From fe8eaa3db617dcd2fed8ab78705d5357c709a9ec Mon Sep 17 00:00:00 2001
From: Steve Streeting <steve@stevestreeting.com>
Date: Wed, 21 Oct 2020 17:32:56 +0100
Subject: [PATCH] Added Blueprint recompile utility

---
 ue4-blueprint-recompile.ps1 | 103 ++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 ue4-blueprint-recompile.ps1

diff --git a/ue4-blueprint-recompile.ps1 b/ue4-blueprint-recompile.ps1
new file mode 100644
index 0000000..086a240
--- /dev/null
+++ b/ue4-blueprint-recompile.ps1
@@ -0,0 +1,103 @@
+# Blueprint bulk recompile helper
+[CmdletBinding()] # Fail on unknown args
+param (
+    # Optional source folder, assumed current folder
+    [string]$src,
+    # Optional subfolder of Content to parse, default "Blueprints"
+    [string]$bpdir = "Blueprints",
+    # Dry-run; does nothing but report what *would* have happened
+    [switch]$dryrun = $false,
+    [switch]$help = $false
+)
+
+. $PSScriptRoot\inc\platform.ps1
+. $PSScriptRoot\inc\packageconfig.ps1
+. $PSScriptRoot\inc\projectversion.ps1
+. $PSScriptRoot\inc\uproject.ps1
+. $PSScriptRoot\inc\ueinstall.ps1
+. $PSScriptRoot\inc\filetools.ps1
+
+# Include Git tools locking
+. $PSScriptRoot\GitScripts\inc\locking.ps1
+
+function Write-Usage {
+    Write-Output "Steve's UE4 Blueprint recompile tool"
+    Write-Output "Usage:"
+    Write-Output "  ue4-blueprint-recompile.ps1 [-src:sourcefolder] [-bpdir:blueprintdir] [-dryrun]"
+    Write-Output " "
+    Write-Output "  -src          : Source folder (current folder if omitted)"
+    Write-Output "  -bpdir        : Path to Blueprints relative to your Content dir, defaults to 'Blueprints'"
+    Write-Output "  -dryrun       : Don't perform any actual actions, just report on what you would do"
+    Write-Output "  -help         : Print this help"
+    Write-Output " "
+    Write-Output "Environment Variables:"
+    Write-Output "  UE4INSTALL   : Use a specific UE4 install."
+    Write-Output "               : Default is to find one based on project version, under UE4ROOT"
+    Write-Output "  UE4ROOT      : Parent folder of all binary UE4 installs (detects version). "
+    Write-Output "               : Default C:\Program Files\Epic Games"
+    Write-Output " "
+}
+
+if ($src.Length -eq 0) {
+    $src = "."
+    Write-Verbose "-src not specified, assuming current directory"
+}
+
+$ErrorActionPreference = "Stop"
+
+if ($help) {
+    Write-Usage
+    Exit 0
+}
+
+Write-Output "~-~-~ UE4 Blueprint Recompile Start ~-~-~"
+
+try {
+    
+    $config = Read-Package-Config -srcfolder:$src
+    $projfile = Get-Uproject-Filename -srcfolder:$src -config:$config
+    $proj = Read-Uproject $projfile
+    $ueVersion = Get-UE-Version $proj
+    $ueinstall = Get-UE-Install $ueVersion
+
+    Write-Output ""
+    Write-Output "Project File  : $projfile"
+    Write-Output "UE Version    : $ueVersion"
+    Write-Output "UE Install    : $ueinstall"
+    Write-Output "Blueprint Dir : Content/$bpdir"
+    Write-Output ""
+
+    $bpfullpath = Join-Path $src "Content/$bpdir" -Resolve
+
+    $argList = [System.Collections.ArrayList]@()
+    $argList.Add("`"$projfile`"") > $null
+    $argList.Add("-run=ResavePackages") > $null
+    $argList.Add("-packagefolder=`"$bpfullpath`"") > $null
+    $argList.Add("-autocheckout") > $null
+
+    $ueEditorCmd = Join-Path $ueinstall "Engine/Binaries/Win64/UE4Editor-Cmd$exeSuffix"
+
+    if ($dryrun) {
+        Write-Output "Would have run:"
+        Write-Output "> $ueEditorCmd $($argList -join " ")"
+
+    } else {
+        $proc = Start-Process $ueEditorCmd $argList -Wait -PassThru -NoNewWindow
+        if ($proc.ExitCode -ne 0) {
+            throw "Blueprint recompile build failed!"
+        }
+
+    }
+
+} catch {
+    Write-Output $_.Exception.Message
+    Write-Output "~-~-~ UE4 Blueprint Recompile FAILED ~-~-~"
+    Exit 9
+
+}
+
+
+Write-Output "~-~-~ UE4 Blueprint Recompile OK ~-~-~"
+if (!$dryrun) {
+    Write-Output "Reminder: You may need to commit and unlock Blueprint files"
+}