在pygame中移动角色而不重复复制图像

import pygame

# 初始化pygame
pygame.init()

# 创建游戏窗口
screen = pygame.display.set_mode((800, 600))

# 创建角色类
class Character:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.speed = 5
        self.image = pygame.image.load("character.png")  # 加载角色的图像

    def move(self, direction):
        if direction == "up":
            self.y -= self.speed
        elif direction == "down":
            self.y += self.speed
        elif direction == "left":
            self.x -= self.speed
        elif direction == "right":
            self.x += self.speed

# 创建角色对象
character = Character(400, 300)

# 游戏主循环
running = True
while running:
    # 监听事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                character.move("up")
            elif event.key == pygame.K_DOWN:
                character.move("down")
            elif event.key == pygame.K_LEFT:
                character.move("left")
            elif event.key == pygame.K_RIGHT:
                character.move("right")

    # 绘制角色
    screen.blit(character.image, (character.x, character.y))

    # 更新屏幕
    pygame.display.flip()

# 退出游戏
pygame.quit()