如果我在游戏中连续按两次键，我想让角色跑得更快

Question

这是我写的代码的一部分

enter code here
    import pygame
    from pygame.locals import QUIT, KEYDOWN, KEYUP,\
        K_LEFT, K_RIGHT, K_DOWN, K_SPACE, K_UP
    pygame.init()
    pygame.key.set_repeat(30, 30)
    while True:
        to_x1 = 0
        for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                    sys.quit()
                keys = pygame.key.get_pressed()
                if keys[pygame.K_LEFT]:
                    to_x1 = -5
                if keys[pygame.K_RIGHT]:
                    to_x1 = 5
        CHARIC_1.xpos1 = CHARIC_1.xpos1 + to_x1

CHARIC_1.xpos1是角色的x坐标。 我想让我的角色在我快速按两次左右键时跑得更快。 我一辈子都不知道。如果你知道怎么做，我想让你告诉我

Answer 1

您必须使用键盘事件KEYDOWN（请参见^{}），而不是^{}。使用^{}获取自调用pygame.init()以来的毫秒数。存储按键的时间。如果在一定时间内按下按钮两次，则会增加速度：

key_time = 0
fast_key_time = 500 # 0.5 seconds

while True:
    current_time = pygame.time.get_ticks()

    # [...]

    for event in pygame.event.get():
        # [...]

        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                if to_x1 == -5 and current_time < key_time + fast_key_time:
                    to_x1 = -10
                else:
                    to_x1 = -5
                key_time = current_time
            if event.key == pygame.K_RIGHT:
                if to_x1 == 5 and current_time < key_time + fast_key_time:
                    to_x1 = 10
                else:
                    to_x1 = 5
                key_time = current_time

    CHARIC_1.xpos1 = CHARIC_1.xpos1 + to_x1

    # [...]

---

最简单的例子：

import pygame

pygame.init()
window = pygame.display.set_mode((500, 500))
clock = pygame.time.Clock()

rect = pygame.Rect(0, 0, 20, 20)
rect.center = window.get_rect().center

to_x1 = 0
key_time = 0
fast_key_time = 500 # 0.5 seconds

run = True
while run:
    current_time = pygame.time.get_ticks()
    clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                if to_x1 == -5 and current_time < key_time + fast_key_time:
                    to_x1 = -10
                else:
                    to_x1 = -5
                key_time = current_time
            if event.key == pygame.K_RIGHT:
                if to_x1 == 5 and current_time < key_time + fast_key_time:
                    to_x1 = 10
                else:
                    to_x1 = 5
                key_time = current_time

    rect.x += to_x1
        
    rect.centerx = rect.centerx % window.get_width()
    rect.centery = rect.centery % window.get_height()

    window.fill(0)
    pygame.draw.rect(window, (255, 0, 0), rect)
    pygame.display.flip()