event.key == K_r:

[Pedroski55]

I am new to pygame, so I am looking at the docs here and trying each bit out in Idle.

My little function rect11() works OK, but it doesn't refresh when I press the right arrow key.

I presume K_r means the right arrow key, but nothing happens when I press the right arrow key.

Do you know why??

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def rect11():     pygame.init()     width = 600     height = 600     SIZE = (500, 200)       RED = (255, 0, 0)     GREEN = (0, 255, 0)     BLUE = (0, 0, 255)       YELLOW = (255, 255, 0)     MAGENTA = (255, 0, 255)     CYAN = (0, 255, 255)       BLACK = (0, 0, 0)     GRAY = (150, 150, 150)     WHITE = (255, 255, 255)       def random_point():         x = randint(0, width)         y = randint(0, height)         return (x, y)       def random_rects(n):         rects = []         for i in range(n):             r = Rect(random_point(), (20, 20))             rects.append(r)         return rects       screen = pygame.display.set_mode((width, height))           running = True           rect = Rect(100, 50, 200, 80)           n = 50     rects = random_rects(n)       while running:         for event in pygame.event.get():             if event.type == QUIT:                 running = False                           if event.type == KEYDOWN:                 if event.key == K_r:                     rects = random_rects(n)                  screen.fill(GRAY)         pygame.draw.rect(screen, GREEN, rect, 1)           for r in rects:             if rect.colliderect(r):                 pygame.draw.rect(screen, RED, r, 2)             else:                 pygame.draw.rect(screen, BLUE, r, 1)                   pygame.display.flip()         pygame.quit()

[metulburr]

I presume K_r means the right arrow key, but nothing happens when I press the right arrow key.

Check out the pygame documentation. It is a go to must when your programming in pygame. Everything starts with K_ as it is keyboard. K_r is "r". K_RIGHT is right arrow.


As a side note: I think it is better and more adaptable to organize things in classes as opposed to nested functions.

[Pedroski55]

Thanks, in the cold light of morning that was very clear.

All the other examples used mainly the arrow keys, I suppose I just assumed this would too!!

Bad assumption!