"red square moving" on screen: example during 2026-4-22 livestream

gistfile1.txt

import pygame


tela = pygame.display.set_mode((800, 600))

class Quadrado:
    larg = 50
    alt = 50
    cor = (255, 0, 0)
    fundo = (255, 255, 255)
    def __init__(self, superficie, x=None, y=None):
        self.superficie = superficie
        if x is None:
            x, y = 0, 0
        self.x = x
        self.y = y
    def update(self):

        pygame.draw.rect(self.superficie, self.cor, (self.x, self.y, self.larg, self.alt))
    @property
    def x(self):
        return self._x
    @x.setter
    def x(self, valor):
        if 0 <= valor <= self.superficie.width - self.larg:
            self._x = valor
    @property
    def y(self):
        return self._y
    @y.setter
    def y(self, valor):
        if 0 <= valor <= self.superficie.height - self.alt:
            self._y = valor


q = Quadrado(tela)
q1 = Quadrado(tela)

q1.cor = (0, 0, 255)
def update(superficie, *objetos, fundo=(255,255,255) ):
    superficie.fill(fundo)
    for objeto in objetos:
        objeto.update()
    pygame.display.update()


def principal():
    while True:
        teclas = pygame.key.get_pressed()
        if teclas[pygame.K_UP]:
            q.y -= 10
        if teclas[pygame.K_DOWN]:
            q.y += 10
        if teclas[pygame.K_RIGHT]:
            q.x += 10
        if teclas[pygame.K_LEFT]:
            q.x -= 10
        update(tela, q, q1)
        pygame.time.delay(30)
        pygame.event.pump()


if __name__ == "__main__":
    principal()