From a340cc58dd2768e88dd9bec210ff181b0654cb85 Mon Sep 17 00:00:00 2001
From: Steve Streeting <steve@stevestreeting.com>
Date: Tue, 6 Oct 2020 16:52:06 +0100
Subject: [PATCH] Warn about unmatched map names, and exit early when no maps
 are matched

---
 ue4-rebuild-lightmaps.ps1 | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/ue4-rebuild-lightmaps.ps1 b/ue4-rebuild-lightmaps.ps1
index 9a24177..b8e87e9 100644
--- a/ue4-rebuild-lightmaps.ps1
+++ b/ue4-rebuild-lightmaps.ps1
@@ -61,12 +61,19 @@ try {
     if ($maps) {
         # Explicit list of maps provided on command line
         $mapsToRebuild = Find-File-Set -startDir:$(Join-Path $src "Content") -pattern:*.umap -includeByDefault:$false -includeBaseNames:$maps
+
+        if ($mapsToRebuild.Count -ne $maps.Count) {
+            Write-Warning "Ignoring missing map(s): $($maps | Where-Object { $_ -notin $mapsToRebuild })"
+        }
     } else {
         # Derive maps from cook settings
         $mapsToRebuild = Find-File-Set -startDir:$(Join-Path $src "Content") -pattern:*.umap -includeByDefault:$config.CookAllMaps -includeBaseNames:$config.MapsIncluded -excludeBaseNames:$config.MapsExcluded
     }
 
-    # TODO check maps not found
+    if ($mapsToRebuild.Count -eq 0) {
+        throw "No maps found to rebuild"
+    }
+
     # TODO lock map files if read-only
 
     if (-not $quality) {
@@ -114,6 +121,7 @@ try {
 
 } catch {
     Write-Output $_.Exception.Message
+    Write-Output "~-~-~ UE4 Lightmap Rebuild FAILED ~-~-~"
     Exit 9
 
 }