Unity 5 WebGL：与C＃中的外部JavaScript通信 [英] Unity 5 WebGL: Communicating with external javascript from C#

问题描述

我正在尝试使用与SCORM 1.2集成的Unity 5 WebGL项目。这涉及Unity WebGL构建与一些外部JavaScript进行通信。

I'm trying to get a Unity 5 WebGL project integrated with SCORM 1.2. This involves the Unity WebGL build communicating with some external javascript.

我找到了这个页面：

https://docs.unity3d.com/Manual/webgl-interactingwithbrowserscripting.html

...建议将外部js放在Assets / Plugins / WebGL中文件夹并将文件另存为.jslib文件。以下是我的临时SCORM.jslib文件的外观：

I found this page:
https://docs.unity3d.com/Manual/webgl-interactingwithbrowserscripting.html
...which suggests placing the external js in an Assets/Plugins/WebGL folder and saving the file as a .jslib file. Here's how my temporary SCORM.jslib file looks:

var SCORM = {
    Hello: function()
    {
        window.alert("Hello, world!");
        console.log("Hello function in SCORM.jslib has been called.");
    }
}

然后，在附加到我的gameObject触发器的C＃脚本中（立方体）：

Then, in a C# script attached to my gameObject trigger (a cube):

using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;

public class CompletionTrigger : MonoBehaviour {    

    [DllImport("__Internal")]
    private static extern void Hello();

    void Start () {

        Hello();

    }    

    void Update () {

    }
}

问题是我在调用'Hello（）'的行中遇到'EntryPointNotFoundException'错误。

The problem is I'm getting an 'EntryPointNotFoundException' error at the line where 'Hello()' is called.

我在这里搜索并搜索过，但答案似乎与开发C ++ dll或RoR有关。

I've googled and searched here, but the answers seem to relate to developing C++ dlls or RoR.

有谁知道导致此错误的原因是什么？
谢谢。

Does anyone know what's causing this error? Thanks.

编辑

我在另一个页面上看到评论说该错误仅出现在编辑器，所以我想我会再次运行WebGL构建。我收到以下错误：

EDIT
I saw a comment on another page that said the error appeared only in the editor so I thought I'd run a WebGL build again. I get the following error:

Failed running "C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport/BuildTools/Emscripten_Win/python/2.7.5.3_64bit/python.exe" "C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport/BuildTools/Emscripten/emcc" @"D:/Projects/Unity 3D/Packaging Test/Assets/../Temp/emcc_arguments.resp"
stdout:
WARNING: sanity check failed to run [Errno 13] Permission denied: 'C:\\Program Files\\Unity\\Editor\\Data\\PlaybackEngines\\WebGLSupport/BuildTools/emscripten.config_sanity'
stderr:
WARNING  root: did not see a source tree above or next to the LLVM root directory (guessing based on directory of C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport/BuildTools/Emscripten_FastComp_Win\llc), could not verify version numbers match
INFO     root: (Emscripten: Running sanity checks)
WARNING  root: java does not seem to exist, required for closure compiler, which is optional (define JAVA in ~/.emscripten if you want it)
error: failure to execute js library "D:\Projects\Unity 3D\Packaging Test\Assets\Plugins\WebGL\SCORM.jslib": ReferenceError: window is not defined,,ReferenceError: window is not defined

错误消息会持续一段时间，但我在此处包含的最后一行似乎建议编译器不知道如何处理'窗口'，说它没有定义。还有一个提到健全检查，这似乎很合适。

The error message continues for a while, but the last line I've included here seems to suggest the compiler doesn't know what to do with 'window', saying it's not defined. There's also mention of a 'sanity check' in there, which seems quite apt.

再一次，如果有人有任何指针，我将非常感激。

Once again, if anyone has any pointers, it would be much appreciated.

推荐答案

如果有人遇到同样的问题，我设法回避了这个问题：

In case anyone has the same problem, I've managed to dodge this issue:

我在Unity手册页面上使用了第一个选项，所以现在我的SCORM.js文件被加载到index.html WebGL模板中。

I used the first option on that Unity Manual page instead, so now my SCORM.js file is loaded into the index.html WebGL template.

（要制作自定义WebGL模板，请在Assets文件夹中创建'WebGLTemplates'文件夹。包含index.html文件的资产/模板中的任何文件夹都将作为模板提供在编辑>项目设置>播放器检查器面板中。

(To make a custom WebGL template, create a 'WebGLTemplates' folder in your Assets folder. Any folders in Assets/Templates containing index.html files will be available as templates in the Edit > Project Settings > Player inspector panel).

所以，添加了......

So, having added...

<script src="js/SCORM.js"></script>

...到我的index.html并将SCORM.js放在名为'js'的文件夹中 - 在最终构建index.html文件旁边，我现在可以从C＃调用SCORM.js函数，如下所示：

...to my index.html and put SCORM.js in a folder called 'js' - adjacent to the final build index.html file, I can now call SCORM.js functions from C#, like this:

Application.ExternalCall("initialiseSCORM", "This could specify an id");

下一步将从SCORM.js获取SCORM信息，但正如该页面建议的那样，我应该能够使用：

The next step will be getting SCORM information from SCORM.js, but as that page suggested, I should be able to use:

SendMessage ('MyGameObject', 'MyFunction', 'foobar');

...在SCORM.js中将信息传递到Unity游戏。

...in SCORM.js to pass information into the Unity game.

这篇关于Unity 5 WebGL：与C＃中的外部JavaScript通信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！