iOS设备震动函数改为输入1|2|3三档而不是时间（适配自改love，原版love都是固定振动）

框架不再使用不属于自己的SYSTEM的变量

Zframework/init.lua

@@ -408,7 +408,7 @@ function love.errorhandler(msg)
         --Write messages to log file
         love.filesystem.append('conf/error.log',
             os.date("%Y/%m/%d %A %H:%M:%S\n")..
-            #ERRDATA.." crash(es) "..SYSTEM.."-"..VERSION.string.."  scene: "..scn.."\n"..
+            #ERRDATA.." crash(es) "..love.system.getOS().."-"..VERSION.string.."  scene: "..scn.."\n"..
             table.concat(err,"\n",1,c-2).."\n\n"
         )
 
@@ -449,7 +449,7 @@ function love.errorhandler(msg)
             FONT.set(100)gc_print(":(",100,0,0,1.2)
             FONT.set(40)gc.printf(errorMsg,100,160,SCR.w0-100)
             FONT.set(20)
-            gc_print(SYSTEM.."-"..VERSION.string.."                          scene:"..(SCN and SCN.cur or"NULL"),100,660)
+            gc_print(love.system.getOS().."-"..VERSION.string.."                          scene:"..(SCN and SCN.cur or"NULL"),100,660)
             gc.printf(err[1],100,360,1260-100)
             gc_print("TRACEBACK",100,450)
             for i=4,#err-2 do

Zframework/require.lua

@@ -2,10 +2,10 @@ package.cpath=package.cpath..';'..SAVEDIR..'/lib/lib?.so;'..'?.dylib'
 local loaded={}
 return function(libName)
     local require=require
-    if SYSTEM=='OS X'then
+    if love.system.getOS()=='OS X'then
         require=package.loadlib(libName..'.dylib','luaopen_'..libName)
         libname=nil
-    elseif SYSTEM=='Android'then
+    elseif love.system.getOS()=='Android'then
         if not loaded[libName]then
             local platform=(function()
                 local p=io.popen('uname -m')

Zframework/vibrate.lua

@@ -1,6 +1,12 @@
 local level={0,0,.01,.016,.023,.03,.04,.05,.06,.07,.08,.09,.12,.15}
 local vib=love.system.vibrate
-return function(t)
-    t=level[t]
-    if t then vib(t)end
-end
+return love.system.getOS()=='iOS'and
+    function(t)
+        t=level[t]
+        if t then vib(t<=.03 and 1 or t<=.09 and 2 or 3)end
+    end
+or
+    function(t)
+        t=level[t]
+        if t then vib(t)end
+    end