Add difficulty levels

src/main.rs

@@ -1,7 +1,6 @@
-use game::{Game, MacroquadRandAdapter};
+use game::Game;
 use macroquad::prelude::*;
 use miniquad::date;
-use sol_chess::generator;
 
 mod game;
 
@@ -26,7 +25,6 @@ async fn main() {
     loop {
         clear_background(background_color);
         game.handle_input();
-        game.update_window_size();
         game.draw();
         next_frame().await
     }
@@ -37,9 +35,7 @@ async fn init() -> Game {
     let texture_res = Texture2D::from_file_with_format(&texture_bytes[..], None);
     texture_res.set_filter(FilterMode::Nearest);
     build_textures_atlas();
-    let generate = generator::generate(6, 100, &MacroquadRandAdapter);
-    let board = generate.board().expect("No puzzle was generated");
-    let game = Game::new(board, texture_res);
+    let game = Game::new(texture_res);
 
     game
 }