角色移动python（pygame）

Question

Im trying to call moveleft method but there is no movement. i pass the distance of the character and this should be updated but its not. Any ideas?

import pygame, sys
from pygame.locals import *

pygame.init()
pygame.font.init()


width,height=(842,595)
window = pygame.display.set_mode((width,height),0,32)
pygame.display.set_caption("game!")
speedX=3
movingX =0
clock= pygame.time.Clock()



man = pygame.image.load("man.png")
target= pygame.image.load("target.png")




x = 100
y = height-300




def name(name=""):
    myfont = pygame.font.SysFont(None, 15)
    label = myfont.render(name, 1, (255,255,0))
    result=window.blit(label, (100, 100))
    pygame.display.update()
    return name

def moveleft(distanceX):
    movingX =0
    speedX =0
    x=0
    while True:

        pygame.display.update()
        ticks=clock.tick(25)
        time_passedSeconds=ticks/1000.0

        distanceX = time_passeSeconds*speedX
        movingX+=distanceX
        for event in pygame.event.get():
            if event.type==QUIT:
                pygame.quit()
                sys.exit()
            elif event.type==KEYDOWN:
                if event.key ==K_LEFT:
                    x+=distanceX



        window.blit(man, (x,y))
    return movingX




name("werodo!")
moveleft(5)
pygame.display.update()

Answer 1

You draw the character at (x, y) . The only time you change x is here:

            elif event.type==KEYDOWN:
                if event.key ==K_LEFT:
                    x+=distanceX

What is distanceX ? It changes every iteration of the loop:

        distanceX = time_passeSeconds*speedX

Yet you only assign speedX once at the start of the function:

    speedX = 0

So, you're always moving by 0 . Change speedX to 50 and see what happens.