Holy sweet Jesus, that was my original idea. Like no joke. I was planning on scripting the weapons and stuff, and calling it Ender's Game: Revival. I guess great minds think alike, eh?
no need to script unless you want to get the perfect image. just get the zone mod (has zero-gravity zones that act like water bricks and can overlap non-water bricks) and a gun that moves you in the direction you look (or a playertype). the proton cannon is a really old laser gun from ladios' weapon pack that doesn't do any damage but has huge kickback, so you might use that.
the benefit of using zone allows you to place bricks anywhere inside it, so you can easily create the stars. you can probably use an old corpse mod to make dead players leave solid corpses that you can hide behind.
