为孩子准备的 第一个python编程学习案例-pygame小游戏

为孩子准备的 第一个python编程学习案例

• python安装
• IDE安装thonny
• 开发第一个小游戏-避坑指南
• 最终运行通过的小游戏
• 参考

• 想指导孩子进行python编程启蒙，自己研究了一下如何从零搭建python开发环境、安装配置基本库并运行一个游戏示例.

python安装

安装最新版本的python, 3.13.1版本

https://www.python.org/ftp/python/3.13.1/python-3.13.1-amd64.exe

安装之后 ，打开 CMD:

PS D:\AppGallery>
PS D:\AppGallery> python.exe
Python 3.13.1 (tags/v3.13.1:0671451, Dec  3 2024, 19:06:28) [MSC v.1942 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> help
>>> Welcome to Python 3.13's help utility! If this is your first time using
Python, you should definitely check out the tutorial at
https://docs.python.org/3.13/tutorial/.

Enter the name of any module, keyword, or topic to get help on writing
Python programs and using Python modules.  To get a list of available
modules, keywords, symbols, or topics, enter "modules", "keywords",
"symbols", or "topics".

Each module also comes with a one-line summary of what it does; to list
the modules whose name or summary contain a given string such as "spam",
enter "modules spam".

To quit this help utility and return to the interpreter,
enter "q", "quit" or "exit".

安装 pygame，如果缺少其他库，通常也可以使用pip进行安装。

pip instll pygame

IDE安装thonny

Thonny最常被推荐作为初学者的Python集成开发环境。它适用于Windows、macOS和Linux。它的功能包括代码调试、功能语法高亮和识别相似名称。Thonny还有一个“助手”，可以帮助你查看错误，并且你正在运行的应用程序可以在多个窗口中打开。

安装完python后，自带pip，这里无须再专门下载thonny安装包，而是直接使用pip安装 thonny

pip install thonny

打开 thonny

PS D:\AppGallery> thonny.exe
PS D:\AppGallery>

开发第一个小游戏-避坑指南

网上找了很多示例，遇到各种坑：

1. 代码不全 ， 比如 豆包提供的猜数游戏

2. cfg模块缺失： cfg是博主自定义的一些变量集合，缺失导致游戏无法正常运行

   如15个Python小游戏，上班摸鱼我能玩一天【内附源码】 - 小明谈Python - 博客园

       import cfg
   ModuleNotFoundError: No module named 'cfg'
   

3. 代码格式不对，一般是缩进问题：

   IndentationError: expected an indented block after function definition on line 3
   

4. 缩进问题，有时也会报错为变量未定义，需要自己复制 粘贴代码时注意检查缩进格式

  File "D:\code\7. python\catchgame.py", line 39, in Player
    if keys[pygame.K_LEFT]:
NameError: name 'keys' is not defined

最终运行通过的小游戏

如果提示缺少其他库，通常也可以使用pip进行安装。复制代码时注意缩进和格式 。

import pygame
import random

# Initialize pygame
pygame.init() 
# Set the width and height of the screen (width, height)
screen = pygame.display.set_mode((800, 600))

# Set the title of the window
pygame.display.set_caption("Catch Game")

# Set the clock
clock = pygame.time.Clock()

# Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)


# Player class
class Player(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([50, 50])
        self.image.fill(RED)
        self.rect = self.image.get_rect()
        self.rect.x = 375
        self.rect.y = 500
        self.speed = 5
    def update(self):
        # Get the current key state
        keys = pygame.key.get_pressed()

    # Move the player
    if keys[pygame.K_LEFT]:
        self.rect.x -= self.speed
    elif keys[pygame.K_RIGHT]:
        self.rect.x += self.speed

# Object class
class Object(pygame.sprite.Sprite):
   def __init__(self):
      super().__init__()
      self.image = pygame.Surface([25, 25])
      self.image.fill(BLUE)
      self.rect = self.image.get_rect()
      self.rect.x = random.randrange(0, 750)
      self.rect.y = random.randrange(-100, -40)
      self.speed = random.randint(2, 8)

   def update(self):
      # Move the object down the screen
      self.rect.y += self.speed

      # If the object goes off the bottom of the screen, reset it
      if self.rect.top > 600:
         self.rect.x = random.randrange(0, 750)
         self.rect.y = random.randrange(-100, -40)
         self.speed = random.randint(2, 8)

# Create groups for all sprites and objects
all_sprites = pygame.sprite.Group()
objects = pygame.sprite.Group()

# Create the player
player = Player()
all_sprites.add(player)

# Create the objects
for i in range(10):
   obj = Object()
   all_sprites.add(obj)
   objects.add(obj)

# Set the score
score = 0

# Set the font
font_name = pygame.font.match_font("arial")

# Function to draw text on the screen
def draw_text(surf, text, size, x, y):
   font = pygame.font.Font(font_name, size)
   text_surface = font.render(text, True, WHITE)
   text_rect = text_surface.get_rect()
   text_rect.midtop = (x, y)
   surf.blit(text_surface, text_rect)

# Game loop
running = True
while running:
   # Set the frame rate
   clock.tick(60)

   # Process events
   for event in pygame.event.get():
      if event.type == pygame.QUIT:
         running = False

   # Update all sprites
   all_sprites.update()

   # Check for collisions between the player and objects
   hits = pygame.sprite.spritecollide(player, objects, True)
   for hit in hits:
      score += 1
      obj = Object()
      all_sprites.add(obj)
      objects.add(obj)

   # Draw everything on the screen
   screen.fill(BLACK)
   all_sprites.draw(screen)
   draw_text(screen, "Score: {}".format(score), 18, 50, 10)

   # Update the screen
   pygame.display.update()

参考

Building a Simple Game in Python using the PyGame Module

The End.