我的程序不会在 Pygame 中绘制椭圆

Question

I'm pretty new to python and pygame and I can't seem to draw a ellipse. Please help!

I'm running this in python3.10.

Here is all of the source code below.

My only suspicion is this code is in python2 cause I used to code in python2 and then I stopped so python3 is new to me.

Whoever fixes it thank you so much!!

    from pygame import *
    import pygame
    
    init()

    S0 = 640
    S1 = 480

    screen = display.set_mode((S0, S1))
    display.set_caption("Zero-Player-Game")

    clock = pygame.time.Clock()

    x = 10
    y = 10

   dx = 1
   dy = 2

   Black = (0, 0, 0)
   White = (255, 255, 255)

   p_size = 50

   end = False

   while not end:
        for e in event.get():
            if e.type == QUIT:
                end = True
            x += dx
            y += dy
            if y < 0 or y > S1 - p_size:
                dy *= -1
            if x < 0 or x > S0 - p_size:
                dx *= -1
            screen.fill(Black)
            draw.ellipse(screen, White, (x, y, p_size, p_size))
            clock.tick(100)

Answer 1

The ellipse isn't being drawn because you forgot to update the display inside the while loop. Just type pygame.display.update() or display.update() at the bottom of your while loop in order to do that.

Code

from pygame import *
import pygame

init()

S0 = 640
S1 = 480

screen = display.set_mode((S0, S1))
display.set_caption("Zero-Player-Game")

clock = pygame.time.Clock()

x = 10
y = 10

dx = 1
dy = 2

Black = (0, 0, 0)
White = (255, 255, 255)

p_size = 50

end = False

while not end:
    for e in event.get():
        if e.type == QUIT:
            end = True
        x += dx
        y += dy
        if y < 0 or y > S1 - p_size:
            dy *= -1
        if x < 0 or x > S0 - p_size:
            dx *= -1
        screen.fill(Black)
        draw.ellipse(screen, White, (x, y, p_size, p_size))
        clock.tick(100)
        pygame.display.update()