Bug TypeError: screen.orientation.lock is not a function.

we have started getting this error while loading our webGL game on Safari browser.

according to safari documentation, the lock / unload API is still experimental.

i wonder how is it possible that unity invokes an experimental method of safari all of a sudden. we do enforce landscape orientation in our game.

did anyone encounter this as well - i can't find anything on the subject here or anywhere.

 

This bug was introduced in Unity 2021.3. In Unity 2020.3 I am not getting this error.

Attached a screenshot of the error in Safari and Chrome:



chrome:

 

Has anyone figured out how to fix this error? Or just change the version of the unity?

 

In Unity 2022.3.2 it's still here.

I have a problem with the getting incorrect orientation after changing the device orientation.

Possibly, it's related to this bug.

I guess that this affects the C#'s "Screen.orientation" as well as both Input Systems internally:

• Old - Input Manager (iOS, Android)
• New - Input System (iOS — so "Compensate For Screen Orientation" setting doesn't work sometimes).

On the opposite side the next assets called Gyroscope Accelerometer WebGL and Screen Orientation WebGL get orientation from the JavaScript, and they don't have such issues.

 

bump

 

If you want just emergency stop the error , please patch for /PlaybackEngines/WebGLSupport/BuildTools/lib/ScreenOrientation.js

Code (JavaScript):

1.  
2.         JS_ScreenOrientation_Lock: function(orientationLockType) {
3.                 // We will use the Screen Orientation API if available, and silently return if not available
4.                 // - https://www.w3.org/TR/screen-orientation/
5.                 // - https://caniuse.com/screen-orientation
6.                 // - https://developer.mozilla.org/en-US/docs/Web/API/Screen/orientation
7.                 if (!screen.orientation) {
8.                         // As of writing, this is only not implemented on Safari
9.                         return;
10.                 }
11.                 // here patched. all browser disabled
12.                 return;
13.  

 

Thanks for fixing this, any idea when this is in an official release?

 

Still not fixed in 2022.3.16f1

 

I have written this post-build script if you do not want to patch the javascript file (/PlaybackEngines/WebGLSupport/BuildTools/lib/ScreenOrientation.js) every time you update the unity version.

Code (CSharp):

1. public class WebGLPostBuildProcessor
2.     {
3.         [PostProcessBuild]
4.         public static void OnPostprocessBuild(BuildTarget target, string pathToBuiltProject)
5.         {
6.             if (target == BuildTarget.WebGL)
7.             {
8.                 //get folder name
9.                 string folderName = Path.GetFileName(pathToBuiltProject);
10.                 string frameworkJsPath = Path.Combine(pathToBuiltProject, $"Build/{folderName}.framework.js");
11.                 if (File.Exists(frameworkJsPath))
12.                 {
13.                     string content = File.ReadAllText(frameworkJsPath);
14.  
15.                     if (content.Contains("if(!screen.orientation){return}"))
16.                     {
17.                         Debug.Log("Replacing screen.orientation");
18.                     }
19.                     else
20.                     {
21.                         Debug.LogWarning("We can remove this post-build script if the issue is fixed in Unity 2022.3.17f1 or higher");
22.                     }
23.  
24.                     content = content.Replace("if(!screen.orientation){return}", "return;");
25.                     File.WriteAllText(frameworkJsPath, content);
26.                 }
27.             }
28.         }
29.     }