game.py

import pygame
import time
import random

# Initialize pygame
pygame.init()

# Screen dimensions
WIDTH, HEIGHT = 600, 400

# Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (213, 50, 80)
GREEN = (0, 255, 0)
BLUE = (50, 153, 213)

# Initialize screen
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Snake Game")

# Clock to control game speed
clock = pygame.time.Clock()

# Snake settings
SNAKE_BLOCK = 10
SNAKE_SPEED = 15

# Font styles
font_style = pygame.font.SysFont("bahnschrift", 25)
score_font = pygame.font.SysFont("comicsansms", 35)

# High score initialization
high_score = 0

def show_score(current_score, highest_score):
    value = score_font.render(f"Score: {current_score}  High Score: {highest_score}", True, GREEN)
    screen.blit(value, [10, 10])

def draw_snake(snake_block, snake_list):
    for block in snake_list:
        pygame.draw.rect(screen, BLUE, [block[0], block[1], snake_block, snake_block])

def message(msg, color):
    mesg = font_style.render(msg, True, color)
    screen.blit(mesg, [WIDTH / 6, HEIGHT / 3])

def game_loop():
    global high_score  # To modify the high score globally
    game_over = False
    game_close = False

    # Initial position of the snake
    x1, y1 = WIDTH / 2, HEIGHT / 2
    x1_change, y1_change = 0, 0

    snake_list = []
    snake_length = 1

    # Food position
    food_x = round(random.randrange(0, WIDTH - SNAKE_BLOCK) / 10.0) * 10.0
    food_y = round(random.randrange(0, HEIGHT - SNAKE_BLOCK) / 10.0) * 10.0

    while not game_over:
        while game_close:
            screen.fill(BLACK)
            message("You Lost! Press C-Play Again or Q-Quit", RED)
            show_score(snake_length - 1, high_score)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        game_loop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT and x1_change == 0:
                    x1_change, y1_change = -SNAKE_BLOCK, 0
                elif event.key == pygame.K_RIGHT and x1_change == 0:
                    x1_change, y1_change = SNAKE_BLOCK, 0
                elif event.key == pygame.K_UP and y1_change == 0:
                    x1_change, y1_change = 0, -SNAKE_BLOCK
                elif event.key == pygame.K_DOWN and y1_change == 0:
                    x1_change, y1_change = 0, SNAKE_BLOCK

        if x1 >= WIDTH or x1 < 0 or y1 >= HEIGHT or y1 < 0:
            game_close = True
        x1 += x1_change
        y1 += y1_change
        screen.fill(BLACK)

        pygame.draw.rect(screen, GREEN, [food_x, food_y, SNAKE_BLOCK, SNAKE_BLOCK])
        snake_head = [x1, y1]
        snake_list.append(snake_head)
        if len(snake_list) > snake_length:
            del snake_list[0]

        for block in snake_list[:-1]:
            if block == snake_head:
                game_close = True

        draw_snake(SNAKE_BLOCK, snake_list)
        show_score(snake_length - 1, high_score)

        pygame.display.update()

        if x1 == food_x and y1 == food_y:
            food_x = round(random.randrange(0, WIDTH - SNAKE_BLOCK) / 10.0) * 10.0
            food_y = round(random.randrange(0, HEIGHT - SNAKE_BLOCK) / 10.0) * 10.0
            snake_length += 1

        # Update the high score
        if snake_length - 1 > high_score:
            high_score = snake_length - 1

        clock.tick(SNAKE_SPEED)

    pygame.quit()
    quit()

# Run the game
game_loop()