unity3d中脚本运行顺序的个人研究

最新推荐文章于 2023-10-15 23:41:00 发布

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最新推荐文章于 2023-10-15 23:41:00 发布

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探讨了在Unity引擎中，脚本添加顺序对Start和Update方法执行顺序的影响，通过具体脚本实例展示了如何实现特定的执行流程。

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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 initialization

void 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 frame

void Update () {





print(Time.time + " This is jxxh02 : " + a);



}

}

jxxh03.cs

using UnityEngine;

using System.Collections;



public class jxxh03 : MonoBehaviour

{



// Use this for initialization

void 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 frame

void Update () {





print(Time.time + " This is jxxh03 : " + a);



}

}