TODO:

Till next project defence:

• move lists with enemy, asteroids and all other static lists to GameEngine - done
• instead of cleaning lists with present enemies, asteroids, bullets and etc. after they are dead or out of screen, set their vertical position at 0 to -300 - maybe not needed?
• add more types of enemy ships/bosses
• add collectable items - done

Other things to do:

• methods to all classes: (names may change due to better idea or functionality)
  • entity.Die()
  • entity.AddScore()
  • entity.Restart/Reposition()
• input handler class - done
• game level class

More to come :)