Pygame Error: video system not initialized (more info in description)

Question

I get same error as this person: pygame.error: video system not initialized, but I have called pg.init().

Two unexpected things happened,

link didnt appear (the background did, and they're in the same directory
after i close the pygame window i get the error mentioned in title

# -*- coding: utf-8 -*-

import pygame as pg

pg.init()

overflate = pg.display.set_mode((500,350))

pg.display.set_caption("Spill")
bg = pg.image.load("castle.jpg")
link = pg.image.load("link.png")
linkx = 0
linky = 0

overflate.blit(link,(linkx, linky))
pg.display.update()

overflate.blit(bg,(0, 0))
pg.display.update()

while True:
    for e in pg.event.get():
        if e.type == pg.K_w:
                spillerx+=10
        if e.type == pg.QUIT:
            pg.quit()
    pg.display.update()

You need to break out of your loop after receiving the QUIT event. And the "link" image did not appear because you drew the "bg" image over it. — jasonharper, Dec 03 '20 at 16:49
That worked, thanks. How do I reduce the size of the link picture? — Mikkerix, Dec 03 '20 at 17:44

score 0 · Answer 1 · answered Dec 28 '20 at 19:12

You have to blit the image after drawing the background:

run = True
while run:
    for e in pg.event.get():
        if e.type == pg.K_w:
            spillerx+=10
        if e.type == pg.QUIT:
            run = False
    
    overflate.blit(bg,(0, 0))
    overflate.blit(link,(linkx, linky))
    pg.display.update()

pg.quit()

The typical PyGame application loop has to:

handle the events by either pygame.event.pump() or pygame.event.get().
update the game states and positions of objects dependent on the input events and time (respectively frames)
clear the entire display or draw the background
draw the entire scene (blit all the objects)
update the display by either pygame.display.update() or pygame.display.flip()

Pygame Error: video system not initialized (more info in description)

1 Answers1