当我按下一个键时，pygame内部发生了什么？何时使用pygame.event == KEYDOWN

当我按下一个键时，pygame内部发生了什么？何时使用pygame.event == KEYDOWN

pygame.key.get_pressed()

返回包含键当前状态的列表。按住某个键时，该键的状态为

True

，否则为

False

。使用

pygame.key.get_pressed()

评估是否一个键被连续按下。

while True:    pressed_key= pygame.key.get_pressed()    if pressed_key[pygame.K_UP]:        # the pre in this condition is executed as long UP is hold down         # [...]

当键的状态更改时，键盘事件（请参阅pygame.event模块）仅发生一次。

KEYDOWN

每次按下一个键，事件就会发生一次。

KEYUP

每次释放钥匙时发生一次。

while True:    for event in pygame.event.get():        if event.type == pygame.KEYDOWN: if event.key == pygame.K_ESCAPE:     # The following pre is executed once, every time when ESC is pressed.     # [...]        if event.type == pygame.KEYUP: if event.key == pygame.K_ESCAPE:     # The following pre is executed once, every time when ESC is released.     # [...]