在Unity中引用光源的问题 [英] Issues referencing a light in Unity

问题描述

我试图在Unity中制作一个驾驶游戏，作为其中的一部分，我试图使一个红绿灯闪烁.

I'm trying to make a driving game in Unity, and as part of it, I'm trying to make a traffic light blink on and off.

这是我的脚本，我将其附加到交通信号灯上.红绿灯的层次结构为:

This is my script, which I attached to the traffic light. The hierarchy of the traffic light is:

TrafficLight_A(基本交通信号灯)

TrafficLight_A (the base traffic light)

• RedLight(我正在尝试使之闪烁的灯光)

    using UnityEngine;
 using System.Collections;
 
 public class Blink_Light : MonoBehaviour
 {

     public float totalSeconds = 2;     // The total of seconds the flash wil last
     public float maxIntensity = 8;     // The maximum intensity the flash will reach
     public Light myLight = Light RedLight;        // The light (error)
 
     public IEnumerator flashNow ()
     {
         float waitTime = totalSeconds / 2;                        
         // Get half of the seconds (One half to get brighter and one to get darker)
         while (myLight.intensity < maxIntensity) {
             myLight.intensity += Time.deltaTime / waitTime;        // Increase intensity
             yield return null;
         }
         while (myLight.intensity > 0) {
             myLight.intensity -= Time.deltaTime / waitTime;        //Decrease intensity
            yield return null;
         }
         yield return null;
     }
 }

但是，我得到一个错误:

However, I get an error:

Assets/Blink_Script/Blink_Light.cs: error CS1525: Unexpected symbol "RedLight"

我该怎么做才能解决此问题? (我对C#有点陌生)

What can I do to fix this? (I'm somewhat new to C#)

推荐答案

根据您的层次结构，您正试图从名为"RedLight"的GameObject中访问Light组件，该GameObject是"TrafficLight_A" GameObject的子级.为此，使用"TrafficLight_A/RedLight"传递给GameObject.Find函数，该函数先找到RedLight GameObject，然后再找到GetComponent<Light>()来检索Light组件.您可以在Awake或Start函数中做到这一点.

According to your hierarchy, you are trying to access a Light component from a GameObject named "RedLight" which is a child of the "TrafficLight_A" GameObject. To do that, use pass "TrafficLight_A/RedLight" to the GameObject.Find function which finds the RedLight GameObject then GetComponent<Light>() to retrieve the Light component. You can do that in the Awake or Start function.

每当需要查找子对象时，都使用"/"，就像在文件路径中一样.

Whenever you need to find a child object, the "/" is used just like you would in file path.

public float totalSeconds = 2;     // The total of seconds the flash wil last
public float maxIntensity = 8;     // The maximum intensity the flash will reach
public Light myLight;

void Awake()
{
    //Find the RedLight
    GameObject redlight = GameObject.Find("TrafficLight_A/RedLight");
    //Get the Light component attached to it
    myLight = redlight.GetComponent<Light>();
}

public IEnumerator flashNow()
{
    float waitTime = totalSeconds / 2;
    // Get half of the seconds (One half to get brighter and one to get darker)
    while (myLight.intensity < maxIntensity)
    {
        myLight.intensity += Time.deltaTime / waitTime;        // Increase intensity
        yield return null;
    }
    while (myLight.intensity > 0)
    {
        myLight.intensity -= Time.deltaTime / waitTime;        //Decrease intensity
        yield return null;
    }
    yield return null;
}

这篇关于在Unity中引用光源的问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！