   2D Stars (particles) advice?
  I'm in the process of completing a 2D spaceship game which flies through a city type environment avoiding contact with buildings.  If I were to put stars in the background in the form of particles I am presuming that they would not move across the screen at the same speed as the buildings?  Would the star particles all move at different speeds?   
  The movement of a ship in the city is insignificant given the distance the stars are away (unless its a very small planet I suppose so the curvature of the planet had an effect), so unless you made the stars much closer than in realaity the player would never notice them moving. You might as well just have a static star background texture, or you could spawn stationary particles if you want it to look diffrent each time.   ;  In reality, I'm not sure if it would ever be possible to actually notice stars moving. Even at light speed, I don't think you could see much change over a short time scale. For any even vaguely realistic speed, you won't be seeing any movement in the stars.Now that doesn't mean that you shouldn't have some parallax in the stars. It's an easy, good-looking effect that can really add to the environment. For one of my games, I had three layers of stars moving at different rates in the background. Totally unrealistic, but added some spice to the scene. So if you're going for an arcade, fun, casual feel, have at least one layer of moving stars. If you're going for a realistic feel, then don't have the stars change unless you're moving incredibly fast.   ;  Thanks![Edited by - martini1 on May 25, 2009 7:02:52 AM];  So, static stars would be the realistic approach then.  Thanks!It's not a part of the assignment marking scheme.  Its just for added effect!   