[stella] kernel approach, starfields

Subject: [stella] kernel approach, starfields
From: Glenn Saunders <mos6507@xxxxxxxxx>
Date: Fri, 19 Aug 2005 00:49:54 -0400
I have a question about starfields.

If you wanted a starfield where half the stars scroll
to the left in one big group and half of the stars
scroll to the right in one big group (almost like two
schools of fish crossing eachother) how would you go
about this?  This is not a 3D scroll, just a 2D left
and right scroll.

You'd probably use M0 and M1, right?

What is the best way to reposition missiles in the
kernel to generate a random starfield that is both CPU
efficient and RAM efficient?

My guess is that the scrolling itself could be
accomplished similar to how Combat animates, via
applying movement every frame without resetting
position, and that will take care of the wraparound,
so the only challenge is the repositioning in

Given this description I bet some of you have an idea
which game I'm thinking of here.

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