整理代码，网战和普通游戏复用几个函数

parts/scenes/play.lua

@@ -2,7 +2,7 @@ local gc=love.graphics
 local gc_setColor=gc.setColor
 local tc=love.touch
 
-local max,sin=math.max,math.sin
+local sin=math.sin
 
 local SCR=SCR
 local VK=virtualkey
@@ -127,12 +127,10 @@ function scene.update(dt)
 	local _
 	local P1=PLAYERS[1]
 	local GAME=GAME
-	GAME.frame=GAME.frame+1
 
 	touchMoveLastFrame=false
-
-	--Update virtualkey animation
 	updateVirtualkey()
+	GAME.frame=GAME.frame+1
 
 	--Replay
 	if GAME.replaying then
@@ -153,25 +151,8 @@ function scene.update(dt)
 		GAME.replaying=_
 	end
 
-	--Counting,include pre-das,directy RETURN,or restart counting
-	if GAME.frame<=180 then
-		if GAME.frame==180 then
-			gameStart()
-		elseif GAME.frame==60 or GAME.frame==120 then
-			SFX.play("ready")
-		end
-		for p=1,#PLAYERS do
-			local P=PLAYERS[p]
-			if P.movDir~=0 then
-				if P.moving<P.gameEnv.das then
-					P.moving=P.moving+1
-				end
-			else
-				P.moving=0
-			end
-		end
-		return
-	end
+	--Counting, include pre-das
+	if checkStart()then return end
 
 	--Update players
 	for p=1,#PLAYERS do
@@ -184,35 +165,7 @@ function scene.update(dt)
 	end
 
 	--Warning check
-	if P1.alive then
-		if GAME.frame%26==0 and SETTING.warn then
-			local F=P1.field
-			local height=0--Max height of row 4~7
-			for x=4,7 do
-				for y=#F,1,-1 do
-					if F[y][x]>0 then
-						if y>height then
-							height=y
-						end
-						break
-					end
-				end
-			end
-			GAME.warnLVL0=math.log(height-15+P1.atkBuffer.sum*.8)
-		end
-		_=GAME.warnLVL
-		if _<GAME.warnLVL0 then
-			_=_*.95+GAME.warnLVL0*.05
-		elseif _>0 then
-			_=max(_-.026,0)
-		end
-		GAME.warnLVL=_
-	elseif GAME.warnLVL>0 then
-		GAME.warnLVL=max(GAME.warnLVL-.026,0)
-	end
-	if GAME.warnLVL>1.126 and GAME.frame%30==0 then
-		SFX.fplay("warning",SETTING.sfx_warn)
-	end
+	checkWarning()
 end
 
 local function drawAtkPointer(x,y)