An Asteroids clone, made with python and pyglet. Docs: https://pyglet.readthedocs.io/en/latest/index.html

Art from opengameart.org

• Draw player and a few asteroids
• Asteroids come in 3 sizes: big, medium, small.
• Asteroids move in random directions at constant speeds
• Player moves as follows:
  • W -> Moves the player in the direction the player is facing
  • A -> Rotate the player counter-clockwise
  • D -> Rotate the player clockwise
  • S -> Brake, that is, gradually reduces speed
  • Player is in space, so speed remains constant if no outside force
• The player and asteroids loop to the other side when going over the border of the screen
• Player can shoot bullets
  • Bullets move in a constant speed, in the direction the player was facing when fired
  • Apply a cooldown for shooting bullets. That is, at most one bullet every, say, 0.3 seconds.
  • Bullets that go outside the screen are destroyed.
• Collision checking with asteroids(See: AABB collision)
  • If player collides with an asteroid, remove one life. If last life, game over. Player starts with 3
  • If a bullet collides with an asteroid, destroy the bullet and the asteroid.
• Asteroids split when destroyed:
  • If it's a big asteroid, it splits into 3 medium ones.
  • If it's a medium asteroid, it splits into 3 small ones.
  • If it's a small asteroid, it doesn't split.
• Split asteroids gain a random increase in speed as well as a reasonable change in direction
• Asteroid spawning:
  • Spawn a group of asteroids as soon as there are no more left
  • Asteroids spawn around the edges of the screen
  • Asteroids never spawn on top of the player
• Sound(See Bfxr):
  • Shooting bullets plays a shooty sound
  • Asteroids being destroyed plays an appropriate sound
  • Moving with W activates the engine, playing an engine humming sound
• HUD
  • Draw current score.
  • Show a heart(or similar) for each life left.
• Scoring:
  • Destroying asteroids increases score.
  • Dying resets the score.

Additional polish:

• Game over screen:
  • Show score
  • Button to restart the game
• Pause screen: ESC to pause
  • Nothing moves, nothing is processed
  • Draw the word "PAUSED" while paused
  • ESC again to unpause
• Enemies(UFO?) spawn randomly
  • Enemies shoot at player
  • Destroying enemies increases score
  • Enemies move erratically