From 12ddca85d9ac02877f34cb28c1f25cd0008652b6 Mon Sep 17 00:00:00 2001
From: Joseph Cloutier <player3.14@gmail.com>
Date: Tue, 28 May 2024 19:33:30 -0400
Subject: [PATCH] Implement `AssetHelper.deleteStaleAssets()`.

---
 src/lime/tools/AssetHelper.hx    | 19 +++++++++++++++++++
 src/lime/tools/PlatformTarget.hx |  2 ++
 2 files changed, 21 insertions(+)

diff --git a/src/lime/tools/AssetHelper.hx b/src/lime/tools/AssetHelper.hx
index 2f9ef857c..a109a4d0d 100644
--- a/src/lime/tools/AssetHelper.hx
+++ b/src/lime/tools/AssetHelper.hx
@@ -191,6 +191,25 @@ class AssetHelper
 		return manifests;
 	}
 
+	public static function deleteStaleAssets(project:HXProject, targetDirectory:String):Void
+	{
+		var newAssets = [for (asset in project.assets) asset.targetPath];
+
+		var recordFile:String = targetDirectory + "/.assets";
+		if (FileSystem.exists(recordFile))
+		{
+			for (oldAsset in File.getContent(recordFile).split("\n"))
+			{
+				if (oldAsset.length > 0 && newAssets.indexOf(oldAsset) < 0)
+				{
+					System.deleteFile(targetDirectory + "/bin/" + oldAsset);
+				}
+			}
+		}
+
+		File.saveContent(recordFile, newAssets.join("\n"));
+	}
+
 	private static function getAssetData(project:HXProject, pathGroups:Map<String, Array<String>>, libraries:Map<String, Library>, library:String,
 			asset:Asset):Dynamic
 	{
diff --git a/src/lime/tools/PlatformTarget.hx b/src/lime/tools/PlatformTarget.hx
index 87cf6e1d0..2feba96b9 100644
--- a/src/lime/tools/PlatformTarget.hx
+++ b/src/lime/tools/PlatformTarget.hx
@@ -103,6 +103,8 @@ class PlatformTarget
 			// AssetHelper.processLibraries (project, targetDirectory);
 			// #end
 			update();
+
+			AssetHelper.deleteStaleAssets(project, targetDirectory);
 		}
 
 		if (command == "build" || command == "test")