PyGame Basics

The Fun

Now to make the game actually fun and challenging, we need to introduce some levelling up, or increased difficulty as we play.

There are multitude of ways to achieve this, feel free to experiment. Here, we can just speed up the ball by checking the score.

Level up

First let's set score member function to keep track of the number of successful hits:


            class Game():
    def __init__(self):
        pygame.init() # initialise pygame libraries
        self.size = WIDTH, HEIGHT
        self.display = pygame.display.set_mode(self.size)
        self.disp_surf = self.init_display()
        self.running = True if self.disp_surf else False
        self.font = pygame.font.Font(pygame.font.get_default_font(), 36)
        self.ball = Ball()
        self.hand = Hand()
        self.allsprites = pygame.sprite.RenderPlain((self.ball, self.hand))
        self.sound_hit = pygame.mixer.Sound("thump.wav")
        self.sound_missed = pygame.mixer.Sound("swish.wav")
        self.score = 0

And increment the score with every successful hit:


                def check_events(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                self.running = False
            elif event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
                self.running = False
            elif event.type == pygame.MOUSEBUTTONDOWN:
                if self.hand.hit(self.ball):
                    self.ball.hit()
                    self.sound_hit.play()
                    self.score += 1
                    if self.score % 10 == 0:
                        self.ball.level_up()
                else:
                    self.sound_missed.play()
            elif event.type == pygame.MOUSEBUTTONUP:
                self.hand.unhit()
        return

And we add a level up function to our Ball object.


            class Ball(pygame.sprite.Sprite):
    """Bounce a ball around the screen. It can spin when it is hit."""
 . 
 . 
 . 
    def level_up(self):
        self.speed = [2*x for x in self.speed]

Score

We should let the user know their score.

Let's edit out text:


                def render(self):
        '''Render surface'''
        # background
        self.disp_surf.fill(BLACK)
        # draw text
        text = "Spin the Ball : %s" % self.score
        self.draw_text(text, GREEN, (int(WIDTH / 2), int(HEIGHT / 2)))
        # Blit everything to screen
        self.display.blit(self.disp_surf, (0,0))

        # draw ball
        self.allsprites.update()
        self.allsprites.draw(self.display)

        # update display
        pygame.display.flip()
        return

And now we have a simple !! Do drop me a note 📧 on the fun games you create, I'd love to hear about them !!