48 lines
837 B
Lua
48 lines
837 B
Lua
--Space with stars
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local gc=love.graphics
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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()
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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])%W
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S[i+2]=(S[i+2]+S[i+4])%H
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end
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end
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function back.draw()
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gc.clear(.2,.2,.2)
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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(.8,.8,.8)
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for i=1,1260,5 do
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local s=stars
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local x,y=s[i+1],s[i+2]
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s=s[i]
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gc.rectangle("fill",x,y,s,s)
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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 |