Create multiple Pygame istance

Question

I'm trying to create a genetic algorithm that learns how to play Tetris.

But is there a way to creare multiple istance of the game? So that i can create like 200 tetris, wait until all die and do operations instead of creating one instance, wait for the AI to lose, close the game, create a new one and so on?

I have tried with :

import logging
import threading
import time

from game import Game


def thread_function():
    Game()

if __name__ == "__main__":
    x = threading.Thread(target=thread_function, args=())
    x.start()
    y = threading.Thread(target=thread_function, args=())
    y.start()
    z = threading.Thread(target=thread_function, args=())
    z.start()

But the result is not 3 istances of the game, but only 1 with weirds thing going on. If i use just one thread everything works fine.

No, all the variables that i'm using are attributes of the class — Fanto
– Fanto, Commented Mar 3, 2021 at 16:33

Fanto · Accepted Answer · 2021-03-03 16:55:05Z

0

I have actually fixed the problem.

Instead of creating a single process and multithread, you have to create simple multi processes.

I have changed the code like this to get the points for each process created when terminated.

import multiprocessing
from multiprocessing import Process
from game import Game


def thread_function(procnum, return_dict):
    return_dict[procnum] = Game().end_game()

processes = []

if __name__ == "__main__":
    manager = multiprocessing.Manager()
    return_dict = manager.dict()

    for m in range(1, 3):
        p = Process(target=thread_function, args=(m, return_dict,))
        p.start()
        processes.append(p)

    for p in processes:
        p.join()

    print(return_dict.values())

answered Mar 3, 2021 at 16:55

Fanto

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Rabbid76 · Accepted Answer · 2021-03-11 08:39:41Z

0

But is there a way to create multiple instance of the game?

No, there is no way. See pygame.display module:

This module offers control over the pygame display. Pygame has a single display Surface that is either contained in a window or runs full screen. Once you create the display you treat it as a regular Surface. [...]

However, you don't need multiple windows at all. You can run the game logic multiple times concurrently. But display only one of them.

edited Mar 11, 2021 at 8:39

answered Mar 3, 2021 at 16:55

Rabbid76

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