Pong

Very similar to table tennis, you can control a paddle by moving it vertically across the left or right side of the screen and hitting a ball back and forth. Points are earned when one fails to return the ball to the other. The goal? Reach eleven points before the opponent.

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---

    
    # This game is from the official documentation of freegames
    # https://pypi.org/project/freegames/

    # pip install freegames

    # Player 1 Controls - Move Up: 'w', Move Down: 's'
    # Player 2 Controls - Move Up: 'i', Move Down: 'k'


    # import modules  
    from random import choice, random
    import turtle as t
    from freegames import vector


    # Set window title, color and icon
    t.title("Pong")
    root = t.Screen()._root
    root.iconbitmap("logo-ico.ico")
    t.bgcolor('#cc66ff')

         #Functions
    # Randomly generate value between (-5, -3) or (3, 5)  
    def value():
        return (3 + random() * 2) * choice([1, -1])

    ball = vector(0, 0)
    aim = vector(value(), value())
    state = {1: 0, 2: 0}


    # Move player position by change
    def move(player, change):
        state[player] += change

    # Draw rectangle at (x, y) with given width and height
    def rectangle(x, y, width, height):
        t.up()
        t.goto(x, y)
        t.down()
        t.begin_fill()
        for count in range(2):
            t.forward(width)
            t.left(90)
            t.forward(height)
            t.left(90)
        t.end_fill()

    # Draw game and move pong ball
    def draw():
        t.clear()
        rectangle(-200, state[1], 10, 50)
        rectangle(190, state[2], 10, 50)

        ball.move(aim)
        x = ball.x
        y = ball.y

        t.up()
        t.goto(x, y)
        t.dot(10)
        t.update()

        if y < -200 or y > 200:
            aim.y = -aim.y

        if x < -185:
            low = state[1]
            high = state[1] + 50

            if low <= y <= high:
                aim.x = -aim.x
            else:
                return

        if x > 185:
            low = state[2]
            high = state[2] + 50

            if low <= y <= high:
                aim.x = -aim.x
            else:
                return

        t.ontimer(draw, 50)

    t.setup(420, 420, 370, 0)
    t.hideturtle()
    t.tracer(False)
    t.listen()

    # Set Keyboard Controls
    t.onkey(lambda: move(1, 20), 'w')
    t.onkey(lambda: move(1, -20), 's')
    t.onkey(lambda: move(2, 20), 'i')
    t.onkey(lambda: move(2, -20), 'k')
    draw()
    t.done()