Why Is My Pygame Display Not Responding While Waiting for Input

Why is my pygame display not responding while waiting for input?

You cannot use input in the application loop. input waits for an input. While the system is waiting for input, the application loop will halt and the game will not respond.

Use the KEYDOWN event instead of input:

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

        if event.type == pygame.KEYDOWN:
            if pygame.key == pygame.K_1:
                # [...]
            if pygame.key == pygame.K_2:
                # [...]

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Another option is to get the input in a separate thread.

Minimal example:

import pygame
import threading

pygame.init()
window = pygame.display.set_mode((400, 400))
clock = pygame.time.Clock()

color = "red"
def get_input():
    global color
    color = input('enter color (e.g. blue): ')

input_thread = threading.Thread(target=get_input)
input_thread.start()

run = True
while run:
    clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False          

    window_center = window.get_rect().center
    window.fill(0)
    pygame.draw.circle(window, color, window_center, 100)
    pygame.display.flip()

pygame.quit()
exit()

Pygame program stops responding, giving no error

When asking for input the program stops and wait until the user types something in. When the program stops it cannot handle events which makes your os to believe the program has crashed. So when using pygame you cannot have console input (unless you create processes).

If all you needed was a delay, you could use a while-loop

def wait(time):
    clock = pygame.time.Clock()

    while time > 0:
        dt = clock.tick(30) / 1000  # Takes the time between each loop and convert to seconds.
        time -= dt
        pygame.event.pump()  # Let's pygame handle internal actions so the os don't think it has crashed.

If you want the user to decide how long to wait, you could check for user events

def wait_user_response():
    clock = pygame.time.Clock()
    waiting = True

    while waiting:
        clock.tick(30)

        for event in pygame.event.get():
            if event.type == pygame.KEYDOWN:  # Or whatever event you're waiting for.    
                waiting = False

There are of course other better ways to go about, but since I don't know how your program functions, this was all I could provide.

Pygame window not responding after a few seconds

Call pygame.event.get() at the beginning of the while loop.

Why does the pygame window become unresponsive?

Unfortunately, this is just a nature of pygame. When you ask for an input, the program stops and waits for the user to input something, preventing the pygame.diplay.flip() from occuring.

There is two ways I can think of to fix this. Using, threads, one for powershell (terminal) and one for pygame should work, however I'm not familiar with that at all, so you would need to research for yourself.

A different solution is to listen for user input instead of using terminal prompts

#Game loop
quit = False
while quit == False:

    for e in pygame.event.get():

        if e.type == pygame.KEYDOWN:
            if e.key == pygame.K_q:
                quit = True
            if e.key == pygame.K_n:
                win.fill((60, 55, 100))  #navy

pygame.display.update()

Pygame window crashing on run

1. Every pygame program needs pygame.init() at the beginning
2. Use pygame.display.update() only once at the end of the program
3. Your program freezes because input() breaks the main loop of your program

Pygame start file:

import pygame
from sys import exit

pygame.init()
screen = pygame.display.set_mode((WIDTH, HEIGHT))
clock = pygame.time.Clock()

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

    #Your code...

    pygame.display.update()
    clock.tick(FPS)

You can solve this by adding an input box to the pygame window: https://stackoverflow.com/a/46390412/15500012

I hope it will help you, Adam

Pygame Window not Responding after few seconds

Your game is not responding, because you ask for an input inside the application loop. input stops the application loop and waits for input to be confirmed. If you stop the application loop, the window stops responding. Use the KEYDOWN event to get an input in PyGame (see pygame.event):

for event in pygame.event.get():
    # [...]

    if event.type == pygame.KEYDOWN:
        guessed.append(event.unicode)

guessed has to be initialized before the application loop. Don't reset it in the loop:

import pygame
pygame.init()

running  = True

window_width = 600
window_height = 600
window = pygame.display.set_mode((window_width, window_height))

clock = pygame.time.Clock()

word = "something"
guessed = []

answer = ""
for c in word:
    answer += c + " " if c in guessed else "_ "
print(answer)

while running:
    dt = clock.tick(60)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN:
            guessed.append(event.unicode)
            answer = ""
            for c in word:
                answer += c + " " if c in guessed else "_ "
            print(answer)
   
pygame.quit()

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