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bgcircles = {}
function scrollingcircles(y, speed, spacing, radius, color)
for i = 1, (128*(radius*4))/spacing, 1 do
circfill(-time()*speed+(spacing*(i-1)), y, radius, color)
end
end
function scrollingsprite(sprite,x,y,w,h,speed)
spr(sprite, (-t()*speed+x+w*8)%(128+w*8)-w*8, y, w, h)
end
function addbgcircle(x, y, velx, r, color, pos)
local circle = {}
circle.x = x
circle.y = y
circle.velx = velx
circle.r = r
circle.color = color
function circle.draw(circle)
circle.x += circle.velx
if circle.x < 0 - circle.r * 2 then
del(bgcircles, circle)
end
circfill(circle.x,circle.y,circle.r,circle.color)
end
add(bgcircles,circle, pos)
end
function drawbg()
cls(0)
camera((sin(shake+t())*shake)/3, (sin(shake+t()/2.1)*shake)/3)
--stars
for i = 1, 64, 1 do
pset(((-t()+i*2)*(i/32))%128, sin(i*0.536382)*64+64, 4)
end
--ringed planet
spr(201,130-t(),76,7,3)
spr(249,122-t(),100,7,1)
--clouds
scrollingcircles(-9, 24, 22, 22, 4)
scrollingcircles(-14, 40, 25, 20, 13)
--sprites
scrollingsprite(194, 20, 16, 2, 1, 34)
scrollingsprite(196, 40, 18, 2, 1, 34)
scrollingsprite(198, 20, 20, 2, 1, 34)
camera((sin(shake+t())*shake)/2, (sin(shake+t()/2.1)*shake)/2)
--landscape
scrollingcircles(125, 72, 25, 20, 8)
--scrolling sprites
--pine trees
scrollingsprite(231,20,77+16,2,2,72)
scrollingsprite(231,70,78+16,2,2,72)
scrollingsprite(231,80,78+16,2,2,72)
scrollingsprite(231,100,79+16,2,2,72)
scrollingsprite(231,120,80+16,2,2,72)
--small buildings
scrollingsprite(226,15,80+16,2,2,78)
scrollingsprite(226,65,80+16,2,2,78)
scrollingsprite(226,95,80+16,2,2,78)
scrollingsprite(226,115,80+16,2,2,78)
--totem poles
scrollingsprite(230,25,83+16,1,2,82)
scrollingsprite(230,65,84+16,1,2,82)
scrollingsprite(230,85,85+16,1,2,82)
--dead trees
scrollingsprite(228,30,85+16,2,2,84)
scrollingsprite(228,75,86+16,2,2,84)
scrollingsprite(228,100,87+16,2,2,84)
scrollingsprite(228,120,88+16,2,2,84)
--large buildings (front)
scrollingsprite(192,55,94,2,4,90)
scrollingsprite(192,20,91,2,4,90)
scrollingsprite(192,100,90,2,4,90)
scrollingsprite(192,130,92,2,4,90)
camera(sin(shake+t())*shake, sin(shake+t()/2.1)*shake)
scrollingcircles(154, 100, 30, 32, 2)
end
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