├── README.md
├── ball.png
├── background-img.png
└── file.py


/README.md:
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1 | # Bouncing-Ball.
2 | Bouncing-Ball in Python.
3 | 


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/ball.png:
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https://raw.githubusercontent.com/abdullahthewebbee/Bouncing-Ball-main/HEAD/ball.png


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/background-img.png:
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https://raw.githubusercontent.com/abdullahthewebbee/Bouncing-Ball-main/HEAD/background-img.png


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/file.py:
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 1 | #This program shows the simulation of 8 balls bouncing under gravitational acceleration.
 2 | #It is also accompanied by eleastic collission with walls of the container.
 3 | #It is fun to watch.
 4 | import pygame
 5 | import time
 6 | import random
 7 | 
 8 | pygame.init()
 9 | 
10 | #setting screen size of pygame window to 1000 by 800 pixels
11 | screen=pygame.display.set_mode((1000,800))
12 | background=pygame.image.load('background-img.png')
13 | 
14 | #Adding title
15 | pygame.display.set_caption('Bouncing Ball Simulation')
16 | 
17 | class ball:
18 |     ball_image=pygame.image.load('ball.png')
19 |     g=1
20 |     def __init__(self):
21 |         self.velocityX=6
22 |         self.velocityY=6
23 |         self.X=random.randint(0,968)
24 |         self.Y=random.randint(0,550)
25 | 
26 |     def render_ball(self):
27 |         screen.blit(ball.ball_image, (self.X,self.Y))
28 |     def move_ball(self):
29 |         #changing y component of velocity due to downward acceleration
30 |         self.velocityY+=ball.g
31 | 
32 |         #changing position based on velocity
33 |         self.X+=self.velocityX
34 |         self.Y+=self.velocityY
35 | 
36 |         #collission with the walls lead to change in velocity
37 |         if self.X<0 or self.X>968:
38 |             self.velocityX*=-1
39 | 
40 |         if self.Y<0 and self.velocityY<0:
41 |             self.velocityY*=-1
42 |             self.Y=0
43 | 
44 |         if self.Y>768 and self.velocityY>0:
45 |             self.velocityY*=-1
46 |             self.Y=768
47 | 
48 | #list of balls created as objects
49 | Ball_List=[ball(),ball(), ball(), ball(), ball(), ball(), ball(), ball()]
50 | 
51 | #The main program loop
52 | running=True
53 | while running:
54 |     for event in pygame.event.get():
55 |         if event.type == pygame.QUIT:
56 |             running=False
57 |     
58 |     time.sleep(0.02)
59 |     screen.blit(background, (0,0))
60 |     for ball_item in Ball_List:
61 |         ball_item.render_ball()
62 |         ball_item.move_ball()
63 |     pygame.display.update()


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