Code and Challenge

Copy and paste the code below. Run it! Read the task and see if you can do it before moving on to the next challenge

#note - an ERROR may be caused as Python is complaining about breaking out of the while loop when the window is closed - you can ignore that for now (or a fix is provied in the solutions section for those who are interested"""
"""
==========Task===============
The next task will be to add the bat class and display a bat (paddle) on the screen. See if you can do this
without looking ahead at the solution
"""

from tkinter import *
import random
import time

class Ball: 
    def __init__(self,canvas,color): 
        self.canvas=canvas 
        self.id=canvas.create_oval(30,30,50,50,fill=color) 
        self.canvas.move(self.id,100,200)

        #ADD THESE LINES TO OUR __INIT__ METHOD
        starting_position=[-3,-2,-1,1,2,3] 
        random.shuffle(starting_position) 
        self.x = starting_position[0] 
        self.y = -3 
        self.canvas_height=self.canvas.winfo_height()
        self.canvas_width=self.canvas.winfo_width() #for left right detection we need the width of the canvas as well. 

    def draw(self): 
        self.canvas.move(self.id,self.x,self.y) 
        pos=self.canvas.coords(self.id) 
        

        if pos[1] <=0: 
            self.y=6 #increase or decrease for the speed (up and down) and do the same for the x values
        if pos[3] >=self.canvas_height: 
            self.y=-6
       #THIS PART CHECKS FOR THE RIGHT AND LEFT COLLISION DETECTION SO THAT THE BALL BOUNCES ON ALL WALLS
        if pos[0] <=0:
            self.x=6
        if pos[2]>=self.canvas_width:
            self.x=-6
        

def main():
    tk=Tk()
    tk.title("My 21st Century Pong Game")
    tk.resizable(0,0)
    tk.wm_attributes("-topmost",1)
    canvas=Canvas(tk,bg="white",width=500,height=400,bd=0,highlightthickness=0)
    canvas.pack()
    tk.update()

    ball1=Ball(canvas,'green')
    while 1:
        tk.update()
        ball1.draw() 
        time.sleep(0.02) # experiment with these values to see what happens to the speed of the ball
main()

Code your solution here

Systems Life Cycle (in a nutshell): Analyse - Design - Create - Test - Evaluate. Designing something or writing out some pseudocode before you actually write code is always a good idea! Get in to the habit of doing so! You can draw your flowchart here and screenshot it.

A sample flow chart (design) for this particular challenge could look like:

Each challenge section below provides an online drawing tool where you can dynamically create flowcharts. Screenshot them into your presentation for submission.

Solutions & Answers

Answers /Solutions in the "members area" drive under: "Solve and Learn >>SOLUTIONS"

Testing Table

You may want to read a little about Testing first. A teacher may go through some examples with you. Feel free to fill in the test table here, and screenshot it in to your powerpoint. Testing is absolutely essential once you have created a program!

Test No.	Description	Test Data(input)	Expected Outcome	Actual Outcome	Further Action?
1	Describe your test here. Is it a valid, valid-extreme,invalid, invalid extreme, or borderline test?
2
3
4
5

Coming soon!