Advanced Features

Complete the game-over and high-score system. Fill each blank.

import json, os

SAVE_FILE = "snake_scores.json"

def load_scores():
    if os.path.exists(▢1):
        with open(SAVE_FILE) as f:
            return json.▢2(f)
    return {"high": ▢3}

def save_scores(data):
    with open(SAVE_FILE, ▢4) as f:
        json.dump(data, ▢5)

# In the game update:
scores = load_scores()
if score > scores[▢6]:
    scores["high"] = score
    save_scores(▢7)

# Game-over screen function:
def show_game_over(screen, score, high):
    overlay = pygame.Surface(screen.get_size(), pygame.▢8)
    overlay.fill((0, 0, 0, ▢9))
    screen.blit(overlay, (0, 0))
    # render text centred on screen
    pygame.display.▢10()

The game-over / high-score code below has 3 bugs. Type the corrected line for each.

import json, os

def load_scores():
    if os.path.exists("snake_scores.json"):
        with open("snake_scores.json") as f:
            return json.loads(f)     # Bug 1 – wrong method

def save_scores(data):
    with open("snake_scores.json") as f:   # Bug 2 – wrong file mode
        json.dump(data, f)

scores = load_scores()
if score > scores["high"]:
    scores["high"] = score
    save_scores(scores)
    score = 0                        # Bug 3 – resets score before showing it

Build a **game-over overlay**: a semi-transparent black surface drawn over the screen, showing "GAME OVER", the final score, and the high score. Pressing SPACE or ENTER restarts.

def show_game_over(screen, score, high_score):
    """Draw a game-over overlay and wait for SPACE/ENTER to restart."""
    overlay = pygame.Surface(screen.get_size(), pygame.SRCALPHA)
    overlay.fill((0, 0, 0, 180))
    screen.blit(overlay, (0, 0))

    # YOUR CODE: render "GAME OVER", score, high_score centred on screen
    # YOUR CODE: call pygame.display.flip() then wait for SPACE/ENTER key

    pass

**Challenge:** Package the complete game — Snake class, Game class, game-over screen, persistent high score — into a single clean `snake.py` file. Write comments explaining each major section. Paste the full file or a detailed outline with key code snippets.

Answer each prompt thoughtfully. There are no right or wrong answers — this is your own reflection.