整理代码，返回需要二次确认的小程序统一用一个函数

parts/gameFuncs.lua

@@ -15,6 +15,18 @@ local playSFX=SFX.play
 
 
 --System
+do--function tryBackScene()
+    local sureQuitTime=-1e99
+    function tryBack()
+        if TIME()-sureQuitTime<1 then
+            sureQuitTime=-1e99
+            SCN.back()
+        else
+            sureQuitTime=TIME()
+            MES.new('warn',text.sureQuit)
+        end
+    end
+end
 do--function loadFile(name,args), function saveFile(data,name,args)
     local t=setmetatable({},{__index=function()return"'$1' loading failed: $2"end})
     function loadFile(name,args)

parts/scenes/app_2048.lua

@@ -331,7 +331,7 @@ function scene.keyDown(key,isRep)
     elseif key=='escape'then
         if repeater.focus then
             repeater.focus=false
-        else
+        elseif tryBack()then
             SCN.back()
         end
     end

parts/scenes/app_arithmetic.lua

@@ -185,7 +185,9 @@ function scene.keyDown(key,isRep)
     elseif key=='r'then
         reset()
     elseif key=='escape'then
-        SCN.back()
+        if tryBack()then
+            SCN.back()
+        end
     end
 end
 

parts/scenes/app_cannon.lua

@@ -28,7 +28,9 @@ function scene.keyDown(key,isRep)
             vy=pow*sin(ang)/2.6
         end
     elseif key=='escape'then
-        SCN.back()
+        if tryBack()then
+            SCN.back()
+        end
     end
 end
 function scene.mouseDown(_,_,k)

parts/scenes/app_dropper.lua

@@ -62,7 +62,9 @@ function scene.keyDown(key,isRep)
             state='move'
         end
     elseif key=='escape'then
-        SCN.back()
+        if tryBack()then
+            SCN.back()
+        end
     end
 end
 function scene.mouseDown(_,_,k)

parts/scenes/app_link.lua

@@ -262,11 +262,12 @@ function scene.keyDown(key,isRep)
     elseif key=='z'or key=='x'then
         love.mousepressed(ms.getPosition())
     elseif key=='escape'then
-        if state~=1 or sure>.2 then
-            SCN.back()
+        if state~=1 then
+            if tryBack()then
+                SCN.back()
+            end
         else
             sure=1
-            MES.new('info',"Press again")
         end
     elseif state==0 then
         if key=='q'then

parts/scenes/app_memorize.lua

@@ -41,7 +41,9 @@ end
 function scene.keyDown(key,isRep)
     if isRep then return end
     if key=='escape'then
-        SCN.back()
+        if tryBack()then
+            SCN.back()
+        end
     elseif key=='r'then
         _reset()
     elseif state==0 then

parts/scenes/app_polyforge.lua

@@ -45,7 +45,9 @@ end
 function scene.keyDown(key,isRep)
     if isRep then return end
     if key=='escape'then
-        SCN.back()
+        if tryBack()then
+            SCN.back()
+        end
     elseif key=='space'then
         if state==0 then--main
             if timer==0 then

parts/scenes/app_ten.lua

@@ -109,11 +109,11 @@ local function merge()
         end
         if chosen>=5 then
             SFX.play(
-                chosen>=9 and"ren_mega"or
-                chosen>=8 and"spin_3"or
-                chosen>=7 and"spin_2"or
-                chosen>=6 and"spin_1"or
-                "spin_0"
+                chosen>=9 and'ren_mega'or
+                chosen>=8 and'spin_3'or
+                chosen>=7 and'spin_2'or
+                chosen>=6 and'spin_1'or
+                'spin_0'
             )
         end
         fallingTimer=fast and 8 or 12
@@ -157,7 +157,9 @@ function scene.keyDown(key,isRep)
             fast=not fast
         end
     elseif key=='escape'then
-        SCN.back()
+        if tryBack()then
+            SCN.back()
+        end
     end
 end
 function scene.mouseMove(x,y)

parts/scenes/main.lua

@@ -116,12 +116,9 @@ function scene.keyDown(key,isRep)
     elseif key=='c'then
         enterConsole()
     elseif key=='escape'then
-        if TIME()-lastQuitTime<1 then
+        if tryBack()then
             VOC.play('bye')
             SCN.swapTo('quit','slowFade')
-        else
-            lastQuitTime=TIME()
-            MES.new('warn',text.sureQuit)
         end
     elseif key=='c'then
         enterConsole()

parts/scenes/net_game.lua

@@ -16,7 +16,6 @@ local inputBox=WIDGET.newInputBox{name='input',x=340,y=660,w=600,h=50,limit=256}
 local playing
 local lastUpstreamTime
 local upstreamProgress
-local lastBackTime=0
 local noTouch,noKey=false,false
 local touchMoveLastFrame=false
 local newMessageTimer
@@ -36,15 +35,12 @@ local function _gotoSetting()
     SCN.go('setting_game')
 end
 local function _quit()
-    if TIME()-lastBackTime<1 then
+    if tryBack()then
         NET.signal_quit()
         if SCN.stack[#SCN.stack-1]=='net_newRoom'then
             SCN.pop()
         end
         SCN.back()
-    else
-        lastBackTime=TIME()
-        MES.new('info',text.sureQuit)
     end
 end
 local function _switchChat()

parts/scenes/net_menu.lua

@@ -1,9 +1,6 @@
-local lastLogoutTime
-
 local scene={}
 
 function scene.sceneInit()
-    lastLogoutTime=-1e99
     BG.set()
 end
 function scene.sceneBack()
@@ -22,7 +19,7 @@ scene.widgetList={
     WIDGET.newButton{name='rooms', x=640, y=540,w=350,h=120,font=40,code=goScene'net_rooms'},
     WIDGET.newButton{name='logout',x=880, y=40,w=180, h=60,color='dR',
         code=function()
-            if TIME()-lastLogoutTime<1 then
+            if tryBack()then
                 if USER.uid then
                     NET.wsclose_play()
                     NET.wsclose_user()
@@ -31,9 +28,6 @@ scene.widgetList={
                     saveFile(USER,'conf/user')
                     SCN.back()
                 end
-            else
-                MES.new('info',text.sureQuit)
-                lastLogoutTime=TIME()
             end
         end},
     WIDGET.newButton{name='back',  x=1140,y=640,w=170,h=80,font=60,fText=CHAR.icon.back,code=backScene},