用python和pygame库实现刮刮乐游戏

首先，确保你已经安装了pygame库。如果没有安装，可以通过以下命令安装：

pip install pygame

示例有两个。

一、简单刮刮乐游戏

准备两张图片，一张作为背景bottom_image.png，一张作为刮开的图片top_image.png：

请将bottom_image.png和top_image.png图片文件与游戏代码文件（.py文件）放在在同一目录下。

以下是简单刮刮乐游戏的代码：

import pygame
import os

# 初始化pygame
pygame.init()

# 设置游戏窗口
width, height = 356, 358
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption('刮刮乐游戏')

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

# 确保图片文件存在
if not os.path.isfile('bottom_image.png') or not os.path.isfile('top_image.png'):
    raise Exception("图片文件未找到，请确保bottom_image.png和top_image.png文件在同一目录下。")

# 加载图片
bottom_image = pygame.image.load('bottom_image.png').convert()
top_image = pygame.image.load('top_image.png').convert_alpha()

# 调整图片大小以适应窗口
bottom_image = pygame.transform.scale(bottom_image, (width, height))
top_image = pygame.transform.scale(top_image, (width, height))

# 创建一个与顶层图片相同大小的透明表面
scratch_surface = pygame.Surface((width, height), pygame.SRCALPHA)

# 将顶层图片绘制到透明表面上
scratch_surface.blit(top_image, (0, 0))

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

    # 获取鼠标位置和状态
    mouse_pos = pygame.mouse.get_pos()
    mouse_pressed = pygame.mouse.get_pressed()

    # 如果按下鼠标左键，则在透明表面上绘制透明圆形，模拟刮开效果
    if mouse_pressed[0]:  # 检测鼠标左键是否按下
        pygame.draw.circle(scratch_surface, (0, 0, 0, 0), mouse_pos, 20)

    # 绘制背景图片
    screen.blit(bottom_image, (0, 0))

    # 绘制刮开的透明表面
    screen.blit(scratch_surface, (0, 0))

    # 更新屏幕
    pygame.display.flip()

# 退出游戏
pygame.quit()

运行效果：

二、多对图片的刮刮乐游戏

使用多对图片，准备了好了多对图片，如bottom1.png和top1.png 、 bottom2.png和top2.png 、 bottom2.png和top3.png，并将它们放到了img文件夹中。用户可以选择图对游戏，游戏过程中可按下ESC 键返回到菜单页开始重玩。

项目的目录（project_directory）结构如下：

源码如下：

import pygame
import os
import sys

# 初始化pygame
pygame.init()

# 设置游戏窗口
width, height = 356, 358
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption('刮刮乐游戏（可选择图片对）')

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

# 图片对列表
image_pairs = [
    ("img/bottom1.png", "img/top1.png"),
    ("img/bottom2.png", "img/top2.png"),
    ("img/bottom3.png", "img/top3.png")
]

# 加载图片
def load_images(pair_index):
    bottom_image_path, top_image_path = image_pairs[pair_index]
    bottom_image = pygame.image.load(bottom_image_path).convert()
    top_image = pygame.image.load(top_image_path).convert_alpha()
    bottom_image = pygame.transform.scale(bottom_image, (width, height))
    top_image = pygame.transform.scale(top_image, (width, height))
    return bottom_image, top_image

# 游戏主函数
def run_game(bottom_image, top_image):
    scratch_surface = pygame.Surface((width, height), pygame.SRCALPHA)
    scratch_surface.blit(top_image, (0, 0))
    running = True
    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False
            # 检测键盘事件以返回菜单
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_ESCAPE:  # 按下ESC键
                    return  # 返回到菜单，而不是退出游戏
        mouse_pos = pygame.mouse.get_pos()
        mouse_pressed = pygame.mouse.get_pressed()
        if mouse_pressed[0]:
            pygame.draw.circle(scratch_surface, (0, 0, 0, 0), mouse_pos, 20)
        screen.blit(bottom_image, (0, 0))
        screen.blit(scratch_surface, (0, 0))
        pygame.display.flip()

# 菜单函数
def menu():
    font = pygame.font.Font(None, 26)    
    menu_running = True
    text_surfaces = []
    text_rects = []
    
    for i, pair in enumerate(image_pairs):
        text = font.render(f"[ Image {i+1} ]", True, RED)
        text_rect = text.get_rect(topleft=(10, 40 + i * 30))
        text_surfaces.append(text)
        text_rects.append(text_rect)
    
    while menu_running:
        screen.fill(WHITE)
        text = font.render(f"Press Esc to return to the menu:", True, BLACK)
        text_rect = text.get_rect(topleft=(10, 5))
        screen.blit(text, text_rect)
        
        for i, text in enumerate(text_surfaces):
            screen.blit(text, text_rects[i])
        pygame.display.flip()
        
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
            if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:  # Left click
                for i, rect in enumerate(text_rects):
                    if rect.collidepoint(event.pos):
                        bottom_image, top_image = load_images(i)
                        run_game(bottom_image, top_image)
                        # 在这里不需要设置menu_running = False，因为我们希望在游戏结束后自动返回菜单

# 运行菜单
menu()

运行效果如下图所示：

用户可以单击菜单项选择图对游戏，游戏过程中可按下ESC 键返回到菜单页开始重玩。