背景系统增加“默认背景”功能，新增节日飘雪背景

parts/scenes/help.lua

@@ -5,7 +5,7 @@ local sin=math.sin
 local scene={}
 
 function scene.sceneInit()
-	BG.set("space")
+	BG.set()
 end
 
 function scene.draw()

parts/scenes/intro.lua

@@ -9,7 +9,7 @@ local scene={}
 local t1,t2,r
 
 function scene.sceneInit()
-	BG.set("space")
+	BG.set()
 	BGM.play("blank")
 	t1,t2=0,0--Timer
 	r={}--Random animation type

parts/scenes/main.lua

@@ -45,7 +45,10 @@ local tip
 
 function scene.sceneInit()
 	tip=text.getTip()
-	BG.set("space")
+	BG.set(
+		FESTIVAL=="Xmas"and"snow"or
+		"space"
+	)
 
 	GAME.modeEnv=NONE
 	--Create demo player

parts/scenes/minigame.lua

@@ -1,7 +1,7 @@
 local scene={}
 
 function scene.sceneInit()
-	BG.set("space")
+	BG.set()
 end
 
 scene.widgetList={

parts/scenes/mode.lua

@@ -20,7 +20,7 @@ local touchDist
 local scene={}
 
 function scene.sceneInit(org)
-	BG.set("space")
+	BG.set()
 	destroyPlayers()
 	local cam=mapCam
 	cam.zoomK=org=="main"and 5 or 1

parts/scenes/setting_game.lua

@@ -4,7 +4,7 @@ local int=math.floor
 local scene={}
 
 function scene.sceneInit()
-	BG.set("space")
+	BG.set()
 end
 function scene.sceneBack()
 	FILE.save(SETTING,"conf/settings")

parts/scenes/setting_sound.lua

@@ -13,7 +13,7 @@ function scene.sceneInit()
 	last=0
 	jump=0
 	cv=SETTING.cv
-	BG.set("space")
+	BG.set()
 end
 function scene.sceneBack()
 	FILE.save(SETTING,"conf/settings")

parts/scenes/setting_video.lua

@@ -1,7 +1,7 @@
 local scene={}
 
 function scene.sceneInit()
-	BG.set("space")
+	BG.set()
 end
 function scene.sceneBack()
 	FILE.save(SETTING,"conf/settings")
@@ -51,7 +51,7 @@ scene.widgetList={
 		code=function()
 			BG.set("none")
 			SETTING.bg=not SETTING.bg
-			BG.set("space")
+			BG.set()
 		end},
 	WIDGET.newSwitch{name="power",		x=990,	y=640,font=35,disp=WIDGET.lnk_SETval("powerInfo"),
 		code=function()

parts/scenes/staff.lua

@@ -8,7 +8,7 @@ local time,v
 function scene.sceneInit()
 	time=0
 	v=1
-	BG.set("space")
+	BG.set()
 end
 
 function scene.mouseDown(x,y)