Starfields 2 - scrolling into the screen

Starfields2.lua

-- StarfFields by Bri_G based on HTML by Seb Lee-Delisle
-- Scrolling field movement into screen

--[[ if require ~= nil then
    require("loveCodea")	
end --]]

function setup()
	--
	fov = 250
	wide = WIDTH
	high = HEIGHT
	midX = wide/2
	midY = high/2
	stars = 1000
	pts = { x3D = {}, y3D = {}, z3D = {} }
	for i= 1, stars do
		pts.x3D[i] = math.random()*wide-midX
		pts.y3D[i] = math.random()*high-midY
		pts.z3D[i] = math.random()*500-250 
	end
end

function draw()
	--
	background(0,0,0,255)
	smooth()
	fill(255,255,255,255)
	for i = 1, stars do
		pts.z3D[i] = pts.z3D[i] - 4
		if pts.z3D[i] < -fov then pts.z3D[i] = pts.z3D[i] + 500 end
		ThreeDto2D(i)
	end
	attribution()
end

function touched(touch)

end

function ThreeDto2D(i)
	--
	scale = fov/(fov+pts.z3D[i])
	x2D = pts.x3D[i] * scale + midX
	y2D = pts.y3D[i] * scale + midY
	strokeWidth(scale)
	stroke(255,255,255,255)
	fill(100,150,150+100*scale)
	ellipse(x2D, y2D, scale, scale)
	stroke()
end

function attribution()
	pushStyle()
		font("Georgia")
		fontSize(16)
		fill(100,250,100,255)
		text("from js code by Seb Lee-Delisle", 200,35)
		sprite("MWCWhite250", wide - 150,50)
	popStyle()
end

Hi All,

Second in the series of Starfields from the code provided by Seb Lee-Delisle. This one has the old favourite scrolling into the screen to give the impression of spaceflight. Check out the other files in my Gists.
Enjoy,
Bri_G