新背景：Cubes

parts/backgrounds/cubes.lua

@@ -0,0 +1,81 @@
+--Flying cubes
+local gc=love.graphics
+local rectangle=gc.rectangle
+local rnd=math.random
+local ins,rem=table.insert,table.remove
+local back={}
+
+local t
+local squares
+function back.init()
+	t=26
+	squares={}
+end
+function back.update(dt)
+	t=t-1
+	if t==0 then
+		local size=SCR.rad*(2+rnd()*3)/100
+		local S={
+			x=(SCR.w-size)*rnd(),
+			y=(SCR.h-size)*rnd(),
+			vx=0,vy=0,
+			size=size,
+			color=COLOR.random_dark(),
+		}
+		local speed=SCR.rad*(1+rnd()*2)/6
+		if rnd()<.5 then
+			S.vy=26*(.5-rnd())
+			S.vx=speed
+			if rnd()<.5 then
+				S.x=-S.size
+			else
+				S.x=SCR.w
+				S.vx=-S.vx
+			end
+		else
+			S.vx=26*(.5-rnd())
+			S.vy=speed
+			if rnd()<.5 then
+				S.y=-S.size
+			else
+				S.y=SCR.h
+				S.vy=-S.vy
+			end
+		end
+		ins(squares,S)
+		t=rnd(6,16)
+	end
+	for i=#squares,1,-1 do
+		local S=squares[i]
+		if
+			S.vx>0 and S.x>SCR.w or
+			S.vx<0 and S.x+S.size<0 or
+			S.vy>0 and S.y>SCR.h or
+			S.vy<0 and S.y+S.size<0
+		then
+			rem(S,i)
+		else
+			S.x=S.x+S.vx*dt
+			S.y=S.y+S.vy*dt
+		end
+	end
+end
+function back.draw()
+	gc.clear(.1,.1,.1)
+	gc.push("transform")
+	gc.origin()
+	gc.setLineWidth(6)
+	for i=1,#squares do
+		local S=squares[i]
+		local c=S.color
+		gc.setColor(c[1],c[2],c[3],.6)
+		rectangle("line",S.x,S.y,S.size,S.size)
+		gc.setColor(c)
+		rectangle("fill",S.x,S.y,S.size,S.size)
+	end
+	gc.pop()
+end
+function back.discard()
+	squares=nil
+end
+return back

parts/modes/marathon_hard.lua

@@ -23,7 +23,7 @@ return{
 		mindas=7,minarr=1,minsdarr=1,
 		drop=.5,wait=8,fall=20,
 		target=50,dropPiece=check,
-		bg="bg2",bgm="push",
+		bg="cubes",bgm="push",
 	},
 	pauseLimit=true,
 	slowMark=true,

parts/scenes/history.lua

@@ -7,7 +7,7 @@ local texts--Text list
 local scrollPos--Scroll down length
 
 function scene.sceneInit()
-	BG.set("rainbow")
+	BG.set("cubes")
 	texts=require"parts/updateLog"
 	scrollPos=1
 	if newVersionLaunch then