Implement Levels

[johnthagen]

I'd like to start thinking about how to add some kind of progressive story (#15) in the game. I think the easiest way to begin this would be to have the concept of "levels" like the original Asteroids game. This would also give us the option to have asteroids spawn in the middle of the screen instead of having to enter from the outside.

@mcdenhoed Thoughts?

[mcdenhoed]

I think levels are a good idea. Time based or number of asteroids based? I'm not sure about spawning on-screen. I'm guessing the original did that? Sticking to offscreen spawn points could allow for a nice demarcation of levels. Something like:

• Blank screen with just the player. Level title.
• Title fades out.
• Second or two delay, then they start floating in.
• Player finishes the level. No more asteroids floating in.
• Fade in next level title

I feel like asteroids appearing onscreen might break up that "smooth" vibe? I don't know, haha

[johnthagen]

Sounds good. Yeah and keeping the drift-in asteroids lets this be a smaller incremental change.

[mcdenhoed]

We should also decrease the radius of the circle the asteroids spawn at. it's larger than it needs to be and is causing that long delay before the first appears