main.py

from turtle import Screen, speed
import pygame

class color:
    black = (0,0,0)
    white =(255,255,255)
    red = (255,0,0)
    blue = (0 , 0 , 255)
    yellow = (255,255,0)


class Rocket:
    def __init__(self ,x,y ,color):
        self.w = 10
        self.h =50
        self.x = x
        self.y = y
        self.color = color
        self.speed = 10
        self.score = 0
        self.area = pygame.draw.rect(Game.screen,self.color,[self.x,self.y,self.w,self.h])


    def show(self):
        self.area = pygame.draw.rect(Game.screen,self.color,[self.x,self.y,self.w,self.h])

    def move(self,b):
        if self.y < b.y:
            self.y += self.speed
        elif self.y > b.y:
            self.y -= self.speed

        #limitation
        if self.y < 0:
            self.y = 0
        if self.y > Game.height - self.h:
            self.y = Game.height -self.h

class Ball:
    def __init__(self):


        self.r = 10
        self.x = Game.width /2
        self.y = Game.height /2
        self.speed = 1

        self.color = color.yellow
        self.x_direction = -1
        self.y_direction = -1
        self.area = pygame.draw.circle(Game.screen,self.color,[self.x,self.y],self.r)


    def show(self):
        self.area = pygame.draw.circle(Game.screen,self.color,[self.x,self.y],self.r)
    
    def move(self):
        self.x += self.speed * self.x_direction
        self.y += self.speed * self.y_direction

        if self.y > Game.height or self.y <0 :
            self.y_direction *= -1

    def  new(self):
        self.x = Game.width / 2
        self.y = Game.height / 2        

class Game:
    width = 700
    height = 400
    screen = pygame.display.set_mode((width,height))
    pygame.display.set_caption("ping pong")
    clock = pygame.time.Clock()
    fps = 30

    @staticmethod
    def play():
        me = Rocket(20,Game.height/2,color.red)
        computer = Rocket(Game.width-30,Game.height/2,color.blue)
        ball = Ball()

        if ball.x < 0:
            computer.score += 1
        elif ball.x > Game.width:
            me.score +=1



        while True:
            
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    exit

                if event.type == pygame.MOUSEMOTION:
                    me.y = pygame.mouse.get_pos()[1]

                    if me.y > Game.height - me.h:
                        me.y = Game.height - me.h

            
            ball.move()
            computer.move(ball)
            #backend
            if ball.x < 0 :
                computer.score +=1
                ball.new()
            elif ball.x > Game.width:
                me.score += 1
                ball.new()

            if me.area.colliderect(ball.area) or computer.area.colliderect(ball.area):
                ball.x_direction *= -1

            #frontend   
            Game.screen.fill(color.black)
            pygame.draw.rect(Game.screen,color.white,[0,0,Game.width,Game.height],10)
            pygame.draw.aaline(Game.screen,color.white,[Game.width/2,0],[Game.width/2,Game.height])
            me.show()
            computer.show()
            ball.show()
            pygame.display.update()

           
            Game.clock.tick(Game.fps) 

if __name__ == "__main__" :

       Game.play()