新背景：welcome（用于final和生存极限）

Zframework/bg.lua

@@ -203,6 +203,48 @@ back.fan={
 	end,
 }
 
+back.welcome={
+	init=function()
+		t=rnd()*2600
+		txt=gc.newText(_G.getFont(80),"Welcome To Techmino")
+	end,
+	resize=function()
+		W,H=SCR.w,SCR.h
+	end,
+	update=function(dt)
+		t=t+dt
+	end,
+	draw=function()
+		if -t%13.55<.1 then
+			gc.clear(.2+.1*sin(t),.2+.1*sin(1.26*t),.2+.1*sin(1.626*t))
+		else
+			gc.clear(.1,.1,.1)
+		end
+		gc.push("transform")
+		gc.replaceTransform(_G.xOy)
+		gc.translate(640,360)
+		if -t%18.26<1 then
+			gc.scale(6.26)
+			gc.translate(-t*400%800-400,0)
+		else
+			gc.scale(1.1626,1.26)
+		end
+		if -t%12.6<.1 then
+			gc.translate(60*sin(t*.26),100*sin(t*.626))
+		end
+		if -t%16.26<.1 then
+			gc.rotate(t+5*sin(.26*t)+5*sin(.626*t))
+		end
+		gc.setColor(.3,.6,.7)
+		gc.draw(txt,-883*.5+4*sin(t*.7942),-110*.5+4*sin(t*.7355))
+		gc.setColor(.6,.8,1)
+		gc.draw(txt,-883*.5+2*sin(t*.77023),-110*.5+2*sin(t*.7026))
+		gc.setColor(1,1,1)
+		gc.draw(txt,-883*.5+3*sin(t*.7283),-110*.5+3*sin(t*.7626))
+		gc.pop()
+	end,
+}
+
 back.aura={
 	init=function()
 		t=rnd()*2600

Zframework/widgetList.lua

@@ -90,7 +90,7 @@ local CUSlist={
 	opponent={0,1,2,3,4,5,6,7,8,9,10},
 	life={0,1,2,3,5,10,15,26,42,87,500},
 	pushSpeed={1,2,3,5,15},
-	bg={"none","grey","glow","rgb","flink","wing","fan","aura","bg1","bg2","rainbow","rainbow2","lightning","lightning2","matrix","space"},
+	bg={"none","grey","glow","rgb","flink","wing","fan","welcome","aura","bg1","bg2","rainbow","rainbow2","lightning","lightning2","matrix","space"},
 	bgm=BGM.list,
 }
 

modes/GM.lua

@@ -30,7 +30,7 @@ return{
 				return true
 			end
 		end,
-		bg="aura",bgm="far",
+		bg="welcome",bgm="far",
 	},
 	slowMark=true,
 	load=function()

modes/survivor_ultimate.lua

@@ -23,7 +23,7 @@ return{
 				P.modeData.event=P.modeData.event+1
 			end
 		end,
-		bg="rgb",bgm="storm",
+		bg="welcome",bgm="storm",
 	},
 	pauseLimit=true,
 	load=function()