9 examples of 'python snake game' in Python

119
def run_game():
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    # this function runs the game
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    snake = Snake()
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    apple = Apple()
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    while True:
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        for event in pygame.event.get():
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            if event.type == pygame.QUIT:
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                pygame.quit()
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                sys.exit()
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            elif event.type == pygame.KEYDOWN:
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                if event.key == pygame.K_ESCAPE:
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                    pygame.quit()
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                    sys.exit()
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                # don't move in the opposite direction
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                elif event.key == pygame.K_LEFT and snake.dir != 'r':
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                    snake.dir = 'l'
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                elif event.key == pygame.K_RIGHT and snake.dir != 'l':
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                    snake.dir = 'r'
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                elif event.key == pygame.K_UP and snake.dir != 'd':
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                    snake.dir = 'u'
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                elif event.key == pygame.K_DOWN and snake.dir != 'u':
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                    snake.dir = 'd'
141
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        if snake.eat(apple):
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            # make a new apple
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            apple = Apple()
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        else:
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            # remove the last segment from the snake (it stayed the same size)
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            del snake.coords[-1]
148
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        snake.move()
150
        if snake.hit():
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            # dead - play the hit sound and return the score
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            snake.hit_snd.play()
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            return len(snake.coords) - 3
154
155
        # Update screen
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        screen.fill(BGCOLOR)
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        draw_grid()
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        draw_score(len(snake.coords) - 3)
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        snake.draw()
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        apple.draw()
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        pygame.display.flip()
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        clock.tick(FPS)

110
def start_game():
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    global s
112
    create_block()
113
    s = create_snake()
114
    # Reaction on keypress
115
    c.bind("", s.change_direction)
116
    main()

172
def restart(self,event):
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    self.canvas.delete("food","snake","text")
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    self.canvas.unbind('')
175
176
    # to initialize the snake in the range of (191,191,341,341)                
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    r=random.randrange(191,191+15*10,self.step)
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    self.snakeX=[r,r+self.step,r+self.step*2]
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    self.snakeY=[r,r,r]
180
    
181
    # to initialize the moving direction
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    self.snakeDirection = 'left'
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    self.snakeMove = [-1,0]
184
    
185
    # reset the score to zero 
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    self.gamescore=-10
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    self.draw_score() 
188
    
189
    # to initialize the game (food and snake)
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    self.draw_food()
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    self.draw_snake()
192
    
193
    # to play the game
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    self.play()

105
def add_apple(self):
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    self.apples.add(self.emptygrid())

56
def draw(self, scr):
57
    scr.draw.set(self.pos)
58
    if self.remove:
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        for pos in self.remove:
60
            scr.draw.reset(pos)
61
        self.remove[:] = []

78
def gameOver(self):
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    self._gameOver = True
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    self._gameOverCount = 0
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    self._levelUp = True
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    self._level = 1
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    self.setSpeed("move", 4)
84
    self._lives = 4

125
def down(self):
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    self.play(3)

99
def move(self):
100
    """
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    移动snake身体
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    """
103
    if self.direction == Direction.UP:
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        self.snake_body[0] = (self.snake_body[0][0], self.snake_body[0][1] - self.cube_width)
105
106
    elif self.direction == Direction.DOWN:
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        self.snake_body[0] = (self.snake_body[0][0], self.snake_body[0][1] + self.cube_width)
108
109
    # top += cube_width
110
    elif self.direction == Direction.LEFT:
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        self.snake_body[0] = (self.snake_body[0][0] - self.cube_width, self.snake_body[0][1])
113
114
    # left -= cube_width
115
    elif self.direction == Direction.RIGHT:
116
        self.snake_body[0] = (self.snake_body[0][0] + self.cube_width, self.snake_body[0][1])

66
def draw(self):
67
  self.shape.draw()