python贪吃蛇游戏项目 pygame Sprites（精灵）、图片载入、类结构

import pygame
import sys

pygame.init()

WIDTH, HEIGHT = 640, 480
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Sprites")

clock = pygame.time.Clock()

# 颜色
BG_COLOR = (30, 30, 30)

# 玩家 Sprite 类（这比 Day 3 的变量更专业）
class Player(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()

        # 载入图片
        self.image = pygame.image.load("/home/geo/Downloads/geo/_posts/game/snake/assets/player.jpeg").convert_alpha()
        self.rect = self.image.get_rect()

        # 起始位置
        self.rect.center = (x, y)

        self.speed = 5

    def update(self):
        # 键盘输入
        keys = pygame.key.get_pressed()
        if keys[pygame.K_LEFT]:
            self.rect.x -= self.speed
        if keys[pygame.K_RIGHT]:
            self.rect.x += self.speed
        if keys[pygame.K_UP]:
            self.rect.y -= self.speed
        if keys[pygame.K_DOWN]:
            self.rect.y += self.speed

        # 边界限制
        self.rect.x = max(0, min(self.rect.x, WIDTH - self.rect.width))
        self.rect.y = max(0, min(self.rect.y, HEIGHT - self.rect.height))


# 建立玩家对象 + Sprite group
player = Player(320, 240)
all_sprites = pygame.sprite.Group()
all_sprites.add(player)


# 游戏主循环
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 更新逻辑
    all_sprites.update()

    # 绘图
    screen.fill(BG_COLOR)
    all_sprites.draw(screen)

    pygame.display.flip()
    clock.tick(60)

pygame.quit()
sys.exit()