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

"""
Task

This additional code ends the game for you - if the ball hits the bottom - all movement stops!
See if you can use your knowledge of TKINTER to add a proper "Game Over" Label to appear on the screen, when the game is over!
(before looking ahead to the next challenge which contains the solution)
"""

from tkinter import *
import random
import time

class Ball: 
    def __init__(self,canvas,bat,color):  
        self.canvas=canvas
        self.bat=bat 
        self.id=canvas.create_oval(30,30,50,50,fill=color) 
        self.canvas.move(self.id,100,200)
        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()
        #Add a hit_bottom object variable here..
        self.hit_bottom=False #...note we change the main loop at the bottom to include an if function that utilises this hit_bottom object variable
        
   
    def hit_bat(self,pos):
        bat_pos=self.canvas.coords(self.bat.id) 
        if pos[2] >=bat_pos[0] and pos[0] <=bat_pos[2]: 
            if pos[3]>=bat_pos[1] and pos[3] <= bat_pos[3]: 
                return True
        return False

    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
            #we make a change here as well -alter the if statement to see if the ball has hit the bottom (equal or greater than canvas height), if so hit_bottom =True (as there is no more need to bounce the ball if the game is over!)
        if pos[3] >=self.canvas_height: 
            self.hit_bottom = True
        
        if self.hit_bat(pos) ==True: 
            self.y=-6 
        if pos[0] <=0:
            self.x=6
        if pos[2]>=self.canvas_width:
            self.x=-6


class Pongbat():
    def __init__(self,canvas,color): 
        self.canvas=canvas
        self.id=canvas.create_rectangle(0,0,100,10,fill=color) 
        self.canvas.move(self.id,200,300)
        self.x=0
        self.canvas_width=self.canvas.winfo_width() 
        self.canvas.bind_all('',self.left_turn)
        self.canvas.bind_all('',self.right_turn)
        

    def draw(self): 
        self.canvas.move(self.id,self.x,0)
        pos=self.canvas.coords(self.id)
        if pos[0]<=0: 
            self.x=0
        if pos[2]>=self.canvas_width:
            self.x=0
    
    def left_turn(self,evt):
        self.x=-10 

    def right_turn(self,evt):
        self.x=10
        
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()

    bat1=Pongbat(canvas,'red') 
    ball1=Ball(canvas,bat1, 'green') 
    
    while 1:
        if ball1.hit_bottom ==False: #this creates a condition - inside the loop it continues to check to see if the ball has hit (or not) the bottom of the screen
            tk.update()
            ball1.draw()
            bat1.draw() 
        time.sleep(0.02) 
main()


#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"""

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!