python滑动网页左右移动 python物体左右移动

一种方法是创建一个队列来跟踪上次按下的按钮。如果我们按右箭头键，我们会把速度放在列表的第一位，如果我们再按左箭头键，我们会把新的速度放在列表的第一位。所以最后按下的按钮总是列表中的第一个。然后我们只需在释放按钮时将其从列表中移除。在import pygame

pygame.init()
screen = pygame.display.set_mode((720, 480))
clock = pygame.time.Clock()
FPS = 30
rect = pygame.Rect((350, 220), (32, 32)) # Often used to track the position of an object in pygame.
image = pygame.Surface((32, 32)) # Images are Surfaces, so here I create an 'image' from scratch since I don't have your image.
image.fill(pygame.Color('white')) # I fill the image with a white color.
velocity = [0, 0] # This is the current velocity.
speed = 200 # This is the speed the player will move in (pixels per second).
dx = [] # This will be our queue. It'll keep track of the horizontal movement.
while True:
dt = clock.tick(FPS) / 1000.0 # This will give me the time in seconds between each loop.
for event in pygame.event.get():
if event.type == pygame.QUIT:
raise SystemExit
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
dx.insert(0, -speed)
elif event.key == pygame.K_RIGHT:
dx.insert(0, speed)
elif event.type == pygame.KEYUP:
if event.key == pygame.K_LEFT:
dx.remove(-speed)
elif event.key == pygame.K_RIGHT:
dx.remove(speed)
if dx: # If there are elements in the list.
rect.x += dx[0] * dt
screen.fill((0, 0, 0))
screen.blit(image, rect)
pygame.display.update()
# print dx # Uncomment to see what's happening.

当然，你应该把所有的东西都放在整洁的函数中，也许还可以创建一个Player类。在