给我写一个有敌人和地图的python吃豆人小游戏

好的，以下是一个简单的Python吃豆人小游戏，包含敌人和地图。

import pygame
import random

# 初始化 Pygame
pygame.init()

# 定义游戏窗口大小
screen_width = 640
screen_height = 480

# 定义颜色
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)

# 设置游戏窗口
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("吃豆人小游戏")

# 加载资源
player_image = pygame.image.load("player.png")
enemy_image = pygame.image.load("enemy.png")
dot_image = pygame.image.load("dot.png")

# 定义游戏元素类
class Element(pygame.sprite.Sprite):
    def __init__(self, image, x, y):
        super().__init__()
        self.image = image
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y

# 定义玩家类
class Player(Element):
    def __init__(self, image, x, y):
        super().__init__(image, x, y)
        self.speed = 3

    def move(self, dx, dy):
        self.rect.x += dx * self.speed
        self.rect.y += dy * self.speed

# 定义敌人类
class Enemy(Element):
    def __init__(self, image, x, y):
        super().__init__(image, x, y)
        self.speed = 2
        self.direction = random.choice(["up", "down", "left", "right"])

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

        if self.rect.left < 0 or self.rect.right > screen_width or self.rect.top < 0 or self.rect.bottom > screen_height:
            self.direction = random.choice(["up", "down", "left", "right"])

# 定义豆子类
class Dot(Element):
    def __init__(self, image, x, y):
        super().__init__(image, x, y)

# 创建游戏元素组
all_sprites = pygame.sprite.Group()
dots = pygame.sprite.Group()
enemies = pygame.sprite.Group()

# 创建玩家实例
player = Player(player_image, screen_width // 2, screen_height // 2)
all_sprites.add(player)

# 创建豆子实例
for i in range(50):
    dot = Dot(dot_image, random.randint(0, screen_width - 20), random.randint(0, screen_height - 20))
    all_sprites.add(dot)
    dots.add(dot)

# 创建敌人实例
for i in range(5):
    enemy = Enemy(enemy_image, random.randint(0, screen_width - 20), random.randint(0, screen_height - 20))
    all_sprites.add(enemy)
    enemies.add(enemy)

# 游戏循环
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 处理键盘输入
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player.move(-1, 0)
    elif keys[pygame.K_RIGHT]:
        player.move(1, 0)
    elif keys[pygame.K_UP]:
        player.move(0, -1)
    elif keys[pygame.K_DOWN]:
        player.move(0, 1)

    # 移动敌人
    for enemy in enemies:
        enemy.move()

    # 碰撞检测
    for dot in pygame.sprite.spritecollide(player, dots, True):
        dots.remove(dot)
        all_sprites.remove(dot)

    for enemy in pygame.sprite.spritecollide(player, enemies, False):
        running = False

    # 更新画面
    screen.fill(BLACK)
    all_sprites.draw(screen)
    pygame.display.flip()

# 退出 Pygame
pygame.quit()

这个小游戏包含了玩家、敌人和豆子三种游戏元素，玩家通过键盘控制移动，敌人随机移动并会与玩家碰撞，豆子会被玩家吃掉。你可以自行替换图片和调整游戏元素的数量、速度和大小等参数。