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前几天了解了一下pygame,他是基于python的一个库,我们可以导入使用。下面以贪吃蛇为例子演示在Mac环境下的安装。首次搭建需要安装pygame,第二次只需要启动虚拟环境venv即可。在下面的安装步骤中有安装虚拟环境的步骤,虚拟环境可创建可不创建,创建虚拟环境的好处是可以将项目环境进行隔离,隔离完以后在虚拟环境下通过pip安装的不会在外部机器环境中出现,这样不影响其他的项目开发,做到每个项目都是独立的,对于大型多项目开发很有必要,只有这一个项目的话没必要,不过也可以安装,安装过程很简单,python -m venv . 一行命令即可。
- python --version
- pip3 --version
当出现版本号的时候即安装成功且正常(正常情况下安装完 python 即自动安装 pip)
打开 cmd,执行:
cd Documents/Project/PythonProject/pygametest
cmd 下进入文件夹执行以下命令
- python3 -m venv .
-
- source bin/activate
-
- #(推出命令 deactivate)
- pip3 install pygame
-
- #若安装失败,使用以下命令
- pip3 install pygame -i https://pypi.tuna.tsinghua.edu.cn/simple/
- pip3 list
-
- #若列出pygame及版本则证明安装成功
echo >> test.py
python3 test.py
- 终端下进入项目文件夹
- cd ~/Documents/Project/PythonProject/pygametest
-
- source bin/activate
- #启动虚拟环境
-
-
- python main.py
源码:
- import pygame,sys,time,random
- from pygame.locals import *
- redColour = pygame.Color(255,0,0)
- blackColour = pygame.Color(0,0,0)
- whiteColour = pygame.Color(255,255,255)
- greyColour = pygame.Color(150,150,150)
-
- def gameOver(playSurface):
- gameOverFont = pygame.font.Font('arial.ttf',72)
- gameOverSurf = gameOverFont.render('Game Over', True, greyColour)
- gameOverRect = gameOverSurf.get_rect()
- gameOverRect.midtop = (320, 10)
- playSurface.blit(gameOverSurf, gameOverRect)
- pygame.display.flip()
- time.sleep(5)
- pygame.quit()
- sys.exit()
-
- def main():
- pygame.init()
- fpsClock = pygame.time.Clock()
- playSurface = pygame.display.set_mode((640,480))
- pygame.display.set_caption('Raspberry Snake')
-
- snakePosition = [100,100]
- snakeSegments = [[100,100],[80,100],[60,100]]
- raspberryPosition = [300,300]
- raspberrySpawned = 1
- direction = 'right'
- changeDirection = direction
- while True:
- for event in pygame.event.get():
- if event.type == QUIT:
- pygame.quit()
- sys.exit()
- elif event.type == KEYDOWN:
- if event.key == K_RIGHT or event.key == ord('d'):
- changeDirection = 'right'
- if event.key == K_LEFT or event.key == ord('a'):
- changeDirection = 'left'
- if event.key == K_UP or event.key == ord('w'):
- changeDirection = 'up'
- if event.key == K_DOWN or event.key == ord('s'):
- changeDirection = 'down'
- if event.key == K_ESCAPE:
- pygame.event.post(pygame.event.Event(QUIT))
- if changeDirection == 'right' and not direction == 'left':
- direction = changeDirection
- if changeDirection == 'left' and not direction == 'right':
- direction = changeDirection
- if changeDirection == 'up' and not direction == 'down':
- direction = changeDirection
- if changeDirection == 'down' and not direction == 'up':
- direction = changeDirection
- if direction == 'right':
- snakePosition[0] += 20
- if direction == 'left':
- snakePosition[0] -= 20
- if direction == 'up':
- snakePosition[1] -= 20
- if direction == 'down':
- snakePosition[1] += 20
- snakeSegments.insert(0,list(snakePosition))
- if snakePosition[0] == raspberryPosition[0] and snakePosition[1] == raspberryPosition[1]:
- raspberrySpawned = 0
- else:
- snakeSegments.pop()
- if raspberrySpawned == 0:
- x = random.randrange(1,32)
- y = random.randrange(1,24)
- raspberryPosition = [int(x*20),int(y*20)]
- raspberrySpawned = 1
- playSurface.fill(blackColour)
- for position in snakeSegments:
- pygame.draw.rect(playSurface,whiteColour,Rect(position[0],position[1],20,20))
- pygame.draw.rect(playSurface,redColour,Rect(raspberryPosition[0], raspberryPosition[1],20,20))
-
- pygame.display.flip()
- if snakePosition[0] > 620 or snakePosition[0] < 0:
- gameOver(playSurface)
- if snakePosition[1] > 460 or snakePosition[1] < 0:
- for snakeBody in snakeSegments[1:]:
- if snakePosition[0] == snakeBody[0] and snakePosition[1] == snakeBody[1]:
- gameOver(playSurface)
- fpsClock.tick(5)
-
- if __name__ == "__main__":
- main()
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