我一直在尝试用 Python 制作一个游戏，但是当我移动我的角色时，它会留下痕迹。我知道它并没有显示出那么多，但如果你靠近的话，你可以看到这条踪迹，这真的让我很困扰。
这是我的代码：
import pygame
import os
from pygame import mixer
pygame.init()
mixer.init()
width = 800
height = 600
black = (0,0,0)
white = (255,255,255)
ship_width = 56
ship_height = 64
disp = pygame.display.set_mode((width,height))
pygame.display.set_caption("space_game")
clock = pygame.time.Clock()
background = pygame.image.load(os.path.join("Backgrounds", "Space.png"))
Ship00 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship00.png"))
Ship01 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship01.png"))
Ship02 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship02.png"))
Ship03 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship03.png"))
Ship04 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship04.png"))
Ship05 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship05.png"))
Ship06 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship06.png"))
Ship07 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship07.png"))
Ship08 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship08.png"))
Ship09 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship09.png"))
Ship10 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship10.png"))
Ship11 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship11.png"))
Ship12 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship12.png"))
Ship13 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship13.png"))
Ship14 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship14.png"))
Ship15 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship15.png"))
Ship16 = pygame.image.load(os.path.join("Images", "Animations", "Ship
Animation", "Ship16.png"))
images = [Ship00, Ship01, Ship02, Ship03, Ship04, Ship05, Ship06, Ship07,
Ship08, Ship09, Ship10, Ship11, Ship12, Ship13, Ship14, Ship15, Ship16]
mixer.music.load(os.path.join("Music", "space_song.wav"))
mixer.music.play()
def gameLoop():
x = (width * 0.45)
y = (height * 0.8)
x_ch = 0
y_ch = 0
x_bg = 0
index = 0
gameExit = False
while not gameExit:
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == ord("a"):
x_ch = -5
elif event.key == ord("d"):
x_ch = 5
elif event.key == ord("w"):
y_ch = -5
elif event.key == ord("s"):
y_ch = 5
if event.type == pygame.KEYUP:
if event.key == ord("a") or event.key == ord("d"):
x_ch = 0
if event.key == ord("w") or event.key == ord("s"):
y_ch = 0
x += x_ch
y += y_ch
if x > width - ship_width or x < 0:
x_ch = 0
if y > height - ship_height or y < 0:
y_ch = 0
x_loop = x_bg % background.get_rect().height
disp.blit(background, (0, x_loop - background.get_rect().height))
if x_loop < height:
disp.blit(background, (0, x_loop))
x_bg += 5
index += 1
index %= len(images)
current_image = images[index]
disp.blit(current_image, (x,y))
pygame.display.update()
clock.tick(60)
gameLoop()
pygame.quit()
quit()
我怎样才能解决这个问题？ （我知道轨迹几乎看不见，但我希望我的游戏很好）我有一个循环向下移动的背景，为什么轨迹不随之移动？
