successfully implemented asset handling

standalone-openfl-app/src/macros/AssetMacro.hx

@@ -164,6 +164,10 @@ class AssetMacro {
      * Build manifest JSON files for each library
      */
     private static function buildManifests(manifestDir:String) {
+        // Create an array to hold all assets for the default manifest
+        var allAssets = [];
+        
+        // First, process individual library manifests
         for (library in assetMap.keys()) {
             var assets = assetMap.get(library);
             var manifest = {
@@ -172,6 +176,16 @@ class AssetMacro {
                 rootPath: "../assets/" + library + "/"
             };
             
+            // Add assets to combined collection with library prefix
+            for (asset in assets) {
+                allAssets.push({
+                    id: library + "/" + asset.id,
+                    path: library + "/" + asset.path,
+                    size: asset.size,
+                    type: asset.type
+                });
+            }
+            
             var manifestPath = manifestDir + "/" + library + ".json";
             try {
                 var content = Json.stringify(manifest, null, "  ");
@@ -181,6 +195,23 @@ class AssetMacro {
                 Context.warning('Failed to write manifest: ${manifestPath}. Error: ${e}', Context.currentPos());
             }
         }
+        
+        // Create the default manifest with all assets
+        var defaultManifest = {
+            name: "default",
+            assets: allAssets,
+            rootPath: "../assets/"
+        };
+        
+        // Save the default manifest
+        var defaultManifestPath = manifestDir + "/default.json";
+        try {
+            var content = Json.stringify(defaultManifest, null, "  ");
+            File.saveContent(defaultManifestPath, content);
+            Context.info('Built default manifest: ${defaultManifestPath} with ${allAssets.length} assets', Context.currentPos());
+        } catch (e) {
+            Context.warning('Failed to write default manifest: ${defaultManifestPath}. Error: ${e}', Context.currentPos());
+        }
     }
     
     // Helper functions