unity3d中脚本运行顺序的个人研究_综合

为一个场景对象添加上三个脚本，在场景开始运行时，脚本中的Start方法将会按照脚本添加的顺序来依次运行，而Update方法却是完全相反
比如：有A1、A2、A3三个脚本，它们的添加顺序是A1、A3、A2，那么在场景运行时，程序运行顺序是A1.Start()、A3.Start()、 A2.Start()、A2.Update()、A3.Update()、A1.Update()……，即使A1.Start()或A2.Update ()运算时间超过其它的方法，那么其它的方法也会等待其运行完成后才会开始运行之……

下面是三个脚本文件的例程：

jxxh01.cs

using UnityEngine;
using System.Collections;public class jxxh01 : MonoBehaviour
{// Use this for initialization
void Start()
{for (int temp02 = 0; temp02 < 5; temp02++)
{
for (int temp01 = 0; temp01 < 5; temp01++)
{
int a01 = 0;
for (int temp = 0; temp < 50000; temp++)
{
a01++;a = a01;
}
a01 = 0;
}
}print(Time.time + " This is jxxh01 : " + a);}public int ForValue=10000;int a = 0;// Update is called once per frame
void Update () {for (int temp = 0; temp < ForValue; temp++) { a = temp; }
print(Time.time + " This is jxxh01 : " + a);}
}

jxxh02.cs

using UnityEngine;using System.Collections;public class jxxh02 : MonoBehaviour{// Use this for initializationvoid Start(){for (int temp = 0; temp < 10000; temp++){a++;}print(Time.time + " This is jxxh02 : " + a);}public int ForValue = 100;int a = 0;// Update is called once per framevoid Update () {print(Time.time + " This is jxxh02 : " + a);}}

jxxh03.cs

using UnityEngine;using System.Collections;public class jxxh03 : MonoBehaviour{// Use this for initializationvoid Start(){for (int temp = 0; temp < 10000; temp++){a++;}print(Time.time + " This is jxxh03 : " + a);}public int ForValue = 100;int a = 0;// Update is called once per framevoid Update () {print(Time.time + " This is jxxh03 : " + a);}}