Pygame Space Invaders Beginner Tutorial in Python - PART 4 | Adding Aliens

In this Python tutorial I code Space Invaders using the PyGame module. I'm going to add aliens to the code and make them move by themselves.

[riley]

In case anyone is looking to control the movement speed.
Inside the Alien class make a variable called movement_speed = 5
Inside the update function change the first two lines from
self.rect.x += self.move_direction
self.move_counter += 1
to
self.rect.x += self.move_direction * self.movement_speed
self.move_counter += self.movement_speed

[briandomingo]

Hello Rus, I've been watching lots of your tutorials. Can I ask how to you code asteroids that spawn into the right and goes to left randomly?

[josev]

hello, how do i increase the speed of the allien movement

[MaureenScheltens]

i was wondering how can you load 2 alien img.
So when you make a first fleet using img 1 and a second fleet using img2 ?
thank you

[suongranet]

Hello how to transform scale alien plz

[dcdondon]

Hi. I am trying to tweak your code in order to make a vertical racing game.
Every let'say one second I would like a car to appear and coming down.
If I use your _def create_aliens()_ I've got only one car coming down; if I put the def inside the main loop I will have infinite overlapping cars.
Any idea to achieve this repetition?

[paiin]

hello, how do i lower the speed of the allien movement