UObject.Find is not a function

[mflux]

Hi Nako, I've updated to the latest version and encountered this problem:

Error: TypeError: UObject.Find is not a function
Error:     at register (C:\Program Files (x86)\Epic Games\4.10\Engine\Plugins\UnrealJS\Content\Scripts\uclass.js:57:30)
Error:     at compile (C:/Users/Flux/Documents/Unreal Projects/CPCS/Content/Scripts/cpcsruntime.js:10:20)

UnrealJS exists here: C:\Program Files (x86)\Epic Games\4.10\Engine\Plugins\UnrealJS

Which I've unzipped from UnrealJS.Prebuilt.4.10.1-20160106-1

The line from which eventually reaches that is:

function compile( cl ){
  return uclass()( global, cl );
}

Which I've copied from one of your examples.

[mflux]

I switched back to UnrealJS.Prebuild.4.10-hotfix-20151127-1 and it appears to have fixed the issue. I assume something is wrong with the newer build?

[nakosung]

I rebuilt and uploaded a new build, please check again with the new build. (Unfortunately there is no automated test yet)

[mflux]

Hi Nako, thanks for the new build. I've tried it again and am getting the same issue.

Is it something with my install that's incorrect? Content/Scripts should be in the Plugins folder, and then what else should be in my game's Content/Scripts folder?

[nakosung]

There should be 'aliases.js' in GameContent/Scripts.

        Context.WriteAliases(Context.Paths[0] + 'aliases.js')

        Context.RunFile('aliases.js')
        Context.RunFile('polyfill/unrealengine.js')
        Context.RunFile('polyfill/timers.js')

:)

[mflux]

I do have that. One thing I noticed that was a source of confusion was that there are two Content/Scripts folders, one in the Plugin/UnrealJS and the other in Plugin/UnrealJS/Examples

What I did in the previous version was I copied the working example files in Content/Scripts folder to my project's Content/Scripts folder and then started building from there. Am I doing this correctly?

Where is this:

    Context.WriteAliases(Context.Paths[0] + 'aliases.js')

    Context.RunFile('aliases.js')
    Context.RunFile('polyfill/unrealengine.js')
    Context.RunFile('polyfill/timers.js')

Supposed to be?

[mflux]

I see now where the Context.RunFile is (bootstrap). However the aliases.js seem to be missing UObject.prototype.Find

UObject.prototype.Modify = UObject.prototype.ModifyObject;
UObject.prototype.ClearTimerbyFunctionName = UObject.prototype.K2_ClearTimer;
UObject.prototype.GetTimerElapsedTimebyFunctionName = UObject.prototype.K2_GetTimerElapsedTime;
UObject.prototype.GetTimerRemainingTimebyFunctionName = UObject.prototype.K2_GetTimerRemainingTime;
UObject.prototype.IsTimerActivebyFunctionName = UObject.prototype.K2_IsTimerActive;
UObject.prototype.IsTimerPausedbyFunctionName = UObject.prototype.K2_IsTimerPaused;
UObject.prototype.PauseTimerbyFunctionName = UObject.prototype.K2_PauseTimer;
UObject.prototype.SetTimerbyFunctionName = UObject.prototype.K2_SetTimer;
UObject.prototype.DoesTimerExistbyFunctionName = UObject.prototype.K2_TimerExists;
UObject.prototype.UnpauseTimerbyFunctionName = UObject.prototype.K2_UnPauseTimer;
UObject.prototype.ToString = UObject.prototype.Conv_ObjectToString;
UObject.prototype.Equal = UObject.prototype.EqualEqual_ObjectObject;
UObject.prototype.NotEqual = UObject.prototype.NotEqual_ObjectObject;
UObject.prototype.GetClass = UObject.prototype.GetObjectClass;

[mflux]

I've tried running HelloBlueprint example and that one is failing as well it seems.

[mflux]

Alright I was able to get it working again by reverting to the old unrealEngineClassId global method you had in an earlier uclass.js.

module.exports = function () {
    global.nextUnrealEngineClassId = global.nextUnrealEngineClassId || 0
    function fetchClassId() {
        return global.nextUnrealEngineClassId++
    }

And then...

        // get a classname
        let className = `${orgClassName}_C${fetchClassId()}`;

Instead of using the for loop and then testing UObject.Find, since that is unavailable through aliases. Hopefully we can get a correct fix for this at some point :)

[nakosung]

Actually UObject.Find is exposed via JavascriptIsolate_Private.cpp. https://github.com/ncsoft/Unreal.js/blob/master/Plugins/UnrealJS/Source/V8/Private/JavascriptIsolate_Private.cpp#L1442 It isn't a javascript function, so it cannot be available if you have a right build.