Borderlands3-Epic-NucleusCoop

borderlands3.js

Game.DirSymlinkExclusions = ["OakGame\\Binaries\\Win64"];
Game.GameName = "Borderlands 3";
Game.HandlerInterval = 100;
Game.SymlinkExe = false;
Game.SymlinkGame = true;
Game.SymlinkFolders = true;
Game.ExecutableName = "Borderlands3.exe";
Game.GUID = "Borderlands 3";
Game.MaxPlayers = 4;
Game.MaxPlayersOneMonitor = 4;
Game.BinariesFolder = "OakGame\\Binaries\\Win64";
Game.NeedsSteamEmulation = false;
Game.UseGoldberg = false;
Game.LauncherTitle = "splashscreen";
Game.Hook.ForceFocus = true;
Game.Hook.ForceFocusWindowName = "Borderlands® 3";
Game.Hook.DInputEnabled = false;
Game.Hook.XInputEnabled = true;
Game.Hook.XInputReroute = false;
Game.Hook.CustomDllEnabled = false;
Game.XInputPlusDll = ["xinput1_3.dll"];
Game.SetWindowHook = true;
Game.ResetWindows = true;
Game.PauseBetweenStarts = 30;
Game.KeepSymLinkOnExit = false;
Game.FakeFocus = true;
Game.FakeFocusSendActivate = false;
Game.HookFocus = true;
Game.ResetWindows = true;
Game.PromptBetweenInstances = false;
Game.UserProfileConfigPath =
  "Documents\\My Games\\Borderlands 3\\Saved\\Config\\WindowsNoEditor";
Game.UserProfileSavePath =
  "Documents\\My Games\\Borderlands 3\\Saved\\SaveGames";
Game.Description = "Only works with the Epic Games version";

Game.SupportsMultipleKeyboardsAndMice = true;

Game.HookSetCursorPos = true;
Game.HookGetCursorPos = true;
Game.HookGetKeyState = true;
Game.HookGetAsyncKeyState = true;
Game.HookGetKeyboardState = true;
Game.HookFilterRawInput = true;
Game.HookFilterMouseMessages = false;
Game.HookUseLegacyInput = false;
Game.HookDontUpdateLegacyInMouseMsg = false;
Game.HookMouseVisibility = false;

Game.SendNormalMouseInput = true;
Game.SendNormalKeyboardInput = true;
Game.SendScrollWheel = true;
Game.ForwardRawKeyboardInput = false;
Game.ForwardRawMouseInput = false;
Game.HookReRegisterRawInput = true;
Game.HookReRegisterRawInputMouse = true;
Game.HookReRegisterRawInputKeyboard = true;
Game.DrawFakeMouseCursor = false;
Game.LockInputAtStart = false;
Game.LockInputToggleKey = 0x23;

Game.Play = function() {
  var EpicArgs = 'PREFLIGHT_SCRIPT_WILL_REPLACE';

  var GameArgs =
    " -windowed -AlwaysFocus -nosplash" + Context.IsKeyboardPlayer
      ? " -NoController"
      : "";

  var Args = GameArgs + EpicArgs;

  Context.StartArguments = Args;

  var savePath =
    Context.EnvironmentPlayer +
    Context.UserProfileConfigPath +
    "\\GameUserSettings.ini";
  Context.ModifySaveFile(savePath, savePath, Nucleus.SaveType.INI, [
    new Nucleus.IniSaveInfo(
      "/Script/OakGame.OakGameUserSettings",
      "FullscreenMode",
      "2"
    ),
    new Nucleus.IniSaveInfo(
      "/Script/OakGame.OakGameUserSettings",
      "ResolutionSizeX",
      Context.Width
    ),
    new Nucleus.IniSaveInfo(
      "/Script/OakGame.OakGameUserSettings",
      "ResolutionSizeY",
      Context.Height
    )
  ]);
};

borderlands3_preflight.ps1

$NC_SCRIPT_PATH = ".\Borderlands3.js"
$NC_SCRIPT_REPLACE_STRING = "PREFLIGHT_SCRIPT_WILL_REPLACE"
$EPIC_LOG_PATH = "$env:USERPROFILE\AppData\Local\EpicGamesLauncher\Saved\Logs\EpicGamesLauncher.log"

try {
    Write-Host Checking if NC Script file needs launch args
    $containsString = Select-String -Path $NC_SCRIPT_PATH -Pattern $NC_SCRIPT_REPLACE_STRING
    If ($null -eq $containsString) {
        Write-Host "Launch args already added! Skipping..."
        exit
    }
}
catch {
    Write-Error "Unable to open nucleus script file. Quitting..." -ErrorAction Stop
    
