Coursera-an Introduction to Interactive programming in Python (Part 1)-mini-project #4-"Pong"

In this project, we'll build a version of Pong, one of the first arcade video games (1972). While Pong isn't particularly exciting compared to today's video games, Pong was relatively simple to build and provides a Nice opportunity to work on the skills so you'll need to build a game likeasteroids. As usual, we have the provided a program template , which can be used to the guide your development of Pong.

#implementation of classic arcade game PongImportSimpleguiImportRandom#Initialize Globals-pos and vel encode vertical info for paddlesWIDTH = 600HEIGHT= 400Ball_radius= 20Pad_width= 8Pad_height= 80Half_pad_width= PAD_WIDTH/2Half_pad_height= PAD_HEIGHT/2 Left=Falseright=True#Initialize Ball_pos and ball_vel for new bal in middle of table#If direction is right, the ball's velocity is upper right, and else upper leftdefSpawn_ball (direction):GlobalBall_pos, Ball_vel#these is vectors stored as lists        ifDirection = =Right :#ball_vel[0] = Random.randrange (2, 4)        #ball_vel[1] = Random.randrange (1, 3)Ball_vel[0] + = 1ball_vel[1] + = 1elifDirection = =Left :#ball_vel[0] =-Random.randrange (2, 4)        #ball_vel[1] = Random.randrange (1, 3)Ball_vel[0]-= 1ball_vel[1]-= 1defIni_pad ():GlobalScore1, Score2, Paddle1_pos, Paddle1_p, Paddle2_pos, paddle2_p, Paddle1_vel , Paddle2_vel paddle1_p= HEIGHT/2-half_pad_height paddle2_p= HEIGHT/2-half_pad_height Score1=0 Score2=0 Paddle1_vel=0 Paddle2_vel=0 Paddle1_pos=[ [0,0], [0,0], [0,0], [0,0]] Paddle2_pos=[ [0,0], [0,0], [0,0], [0,0]]#Define event handlersdefnew_game ():GlobalPaddle1_pos, Paddle1_p, Paddle2_pos, Paddle2_p, Paddle1_vel, Paddle2_vel#these is numbers    GlobalScore1, Score2#these is ints    GlobalBall_pos, Ball_vel ball_pos= [WIDTH/2, HEIGHT/2] Ball_vel= [1, 1] Ini_pad () Spawn_ball (right)defDraw (Canvas):GlobalScore1, Score2, Ball_pos, Ball_velGlobalPaddle1_pos, Paddle1_p, Paddle2_pos, Paddle2_p, Paddle1_vel, Paddle2_vel#draw mid line and guttersCanvas.draw_line ([Width/2, 0],[WIDTH/2, HEIGHT], 1," White") Canvas.draw_line ([Pad_width, 0],[pad_width, HEIGHT],1," White") Canvas.draw_line ([WIDTH-Pad_width, 0],[width-pad_width, HEIGHT], 1," White")            #Update BallBall_pos[0] + =Ball_vel[0] ball_pos[1] + = Ball_vel[1]    #Collision Detection    ifBall_pos[0] <= Ball_radius +Pad_width:ball_vel[0]= -Ball_vel[0]elifBall_pos[0] >= Width-pad_width-Ball_radius:ball_vel[0]= -Ball_vel[0]ifBALL_POS[1] <=ball_radius:ball_vel[1] =-ball_vel[1]    elifBALL_POS[1] >= HEIGHT-ball_radius:ball_vel[1] =-ball_vel[1]    #Draw BallCanvas.draw_circle (Ball_pos, Ball_radius, 5,'Blue',' White')    #Update paddle ' s vertical position, keep paddle on the screenpaddle1_p+=Paddle1_velifPaddle1_p <=0:paddle1_p=0ifPaddle1_p >= HEIGHT-pad_width:paddle1_p= HEIGHT-Pad_width Paddle1_pos[0]=[0, paddle1_p] paddle1_pos[1] =[Pad_width, paddle1_p] paddle1_pos[2] = [Pad_width, paddle1_p +Pad_height] paddle1_pos[3] = [0, paddle1_p +Pad_height] Paddle2_p+=Paddle2_velifPaddle2_p <=0:paddle2_p=0ifPaddle2_p >= HEIGHT-pad_width:paddle2_p= HEIGHT-Pad_width Paddle2_pos[0]= [WIDTH-pad_width, paddle2_p] paddle2_pos[1] =[WIDTH, paddle2_p] paddle2_pos[2] = [WIDTH, paddle2_p +Pad_height] paddle2_pos[3] = [Width-pad_width, paddle2_p +Pad_height]#Draw PaddlesCanvas.draw_polygon (Paddle1_pos, 1,'Blue',' White') Canvas.draw_polygon (Paddle2_pos,1,'Blue',' White')    #determine whether paddle and ball collide    ifBall_pos[0] <= Ball_radius +Pad_width:ifBALL_POS[1] >= paddle1_pos[0][1] andBALL_POS[1] <= paddle1_pos[2][1]: Spawn_ball (right)Else: Score2+ = 1ifBall_pos[0] >= Width-pad_width-Ball_radius:ifBALL_POS[1] >= paddle2_pos[0][1] andBALL_POS[1] <= paddle2_pos[2][1]: Spawn_ball (left)Else: Score1+ = 1#Draw scoresCanvas.draw_text (str (score1), [WIDTH/2-40, 40], 30,' White') Canvas.draw_text (str (score2), [WIDTH/2 + 20, 40], 30,' White')defKeyDown (key):GlobalPaddle1_vel, Paddle2_velifKey = = Simplegui. key_map['W']: Paddle1_vel=-8elifKey = = Simplegui. key_map['s']: Paddle1_vel= 8ifKey = = Simplegui. key_map[' up']: Paddle2_vel=-8elifKey = = Simplegui. key_map[' Down']: Paddle2_vel= 8defKeyUp (key):GlobalPaddle1_vel, Paddle2_velifKey = = Simplegui. key_map['W']: Paddle1_vel=0elifKey = = Simplegui. key_map['s']: Paddle1_vel=0ifKey = = Simplegui. key_map[' up']: Paddle2_vel=0elifKey = = Simplegui. key_map[' Down']: Paddle2_vel=0defButton_restart (): New_game ()#Create frameframe = Simplegui.create_frame ("Pong", WIDTH, HEIGHT) Frame.set_draw_handler (Draw) Frame.set_keydown_handler (KeyDown) Frame.set_keyup_handler (KeyUp) Frame.add_button ("Restart", button_restart,100)#Start Framenew_game () Frame.start ( )

Coursera-an Introduction to Interactive programming in Python (Part 1)-mini-project #4-"Pong"