问题描述
我的第一个游戏,更准确地说,它的初始外观(没有特别漂亮的图标、头像、背景和对象)几乎准备好了,并且完美地开始,直到我想添加一个开始菜单,在其中可以更改游戏参数,事实上,启动它的按钮“开始”。但是,经过一些更改以使菜单出现后,结果发现我在 int game() 和黑屏方面遇到了一些问题。我把之前的修改删掉了,尝试在没有菜单的情况下启动游戏,原来是这样,但是黑屏还是跟着我,我看到了这个东西:
Traceback (most recent call last):
File "C:\Users\olive\AppData\Local\Temp\main.py\debug.py",line 40,in <module>
keys = pygame.key.get_pressed()
pygame.error: video system not initialized
厌倦了在国外和本地论坛上寻找答案,我决定联系 stackover 的居民。我真的希望得到你的帮助。实际上,这里是代码本身(我尽可能对其进行了压缩):
Import pygame,sys
pygame.init()
pygame.font.init()
window = pygame.display.set_mode((1000,690))
screen = pygame.Surface((1000,690))
player = pygame.Surface((60,60))
zet = pygame.Surface((60,60))
arrow = pygame.Surface((20,40))
count = 0
a_x = 1000
a_y = 1000
strike = False
z_x = 0
z_y = 0
x_p = 0
y_p = 640
z_right = True
done = False
while done == False:
for e in pygame.event.get():
if e.type == pygame.QUIT:
pygame.quit()
done = True
keys = pygame.key.get_pressed() #ошибка здесь
if keys[pygame.K_w]:
y_p -= 5
if keys[pygame.K_s]:
y_p += 5
if keys[pygame.K_a]:
x_p -= 5
if keys[pygame.K_d]:
x_p += 5
if e.type == pygame.KEYDOWN and e.key == pygame.K_SPACE:
if strike == False:
strike = True
a_x = x_p
a_y = y_p - 40
if strike:
a_y -= 1.5
if a_y < 0:
strike = False
a_y = 1000
a_x = 1000
if inter(a_x,a_y,z_x,z_y,20,40):
count += 1
strike = False
a_y = 1000
a_x = 1000
if z_right:
z_x += 1
if z_x > 960:
z_x -=1
z_right = False
else:
z_x -=1
if z_x < 0:
z_x += 1
z_right = True
string = myfont.render('Счёт: '+str(count),(255,0))
screen.fill((0,225,0))
screen.blit(string,(0,430))
screen.blit(arrow,(a_x,a_y))
screen.blit(zet,(z_x,z_y))
screen.blit(player,(x_p,y_p))
window.blit(screen,0))
pygame.display.update()
pygame.quit()
exit()
顺便说一下,我不确定我是否看过论坛上的所有问题和我能看到的答案,所以我可能错过了一些解决方案。所以,我不否认我的问题可能与本站其他人的问题相似,请勿将其视为复制粘贴或泛滥。
解决方法
这整个部分可以更改
keys = pygame.key.get_pressed() #ошибка здесь
if keys[pygame.K_w]:
y_p -= 5
if keys[pygame.K_s]:
y_p += 5
if keys[pygame.K_a]:
x_p -= 5
if keys[pygame.K_d]:
x_p += 5
if e.type == pygame.KEYDOWN and e.key == pygame.K_SPACE:
# some code
到
if e.type == pygame.KEYDOWN:
if e.key == pygame.K_SPACE:
# some code
if e.key == pygame.K_w:
y_p -= 5
if e.key == pygame.K_s:
y_p += 5
if e.key == pygame.K_a:
x_p -= 5
if e.key == pygame.K_d:
x_p += 5
您可以对代码进行大量更改
Import pygame,sys
# to
import pygame,sys
# few variables
a_x = 1000
a_y = 1000
# to
a_x = a_y = 1000
# next in the main loop
while done == False:
# this is not good
while not done:
# this is better practice
# and lastly
if e.type == pygame.QUIT:
pygame.quit()
done = True
# you don't have to do pygame.quit inside the main loop becoz you already called it outside
pygame.quit()
exit()
# also change exit() to
sys.exit()