> For the complete documentation index, see [llms.txt](https://digitalgarden.batamladen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://digitalgarden.batamladen.com/notes/programming/python/examples-projects/tennis.md).

# Tennis

{% tabs %}
{% tab title="main.py" %}

```python
import time

screen = turtle.Screen()
screen.setup(800, 600)
screen.bgcolor("black")
screen.title("Ping Pong")
screen.tracer()

r_paddle = Paddle((350, 0))
l_paddle = Paddle((-350, 0))
ball = Ball()
scoreboard = Scoreboard()

screen.listen()
screen.onkeypress(r_paddle.go_up, "Up")
screen.onkeypress(r_paddle.go_down, "Down")
screen.onkeypress(l_paddle.go_up, "w")
screen.onkeypress(l_paddle.go_down, "s")

game_on = True
while game_on:
    time.sleep(ball.move_speed)
    screen.update()
    ball.move()

    if ball.ycor() > 280 or ball.ycor() < -280:
        ball.bounce_y()

    if ball.distance(r_paddle) < 50 and ball.xcor() > 320 or ball.distance(l_paddle) < 50 and ball.xcor() < -320:
        ball.bounce_x()

    if ball.xcor() > 380:
        ball.reset_position()
        scoreboard.l_point()

    if ball.xcor() < -380:
        ball.reset_position()
        scoreboard.r_point()

screen.exitonclick()
```

{% endtab %}

{% tab title="ball.py" %}

```python
from turtle import Turtle

class Ball(Turtle):

    def __init__(self):
        super().__init__()
        self.shape("circle")
        self.color("white")
        self.penup()
        self.move_speed = 0.005
        self.x_move = 10
        self.y_move = 10

    def move(self):
        new_x = self.xcor() + self.x_move
        new_y = self.ycor() + self.y_move
        self.goto(new_x, new_y)

    def bounce_x(self):
        self.x_move *= -1
        self.move_speed *= 1

    def bounce_y(self):
        self.y_move *= -1
        self.move_speed *= 1

    def reset_position(self):
        self.home()
        self.move_speed = 0.005
        self.bounce_x()

```

{% endtab %}

{% tab title="paddle.py" %}

```python
from turtle import Turtle

class Paddle(Turtle):

    def __init__(self,position):
        super().__init__()
        self.shape("square")
        self.color("white")
        self.shapesize(stretch_wid=5, stretch_len=1)
        self.penup()
        self.goto(position)

    def go_up(self):
        new_y = self.ycor() + 20
        self.goto(self.xcor(), new_y)

    def go_down(self):
        new_y = self.ycor() - 20
        self.goto(self.xcor(), new_y)



```

{% endtab %}

{% tab title="scoreboard.py" %}

```python
from turtle import Turtle

class Scoreboard(Turtle):

    def __init__(self):
        super().__init__()
        self.color("white")
        self.penup()
        self.hideturtle()
        self.l_score = 0
        self.r_score = 0
        self.update()

    def update(self):
        self.clear()
        self.goto(-100, 190)
        self.write(self.l_score, align="center", font=("Times New Roman", 80, "normal"))
        self.goto(100,190)
        self.write(self.r_score, align="center", font=("Times New Roman", 80, "normal"))

    def l_point(self):
        self.l_score += 1
        self.update()

    def r_point(self):
        self.r_score += 1
        self.update()

```

{% endtab %}
{% endtabs %}


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