如何在pygame中移动ASCII字符？

Question

我在做一个类似流氓的ASCII游戏。我想打印@作为播放器并用箭头移动它。我试过的一切都不管用。你知道吗

import sys, pygame
pygame.init()
pygame.font.init()

white = (255, 255, 255) 
green = (0, 255, 0) 
blue = (0, 0, 128) 
black = (0, 0, 0)

playerposx = 356
playerposy = 254
playerpos = (playerposx, playerposy)
playervel = 16

win = pygame.display.set_mode((720,516))

pygame.display.flip()
pygame.display.set_caption('Tiles')
font = pygame.font.SysFont("timesnewroman", 16)
text = font.render('@', True, white, blue)
pygame.display.flip()


run = True
while run:
    pygame.time.delay(100)

    win.fill((0,0,0))
    win.blit(text, playerpos)
    pygame.display.update()

    keys = pygame.key.get_pressed()

    if keys[pygame.K_LEFT]:
        playerposx -= playervel
        print("LEFT")

    if keys[pygame.K_RIGHT]:
        playerposx += playervel
        print("RIGHT")

    if keys[pygame.K_UP]:
        playerposy -= playervel
        print("UP")

    if keys[pygame.K_DOWN]:
        playerposy += playervel
        print("DOWN")

    pygame.display.update()

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False


pygame.quit()

Answer 1

你很接近，但是你错过了更新playerpos：

playerpos = (playerposx, playerposy)
win.blit(text, playerpos)

注意，当按下按钮时，playerposx分别playerposy被改变，但是playerpos永远不会被更新

进一步注意，1^{}就足够了。移动被延迟，因为^{}在^{}之前被调用。由pygame.key.get_pressed()返回的状态在事件由pygame.event.get()处理时进行求值，因此可以从上一帧获得状态

改变主循环如下：

run = True
while run:

    pygame.time.delay(100)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    keys = pygame.key.get_pressed()

    if keys[pygame.K_LEFT]:
        playerposx -= playervel
        print("LEFT")
    if keys[pygame.K_RIGHT]:
        playerposx += playervel
        print("RIGHT")
    if keys[pygame.K_UP]:
        playerposy -= playervel
        print("UP")
    if keys[pygame.K_DOWN]:
        playerposy += playervel
        print("DOWN")

    playerpos = (playerposx, playerposy)

    win.fill((0,0,0))
    win.blit(text, playerpos)
    pygame.display.update()