写一个Python开发的小游戏（飞机大战）

好的，下面是一个简单的Python开发的飞机大战小游戏代码：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置游戏窗口大小
WIDTH, HEIGHT = 480, 700
screen = pygame.display.set_mode((WIDTH, HEIGHT))

# 设置游戏标题
pygame.display.set_caption("飞机大战")

# 加载游戏图片
background_img = pygame.image.load("background.png")
player_img = pygame.image.load("player.png")
enemy_img = pygame.image.load("enemy.png")
bullet_img = pygame.image.load("bullet.png")

# 设置游戏音效
bullet_sound = pygame.mixer.Sound("bullet.wav")
enemy_sound = pygame.mixer.Sound("enemy.wav")
gameover_sound = pygame.mixer.Sound("gameover.wav")

# 设置游戏字体
font = pygame.font.SysFont("Arial", 32)

# 定义游戏对象
class GameObject:
    def __init__(self, x, y, img):
        self.image = img
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y

    def draw(self, surface):
        surface.blit(self.image, self.rect)

# 定义玩家飞机对象
class Player(GameObject):
    def __init__(self, x, y, img):
        super().__init__(x, y, img)
        self.speed = 5
        self.bullets = []

    def update(self):
        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_SPACE]:
            self.fire()

    def fire(self):
        bullet = Bullet(self.rect.x + 35, self.rect.y)
        self.bullets.append(bullet)
        bullet_sound.play()

# 定义敌机对象
class Enemy(GameObject):
    def __init__(self, x, y, img):
        super().__init__(x, y, img)
        self.speed = 3

    def update(self):
        self.rect.y += self.speed

# 定义子弹对象
class Bullet(GameObject):
    def __init__(self, x, y):
        super().__init__(x, y, bullet_img)
        self.speed = 10

    def update(self):
        self.rect.y -= self.speed

# 定义游戏主函数
def main():
    # 创建玩家飞机对象
    player = Player(200, 600, player_img)

    # 创建敌机列表
    enemies = []
    for i in range(5):
        enemy = Enemy(random.randint(0, 400), -100 * i, enemy_img)
        enemies.append(enemy)

    # 创建子弹列表
    bullets = []

    # 设置游戏分数
    score = 0

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

        # 更新玩家飞机
        player.update()

        # 更新子弹
        for bullet in player.bullets:
            bullet.update()
            if bullet.rect.y < -20:
                player.bullets.remove(bullet)

        # 更新敌机
        for enemy in enemies:
            enemy.update()
            if enemy.rect.y > HEIGHT:
                enemies.remove(enemy)

        # 检测子弹和敌机的碰撞
        for bullet in player.bullets:
            for enemy in enemies:
                if bullet.rect.colliderect(enemy.rect):
                    player.bullets.remove(bullet)
                    enemies.remove(enemy)
                    enemy_sound.play()
                    score += 10

        # 检测玩家飞机和敌机的碰撞
        for enemy in enemies:
            if player.rect.colliderect(enemy.rect):
                gameover_sound.play()
                running = False

        # 绘制游戏画面
        screen.blit(background_img, (0, 0))
        player.draw(screen)
        for bullet in player.bullets:
            bullet.draw(screen)
        for enemy in enemies:
            enemy.draw(screen)
        score_text = font.render("Score: {}".format(score), True, (255, 255, 255))
        screen.blit(score_text, (10, 10))

        # 更新游戏画面
        pygame.display.update()

    # 退出游戏
    pygame.quit()

if __name__ == "__main__":
    main()

你可以根据自己的需要对代码进行修改和扩展。