snake_game_using_python/Snake_Game_using_python.py at main · jsgautam/snake_game_using_python · GitHub

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import pygame
import random

x = pygame.init()
# Colors
white = (255, 255, 255)
red = (255, 0, 0)
black = (0, 0, 0)
# print(x)
# Creating Window
speed = 5
screen_width = 1200
screen_height = 600
screen_caption = "Snake Game"
gameWindow = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption(screen_caption)
pygame.display.update()
clock = pygame.time.Clock()
font = pygame.font.SysFont(None, 55)


def text_screen(text, color, x, y):
    screen_text = font.render(text, True, color)
    gameWindow.blit(screen_text, [x, y])


# Creating Game loop
def plot_snake(gameWindow, black1, snk_list, Snake_size1):
    for x, y in snk_list:
        pygame.draw.rect(gameWindow, black1, [x, y, Snake_size1, Snake_size1])


def welcome():
    exit_game = False
    while not exit_game:
        gameWindow.fill(white)
        text_screen("Welcome To Snake Game ", black, 300, 275)

        text_screen("Press Space Bar For Continue  ", black, 300, 320)
        for event in pygame.event.get():
            # print(event)
            if event.type == pygame.QUIT:
                exit_game = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_SPACE:
                    gameloop()

        pygame.display.update()
        clock.tick(60)


def gameloop():
    # Game specific Variable
    exit_game = False
    game_over = False
    score = 0
    Snake_x = 45
    Snake_y = 55
    Snake_size = 10
    velocity_x = 0
    velocity_y = 0
    fps = 30  # means frame per secound
    food_x = random.randint(0, screen_width / 2)
    food_y = random.randint(0, screen_height / 2)

    snk_length = 1
    snk_list = []
    with open("highscore.txt", "r") as f:
        highscore = f.read()

    while not exit_game:
        if game_over:

            with open("highscore.txt", "w") as f:
                f.write(str(highscore))
            gameWindow.fill(white)

            text_screen("Game Over! Press Enter To Continue ", red, 300, 280)
            for event in pygame.event.get():
                # print(event)
                if event.type == pygame.QUIT:
                    exit_game = True
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_RETURN:
                        welcome()

        else:

            for event in pygame.event.get():
                # print(event)
                if event.type == pygame.QUIT:
                    exit_game = True
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_RIGHT:
                        velocity_x = speed
                        velocity_y = 0
                    if event.key == pygame.K_LEFT:
                        velocity_x = -speed
                        velocity_y = 0
                    if event.key == pygame.K_UP:
                        velocity_y = -speed
                        velocity_x = 0
                    if event.key == pygame.K_DOWN:
                        velocity_y = speed
                        velocity_x = 0
                    if event.key == pygame.K_q:
                        score += 10

            Snake_x += velocity_x
            Snake_y += velocity_y
            if abs(food_x - Snake_x) < 8 and abs(food_y - Snake_y) < 8:
                score = score + 10
                # print("score=",score)

                food_x = random.randint(0, screen_width / 2)
                food_y = random.randint(0, screen_height / 2)
                snk_length += 5
                if score > int(highscore):
                    highscore = score
            gameWindow.fill(white)
            text_screen("Score: " + str(score) + "  High Score:" + str(highscore), red, 5, 5)
            pygame.draw.rect(gameWindow, red, [food_x, food_y, Snake_size, Snake_size])

            head = []
            head.append(Snake_x)
            head.append(Snake_y)
            snk_list.append(head)
            # print(snk_list)
            if len(snk_list) > snk_length:
                del snk_list[0]

            if head in snk_list[:-1]:
                game_over = True
            # pygame.draw.rect(gameWindow,black,[Snake_x,Snake_y,Snake_size,Snake_size])
            if (Snake_x < 0) or (Snake_y < 0) or (Snake_x > screen_width) or (Snake_y > screen_height):
                game_over = True
            plot_snake(gameWindow, black, snk_list, Snake_size)
        pygame.display.update()
        clock.tick(fps)

    pygame.quit()
    quit()


# gameloop()
welcome()