}

try {    
    Write-Host Checking if epic logs already contain launch args
    $Launch_Info = Get-Content $env:USERPROFILE\AppData\Local\EpicGamesLauncher\Saved\Logs\EpicGamesLauncher.log | `
        Where-Object { $_ -like '*FCommunityPortalLaunchAppTask: Launching app*Borderlands3.exe*' } | `
        Select-Object -First 1
}
catch {
    # Cant find args yet
}

if ($null -eq $Launch_Info) {

    # Start an instance of Borderlands 3 using the Epic Launcher
    try {
        Write-Host Args not found yet. Starting Borderlands 3 using Epic Launcher
        Start-Process -FilePath "com.epicgames.launcher://apps/Catnip?action=launch&silent=true"
    }
    catch {
        Write-Error "Unable to launch Borderlands 3 using Epic Launcher. Quitting..." -ErrorAction Stop
    }

    # Get args needed to launch BL3 offline
    try {
        # Search through Epic Launcher logs to find the launch parameters for Borderlands 3.
        Write-Host Finding offline launch arguments
        while (($null -eq $Launch_Info ) -or ($null -eq $bl3_process)) {
            Start-Sleep -s 1
            $bl3_process = Get-Process -name Borderlands3 -ErrorAction SilentlyContinue
            $Launch_Info = Get-Content $EPIC_LOG_PATH | `
                Where-Object { $_ -like '*FCommunityPortalLaunchAppTask: Launching app*Borderlands3.exe*' } | `
                Select-Object -First 1
        }

        Start-Sleep -s 15
        Write-Host Killing Borderlands3
        Stop-Process $bl3_process.Id
    }
    catch {
        Write-Error "Unable to get offline args for Borderlands 3. Quitting..." -ErrorAction Stop
    }
    
}




try {
    Write-Host Parsing launch args
    
    # Reformat it, split out the binary/args
    $null, $bl3_bin = $Launch_Info -split "Launching app "
    $bl3_bin = $bl3_bin -replace "'", ""
    $bl3_bin, $bl3_arg = $bl3_bin -split "with commandline "
    $bl3_bin = $bl3_bin -replace "Borderlands3.exe", "OakGame/Binaries/Win64/Borderlands3.exe"

    # Sanity check- make sure binary exists
    $null = Test-Path -Path $bl3_bin -ErrorAction stop
    Write-Host Found Borderlands 3 args

    Write-Host Writing launch args to script
    (Get-Content -Path $NC_SCRIPT_PATH) -replace $NC_SCRIPT_REPLACE_STRING, $bl3_arg | Set-Content -Path $NC_SCRIPT_PATH
}
catch {
    Write-Error "Unable to write launch args to NC script. Quitting..." -ErrorAction Stop    
}


Write-Host All done!

So I stick the preflight and .js file in my nucleus coop scripts. I run the .ps1 file with powershell. Then I try to run the game and just get a "sorry, something went wrong" error from BL3 and it doesn't startup.

Hi, how would you like to join the developer discord? Would be awesome to have this script downloadable through the app

I joinded discord ! Im trying to run prefligth with powershell (i copied paste the script and pressed enter) and then i have a red msg looking like this :

Eddit : i managed that the game appear in the nucleus coop app not sure how but it tells that i need to start the game with the epic game lancher.
Edit : i think it did work for prefligth (i rigth clicked instead ) and it does not appear in red. tho it didnt change the error msg to use Epic Launcher

Do i have to run the js. in powershell 2 ? if yes i tried and it give a lot or Error msg. not sure how to do this