pygame简单小游戏代码

以下是一个简单的pygame小游戏代码，名为“飞机大战”：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置游戏窗口
screen_width = 480
screen_height = 700
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("飞机大战")

# 加载图片
background = pygame.image.load("background.png").convert()
player = pygame.image.load("player.png").convert_alpha()
enemy = pygame.image.load("enemy.png").convert_alpha()

# 设置游戏参数
player_rect = player.get_rect()
player_rect.left = (screen_width - player_rect.width) // 2
player_rect.top = screen_height - player_rect.height - 50

enemies = []
for i in range(5):
    enemy_rect = enemy.get_rect()
    enemy_rect.left = random.randint(0, screen_width - enemy_rect.width)
    enemy_rect.top = random.randint(-screen_height, 0)
    enemies.append(enemy_rect)

score = 0
font = pygame.font.Font(None, 36)

# 游戏循环
while True:
    # 处理游戏事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()

    # 处理键盘事件
    key_pressed = pygame.key.get_pressed()
    if key_pressed[pygame.K_LEFT]:
        player_rect.left -= 5
    if key_pressed[pygame.K_RIGHT]:
        player_rect.left += 5
    if key_pressed[pygame.K_UP]:
        player_rect.top -= 5
    if key_pressed[pygame.K_DOWN]:
        player_rect.top += 5

    # 处理敌机移动
    for enemy_rect in enemies:
        enemy_rect.top += 3
        if enemy_rect.top > screen_height:
            enemy_rect.left = random.randint(0, screen_width - enemy_rect.width)
            enemy_rect.top = random.randint(-screen_height, 0)

    # 处理碰撞检测
    for enemy_rect in enemies:
        if player_rect.colliderect(enemy_rect):
            pygame.quit()
            exit()

    # 处理分数
    for enemy_rect in enemies:
        if enemy_rect.top >= screen_height:
            score += 10
            enemy_rect.left = random.randint(0, screen_width - enemy_rect.width)
            enemy_rect.top = random.randint(-screen_height, 0)

    # 绘制游戏界面
    screen.blit(background, (0, 0))
    screen.blit(player, player_rect)
    for enemy_rect in enemies:
        screen.blit(enemy, enemy_rect)
    score_text = font.render("Score: {}".format(score), True, (255, 255, 255))
    screen.blit(score_text, (10, 10))

    # 更新游戏界面
    pygame.display.update()

游戏规则：

玩家控制一个飞机，在屏幕上移动，避开敌机，得分。当玩家撞到敌机时，游戏结束。每个敌机飞出屏幕下方后，会重新在屏幕上方随机位置生成，得分加10分。