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-- bgcircles = {}
function scrollingcircles(y, speed, spacing, radius, color)
for i = 1, 256, spacing do
circfill((i-(gt*speed))%256-radius*2, y, radius, color)
end
end
function scrollingcirclelines(y, speed, spacing, radius, color)
for i = 1, 256, spacing do
circ((i-(gt*speed))%256-radius*2, y, radius, color)
end
end
function scrollingsprite(sprite,x,y,w,h,speed,flip)
flip = flip or false
spr(sprite, (-gt*speed+x+w*8)%(128+w*8)-w*8, y, w, h, flip)
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+gt/2.1)*shake)/3)
--stars
for i = 1, 64, 1 do
pset((((-gt*0.1)+i*4.3824)*(i/32))%128, sin(i*0.536382)*64+64, 4)
end
--galaxies
spr(254, 100, 40, 1, 1)
spr(239, 20, 30, 1, 1)
spr(254, 42, 72, 1, 1, true, true)
--ringed planet
palt(0,false)
spr(194,160-gt,50,4,2)
spr(199,200-gt,50,2,2)
spr(214,192-gt,58,1,1)
spr(201,160-gt,66,6,2)
spr(207,208-gt,66,1,1)
spr(234,152-gt,82,1,1)
spr(236,168-gt,82,3,1)
spr(250,152-gt,90,4,1)
spr(223,192-gt,82,1,1)
palt(0,true)
--clouds
scrollingcircles(-9, 24, 22, 22, 2)
--small clouds
scrollingsprite(198, 20, 10, 1, 1, 28)
scrollingsprite(235, 60, 10, 1, 1, 28)
scrollingsprite(198, 100, 10, 1, 1, 28)
scrollingsprite(235, 120, 10, 1, 1, 28)
scrollingsprite(235, 130, 12, 1, 1, 29)
scrollingsprite(198, 145, 15, 1, 1, 30)
scrollingsprite(235, 160, 15, 1, 1, 30)
scrollingsprite(198, 170, 15, 1, 1, 30)
--large clouds
scrollingsprite(248, 40, 5, 2, 1, 35)
scrollingsprite(248, 80, 5, 2, 1, 35)
scrollingsprite(232, 120, 7, 2, 1, 36)
scrollingsprite(232, 160, 7, 2, 1, 36)
scrollingsprite(248, 180, 9, 2, 1, 38)
scrollingsprite(232, 240, 9, 2, 1, 38)
scrollingsprite(248, 260, 9, 2, 1, 38)
--fg clouds
scrollingcirclelines(-11, 40, 25, 20, 2)
scrollingcircles(-12, 40, 25, 20, 4)
camera((sin(shake+t())*shake)/2, (sin(shake+gt/2.1)*shake)/2)
--landscape
scrollingcirclelines(125, 72, 25, 20, 8)
scrollingcircles(126, 72, 25, 20, 2)
--landscape lines
line(0, 112, 128, 112, 8)
line(0, 114, 128, 114, 8)
line(0, 116, 128, 116, 8)
line(0, 117, 128, 117, 8)
rectfill(0,119,128,128,8)
for i = 1, 32, 1 do
line(((-gt+i*2.5)*80)%128, 111, ((-gt+i*2.5)*80)%128*1.2-12.8, 125, 2)
end
--pine trees
scrollingsprite(231,10,78+16,1,2,72,true)
scrollingsprite(231,30,78+16,1,2,72)
scrollingsprite(231,20,77+16,1,2,72,true)
scrollingsprite(231,50,79+16,1,2,72,true)
scrollingsprite(231,62,77+16,1,2,72,true)
scrollingsprite(231,70,78+16,1,2,72)
scrollingsprite(231,80,79+16,1,2,72)
scrollingsprite(231,95,78+16,1,2,72)
scrollingsprite(231,100,77+16,1,2,72)
scrollingsprite(231,120,79+16,1,2,72,true)
--small buildings
scrollingsprite(226,15,82+16,2,2,80)
scrollingsprite(226,65,81+16,2,2,80)
scrollingsprite(226,95,80+16,2,2,80)
scrollingsprite(226,115,81+16,2,2,80)
--totem poles
scrollingsprite(230,25,83+16,1,2,84)
scrollingsprite(230,65,84+16,1,2,84,true)
scrollingsprite(230,85,85+16,1,2,84)
--dead trees
scrollingsprite(228,30,88+16,2,2,84)
scrollingsprite(228,75,89+16,2,2,84,true)
scrollingsprite(228,100,88+16,2,2,84)
scrollingsprite(228,120,89+16,2,2,84,true)
--large buildings (front)
scrollingsprite(192,52,94,2,4,90)
scrollingsprite(192,22,91,2,4,90)
scrollingsprite(192,102,90,2,4,90)
scrollingsprite(192,137,92,2,4,90)
camera(sin(shake+t())*shake, sin(shake+gt/2.1)*shake)
scrollingcirclelines(150, 100, 30, 32, 8)
scrollingcircles(151, 100, 30, 32, 2)
end
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