import pygame

pygame.init()
screen = pygame.display.set_mode((640, 480))
clock = pygame.time.Clock()
running = True

player = pygame.sprite.Sprite()
player.image = pygame.image.load("raketa.png").convert_alpha()
player.rect = player.image.get_rect()
player.speed = pygame.Vector2((0, 0))
player.position = pygame.Vector2((30, 30))

wall = pygame.sprite.Sprite()
wall.image = pygame.Surface((10, 20))
wall.image.fill("red")
wall.rect = wall.image.get_rect().move((500, 100))

everything = pygame.sprite.Group([player, wall])

while running:
    dt = clock.tick(60) / 1000

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    keys = pygame.key.get_pressed()
    player.speed.x += 25.0 * dt * (keys[pygame.K_d] - keys[pygame.K_a])
    player.speed.y += 25.0 * dt * (keys[pygame.K_w] - keys[pygame.K_s])
    player.position += player.speed * dt
    player.rect.topleft = player.position  # tím se pozice zaokrouhlí na celé pixely

    screen.fill("white")
    everything.draw(screen)

    pygame.display.flip()