Share an implementation example of pygame bouncy ball

Expectations:

1. The sphere rebounds after contacting the frame

2. Set the speed button, and change the speed and color state of the sphere after pressing it

Specific implementation:

 1 import pygame 2 
 from pygame.locals import * 3 
 import sys, random 4  5  6 class Circle(object): 7     
 #   设置Circle类属性 8     def __init__(self): 9         
 self.vel_x = 110         self.vel_y = 111         
 self.radius = 2012         
 self.pos_x, self.pos_y = random.randint(0, 255), random.randint(0, 255)13         
 self.width = 014         self.color = 0, 0, 015 16     
 #   球体颜色速度改变方法17     def change_circle(self, number):18         
 self.color = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)19         
 #   防止球体速度方向发生改变20         if self.vel_x  580 or self.pos_x  480 or self.pos_y 

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