Question

是否可以从pygame.key.get_pressed（）获取每个键的更改状态？例如，如果一个键已经启动但是已经关闭，那么将其设置为1，或者关闭但是向上，否则为0。

我的想法是使用类似下面的代码，但这不起作用，因为pygame.key.get_pressed（）不是可迭代的。

last_pressed = pressed
pressed = pygame.key.get_pressed()
changed = {key: pressed[key] != last_pressed[key] for key in pressed}

我打算用它来切换几个功能，而宁愿使用一种可读性的方法。

Answer 1

for key in pressed提供列表，而不是字典，因此0会为此列表中的值提供1或False（True或changed = [idx for idx in range(len(pressed)) if pressed[idx] != last_pressed[idx]] ）

只获取改变状态的密钥号码，您可以使用

zip()

或使用enumerate()和changed = [idx for idx, (a, b) in enumerate(zip(last_pressed, pressed)) if a != b]

import pygame

pygame.init()

screen = pygame.display.set_mode((300, 200))

pressed = pygame.key.get_pressed()

clock = pygame.time.Clock()
is_running = True

while is_running:

    for event in pygame.event.get():

        if event.type == pygame.QUIT:
            is_running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_ESCAPE:
                is_running = False

    last_pressed = pressed
    pressed = pygame.key.get_pressed()

    changed = [idx for idx in range(len(pressed)) if pressed[idx] != last_pressed[idx]]
    # or
    changed = [idx for idx, (a, b) in enumerate(zip(last_pressed, pressed)) if a != b]

    print(changed)

    clock.tick(25)

pygame.quit()

完整代码

KEYDOWN

与KEYUP和import pygame pygame.init() screen = pygame.display.set_mode((300, 200)) clock = pygame.time.Clock() is_running = True while is_running: changed = [] for event in pygame.event.get(): if event.type == pygame.QUIT: is_running = False elif event.type in (pygame.KEYDOWN, pygame.KEYUP): changed.append(event.key) print(changed) clock.tick(25) pygame.quit()

相同

True/False

获取所有密钥的changed = [pressed[idx] != last_pressed[idx] for idx in range(len(pressed))]：

zip()

或使用changed = [a != b for a, b in zip(last_pressed, pressed)]

char_id = tf.placeholder(dtype=tf.int32, shape=[None, word_max_len])

如果任何键已更改，Pygame会获取

1 个答案: