import sys
import pygame
from constants import SCREEN_WIDTH, SCREEN_HEIGHT
from player import Player
from asteroid import Asteroid
from asteroidfield import AsteroidField
from shot import Shot


def main():
    print("Starting asteroids!")
    print(f"Screen width: {SCREEN_WIDTH}")
    print(f"Screen height: {SCREEN_HEIGHT}")

    pygame.init()

    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

    clock = pygame.time.Clock()
    dt = 0

    updatable = pygame.sprite.Group()
    drawable = pygame.sprite.Group()
    asteroids = pygame.sprite.Group()
    shots = pygame.sprite.Group()

    Player.containers = (updatable, drawable)
    Asteroid.containers = (asteroids, updatable, drawable)
    AsteroidField.containers = updatable
    Shot.containers = (shots, updatable, drawable)

    playerObj = Player(SCREEN_WIDTH/2, SCREEN_HEIGHT/2)
    asteroidFieldObj = AsteroidField()

    # this is the game loop
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                return

        for obj in updatable:
            obj.update(dt)

        for asteroid in asteroids:
            if playerObj.is_colliding_with(asteroid):
                print("Game over!")
                sys.exit(0)

            for shot in shots:
                if shot.is_colliding_with(asteroid):
                    asteroid.split()
                    shot.kill()

        screen.fill("black")

        for obj in drawable:
            obj.draw(screen)

        pygame.display.flip()
        dt = clock.tick(60) / 1000


if __name__ == "__main__":
    main()