Pygame 渲染我的代码仅几秒钟后就崩溃了

Question

出于某种原因，此程序在运行仅一秒左右后就崩溃了。有趣的是，更改 turnAngle 或 fps 会影响它在崩溃前持续的时间。它抛出的错误是 ValueError: subsurface rectangle outside of surface area 第 29 行/第 9 行。有什么想法吗？

import pygame as pg


def rot_center(image, angle):
    orig_rect = image.get_rect()
    rot_image = pg.transform.rotate(image, angle)
    rot_rect = orig_rect.copy()
    rot_rect.center = rot_image.get_rect().center
    rot_image = rot_image.subsurface(rot_rect).copy()
    return rot_image


pg.init()

mainDisplay = pg.display.set_mode([600, 376])

imgSplashBG = pg.image.load('guiAssets/splash/BG.png')
imgSplashFG = pg.image.load('guiAssets/splash/FG.png')
imgSplashRedCircle = pg.image.load('guiAssets/splash/redCircle.png')
imgSplashGreenCircle = pg.image.load('guiAssets/splash/greenCircle.png')

turnAngle = 10

frame = 0
clock = pg.time.Clock()
crashed = False
while not crashed:
    frame += 1
    mainDisplay.blit(imgSplashBG, (0, 0))
    mainDisplay.blit(rot_center(imgSplashGreenCircle, ((frame % 360) * 10)), (-189, -189))
    mainDisplay.blit(rot_center(imgSplashRedCircle, ((frame % 360) * 10)), (453, 230))
    mainDisplay.blit(imgSplashFG, (0, 0))
    pg.display.flip()
    clock.tick(30)

Answer 1

你能试着在你的循环之前添加一个时间变量吗'while not'

像这样：

.....
frame = 0
clock = pg.time.Clock()
time = pg.time.get_ticks()      #here
crashed = False
while not .....

Answer 2

见How do I rotate an image around its center using PyGame?

此外，您还必须处理应用程序循环中的事件。见 pygame.event.get() respectively pygame.event.pump():

For each frame of your game, you will need to make some sort of call to the event queue. This ensures your program can internally interact with the rest of the operating system.

例如：

import pygame as pg

def rot_center(image, angle, center):
    rotated_image = pg.transform.rotate(image, angle)
    new_rect = rotated_image.get_rect(center = center)
    return rotated_image, new_rect

pg.init()
mainDisplay = pg.display.set_mode([600, 376])

imgSplashBG = pg.image.load('guiAssets/splash/BG.png')
imgSplashFG = pg.image.load('guiAssets/splash/FG.png')
imgSplashRedCircle = pg.image.load('guiAssets/splash/redCircle.png')
imgSplashGreenCircle = pg.image.load('guiAssets/splash/greenCircle.png')

turnAngle = 10
frame = 0

clock = pg.time.Clock()
run = True
crashed = False
while not crashed and run:

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

    frame += 1
    angle = (frame*turnAngle) % 360
    centerGreen = (189, 189)
    centerRed = (453, 230)

    mainDisplay.blit(imgSplashBG, (0, 0))
    mainDisplay.blit( *rot_center(imgSplashGreenCircle, angle, centerGreen) )
    mainDisplay.blit( *rot_center(imgSplashRedCircle, angle,centerRed) )
    mainDisplay.blit(imgSplashFG, (0, 0))
    pg.display.flip()
    clock.tick(30)

pygame.quit()

Pygame 渲染我的代码仅几秒钟后就崩溃了

Pygame crashes after only a few seconds of rendering my code

python

crash

pygame