Draw snake onto screen

src/main.rs

@@ -3,6 +3,13 @@ use sdl2::keyboard::Scancode;
 
 fn main() {
     let game = Game::new("Snake", 1000, 1000);
+    let snake_boxes: Vec<(i32, i32)> = vec![(13, 13), (14, 13)];
+
+    let mut snake = SpriteCollection::with_capacity(snake_boxes.len());
+    for (x, y) in snake_boxes {
+        let s = Sprite::new("snakecell.png", x * 37, y * 37).unwrap();
+        snake.push(s);
+    }
 
     game.run(|ctx| {
         let keys = get_keyboard_state(ctx).keys;
@@ -12,6 +19,8 @@ fn main() {
                 game.terminate();
             }
         }
+
+        snake.draw(ctx).unwrap();
     })
     .unwrap();
 }