当圆心在屏幕之外时，Pygame 无法绘制圆

Question

这种情况最近才发生在我身上，而且我没有对代码进行任何更改，所以我不知道从哪里开始寻找解决方案。

对于这个例子，我要求 chat-gpt 编写一个简单的 pygame 代码（粘贴在下面），但在我最近使用 pygame 编写的任何代码中都会发生这种情况：

import pygame
import numpy as np
import sys

# Initialize Pygame
pygame.init()

# Set up the window
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600
window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption("Pygame with Circle")

# Set up the colors
RED = (255, 0, 0)
WHITE = (255, 255, 255)

# Set up the player's properties using NumPy arrays
player_radius = 25
player_pos = np.array([WINDOW_WIDTH // 2, WINDOW_HEIGHT // 2])
player_speed = 5

# Main game loop
running = True
while running:
    # Event handling
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # Player movement
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player_pos[0] -= player_speed
    if keys[pygame.K_RIGHT]:
        player_pos[0] += player_speed
    if keys[pygame.K_UP]:
        player_pos[1] -= player_speed
    if keys[pygame.K_DOWN]:
        player_pos[1] += player_speed

    # Fill the background with white
    window.fill(WHITE)

    # Draw the player as a circle
    pygame.draw.circle(window, RED, player_pos, player_radius)

    # Update the display
    pygame.display.flip()

    # Cap the frame rate
    pygame.time.Clock().tick(60)

# Quit Pygame
pygame.quit()
sys.exit()    

如果在示例代码中，我使用箭头将圆圈向右移动，它最终会离开屏幕。

但是，如果我将它向左移动，它不会只是移动，而是留下一个覆盖屏幕整个宽度的红色条，与圆的直径一样，并且位于与高度相同的位置圆的中心。当圆心的 x 坐标小于零时，红色条就会显示。

游戏不会崩溃。如果我上下移动圆圈，红色条也会移动。如果我将圆圈进一步向左移动，栏将保持不变。如果我将圆圈向右移动，只要其中心的 x 坐标高于零，它就会重新出现并正常显示。

这只发生在圆圈上。红色方块通常会移动到屏幕的左边框。

如何解决这个问题？

Answer 1

import pygame
import numpy as np
import sys

# Initialize Pygame
pygame.init()

# Set up the window
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 600
window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption("Pygame with Circle")

# Set up the colors
RED = (255, 0, 0)
WHITE = (255, 255, 255)

# Set up the player's properties using pygame.Rect()
player_radius = 25
height = 5 #You can edit this later
player = pygame.Rect(WINDOW_WIDTH // 2, WINDOW_HEIGHT // 2, player_radius, height)
player_speed = 5

# Main game loop
running = True
while running:
    # Cap the frame rate
    pygame.time.Clock().tick(60)

    # Event handling
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # Player movement
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player.x -= player_speed
    if keys[pygame.K_RIGHT]:
        player.x += player_speed
    if keys[pygame.K_UP]:
        player.y -= player_speed
    if keys[pygame.K_DOWN]:
        player.y += player_speed

    # Fill the background with white
    window.fill(WHITE)

    # Draw the player as a circle
    pygame.draw.circle(window, RED, (player.x, player.y), player.width)

    # Update the display
    pygame.display.update()

# Quit Pygame
pygame.quit()
sys.exit()