如果启用了 MonoBehaviour,则每帧调用 Update。
在实现任何类型的游戏脚本时,Update
都是最常用函数。
但并非所有 MonoBehaviour
脚本都需要 /Update/。
using UnityEngine; using System.Collections;
// The ExampleClass starts with Awake. The GameObject class has activeSelf // set to false. When activeSelf is set to true the Start() and Update() // functions will be called causing the ExampleClass to run. // Note that ExampleClass (Script) in the Inspector is turned off. It // needs to be ticked to make script call Start.
public class ExampleClass : MonoBehaviour { private float update;
void Awake() { Debug.Log("Awake"); update = 0.0f; }
IEnumerator Start() { Debug.Log("Start1"); yield return new WaitForSeconds(2.5f); Debug.Log("Start2"); }
void Update() { update += Time.deltaTime; if (update > 1.0f) { update = 0.0f; Debug.Log("Update"); } } }
要获取自上次调用 Update 以来所经过的时间,请使用 Time.deltaTime。 仅在启用了 Behaviour 时,才会调用该函数。 您可以重写该函数来提供自定义组件的功能。
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