# Pong Game by Paarth Pandey 

# Part 1 : Getting Started

import turtle 

wn = turtle.Screen()

wn.title("Pong Game by Paarth Pandey")

wn.bgcolor("black")

wn.setup(width = 800, height = 600)

wn.tracer(0)

# Score

score_a = 0

score_b = 0

# Paddle A

paddle_a = turtle.Turtle()

paddle_a.speed(0)

paddle_a.shape('square')

paddle_a.color('white')

paddle_a.penup()

paddle_a.goto(-350, 0)

paddle_a.shapesize(5, 1)

# Paddle B

paddle_b = turtle.Turtle()

paddle_b.speed(0)

paddle_b.shape('square')

paddle_b.color('white')

paddle_b.penup()

paddle_b.goto(350, 0)

paddle_b.shapesize(5, 1)

# Ball

ball = turtle.Turtle()

ball.speed(0)

ball.shape('circle')

ball.color('white')

ball.penup()

ball.goto(0, 0)

ball.dx = 0.1

ball.dy = 0.1

# Pen

pen = turtle.Turtle()

pen.speed(0)

pen.color("white")

pen.penup()

pen.hideturtle()

pen.goto(0, 260)

pen.write("Player A: 0  Player B: 0", align="center", font=("Courier", 24, "bold"))

# Functions

def paddle_a_up():

    y = paddle_a.ycor()

    y += 20

    paddle_a.sety(y)

def paddle_a_down():

    y = paddle_a.ycor()

    y -= 20

    paddle_a.sety(y)

def paddle_b_up():

    y = paddle_b.ycor()

    y += 20

    paddle_b.sety(y)

def paddle_b_down():

    y = paddle_b.ycor()

    y -= 20

    paddle_b.sety(y)

# Keyboard binding 

wn.listen()

wn.onkeypress(paddle_a_up, "w")

wn.onkeypress(paddle_a_down, "s")

wn.onkeypress(paddle_b_up, "Up")

wn.onkeypress(paddle_b_down, "Down")

# Moving the ball

# Main Game Loop

while True:

    wn.update()

    # Move the ball

    ball.setx(ball.xcor() + ball.dx)

    ball.sety(ball.ycor() + ball.dy)

    # Border checking

    if ball.ycor() > 290: 

        ball.sety(290)

        ball.dy *= -1

    if ball.ycor() < -290: 

        ball.sety(-290)

        ball.dy *= -1

    if ball.xcor() > 390:

        ball.goto(0, 0)

        ball.dx *= -1

        score_a += 1

        pen.clear()

        pen.write("Player A: {}  Player B: {}".format(score_a, score_b), align="center", font=("Courier", 24, "bold"))

    if ball.xcor() < -390:

        ball.goto(0, 0)

        ball.dx *= -1

        score_b += 1

        pen.clear()

        pen.write("Player A: {}  Player B: {}".format(score_a, score_b), align="center", font=("Courier", 24, "bold"))

    # Paddle and ball bouncing 

    if (ball.xcor() > 340 and ball.xcor() < 350) and (ball.ycor() < paddle_b.ycor() + 50 and ball.ycor() > paddle_b.ycor() - 50):

        ball.dx *= -1

    if (ball.xcor() < -340 and ball.xcor() > -350) and (ball.ycor() < paddle_a.ycor() + 50 and ball.ycor() > paddle_a.ycor() - 50):

        ball.dx *= -1