spaceship

import pygame as pg


class Ennemy(pg.sprite.Sprite):
    def __init__(self, x, y, e):
        self.e = e
        pg.sprite.Sprite.__init__(self, g.bullets)
        self.rect = pg.Rect((x, y, 4, 30))



class Bullet(pg.sprite.Sprite):
    def __init__(self, x, y, d, e, g):
        self.e = e
        pg.sprite.Sprite.__init__(self, g.bullets)
        self.rect = pg.Rect((x, y, 4, 30))

    def update(self):
        self.rect.y -= 3
        for ennemie in self.e:
            if self.rect.colliderect(ennemie.rect):
                pass




class Spaceship(pg.sprite.Sprite):
    def __init__(self, x, y, g):
        self.ticks = 0
        self.g = g
        pg.sprite.Sprite.__init__(self, g.spaceships)
        self.rect = pg.Rect((x, y, 30, 30))

    def events(self):
        key = pg.key.get_pressed()
        if key[pg.K_LEFT]:
            self.rect.x -= 4
        if key[pg.K_RIGHT]:
            self.rect.x += 4

    def shoot(self):
        Bullet(self.rect.x + 13, self.rect.y, 3, self.g.ennemies, self.g)

    def update(self):
        self.ticks += 1
        if self.ticks % 15 == 0:
            self.shoot()
            self.ticks = 0



class Game:
    def __init__(self):
        pg.init()
        self.screen = pg.display.set_mode((400, 600))
        self.spaceships = pg.sprite.Group()
        self.bullets = pg.sprite.Group()
        self.ennemies = pg.sprite.Group()
        Spaceship(200, 500, self)
        print(self.spaceships)

    def draw(self):
        self.screen.fill((255, 255, 255))
        for spaceship in self.spaceships:
            pg.draw.rect(self.screen, (0, 0, 0), (spaceship.rect.x, spaceship.rect.y, 30, 30))
        for bullet in self.bullets:
            pg.draw.rect(self.screen, (0, 0, 0), (bullet.rect.x, bullet.rect.y, 4, 20))
        pg.display.update()

    def events(self):
        for event in pg.event.get():
            if event.type == pg.QUIT:
                quit()
        for spaceship in self.spaceships:
            spaceship.events()

    def update(self):
        for spaceship in self.spaceships:
            spaceship.update()
        for bullet in self.bullets:
            bullet.update()

    def loop(self):
        clock = pg.time.Clock()
        while True:
            clock.tick(60)
            self.events()
            self.update()
            self.draw()

Game().loop()