+extern Font* gold_text;
+extern Font* white_text;
+extern Font* blue_text;
+extern Font* gray_text;
+extern Font* white_small_text;
+extern Font* white_big_text;
+extern Font* yellow_nums;
+
+/** maps a virtual resource path to a real path (ie. levels/bla is mapped to
+ * $DATADIR/levels/bla or $HOME/.supertux/levels/bla)
+ * All paths inside the game should be handled in as virtual paths and then
+ * expanded with this function just before the call to fopen or std::ifstream.
+ */
+std::string get_resource_filename(const std::string& resource);
+