaviour { void Example() { if (rigidbody) Debug.Log("Rigidbody attached to this transform"); } }
...等同于...
using UnityEngine; using System.Collections;
public class ExampleClass : MonoBehaviour { void Example() { if (rigidbody != null) Debug.Log("Rigidbody attached to this transform"); } }