47 lines
995 B
Lua
47 lines
995 B
Lua
-- Space with stars
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local gc=love.graphics
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local rectangle=gc.rectangle
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local rnd=math.random
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local back={}
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local stars
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local W,H
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function back.init()
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stars={}
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BG.resize(SCR.w,SCR.h)
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end
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function back.resize(w,h)
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W,H=w+20,h+20
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local S=stars
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for i=1,1260,5 do
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local s=rnd(26,40)*.1
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S[i]=s*SCR.k -- Size
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S[i+1]=rnd(W)-10 -- X
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S[i+2]=rnd(H)-10 -- Y
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S[i+3]=(rnd()-.5)*.01*s-- Vx
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S[i+4]=(rnd()-.5)*.01*s-- Vy
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end
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end
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function back.update(dt)
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local S=stars
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-- Star moving
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for i=1,1260,5 do
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S[i+1]=(S[i+1]+S[i+3]*dt*60)%W
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S[i+2]=(S[i+2]+S[i+4]*dt*60)%H
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end
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end
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function back.draw()
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gc.clear(.08,.08,.084)
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if not stars[1] then return end
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gc.translate(-10,-10)
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gc.setColor(1,1,1,.6)
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for i=1,1260,5 do
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rectangle('fill',stars[i+1],stars[i+2],stars[i],stars[i])
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end
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gc.translate(10,10)
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end
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function back.discard()
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stars=nil
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end
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return back
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