Python:pygame游戏编程之旅二(自由移动的小球)

最后更新于:2022-04-01 19:40:40

本节实现一个在窗口中自由运动的小球程序,做了详细注释,不多做解释了。 代码: ~~~ # -*- coding:utf-8 -*- import sys import pygame from pygame.locals import * def play_ball(): pygame.init() #窗口大小 window_size = (width, height) =(700, 500) #小球运行偏移量[水平,垂直],值越大,移动越快 speed = [1, 1] #窗口背景色RGB值 color_black = (0, 0, 139) #设置窗口模式 screen = pygame.display.set_mode(window_size) #设置窗口标题 pygame.display.set_caption('运动的小球') #加载小球图片 ball_image = pygame.image.load('ball.gif') #获取小球图片的区域开状 ball_rect = ball_image.get_rect() while True: #退出事件处理 for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() #使小球移动,速度由speed变量控制 ball_rect = ball_rect.move(speed) #当小球运动出窗口时,重新设置偏移量 if (ball_rect.left < 0) or (ball_rect.right > width): speed[0] =- speed[0] if (ball_rect.top < 0) or (ball_rect.bottom > height): speed[1] =- speed[1] #填充窗口背景 screen.fill(color_black) #在背景Surface上绘制 小球 screen.blit(ball_image, ball_rect) #更新窗口内容 pygame.display.update() if __name__ == '__main__': play_ball() ~~~ 测试: 动画程序,抓几张不同时刻的图片。 1、 ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-08_5757935bb4b8c.jpg) 2、 ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-08_5757935bc6896.jpg) 3、 ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-08_5757935bd9431.jpg) PS: 有朋友说球速度还是太快了,此时可以加个定时器控制一下,如下: ~~~ # -*- coding:utf-8 -*- import sys import pygame from pygame.locals import * def play_ball(): pygame.init() #窗口大小 window_size = (width, height) =(700, 500) #小球运行偏移量[水平,垂直],值越大,移动越快 speed = [1, 1] #窗口背景色RGB值 color_black = (0, 0, 139) #设置窗口模式 screen = pygame.display.set_mode(window_size) #设置窗口标题 pygame.display.set_caption('运动的小球') #加载小球图片 ball_image = pygame.image.load('ball.gif') #获取小球图片的区域开状 ball_rect = ball_image.get_rect() frames_per_sec = 10 fps_clock = pygame.time.Clock() while True: #退出事件处理 for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() #使小球移动,速度由speed变量控制 ball_rect = ball_rect.move(speed) #当小球运动出窗口时,重新设置偏移量 if (ball_rect.left < 0) or (ball_rect.right > width): speed[0] =- speed[0] if (ball_rect.top < 0) or (ball_rect.bottom > height): speed[1] =- speed[1] #填充窗口背景 screen.fill(color_black) #在背景Surface上绘制 小球 screen.blit(ball_image, ball_rect) #更新窗口内容 pygame.display.update() fps_clock.tick(frames_per_sec) if __name__ == '__main__': play_ball() ~~~
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