新的pygame，画了一个矩形，为什么我不能移动它？

Question

This is my code:

import pygame, sys
from pygame.locals import *

pygame.init()

window = pygame.display.set_mode((800, 600))
pygame.display.set_caption('window')

black = (0,0,0)
white = (255, 255, 255)

logo = pygame.image.load('logo.png').convert_alpha()

clock = pygame.time.Clock()

# Sprites
m1 = pygame.image.load('m1.png').convert_alpha()
m2 = pygame.image.load('m2.png').convert_alpha()


mci = 1

x, y = 0, 0

run = True

while run:
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()

        if event.type == pygame.KEYDOWN:
            if event.type == pygame.K_LEFT:
                x -= 10

            if event.type == pygame.K_RIGHT:
                x += 10

            if event.type == pygame.K_UP:
                y -= 10

            if event.type == pygame.K_DOWN:
                y += 10




        window.fill(white)

        pygame.draw.rect(window, black,(x,y, 50, 50))

        pygame.display.flip()

        clock.tick(10)

Everything shows up, but I can't move the rectangle with my arrow keys, and I always get an error after I quit out of it, help.. Thanks in advance! PS I'm obviously copying from a tutorial, but i'm not sure what I've done wrong?

Answer 1

As you worked out, you need to use event.key == ... . You probably also want to watch the nesting of your loop, currently you have:

while running:
    for event in list_of_events:
        process_event
        draw_to_screen
        wait_a_while

This caused a problem in another question ( https://stackoverflow.com/a/13866804/2372604 ). What you probably want is something more like:

while running:
    for event in list_of_events:
        process_event

    draw_to_screen
    wait_a_while

You might also want to change pygame.quit(); sys.exit() pygame.quit(); sys.exit() to run = false and then add pygame.quit() at the end of the program.

Answer 2

我写的event.type而不是event.key的错误。