Snake_Game(moving_snake).py

import pygame
from pygame.locals import*
import time

SIZE = 40
class Snake:
    def __init__(self, surface,length):
        self.length = length
        self.parent_screen = surface
        self.block = pygame.image.load("Resources\Small_Block.png").convert()
        self.x=[SIZE]*length
        self.y=[SIZE]*length
        self.direction ="down"

    def move_left(self):
        self.direction = "left"

    def move_right(self):
        self.direction = "right"
    
    def move_up(self):
        self.direction = "up"
    
    def move_down(self):
        self.direction = "down"

    def draw(self):
        self.parent_screen.fill((110,110,5))
        for i in range(self.length):
            self.parent_screen.blit(self.block,(self.x[i],self.y[i]))
        pygame.display.flip()

    def walk(self):

        for i in range(self.length-1,0,-1):
            self.x[i]=self.x[i-1]
            self.y[i]=self.y[i-1]

        if self.direction == "up":
            self.y[0] -=40
        if self.direction == "down":
            self.y[0] +=40
        if self.direction == "left":
            self.x[0] -=40
        if self.direction == "right":
            self.x[0] +=40
        
        self.draw()

    

class Game:
    def __init__(self):
        pygame.init()
        self.surface = pygame.display.set_mode((800,800))
        self.snake = Snake(self.surface, 6)
        self.snake.draw()

    def run(self):
        running =True

        while running:
            for event in pygame.event.get():
                if event.type == KEYDOWN:
                    if event.key == K_ESCAPE:
                        running = False

                    if event.key == K_UP:
                        self.snake.move_up()

                    if event.key == K_DOWN:
                        self.snake.move_down()

                    if event.key == K_LEFT:
                        self.snake.move_left()

                    if event.key == K_RIGHT:
                        self.snake.move_right()


                elif event.type == QUIT:
                    running = False
                
            self.snake.walk()
            time.sleep(0.2)


if __name__ == '__main__':
    game = Game()
    game.run()