Day 022

Udemy Python Bootcamp Day 022

PONG GAME

• Create the screen
• Create and move a paddle
• Create another paddle
• Create the ball and make it move
• Detect collision with wall and bounce
• Detect collision with paddle
• Detect when paddle misses
• Keep score
  
  

Create the screen

from turtle import Screen

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

screen.exitonclick()

Create and move a paddle

from turtle import Turtle, Screen

screen = Screen()
screen.bgcolor("black")
screen.setup(800, 600)
screen.title("Pong")
screen.tracer(0)

paddle = Turtle("square")
paddle.color("white")
paddle.shapesize(5, 1)
paddle.penup()
paddle.goto(350, 0)

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

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

screen.listen()
screen.onkey(go_up, "Up")
screen.onkey(go_down, "Down")

game_is_on = True
while game_is_on:
    screen.update()


screen.exitonclick()

Write the Paddle Class
paddle.py

from turtle import Turtle


class Paddle(Turtle):

    def __init__(self, position):
        super().__init__()
        self.shape("square")
        self.color("white")
        self.shapesize(5, 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)

__init__를 __int__로 오타내는 바람에 오류 한참을 못찾았어..... 아 멍청해


Create another paddle
main.py

from turtle import Screen
from paddle import Paddle

screen = Screen()
screen.bgcolor("black")
screen.setup(800, 600)
screen.title("Pong")
screen.tracer(0)

r_paddle = Paddle((350, 0))
l_paddle = Paddle((-350, 0))

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

game_is_on = True
while game_is_on:
    screen.update()


screen.exitonclick()

Create the ball and make it move
ball.py

from turtle import Turtle


class Ball(Turtle):

    def __init__(self):
        super().__init__()
        self.shape("circle")
        self.color("white")
        self.penup()

    def move(self):
        new_x = self.xcor() + 10
        new_y = self.ycor() + 10
        self.goto(new_x, new_y)

main.py

from turtle import Screen
from paddle import Paddle
from ball import Ball
import time

screen = Screen()
screen.bgcolor("black")
screen.setup(800, 600)
screen.title("Pong")
screen.tracer(0)

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

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

game_is_on = True
while game_is_on:
    time.sleep(0.1)
    screen.update()
    ball.move()


screen.exitonclick()

timemodule 사용해서 ball 움직이는 속도 조절

Detect collision with wall and bounce
ball.py

from turtle import Turtle


class Ball(Turtle):

    def __init__(self):
        super().__init__()
        self.shape("circle")
        self.color("white")
        self.penup()
        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(self):
        self.y_move *= -1

main.py

from turtle import Screen
from paddle import Paddle
from ball import Ball
import time

screen = Screen()
screen.bgcolor("black")
screen.setup(800, 600)
screen.title("Pong")
screen.tracer(0)

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

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

game_is_on = True
while game_is_on:
    time.sleep(0.1)
    screen.update()
    ball.move()

    # Detect collision with wall
    if ball.ycor() > 280 or ball.ycor() < -280:
        # needs to bounce
        ball.bounce()

screen.exitonclick()

Detect collision with paddle
ball.py

from turtle import Turtle


class Ball(Turtle):

    def __init__(self):
        super().__init__()
        self.shape("circle")
        self.color("white")
        self.penup()
        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_y(self):
        self.y_move *= -1

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

main.py

from turtle import Screen
from paddle import Paddle
from ball import Ball
import time

screen = Screen()
screen.bgcolor("black")
screen.setup(800, 600)
screen.title("Pong")
screen.tracer(0)

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

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

game_is_on = True
while game_is_on:
    time.sleep(0.1)
    screen.update()
    ball.move()

    # Detect collision with wall
    if ball.ycor() > 280 or ball.ycor() < -280:
        ball.bounce_y()

    # Detect collision with paddle
    if ball.distance(r_paddle) < 50 and ball.xcor() > 320 or ball.distance(l_paddle) < 50 and ball.xcor() < -320:
        ball.bounce_x()


screen.exitonclick()

Detect when paddle misses
ball.py

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

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

    def reset_position(self):
        self.goto(0, 0)
        self.bounce_x()

main.py

game_is_on = True
while game_is_on:
    time.sleep(0.1)
    screen.update()
    ball.move()

    # Detect collision with wall
    if ball.ycor() > 280 or ball.ycor() < -280:
        ball.bounce_y()

    # Detect collision with paddle
    if ball.distance(r_paddle) < 50 and ball.xcor() > 320 or ball.distance(l_paddle) < 50 and ball.xcor() < -320:
        ball.bounce_x()

    # Detect R paddle misses
    if ball.xcor() > 380:
        ball.reset_position()

    # Detect L paddle misses
    if ball.xcor() < -380:
        ball.reset_position()

screen.exitonclick()

Final Pong Game

Keep score
scoreboard.py

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_scoreboard()

    def update_scoreboard(self):
        self.clear()
        self.goto(-100, 200)
        self.write(self.l_score, align="center", font=("Courier", 80, "normal"))
        self.goto(100, 200)
        self.write(self.r_score, align="center", font=("Courier", 80, "normal"))

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

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

ball.py

from turtle import Turtle


class Ball(Turtle):

    def __init__(self):
        super().__init__()
        self.shape("circle")
        self.color("white")
        self.penup()
        self.x_move = 10
        self.y_move = 10
        self.move_speed = 0.1

    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_y(self):
        self.y_move *= -1

    def bounce_x(self):
        self.x_move *= -1
        self.move_speed *= 0.9

    def reset_position(self):
        self.goto(0, 0)
        self.move_speed = 0.1
        self.bounce_x()

main.py

from turtle import Screen
from paddle import Paddle
from ball import Ball
from scoreboard import Scoreboard
import time

screen = Screen()
screen.bgcolor("black")
screen.setup(800, 600)
screen.title("Pong")
screen.tracer(0)

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

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

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

    # Detect collision with wall
    if ball.ycor() > 280 or ball.ycor() < -280:
        ball.bounce_y()

    # Detect collision with paddle
    if ball.distance(r_paddle) < 50 and ball.xcor() > 320 or ball.distance(l_paddle) < 50 and ball.xcor() < -320:
        ball.bounce_x()

    # Detect R paddle misses
    if ball.xcor() > 380:
        ball.reset_position()
        scoreboard.l_point()

    # Detect L paddle misses
    if ball.xcor() < -380:
        ball.reset_position()
        scoreboard.r_point()

screen.exitonclick()