如何用函数实现一个pygame打地鼠游戏

下面是一个简单的pygame打地鼠游戏的函数实现：

import pygame
import random

pygame.init()

# 设置窗口大小
WINDOW_WIDTH = 640
WINDOW_HEIGHT = 480
WINDOW_SIZE = (WINDOW_WIDTH, WINDOW_HEIGHT)

# 设置颜色
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

# 设置字体
FONT = pygame.font.SysFont('arial', 24)

# 设置游戏参数
MOLE_SIZE = 50
MOLE_SPEED = 5
MOLE_SCORE = 10
GAME_TIME = 30

# 初始化游戏
def init_game():
    # 创建窗口
    window = pygame.display.set_mode(WINDOW_SIZE)
    pygame.display.set_caption('打地鼠')

    # 加载图片
    mole_image = pygame.image.load('mole.png').convert_alpha()

    # 创建地鼠
    mole_rect = mole_image.get_rect()
    mole_rect.centerx = random.randint(MOLE_SIZE, WINDOW_WIDTH - MOLE_SIZE)
    mole_rect.centery = random.randint(MOLE_SIZE, WINDOW_HEIGHT - MOLE_SIZE)

    # 初始化游戏状态
    score = 0
    time_left = GAME_TIME * 1000
    game_over = False

    return window, mole_image, mole_rect, score, time_left, game_over

# 绘制游戏界面
def draw_game(window, mole_image, mole_rect, score, time_left):
    # 绘制背景
    window.fill(WHITE)

    # 绘制地鼠
    window.blit(mole_image, mole_rect)

    # 绘制得分和时间
    score_text = FONT.render('得分：{}'.format(score), True, BLACK)
    window.blit(score_text, (10, 10))

    time_text = FONT.render('时间：{:.1f}'.format(time_left / 1000), True, BLACK)
    window.blit(time_text, (WINDOW_WIDTH - time_text.get_width() - 10, 10))

    # 刷新屏幕
    pygame.display.flip()

# 处理游戏事件
def handle_events():
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

# 更新游戏状态
def update_game(mole_rect):
    # 移动地鼠
    mole_rect.move_ip(random.randint(-MOLE_SPEED, MOLE_SPEED), random.randint(-MOLE_SPEED, MOLE_SPEED))

    # 碰撞检测
    if mole_rect.left < 0 or mole_rect.right > WINDOW_WIDTH or mole_rect.top < 0 or mole_rect.bottom > WINDOW_HEIGHT:
        mole_rect.centerx = random.randint(MOLE_SIZE, WINDOW_WIDTH - MOLE_SIZE)
        mole_rect.centery = random.randint(MOLE_SIZE, WINDOW_HEIGHT - MOLE_SIZE)

    # 更新游戏状态
    return mole_rect

# 主函数
def main():
    # 初始化游戏
    window, mole_image, mole_rect, score, time_left, game_over = init_game()

    # 游戏循环
    clock = pygame.time.Clock()
    while not game_over:
        # 处理事件
        handle_events()

        # 更新游戏状态
        mole_rect = update_game(mole_rect)

        # 绘制游戏界面
        draw_game(window, mole_image, mole_rect, score, time_left)

        # 更新时间
        time_left -= clock.tick(60)

        # 判断游戏是否结束
        if time_left < 0:
            game_over = True

    # 显示游戏结束界面
    window.fill(WHITE)

    score_text = FONT.render('得分：{}'.format(score), True, BLACK)
    window.blit(score_text, (WINDOW_WIDTH // 2 - score_text.get_width() // 2, WINDOW_HEIGHT // 2 - score_text.get_height() // 2))

    pygame.display.flip()

    # 等待退出
    while True:
        handle_events()

if __name__ == '__main__':
    main()

这个函数实现的pygame打地鼠游戏比较简单，只有一个地鼠，玩家需要在有限的时间内打中地鼠来得分。游戏结束后会显示得分。这个函数可以作为一个模板，你可以根据自己的需求进行修改和扩展。