Support custom prefix (root) for resources URLs in html5.

Allow users to specify custom resources root in lime.embed.

lime/app/Config.hx

@@ -9,6 +9,7 @@ typedef Config = {
 	@:optional var depthBuffer:Bool;
 	#if (js && html5)
 	@:optional var element:js.html.HtmlElement;
+	@:optional var assetsPrefix:String;
 	#end
 	@:optional var fps:Int;
 	@:optional var fullscreen:Bool;
@@ -20,4 +21,4 @@ typedef Config = {
 	@:optional var vsync:Bool;
 	@:optional var width:Int;
 	
-}
+}

lime/system/System.hx

@@ -29,7 +29,7 @@ class System {
 	
 	#if (js && html5)
 	@:keep @:expose("lime.embed")
-	public static function embed (element:Dynamic, width:Null<Int> = null, height:Null<Int> = null, background:String = null) {
+	public static function embed (element:Dynamic, width:Null<Int> = null, height:Null<Int> = null, background:String = null, assetsPrefix:String = null) {
 		
 		var htmlElement:HtmlElement = null;
 		
@@ -82,6 +82,7 @@ class System {
 		ApplicationMain.config.element = htmlElement;
 		ApplicationMain.config.width = width;
 		ApplicationMain.config.height = height;
+		ApplicationMain.config.assetsPrefix = assetsPrefix;
 		ApplicationMain.create ();
 		#end
 		
@@ -402,4 +403,4 @@ class System {
 }
 
 
-#end
+#end

templates/haxe/ApplicationMain.hx

@@ -32,6 +32,8 @@ class ApplicationMain {
 		::else::types.push (null);::end::
 		::end::::end::
 		
+		urls = [for (url in urls) Assets.getPath(url)];
+		
 		preloader.load (urls, types);
 		#end
 		
@@ -95,4 +97,4 @@ class ApplicationMain {
 	#end
 	
 	
-}
+}

templates/haxe/DefaultAssetLibrary.hx

@@ -57,6 +57,13 @@ class DefaultAssetLibrary extends AssetLibrary {
 		type.set (id, AssetType.$$upper(::type::));
 		::end::::end::
 		
+		var assetsPrefix = ApplicationMain.config.assetsPrefix;
+		if (assetsPrefix != null) {
+			for (k in path.keys()) {
+				path.set(k, assetsPrefix + path[k]);
+			}
+		}
+		
 		#else
 		
 		#if openfl