Make the changes for the new assets layout.

main.cpp

@@ -117,7 +117,7 @@ int main() {
   using namespace ftxui;
   auto c = Canvas(60 * 2, 20 * 4);
 
-  int res = g_hit_buf.loadFromFile("./hit.wav");
+  int res = g_hit_buf.loadFromFile("./assets/hit.wav");
   dbc::check(res, "faile to load hit.wav");
   g_hit_sound.setBuffer(g_hit_buf);
 
@@ -190,7 +190,7 @@ int main() {
   sf::RenderWindow window(sf::VideoMode(1600,900), "Roguish");
 
   sf::Font font;
-  font.loadFromFile("./unifont-16.0.01.otf");
+  font.loadFromFile("./assets/text.otf");
   sf::Text text;
   text.setFont(font);
   text.setCharacterSize(30);